Neodymium iron boron magnet cutting device and method of use

Abstract

The present application relates to the technical field of Nd-Fe-B magnet cutting, and particularly relates to a Nd-Fe-B magnet cutting device and a use method thereof. The device comprises a wire cutting machine, a lifting table slidingly connected to the inside of the wire cutting machine, a first lead screw motor symmetrically installed in the inside of the wire cutting machine and having a lead screw threadedly connected with the lifting table, a placing plate placed on the top of the lifting table, clamping plates symmetrically slidingly connected to the placing plate, and a lifting plate slidingly connected to a mounting frame of the wire cutting machine. The device can mechanically limit and compress the magnet raw material placed on the placing plate from six directions of up and down, front and back, and left and right through the cooperative action of the lifting plate, the pressing frame, the clamping plates, the first vertical plate and the second vertical plate. The multi-directional clamping method can effectively replace the traditional adhesive fixing method, completely avoid a series of cumbersome procedures such as gluing, curing and high-temperature degumming, significantly improve the production efficiency, reduce the energy consumption and production cost, and eliminate the glue pollution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of neodymium iron boron magnet cutting, and particularly to a neodymium iron boron magnet cutting device and a use method thereof. BACKGROUND

[0002] In the field of precision processing of neodymium iron boron magnetic materials, the cutting process is a key link for determining the size accuracy, surface quality and material utilization rate of the magnet. Due to the characteristics of high hardness, great brittleness and easy oxidation of neodymium iron boron material, the cutting process usually adopts a multi-knife slicer to cooperate with a cooling liquid for high-speed slicing operation. In such a processing process, in order to ensure the stability of the multiple magnets during cutting and prevent the vibration or impact of the cooling liquid caused by the high-speed operation of the cutter from causing the magnetic sheet to be reversed, slipped or deviated in position, the existing technology generally adopts a glue fixing method, that is, the neodymium iron boron magnet raw material to be cut is adhered to the surface of a special jig by gluing to realize batch fixing and positioning.

[0003] However, this process has many technical bottlenecks. First, the application of glue needs to ensure uniformity and strictly control the amount, too much glue can cause pollution, and too little glue can affect the fixing effect. This process highly depends on manual operation, which not only consumes time and effort, but also is difficult to guarantee consistency. Second, after gluing, the cutting process can only be started after the glue is preliminarily solidified, which significantly increases the non-processing time and restricts the improvement of production rhythm, which is not conducive to the realization of high efficiency and continuous production. More importantly, after cutting, the glue needs to be softened or decomposed through high-temperature cooking or long-time baking (usually at a temperature of 100-150℃ for tens of minutes to several hours) to peel off the magnetic sheet from the jig one by one. This glue removal process not only causes significant energy consumption, but also further prolongs the overall process cycle and increases production costs. In addition, when cutting cylindrical neodymium iron boron magnet raw materials, it is difficult to ensure the accurate alignment of the end faces of each material during manual loading due to the differences in the lengths of the raw materials, resulting in inconsistent lengths of the magnetic sheet at both ends after cutting, poor size consistency, and a large amount of waste that does not meet the specifications, which seriously affects the material utilization rate and product yield. SUMMARY

[0004] Therefore, the present application provides a neodymium iron boron magnet cutting device and a use method thereof, which can overcome the shortcomings of the existing cutting device that highly depends on glue for fixing the material, is difficult to operate, has low work efficiency, and is difficult to ensure the accurate alignment of the end faces of the material.

[0005] The technical scheme is as follows: a neodymium iron boron magnet cutting device, comprising a wire cutting machine, a lifting platform slidingly connected to the inside of the wire cutting machine, a first lead screw motor symmetrically installed in the inside of the wire cutting machine, and a lead screw of the first lead screw motor being threadedly connected with the lifting platform, a placing plate placed on the top of the lifting platform, clamping plates symmetrically slidingly connected to the placing plate, a lifting plate slidingly connected to the mounting frame of the wire cutting machine, a return spring having two ends respectively connected with the lifting plate and the mounting frame, a pressing frame connected to the bottom of the lifting plate and located directly above the placing plate, rotating push frames respectively and symmetrically rotatingly connected to the lifting plate and the lifting platform, a first vertical plate connected to the top of the placing plate, elastic sheets respectively connected to the side surfaces of the two clamping plates and contacting each other, a rotating assembly arranged on the lifting plate and the lifting platform and used to drive the rotating push frames to rotate, and an alignment assembly arranged on the placing plate and used to push the material to move and align.

