Magnetic projectile

Abstract

This invention discloses a magnetic shot blaster, relating to the field of metal surface treatment technology. It includes a housing, bearings, end caps, roller plates, a power roller, a pulley, a drive motor, and a controller. Bearings and end caps are installed at both ends of the housing. Roller plates are fixed to the inner rings of both bearings and are positioned opposite each other. The power roller is placed inside the housing, and connecting shafts are fixed to both ends of the power roller. The two connecting shafts are fixed within the two roller plates. One end of one connecting shaft extends out of the housing and is fixed to a pulley. The pulley is rotatably connected to the drive motor via a belt. A through hole is coaxially formed between the power roller and the connecting shaft. The magnetic attraction mechanism is electrically connected to the power supply and the controller. The advantages of this invention are: the controller allows for range control of the magnetic force on the surface of the power roller, facilitating adjustment of the flow rate of steel shot during adsorption; adjusting the angle of the guide plate with bolts controls the shot blasting angle range, reducing wear and increasing service life.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment technology, specifically to a magnetic projector. Background Technology

[0002] Shot blasting is the name of a mechanical surface treatment process. In the process of metal cold treatment, shot blasting is usually required. Shot blasting can effectively remove dirt, oxide layer, burrs and other substances from the metal surface, thereby improving the surface quality and service life of metal parts.

[0003] Current shot blasting processes mainly use shot blasting machines. Since the shot blasting process involves propelling steel shot, prolonged operation causes significant wear on the impeller inside the shot blasting machine. Most shot blasting machines are equipped with flow control valves on their feed pipes to control the feed of steel shot. The feeding process of the steel shot also causes wear on the valve core of the flow control valve, leading to a shortened lifespan, large flow fluctuations, and an inability to adjust the flow rate quickly and in real time. Therefore, frequent replacement or repair of parts is required, resulting in relatively high maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetic projectile to solve the problems mentioned in the background art.

[0005] This invention is implemented by the following technical solution:

[0006] A magnetic projectile includes a housing, bearings, end caps, roller plates, a power roller, a pulley, a drive motor, and a controller. The housing is assembled from a front housing and a rear housing. Bearings and end caps are installed at both ends of the housing. Roller plates are fixed to the inner rings of the two bearings. The power roller is placed inside the housing. Connecting shafts are fixed at both ends of the power roller. The two connecting shafts are fixed inside the two roller plates. One end of one connecting shaft extends out of the housing and is fixed with a pulley. The pulley is rotatably connected to the drive motor via a belt. The power roller and the connecting shaft are coaxially provided with a through hole. Several magnetic attraction components are evenly arranged on the power roller. The magnetic attraction mechanism is provided on the power roller, the connecting shaft, and the through hole. The magnetic attraction mechanism is electrically connected to the power supply and the controller. A guide plate is rotatably arranged on the front housing. The upper surface of the guide plate is in contact with the surface of the power roller. A feed pipe is installed on the rear housing.

[0007] The outer surface of the middle part of the power roller is evenly provided with several pairs of strip grooves. The two end faces of the middle part of the power roller are provided with several wiring grooves that correspond to and communicate with the strip grooves. The surface of the connecting shaft is provided with an annular groove. The annular groove is provided with slots corresponding to the number of wiring grooves. Each slot is fixed with a limit stop.

[0008] Each magnetic attraction assembly includes several pairs of magnetic strip assemblies, a first wire, a second wire, contact terminals, a compression spring, and a rubber retaining ring. Each pair of magnetic strip assemblies includes two metal magnetic strips, and each pair of slots corresponds to one pair of magnetic strip assemblies. The metal magnetic strips are embedded in the slots one by one. One end of the two metal magnetic strips in each pair of magnetic strip assemblies is connected by the first wire, and the middle part of the first wire passes through the through hole and the corresponding slot. The other end of the two metal magnetic strips in each pair of magnetic strip assemblies is connected to the contact terminal by the second wire. The contact terminal is elastically slidably disposed in the slot. One end of the contact terminal is movably disposed in the through hole and in movable contact with the electrode surface. A locking block is fixed on the contact terminal and movably abuts against the limiting block. The other end of the contact terminal is fixed to one end of the compression spring, and the other end of the compression spring abuts against the inner surface of the rubber retaining ring, which is sleeved in the annular groove.

