Casting Polishing Device

Abstract

The present invention provides a casting polishing device, which relates to the technical field of polishing equipment. The purpose is to solve the technical problem that it is difficult for the existing technology to achieve a sufficient polishing effect on castings with narrow channels or corners. The adopted technical solution is: a casting polishing device, including: a polishing barrel for accommodating the casting and ferromagnetic abrasive, and a driving mechanism for driving the ferromagnetic abrasive; the axis of the polishing barrel points horizontally; two driving mechanisms are provided and distributed at both ends of the polishing barrel; the driving mechanism includes: a turntable, a plurality of DC electromagnets installed on the turntable, a storage battery for supplying power to the DC electromagnets, and a first power source for driving the turntable to rotate; the axis of the turntable coincides with the axis of the polishing barrel, and the connection line between the N pole and the S pole of the DC electromagnet is perpendicular to the axis of the polishing barrel. The present invention can achieve a sufficient polishing effect on the casting, improve the mechanization degree of casting polishing; and can realize batch polishing of the casting, improving the polishing efficiency of the casting.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and particularly to a casting polishing device. Background Art

[0002] After a casting is formed by casting, it needs to be polished. In the prior art, generally, an operator holds a polishing tool and polishes the casting by means of grinding. This polishing method is difficult to achieve a sufficient polishing effect for castings with narrow channels or corners; and it completely relies on manual operation, with a low degree of mechanization. Therefore, it is necessary to study a casting polishing device to improve the mechanization degree of casting polishing and achieve a sufficient polishing effect on the casting. Summary of the Invention

[0003] The purpose of the present invention is to provide a casting polishing device, which can achieve a sufficient polishing effect on the casting, improve the mechanization degree of casting polishing; and can realize batch polishing of the casting, improving the polishing efficiency of the casting.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A casting polishing device, comprising: a polishing barrel for accommodating a casting and ferromagnetic abrasive, and a driving mechanism for driving the ferromagnetic abrasive to move in the polishing barrel; wherein, the axis of the polishing barrel points in the horizontal direction, the polishing barrel is provided with a pick-up and placement opening at the top and is adapted with a cover; two driving mechanisms are provided and are distributed at both ends of the polishing barrel; the driving mechanism includes: a turntable, a plurality of DC electromagnets installed on the turntable, a storage battery for supplying power to the DC electromagnets, and a first power source for driving the turntable to rotate; the axis of the turntable coincides with the axis of the polishing barrel, and the connection line between the N pole and the S pole of the DC electromagnet is perpendicular to the axis of the polishing barrel.

[0006] Optionally, the polishing barrel includes: a material barrel with openings at both ends, and a converging and diverging chamber installed at the end of the material barrel and completely covering the opening; the converging and diverging chamber is provided with an opening on the side facing the material barrel, and a sieve plate for allowing air flow to pass through is installed at the opening; the converging and diverging chamber is provided with a reflux interface, and the reflux interfaces of the two converging and diverging chambers are respectively connected to both ends of the plug chamber; a piston is provided in the plug chamber to separate the reflux interfaces connected at both ends; the piston is adapted to a second power source for driving it to reciprocate in the plug chamber.

[0007] Optionally, the piston includes: a plug body and a plug rod coaxially connected to the plug body; the plug rod passes through the plug chamber and is hinged to one end of a connecting rod; the other end of the connecting rod is hinged to a crankshaft; the second power source is a servo motor, and drives the piston to reciprocate in the plug chamber by driving the crankshaft to rotate.

[0008] Optionally, the diameter of the sieve plate is smaller than the inner diameter of the barrel, and the sieve plate is located outside the converging and diverging chamber; on the side of the converging and diverging chamber facing the barrel, a concentric first annular groove and a second annular groove are provided, and the second annular groove is located outside the first annular groove; the end of the barrel is installed in the first annular groove of the corresponding converging and diverging chamber; the pick-and-place opening is provided at the top of the barrel wall; the cover is arc-shaped, and its end is limited in the second annular groove of the corresponding converging and diverging chamber; the cover and the converging and diverging chamber form a sliding connection; a positioning portion with a first positioning hole is provided at the outer end of the cover, and a second positioning hole is correspondingly provided in the converging and diverging chamber, and a positioning pin is adapted.