[0006] As an improvement of the above scheme, the rotating assembly comprises a double-rod air cylinder symmetrically installed on the top of the lifting plate and the inner top of the lifting platform, and a moving rod connected to the telescopic rod of the double-rod air cylinder, and the rotating push frame is symmetrically provided with a guide hole, and the moving rod slides in the guide hole.

[0007] As an improvement of the above scheme, the alignment assembly comprises a fixing seat symmetrically connected to the top of the placing plate, a sliding rod slidingly connected to the fixing seat, a second vertical plate connected to the end of the sliding rod, and a moving mechanism arranged on the mounting frame and used to drive the second vertical plate to move.

[0008] As an improvement of the above scheme, the moving mechanism comprises a first air cylinder symmetrically installed on the mounting frame, a connecting rod connected to the telescopic rod of the first air cylinder, and a first rotating roller rotatingly connected to the connecting rod and in contact with the second vertical plate.

[0009] As an improvement of the above scheme, the tension control assembly comprises a moving frame slidingly connected to the inner side of the mounting frame, a roller shaft rotatingly connected to the inside of the moving frame and in contact with the cutting wire of the wire cutting machine, a second air cylinder symmetrically installed on the mounting frame, a connecting block connected to the telescopic rod of the second air cylinder, a pressure sensor symmetrically installed on the moving frame and in sliding connection with the connecting block, and a connecting spring having two ends respectively connected with the pressure sensor and the connecting block.

[0010] As the improvement of the above-mentioned scheme, the feeding assembly further comprises: a fixed frame connected to the side of the wire cutting machine; a lifting frame slidingly connected to the fixed frame; a first electric push rod installed on the fixed frame, and the telescopic rod of the first electric push rod being connected with the lifting frame; second rotating rollers uniformly and interval rotatingly connected to the lifting frame; a second screw motor installed on the fixed frame; a moving frame slidingly connected to the fixed frame, and the screw rod of the second screw motor being threadedly connected with the moving frame; and a connecting mechanism arranged on the moving frame and used for connecting the moving frame and the placing plate.

[0011] As the improvement of the above-mentioned scheme, the connecting mechanism comprises: a second electric push rod installed on the moving frame; and a locking frame slidingly connected to the moving frame, the telescopic rod of the second electric push rod being connected with the locking frame, and the placing plate being symmetrically provided with round holes, the locking frame being insertedly matched with the round holes.

[0012] The application further provides a use method of the neodymium-iron-boron magnet cutting device, which comprises the following steps: firstly, stacking the neodymium-iron-boron magnet raw materials on the top of the placing plate; then, placing the placing plate on the top of the lifting table; then, controlling the first cylinder to drive the connecting rod and the first rotating roller to move towards the placing plate through the control box; the first rotating roller drives the second vertical plate to move leftwards, the second vertical plate drives the neodymium-iron-boron magnet raw materials to move leftwards, so that the left side of the neodymium-iron-boron magnet raw materials is in contact with the first vertical plate; then, controlling the double-rod cylinder at the lower side to drive the moving rods at the front and back sides to move to the opposite sides through the control box; the moving rods are matched with the guide holes to drive the rotating push frame at the lower side to rotate upwards to be in contact with the clamping plate, so as to drive the clamping plates at the front and back sides to move to the opposite sides, so as to limit the neodymium-iron-boron magnet raw materials; then, controlling the wire cutting machine to start working and controlling the first screw motor to drive the lifting table to move upwards through the control box; the lifting table can drive the placing plate, the clamping plate, the first vertical plate and the second vertical plate to move upwards; at the same time, the placing plate can drive the neodymium-iron-boron magnet raw materials thereon to move upwards; when the top of the neodymium-iron-boron magnet raw materials is in contact with the bottom of the pressing frame, the pressing frame and the lifting plate can be synchronously driven to move upwards, and the reset spring is compressed; when the neodymium-iron-boron magnet raw materials are in contact with the cutting wire, the cutting wire can cut the neodymium-iron-boron magnet raw materials; when the lifting table is lifted to the specified position, i.e., when the cutting wire is about to be in contact with the top of the rotating push frame at the lower side, the control box controls the double-rod cylinder at the upper side to drive the moving rods at the front and back sides to move to the opposite sides, the moving rods are matched with the guide holes to drive the rotating push frame at the upper side to rotate downwards to be in contact with the clamping plate; then, the control box controls the double-rod cylinder at the lower side to drive the moving rods at the front and back sides to move to the opposite sides to reset, the moving rods are matched with the guide holes to drive the rotating push frame at the lower side to rotate downwards to reset, so that the rotating push frame at the lower side is separated from the clamping plate; after the cutting of the neodymium-iron-boron magnet raw materials is completed, the control box controls the wire cutting machine to stop working.

