Automatic magnetic ring feeding mechanism

Abstract

The invention is suitable for the field of magnetic ring machining, and provides an automatic magnetic ring feeding mechanism which comprises a machining box, two grinding assemblies are arranged in the machining box, a bottom plate is arranged at the bottom of the machining box, and four powder bins arranged in a linear array are arranged in the middle of the bottom plate; a positioning column is rotationally arranged in the middle of the bottom plate, an opening plate is arranged at the upper end of the positioning column, and a blocking plate is arranged at the lower end of the positioning column. When the magnetic powder grinding device is used, ferrite powder to be treated is put into the feeding box, magnetic powder reaches the material notch in the lower end of the grinding box from the material notch in the upper end of the grinding box to be ground, and when the notch of the opening plate rotates to enable the upper end opening of the powder bin to be opened, a cavity of the powder bin is filled with the magnetic powder under vibration of the vibration motor; when the opening plate continues to rotate to block the upper end opening of the powder bin, the notch of the blocking plate is just aligned with the lower end opening of the powder bin so that the powder can fall down, and the efficient metering function is achieved.

Description

Technical Field

[0001] The invention belongs to the field of magnetic ring processing, and in particular relates to an automatic feeding mechanism for a magnetic ring. Background Art

[0002] With the development of industrial technology, modern magnetic ring processing technology has become more and more perfect. In the process of magnetic ring reproduction and processing, ferrite magnetic powder needs to be compacted into a ring shape, and then the compacted ferrite ring body is sent to the combustion furnace for sintering and other processes. Before the ferrite magnetic powder is sent into the compaction mold, it needs to be measured. The previous ferrite magnetic powder measurement method is weight-bearing. Compared with the weight measurement method, the mass of powder required for a magnetic ring is relatively small, so the error will be relatively large. The operation of the weight-bearing method is more complicated, and moving the powder material after the weight-bearing is easy to cause material loss, which will cause the mass of the magnetic ring to become smaller or even the density is insufficient; In the past, compaction dies could only compact one type of magnetic ring. If magnetic rings of different types and sizes needed to be compacted, other equipment would need to be replaced, and manpower would be wasted on debugging the equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a magnetic ring automatic feeding mechanism to address the deficiencies in the prior art. When the device is in use, the ferrite powder to be processed is put into the feeding box. At the same time, the stepping motor drives the driven turntable to rotate through the driving turntable and the belt, and the positioning column and the driven turntable rotate synchronously. The bevel gear combination at the top of the positioning column drives the cross bar and the grinding inner tank at both ends to rotate. The magnetic powder will be crushed when it reaches the material gap at the lower end of the grinding box from the material gap at the upper end of the grinding box. When the gap of the opening plate rotates to open the upper port of the powder cabin, the magnetic powder fills the chamber of the powder cabin under the vibration of the vibration motor. When the opening plate continues to rotate to block the upper port of the powder cabin, the gap of the sealing plate is just aligned with the lower port of the powder cabin to let the powder fall down, thereby achieving the effect of efficient metering, thereby solving the problems mentioned in the background technology.

[0004] To solve the above problems, the present invention provides the following technical solutions: an automatic feeding mechanism for a magnetic ring, comprising a processing box, wherein two grinding assemblies are arranged inside the processing box, a bottom plate is arranged at the bottom of the processing box, and four powder cabins in a straight line array are arranged in the middle of the bottom plate; a positioning column is rotatably arranged in the middle of the bottom plate, an opening plate is arranged at the upper end of the positioning column, and a blocking plate is arranged at the lower end of the positioning column, and the surfaces of the blocking plate and the opening plate are tightly attached to the upper and lower side walls of the bottom plate, and the side walls of the blocking plate and the opening plate are both provided with notches with an arc of 90 degrees, and the two notches with an arc of 90 degrees are offset from each other by 180 degrees, and the edges of the blocking plate and the opening plate are both provided with slope chamfers, and the slope surfaces of the blocking plate and the opening plate form an angle of 30 degrees with the surface of the bottom plate, and the positioning column is connected to a driving assembly; a pressing table is arranged below the processing box, and a tamping molding assembly is arranged on the pressing table, a feeding mechanism is arranged between the processing box and the pressing table, and a vibration motor is arranged on the inner side wall of the processing box.