[0009] Optionally, an elastic seal is provided on the outer side of the barrel wall around the pick-and-place opening to form a seal when the cover covers the pick-and-place opening.

[0010] Optionally, the converging and diverging chamber is provided with a slag discharge pipe extending downward, and the lower end of the slag discharge pipe is detachably connected to the slag collection chamber; an air return branch pipe is provided above the slag collection chamber of the slag discharge pipe, and the return connection interface is provided at one end of the air return branch pipe away from the slag discharge pipe; a filtering mechanism is provided in the slag discharge pipe; the filtering mechanism includes: a cylindrical filter cloth and a skeleton that presses both ends of the filter cloth against the inner wall of the pipe; the filter cloth intercepts at the connection between the slag discharge pipe and the air return branch pipe.

[0011] Optionally, a sealing member is provided in the slag collection chamber; the sealing member includes: a sealing cone that is smaller at the top and larger at the bottom, and a guiding cylinder connected to the bottom of the sealing cone; a guiding column that cooperates with the guiding cylinder is provided at the bottom of the slag collection chamber; a compression spring is provided at the top of the guiding column to apply an upward thrust to the sealing member; the maximum diameter of the sealing cone is larger than the inner diameter of the slag discharge pipe to close the lower end of the slag discharge pipe under the drive of the compression spring.

[0012] Optionally, it further includes: support platforms provided at both ends of the polishing barrel; a ring frame is provided at the top of the support platform, and the converging and diverging chamber is installed in the ring frame; the turntable is rotationally connected to the ring frame through a slewing bearing; the first power source is installed at the top of the support platform.

[0013] Optionally, the first power source is an alternating current coil; when the alternating current coil and the direct current electromagnet are energized, the alternating current coil applies a force to the direct current electromagnet through the changing magnetic field generated by it, driving the turntable to rotate.

[0014] Optionally, a wire pipe extending upward is installed at the top of the storage battery, and a power connection chamber is provided at the top of the wire pipe; a brush and a slip ring are provided in the power connection chamber; the slip ring is electrically connected to the storage battery, and the brush is electrically connected to the direct current electromagnet.

[0015] The working principle of the present invention is as follows: ferromagnetic abrasive and the casting to be polished are put into the polishing barrel from the loading and unloading port; the cover is used to seal the loading and unloading port. The storage battery supplies power to the DC electromagnet, and the first power source drives the turntable to rotate. The DC electromagnet drives the ferromagnetic abrasive in the polishing barrel to rotate, so as to polish the casting.

[0016] It can be seen from this that the beneficial effects of the present invention are as follows: the degree of mechanization of casting polishing is improved. And the ferromagnetic abrasive can penetrate into the narrow channels or corners of the casting, so as to achieve a sufficient polishing effect on the casting. At the same time, the casting can be polished in batches, improving the polishing efficiency of the casting. In addition, for castings made of ferromagnetic materials, in order to prevent the castings from being attracted by the DC electromagnet and rotating together, the magnetic force of the DC electromagnet cannot be set too strong; in this case, the coverage range of the DC electromagnet that can attract the ferromagnetic abrasive will be limited accordingly; by respectively arranging driving mechanisms with DC electromagnets at both ends of the polishing barrel, ferromagnetic abrasives within a larger spatial range can be attracted to rotate together; thus, it is applicable to polishing castings of larger sizes and can improve the batch processing capacity for small castings. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the driving mechanisms arranged at both ends of the polishing barrel;

[0020] Figure 3 It is a schematic diagram of the collection and distribution chambers arranged at both ends of the material barrel;

[0021] Figure 4 It is an assembly schematic diagram of the polishing barrel;

