Debinding machine and debinding method during the processing of NdFeB materials

Abstract

The present invention relates to the technical field of NdFeB degumming equipment, and in particular discloses a degumming machine and a degumming method during the processing of NdFeB materials, including a frame. A bearing seat is fixed inside the frame, and a transmission shaft is rotatably installed in the bearing seat. One end of the transmission shaft is fixed with a drum. Two screw shafts are symmetrically arranged on the lower side of the end of the drum away from the bearing seat. Support bearings are fixed on the screw shafts, and the support bearings are in contact with the outer wall of the drum. The beneficial effects are as follows: By adopting the principle of electromagnetic induction heating, the metal material is heated to above 200 degrees Celsius in a short time, so that the glue attached to the metal material reaches the melting point and melts or vaporizes. At the same time, it is combined with the quartz sand in the drum for stir-frying, which can perfectly separate the glue attached to the metal product, effectively improving the production efficiency and reducing the operation difficulty. After configuring a smoke and dust filtration system, pollution-free metal degumming can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of neodymium iron boron degumming equipment, and particularly relates to a degumming machine and a degumming method in the processing of neodymium iron boron materials. Background Art

[0002] When cutting neodymium iron boron materials, there is a gluing process. However, when making finished products subsequently, the previously applied glue needs to be removed. The traditional degumming process is to degum by boiling the materials in alkali water. However, this method has many disadvantages, such as: difficult operation, high use cost, the solution is always in a boiling high-temperature state, has a pungent smell, the alkali water is difficult to treat, and the materials need to be manually shaken regularly during the boiling process, which is easy to damage the products, etc. Summary of the Invention

[0003] The present invention is to propose a degumming machine and a degumming method in the processing of neodymium iron boron materials to solve the above problems.

[0004] The technical solution of the present invention is realized as follows:

[0005] A degumming machine in the processing of neodymium iron boron materials includes a frame. A bearing seat is fixed inside the frame. A transmission shaft is rotatably installed in the bearing seat. One end of the transmission shaft is fixed with a drum. Two screw shafts are symmetrically arranged on the lower side of the end of the drum far from the bearing seat. The screw shafts are fixed on the frame. Support bearings are fixed on the screw shafts. The support bearings are in contact with the outer wall of the drum. The other end of the transmission shaft is fixed with a passive pulley. The passive pulley is connected by a V-belt to an active pulley. The active pulley is fixed on the power output shaft of a speed reducer at the bottom inside the frame. The speed reducer is connected to a motor. A heating wire base is fixed at a position inside the frame below the drum. A double-layer electromagnetic heating coil is fixed on the side of the heating wire base facing the drum. An outlet is opened at the end of the drum far from the transmission shaft. A feeding hopper is fixed on the frame corresponding to the outlet of the drum. The feeding hopper is semi-circular. The frame is fixedly connected by a detachable connection at a position corresponding to the upper part of the drum. A smoke collecting hood is fixed above the position of the outlet of the drum on the upper cover. A smoke exhaust pipe is fixed on the smoke collecting hood.

[0006] Further, two groups of moving wheels are fixed at the bottom of the frame. At least one group of the two groups of moving wheels is a universal wheel.

[0007] Further, an electric control box is fixed on the frame. A control panel is inlaid on the electric control box. A controller electrically connected to the motor and the electromagnetic heating coil is fixed inside the electric control box.

[0008] Further, three groups of spiral scrapers are fixedly arranged in an annular array on the inner wall of the drum. Each group of spiral scrapers includes at least three spiral blades distributed along the length direction of the drum, and the spiral blades in the same group do not contact each other.

[0009] Further, the transmission shaft is fixedly concentric with the drum. The transmission shaft is of a hollow structure, and a sensor fixing rod is inserted into the transmission shaft. One end of the sensor fixing rod is fixed on the inner wall of the frame, and the other end of the sensor fixing rod is inserted into the drum. A data acquisition sensor electrically connected to the controller in the electric control box is fixed at the end of the sensor fixing rod inserted into the drum.

[0010] Further, a heat preservation sleeve is fixed on the outer wall of the drum.

[0011] A method for degumming neodymium iron boron materials includes the following steps:

[0012] Step 1: Put quartz stones and the neodymium iron boron products to be processed into the drum at a ratio of 1:1.

[0013] Step 2: Control the motor to start by pressing the control button on the control panel. Drive the transmission shaft to rotate through the speed reducer, the driving pulley, the V-belt, and the driven pulley, and then drive the drum to rotate.

