Automatic magnetic field forming system and automatic magnetic field forming method

Abstract

The invention discloses an automatic magnetic field forming system which comprises a pressed blank conveying device, a boxing box, a conveying material box, a magnetic field pressing machine, a first glove box, a third isolation valve and a discharging box. The pressed blank conveying device comprises a conveying device shell and a conveying belt; the multiple magnetic field presses are connected to the conveying device shell side by side. The conveying device shell is fixed, and the magnetic field press can move relative to the conveying device shell. And the tail end of the pressed blank conveying device is connected with the boxing box. The pressed blank conveying device serves as a conveying channel of the automatic magnetic field forming system and conveys pressed blanks pressed by the magnetic field pressing machines into the boxing box. The pressed blank conveying device, the boxing box and the magnetic field pressing machine in the working state form a closed space, and the closed space is filled with protective gas; the conveying material box can move to the opposite face of the boxing box to be in butt joint with the boxing box, or the butt joint with the boxing box is relieved, and the conveying material box moves away from the boxing box. The invention further discloses an automatic magnetic field forming method which is implemented by adopting the automatic magnetic field forming system.

Description

Technical Field

[0001] The invention belongs to the field of advanced equipment, and in particular relates to an automatic magnetic field forming system and an automatic magnetic field forming method implemented by the system, which can be used to manufacture rare earth permanent magnetic materials. Background Art

[0002] After 2020, with the development of smart phones, new energy vehicles, robots, artificial intelligence and aerospace, the demand for rare earth permanent magnets is increasing, and rare earths have become a scarce material in the world. Rare earth is a general term for 17 elements, mixed together in the form of oxides. NdFeB rare earth permanent magnets mainly use light rare earths praseodymium and neodymium and heavy rare earths dysprosium and terbium. Praseodymium and neodymium account for about 20% of the total rare earths, and heavy rare earths dysprosium and terbium account for less than 5% of the total rare earths; light rare earth elements such as lanthanum and cerium, which account for 70% of the total rare earths, are not used, and the supply of heavy rare earth elements dysprosium and terbium is tight. The application of rare earth resources is extremely unbalanced, resulting in a huge waste of rare earth resources.

[0003] The industrial preparation of rare earth permanent magnet materials generally adopts powder metallurgy technology, which makes rare earth permanent magnet alloy into 3-5μm powder, forms it under magnetic field orientation, seals it and packs it, presses it isostatically, removes the packaging and vacuum sinters it to obtain rare earth permanent magnet sintered blank, i.e. rare earth permanent magnet material. Rare earth permanent magnet powder is very easy to oxidize and can burn itself in the atmosphere. It must be isolated from the atmosphere during the production process of rare earth permanent magnet. The oxidation problem in the production process has always restricted the development of the industry and seriously affected the consistency of products. At present, the press equipment and vacuum sintering furnace equipment used in the industry have poor production line adaptability. In the process of molding alloy powder into pressed green sheets and sintered green sheets, most of them require manual operation to complete the preparation of materials, placing and packing boxes, stacking boxes and loading furnaces, as well as the transportation of materials between various processes, and the removal of sintered green sheets. This will bring several problems, including that the materials are easily exposed to the external environment during manual operation, resulting in different degrees of oxidation, which affects the further improvement of the performance of rare earth permanent magnet materials; in addition, manual operation will not only reduce production efficiency, consume human resources, and increase production costs, but also affect the stability of product quality due to the uncertainty of manual operation, which will bring a certain defective rate to product production. Therefore, it is urgent to develop a highly automated, intelligent, and better production line adaptable rare earth permanent magnet material preparation industrialization equipment to change this situation in the industry. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes an automatic magnetic field forming system for manufacturing high-quality rare earth permanent magnet materials and matching with a highly automated and intelligent rare earth permanent magnet production line.

[0005] The automatic magnetic field forming system comprises a blank conveying device, a box, a conveying material box and a magnetic field press; the blank conveying device comprises a conveying device shell and a conveyor belt; the conveyor belt is arranged in the conveying device shell; there are multiple magnetic field presses, which are connected to the conveying device shell in parallel; the conveying device shell is fixed, and the magnetic field press can move relative to the conveying device shell; one end of the blank conveying device is connected to the box; the blank conveying device serves as a conveying channel of the automatic magnetic field forming system, and conveys the blanks pressed by each magnetic field press to the box; the blank conveying device, the box and the magnetic field press in a working state are isolated from the atmosphere. The enclosed space is filled with protective gas; the green compacts pressed by the magnetic field press can be automatically transferred to the conveyor belt in the conveying device shell; the box packing box includes a box packing box shell, a material box moving device and a first isolation valve; the material box moving device is arranged in the box packing box shell, and the conveyor belt of the green compact conveying device extends into the box packing box; when the conveyor belt rotates forward, the conveyor belt conveys the green compacts on the conveyor belt to the box packing box shell; in the box packing box, the green compacts are loaded into the sintering material box on the material box moving device; the first isolation valve is connected to the box packing box shell, and is arranged at one end of the box packing box shell, and the other end of the box packing box shell is connected to the conveying device shell.

[0006] The material box moving device can move horizontally and vertically; the material box moving device is provided with a position sensor for indicating and controlling the position of the material box moving device.

[0007] After the box packing box and the conveying material box are docked, the material box moving device can move between the box packing box and the conveying material box.

[0008] In one embodiment, gloves are provided on the box housing, and an operator can use the gloves to place the compacts on the conveyor belt into the sintering material box.

[0009] The conveying material box includes a conveying material box shell, a material box clamping and lifting device, and a second isolating valve; the second isolating valve is connected to the conveying material box shell, and the material box clamping and lifting device is arranged in the conveying material box shell; the conveying material box is filled with protective gas; the conveying material box can be moved to the opposite side of the box loading box and docked with the box loading box, or be released from the box loading box and moved away from the box loading box; after the conveying material box is docked with the box loading box, the first isolating valve and the second isolating valve are opened, the box loading box and the conveying material box constitute a space isolated from the atmosphere, the material box moving device can be moved into the conveying material box, and through the coordinated action of the material box moving device and the material box clamping and lifting device, the multi-layer sintering material boxes on the material box clamping and lifting device can be moved in layers to the material box moving device, or the multi-layer sintering material boxes can be stacked; before the conveying material box is released from the box loading box, the first isolating valve and the second isolating valve are closed, so that the conveying material box and the box loading box respectively constitute a space isolated from the atmosphere, and then the conveying material box loaded with multi-layer sintering material boxes can be moved away from the box loading box.