[0009] Preferably, the magnetic attraction mechanism includes a bracket, a telescopic device, an electrode, a magnetic attraction assembly, and a terminal block; the bracket is fixed on the end cover, the telescopic device is installed on the bracket, one end of the piston rod of the telescopic device is fixed with an electrode, the electrode is inserted into the through hole, the electrode makes active contact with the contact terminal of the magnetic attraction assembly to form a closed loop, so that the magnetic attraction assembly generates magnetic force, the terminal block is installed on the bracket, one end of the terminal block is connected to the electrode, the other end of the terminal block is connected to the power supply, the telescopic device is electrically connected to the controller, and the controller is installed on the housing.

[0010] Preferably, the telescopic device is an electric push rod, an electric screw jack, or a telescopic cylinder.

[0011] Preferably, in the natural state of the compression spring, the lengths of the contact terminals corresponding to several pairs of magnetic strip assemblies extending into the through hole are not uniform, and the electrodes are frustum-shaped.

[0012] Preferably, a rotating shaft is rotatably mounted on the front housing, and multiple connecting plates are fixed on the rotating shaft. Each connecting plate has two symmetrically formed strip-shaped slots, and threaded holes corresponding to the strip-shaped slots are formed on the strip-shaped slots. A first bolt can slide in the strip-shaped slot and is threadedly connected to the threaded hole through the strip-shaped slot, thereby fixing and clamping the connecting plate and the guide plate. An arc-shaped slide rail is installed on one side of the front housing, and a nut is slidably mounted in the arc-shaped slide rail. A second bolt is threadedly connected to the nut, and the end of the second bolt abuts against the end face of the guide plate for clamping and fixing, thereby realizing the angle adjustment of the guide plate.

[0013] Preferably, the two lower surfaces of the two rollers respectively abut against the two end faces of the power roller.

[0014] Preferably, one end of the contact terminal has two cylindrical grooves, and one end of the compression spring is fixed in the cylindrical groove.

[0015] Preferably, the contact surfaces of the magnetic strip assembly, the first wire, the second wire, and the power roller are all coated with an insulating layer.

[0016] The advantages of this invention are: by controlling the piston rod of the telescopic device to drive the electrode to contact and connect with several pairs of contact terminals through the controller, the range of magnetic force on the surface of the power roller can be increased or decreased, which facilitates the adjustment of the flow rate of steel shot during adsorption and achieves flow control of shot blasting; at the same time, by adjusting the angle of the guide plate, the range of shot blasting angle can be controlled; the wear of steel shot on the power roller is reduced by using magnetic attraction, which reduces the equipment maintenance cost and improves the service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial structural schematic diagram of the present invention;

[0021] Figure 5 This is a sectional view of a portion of the structure;

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is a structural schematic diagram of the power roller and connecting shaft;

[0024] Figure 8 This is a structural schematic diagram of the power roller, connecting shaft, and rubber retaining ring.

[0025] Figure 9 for Figure 8 Sectional view at point C;

[0026] Figure 10 This is a schematic diagram of the contact terminal and compression spring.

[0027] Figure 11 This is a structural diagram of the guide plate, rotating shaft, and connecting plate.

[0028] In the diagram: 1. Housing; 1.1. Front Housing; 1.2. Rear Housing; 2. Bearing; 3. End Cap; 4. Roller Plate; 5. Power Roller; 5.1. Connecting Shaft; 5.2. Through Hole; 5.3. Strip Groove; 5.4. Wiring Groove; 5.5. Annular Groove; 5.6. Slot; 5.61. Limiting Block; 6. Pulley; 7. Drive Motor; 8. Bracket; 9. Telescopic Device; 10. Electrode; 11. Magnetic Assembly; 11.1. Magnetic Strip Assembly 11.2 First wire, 11.3 Second wire, 11.4 Contact terminal, 11.41 Clamp, 11.42 Cylindrical groove, 11.5 Compression spring, 11.6 Rubber retaining ring, 12 Wiring terminal, 13 Controller, 14 Guide plate, 15 Feed pipe, 16 Rotating shaft, 17 Connecting plate, 17.1 Strip groove, 18 First bolt, 19 Arc slide rail, 20 Nut, 21 Second bolt. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-11 This invention provides a magnetic projectile technical solution:

[0031] A magnetic projectile includes a housing 1, bearings 2, end caps 3, roller plates 4, a power roller 5, a pulley 6, a drive motor 7, and a controller 13. The housing 1 is assembled from a front housing 1.1 and a rear housing 1.2. Bearings 2 and end caps 3 are installed at both ends of the housing 1. Roller plates 4 are fixed to the inner rings of the two bearings 2. The power roller 5 is placed inside the housing 1, and connecting shafts 5.1 are fixed to both ends of the power roller 5. The two connecting shafts 5.1 are fixed inside the two roller plates 4, one of which is connected to the other. One end of the connecting shaft 5.1 extends out of the housing 1 and is fixed with a pulley 6. The pulley 6 is rotatably connected to the drive motor 7 via a belt. The power roller 5 and the connecting shaft 5.1 are coaxially provided with a through hole 5.2. A magnetic attraction mechanism is provided on the power roller 5, the connecting shaft 5.1 and the through hole 5.2. The magnetic attraction mechanism is electrically connected to the power supply and the controller 13 respectively. A guide plate 14 is rotatably provided on the front housing 1.1. The upper surface of the guide plate 14 is in contact with the surface of the power roller 5. A feed pipe 15 is installed on the rear housing 1.2.

[0032] The magnetic attraction mechanism includes a bracket 8, a telescopic device 9, an electrode 10, magnetic attraction components 11, and a terminal block 12. The bracket 8 is fixed to the end cover 3, and the telescopic device 9 is installed on the bracket 8. The telescopic device 9 can be an electric push rod, an electric screw jack, or a telescopic cylinder. One end of the piston rod of the telescopic device 9 is fixed with an electrode 10, which passes through the through hole 5.2. Several magnetic attraction components 11 are evenly arranged on the power roller 5. The electrode 10 and the contact terminal 11.4 of the magnetic attraction component 11 make active contact to form a closed circuit, so that the magnetic attraction component 11 generates magnetic force. The terminal block 12 is installed on the bracket 8. One end of the terminal block 12 is connected to the electrode 10, and the other end of the terminal block 12 is connected to the power supply. The telescopic device 9 is electrically connected to the controller 13, which is installed on the housing 1.

[0033] The outer surface of the middle part of the power roller 5 is evenly provided with several pairs of strip grooves 5.3. Both ends of the middle part of the power roller 5 are provided with several wiring grooves 5.4 that correspond one-to-one with the strip grooves 5.3. The surface of the connecting shaft 5.1 is provided with an annular groove 5.5. The annular groove 5.5 is provided with slots 5.6 corresponding to the number of wiring grooves 5.4. Each slot 5.6 is fixed with a limit stop 5.61.

[0034] Each magnetic attraction assembly 11 includes several pairs of magnetic strip assemblies 11.1, a first wire 11.2, a second wire 11.3, a contact terminal 11.4, a compression spring 11.5, and a rubber retaining ring 11.6; each pair of magnetic strip assemblies 11.1 includes two metal magnetic strips, and each pair of slots 5.3 corresponds to one pair of magnetic strip assemblies 11.1; the metal magnetic strips are embedded one by one in the slots 5.3, and one end of each pair of magnetic strip assemblies 11.1 is connected by a first wire 11.2, with the middle part of the first wire 11.2 passing through the through hole 5.2 and the corresponding slot 5.6; each pair of magnetic strip assemblies 11.2... The other ends of the two metal magnetic strips 1.1 are respectively connected to contact terminals 11.4 through the second wire 11.3; the contact terminals 11.4 are elastically slidably disposed in the slot 5.6, one end of the contact terminal 11.4 is movably disposed in the through hole 5.2 and movably contacts the surface of the electrode 10, and a locking block 11.41 is fixed on the contact terminal 11.4 and movably abuts against the limiting block 5.61, the other end of the contact terminal 11.4 is fixed to one end of the compression spring 11.5, the other end of the compression spring 11.5 abuts against the inner surface of the rubber retaining ring 11.6, and the rubber retaining ring 11.6 is sleeved in the annular groove 5.5.

