A vertical orientation horizontal pressing rare earth permanent magnetic powder forming device

Abstract

The utility model belongs to powder metallurgy technical field provides a kind of rare earth permanent magnetic powder forming device of vertical orientation horizontal pressing, solve the problem that cannot be automatically pressed into shape annulus, pie, radial orientation cylinder, block, tile and so on, device includes automatic weighing cloth mechanism, three electrocylinder magnetic field pressing mechanism, pressing blank stripping mechanism and three-station mould carousel mechanism, the mechanism is placed in sealed cabin uniformly, and there is a set of integrated control system to realize equipment linkage and control;The utility model can accurately control output torque and positioning position, realizes complex pressing action and stripping action, to realize a series of special forming products such as automatic pressing annulus, pie, radial orientation cylinder, block, tile, reduce magnetic declination, improve the performance of rare earth permanent magnetic material finished product.

Description

Technical Field

[0001] This utility model belongs to the field of powder metallurgy technology, specifically relating to a vertically oriented, horizontally pressed rare earth permanent magnet powder forming device. Background Technology

[0002] Powder metallurgy is a process technology that uses metal powders (or mixtures of metal and non-metal powders) as raw materials, and then presses and sintersects them to manufacture metallic materials, composite materials, and various types of products. The preparation of rare earth permanent magnet materials falls under the category of powder metallurgy, and its characteristic is the application of an external orientation magnetic field during the pressing and molding process.

[0003] Rare earth permanent magnet material powder molding blanks come in various shapes, and the final product categories are complex depending on the orientation magnetic field. Due to the influence of the magnetic declination on the molded product, the orientation direction and pressing direction must be perpendicular to each other, and pressing should be carried out along the long side. For pressing products such as rings, discs, radially oriented cylinders, cubes, and tiles, traditional horizontal orientation and vertical pressing molding devices are difficult to implement because they cannot automatically load powder or demold. Furthermore, rare earth permanent magnet material powder pressing molding often uses hydraulic systems as the power source. However, due to the low precision of hydraulic control, slow pressure adjustment response, and the impact of hydraulic oil temperature changes on system stability, blanks pressed by hydraulic control systems often exhibit quality defects. Summary of the Invention

[0004] The main purpose of this utility model is to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology. This utility model provides a vertical orientation horizontal pressing rare earth permanent magnet powder forming device.

[0005] This utility model is achieved through the following technical solution: A vertically oriented, horizontally pressed rare earth permanent magnet powder forming device includes an automatic weighing and feeding mechanism, a three-cylinder magnetic field pressing mechanism, a pressed blank demolding mechanism, and a three-station mold turntable mechanism. These mechanisms are housed within a sealed chamber. The three-cylinder magnetic field pressing mechanism comprises: a magnetically conductive frame, a first servo cylinder, a second servo cylinder, a third servo cylinder, an upper pole post, a mold top cover, a lower pole post, an upper magnetic field coil, and a lower magnetic field coil. The first servo cylinder is vertically mounted above the magnetically conductive frame. The upper end face of the upper pole post is bolted and suspended from the drive shaft of the first servo cylinder. The mold top cover is fixed to the lower end face of the upper pole post, and the upper pole post passes through the upper magnetic field coil. The second and third servo cylinders are respectively mounted on the side walls of the magnetically conductive frame, with their extended ends in a horizontal direction, capable of applying opposing horizontal pressure to the mold cavity. The lower pole post passes through the lower magnetic field coil and is vertically fixed to the bottom surface of the magnetically conductive frame.

[0006] Furthermore, the automatic weighing and feeding mechanism includes a vibrating feeder, a weighing hopper, a discharge cylinder, a discharge cover, a feeding chamber, and a feeding motor; the vibrating feeder is vertically suspended in the sealed chamber, the weighing hopper is installed directly below the vibrating feeder, the feeding chamber is located below the weighing hopper, and the feeding motor is connected to the feeding chamber through a crank, driving the feeding chamber to reciprocate along the horizontal slide rail.

[0007] Furthermore, the fabric compartment is equipped with a fabric compartment partition plate. The upper end of the fabric compartment partition plate is fixed with a fabric compartment flip plate rotation shaft. The fabric compartment flip plate is rotatably connected to the fabric compartment partition plate through the fabric compartment flip plate rotation shaft. The fabric compartment flip plate cylinder is connected to the fabric compartment flip plate through a push rod. The fabric compartment flip plate cylinder drives the fabric compartment flip plate to flip on both sides of the fabric compartment partition plate, and cooperates with the weighing hopper to discharge material into the partition compartments on both sides of the fabric compartment partition plate.