[0005] Furthermore, the grinding assembly includes a feed box, which is fixed on the inner wall of the processing box. A grinding box is arranged in the middle of the feed box. A cylindrical grinding chamber is rotatably arranged in the middle of the grinding box. A grinding liner is rotatably arranged inside the cylindrical grinding chamber. Material notches are arranged at the upper and lower ends of the grinding box, and the grinding liner is connected to the linkage assembly.

[0006] Furthermore, the linkage assembly includes a driving bevel gear at the top of the positioning column, a cylindrical hole is provided in the middle of the grinding inner tank, a cross bar is inserted in the middle of the cylindrical hole, a driven bevel gear is fixed in the middle of the cross bar, the driving bevel gear and the driven bevel gear are meshed with each other, and the ratio of the number of teeth of the driving bevel gear and the driven bevel gear is one to two.

[0007] Furthermore, a circular sleeve is detachably installed in the inner wall of the powder cabin, the thickness of the circular sleeve is 2 millimeters, and the upper and lower end surfaces of the circular sleeve are respectively kept flush with the ends of the bottom plate.

[0008] Furthermore, the driving assembly includes a driven turntable at the bottom end of the positioning column, a stepper motor is fixedly arranged on the side wall of the processing box, a driving turntable is arranged at the output end of the stepper motor, and the driven turntable and the driving turntable are connected by a belt.

[0009] Furthermore, the feeding mechanism comprises a funnel below the processing box, the funnel is fixed to the bottom of the processing box through an assembly frame, the openings of the funnel are respectively aligned with the powder compartments, and a feeding pipe is provided at the bottom end of the funnel.

[0010] Furthermore, the tamping and forming assembly includes a fixed pressing table, with four mold chambers arranged in the middle of the pressing table, two cantilever bridges arranged on the outer side wall of the pressing table, a hydraulic press arranged on the side wall of the cantilever bridge, a pressing mold column arranged on the output rod of the upper hydraulic press, a demolding base arranged on the output rod of the lower hydraulic press, the axes of the pressing mold column and the demolding base coincide with the axes of the four mold chambers in the vertical direction, the top port of each mold chamber is provided with a feed shoe, the feed shoe is respectively connected to the lower port of the discharge pipe, and an inner liner ring is detachably provided on the inner side wall of the mold chamber.

[0011] Furthermore, two threaded holes are arranged on the side walls of the blocking plate and the opening plate, and the blocking plate and the opening plate are fixedly connected by bolts and the side walls of the positioning columns respectively.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects: Firstly, when the device is in use, the ferrite powder to be processed is put into the feed box, and at the same time, the stepper motor drives the driven turntable to rotate through the driving turntable and the belt, the positioning column and the driven turntable rotate synchronously, and the bevel gear combination at the top of the positioning column drives the cross bar and the grinding liner at both ends to rotate, and the magnetic powder reaches the material gap at the lower end of the grinding box from the material gap at the upper end of the grinding box and will be crushed. When the gap of the opening plate rotates to open the upper port of the powder cabin, the magnetic powder fills the chamber of the powder cabin under the vibration of the vibration motor, and when the opening plate continues to rotate to block the upper port of the powder cabin, the gap of the sealing plate is just aligned with the lower port of the powder cabin to let the powder fall, thereby achieving the effect of efficient metering.