[0013] The beneficial effects are: 1, the lifting plate, the pressing frame, the clamping plate, the first vertical plate and the second vertical plate are cooperated, the magnet raw material placed on the placing plate can be mechanically limited and compressed from the upper and lower, front and rear, left and right six directions, the multi-direction clamping mode can effectively replace the traditional gluing fixing method, a series of cumbersome processes such as gluing, curing and high-temperature degumming are avoided, the production efficiency is improved, the energy consumption and production cost are reduced, and the glue pollution is avoided.

[0014] 2, the alternating action of the upper and lower two groups of rotating push frames and the double-rod air cylinder can realize seamless connection of clamping and avoiding cutting, and guarantee the fluency and safety of continuous cutting operation, specifically, before cutting starts, the lower rotating push frame pushes the clamping plate to move and limits the material, when the cutting line is about to contact the lower rotating push frame, the control system triggers the upper rotating push frame to rotate downward to replace the clamping task, and then the lower rotating push frame is automatically retracted to avoid, this design ingeniously converts the fixed mechanical block into the dynamically switchable clamping force, which can ensure that the material is clamped at all times during the whole cutting process, prevent displacement caused by vibration, effectively avoid interference or damage of the clamping mechanism to the high-speed running cutting line, and ensure the continuity and safety of the cutting process.

[0015] 3, the first cylinder drives the first rotating roller to push the second vertical plate to move to the left, so that the second vertical plate pushes all raw materials to the reference surface of the first vertical plate, at least the left end of the raw material can be in close contact with the first vertical plate, the forced alignment of the end face is realized, so that the generation of waste products is effectively reduced, and the product yield and material utilization rate are improved.

[0016] 4, the second cylinder drives the connecting block to exert force on the pressure sensor and the moving frame through the connecting spring, and then the roller shaft exerts vertical pressure on the cutting line to adjust the tension of the cutting line, the pressure sensor monitors the pressure data in real time and feeds back to the control system, forming a closed loop control, so that the tension of the cutting line can be dynamically maintained at the best set value, and the automatic compensation mechanism can effectively offset the tension attenuation caused by wire wear or temperature change in the cutting process, and ensure the stability of the cutting process and the quality of the cutting section. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the three-dimensional structure of the application.

[0018] Figure 2 It is an installation schematic view of the placing plate, the clamping plate, the lifting plate, the return spring and the rotating push frame of the application.

[0019] Figure 3 It is a specific structure schematic view of the lifting plate and the pressing frame of the application.

[0020] Figure 4 The installation schematic diagram of the first vertical plate and the elastic sheet of the present application.

[0021] Figure 5 The installation schematic diagram of the rotating assembly of the present application.

[0022] Figure 6 The cooperation structure schematic diagram of the rotating push rack and the moving rod of the present application.

[0023] Figure 7 The installation schematic diagram of the alignment assembly of the present application.

[0024] Figure 8 The installation schematic diagram of the moving frame, the roller shaft, the second air cylinder and the pressure sensor of the present application.

[0025] Figure 9 The separation structure schematic diagram of the pressure sensor and the connecting spring of the present application.

[0026] Figure 10 The contact schematic diagram of the cutting wire and the roller shaft of the present application.

[0027] Figure 11 The installation schematic diagram of the loading assembly of the present application.

