Laser cutting device and cutting method for double-layer magnetic sheet

Abstract

The invention discloses a laser cutting device and method for a double-layer magnetic sheet. The cutting device comprises a workbench, a storage bin, a distribution partition plate, a pushing assembly, a clamping assembly and a laser source, wherein the storage bin, the distribution partition plate, the pushing assembly, the clamping assembly and the laser source are arranged on the workbench. The cutting method comprises the steps that S1, a plurality of to-be-cut magnetic sheets are stacked in the storage bin, and holes are preset in the distribution partition plate; s2, the two to-be-cut magnetic sheets are pushed to the upper side and the lower side of a machining station material distributing partition plate through an upper layer material distributing channel and a lower layer material distributing channel of a material distributing rail by means of a material pushing assembly, and the two to-be-cut magnetic sheets are vertically clamped and fixed by means of a material clamping assembly; s3, synchronous laser cutting is conducted on the to-be-cut magnetic sheets on the upper side and the lower side of the distributing partition plate; and S4, the cut magnetic sheets on the upper side and the lower side of the distributing partition plate are pushed out of a machining station through a pushing assembly. The to-be-cut magnetic sheets on the upper side and the lower side of the material distribution partition plate can be cut at the same time, the machining efficiency is improved, the clamping assemblies vertically clamp the to-be-cut magnetic sheets, the risk of magnetic sheet breakage or middle collapse is avoided, and the cutting effect and quality are improved.

Description

Technical Field

[0001] The present invention relates to the field of laser processing technology, and in particular to a laser cutting device and a cutting method for a double-layer magnetic sheet. Background Art

[0002] NdFeB permanent magnet material, known as the "king of magnets", is a tetragonal crystal formed by the combination of neodymium, iron and boron elements. According to different production processes, it is subdivided into three categories: sintered NdFeB, bonded NdFeB and hot-pressed NdFeB. Among them, sintered NdFeB materials are often prone to cracking and breakage during processing due to their inherent brittleness and the limitations of traditional mechanical processing methods in precision control.

[0003] To solve this problem, laser cutting technology has been successfully applied to the processing of NdFeB magnetic materials in recent years due to its unparalleled precision manufacturing characteristics, flexible processing capabilities, excellent processing of complex shapes, high efficiency of one-time molding and high-speed operation.

[0004] The working principle of laser cutting is to focus a high-intensity laser beam on the material to be processed, causing it to heat up locally to above the melting point, and then use the coaxial high-pressure gas or metal vapor pressure generated by the laser to blow the molten metal away from the processing area. As the laser beam and the material move linearly relative to each other, continuous tiny holes are formed, eventually forming a very narrow cutting gap to achieve precise processing.

[0005] However, most laser cutting machine designs on the market are limited to single-station operation modes. Even if there are a few dual-station designs (such as dual-station laser cutting equipment shown in patent numbers CN110328452A and CN115283848A), they still cannot get rid of the limitation of processing only a single magnetic sheet at a time. In addition, the structure of the dual-station equipment is more complicated, and the time for loading and unloading is increased, which further affects the processing efficiency. And when processing thin magnetic sheets with a thickness of less than 0.4 mm, the traditional horizontal clamping and fixing method on both sides has a limited force area, which leads to an increase in the horizontal pressure of the magnetic sheet during cutting, thereby increasing the risk of the magnetic sheet breaking or collapsing in the middle during the cutting process, affecting the cutting effect and the final product quality. Summary of the invention

[0006] The object of the present invention is to provide a laser cutting device and a cutting method for double-layer magnetic sheets, which can simultaneously perform laser cutting on two layers of magnetic sheets, improve cutting efficiency, and ensure product quality.