[0013] Secondly, the powder is pushed into the mold chamber along the discharge pipe and the feed shoe, and two hydraulic presses compact and eject the products respectively. The circular ring sleeve inside the powder chamber, the inner liner ring inside the mold chamber, the pressing mold column and the demolding base can be replaced as a set. To process magnetic rings of different diameters, the circular ring sleeve, inner liner ring, pressing mold column and demolding base are replaced with corresponding models, thus achieving the effect of convenient equipment debugging without the need to replace other equipment for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the present invention.

[0015] Figure 2 It is a schematic diagram of a side view of the present invention.

[0016] Figure 3 It is a schematic diagram of the present invention when viewed from above.

[0017] Figure 4 It is a schematic diagram of a cross-section of the present invention.

[0018] Figure 5It is a schematic diagram of the feeding box of the present invention.

[0019] Figure 6 Schematic diagram of the grinding box of the present invention.

[0020] Figure 7 Schematic diagram of the sealing plate of the present invention.

[0021] Figure 8 It is a schematic diagram of the feeding pipe of the present invention.

[0022] Fig. 9 It is a schematic diagram of the pressing table of the present invention.

[0023] Description of reference numerals: Processing box 1, bottom plate 101, powder cabin 102, feeding pipe 2, funnel 201, assembly frame 202, pressing table 3, cantilever bridge 301, hydraulic press 302, feed tile 303, pressing mold column 304, demoulding base 305, feed box 4, grinding box 401, material notch 402, positioning column 5, driven turntable 501, stepping motor 502, driving turntable 503, belt 504, grinding liner 6, sealing plate 7, opening plate 8, driving bevel gear 9, driven bevel gear 901, cross bar 902. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention provides a magnetic ring automatic feeding mechanism, such as Figure 1-9As shown, it includes a processing box 1, wherein two grinding assemblies are arranged inside the processing box 1, a bottom plate 101 is arranged at the bottom of the processing box 1, and four powder cabins 102 in a straight line array are arranged in the middle of the bottom plate 101; a positioning column 5 is rotatably arranged in the middle of the bottom plate 101, an opening plate 8 is arranged at the upper end of the positioning column 5, and a blocking plate 7 is arranged at the lower end of the positioning column 5, and the surfaces of the blocking plate 7 and the opening plate 8 are closely attached to the upper and lower side walls of the bottom plate 101, and the side walls of the blocking plate 7 and the opening plate 8 are both provided with 90-degree The gap of the arc is 180 degrees, and the two gaps of the arc of 90 degrees are offset from each other by 180 degrees. The edges of the blocking plate 7 and the opening plate 8 are provided with slope chamfers. The slope surfaces of the blocking plate 7 and the opening plate 8 form an angle of 30 degrees with the surface of the bottom plate 101. The positioning column 5 is connected to the driving assembly. A pressing table 3 is provided below the processing box 1, and a tamping molding assembly is provided on the pressing table 3. A feeding mechanism is provided between the processing box 1 and the pressing table 3, and a vibration motor is provided on the inner wall of the processing box 1.

[0027] In this embodiment, when the notch of the opening plate 8 rotates to open the upper port of the powder cabin 102, the magnetic powder fills the chamber of the powder cabin 102 under the vibration of the vibration motor. When the opening plate 8 continues to rotate to block the upper port of the powder cabin 102, the notch of the blocking plate 8 is aligned with the lower port of the powder cabin 102 to allow the powder to fall, thereby achieving an efficient metering effect. Compared with the weight metering method of the prior art, the mass of powder required for a magnetic ring is relatively small, and such an error will also be relatively large. The volume metering method of the present invention is more accurate.

[0028] In a further embodiment of the present invention, Figure 1-6 As shown, the grinding assembly includes a feed box 4, which is fixed on the inner wall of the processing box 1, a grinding box 401 is arranged in the middle of the feed box 4, a cylindrical grinding chamber is rotatably arranged in the middle of the grinding box 401, a grinding liner 6 is rotatably arranged inside the cylindrical grinding chamber, the upper and lower ends of the grinding box 401 are provided with material notches 402, and the grinding liner 6 is connected to the linkage assembly.