[0028] In the figure, 1 is a wire cutting machine, 101 is a mounting frame, 102 is a cutting wire, 2 is a lifting platform, 3 is a first screw motor, 4 is a placing plate, 5 is a clamping plate, 6 is a lifting plate, 7 is a return spring, 8 is a pressing frame, 9 is a rotating push rack, 10 is a first vertical plate, 11 is an elastic sheet, 12 is a double-rod air cylinder, 13 is a moving rod, 14 is a guide hole, 15 is a fixing seat, 16 is a sliding rod, 17 is a second vertical plate, 18 is a first air cylinder, 19 is a connecting rod, 20 is a first rotating roller, 21 is a moving frame, 22 is a roller shaft, 23 is a second air cylinder, 2301 is a connecting block, 24 is a pressure sensor, 25 is a connecting spring, 26 is a fixing frame, 27 is a lifting frame, 28 is a first electric push rod, 29 is a second rotating roller, 30 is a second screw motor, 31 is a moving frame, 32 is a second electric push rod, 33 is a locking frame, and 34 is a round hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] Embodiment: A neodymium iron boron magnet cutting device and a using method thereof, like Figures 1-7As shown, including wire cutting machine 1, lifting platform 2, first lead screw motor 3, placing plate 4, clamping plate 5, lifting plate 6, reset spring 7, pressure frame 8, rotating push frame 9, first vertical plate 10, elastic sheet 11, rotating assembly and alignment assembly, the inside of wire cutting machine 1 is provided with mounting frame 101, wire cutting machine 1 is equipped with control box, the inside of wire cutting machine 1 is slidably connected with lifting platform 2 at the lower side, lifting platform 2 is slidably connected with mounting frame 101, first lead screw motor 3 is symmetrically installed on the inside of wire cutting machine 1 at the lower side, the lead screw of the two first lead screw motors 3 is in threaded connection with lifting platform 2, placing plate 4 is placed on the top of lifting platform 2, clamping plate 5 is slidably connected on placing plate 4 in front and back symmetry, a plurality of vertical grooves for the cutting wire 102 of wire cutting machine 1 to pass through are spaced apart from left to right on the two clamping plates 5, lifting plate 6 is slidably connected with the middle part of mounting frame 101, reset spring 7 is connected between the left and right sides of the top of lifting plate 6 and mounting frame 101, pressure frame 8 is connected to the bottom of lifting plate 6, and pressure frame 8 is located directly above placing plate 4, rotating push frame 9 is rotatably connected to the front and back of lifting plate 6, rotating push frame 9 is rotatably connected to the inside of lifting platform 2 at the upper side, the number of rotating push frame 9 is four, rotating push frame 9 is in contact with clamping plate 5, first vertical plate 10 is connected to the top left side of placing plate 4, elastic sheet 11 is connected to the lower side of the side of the two clamping plates 5, the two elastic sheets 11 are located in the inside of placing plate 4 and contact each other, rotating assembly for driving rotating push frame 9 to rotate is arranged on lifting plate 6 and lifting platform 2, alignment assembly for pushing material to move and align is arranged on placing plate 4.

[0031] As shown in Figure 5 and Figure 6 As shown, rotating assembly includes double-rod cylinder 12 and moving rod 13, double-rod cylinder 12 is symmetrically installed on the top of lifting plate 6, double-rod cylinder 12 is also symmetrically installed on the inner top of lifting platform 2, moving rod 13 is connected between the telescopic rods of the two double-rod cylinders 12 corresponding to the left and right, the number of moving rod 13 is four, guide hole 14 is symmetrically opened on the four rotating push frames 9, and moving rod 13 slides in guide hole 14.

[0032] As shown in Figure 7As shown, the alignment assembly comprises the fixed seat 15, the sliding rod 16, the second vertical plate 17 and the moving mechanism. The top right side of the placement plate 4 is symmetrically connected with the fixed seat 15, the upper part of the two fixed seats 15 is slidably connected with the sliding rod 16, the left end of the two sliding rods 16 is connected with the second vertical plate 17, the left side of the second vertical plate 17 is connected with the sponge pad, and the mounting frame 101 is provided with the moving mechanism for driving the second vertical plate 17 to move; the moving mechanism comprises the first cylinder 18, the connecting rod 19 and the first rotating roller 20, the lower right side of the mounting frame 101 is installed with two first cylinders 18, the telescopic rods of the two first cylinders 18 are connected with the connecting rod 19, the connecting rod 19 is rotatably connected with the first rotating roller 20, and the first rotating roller 20 is in contact with the second vertical plate 17.