[0007] To achieve the above-mentioned purpose, the solution of the present invention is: a laser cutting device for double-layer magnetic sheets, comprising a workbench and a material storage bin, a material dividing partition, a material pushing assembly, a material clamping assembly and a laser source arranged on the workbench; A material dividing track is provided on the workbench, a material storage bin is provided at one end of the material dividing track for storing magnetic sheets to be cut, a material dividing partition is provided at the other end of the material dividing track, and an upper material dividing channel and a lower material dividing channel are provided on the material dividing track, the upper material dividing channel and the lower material dividing channel extend to the other end of the material dividing track and correspond to the upper and lower sides of the material dividing partition; The push assembly is slidably arranged at a position matching the material dividing track, and is used to push two magnetic sheets to be cut in the storage bin onto the material dividing track, wherein one magnetic sheet to be cut is pushed to the upper side of the material dividing partition through the upper material dividing channel, and the other magnetic sheet to be cut is pushed to the lower side of the material dividing partition through the lower material dividing channel; The clamping assembly is arranged at the other end of the dividing track, and is used for vertically clamping the magnetic sheets to be cut on the upper and lower sides of the dividing partition. The laser source is arranged at a position matching the dividing partition. The dividing partition is preset with holes for the laser source to pass through. The laser source is used for simultaneously cutting the magnetic sheets to be cut on the upper and lower sides of the dividing partition.

[0008] Preferably, the workbench includes a left material plate and a right material plate, the left material plate and the right material plate are horizontally arranged opposite to each other, the material dividing tracks are respectively opened on the opposite sides of the left material plate and the right material plate, and the pushing assembly is slidably arranged between the left material plate and the right material plate.

[0009] In a preferred embodiment, the material dividing tracks of the left material plate and the right material plate are respectively provided with a convex strip horizontally along the length direction, and the convex strip extends from the middle of the material dividing track to the other end of the material dividing track, an upper material dividing channel is formed above the convex strip, and a lower material dividing channel is formed below the convex strip, and the convex strip is inclined downward near one end of the material dividing track.

[0010] In a preferred embodiment, the pusher assembly comprises a first cylinder, a first connecting rod, a first push block, a connecting plate, a second cylinder, a second connecting rod and a second push block; The output end of the first cylinder is horizontally arranged, and the first push block is located between the left material plate and the right material plate. The first push block is connected to the output end of the first cylinder through a first connecting rod, and the connecting plate is connected to the first push block. The second cylinder is fixed on the connecting plate and is located below the material dividing track. The output end of the second cylinder is vertically arranged, and the second push block is connected to the output end of the second cylinder through a second connecting rod, and the second push block is located between the left material plate and the right material plate.

[0011] In a preferred embodiment, an inclined surface is provided at one end of the first push block close to the first cylinder, and a step surface is provided at the other end of the first push block away from the first cylinder, wherein the height of the step surface is equal to the sum of the heights of the two magnetic sheets to be cut, and the thickness of the end of the first push block close to the first cylinder is smaller than the thickness of the other end of the first push block away from the first cylinder.

[0012] Preferably, two push plates are horizontally arranged on the second push block, and the distance between the two push plates is equal to the thickness of the material dividing partition.

[0013] In a preferred embodiment, the material storage bin includes a left stopper and a right stopper, the left stopper is arranged at one end of the left material plate, and the right stopper is arranged at one end of the right material plate, the distance between the left stopper and the right stopper matches the size of the magnetic sheet to be cut, and several magnetic sheets to be cut are placed horizontally and stacked between the left stopper and the right stopper, and the two magnetic sheets to be cut at the bottom are located in the material dividing track.

[0014] The preferred embodiment is that the clamping assembly includes a third cylinder, a third connecting rod, a fixed connecting block, an upper clamp and a lower clamp; the output end of the third cylinder is horizontally arranged and perpendicular to the material dividing track, the fixed connecting block is arranged on the workbench, a clearance groove is opened on the workbench, the upper clamp and the lower clamp are located in the clearance groove, the middle part of the upper clamp and the lower clamp are hinged on the fixed connecting block, one end of the upper clamp and the lower clamp is connected to the output end of the third cylinder through the third connecting rod, and the other end of the upper clamp and the lower clamp is used to vertically clamp the magnetic sheets to be cut on the upper and lower sides of the material dividing partition.