[0010] After the boxing box and the conveying box are docked, the empty sintering box is moved from the conveying box to the boxing box, and at the same time, the sintering box containing the compact is moved from the boxing box to the conveying box. After the sintering box containing the compact is moved from the boxing box to the conveying box, the conveying box is undocking from the boxing box, and then the conveying box moves away from the boxing box.

[0011] When the conveying box is loaded with empty sintering boxes, the conveying box automatically moves to the opposite side of the box loading box and docks with the box loading box. After docking, the empty sintering boxes are moved from the conveying box to the box loading box to load the compacts.

[0012] In one embodiment, the box further comprises a material taking mechanism; the material taking mechanism is arranged in the box shell, and the material taking mechanism grabs the compacts on the conveyor belt and puts them into the sintering box on the box moving device.

[0013] In another embodiment, a material taking mechanism and a visual system are provided in the box; the visual system automatically finds the compact, guides the material taking mechanism to grab the compact and automatically places the compact into a set position of the sintering material box.

[0014] In a preferred embodiment, a robot and a visual system are provided in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compact on the conveyor belt through the visual system and automatically places the compact into a set position of the set sintering material box.

[0015] A sensor for detecting whether there is a green sheet at the location is arranged near the interface where the magnetic field press is connected to the green sheet conveying device. The sensor is used to control the green sheets pressed by different magnetic field presses to prevent collision.

[0016] In a more preferred embodiment, the automatic magnetic field forming system includes more than 4 magnetic field presses.

[0017] The automatic magnetic field forming system also includes a first glove box, a third isolation valve and a discharge box; the first glove box includes a first glove box shell; the automatic magnetic field forming system also includes a second glove box and a fourth isolation valve; the second glove box includes a second glove box shell; one end of the billet conveying device is connected to the box, the other end of the billet conveying device is connected to the first glove box shell, and one end of the second glove box shell is connected to the box shell.

[0018] The first glove box also includes a first pallet conveying device; the first pallet conveying device is arranged in the first glove box shell; the conveyor belt extends into the first glove box shell; the discharge box includes a discharge box shell, a second pallet conveying device and a discharge door; the discharge box is fixedly connected to the first glove box through a third isolation valve, the third isolation valve is arranged between the first glove box shell and the discharge box shell, the discharge door is arranged at one end of the discharge box shell, and the second pallet conveying device is arranged in the discharge box shell; gloves are arranged on the first glove box shell; when the conveyor belt is reversed, the pressed billets on the conveyor belt are automatically conveyed to the first glove box shell; the operator uses the gloves to pack the pressed billets on the conveyor belt in the first glove box shell and then put them into the discharge pallet on the first pallet conveying device; open the third isolation valve, and the discharge pallet can move between the first pallet conveying device and the second pallet conveying device. The automatic magnetic field forming system also includes a feed box; the second glove box also includes a third tray conveyor; the feed box includes a feed box shell, a fourth tray conveyor and a feed door; the conveyor belt extends into the second glove box shell; the feed box is fixedly connected to the second glove box through a fourth isolation valve, the fourth isolation valve is arranged between the second glove box shell and the feed box shell, the feed door is arranged at one end of the feed box shell, and the fourth tray conveyor is arranged in the feed box shell; gloves are also arranged on the second glove box shell, and the operator uses the gloves to remove the packaging of the pressed blanks in the feed tray on the third tray conveyor and put them on the conveyor belt, and the pressed blanks are sent to the box shell through the conveyor belt; open the fourth isolation valve, and the feed tray can move between the third tray conveyor and the fourth tray conveyor.

[0019] The press frame and the powder box are both movable; when the magnetic field press needs to be maintained, the press frame can be disconnected from the green compact conveying device, and then the press frame and the powder box move away from the green compact conveying device; when the magnetic field press needs to be restored to work after maintenance, the press frame and the powder box move toward the green compact conveying device and restore the connection between the press frame and the green compact conveying device. The movement mode of the press frame and the powder box is selected from at least one of wheeled movement and slide rail movement.

[0020] The interface where the magnetic field press and the blank conveying device are connected is provided with a press isolation door that isolates the magnetic field press and the blank conveying device, and the press isolation door is arranged in the blank conveying device; when the magnetic field press needs to release the connection with the blank conveying device, the press isolation door is closed, the magnetic field press is removed, the blank conveying device is kept isolated from the atmosphere and sealed without air leakage, and the blank conveying device, the box box and the magnetic field press in working state continue to form a closed space isolated from the atmosphere. The maintenance of the automatic magnetic field press includes replacing molds, overhauling and other work. During the operation of the magnetic field press, a small amount of alloy powder will be attached to the press frame and the powder box. This part of the alloy powder needs to be cleaned regularly to avoid exposure to the atmosphere when it accumulates to a certain extent and causes combustion accidents. The blank conveying device serves as a common conveying channel for the blanks in the automatic magnetic field forming system, and conveys the blanks pressed by each magnetic field press to the box box. Even if a magnetic field press is undergoing maintenance or is restored to working order after maintenance, the airtightness of the billet conveying device will not be affected. It can still be used as a common conveying channel to provide automatic conveying of billets for other magnetic field presses, ensuring that the automatic magnetic field forming system and the rare earth permanent magnet production line including the automatic magnetic field forming system can still operate normally.

[0021] In a preferred embodiment, the automatic magnetic field forming system further includes a switch, by which the conveying direction of the conveyor belt can be switched, and the green compacts pressed by each magnetic field press are conveyed to the first glove box, and the green compacts are conveyed to the discharge box via the first glove box. The green compacts leave the discharge box to undergo the first process, and the green compacts after the first process are conveyed to the second glove box; the green compacts enter the boxing box via the second glove box and are loaded into the sintering material box. The first process includes but is not limited to the isostatic pressing process.

[0022] In a preferred embodiment, the conveying box is automatically moved to the opposite side of the vacuum sintering furnace after being separated from the box packing box, and docked with the vacuum sintering furnace to convey the sintering box containing the compacts in the conveying box to the vacuum sintering furnace for vacuum sintering.