[0029] In this embodiment, the ferrite powder to be processed is put into the feed box 4, and the magnetic powder is crushed when it reaches the material gap 402 at the lower end of the grinding box 401 from the material gap 402 at the upper end of the grinding box 401, thereby achieving the function of crushing large particles in the powder.

[0030] In a further embodiment of the present invention, Figure 1-7As shown, the linkage assembly includes a driving bevel gear 9 at the top of the positioning column 5, a cylindrical hole is provided in the middle of the grinding liner 6, a cross bar 902 is inserted in the middle of the cylindrical hole, a driven bevel gear 901 is fixedly provided in the middle of the cross bar 902, the driving bevel gear 9 and the driven bevel gear 901 are meshed with each other, and the ratio of the number of teeth of the driving bevel gear 9 and the driven bevel gear 901 is one to two.

[0031] In this embodiment, the bevel gear combination at the top of the positioning column 5 drives the crossbar 902 and the grinding liner 6 at both ends to rotate, thereby achieving a linkage effect.

[0032] In a further embodiment of the present invention, Figure 1-4 As shown, a circular ring sleeve is detachably installed in the inner wall of the powder cabin 102, the thickness of the circular ring sleeve is two millimeters, and the upper and lower end surfaces of the circular ring sleeve are kept flush with the ends of the bottom plate 101 respectively.

[0033] In this embodiment, the volume of the powder cabin 102 can be changed by installing annular sleeves of different thicknesses inside the powder cabin 102, and the staff can install the annular sleeves according to the amount of powder required for one magnetic ring.

[0034] In a further embodiment of the present invention, Figure 1-8 As shown, the driving assembly includes a driven turntable 501 at the bottom end of the positioning column 5, a stepper motor 502 is fixedly arranged on the side wall of the processing box 1, a driving turntable 503 is arranged at the output end of the stepper motor 502, and the driven turntable 501 and the driving turntable 503 are connected by a belt 504.

[0035] In this embodiment, the stepper motor 502 drives the driven turntable 501 to rotate by driving the turntable 503 and the belt 504, and the positioning column 5 and the driven turntable 501 rotate synchronously.

[0036] In a further embodiment of the present invention, Figure 1-8 As shown, the feeding mechanism includes a funnel 201 below the processing box 1, the funnel 201 is fixed to the bottom of the processing box 1 through an assembly frame 202, the openings of the funnel 201 are respectively aligned with the powder cabin 102, and a feeding pipe 2 is provided at the bottom end of the funnel 201.

[0037] In this embodiment, the powder in the powder cabin 102 will enter into each funnel 201, and the material in the funnel 201 will be delivered down along the discharge pipe 2 and enter into the compaction molding assembly for the next step of processing.

[0038] In a further embodiment of the present invention, Figure 1-9As shown, the compaction molding assembly includes a fixed pressing table 3, four mold chambers are arranged in the middle of the pressing table 3, two cantilever bridges 301 are arranged on the outer wall of the pressing table 3, a hydraulic press 302 is arranged on the side wall of the cantilever bridge 301, a pressing mold column 304 is arranged on the output rod of the upper hydraulic press 302, and a demolding base 305 is arranged on the output rod of the lower hydraulic press 302, the axis of the pressing mold column 304 and the demolding base 305 coincide with the axis of the four mold chambers in the vertical direction, the top port of each mold chamber is provided with a feed shoe 303, the feed shoe 303 is respectively connected to the lower port of the discharge pipe 2, and an inner liner ring is detachably arranged on the inner wall of the mold chamber.