[0014] Step 3: Control the electromagnetic heating coil to generate heat by pressing the control button on the control panel, so as to heat the quartz stones and neodymium iron boron in the drum. Heat to 200 - 230 °C, and use the high temperature to vaporize the colloid on the surface of the neodymium iron boron.

[0015] Step 4: Synchronously start the induced draft fan connected to the smoke exhaust pipe when starting the electromagnetic heating coil. The suction generated by the induced draft fan sucks the hot air containing the vaporized colloid into the smoke and dust filtration system for purification.

[0016] Step 5: After reaching the set time, stop the electromagnetic heating coil and the induced draft fan, and start the motor in reverse. The motor drives the drum to rotate in reverse. Under the action of the spiral scraper, the quartz stones and neodymium iron boron products after degumming in the drum are discharged from the drum. Place a storage container below the hopper to collect the quartz stones and neodymium iron boron products after degumming.

[0017] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: 1. Adopting the principle of electromagnetic induction heating, heating the metal material to above 200 degrees Celsius in a short time, so that the glue attached to the metal material reaches the melting point to melt or vaporize. At the same time, cooperating with the quartz sand in the drum for frying, the glue attached to the metal product can be perfectly separated, effectively improving the production efficiency and reducing the operation difficulty. After configuring the smoke and dust filtration system, pollution-free metal degumming can be achieved.

[0018] 2. The three-component segmented spiral blade is adopted. During the process of the roller rolling and stir-frying, the product will not fall down to the top of the roller along with the spiral scraper all the way, but will fall to the middle of the roller by its own weight at the position of one-third of the roller height, reducing the stir-frying height when stir-frying the product, greatly reducing the problem of the material being knocked or damaged, and effectively improving the qualified rate of the product. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the main sectional view of the present invention;

[0021] Figure 2 It is the first three-dimensional view of the present invention;

[0022] Figure 3 It is the second three-dimensional view of the present invention;

[0023] Figure 4 It is the front view of the present invention;

[0024] Figure 5 It is the top view of the present invention;

[0025] Figure 6 It is the side sectional view of the present invention;

[0026] Figure 7 It is the circuit structure block diagram of the present invention.

[0027] The description of the reference numerals in the drawings is as follows:

[0028] 1. Frame; 2. Heating wire base; 3. Electromagnetic heating coil; 4. Reducer; 5. Motor; 6. Driving pulley; 7. V-belt; 8. Driven pulley; 9. Transmission shaft; 10. Roller; 11. Sensor fixing rod; 12. Bearing seat; 13. Support bearing; 14. Screw shaft; 15. Feeding hopper; 16. Upper cover; 17. Electric control box; 18. Control panel; 19. Spiral scraper; 20. Movable wheel; 21. Smoke collecting hood; 22. Exhaust pipe. Detailed Embodiments

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1 - 7 shown, a degumming machine in the processing of NdFeB materials includes a frame 1. The frame 1 is the carrier of the entire degumming device. Two sets of moving wheels 20 are fixed at the bottom of the frame 1. At least one of the two sets of moving wheels 20 is a universal wheel, which is convenient for moving the position of the machine. A bearing seat 12 is fixed inside the frame 1. A transmission shaft 9 is rotatably installed in the bearing seat 12. One end of the transmission shaft 9 is fixed with a drum 10. Two screw shafts 14 are symmetrically arranged on the lower side of the end of the drum 10 away from the bearing seat 12. The screw shafts 14 are fixed on the frame 1. Support bearings 13 are fixed on the screw shafts 14. The support bearings 13 are in contact with the outer wall of the drum 10. The drum 10 falls between the two support bearings 13 by its own weight. The other end of the transmission shaft 9 is fixed with a passive pulley 8. The passive pulley 8 is connected by a V-belt 7 to an active pulley 6. The active pulley 6 is fixed on the power output shaft of a speed reducer 4 at the inner bottom of the frame 1. The speed reducer 4 is connected to a motor 5. A heating wire base 2 is fixed at a position inside the frame 1 below the drum 10. A double-layer electromagnetic heating coil 3 is fixed on the side of the heating wire base 2 facing the drum 10. When energized, the electromagnetic heating coil 3 will generate a high-frequency alternating magnetic field to directly heat the NdFeB product, and at the same time heat the drum 10. The drum 10 transfers heat to the quartz sand and the NdFeB product through heat conduction. This kind of coil can provide a more intensive alternating magnetic field, which can increase the product coverage area and the heating magnetic field density. This heating method can reach above 200 degrees Celsius in a very short time, melting or vaporizing the colloid, making the heating speed faster and the efficiency higher. An outlet is opened at the end of the drum 10 away from the transmission shaft 9. The outlet of the drum 10 is a cylinder with a diameter of 320 mm. A feeding hopper 15 is fixed at the position of the frame 1 corresponding to the outlet of the drum 10. The feeding hopper 15 is semi-circular. Such a design makes the height of the NdFeB product falling from the outlet to the feeding hopper 15 within 80 mm, effectively solving the problems of product bumping and corner chipping caused by too large a falling height. An upper cover 16 is fixed at the position above the drum 10 on the frame 1 through a detachable connection. A smoke collecting hood 21 is fixed at the position of the upper cover 16 above the outlet of the drum 10. A smoke exhaust pipe 22 is fixed on the smoke collecting hood 21. The smoke exhaust pipe 22 is connected to a smoke and dust filtering system through an induced draft fan, which can treat the generated waste gas and reduce air pollution during the degumming process. An electric control box 17 is fixed on the frame 1. A control panel 18 is inlaid on the electric control box 17. A controller electrically connected to the motor 5 and the electromagnetic heating coil 3 is fixed inside the electric control box 17.