[0023] Although some forms of automatic press systems have appeared in the industry, connecting multiple presses in series through channels, a robotic arm is set in each press to take materials and pack them into boxes, and then multiple carts are used to transfer the boxes in the channels. A large number of robotic arms and carts are used, and the structure and actions are complicated and cumbersome. In addition, the boxing action in each press will also result in each press being equipped with a set of complex empty material box conveying devices, and performing cumbersome empty material box conveying actions at the same time. The above design not only increases the cost investment of system equipment, but more importantly, it reduces the operating efficiency of the entire system, increases the failure rate, affects production efficiency, and has poor practicality. In the present invention, after the magnetic field press presses the rare earth alloy powder into a green compact, it is directly transferred to a conveyor belt arranged in a green compact conveying device, and the green compacts are gathered into a unified box through the conveyor belt. The green compact conveying device serves as a common transmission channel for the magnetic field press, and transfers the green compacts pressed by each magnetic field press to the box, and only one set of material picking mechanism is provided in the box, and the material picking mechanism grabs the green compacts and puts them into a sintering material box placed in the box, and then through the docking of the conveying material box and the box, through the reciprocating movement of the material box moving device of the box, and the lifting of the material box lifting device in the conveying material box, and in coordination with the action of the material picking mechanism, the process of automatically loading the green compacts into the sintering material box and automatically stacking the sintering material boxes is completed. Moreover, in this process, empty material boxes are transported to the box, green compacts are loaded into the material boxes, and the material boxes are stacked at the same time. Not only is the device structure simple and reliable, the equipment volume is compressed, and the equipment cost is reduced, but more importantly, the overall operation efficiency of the system is improved, the equipment failure rate is reduced, which is conducive to the smooth operation of the entire system, improves production efficiency, and has strong practicality.

[0024] In some forms of press systems, the end is directly connected to the vacuum sintering furnace through a plug valve. Although the function of sending the material box containing the pressed green sheets into the vacuum sintering furnace is also realized, there are major problems with this fixed connection with the vacuum sintering furnace: the vacuum sintering process of a general vacuum sintering furnace is relatively long, which is much longer than the speed beat of multiple presses providing pressed green sheets. This causes the press system to stop after providing a furnace of pressed green sheets and wait for the fixedly docked vacuum sintering furnace to complete the vacuum sintering process, which runs counter to the original design of the press system composed of multiple presses, making the system lose its original meaning. In addition, some press equipment transfers materials to a mobile conveying device, but the mobile conveying device cannot be directly docked with the vacuum sintering furnace. Instead, the mobile conveying device first transfers the materials to a transitional glove box, and then the glove box transfers the materials to the vacuum sintering furnace, which does not have true process continuity. In the press system composed of a compact conveying device, a box packing box and multiple magnetic field presses in the present invention, the box packing box at the end of the system is freely docked with a movable conveying material box, and then a conveying material box is freely docked with multiple vacuum sintering furnaces. This design allows the process rhythm of the press and the vacuum sintering furnace to be flexibly adapted, and the rare earth permanent magnet production can be flexibly arranged, thereby improving the working efficiency of the entire rare earth permanent magnet production line.

[0025] In a more preferred embodiment of the present invention, the conveying material box also includes a material bed; there are multiple sintering material boxes in the conveying material box, which are arranged in n layers up and down and placed on the material bed, and n ≥ 3. The coordinated actions of the aforementioned material box moving device and the material box clamping and lifting device include: after the box loading box is docked with the conveying material box, the material box clamping and lifting device lifts all n layers of empty sintering material boxes from the material bed, and the material box moving device moves horizontally from the box loading box to the conveying material box. Then, the material box clamping and lifting device puts n layers of empty sintering material boxes onto the material box moving device, and then the material box clamping and lifting device lifts (n-1) layers of empty sintering material boxes, and the material box moving device moves the remaining 1 layer of empty sintering material boxes from the conveying material box to the box loading box. Then, the material box moving device performs lifting and lowering to load the green sheets into the sintering material boxes in the box loading box. Then, the material box moving device moves the sintering material boxes containing the green sheets horizontally to the conveying material bed. The material box is in the box, and then, the material box clamping and lifting device lowers the (n-1) layer of empty sintering material boxes to the top of the layer of sintering material boxes on the material box moving device, and then the material box clamping and lifting device lifts the (n-2) layer of empty sintering material boxes, and the material box moving device moves the 2 layers of sintering material boxes including 1 layer of empty sintering material boxes from the conveying material box to the box loading box, and the compacts are loaded into the empty sintering material boxes in the box loading box, and so on, until n layers of empty sintering material boxes are loaded with compacts in the box loading box and then moved to the conveying material box, and then the material box clamping and lifting device lifts the n layers of sintering material boxes loaded with compacts from the material box moving device, the material box moving device returns to the box loading box, and the material box clamping and lifting device lowers the n layers of sintering material boxes onto the material bed.

[0026] The magnetic field press of the present invention comprises a material storage device, a powder loading box, a press frame, an upper pressure head assembly, a lower pressure head assembly, a mold device, an oriented magnetic pole and a transfer mechanism; the material storage device is arranged above the powder loading box; a powder loading device is arranged in the powder loading box, and the powder loading device automatically loads the rare earth permanent magnetic alloy powder in the material storage device into the mold cavity of the mold device in a quantitative manner; the upper pressure head assembly, the mold device, the lower pressure head assembly, the oriented magnetic pole and the oriented coil are arranged in the press frame; the upper pressure head assembly and the lower pressure head assembly are respectively arranged above and below the mold device; the oriented magnetic pole There are two poles, distributed on both sides of the mold device; the mold device, the upper pressure head assembly, the lower pressure head assembly, and the oriented magnetic poles realize bidirectional pressing of the alloy powder in the mold cavity under magnetic field orientation, and press the alloy powder into a compact; after the alloy powder is oriented by the magnetic field and pressed into a compact, the upper pressure head assembly and the lower pressure head assembly are moved to eject the compact from the mold cavity, and the compact is transferred to the conveyor belt in the conveyor housing by the transfer mechanism; one side of the press frame is connected to the powder box, and the other side is provided with an interface, which can be connected to the compact conveyor through the interface. The working process of the magnetic field press is completed under gas protection.

[0027] An electronic scale component is also provided in the powder loading box; the powder loading device is arranged below the electronic scale component; the alloy powder is weighed according to the set weight by the electronic scale component and then enters the powder loading device.