[0033] When the neodymium iron boron magnet raw material needs to be cut, first, the neodymium iron boron magnet raw material is stacked on the top of the placement plate 4, at this time, the clamping plates 5 on the front and back sides can preliminarily limit the neodymium iron boron magnet raw material, preventing the neodymium iron boron magnet raw material from falling off the top of the placement plate 4, then the placement plate 4 is placed on the top of the lifting platform 2, and then the first cylinder 18 is controlled by the control box to drive the connecting rod 19 and the first rotating roller 20 to move in the direction of approaching the placement plate 4, when the first rotating roller 20 contacts the second vertical plate 17, the first rotating roller 20 can push the second vertical plate 17 to move left, when the second vertical plate 17 contacts the neodymium iron boron magnet raw material placed on the placement plate 4, it can push the neodymium iron boron magnet raw material to move left, so that the left side of the neodymium iron boron magnet raw material contacts the first vertical plate 10, if the length of the neodymium iron boron magnet raw material varies, the right side of the longer neodymium iron boron magnet raw material will sink into the sponge pad on the left side of the second vertical plate 17, to ensure the pushing effect of the second vertical plate 17 on the shorter neodymium iron boron magnet raw material, so as to ensure that the left side of all the neodymium iron boron magnet raw materials contacts the first vertical plate 10, ensuring the alignment of the left side of the neodymium iron boron magnet raw material; then the double-rod cylinder 12 on the lower side is controlled by the control box to drive the moving rods 13 on the front and back sides to move to the opposite sides, the moving rods 13 cooperate with the guide holes 14 to drive the lower rotating pusher 9 to rotate upward, when the lower rotating pusher 9 contacts the clamping plates 5, it can push the clamping plates 5 on the front and back sides to move to the opposite sides, the spring pieces 11 are compressed, when the clamping plates 5 contact the neodymium iron boron magnet raw material placed on the placement plate 4, they can limit the neodymium iron boron magnet raw material; then the wire cutting machine 1 starts to work by controlling the control box, and the first lead screw motor 3 is controlled to drive the lifting platform 2 to move upward, the lifting platform 2 can drive the placement plate 4, the clamping plates 5, the first vertical plate 10 and the second vertical plate 17 to move upward, at this time, the cutting wire 102 of the wire cutting machine 1 will enter the vertical groove on the clamping plate 5, and the first rotating roller 20 can roll along the right side of the second vertical plate 17 to maintain the limiting state of the second vertical plate 17, preventing the second vertical plate 17 from moving, at the same time, the placement plate 4 can drive the neodymium iron boron magnet raw material on it to move upward, when the top of the neodymium iron boron magnet raw material contacts the bottom of the pressing frame 8, it can push the pressing frame 8 and the lifting plate 6 to move upward synchronously, the return spring 7 is compressed, and under the elastic force of the return spring 7, the bottom of the pressing frame 8 can press the top of the neodymium iron boron magnet raw material, at this time, the placement plate 4, the clamping plates 5, the pressing frame 8, the first vertical plate 10 and the second vertical plate 17 cooperate to block and limit the front, back, left, right, up and down six sides of the neodymium iron boron magnet raw material, preventing the neodymium iron boron magnet raw material from moving;When the neodymium iron boron magnet raw material continues to move upward, the cutting wire 102 can cut the neodymium iron boron magnet raw material when the neodymium iron boron magnet raw material contacts the cutting wire 102, and when the lifting platform 2 rises to a specified position, that is, the cutting wire 102 is about to contact the top of the lower rotating pusher 9, the control box will first control the upper double-rod air cylinder 12 to drive the moving rods 13 on the front and back sides to move to opposite sides, the moving rods 13 and the guide holes 14 cooperate to drive the upper rotating pusher 9 to rotate downward, so that the upper rotating pusher 9 contacts the clamping plate 5, and then the control box will control the lower double-rod air cylinder 12 to drive the moving rods 13 on the front and back sides to move to opposite sides, the moving rods 13 and the guide holes 14 cooperate to drive the lower rotating pusher 9 to rotate downward and reset, so that the lower rotating pusher 9 is separated from the clamping plate 5, thereby preventing the lower rotating pusher 9 from contacting the cutting wire 102, at this time, the upper rotating pusher 9 contacts the clamping plate 5, so that the clamping plate 5 can limit the movement of the neodymium iron boron magnet raw material, and when the cutting of the neodymium iron boron magnet raw material is completed, the wire cutting machine 1 can be controlled to stop working by the control box, and the moving rods 13 on the front and back sides are controlled to move to opposite sides by the upper double-rod air cylinder 12, the moving rods 13 and the guide holes 14 cooperate to drive the upper rotating pusher 9 to rotate upward and reset, so that the upper rotating pusher 9 is separated from the clamping plate 5, at this time, the elastic sheet 11 returns to the original state, and drives the clamping plates 5 on the front and back sides to move to opposite sides and reset, then the first air cylinder 18 is controlled to drive the connecting rod 19 and the first rotating roller 20 to move away from the placement plate 4 and reset, so that the first rotating roller 20 is separated from the second vertical plate 17, so that the clamping plate 5 and the second vertical plate 17 can first release the limitation of the neodymium iron boron magnet raw material, prevent the neodymium iron boron magnet raw material from moving left and right due to stress and clamping the cutting wire 102, then the lifting platform 2 can be driven downward and reset by the first lead screw motor 3, the lifting platform 2 can drive the placement plate 4, the clamping plate 5, the first vertical plate 10 and the second vertical plate 17 to move downward and reset, and the cutting wire 102 of the wire cutting machine 1 can gradually exit from the vertical groove on the clamping plate 5, at the same time, the placement plate 4 can drive the cut neodymium iron boron magnet raw material to move downward, so that the neodymium iron boron magnet raw material is separated from the cutting wire 102, at this time, the reset spring 7 returns to the original state, and drives the lifting plate 6 and the pressing frame 8 to move downward synchronously, at this time, the placement plate 4 and the pressing frame 8 always limit the neodymium iron boron magnet raw material from above and below, so that the neodymium iron boron magnet raw material is prevented from being clamped by the cutting wire 102 during movement, until the cutting wire 102 is separated from the vertical groove on the clamping plate 5, and then the placement plate 4 can be taken out from the top of the lifting platform 2, and finally the cut neodymium iron boron magnet raw material can be taken out.