[0008] Furthermore, the three-station mold turntable mechanism includes a turntable body, a material placement station, a pressing station, a demolding station distributed at 120°, a mold loading cylinder, and a turntable rotation servo motor; the three-station mold turntable mechanism is horizontally placed, the turntable rotation servo motor meshes with a gear on the lower surface of the turntable via a reducer, the mold loading cylinder is connected to the turntable body via a push rod, and the forming mold is installed in the three stations on the upper surface of the turntable.

[0009] Furthermore, the pressing blank demolding mechanism includes a demolding cylinder and a material-retrieving airbag; the demolding cylinder is vertically installed directly below the demolding station, and the material-retrieving airbag is installed directly above the demolding station.

[0010] Furthermore, the material-grabbing airbag is fixed by the airbag guide rail. The inside of the material-grabbing airbag is consistent with the shape of the molded blank. The material-grabbing airbag is inflated by air pressure to grasp the molded blank. The material-grabbing airbag is guided from the demolding station to the packaging position for packaging by the airbag guide rail.

[0011] The beneficial effects of this utility model are: The vertically oriented, horizontally pressed rare-earth permanent magnet powder forming device automatically completes the powder weighing and feeding, pressing, and blank demolding processes using a three-station turntable. Three sets of pressing molds are fixed on the three-station turntable, evenly arranged at 120° intervals. After the turntable is in place, the three stations can work simultaneously and independently without interfering with each other. The feeding station automatically weighs and dispenses powder. A partition plate is installed in the middle of the feeding chamber, allowing for separate weighing and dispensing into the partition chambers via a flap, improving the consistency of powder feeding. The three-cylinder magnetic field press can precisely control the output torque and positioning, enabling complex pressing and demolding actions. This allows for the automatic pressing of a series of special-shaped products such as rings, radially oriented cylinders, small cubes, and discs, reducing magnetic declination and improving the performance of the finished products. Attached Figure Description

[0012] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a side view structural diagram of the present invention; Figure 3 This is a schematic diagram of an automatic powder weighing and fabric feeding device; Figure 4 Schematic diagram of a servo electric cylinder magnetic field forming press; Figure 5 This is a schematic diagram of the blank feeding mechanism; In the diagram: 1. Automatic weighing and feeding mechanism; 11. Vibrating feeder; 12. Weighing hopper; 13. Discharge cylinder; 14. Discharge cover plate; 15. Feeding chamber; 151. Feeding chamber cylinder; 152. Feeding chamber guide rail; 153. Crank; 16. Feeding chamber partition plate; 17. Feeding chamber flap cylinder; 18. Feeding chamber flap; 19. Feeding motor; 2. Three-cylinder magnetic field pressing mechanism; 21. Magnetic guide frame; 22. First servo cylinder; 23. Second servo cylinder 24. Electric cylinder; 25. Third servo electric cylinder; 26. Upper pole; 27. Mold top cover; 28. Lower pole; 29. ​​Upper magnetic field coil; 20. Lower magnetic field coil; 3. Three-station mold turntable mechanism; 31. Turntable; 32. Material placement station; 33. Pressing station; 34. Demolding station; 35. Mold loading cylinder; 36. Turntable rotation servo motor; 4. Pressed blank demolding mechanism; 41. Demolding cylinder; 42. Material picking airbag; 43. Airbag guide rail; 5. Sealed chamber. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0014] like Figures 1 to 5 As shown, a vertically oriented, horizontally pressed rare earth permanent magnet powder forming device includes an automatic weighing and feeding mechanism 1, a three-cylinder magnetic field pressing mechanism 2, a three-station mold turntable mechanism 3, and a pressed blank demolding mechanism 4. All the mechanisms are uniformly placed in a sealed chamber 5.

[0015] The automatic weighing and spreading mechanism 1 includes a vibrating feeder 11, a weighing hopper 12, a discharge cylinder 13, a discharge cover 14, and a spreading chamber 15. The vibrating feeder 11 is vertically suspended at the top of the sealed chamber 5. The weighing hopper 12 is installed directly below the feeding port of the vibrating feeder 11. The spreading chamber 15 is located below the weighing hopper 12. The spreading chamber 15 is connected to the spreading motor 19 via a crank 152. A spreading chamber cylinder 151 is connected to the spreading chamber 15 for pressing and lifting the spreading chamber 15. A spreading chamber guide rail 152 is provided below the spreading chamber 15. The spreading motor 19 can drive the spreading chamber 15 to reciprocate along the spreading chamber guide rail 152 via a crank 153.