[0028] The present invention also provides an automatic magnetic field forming method, which is implemented by using the above-mentioned automatic magnetic field forming system; first, the rare earth permanent magnet alloy powder is quantitatively loaded into the mold cavity of the magnetic field press under a protective atmosphere, and after being oriented by the magnetic field and bidirectionally pressed into a compact, the compact is ejected from the mold cavity and automatically placed on a conveyor belt in a compact conveying device; the conveyor belt can rotate forward or reverse; When the conveyor belt rotates forward: (1) Connect the box loading box and the conveying box, open the first isolation valve and the second isolation valve; the box moving device moves to the conveying box, moves the sintering box to the box loading box and adjusts the sintering box to the set height; (2) The green compact is transferred to the box, and the green compact is grabbed and placed in the sintering box on the box moving device; after the sintering box is full, the box moving device is moved to the transfer box to move the sintering box into the box, and the sintering box is adjusted to a set height; the operation of grabbing the green compact and placing it in the sintering box on the box moving device is repeated; (3) The material box moving device moves the multi-layer sintering material box containing the compact into the conveying material box, the material box clamping lifting device removes the multi-layer sintering material box from the material box moving device, and the material box moving device returns to the box loading box; the first isolation valve and the second isolation valve are closed, and the conveying material box is separated from the box loading box; When the conveyor belt is reversed: (4) Automatically conveying the green compacts on the conveyor belt to the first glove box shell; the operator uses gloves to pack the green compacts on the conveyor belt in the first glove box shell and then places them on the discharge tray on the first tray conveyor device; (5) Open the third isolation valve, move the discharge tray containing the pressed green sheets from the first tray conveyor to the second tray conveyor in the discharge box, close the third isolation valve and open the discharge door, move the discharge tray containing the pressed green sheets out of the second tray conveyor, and then place the empty discharge tray on the second tray conveyor; (6) After closing the discharge door, open the third isolation valve, transfer the empty discharge pallet on the second pallet conveyor to the first pallet conveyor, and close the third isolation valve; then repeat the operations (4) to (6).

[0029] When the conveyor belt is reversed, it also includes: (7) Place the isostatically pressed green sheets with packaging on the feed tray on the fourth tray conveyor in the feed box, close the feed door and open the fourth isolation valve, transfer the feed tray to the third tray conveyor, and close the fourth isolation valve; (8) In the second glove box, the operator uses gloves to remove the packaging of the green sheets in the feed tray of the third tray conveyor and place them on the conveyor belt. The green sheets are then sent to the shell of the box through the conveyor belt. Then, operations (1) to (3) are performed to complete the operation of boxing the green sheets in the box and the operation of sending the multi-layer sintered material box into the conveying material box.

[0030] A robot and a visual system are arranged in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compact on the conveyor belt through the visual system and automatically puts the compact into the set position of the set sintering material box.

[0031] Gloves are provided on the shell of the box, and the operator can put the compacts on the conveyor belt into the sintering material box through the gloves.

[0032] By using the automatic magnetic field forming system of the present invention, in the process of rare earth permanent magnet material, the process of forming the rare earth permanent magnet alloy powder into a compact by magnetic field and loading the compact into a vacuum sintering furnace is automatically completed under nitrogen protection or vacuum conditions, so that the rare earth permanent magnet raw material that is very easy to oxidize is always effectively isolated from the atmospheric environment, which is conducive to reducing the oxygen content in the material and further improving the performance of the rare earth permanent magnet material; in addition, the material preparation, placing and packing, stacking and loading the furnace, and the transportation of materials between the magnetic field forming and vacuum sintering processes in this process are completely completed in an automated form, which not only improves production efficiency, saves human resources, and reduces production costs, but also eliminates the uncertainty of manual operation, reduces the defective rate of products, overcomes the inherent technical difficulties in the industry, and improves the stability of product quality. Under the same raw material composition and the same manufacturing process parameters, the oxygen content in the rare earth permanent magnet material manufactured by the technical solution of the present invention is reduced by about 200ppm, and the defective rate of products caused in the process is reduced by about 30%.

[0033] The present invention is a part of a rare earth permanent magnet intelligent production line and an intelligent production method of rare earth permanent magnet materials, which mainly solves the following problems: 1. The difficulty in producing rare earth permanent magnets, especially NdFeB rare earth permanent magnets, is that rare earth permanent magnet alloys are very easy to oxidize, the powder size is fine, the powder cannot be granulated, and the magnetic field is difficult to shape. The equipment of this application has good sealing performance, and the oxygen content in the production process is less than 500ppm, which reduces the oxidation of fine powder and significantly improves the magnetic properties. The oxygen content in the production process of the equipment of this application is as low as less than 100ppm.

[0034] 2. When isostatic pressing is cancelled in the prior art, the average particle size of the powder is generally higher than 3.5 μm. In this application, when the average particle size of the powder is lower than 3 μm, the magnetic field press also has good magnetic field formability, which is suitable for mass production.

[0035] 3. The powder loading device in the powder loading box of the present invention evenly loads the powder into the mold and forms it according to the set process curve. Under the condition of canceling isostatic pressing, the density of the pressed green body is 4.1-4.8g / cm 3 .

[0036] 4. The blank conveying device of the present invention changes the practice of the prior art. After the blank is taken out of the mold, it is directly placed on the conveyor belt in the blank conveying device. One conveyor belt connects multiple magnetic field presses, and the blanks are conveyed to the same box for boxing. The blanks are boxed in the same box, which has a simple structure, convenient operation, low equipment cost and strong practicality.

[0037] 5. The box of the present invention includes a box shell, a material box moving device, and a material picking mechanism; the material picking mechanism includes a manipulator, which is inverted on the upper part of the box, and the manipulator is also equipped with a visual system; the pressed blanks are transferred to the box, and the manipulator determines when to grab the pressed blanks and where to put them.

[0038] 6. In order to adapt to the production of existing technologies and improve product performance, the production line equipment of the present invention is designed with a first glove box and a second glove box in the production line to adapt to isostatic pressing operations. When the conveyor belt is reversed, the green compact is directly transferred to the first glove box. After the green compact is packaged in the first glove box, the third isolation valve is opened to transfer the green compact to the discharge box. After the third isolation valve is closed, the green compact is taken out for isostatic pressing. After isostatic pressing, the green compact is placed in the feed box, and the fourth isolation valve is opened to transfer the green compact to the second glove box. In the second glove box, the green compact is unpacked and placed on the reversed conveyor belt, and then transferred to the boxing box to complete the same operation of loading into the sintering material box. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of an implementation mode of the magnetic field press involved in the present invention.

[0040] Figure 2 It is a schematic diagram of the top structural layout of an embodiment of the automatic magnetic field forming system of the present invention.