[0022] Figure 5 It is an assembly schematic diagram of the turntable and the DC electromagnet;

[0023] Figure 6 It is an assembly schematic diagram of the collection and distribution chamber and the plug chamber;

[0024] Figure 7 It is a schematic diagram of the second power source arranged in the plug chamber;

[0025] Figure 8 It is a connection schematic diagram of the piston and the crankshaft;

[0026] Figure 9 Schematic diagram of the first annular groove and the second annular groove provided for the converging and distributing chamber;

[0027] Figure 10 Assembly schematic diagram of the converging and distributing chamber, filter cloth and framework;

[0028] Figure 11 Assembly schematic diagram of the converging and distributing chamber, slag collecting chamber and sealing member;

[0029] Figure 12 Schematic diagram of the guide post provided in the slag collecting chamber;

[0030] Figure 13 Structural schematic diagram of the sealing member;

[0031] Figure 14 Schematic diagram of the ring frame provided for the support table;

[0032] Figure 15 Schematic diagram of the power connection chamber provided for the storage battery.

[0033] Reference numerals: 1, polishing barrel; 2, picking and placing opening; 3, cover; 4, turntable; 5, DC electromagnet; 6, storage battery; 7, first power source; 8, material cylinder; 9, converging and distributing chamber; 10, opening; 11, sieve plate; 12, reflux interface; 13, plug chamber; 14, piston; 15, second power source; 16, plug body; 17, plug rod; 18, connecting rod; 19, crankshaft; 20, first annular groove; 21, second annular groove; 22, first positioning hole; 23, positioning part; 24, positioning pin; 25, slag discharge pipe; 26, slag collecting chamber; 27, return air branch pipe; 28, filter cloth; 29, framework; 30, sealing member; 31, sealing cone; 32, guide cylinder; 33, guide post; 34, compression spring; 35, support table; 36, ring frame; 37, slewing bearing; 38, wire pipe; 39, power connection chamber. Detailed implementation manners

[0034] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless specifically defined otherwise.

[0037] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Embodiment 1

[0040] As Figures 1 to 5 shown, the embodiment of the present invention provides a casting polishing device. The casting polishing device includes: a polishing barrel 1 for accommodating the casting and ferromagnetic abrasive, and a driving mechanism for driving the ferromagnetic abrasive to move in the polishing barrel 1. It should be understood that the ferromagnetic abrasive is usually selected as steel needles or steel sand. Among them, the axis of the polishing barrel 1 points in the horizontal direction, and the polishing barrel 1 is provided with a pick-up and placement opening 2 at the top and is adapted with a cover 3. Two driving mechanisms are provided and are distributed at both ends of the polishing barrel 1. The driving mechanism includes: a turntable 4, a plurality of DC electromagnets 5 mounted on the turntable 4, a storage battery 6 for supplying power to the DC electromagnets 5, and a first power source 7 for driving the turntable 4 to rotate. It should be understood that a plurality of DC electromagnets 5 can be mounted on the turntable 4. The axis of the turntable 4 coincides with the axis of the polishing barrel 1, and the connection line between the N pole and the S pole of the DC electromagnet 5 is perpendicular to the axis of the polishing barrel 1.

[0041] The specific implementation manner of this embodiment is described below: Put ferromagnetic abrasive and the casting to be polished into the polishing barrel 1 from the loading and unloading port 2; let the cover 3 close the loading and unloading port 2. Let the storage battery 6 supply power to the DC electromagnet 5, and let the first power source 7 drive the turntable 4 to rotate. The DC electromagnet 5 will drive the ferromagnetic abrasive in the polishing barrel 1 to rotate, so as to polish the casting. This casting polishing device improves the mechanization degree of casting polishing. And the ferromagnetic abrasive can penetrate into the narrow channels or corners of the casting, so as to achieve a sufficient polishing effect on the casting. At the same time, the casting can be polished in batches, improving the polishing efficiency of the casting. In addition, for the casting made of ferromagnetic material, in order to prevent the casting from being attracted by the DC electromagnet 5 and rotating together, the magnetic force of the DC electromagnet 5 cannot be set too strong; in this case, the coverage range where the DC electromagnet 5 can attract the ferromagnetic abrasive will be limited accordingly. By respectively arranging driving mechanisms with DC electromagnets 5 at both ends of the polishing barrel 1 in the present invention, ferromagnetic abrasive within a larger space range can be attracted to rotate together; thus, it is applicable to polishing castings with larger sizes and can improve the batch processing capacity for small castings.