[0016] The fabric compartment 15 is equipped with a fabric compartment partition plate 16. The upper end of the fabric compartment partition plate 16 is fixed with the rotation shaft of the fabric compartment flip plate 18. The fabric compartment partition plate 16 and the fabric compartment flip plate 18 are rotatably connected through the rotation shaft. The fabric compartment flip plate cylinder 17 is connected to the fabric compartment flip plate 18 through a push rod. The fabric compartment flip plate cylinder 17 drives the fabric compartment flip plate 18 to flip on both sides of the fabric compartment partition plate 16. In conjunction with the weighing hopper 12, the material is discharged to the two partition compartments on both sides of the fabric compartment 15 to ensure that the powder loading of the two partition compartments is consistent, thereby making the fabric distribution in the entire mold more consistent.

[0017] The three-cylinder magnetic field pressing mechanism 2 includes a magnetically conductive frame 21, a first servo cylinder 22, a second servo cylinder 23, a third servo cylinder 24, an upper pole post 25, a mold top cover 26, a lower pole post 27, an upper magnetic field coil 28, and a lower magnetic field coil 29. The first servo cylinder 22 is vertically mounted above the magnetically conductive frame 21. The upper end face of the upper pole post 25 is fixed to the drive shaft of the first servo cylinder 22 by bolts. The mold top cover 26 is fixed to the lower end face of the upper pole post 25. The upper pole post 25 passes through the upper magnetic field coil 28. The second servo cylinder 23 and the third servo cylinder 24 are respectively mounted on the two side walls of the magnetically conductive frame 21. Their protruding ends are horizontally opposite, which can apply horizontally opposite pressure to the mold cavity. The lower pole post 27 passes through the lower magnetic field coil 29 and is vertically fixed to the bottom surface of the magnetically conductive frame 21.

[0018] The three-station mold turntable mechanism 3 includes a turntable 31 body, a material feeding station 32, a pressing station 33, a demolding station 34 distributed at 120° on the turntable 31, a mold loading cylinder 35, and a turntable rotation servo motor 36. The three-station mold turntable mechanism 3 is placed horizontally. The turntable rotation servo motor 36 meshes with a gear fixed at the center of the lower surface of the turntable via a reducer gear set. The mold loading cylinder 35 is connected to the turntable 31 via a push rod. The turntable 31 can be adjusted back and forth along the guide rail on the base under the action of the push rod of the mold loading cylinder 35. The forming molds are respectively installed in the three stations on the surface of the turntable 31.

[0019] The blank demolding mechanism 4 includes a demolding cylinder 41 and a material-retrieving airbag 42. The demolding cylinder 41 is vertically installed directly below the demolding station 34, and the material-retrieving airbag 42 is installed directly above the demolding station 34. The material-retrieving airbag 42 is mounted on the airbag guide rail 43. The inside of the airbag of the material-retrieving airbag 42 is consistent with the shape of the molded blank. The molded blank is grasped by the air pressure of the material-retrieving airbag 42. Then, the material-retrieving airbag 42 is guided from the demolding station 34 to the packaging position for packaging by the airbag guide rail 43.

[0020] Working principle and process of this utility model: An automatic weighing and feeding mechanism 1 is adopted. Powder is fed into the weighing hopper 12 by a vibrating feeder 11. After reaching the weighing weight, the feeding cylinder 13 activates to open the feeding cover 14, and the weighed powder is placed into the feeding chamber 15. After closing the feeding cover 14, the weighing action is repeated. At this time, the feeding flipping cylinder 17 activates to control the feeding chamber flipping 18 to flip. After the second weighing reaches the weighing weight, the feeding cover 14 is opened again, and the powder is placed into the other side of the feeding chamber 15, thus completing the weighing and feeding action. After the mold at the feeding station 32 is in place, the feeding chamber 15 is driven downward and pressed by the feeding chamber cylinder 151. The feeding motor 19 drives the feeding chamber 15 to reciprocate on the feeding chamber guide rail 152 through the crank 153, thus completing the feeding of material into the forming mold at the feeding station 32.

[0021] A three-cylinder magnetic field pressing mechanism 2 is adopted. The first servo cylinder 22 covers the mold top cover 26, and the second and third servo cylinders on both sides press against each other in both directions. The first servo cylinder 22 above the pressing station 33 moves downward. The mold top cover 26 installed on the end face of the upper pole post 25 will press the forming mold on the pressing station 33 according to the set pressure. After the mold top cover 26 is pressed into place, the second servo cylinder 23 and the third servo cylinder 24 simultaneously press against each other. After pressing to the orientation position, the upper magnetic field coil 28 and the lower magnetic field coil 29 are energized to provide the orientation magnetic field. After the orientation current is reached, the first servo cylinder 23 and the second servo cylinder 24 press against each other to the pressing position. After holding the pressure, the first servo cylinder 22, the second servo cylinder 23, and the third servo cylinder 24 return to the initial position, completing the pressing action of the pressing station 33.