[0015] In a preferred embodiment, the laser source is arranged above the material dividing partition.

[0016] A laser cutting method for a double-layer magnetic sheet, using the above-mentioned laser cutting device for a double-layer magnetic sheet, the laser cutting method comprising: S1: stack multiple magnetic sheets to be cut on a storage bin at one end of a material dividing track, and fix a material dividing partition on a processing position at the other end of the material dividing track, wherein the material dividing partition is preset with holes consistent with the cutting pattern; S2: Push two magnetic sheets to be cut in the storage bin to the material dividing track of the workbench at the same time by the material pushing component. During the pushing, one of the magnetic sheets to be cut is pushed to the upper side of the material dividing partition through the upper material dividing channel, and the other magnetic sheet to be cut is pushed to the lower side of the material dividing partition through the lower material dividing channel. The magnetic sheets to be cut on the upper and lower sides of the material dividing partition are vertically clamped by the material clamping component; S3: Setting the cutting parameters of the laser source, including cutting speed, cutting frequency, duty cycle, air pressure and energy ratio, and then starting the laser source. The laser source passes through the magnetic sheet to be cut on the upper side of the dividing partition and then synchronously cuts the magnetic sheet to be cut on the lower side of the dividing partition through the preset holes of the dividing partition. S4: After the cutting is completed, the laser source is turned off, and the pusher assembly pushes the cut magnetic sheets on the upper and lower sides of the dividing partition out of the processing position.

[0017] After adopting the above scheme, the beneficial effect of the present invention is that the present invention uses the pushing assembly to push the two magnetic sheets to be cut through the upper and lower material distribution channels of the material distribution track to the upper and lower sides of the material distribution partition at the processing position, and the material distribution partition is preset with holes for the laser source to pass through, so that the laser source can simultaneously cut the magnetic sheets to be cut on the upper and lower sides of the material distribution partition, greatly improving the processing efficiency. And the clamping assembly vertically clamps the magnetic sheets to be cut on the upper and lower sides of the material distribution partition, increasing the force area of ​​the magnetic sheets to be cut, so that the force direction of the magnetic sheets to be cut is in the vertical direction, avoiding the risk of magnetic sheet breakage or central collapse during the cutting process, and effectively improving the cutting effect and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of a laser cutting device in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a material pushing assembly in an embodiment of the present invention; Figure 3 is a schematic structural diagram of a material clamping assembly in an embodiment of the present invention; Figure 4 Schematic diagram of a left material plate and a right material plate provided with material dividing tracks in an embodiment of the present invention; Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 yes Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a structural schematic diagram of a rear view of a material storage bin arranged at one end of a material distribution track in an embodiment of the present invention; Figure 8 is a schematic structural diagram of a second push block in an embodiment of the present invention; Fig. 9 2 is a schematic diagram of the structure of the material dividing partition in the embodiment of the present invention; Fig.10 It is a schematic diagram of the embodiment of the present invention in which, after the right material plate and the clamping assembly are removed, the first push block in the material separation process pushes the two magnetic sheets to be cut to the upper and lower material separation channels respectively, and the two push plates of the second push block in the material unloading process push the cut magnetic sheets on the upper and lower sides of the material separation partition plate out of the processing position; Fig.11 It is a schematic diagram of the first push block moving backwards during the pre-feeding process and the two push plates of the second push block moving backwards to exit the material dividing partition plate after the right material plate and the clamping assembly are removed in the embodiment of the present invention; Fig.12 It is a schematic diagram of the embodiment of the present invention in which, after the right material plate and the clamping assembly are removed, the inclined surface of the first push block contacts the magnetic sheet to be cut at the bottom of the storage bin during the pre-loading process, and the second cylinder drives the two push plates on the second push block to descend during the pre-loading process; Fig.13 It is a schematic diagram of the first push block moving backward to the rear of the storage bin during the pre-loading process after the right material plate and the clamping assembly are removed in the embodiment of the present invention, and the second cylinder driving the two push plates on the second push block to rise during the pre-loading process; Fig.14 It is a schematic diagram of the step surface of the first push block in the material taking process pushing out the two magnetic sheets to be cut at the bottom of the storage bin after the right material plate and the clamping assembly are removed in the embodiment of the present invention, and the two push plates of the second push block in the material loading process push the magnetic sheets to be cut in the upper and lower material distribution channels respectively; Fig.15 This is a schematic diagram of an embodiment of the present invention in which, after the right material plate and the clamping assembly are removed, the step surface of the first push block in the material retrieval process pushes the two magnetic sheets to be cut at the bottom of the storage bin to the material dividing track, and the two push plates of the second push block in the loading process respectively push the two magnetic sheets to be cut in the upper and lower material dividing channels to the upper and lower sides of the material dividing partition of the processing position.