[0039] In this embodiment, the powder is pushed into the mold chamber along the discharge pipe 2 and the feed shoe 303, and the two hydraulic presses 302 respectively compact and eject the product. The annular sleeve inside the powder chamber 102, the inner liner ring inside the mold chamber, the pressing mold column 304 and the demolding base 305 can be replaced as a set. To process magnetic rings of different diameters, the annular sleeve, the inner liner ring, the pressing mold column 304 and the demolding base 305 are replaced with corresponding models, thereby achieving the effect of convenient equipment debugging without the need to replace other equipment for processing.

[0040] In a further embodiment of the present invention, Figure 1-7 As shown, two threaded holes are arranged on the side walls of the blocking plate 7 and the opening plate 8, and the blocking plate 7 and the opening plate 8 are fixedly connected by bolts and the side walls of the positioning column 5 respectively.

[0041] In this embodiment, when the planes of the blocking plate 7 and the opening plate 8 are excessively worn, the blocking plate 7 and the opening plate 8 can be disassembled and replaced with new parts.

[0042] Working principle: when the notch of the opening plate 8 rotates to open the upper port of the powder cabin 102, the magnetic powder fills the chamber of the powder cabin 102 under the vibration of the vibration motor, and when the opening plate 8 continues to rotate to block the upper port of the powder cabin 102, the notch of the blocking plate 8 is just aligned with the lower port of the powder cabin 102 to let the powder fall down, thereby achieving the effect of efficient metering. Compared with the weight metering method of the prior art, the mass of powder required for a magnetic ring is relatively small, and such an error will also be relatively large. The volume metering method of the present invention is relatively accurate. The ferrite powder to be processed is put into the feed box 4, and the magnetic powder reaches the material notch 402 at the lower end of the grinding box 401 from the material notch 402 at the upper end of the grinding box 401 and will be crushed, thereby achieving the function of crushing large particles in the powder. The bevel gear combination at the top of the positioning column 5 drives the cross bar 902 and the grinding liner 6 at both ends to rotate, thereby achieving the effect of linkage. By adding annular sleeves of different thicknesses inside the powder cabin 102, the volume of the powder cabin 102 can be changed, and the staff can The required amount of powder is used to install the annular sleeve, the stepper motor 502 drives the driven turntable 501 to rotate by driving the turntable 503 and the belt 504, the positioning column 5 and the driven turntable 501 rotate synchronously, the powder in the powder cabin 102 will enter each funnel 201, the material in the funnel 201 is delivered along the discharge pipe 2 and enters the compaction molding component for the next step of processing, the powder is pushed into the mold chamber along the discharge pipe 2 and the feed shoe 303, and the two hydraulic presses 302 are compacted and pushed respectively. To produce the product, the annular sleeve inside the powder chamber 102, the liner sleeve ring inside the mold chamber, the pressing mold column 304 and the demoulding base 305 can be replaced as a set. To process magnetic rings of different diameters, the annular sleeve, the liner sleeve ring, the pressing mold column 304 and the demoulding base 305 can be replaced with corresponding models, thereby achieving the effect of convenient equipment debugging without replacing other equipment for processing. When the planes of the sealing plate 7 and the opening plate 8 are excessively worn, the sealing plate 7 and the opening plate 8 can be removed and replaced with new parts.

[0043] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0044] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0045] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A magnetic ring automatic feeding mechanism, characterized in that: It comprises a processing box (1), wherein two grinding assemblies are arranged inside the processing box (1), a bottom plate (101) is arranged at the bottom of the processing box (1), and four powder material compartments (102) arranged in a straight line array are arranged in the middle of the bottom plate (101); A positioning column (5) is rotatably arranged in the middle of the bottom plate (101), an opening plate (8) is arranged at the upper end of the positioning column (5), and a blocking plate (7) is arranged at the lower end of the positioning column (5), the surfaces of the blocking plate (7) and the opening plate (8) are in close contact with the upper and lower side walls of the bottom plate (101), the side walls of the blocking plate (7) and the opening plate (8) are both provided with notches with an arc of 90 degrees, and the two notches with an arc of 90 degrees are offset from each other by 180 degrees, the edges of the blocking plate (7) and the opening plate (8) are both provided with slope chamfers, and the slope surfaces of the blocking plate (7) and the opening plate (8) and the surface of the bottom plate (101) form an angle of 30 degrees, and the positioning column (5) is connected to the drive assembly; A pressing table (3) is arranged below the processing box (1), a compaction forming assembly is arranged on the pressing table (3), a feeding mechanism is arranged between the processing box (1) and the pressing table (3), and a vibration motor is arranged on the inner side wall of the processing box (1).