[0042] Embodiment 2

[0043] As Figure 1 、 Figure 6 、 Figure 7 、 Figure 8 As shown, on the basis of Embodiment 1, the polishing barrel 1 includes: a barrel 8 with openings at both ends, and a converging and diverging chamber 9 installed at the end of the barrel 8 and completely covering the openings; the converging and diverging chamber 9 is provided with an opening 10 on the side facing the barrel 8, and a sieve plate 11 for air flow to pass through is installed at the opening 10; the converging and diverging chamber 9 is provided with a reflux interface 12, and the reflux interfaces 12 of the two converging and diverging chambers 9 are respectively connected to both ends of the plug chamber 13; a piston 14 is provided in the plug chamber 13 to separate the reflux interfaces 12 connected at both ends; the piston 14 is adapted to be driven by a second power source 15 to reciprocate in the plug chamber 13.

[0044] It should be understood that if there is no liquid immersion in the polishing barrel 1 and the second power source 15 drives the piston 14 to move back and forth along the plug chamber 13, a high-speed air flow that flows back and forth left and right and surges can be formed in the polishing barrel 1, thereby driving the ferromagnetic abrasive in the polishing barrel 1 to move back and forth left and right; if the polishing barrel 1 is immersed in liquid and the second power source 15 drives the piston 14 to move back and forth along the plug chamber 13, a high-speed liquid flow that flows back and forth left and right and surges can be formed in the polishing barrel 1, thereby driving the ferromagnetic abrasive in the polishing barrel 1 to move back and forth left and right. The current of the DC electromagnet 5 can be controlled by setting a PLC controller; for example, the magnetic force at both ends of the polishing barrel 1 can be made larger on the left and smaller on the right, or smaller on the left and larger on the right, showing a periodic change, and cooperating with the fluid that flows back and forth left and right and surges in the polishing barrel 1; thereby enabling the ferromagnetic abrasive to move violently in a three-dimensional trajectory in the polishing barrel 1; this can greatly increase the movement range of the ferromagnetic abrasive and can polish the casting more fully. When only the DC electromagnet 5 is set, the ferromagnetic abrasive mainly rotates around the axis of the turntable 4, which is basically equivalent to a two-dimensional trajectory, and the movement range is quite limited, and only small-sized castings can be polished, and only a small number of castings can be processed each time. However, by adopting the structure proposed in this embodiment, the movement range of the ferromagnetic abrasive in the axial direction of the polishing barrel 1 can be greatly increased, and the effective polishing area of the ferromagnetic abrasive in the polishing barrel 1 can be significantly improved; this allows the polishing barrel 1 to be set longer in the axial direction, thereby allowing the polishing barrel 1 to have a larger volume, and further being applicable to polishing larger-sized castings and improving the batch processing ability of small-sized castings. In addition, the diameter of the opening 10 is smaller than the diameter of the sieve plate 11; the particle size of the ferromagnetic abrasive is smaller than the aperture of the sieve holes of the sieve plate 11.

[0045] Embodiment 3

[0046] As Figures 6 to 8 shown, on the basis of Embodiment 2, the piston 14 includes: a plug body 16 and a plug rod 17 coaxially connected to the plug body 16; the plug rod 17 passes through the plug chamber 13 and is hinged to one end of a connecting rod 18; the other end of the connecting rod 18 is hinged to a crankshaft 19; the second power source 15 is a servo motor and drives the piston 14 to reciprocate along the plug chamber 13 by driving the crankshaft 19 to rotate.