[0034] As Figures 8-10As shown, the tension control assembly further comprises a moving frame 21, a roller shaft 22, a second cylinder 23, a connecting block 2301, a pressure sensor 24 and a connecting spring 25, the upper rear side of the mounting frame 101 is slidably connected with the moving frame 21, the inside of the moving frame 21 is rotatably connected with the roller shaft 22, and the cutting wire 102 of the wire cutting machine 1 is in contact with the roller shaft 22, the upper rear side of the mounting frame 101 is symmetrically installed with the second cylinder 23, the connecting block 2301 is connected to the telescopic rod of each second cylinder 23, the upper of the moving frame 21 is symmetrically installed with the pressure sensor 24, the pressure sensor 24 is slidably penetrated through the upper of the mounting frame 101, and the connecting block 2301 is slidably connected with the pressure sensor 24, and the connecting spring 25 is connected between the connecting block 2301 and the pressure sensor 24.

[0035] In the initial state, the roller shaft 22 applies vertical pressure to the cutting wire 102, the connecting spring 25 is compressed under the reaction force and vertically feeds the pressure to the pressure sensor 24, the pressure sensor 24 can feed the monitoring data to the control box, which is converted into the actual tension of the cutting wire 102 by algorithm, so as to achieve the purpose of real-time monitoring of the actual tension of the cutting wire 102; when the actual tension of the cutting wire 102 is less than the preset threshold value, the control box controls the second cylinder 23 to drive the connecting block 2301 to move towards the cutting wire 102, the connecting block 2301 can push the connecting spring 25, the pressure sensor 24, the moving frame 21 and the roller shaft 22 to move towards the cutting wire 102, so as to increase the vertical pressure of the roller shaft 22 on the cutting wire 102, thereby increasing the actual tension of the cutting wire 102, when the actual tension of the cutting wire 102 is equal to the preset threshold value, the control box controls the second cylinder 23 to stop working, otherwise, the vertical pressure of the roller shaft 22 on the cutting wire 102 can be reduced, thereby achieving the purpose of real-time control of the actual tension of the cutting wire 102, and ensuring the cutting effect of the cutting wire 102 on the neodymium iron boron magnet raw material.

[0036] As Figure 1 , Figure 5 and Figure 11As shown, it also includes a feeding assembly, the feeding assembly includes a fixing frame 26, a lifting frame 27, a first electric push rod 28, a second rotating roller 29, a second screw motor 30, a moving frame 31 and a connecting mechanism, the right lower part of the wire cutting machine 1 is connected with the fixing frame 26, the inside of the fixing frame 26 is slidably connected with the lifting frame 27, the inner bottom of the fixing frame 26 is installed with the first electric push rod 28, and the telescopic rod of the first electric push rod 28 is connected with the bottom of the lifting frame 27, a plurality of second rotating rollers 29 are uniformly and intervally rotatably connected on the lifting frame 27, the plurality of second rotating rollers 29 are divided into two layers, the upper part of the fixing frame 26 is installed with the second screw motor 30, the upper part of the fixing frame 26 is slidably connected with the moving frame 31, and the screw rod of the second screw motor 30 is threadedly connected with the rear part of the moving frame 31, the moving frame 31 is provided with the connecting mechanism for temporarily connecting the moving frame 31 and the placing plate 4; the connecting mechanism includes a second electric push rod 32 and a locking frame 33, the lower part of the moving frame 31 is installed with the second electric push rod 32, the left part of the moving frame 31 is slidably connected with the locking frame 33, and the telescopic rod of the second electric push rod 32 is connected with the locking frame 33, the right part of the placing plate 4 is symmetrically provided with a round hole 34 in front and back, and the locking frame 33 is insertedly matched with the round hole 34.