[0019] Description of labels: 1. Workbench; 11. Left material plate; 12. Right material plate; 13. Make way slot; 14. Material distribution track; 15. Raised strip; 16. Upper material distribution channel; 17. Lower material distribution channel; 2. Storage bin; 21. Left stopper; 22. Right stopper; 3. Material dividing plate; 31. Holes; 4. Pushing assembly; 41. First cylinder; 42. First connecting rod; 43. First pushing block; 431. Inclined surface; 432. Step surface; 44. Connecting plate; 45. Second cylinder; 46. Second connecting rod; 47. Second pushing block; 471. Pushing plate; 5. Material clamping assembly; 51. Third cylinder; 52. Third connecting rod; 53. Fixed connecting block; 54. Upper clamping jaw; 55. Lower clamping jaw; 6. Laser source; 71. Magnetic sheets to be cut; 72. Magnetic sheets that have been cut. DETAILED DESCRIPTION

[0020] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0021] This embodiment provides a laser cutting device for a double-layer magnetic sheet. Figures 1 to 9 As shown, it includes a workbench 1 and a material storage bin 2, a material dividing partition 3, a material pushing assembly 4, a material clamping assembly 5 and a laser source 6 arranged on the workbench 1; A material distribution track 14 is provided on the workbench 1, a material storage bin 2 is provided at one end of the material distribution track 14 for storing the magnetic sheets 71 to be cut, a material distribution partition 3 is provided at the other end of the material distribution track 14, and an upper material distribution channel 16 and a lower material distribution channel 17 are provided on the material distribution track 14, and the upper material distribution channel 16 and the lower material distribution channel 17 extend to the other end of the material distribution track 14 and correspond to the upper and lower sides of the material distribution partition 3; The pushing assembly 4 is slidably arranged at a position matching the material dividing track 14, and is used to push the two magnetic sheets 71 to be cut of the storage bin 2 onto the material dividing track 14, wherein one of the magnetic sheets 71 to be cut is pushed to the upper side of the material dividing partition 3 through the upper material dividing channel 16, and the other magnetic sheet 71 to be cut is pushed to the lower side of the material dividing partition 3 through the lower material dividing channel 17; The clamping assembly 5 is arranged at the other end of the dividing track 14, and is used for vertically clamping the magnetic sheets 71 to be cut on the upper and lower sides of the dividing partition 3. The laser source 6 is arranged at a position matching the dividing partition 3. The dividing partition 3 is preset with a hole 31 for the laser source 6 to pass through. The laser source 6 is used to simultaneously cut the magnetic sheets 71 to be cut on the upper and lower sides of the dividing partition 3.

[0022] The pushing component 4 of this embodiment pushes the two magnetic sheets 71 to be cut in the storage bin 2 to the dividing track 14 at one time. Since the dividing track 14 is provided with an upper dividing channel 16 and a lower dividing channel 17, during the pushing process, one of the magnetic sheets 71 to be cut is pushed to the upper side of the dividing partition 3 through the upper dividing channel 16, and the other magnetic sheet 71 to be cut is pushed to the lower side of the dividing partition 3 through the lower dividing channel 17. The design is ingenious.