[0047] It should be understood that by driving the crankshaft 19 to rotate by the servo motor to drive the piston 14 to reciprocate along the plug chamber 13; the maximum frequency of the reciprocating movement of the piston 14 can be increased; thereby enabling the ferromagnetic abrasive to move more violently in the polishing barrel 1 to improve the polishing effect. In addition, a PLC controller can also be set to control the current of the DC electromagnet 5 and the rotation speed of the servo motor, thereby controlling the movement of the ferromagnetic abrasive in the polishing barrel 1.

[0048] Embodiment 4

[0049] As Figure 3 、Figure 4 , Figure 9 As shown in Figure 9 , on the basis of Embodiment 2 or Embodiment 3, the diameter of the sieve plate 11 is smaller than the inner diameter of the barrel 8, and the sieve plate 11 is located outside the converging chamber 9; on the side of the converging chamber 9 facing the barrel 8, concentric first annular groove 20 and second annular groove 21 are provided, and the second annular groove 21 is located outside the first annular groove 20; the end of the barrel 8 is installed in the first annular groove 20 of the corresponding converging chamber 9; the pick-up and placement opening 2 is provided at the top of the barrel wall of the barrel 8; the cover 3 is arc-shaped, and its end is limited in the second annular groove 21 of the corresponding converging chamber 9; the cover 3 and the converging chamber 9 form a sliding connection; a positioning portion 23 with a first positioning hole 22 is provided at the outer end of the cover 3, and a second positioning hole is correspondingly provided in the converging chamber 9, and a positioning pin 24 is adapted.

[0050] It should be understood that the polishing barrel 1 adopts the split combination structure of the barrel 8, the converging chamber 9, and the cover 3, which will be more convenient for pre-production and post-maintenance. Both ends of the barrel 8 can be fixed in the first annular groove 20 of the converging chamber 9 by means of bonding, welding, etc. The cover 3 can slide along the second annular groove 21 of the converging chamber 9 to change the opening and closing state of the pick-up and placement opening 2. Align the first positioning hole 22 with the second positioning hole and insert the positioning pin 24, then the cover 3 can keep the pick-up and placement opening 2 closed. Pull out the positioning pin 24 and rotate the cover 3 along the second annular groove 21 to open the pick-up and placement opening 2. In addition, the sieve plate 11 can be detachably installed on the side of the converging chamber 9 facing the barrel 8 by means of bolt connection, clamping, etc., and the sieve plate 11 can be disassembled and assembled at the pick-up and placement opening 2, so as to conveniently replace the sieve plate 11.

[0051] Embodiment 5

[0052] On the basis of Embodiment 4, an elastic seal is provided on the outer side of the barrel wall of the barrel 8 around the pick-up and placement opening 2 to form a seal when the cover 3 covers the pick-up and placement opening 2.

[0053] It should be understood that the elastic seal is usually made of rubber or elastic plastic.

[0054] Embodiment 6

[0055] As Figure 4 , Figure 10 , Figure 11As shown, based on any one of Embodiments 2 to 5, the converging and diverging chamber 9 is provided with a slag discharge pipe 25 extending downward, and the lower end of the slag discharge pipe 25 is detachably connected to the slag collection chamber 26; the slag discharge pipe 25 is provided with a return air branch pipe 27 above the slag collection chamber 26, and the return flow interface 12 is arranged at one end of the return air branch pipe 27 away from the slag discharge pipe 25; a filtering mechanism is arranged in the slag discharge pipe 25; the filtering mechanism includes: a cylindrical filter cloth 28, and a framework 29 that presses both ends of the filter cloth 28 against the inner wall of the pipeline; the filter cloth 28 intercepts at the connection between the slag discharge pipe 25 and the return air branch pipe 27.