[0037] When the Nd-Fe-B magnet raw material needs to be cut, first, a placing plate 4 loaded with the Nd-Fe-B magnet raw material is placed on the top of the second rotating roller 29 on the upper layer, then the second lead screw motor 30 is controlled through the control box to drive the moving frame 31 to move to the left, when the moving frame 31 contacts the placing plate 4 loaded with the Nd-Fe-B magnet raw material, the placing plate 4 loaded with the Nd-Fe-B magnet raw material can be pushed to move to the left, the second rotating roller 29 on the upper layer can rotate by itself due to the friction between the second rotating roller 29 and the bottom of the placing plate 4, thereby assisting the placing plate 4 loaded with the Nd-Fe-B magnet raw material to move to the left, until the placing plate 4 loaded with the Nd-Fe-B magnet raw material moves to the designated position on the top of the lifting platform 2, then the second lead screw motor 30 is controlled through the control box to drive the moving frame 31 to move to the right to reset, so that the next placing plate 4 loaded with the Nd-Fe-B magnet raw material can be prepared and placed on the top of the second rotating roller 29 on the lower layer, when the cut Nd-Fe-B magnet raw material needs to be taken out, the above operation is repeated, the moving frame 31 is controlled to move to the left again, so that the moving frame 31 contacts the placing plate 4 loaded with the cut Nd-Fe-B magnet raw material, at this time the locking frame 33 can be vertically aligned with the round hole 34, then the second electric push rod 32 is controlled through the control box to drive the locking frame 33 to move downward, so that the locking frame 33 is inserted into the round hole 34, then the moving frame 31 is controlled to move to the right to reset, the moving frame 31 can pull the placing plate 4 loaded with the cut Nd-Fe-B magnet raw material to move to the right through the locking frame 33, until the placing plate 4 loaded with the cut Nd-Fe-B magnet raw material moves to the top of the second rotating roller 29 on the upper layer, then the second electric push rod 32 is controlled to drive the locking frame 33 to move upward to reset, so that the locking frame 33 is separated from the round hole 34, then the control box controls the first electric push rod 28 to drive the lifting frame 27 to move upward by a specified distance, so that the next placing plate 4 loaded with the Nd-Fe-B magnet raw material is aligned with the moving frame 31, the above operation is repeated to push the next placing plate 4 loaded with the Nd-Fe-B magnet raw material to the left for feeding, so that the automatic feeding and discharging of the Nd-Fe-B magnet raw material can be realized, and the danger of accidental contact with the cutting wire 102 when manually feeding and discharging can be prevented.

[0038] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application.

Claims

1. A neodymium iron boron magnet cutting device, comprising: a wire cutting machine (1); characterized in that, It also includes: a lifting platform (2), which is slidably connected to the inside of the wire cutting machine (1); a first lead screw motor (3), which is symmetrically installed inside the wire cutting machine (1), and the lead screw of the first lead screw motor (3) is threadedly connected to the lifting platform (2); a placement plate (4), which is placed on the top of the lifting platform (2); a clamping plate (5), which is symmetrically slidably connected to the placement plate (4); a lifting plate (6), which is slidably connected to the mounting frame (101) of the wire cutting machine (1); a return spring (7), which is connected at both ends to the lifting plate (6) and the mounting frame (101) respectively; and a pressure frame (8), which is connected to the lifting plate (6) and the mounting frame (101). At the bottom of the lifting plate (6), and the pressure frame (8) is located directly above the placement plate (4); the rotating pusher (9) is symmetrically rotated and connected to the lifting plate (6) and the lifting platform (2); the first vertical plate (10) is connected to the top of the placement plate (4); the spring piece (11) is connected to the side of the two clamping plates (5) respectively, and the two spring pieces (11) are in contact with each other; the rotating assembly is set on the lifting plate (6) and the lifting platform (2) to drive the rotating pusher (9) to rotate; the alignment assembly is set on the placement plate (4) to push the material to move and align.

2. The neodymium iron boron magnet cutting device according to claim 1, characterized in that, The rotating assembly includes: a double-rod cylinder (12), which is symmetrically installed on the top of the lifting plate (6) and the inner top of the lifting platform (2); a moving rod (13), which is connected to the telescopic rod of the double-rod cylinder (12), and a guide hole (14) is symmetrically opened on the rotating push frame (9), and the moving rod (13) slides in the guide hole (14).

3. The neodymium iron boron magnet cutting device according to claim 2, characterized in that, The alignment assembly includes: a fixed base (15) symmetrically connected to the top of the placement plate (4); a slide bar (16) slidably connected to the fixed base (15); a second vertical plate (17) connected to the end of the slide bar (16); and a moving mechanism set on the mounting frame (101) for driving the second vertical plate (17) to move.

4. The neodymium iron boron magnet cutting device according to claim 3, characterized in that, The moving mechanism includes: a first cylinder (18), symmetrically mounted on the mounting frame (101); a connecting rod (19), connected to the telescopic rod of the first cylinder (18); and a first rotating roller (20), rotatably connected to the connecting rod (19), and the first rotating roller (20) is in contact with the second vertical plate (17).