[0022] The blank is demolded using a pressing blank demolding mechanism 4. The demolding cylinder 41 lifts the molded blank at the demolding station along with the bottom mold of the mold. At this time, the molded blank is located at the center of the material taking airbag 42. After the material taking airbag 42 is inflated and clamps the molded blank, the demolding cylinder 41 descends to the position. At this time, the material taking airbag 42 is manually pulled to pull the molded blank to the packaging position for packaging via the airbag guide rail 43.

[0023] The three-station mold turntable mechanism 3 can switch the positions of the three stations on the turntable, enabling the three stations to work simultaneously and completely independently. After the corresponding processes are completed at the three stations by the mold loading cylinder 35, the three-station mold turntable mechanism 3 can be pulled out as a whole. Then, the turntable 31 is driven to rotate 120° by the turntable rotation servo motor 36, and then the mold loading cylinder 35 pushes the turntable 31 to the working position. Through the rotation of the turntable 31, the three processes of automatic material feeding, pressing, and demolding can work simultaneously and independently, improving efficiency.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A vertically oriented, horizontally pressed rare earth permanent magnet powder forming device, comprising an automatic weighing and feeding mechanism, a three-cylinder magnetic field pressing mechanism, a pressed blank demolding mechanism, and a three-station mold turntable mechanism, wherein the automatic weighing and feeding mechanism, the three-cylinder magnetic field pressing mechanism, the pressed blank demolding mechanism, and the three-station mold turntable mechanism are housed within a sealed chamber, characterized in that: The three-cylinder magnetic field pressing mechanism includes: a magnetically conductive frame, a first servo cylinder, a second servo cylinder, a third servo cylinder, an upper pole post, a mold top cover, a lower pole post, an upper magnetic field coil, and a lower magnetic field coil. The first servo cylinder is vertically mounted above the magnetically conductive frame. The upper end face of the upper pole post is fixed to the drive shaft of the first servo cylinder by bolts. The mold top cover is fixed to the lower end face of the upper pole post, and the upper pole post passes through the upper magnetic field coil. The second and third servo cylinders are respectively mounted on the side walls of the magnetically conductive frame. The protruding ends of the second and third servo cylinders are horizontal, which can apply opposing horizontal pressure to the mold cavity. The lower pole post passes through the lower magnetic field coil and is vertically fixed to the bottom surface of the magnetically conductive frame.

2. A vertical orientation horizontal compacted rare earth permanent magnetic powder forming device according to claim 1, characterized in that: The automatic weighing and spreading mechanism includes a vibrating feeder, a weighing hopper, a discharge cylinder, a discharge cover, a spreading chamber, and a spreading motor. The vibrating feeder is vertically suspended inside the sealed chamber, the weighing hopper is installed directly below the vibrating feeder, the spreading chamber is located below the weighing hopper, and the spreading motor is connected to the spreading chamber via a crank, driving the spreading chamber to reciprocate along a horizontal slide rail.

3. A vertical orientation horizontal compacted rare earth permanent magnetic powder forming device according to claim 2, characterized in that: The fabric compartment is equipped with a fabric compartment partition plate. The upper end of the fabric compartment partition plate is fixed with a fabric compartment flip plate rotation shaft. The fabric compartment flip plate is rotatably connected to the fabric compartment partition plate through the fabric compartment flip plate rotation shaft. The fabric compartment flip plate cylinder is connected to the fabric compartment flip plate through a push rod. The fabric compartment flip plate cylinder drives the fabric compartment flip plate to flip on both sides of the fabric compartment partition plate, and cooperates with the weighing hopper to discharge material into the partition compartments on both sides of the fabric compartment partition plate.

4. A vertical orientation horizontal compacted rare earth permanent magnetic powder forming device according to claim 1, characterized in that: The three-station mold turntable mechanism includes a turntable body, a material feeding station, a pressing station, a demolding station distributed at 120°, a mold loading cylinder, and a turntable rotation servo motor. The three-station mold turntable mechanism is horizontally placed. The turntable rotation servo motor meshes with a gear fixed at the center of the lower surface of the turntable via a reducer gear set. The mold loading cylinder is connected to the turntable body via a push rod. The forming mold is installed in the three stations on the upper surface of the turntable.

5. A vertical orientation horizontal compacted rare earth permanent magnetic powder forming device according to claim 1, characterized in that: The pressing blank demolding mechanism includes a demolding cylinder and a material-retrieving airbag; the demolding cylinder is vertically installed directly below the demolding station, and the material-retrieving airbag is installed directly above the demolding station.

6. A vertical orientation horizontal compacted rare earth permanent magnetic powder forming device according to claim 5, characterized in that: The material-grabbing airbag is fixed by an airbag guide rail. The inside of the material-grabbing airbag is consistent with the shape of the forming blank. The forming blank is grasped by inflating the material-grabbing airbag with air pressure.

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