2. The magnetic ring automatic feeding mechanism according to claim 1, characterized in that: The grinding assembly comprises a feed box (4), the feed box (4) being fixed on the inner side wall of the processing box (1), a grinding box (401) being arranged in the middle of the feed box (4), a cylindrical grinding chamber being rotatably arranged in the middle of the grinding box (401), a grinding liner (6) being rotatably arranged inside the cylindrical grinding chamber, material notches (402) being arranged at the upper and lower ends of the grinding box (401), and the grinding liner (6) being connected to the linkage assembly.

3. The magnetic ring automatic feeding mechanism according to claim 2 is characterized in that: The linkage assembly comprises a driving bevel gear (9) at the top end of the positioning column (5); a cylindrical hole is arranged in the middle of the grinding liner (6); a cross bar (902) is inserted in the middle of the cylindrical hole; a driven bevel gear (901) is fixedly arranged in the middle of the cross bar (902); the driving bevel gear (9) and the driven bevel gear (901) are meshed with each other; and the ratio of the number of teeth of the driving bevel gear (9) and the driven bevel gear (901) is one to two.

4. The magnetic ring automatic feeding mechanism according to claim 1 is characterized in that: A circular sleeve is detachably mounted on the inner wall of the powder cabin (102). The thickness of the circular sleeve is two millimeters, and the upper and lower end surfaces of the circular sleeve are respectively kept flush with the ends of the bottom plate (101).

5. The magnetic ring automatic feeding mechanism according to claim 1 is characterized in that: The driving assembly comprises a driven turntable (501) at the bottom end of the positioning column (5), a stepper motor (502) is fixedly arranged on the side wall of the processing box (1), a driving turntable (503) is arranged at the output end of the stepper motor (502), and the driven turntable (501) and the driving turntable (503) are connected via a belt (504).

6. The magnetic ring automatic feeding mechanism according to claim 1, characterized in that: The feeding mechanism comprises a funnel (201) below the processing box (1); the funnel (201) is fixed to the bottom of the processing box (1) via an assembly frame (202); the openings of the funnel (201) are respectively aligned with the powder compartment (102); and a feeding pipe (2) is provided at the bottom end of the funnel (201).

7. The magnetic ring automatic feeding mechanism according to claim 1, characterized in that: The compaction molding assembly comprises a fixedly arranged pressing table (3), wherein four mold chambers are arranged in the middle of the pressing table (3), two cantilever bridges (301) are arranged on the outer side wall of the pressing table (3), a hydraulic press (302) is arranged on the side wall of the cantilever bridge (301), a pressing mold column (304) is arranged on the output rod of the upper hydraulic press (302), and a demoulding base (305) is arranged on the output rod of the lower hydraulic press (302), the axis of the pressing mold column (304) and the demoulding base (305) coincide with the axis of the four mold chambers in the vertical direction, the top end port of each mold chamber is provided with a feed shoe (303), and the feed shoe (303) is respectively connected to the lower end port of the discharge pipe (2), and an inner liner ring is detachably arranged on the inner side wall of the mold chamber.

8. The magnetic ring automatic feeding mechanism according to claim 1, characterized in that: Two threaded holes are provided on the side walls of the blocking plate (7) and the opening plate (8), and the blocking plate (7) and the opening plate (8) are fixedly connected via bolts and the side walls of the positioning columns (5), respectively.

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