[0023] After the light beam of the laser source 6 passes through the magnetic sheet 71 to be cut on the upper side of the dividing partition 3, since the dividing partition 3 is preset with a hole 31 consistent with the cutting pattern of the laser source 6, the light beam of the laser source 6 can pass through the hole 31 to synchronously cut the magnetic sheet 71 to be cut on the lower side of the dividing partition 3. Only one set of laser cutting system and a single workstation are needed to synchronously cut two magnetic sheets 71 to be cut at one time, which effectively improves the processing efficiency and reduces the deployment cost of the equipment.

[0024] When the magnetic sheet 71 to be cut is pushed to the dividing partition 3 at the processing position, the clamping assembly 5 vertically clamps the magnetic sheet 71 to be cut on the upper and lower sides of the dividing partition 3 to achieve the positioning of the two magnetic sheets 71 to be cut on the dividing partition 3. The force direction of the magnetic sheet 71 to be cut is the vertical direction, which avoids the risk of magnetic sheet breakage or central collapse during the cutting process, and effectively improves the cutting effect and product quality.

[0025] like Figure 1 and Figure 5As shown, the workbench 1 includes a left material plate 11 and a right material plate 12, and the left material plate 11 and the right material plate 12 are horizontally arranged opposite to each other. The material dividing tracks 14 are respectively opened on the opposite sides of the left material plate 11 and the right material plate 12, and the pushing assembly 4 is slidably arranged between the left material plate 11 and the right material plate 12.

[0026] The left material plate 11 and the right material plate 12 of the present embodiment have the same size and are both rectangular. The dividing rails 14 are respectively opened on the opposite sides of the left material plate 11 and the right material plate 12, that is, the dividing rails 14 are arranged on one side of the long sides of the left material plate 11 and the right material plate 12. The left material plate 11 and the right material plate 12 are arranged horizontally opposite to each other, and a sliding space is formed between the two opposite long sides of the left material plate 11 and the right material plate 12. The pushing assembly 4 is slidably arranged in the sliding space between the left material plate 11 and the right material plate 12, and is located below the left material plate 11 and the right material plate 12, so that the structure of the entire workbench 1 is more compact and the space utilization is improved.

[0027] like Figure 5 As shown, the material distribution track 14 of the left material plate 11 and the right material plate 12 of this embodiment is respectively provided with a convex strip 15 horizontally along the length direction, and the convex strip 15 extends from the middle of the material distribution track 14 to the other end of the material distribution track 14, and an upper material distribution channel 16 is formed above the convex strip 15, and a lower material distribution channel 17 is formed below the convex strip 15. The height of the upper material distribution channel 16 and the lower material distribution channel 17 matches the thickness of the magnetic sheet 71 to be cut, and the material distribution track 14 from one end to the middle of the material distribution track 14 constitutes an inlet. The material section is formed from the middle of the material dividing track 14 to the other end of the material dividing track 14, and the convex strip 15 is tilted downward near one end of the material dividing track 14, which is conducive to guiding one of the magnetic pieces 71 to be cut located at the top of the feeding section to the upper material dividing channel 16, while the other magnetic piece 71 to be cut located at the bottom of the feeding section directly enters the lower material dividing channel 17, ensuring that the two magnetic pieces 71 to be cut can be smoothly pushed to the upper and lower sides of the material dividing partition 3 at the processing position, and the design is ingenious.

[0028] like Figure 1 and Figure 2 As shown, the pusher assembly 4 includes a first cylinder 41, a first connecting rod 42, a first push block 43, a connecting plate 44, a second cylinder 45, a second connecting rod 46 and a second push block 47; The output end of the first cylinder 41 is horizontally arranged, the first push block 43 is located between the left material plate 11 and the right material plate 12, the first push block 43 is connected to the output end of the first cylinder 41 through the first connecting rod 42, the connecting plate 44 is connected to the first push block 43, the second cylinder 45 is fixed on the connecting plate 44, and is located below the material dividing track 14, the output end of the second cylinder 45 is vertically arranged, the second push block 47 is connected to the output end of the second cylinder 45 through the second connecting rod 46, and the second push block 47 is located between the left material plate 11 and the right material plate 12.