[0041] Figure 3 It is a schematic diagram of the top structural layout of another embodiment of the automatic magnetic field forming system of the present invention. DETAILED DESCRIPTION

[0042] like Figure 1 As shown, in one embodiment, the magnetic field press 1 involved in the present invention includes a storage device 2, a powder box 3, a press frame 4, an upper press head assembly 5, a lower press head assembly 6, a mold device 7 and an orientation magnetic pole 8; the storage device 2 is arranged above the powder box 3; a powder loading device 9 is arranged in the powder box 3, and the powder loading device 9 automatically loads the alloy powder in the storage device 2 into the mold cavity of the mold device 7 in a quantitative manner; the upper press head assembly 5, the mold device 7, the lower press head assembly 6, and the orientation magnetic pole 8 are arranged in the press frame 4; the upper press head assembly 5 and the lower press head assembly 6 are respectively arranged above and below the mold device 7; there are two orientation magnetic poles 8, which are distributed on both sides of the mold device 7.

[0043] An orientation coil is also arranged in the press frame, and the orientation coil is sleeved on the outer side of the orientation magnetic pole.

[0044] The mold device, the upper pressing head assembly, the lower pressing head assembly, and the orientation magnetic pole together realize bidirectional pressing of the alloy powder in the mold cavity under magnetic field orientation, pressing the alloy powder into a compact, and then moving the upper pressing head assembly and the lower pressing head assembly to eject the compact from the mold cavity. The magnetic field press also includes a transfer mechanism, which transfers the pressed compact to a conveyor belt in the conveyor housing.

[0045] One side of the press frame 4 is connected to the powder box 3 , and the other side is provided with an interface. When the magnetic field press 1 is in working state, it can be connected to the compact conveying device 10 through the interface located on the other side of the press frame 4 .

[0046] Both the press frame and the powder box are movable; when the magnetic field press needs maintenance, the press frame can be disconnected from the green compact conveying device, and then the press frame and the powder box are moved away from the green compact conveying device; when the magnetic field press needs to be restored to working condition after maintenance, the press frame and the powder box are moved toward the green compact conveying device, and the connection between the press frame and the green compact conveying device is restored. The movement mode of the press frame and the powder box is selected from at least one of wheeled movement and slide rail movement. Figure 1 In the implementation manner, the press frame and the lower part of the powder box are both provided with wheels, and movement can be achieved by the wheels.

[0047] In one embodiment of the automatic magnetic field shaping system of the present invention, Figure 2 As shown, the automatic magnetic field forming system includes a blank conveying device 10, a box 11 and the above-mentioned magnetic field press 1; there are multiple magnetic field presses 1, all connected to the blank conveying device 10 in parallel; the end of the blank conveying device 10 is connected to the box 11.

[0048] The green compact conveying device is used as a conveying channel of the automatic magnetic field forming system to convey the green compacts pressed by each magnetic field press to the box. The green compact conveying device, the box and the magnetic field press in working state form a closed space filled with protective gas.

[0049] The box loading box 11 comprises a material box moving device and a first isolation valve 12, and the first isolation valve 12 is arranged at one end of the box loading box 11. In the box loading box 11, the compact is loaded into a sintering material box 13 on the material box moving device.

[0050] In one embodiment, the box further comprises a material taking mechanism; the material taking mechanism is arranged in the box shell, and the material taking mechanism grabs the compacts on the conveyor belt and puts them into the sintering box on the box moving device.

[0051] In another embodiment, a material taking mechanism and a visual system are provided in the box; the visual system automatically finds the compact, guides the material taking mechanism to grab the compact and automatically places the compact into a set position of the sintering material box.

[0052] In a preferred embodiment, a robot and a visual system are provided in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compact on the conveyor belt through the visual system and automatically places the compact into a set position of the set sintering material box.

[0053] A sensor for detecting whether there is a green sheet at the location is arranged near the interface where the magnetic field press is connected to the green sheet conveying device. The sensor is used to control the green sheets pressed by different magnetic field presses to prevent collision.

[0054] like Figure 1 and Figure 2 As shown, a conveyor belt 14 is provided in the blank conveying device 10, and the conveyor belt 14 extends through the interface into the box 11; after the blank is ejected from the mold cavity, it moves to the conveyor belt 14 in the blank conveying device, and is conveyed to the box 11 through the conveyor belt 14.

[0055] In a more preferred embodiment, the automatic magnetic field forming system includes more than 4 magnetic field presses.

[0056] A movable conveying box 15 is also provided on the outside of the automatic magnetic field forming system, and the conveying box 15 is filled with protective gas; the box packing box 11 can be automatically docked with the conveying box 15 provided with the second isolation valve 16 through the first isolation valve 12; after the box packing box 11 and the conveying box 15 are automatically docked, the empty sintering box is moved from the conveying box 15 to the box packing box 11, and at the same time, the sintering box containing the pressed blank is moved from the box packing box 11 to the conveying box 15; after the box packing box 11 and the conveying box 15 are docked, the first isolation valve 12 and the second isolation valve 16 need to be opened.

[0057] When the sintering box containing the compacts is moved from the packing box to the conveying box, the conveying box is automatically separated from the packing box, and then the conveying box is automatically moved away from the automatic magnetic field forming system; before the packing box and the conveying box are separated, the first isolation valve and the second isolation valve are closed first to ensure that the packing box and the conveying box are sealed and leak-proof; when the conveying box contains an empty sintering box, the conveying box is automatically moved to the opposite side of the packing box and automatically docked with the packing box. After docking, the empty sintering box is moved from the conveying box to the packing box to load the compacts.

[0058] The box packing box comprises a box packing box shell; one end of the box packing box shell is connected to the first isolation valve, and the other end is connected to the blank conveying device; the material box moving device is arranged in the box packing box shell; the blanks conveyed into the box packing box shell are loaded into the sintering material box placed on the material box moving device; after the box packing box and the conveying material box are docked, the material box moving device can move back and forth between the box packing box and the conveying material box.

[0059] The material box moving device can move horizontally or vertically, and is provided with a position sensor for indicating and controlling the position of the material box moving device.

[0060] The conveying material box includes a material box clamping and lifting device; after the box loading box and the conveying material box are docked, the reciprocating movement of the material box moving device and the lifting and lowering of the material box clamping and lifting device, combined with the action of the material taking mechanism, jointly complete the process of automatically loading the compacts into the sintering material box and automatically stacking the sintering material boxes.