5. The neodymium iron boron magnet cutting device according to claim 1, characterized in that, It also includes a tension control assembly, which includes: a movable frame (21) slidably connected to the inside of the mounting frame (101); a roller shaft (22) rotatably connected to the inside of the movable frame (21), and the cutting wire (102) of the wire cutting machine (1) is in contact with the roller shaft (22); a second cylinder (23) symmetrically mounted on the mounting frame (101); a connecting block (2301) connected to the telescopic rod of the second cylinder (23); a pressure sensor (24) symmetrically mounted on the movable frame (21), and the connecting block (2301) slidably connected to the pressure sensor (24); and a connecting spring (25) with the pressure sensor (24) and the connecting block (2301) connected at both ends respectively.

6. The neodymium iron boron magnet cutting device according to claim 1, characterized in that, It also includes a feeding assembly, which includes: a fixed frame (26) connected to the side of the wire cutting machine (1); a lifting frame (27) slidably connected to the fixed frame (26); a first electric push rod (28) installed on the fixed frame (26), and the telescopic rod of the first electric push rod (28) is connected to the lifting frame (27); a second rotating roller (29) rotatably connected to the lifting frame (27) at uniform intervals; a second lead screw motor (30) installed on the fixed frame (26); a moving frame (31) slidably connected to the fixed frame (26), and the lead screw of the second lead screw motor (30) is threadedly connected to the moving frame (31); and a connecting mechanism set on the moving frame (31) for connecting the moving frame (31) and the placement plate (4).

7. The neodymium iron boron magnet cutting device according to claim 6, characterized in that, The connecting mechanism includes: a second electric push rod (32), which is mounted on the movable frame (31); a locking frame (33), which is slidably connected to the movable frame (31), the telescopic rod of the second electric push rod (32) is connected to the locking frame (33), and there are symmetrical round holes (34) on the placement plate (4), and the locking frame (33) and the round holes (34) are inserted into each other.

8. A method using the neodymium iron boron magnet cutting device of claim 4, characterized in that, The process includes the following steps: First, the neodymium iron boron magnet raw materials are stacked on top of the placement plate (4). Then, the placement plate (4) is placed on top of the lifting platform (2). Next, the control box controls the first cylinder (18) to drive the connecting rod (19) and the first rotating roller (20) to move closer to the placement plate (4). The first rotating roller (20) pushes the second vertical plate (17) to move to the left. The second vertical plate (17) pushes the neodymium iron boron magnet raw materials to move to the left, so that the left side of the neodymium iron boron magnet raw materials contacts the first vertical plate (10). Then, the control box controls the lower double-rod cylinder (12). The moving rods (13) on the front and rear sides are driven to move to opposite sides. The moving rods (13) cooperate with the guide hole (14) to drive the rotating pusher (9) on the lower side to rotate upward until it contacts the clamping plate (5), so as to push the clamping plates (5) on the front and rear sides to move to opposite sides to limit the neodymium iron boron magnet raw material. Then, the wire cutting machine (1) is controlled by the control box to start working and the first screw motor (3) is controlled to drive the lifting platform (2) to move upward. The lifting platform (2) can drive the placement plate (4), clamping plate (5), first vertical plate (10) and second vertical plate (17) to move upward. The placement plate (4) can drive the neodymium iron boron magnet raw material on it to move upward. When the top of the neodymium iron boron magnet raw material contacts the bottom of the pressure frame (8), it can push the pressure frame (8) and the lifting plate (6) to move upward synchronously. The return spring (7) is compressed. When the neodymium iron boron magnet raw material contacts the cutting line (102), the cutting line (102) can cut the neodymium iron boron magnet raw material. When the lifting platform (2) rises to the designated position, that is, when the cutting line (102) is about to contact the top of the rotating push frame (9) on the lower side, the control box will first control the upper double rod cylinder (12) to drive the front. The moving rods (13) on both sides move to the opposite side. The moving rods (13) cooperate with the guide hole (14) to drive the upper rotating pusher (9) to rotate downwards until it contacts the clamping plate (5). Then the control box will control the lower double rod cylinder (12) to drive the moving rods (13) on both sides to move to the opposite side to reset. The moving rods (13) cooperate with the guide hole (14) to drive the lower rotating pusher (9) to rotate downwards to reset, so that the lower rotating pusher (9) is separated from the clamping plate (5). After the neodymium iron boron magnet raw material is cut, the wire cutting machine (1) is stopped by controlling the control box.

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