[0056] It should be understood that when the piston 14 moves back and forth along the plug chamber 13, forming a high-speed air flow or high-speed liquid flow that surges back and forth left and right in the polishing barrel 1; in addition to greatly increasing the movement range of the ferromagnetic abrasive in the polishing barrel 1; it can also make the debris generated during the polishing process gradually pass through the sieve plate 11 of the converging and diverging chamber 9 and enter the converging and diverging chamber 9. The debris without ferromagnetism will fall downward from the converging and diverging chamber 9 and finally fall into the slag collection chamber 26 at the lower end of the slag discharge pipe 25; the debris with ferromagnetism will be attracted by the DC electromagnet 5 and stick to the inner wall of the converging and diverging chamber 9 away from the polishing barrel 1, and after the polishing is completed and the DC electromagnet 5 is powered off, it will fall into the slag collection chamber 26 at the lower end of the slag discharge pipe 25. The filter cloth 28 can play a blocking role to prevent debris from entering the plug chamber 13. The framework 29 includes: pressing rings at the upper and lower ends, and strip parts or rod parts connecting the pressing rings; in this way, when the piston 14 moves back and forth along the plug chamber 13, the middle section of the cylindrical filter cloth 28 can oscillate back and forth, so that the debris attached to the filter cloth 28 falls off; in this way, it can effectively prevent the filter cloth 28 from being blocked and there is no need to clean the filter cloth 28 frequently. The slag discharge pipe 25 and the slag collection chamber 26 can be connected by bolts; or an internal thread can be provided on one of the slag discharge pipe 25 and the slag collection chamber 26, and a mating external thread can be provided on the other to form a threaded connection.

[0057] Embodiment 7

[0058] As Figures 11 to 13 As shown, based on Embodiment 6, a sealing member 30 is arranged in the slag collection chamber 26; the sealing member 30 includes: a sealing cone 31 that is smaller at the top and larger at the bottom, and a guiding cylinder 32 connected to the bottom of the sealing cone 31; a guiding column 33 that cooperates with the guiding cylinder 32 is arranged at the bottom of the slag collection chamber 26; a compression spring 34 is arranged at the top of the guiding column 33 to apply an upward thrust to the sealing member 30; the maximum diameter of the sealing cone 31 is larger than the inner diameter of the slag discharge pipe 25 to close the lower end of the slag discharge pipe 25 under the drive of the compression spring 34.

[0059] It should be understood that, driven by the piston 14, when the air flow or liquid flow enters the slag discharge pipe 25 from the return air branch pipe 27, it will drive the sealing member 30 to move downward, opening the lower end of the slag discharge pipe 25; at the same time, it will also agitate the filter cloth 28, causing the debris attached to the filter cloth 28 to fall off; in this way, the debris can smoothly fall into the slag collection chamber 26. When the air flow or liquid flow enters the return air branch pipe 27 from the slag discharge pipe 25, the sealing member 30 will reset upward, closing the lower end of the slag discharge pipe 25; in this way, the debris in the slag collection chamber 26 can be prevented from being sucked out. The diameter of the guide post 33 is equal to or slightly smaller than the inner diameter of the guide cylinder 32 and is inserted into the lower part of the guide cylinder 32; the compression spring 34 is located inside the guide cylinder 32. By disassembling the slag collection chamber 26, the debris accumulated in the slag collection chamber 26 can be cleaned, or the liquid in the polishing barrel 1 can be discharged. In addition, a valve can also be provided at the bottom of the slag collection chamber 26 to discharge the debris in the slag collection chamber 26 or the liquid in the polishing barrel 1.

[0060] Example 8

[0061] As Figure 2 , Figure 14 , Figure 15 shown, on the basis of any one of Examples 2 to 7, the casting polishing device further includes: support platforms 35 provided at both ends of the polishing barrel 1; a ring frame 36 is provided at the top of the support platform 35, and the converging and diverging chamber 9 is installed inside the ring frame 36; the turntable 4 is rotationally connected to the ring frame 36 through a slewing bearing 37; the first power source 7 is installed at the top of the support platform 35.