[0029] The first cylinder 41 of this embodiment cooperates with the first push block 43 to push the two magnetic sheets 71 to be cut in the storage bin 2 into the material distribution track 14, and pushes the two magnetic sheets 71 to be cut to the upper and lower sides of the material distribution partition 3 of the processing position through the upper material distribution channel 16 and the lower material distribution channel 17. The second cylinder 45 cooperates with the second push block 47 to push the cut magnetic sheets 72 on the upper and lower sides of the material distribution partition 3 of the processing position out of the material distribution partition 3. The various components of the push assembly 4 are compactly connected, which is conducive to improving space utilization. At the same time, the first push block 43 and the second push block 47 are respectively connected to the output ends of the first cylinder 41 and the second cylinder 45 through the first connecting rod 42 and the second connecting rod 46, ensuring the stability of the push. The first cylinder 41 and the second cylinder 45 can accurately control the push position of the magnetic sheet 71 to be cut to meet the demand for precise control of the cutting position. The first push block 43 of this embodiment is in an inverted L shape, but is not limited to this.

[0030] like Figure 2 As shown, an inclined surface 431 is provided at one end of the first push block 43 close to the first cylinder 41, and a step surface 432 is provided at the other end of the first push block 43 away from the first cylinder 41. The height of the step surface 432 is equal to the sum of the heights of the two magnetic sheets 71 to be cut, and the thickness of the first push block 43 at one end close to the first cylinder 41 is less than the thickness of the other end of the first push block 43 away from the first cylinder 41.

[0031] In this embodiment, when loading, the output end of the first cylinder 41 retracts backward, and the first push block 43 and the second push block 47 are pulled backward by the first connecting rod 42 and the connecting plate 44. An inclined surface 431 is set at the end of the first push block 43 close to the first cylinder 41. When the first push block 43 moves backward, the inclined surface 431 first contacts with the magnetic sheet 71 to be cut at the bottom of the storage bin 2, and as it continues to move backward, it pushes up the magnetic sheet 71 to be cut at the bottom of the storage bin 2, thereby avoiding interference with the magnetic sheet 71 to be cut at the bottom of the storage bin 2. The structure is simple and the design is ingenious. Therefore, the thickness of the end of the first push block 43 close to the first cylinder 41 is less than the thickness of the other end of the first push block 43 away from the first cylinder 41. The other end of the first push block 43 away from the first cylinder 41 is provided with a step surface 432, and the height of the step surface 432 is equal to the sum of the heights of the two magnetic sheets 71 to be cut. When the output of the first cylinder 41 extends forward, the step surface 432 of the other end of the first protrusion away from the first cylinder 41 can push out the two magnetic sheets 71 to be cut in the storage bin 2 at one time, ensuring the smooth progress of the subsequent cutting process.

[0032] like Figure 2 and Figure 8 As shown, two push plates 471 are horizontally arranged on the second push block 47 , and the distance between the two push plates 471 is equal to the thickness of the material dividing partition 3 .

[0033] In this embodiment, two push plates 471 are horizontally arranged on the second push block 47. The two push plates 471 have the same size and match the size of the material dividing track 14, and are both rectangular. Since the distance between the two push plates 471 is equal to the thickness of the material dividing partition 3, the second push block 47 can accurately push the magnetic pieces 71 to be cut in the upper material dividing channel 16 and the lower material dividing channel 17 to the upper and lower sides of the material dividing partition 3 through the push plates 471, or accurately push the cut magnetic pieces 72 on the upper and lower sides of the material dividing partition 3 out of the processing position through the push plates 471, so that the loading and unloading process is faster, which is conducive to improving the cutting efficiency.