[0035] In the natural state of the compression spring 11.5, the lengths of the contact terminals 11.4 corresponding to several pairs of magnetic strip assemblies 11.1 extending into the through hole 5.2 are inconsistent, and the electrode 10 is frustum-shaped. When the electrode 10 moves, the more contact terminals 11.4 it contacts, the larger the magnetic force range generated by the magnetic attraction mechanism becomes, and thus the more steel shot is adsorbed. That is, by moving the electrode 10, the flow rate of steel shot thrown out during adsorption can be adjusted, realizing the flow rate control of shot blasting, while reducing the wear of steel shot on the power roller 5.

[0036] A rotating shaft 16 is rotatably mounted on the front housing 1.1. Multiple connecting plates 17 are fixed to the rotating shaft 16. Each connecting plate 17 has two symmetrically formed slots 17.1. Threaded holes corresponding to the slots 17.1 are formed on each slot. The first bolt 18 can slide within the slots 17.1 to adjust the vertical position of the guide plate 14 relative to the rotating shaft 16. This facilitates angle adjustment of the guide plate 14, ensuring that the upper surface of the guide plate 14 is flush with the power source. The surface of roller 5 is in contact with the roller; the first bolt 18 passes through the strip groove 17.1 and is threaded to the threaded hole, fixing and clamping the connecting plate 17 and the guide plate 14. An arc-shaped slide rail 19 is installed on one side of the front housing 1.1. A nut 20 is slidably arranged in the arc-shaped slide rail 19. The nut 20 is threadedly connected to the second bolt 21. The end of the second bolt 21 abuts against the end face of the guide plate 14 for clamping and fixing, thereby realizing the angle adjustment of the guide plate 14 and controlling the range of the steel shot projection angle.

[0037] The two lower surfaces of the two roller plates 4 respectively abut against the two end faces of the power roller 5.

[0038] Two cylindrical slots 11.42 are provided at one end of the contact terminal 11.4, and one end of the compression spring 11.5 is fixed in the cylindrical slot 11.42.

[0039] The contact surfaces of the magnetic strip assembly 11.1, the first wire 11.2, the second wire 11.3, and the power roller 5 are all coated with an insulating layer.

[0040] Working principle of the invention:

[0041] After the device is powered on, according to the requirements of the processing technology, the controller 13 controls the piston rod of the telescopic device 9 to drive the electrode 10 to move a distance within the through hole 5.2, thereby controlling the number of contact terminals 11.4 that come into contact with the electrode 10. After contact, a closed circuit is formed, and the metal magnetic strip generates magnetic force. Steel shot is fed into the feed pipe 15. As the drive motor 7 rotates, the belt makes the power roller 5 rotate synchronously. At the same time, the power roller 5 uses the metal magnetic strip to attract the steel shot and also rotates at high speed. Under the dual action of centrifugal force and guide plate 14, the attracted steel shot can only be thrown out above the guide plate 14. By adjusting the angle of the guide plate 14, the angle range of the steel shot being thrown out is controlled, so that the steel shot is shot onto the metal surface to carry out the shot blasting process.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetic projectile, characterized in that: The device includes a housing, bearings, end caps, roller plates, a power roller, a pulley, a drive motor, and a controller. The housing is assembled from a front housing and a rear housing. Bearings and end caps are installed at both ends of the housing. Roller plates are fixed to the inner rings of the two bearings. The power roller is placed inside the housing. Connecting shafts are fixed at both ends of the power roller. The two connecting shafts are fixed inside the two roller plates. One end of one connecting shaft extends out of the housing and is fixed with a pulley. The pulley is connected to the drive motor via a belt. The power roller and the connecting shaft are coaxially provided with through holes. Several magnetic components are evenly arranged on the power roller. The magnetic attraction mechanism is set on the power roller, the connecting shaft, and the through holes. The magnetic attraction mechanism is electrically connected to the power supply and the controller. A guide plate is rotatably installed on the front housing. The upper surface of the guide plate is in contact with the surface of the power roller. A feed pipe is installed on the rear housing. The outer surface of the middle part of the power roller is evenly provided with several pairs of strip grooves. The two end faces of the middle part of the power roller are provided with several wiring grooves that correspond to and communicate with the strip grooves. The surface of the connecting shaft is provided with an annular groove. The annular groove is provided with slots corresponding to the number of wiring grooves. Each slot is fixed with a limit stop. Each magnetic attraction assembly includes several pairs of magnetic strip assemblies, a first wire, a second wire, contact terminals, a compression spring, and a rubber retaining ring. Each pair of magnetic strip assemblies includes two metal magnetic strips, and each pair of slots corresponds to one pair of magnetic strip assemblies. The metal magnetic strips are embedded in the slots one by one. One end of the two metal magnetic strips in each pair of magnetic strip assemblies is connected by the first wire, and the middle part of the first wire passes through the through hole and the corresponding slot. The other end of the two metal magnetic strips in each pair of magnetic strip assemblies is connected to the contact terminal by the second wire. The contact terminal is elastically slidably disposed in the slot. One end of the contact terminal is movably disposed in the through hole and in movable contact with the electrode surface. A locking block is fixed on the contact terminal and movably abuts against the limiting block. The other end of the contact terminal is fixed to one end of the compression spring, and the other end of the compression spring abuts against the inner surface of the rubber retaining ring, which is sleeved in the annular groove.

2. A magnetic projectile according to claim 1, characterized in that: The magnetic attraction mechanism includes a bracket, a telescopic device, an electrode, a magnetic attraction assembly, and a terminal block. The bracket is fixed to the end cover, and the telescopic device is installed on the bracket. One end of the piston rod of the telescopic device is fixed with an electrode, which is inserted into a through hole. The electrode makes active contact with the contact terminal of the magnetic attraction assembly to form a closed circuit, thereby generating magnetic force in the magnetic attraction assembly. The terminal block is installed on the bracket, with one end connected to the electrode and the other end connected to the power supply. The telescopic device is electrically connected to the controller, which is installed on the housing.

3. A magnetic projectile according to claim 2, characterized in that: The telescopic device is an electric push rod, an electric screw jack, or a telescopic cylinder.

4. A magnetic projectile according to claim 2, characterized in that: In the natural state of the compressed spring, the lengths of the contact terminals corresponding to several pairs of magnetic strip assemblies extending into the through hole are inconsistent, and the electrodes are frustum-shaped.

5. A magnetic projectile according to claim 1, characterized in that: A rotating shaft is rotatably mounted on the front housing, and multiple connecting plates are fixed on the rotating shaft. Each connecting plate has two symmetrically arranged strip-shaped slots, and threaded holes corresponding to the strip-shaped slots are opened on the strip-shaped slots. The first bolt can slide in the strip-shaped slots and is threadedly connected to the threaded holes through the strip-shaped slots, thus fixing and clamping the connecting plate and the guide plate. An arc-shaped slide rail is installed on one side of the front housing, and a nut is slidably mounted in the arc-shaped slide rail. The nut is threadedly connected to a second bolt, and the end of the second bolt abuts against the end face of the guide plate for clamping and fixing, thereby realizing the angle adjustment of the guide plate.

6. A magnetic projectile according to claim 1, characterized in that: The two lower surfaces of the two rollers respectively abut against the two end faces of the power roller.

7. A magnetic projectile according to claim 4, characterized in that: Two cylindrical slots are provided at one end of the contact terminal, and one end of the compression spring is fixed in the cylindrical slot.

8. A magnetic projectile according to claim 2, characterized in that: The contact surfaces of the magnetic strip assembly, the first wire, the second wire, and the power roller are all coated with an insulating layer.

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