[0062] It should be understood that the outer ring of the slewing bearing 37 can be installed on the side of the ring frame 36 away from the converging and diverging chamber 9, and the turntable 4 can be installed on the inner ring of the slewing bearing 37.

[0063] Example 9

[0064] On the basis of any one of Examples 1 to 8, the first power source 7 is an AC coil; when the AC coil and the DC electromagnet 5 are energized, the AC coil applies a force to the DC electromagnet 5 through the changing magnetic field generated by it, driving the turntable 4 to rotate.

[0065] It should be understood that the axis core of the AC coil points in the horizontal direction. When both the AC coil and the DC electromagnet 5 are energized; the function of the AC coil is equivalent to the stator of a motor; the turntable 4 installed with the DC electromagnet 5 is equivalent to the rotor of a motor; in this way, the turntable 4 can be driven to rotate only by setting the AC coil. Compared with setting a motor to drive the turntable 4 to rotate, the number of components can be reduced and the cost can be lowered. In addition, by setting a PLC controller, the current of the AC coil can be controlled, thereby controlling the rotation speed of the turntable 4 and further controlling the movement of the ferromagnetic abrasive in the polishing barrel 1.

[0066] Example 10

[0067] As Figure 15 shown, on the basis of any one of Embodiments 1 to 9, a wire tube 38 extending upward is installed at the top of the storage battery 6, and a power connection chamber 39 is provided at the top of the wire tube 38; a brush and a slip ring are provided in the power connection chamber 39; the slip ring is electrically connected to the storage battery 6, and the brush is electrically connected to the DC electromagnet 5.

[0068] It should be understood that a rigid tube can be installed at the axis center of the turntable 4, and the wire for supplying power to the DC electromagnet 5 can be fixed in the rigid tube, and then the wire is electrically connected to the brush in the power connection chamber 39; the slip ring can be electrically connected to the storage battery 6 through a wire; in this way, power can be supplied to the DC electromagnet 5 rotating with the turntable 4. Supplying power to a rotating electrical component through the combination of a slip ring and a brush is a mature prior art, and the structures and principles of the slip ring and the brush will not be elaborated here.

[0069] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that, without departing from the principles and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A casting polishing device, characterized in that: include: A polishing barrel (1) for containing the casting and the ferromagnetic abrasive; and A driving mechanism for driving the ferromagnetic abrasive to move in the polishing barrel (1); in, The axis of the polishing barrel (1) points in the horizontal direction, and the polishing barrel (1) is provided with a take-in and put-out opening (2) at the top and is fitted with a sealing cover (3); The driving mechanisms are provided in two pieces and are distributed at both ends of the polishing barrel (1); The driving mechanism comprises: a rotating disk (4), a plurality of DC electromagnets (5) mounted on the rotating disk (4), a storage battery (6) for supplying power to the DC electromagnets (5), and a first power source (7) for driving the rotating disk (4) to rotate; The axis of the turntable (4) coincides with the axis of the polishing barrel (1), and the line connecting the N pole and the S pole of the DC electromagnet (5) is perpendicular to the axis of the polishing barrel (1); The polishing barrel (1) comprises: a barrel (8) with openings at both ends, and a collection chamber (9) installed at the ends of the barrel (8) and completely covering the openings; The confluence chamber (9) is provided with an opening (10) on a side facing the barrel (8), and a sieve plate (11) is installed at the opening (10) for air flow to pass through; The confluence chamber (9) is provided with a reflux interface (12), and the reflux interfaces (12) of the two confluence chambers (9) are respectively connected to the two ends of the plug chamber (13); A piston (14) is provided in the plug chamber (13) to separate the reflux interfaces (12) connected at both ends; The piston (14) is adapted to be driven by a second power source (15) to reciprocate along the piston chamber (13); The collecting chamber (9) is provided with a slag discharge pipe (25) extending downward, and the lower end of the slag discharge pipe (25) is detachably connected to the slag collecting chamber (26); The slag discharge pipe (25) is provided with a return air branch pipe (27) above the slag collection chamber (26), and the reflux interface (12) is provided at one end of the return air branch pipe (27) away from the slag discharge pipe (25); The slag discharge pipe (25) is provided with a filtering mechanism; The filtering mechanism comprises: a cylindrical filter cloth (28), and a frame (29) for pressing two ends of the filter cloth (28) against the inner wall of the pipe; The filter cloth (28) is intercepted at the connection point between the slag discharge pipe (25) and the return air branch pipe (27); A sealing member (30) is provided in the slag collecting chamber (26); The sealing member (30) comprises: a sealing cone (31) which is smaller at the top and larger at the bottom, and a guide cylinder (32) connected to the bottom of the sealing cone (31); A guide column (33) cooperating with the guide cylinder (32) is provided at the bottom of the slag collecting chamber (26); A compression spring (34) is provided at the top of the guide column (33) to apply an upward thrust to the sealing member (30); The maximum diameter of the sealing cone (31) is greater than the inner diameter of the slag discharge pipe (25), so as to seal the lower end of the slag discharge pipe (25) under the drive of the compression spring (34).