[0031] In this embodiment, three groups of spiral scrapers 19 are fixedly arranged in an annular array on the inner wall of the drum 10. Each group of spiral scrapers 19 includes at least three spiral blades distributed along the length direction of the drum 10. The spiral blades in the same group do not contact each other. The spiral scrapers 19 that rotate with the drum 10 can drive the quartz sand and neodymium iron boron material to be stir-fried in the drum 10. During the process of the neodymium iron boron material being stir-fried and rolled in the drum 10, the product will not fall down to the top of the drum 10 along with the spiral blades all the time, but will fall to the middle of the drum 10 due to its own weight at a position one-third of the height of the drum 10. This reduces the stir-frying height when stir-frying the product, greatly reduces the problem of the material being damaged by knocking or collision, effectively improves the qualified rate of the product. At the same time, reverse rotation can facilitate the export of the degummed quartz sand and neodymium iron boron products from the drum 10. The operation is simple, and degumming can be completed once in 20 minutes, with high efficiency.

[0032] In this embodiment, the transmission shaft 9 is fixedly concentric with the drum 10. The transmission shaft 9 is of a hollow structure. A sensor fixing rod 11 is inserted into the transmission shaft 9. One end of the sensor fixing rod 11 is fixed on the inner wall of the frame 1, and the other end of the sensor fixing rod 11 is inserted into the interior of the drum 10. A temperature sensor electrically connected to the controller in the electric control box 17 is fixed at the end of the sensor fixing rod 11 inserted into the drum 10, realizing precise monitoring of the temperature inside the drum 10.

[0033] In this embodiment, a heat preservation sleeve is fixed on the outer wall of the drum 10, reducing heat loss and improving heating efficiency.

[0034] This device can also be used for degumming other metal products.

[0035] A method for degumming neodymium iron boron material includes the following steps:

[0036] Step 1: Put quartz stone and the neodymium iron boron product to be processed into the drum at a ratio of 1:1.

[0037] Step 2: Control the motor to be powered on and started through the control buttons on the control panel. Drive the transmission shaft to rotate through the speed reducer, the driving pulley, the V-belt, and the driven pulley, and then drive the drum to rotate.

[0038] Step 3: Control the electromagnetic heating coil to be powered on and generate heat through the control buttons on the control panel, realizing heating of the quartz stone and neodymium iron boron in the drum. Heat to 200 - 230 °C, and use the high temperature to vaporize the colloid on the surface of the neodymium iron boron.

[0039] Step 4: Start the induced draft fan connected to the smoke exhaust pipe synchronously when starting the electromagnetic heating coil. The suction generated by the induced draft fan sucks the hot air containing the vaporized colloid into the smoke and dust filtration system for purification.

[0040] Step 5: After reaching the set time, stop the electromagnetic heating coil and the induced draft fan, reverse-start the motor, and the motor drives the drum to rotate in the reverse direction. Under the action of the spiral scraper, the degummed quartz stones and neodymium iron boron products in the drum are discharged from the drum. A storage container can be placed below the hopper to collect the degummed quartz stones and neodymium iron boron products.

[0041] The circuit connection involved in the present invention is a commonly used means adopted by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, belonging to the widely used prior art.