[0061] In a preferred embodiment, after the conveying box is separated from the box packing box, it automatically moves to the opposite side of the vacuum sintering furnace and docks with the vacuum sintering furnace to convey the sintering box containing the compacts in the conveying box to the vacuum sintering furnace for vacuum sintering.

[0062] like Figure 1 As shown in FIG. 1 , a press isolation door 17 is provided at the interface of the green compact conveying device 10 connected to the magnetic field press 1 .

[0063] When the magnetic field press is disconnected from the blank conveying device, the press isolation door needs to be closed first to make the blank conveying device airtight and keep the protective gas atmosphere in the enclosed space composed of the blank conveying device, the box and the magnetic field press in working state unchanged. The maintenance of the automatic magnetic field press includes mold replacement, overhaul and other work.

[0064] The green compact conveying device is used as a common conveying channel for green compacts in the automatic magnetic field forming system, and conveys the green compacts pressed by each magnetic field press into the box. Even if a magnetic field press is undergoing maintenance or is restored to work after maintenance, the airtightness of the green compact conveying device is not affected, and it can still be used as a common conveying channel to provide automatic conveying of green compacts for other magnetic field presses, ensuring that the automatic magnetic field forming system and the rare earth permanent magnet production line including the automatic magnetic field forming system can still operate normally.

[0065] In a more preferred embodiment of the present invention, the conveying material box also includes a material bed; there are multiple sintering material boxes in the conveying material box, which are arranged in n layers up and down and placed on the material bed, and n ≥ 3. The aforementioned process of automatically loading the green sheets into the sintering material boxes and automatically stacking the sintering material boxes includes: after the box loading box is docked with the conveying material box, the material box clamping and lifting device lifts all n layers of empty sintering material boxes from the material bed, and the material box moving device moves horizontally from the box loading box to the conveying material box, and then, the material box clamping and lifting device puts n layers of empty sintering material boxes onto the material box moving device, and then the material box clamping and lifting device lifts (n-1) layers of empty sintering material boxes, and the material box moving device moves the remaining 1 layer of empty sintering material boxes from the conveying material box to the box loading box, and then, the material box moving device is lifted and lowered to load the green sheets into the sintering material boxes in the box loading box, and then, the material box moving device moves the sintering material boxes containing the green sheets horizontally to the conveying material box. In the feeding box, then, the box clamping and lifting device lowers the (n-1) layer of empty sintering boxes to the top of the sintering boxes on the box moving device, and then the box clamping and lifting device lifts the (n-2) layer of empty sintering boxes, and the box moving device moves the 2 layers of sintering boxes including 1 layer of empty sintering boxes from the conveying box to the box loading box, and the compacts are loaded into the empty sintering boxes in the box loading box, and so on, until n layers of empty sintering boxes are loaded with compacts in the box loading box and then moved to the conveying box, and then the box clamping and lifting device lifts the n layers of sintering boxes with compacts from the box moving device, the box moving device returns to the box loading box, and the box clamping and lifting device lowers the n layers of sintering boxes onto the material bed.

[0066] In such Figure 3 In another embodiment of the present invention shown, the automatic magnetic field forming system also includes a first glove box 18, a third isolation valve 21, a fourth isolation valve 22, a second glove box 19 and a discharge box 20; the first glove box 18 includes a first glove box shell, and the second glove box 19 includes a second glove box shell; one end of the billet conveying device 10 is connected to the box loading box 11, and the other end of the billet conveying device 10 is connected to the first glove box 18, and one side of the box loading box 11 is connected to the second glove box 19.

[0067] The first glove box 18 also includes a first tray conveyor; the conveyor belt extends into the first glove box shell. The discharge box 20 includes a discharge box shell, a second tray conveyor and a discharge door 23. The discharge box 20 is fixedly connected to the first glove box 18 through a third isolation valve 21, and the third isolation valve 21 is arranged between the first glove box shell and the discharge box shell. The discharge door 23 is arranged at one end of the discharge box shell, and the second tray conveyor is arranged in the discharge box shell. Gloves are arranged on the first glove box shell; when the conveyor belt is reversed, the pressed blanks on the conveyor belt are automatically conveyed to the first glove box shell; the operator uses the gloves to pack the pressed blanks on the conveyor belt in the first glove box shell and then puts them into the discharge tray on the first tray conveyor; the third isolation valve is opened, and the discharge tray can move between the first tray conveyor and the second tray conveyor.

[0068] The automatic magnetic field forming system also includes a feed box 24. The second glove box 19 also includes a third tray conveyor; the feed box 24 includes a feed box shell, a fourth tray conveyor and a feed door 25. The conveyor belt extends into the second glove box shell. The feed box 24 is fixedly connected to the second glove box 19 through a fourth isolation valve 22, the fourth isolation valve 22 is arranged between the second glove box shell and the feed box shell, the feed door 25 is arranged at one end of the feed box shell, and the fourth tray conveyor is arranged in the feed box shell. Gloves are also arranged on the second glove box shell. The operator uses the gloves to remove the packaging of the blanks in the feed tray on the third tray conveyor and put them on the conveyor belt. The blanks are sent to the box shell through the conveyor belt; open the fourth isolation valve, and the feed tray can move between the third tray conveyor and the fourth tray conveyor.

[0069] When the conveyor belt is reversed, the green compacts pressed by each magnetic field press 1 are conveyed to the first glove box 18, and the green compacts are conveyed to the discharge box 20 through the first glove box 18, and then the green compacts are moved out of the discharge box 20 by means of a moving means for the first process. After the first process is completed, the green compacts are moved into the feed box 24 by means of a moving means, and then the green compacts are moved from the feed box 24 to the second glove box 19. The operator puts the green compacts on the conveyor belt with gloves, and the green compacts are sent to the box 11 through the conveyor belt; in the box 11, the material taking mechanism grabs the green compacts and puts them into the sintering box 13 on the box moving device. The first process includes but is not limited to the isostatic pressing process.