2. The casting polishing device according to claim 1, characterized in that: The piston (14) comprises: a plug body (16) and a plug rod (17) coaxially connected to the plug body (16); The plug rod (17) passes through the plug chamber (13) and is hinged to one end of a connecting rod (18); the other end of the connecting rod (18) is hinged to a crankshaft (19); The second power source (15) is a servo motor, and drives the piston (14) to reciprocate along the piston chamber (13) by driving the crankshaft (19) to rotate.

3. The casting polishing device according to claim 1, characterized in that: The diameter of the sieve plate (11) is smaller than the inner diameter of the barrel (8), and the sieve plate (11) is located outside the collection chamber (9); The confluence chamber (9) is provided with a first annular groove (20) and a second annular groove (21) on the side facing the barrel (8), and the second annular groove (21) is located outside the first annular groove (20); The end of the barrel (8) is installed in the first annular groove (20) corresponding to the confluence chamber (9); The access opening (2) is arranged at the top of the barrel wall of the barrel (8); The sealing cover (3) is arc-shaped, and its end is limited in the second annular groove (21) corresponding to the confluence chamber (9); the sealing cover (3) and the confluence chamber (9) are in sliding connection; The cover (3) is provided with a positioning portion (23) having a first positioning hole (22) at the outer end portion, and the confluence chamber (9) is correspondingly provided with a second positioning hole and is adapted with a positioning pin (24).

4. The casting polishing device according to claim 3, characterized in that: The barrel (8) is provided with an elastic sealing member surrounding the access opening (2) on the outer side of the barrel wall, so as to form a seal when the cover (3) covers the access opening (2).

5. The casting polishing device according to any one of claims 2 to 4, characterized in that: It also includes: support platforms (35) arranged at both ends of the polishing barrel (1); A ring frame (36) is arranged on the top of the support platform (35), and the collection chamber (9) is installed in the ring frame (36); The turntable (4) is rotatably connected to the ring frame (36) via a slewing bearing (37); The first power source (7) is installed on the top of the support platform (35).

6. The casting polishing device according to claim 5, characterized in that: The first power source (7) is an AC coil; When the AC coil and the DC electromagnet (5) are energized, the AC coil applies force to the DC electromagnet (5) through the changing magnetic field generated by the AC coil, thereby driving the turntable (4) to rotate.

7. The casting polishing device according to claim 5, characterized in that: A wire tube (38) extending upward is installed on the top of the storage battery (6), and a power connection chamber (39) is provided on the top of the wire tube (38); The power connection chamber (39) is provided with brushes and slip rings; The slip ring is electrically connected to the battery (6), and the brush is electrically connected to the DC electromagnet (5).

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