[0042] The components not described in detail in this article are prior art.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A degumming machine during the processing of NdFeB materials, comprising a frame (1), characterized in that: Two sets of moving wheels (20) are fixed at the bottom of the frame (1), and at least one set of the two sets of moving wheels (20) is a universal wheel. A bearing seat (12) is fixed inside the frame (1). A transmission shaft (9) is rotatably installed in the bearing seat (12). One end of the transmission shaft (9) is fixed with a drum (10). Two screw shafts (14) are symmetrically arranged on the lower side of the end of the drum (10) away from the bearing seat (12). The screw shafts (14) are fixed on the frame (1). Support bearings (13) are fixed on the screw shafts (14). The support bearings (13) are in contact with the outer wall of the drum (10). The other end of the transmission shaft (9) is fixed with a driven pulley (8). The driven pulley (8) is drivingly connected with a driving pulley (6) through a V-belt (7). The driving pulley (6) is fixed on the power output shaft of a speed reducer (4) at the inner bottom of the frame (1). The speed reducer (4) is drivingly connected with a motor (5). A heating wire base (2) is fixed inside the frame (1) at a position below the drum (10). A double-layer electromagnetic heating coil (3) is fixed on the side of the heating wire base (2) facing the drum (10). An outlet is formed at the end of the drum (10) away from the transmission shaft (9). A feeding hopper (15) is fixed on the frame (1) corresponding to the outlet of the drum (10). The feeding hopper (15) is semi-circular in shape. An upper cover (16) is fixed on the frame (1) corresponding to the upper part of the drum (10) through a detachable connection. A smoke collecting hood (21) is fixed above the position of the outlet of the drum (10) on the upper cover (16). A smoke exhaust pipe (22) is fixed on the smoke collecting hood (21). Three groups of spiral scrapers (19) are fixedly arranged in a circular array on the inner wall of the drum (10). Each group of spiral scrapers (19) includes at least three spiral blades distributed along the length direction of the drum (10). The spiral blades in the same group do not contact each other. The spiral scrapers (19) rotating with the drum (10) can drive the quartz sand and neodymium iron boron material to be stir-fried in the drum (10).

2. The degumming machine in the processing of neodymium iron boron materials according to claim 1, wherein: An electric control box (17) is fixed on the frame (1). A control panel (18) is inlaid on the electric control box (17). A controller electrically connected to the motor (5) and the electromagnetic heating coil (3) is fixed inside the electric control box (17).

3. The debinding machine during the processing of neodymium iron boron materials according to claim 2, characterized in that: The transmission shaft (9) is concentrically fixed with the drum (10). The transmission shaft (9) is of a hollow structure. A sensor fixing rod (11) is inserted into the transmission shaft (9). One end of the sensor fixing rod (11) is fixed on the inner wall of the frame (1). The other end of the sensor fixing rod (11) is inserted into the inside of the drum (10). A data acquisition sensor electrically connected to the controller inside the electric control box (17) is fixed at the end of the sensor fixing rod (11) inserted into the drum (10).

4. A degumming machine during the processing of neodymium iron boron materials according to claim 3, characterized in that: A heat preservation sleeve is fixed on the outer wall of the drum (10).

5. A method for degumming neodymium iron boron materials in a degumming machine during the processing of the neodymium iron boron materials described in any one of claims 1-4, characterized in that: Comprising the following steps: Step 1: Put the quartz stone and the neodymium iron boron product to be processed into the drum (10) at a ratio of 1:1; Step 2: Control the motor (5) to start energizing through the control buttons on the control panel (18). Drive the transmission shaft (9) to rotate through the speed reducer (4), the driving pulley (6), the V-belt (7), and the driven pulley, and then drive the drum (10) to rotate; Step 3: Control the electromagnetic heating coil (3) to generate heat by energizing through the control buttons on the control panel (18), so as to heat the quartz stone and neodymium iron boron in the drum (10). Heat to 200 - 230 °C, and use the high temperature to vaporize the colloid on the surface of the neodymium iron boron; Step 4: Synchronously start the induced draft fan connected to the smoke exhaust pipe (22) when starting the electromagnetic heating coil (3). The suction generated by the induced draft fan sucks the hot air containing the vaporized colloid into the dust filtration system for purification; Step 5: After reaching the set time, stop the electromagnetic heating coil (3) and the induced draft fan, and reverse-start the motor (5). The motor (5) drives the drum (10) to rotate in the reverse direction. Under the action of the spiral scraper (19), the quartz stone and neodymium iron boron products after degumming in the drum (10) are discharged from the drum (10). Place a storage container under the hopper (15) to collect the quartz stone and neodymium iron boron products after degumming.

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