[0070] The automatic magnetic field forming method of the present invention is implemented by using the automatic magnetic field forming system described above. First, the rare earth permanent magnet alloy powder is quantitatively loaded into the mold cavity of the magnetic field press under a protective atmosphere. After being oriented by the magnetic field and pressed into a compact in both directions, the compact is ejected from the mold cavity and automatically placed on a conveyor belt in a compact conveying device. The conveyor belt can rotate forward or reverse. When the conveyor belt rotates forward: (1) Connect the box loading box and the conveying box, open the first isolation valve and the second isolation valve; the box moving device moves to the conveying box, moves the sintering box to the box loading box and adjusts the sintering box to the set height; (2) The green compact is transferred to the box, and the green compact is grabbed and placed in the sintering box on the box moving device; after the sintering box is full, the box moving device is moved to the transfer box to move the sintering box into the box, and the sintering box is adjusted to a set height; the operation of grabbing the green compact and placing it in the sintering box on the box moving device is repeated; (3) The material box moving device moves the multi-layer sintering material box containing the compact into the conveying material box, the material box clamping lifting device removes the multi-layer sintering material box from the material box moving device, and the material box moving device returns to the box loading box; the first isolation valve and the second isolation valve are closed, and the conveying material box is separated from the box loading box; When the conveyor belt is reversed: (4) Automatically conveying the green compacts on the conveyor belt to the first glove box shell; the operator uses gloves to pack the green compacts on the conveyor belt in the first glove box shell and then places them on the discharge tray on the first tray conveyor device; (5) Open the third isolation valve, move the discharge tray containing the pressed green sheets from the first tray conveyor to the second tray conveyor in the discharge box, close the third isolation valve and open the discharge door, move the discharge tray containing the pressed green sheets out of the second tray conveyor, and then place the empty discharge tray on the second tray conveyor; (6) After closing the discharge door, open the third isolation valve, transfer the empty discharge pallet on the second pallet conveyor to the first pallet conveyor, and close the third isolation valve; then repeat the operations (4) to (6).

[0071] When the conveyor belt is reversed, it also includes: (7) Place the isostatically pressed green sheets with packaging on the feed tray on the fourth tray conveyor in the feed box, close the feed door and open the fourth isolation valve, transfer the feed tray to the third tray conveyor, and close the fourth isolation valve; (8) In the second glove box, the operator uses gloves to remove the packaging of the green sheets in the feed tray of the third tray conveyor and place them on the conveyor belt. The green sheets are then sent to the shell of the box through the conveyor belt. Then, operations (1) to (3) are performed to complete the operation of boxing the green sheets in the box and the operation of sending the multi-layer sintered material box into the conveying material box.

[0072] A robot and a visual system are arranged in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compact on the conveyor belt through the visual system and automatically puts the compact into the set position of the set sintering material box.

[0073] Gloves are provided on the shell of the box, and the operator can put the compacts on the conveyor belt into the sintering material box through the gloves.

Claims

1. An automatic magnetic field shaping system, characterized in that: It includes a blank conveying device, a box packing box, a magnetic field press, a first glove box, a third isolation valve and a discharge box; the blank conveying device includes a conveying device shell and a conveyor belt; the conveyor belt is arranged in the conveying device shell; there are multiple magnetic field presses, which are connected to the conveying device shell side by side; one end of the blank conveying device is connected to the box packing box; the blank conveying device, the box packing box and the magnetic field press in a working state constitute a space isolated from the atmosphere, which is filled with protective gas; the blanks pressed by the magnetic field press are automatically transferred to the conveyor belt in the conveying device shell; the box packing box includes a box packing box shell, a material box moving device and a first isolation valve; the material box moving device is arranged in the box packing box shell, and the conveyor belt of the blank conveying device extends into the box packing box; when the conveyor belt rotates forward, the conveyor belt transfers the blanks on the conveyor belt to the box packing box shell; in the box packing box, the blanks are loaded into the sintering material box on the material box moving device; the first The isolation valve is connected to the box shell; the first glove box includes a first glove box shell and a first tray conveyor; the first tray conveyor is arranged in the first glove box shell; the discharge box includes a discharge box shell, a discharge door and a second tray conveyor; the other end of the blank conveyor is connected to the first glove box shell; the third isolation valve is arranged between the first glove box shell and the discharge box shell, the discharge door is arranged at one end of the discharge box shell, and the second tray conveyor is arranged in the discharge box shell; gloves are arranged on the first glove box shell; when the conveyor belt is reversed, the blanks on the conveyor belt are conveyed to the first glove box shell; the operator uses the gloves to pack the blanks on the conveyor belt in the first glove box shell and then put them into the discharge tray on the first tray conveyor; open the third isolation valve, and the discharge tray can move between the first tray conveyor and the second tray conveyor.

2. The automatic magnetic field shaping system according to claim 1, characterized in that: The magnetic field press comprises a powder loading box, a press frame, an upper press head assembly, a lower press head assembly, a mold device, an orientation magnetic pole and a transfer mechanism; a powder loading device is arranged in the powder loading box, and the powder loading device automatically loads the rare earth permanent magnet alloy powder into the mold cavity of the mold device in a quantitative manner; the upper press head assembly, the mold device, the lower press head assembly and the orientation magnetic pole are arranged in the press frame; the upper press head assembly and the lower press head assembly are arranged above and below the mold device respectively; there are two orientation magnetic poles, which are distributed on both sides of the mold device; after the alloy powder is oriented in the magnetic field and pressed into a compact, the upper press head assembly and the lower press head assembly are moved to eject the compact from the mold cavity, and the compact is transferred to the conveyor belt in the conveyor housing by the transfer mechanism; one side of the press frame is connected to the powder loading box, and the other side is provided with an interface, which can be connected to the compact conveying device through the interface.

3. The automatic magnetic field shaping system according to claim 1, characterized in that: The conveyor housing is fixed and the magnetic field press can move relative to the conveyor housing.

4. The automatic magnetic field shaping system according to claim 1, characterized in that: The automatic magnetic field forming system also includes a feed box, a fourth isolation valve and a second glove box; the second glove box includes a second glove box shell and a third tray conveyor; one end of the second glove box shell is connected to a box shell; the feed box includes a feed box shell, a fourth tray conveyor and a feed door; the fourth isolation valve is arranged between the second glove box shell and the feed box shell, the feed door is arranged at one end of the feed box shell, and the fourth tray conveyor is arranged in the feed box shell; the conveyor belt extends into the second glove box shell; gloves are also arranged on the second glove box shell, and the operator uses the gloves to remove the packaging of the pressed blanks in the feed tray on the third tray conveyor and put them on the conveyor belt, and the pressed blanks are sent to the box shell through the conveyor belt; open the fourth isolation valve, and the feed tray can move between the third tray conveyor and the fourth tray conveyor.

5. The automatic magnetic field shaping system according to claim 1, characterized in that: The box also includes a material taking mechanism; the material taking mechanism is arranged in the box shell, and the material taking mechanism grabs the compacts on the conveyor belt and puts them into the sintering box on the box moving device.

6. The automatic magnetic field shaping system according to claim 1, characterized in that: A material taking mechanism and a visual system are arranged in the box; the visual system automatically finds the compact, guides the material taking mechanism to grab the compact and automatically places the compact into the set position of the sintering material box.

7. The automatic magnetic field shaping system according to claim 1, characterized in that: A robot and a visual system are arranged in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compacts on the conveyor belt through the visual system and automatically puts the compacts into the set position of the set sintering material box.

8. The automatic magnetic field shaping system according to claim 1, characterized in that: Gloves are provided on the shell of the box, and the operator can put the compacts on the conveyor belt into the sintering material box through the gloves.

9. The automatic magnetic field shaping system according to claim 1, characterized in that: A press isolation door is arranged at the interface where the magnetic field press and the blank conveying device are connected, and the press isolation door is arranged inside the blank conveying device; the press isolation door is closed, the magnetic field press is removed, and the blank conveying device is kept isolated from the atmosphere.

10. The automatic magnetic field shaping system according to claim 1, characterized in that: A sensor for detecting whether there is a green sheet at the location is arranged near the interface where the magnetic field press is connected to the green sheet conveying device. The sensor is used to control the green sheets pressed by different magnetic field presses to prevent collision.

11. The automatic magnetic field shaping system according to claim 1, characterized in that: The automatic magnetic field forming system includes more than 4 magnetic field presses.

12. The automatic magnetic field shaping system according to claim 1, characterized in that: The material box moving device can move horizontally and vertically; the material box moving device is provided with a position sensor for indicating and controlling the position of the material box moving device.

13. The automatic magnetic field shaping system according to claim 1, characterized in that: The automatic magnetic field forming system also includes a conveying material box; the conveying material box includes a conveying material box shell, a material box clamping and lifting device and a second isolation valve; the second isolation valve is connected to the conveying material box shell, and the material box clamping and lifting device is arranged in the conveying material box shell; the conveying material box can be moved to the opposite side of the box loading box and dock with the box loading box, or be released from the box loading box and moved away from the box loading box; after the conveying material box is docked with the box loading box, the first isolation valve and the second isolation valve are opened, the box loading box and the conveying material box constitute a space isolated from the atmosphere, the material box moving device can be moved into the conveying material box, and through the coordinated action of the material box moving device and the material box clamping and lifting device, the multi-layer sintering material boxes on the material box clamping and lifting device can be moved in layers to the material box moving device, or the multi-layer sintering material boxes can be stacked; before the conveying material box is released from the box loading box, the first isolation valve and the second isolation valve are closed, so that the conveying material box and the box loading box respectively constitute a space isolated from the atmosphere.

14. An automatic magnetic field forming method, characterized in that: The method is implemented by using an automatic magnetic field forming system as described in any one of claims 1 to 13; the automatic magnetic field forming system also includes a conveying material box, on which a second isolation valve is provided; firstly, the rare earth permanent magnet alloy powder is quantitatively loaded into the mold cavity of the magnetic field press under a protective atmosphere, and after being oriented by the magnetic field and pressed into a compact in both directions, the compact is ejected from the mold cavity and automatically placed on a conveyor belt in a compact conveying device; the conveyor belt can rotate forward or reverse; When the conveyor belt rotates forward: (1) Connect the box loading box and the conveying box, open the first isolation valve and the second isolation valve; the box moving device moves to the conveying box, moves the sintering box to the box loading box and adjusts the sintering box to the set height; (2) The green compact is transferred to the box, and the green compact is grabbed and placed in the sintering box on the box moving device. After the sintering box is full, the box moving device is moved to the transfer box to move the sintering box into the box, and the sintering box is adjusted to a set height. Repeat the operation of grabbing the compact and placing it into the sintering box on the box moving device; (3) The material box moving device moves the multi-layer sintering material box containing the compact into the conveying material box, the material box clamping lifting device removes the multi-layer sintering material box from the material box moving device, and the material box moving device returns to the box loading box; the first isolation valve and the second isolation valve are closed, and the conveying material box is separated from the box loading box; When the conveyor belt is reversed: (4) Automatically conveying the green compacts on the conveyor belt to the first glove box shell; the operator uses gloves to pack the green compacts on the conveyor belt in the first glove box shell and then places them on the discharge tray on the first tray conveyor device; (5) Open the third isolation valve, move the discharge tray containing the pressed green sheets from the first tray conveyor to the second tray conveyor in the discharge box, close the third isolation valve and open the discharge door, move the discharge tray containing the pressed green sheets out of the second tray conveyor, and then place the empty discharge tray on the second tray conveyor; (6) After closing the discharge door, open the third isolation valve, transfer the empty discharge pallet on the second pallet conveyor to the first pallet conveyor, and close the third isolation valve; then repeat the operations (4) to (6).

15. The automatic magnetic field forming method according to claim 14, characterized in that: The automatic magnetic field forming system also includes a feed box, a fourth isolation valve and a second glove box; the second glove box includes a second glove box shell and a third tray conveyor; one end of the second glove box shell is connected to the box housing; the feed box includes a feed box shell, a fourth tray conveyor and a feed door; the fourth isolation valve is arranged between the second glove box shell and the feed box shell, the feed door is arranged at one end of the feed box shell, and the fourth tray conveyor is arranged in the feed box shell; the conveyor belt extends into the second glove box shell; Gloves are also arranged on the second glove box housing; when the conveyor belt is reversed, it also includes: (7) Place the isostatically pressed green sheets with packaging on the feed tray on the fourth tray conveyor in the feed box, close the feed door and open the fourth isolation valve, transfer the feed tray to the third tray conveyor, and close the fourth isolation valve; (8) In the second glove box, the operator uses gloves to remove the packaging of the green sheets in the feed tray of the third tray conveyor and place them on the conveyor belt. The green sheets are then sent to the shell of the box through the conveyor belt. Then, operations (1) to (3) are performed to complete the operation of boxing the green sheets in the box and the operation of sending the multi-layer sintered material box into the conveying material box.

16. The automatic magnetic field forming method according to claim 14, characterized in that: A robot and a visual system are arranged in the box; the robot is hoisted above the conveyor belt; the robot automatically finds the compact on the conveyor belt through the visual system and automatically puts the compact into the set position of the set sintering material box.

17. The automatic magnetic field shaping method according to claim 14, characterized in that: Gloves are provided on the shell of the box, and the operator can put the compacts on the conveyor belt into the sintering material box through the gloves.

Images