[0034] like Figure 1 and Figure 7 As shown, the storage bin 2 of this embodiment includes a left stopper 21 and a right stopper 22. The left stopper 21 is arranged at one end of the left material plate 11, and the right stopper 22 is arranged at one end of the right material plate 12. The distance between the left stopper 21 and the right stopper 22 matches the size of the magnetic sheet 71 to be cut. Several magnetic sheets 71 to be cut are placed and stacked horizontally between the left stopper 21 and the right stopper 22, so that the magnetic sheets 71 to be cut can be effectively positioned. The structure is simple and convenient for subsequent maintenance. The two magnetic sheets 71 to be cut at the bottom are located in the material dividing track 14, which is beneficial to improving the loading efficiency.

[0035] like Figure 1 , Figure 3 and Figure 6 As shown, the clamping assembly 5 includes a third cylinder 51, a third connecting rod 52, a fixed connecting block 53, an upper clamp 54 and a lower clamp 55; the output end of the third cylinder 51 is horizontally arranged and perpendicular to the material distribution track 14, the fixed connecting block 53 is arranged on the workbench 1, and a clearance groove 13 is opened on the workbench 1, the upper clamp 54 and the lower clamp 55 are located in the clearance groove 13, the middle part of the upper clamp 54 and the lower clamp 55 are hinged on the fixed connecting block 53, one end of the upper clamp 54 and the lower clamp 55 are connected to the output end of the third cylinder 51 through the third connecting rod 52, and the other end of the upper clamp 54 and the lower clamp 55 are used to vertically clamp the magnetic sheets 71 to be cut on the upper and lower sides of the material distribution partition 3.

[0036] In this embodiment, the upper clamp 54 and the lower clamp 55 can accurately vertically clamp the magnetic sheet 71 to be cut on the upper and lower sides of the material dividing partition 3 through the drive of the third cylinder 51, thereby increasing the force-bearing area of ​​the magnetic sheet 71 to be cut, making the force-bearing direction of the magnetic sheet 71 to be cut vertical, avoiding the risk of magnetic sheet breakage or middle collapse during cutting, and effectively improving the cutting effect and product quality. Specifically, Figure 6As shown, the left and right feeding plates are provided with a clearance groove 13, the upper clamping jaw 54 and the lower clamping jaw 55 are located in the clearance groove 13, and the fixed connection block 53 is arranged at the clearance groove 13, wherein the fixed connection block 53 is formed by the middle part of the long strip plate protruding to one side, and the protruding part is hinged for the middle part of the upper clamping jaw 54 and the lower clamping jaw 55, and one end of the upper clamping jaw 54 and the lower clamping jaw 55 is connected to the output end of the third cylinder 51 through the third connecting rod 52, and the other end of the upper clamping jaw 54 and the lower clamping jaw 55 is used to vertically clamp the magnetic sheet 71 to be cut on the upper and lower sides of the material dividing partition 3. In this embodiment, two clamping components 5 are provided, but it is not limited thereto.

[0037] like Figure 1 As shown, the laser source 6 of this embodiment is arranged above the material dividing partition 3, so that the layout of the whole equipment is more compact and the utilization rate of the space is improved. Of course, in other embodiments, the position of the laser source 6 can also be fine-tuned.

[0038] The working process of the laser cutting device in this embodiment is as follows: like Fig.10 As shown, at this time, the upper and lower sides of the processing position dividing partition 3 are cut magnetic pieces 72, and two magnetic pieces 71 to be cut are placed in advance in the dividing track 14 before the cutting device is operated. The output end of the third cylinder 51 retracts, and the upper clamping jaw 54 and the lower clamping jaw 55 are driven to open in the clearance groove 13 through the third connecting rod 52.

[0039] The output end of the first cylinder 41 extends forward, and pushes the first push block 43 and the connecting plate 44 to move forward for the first time through the first connecting rod 42 .

[0040] During the first forward movement, on the one hand, the first push block 43 pushes the two magnetic sheets 71 to be cut pre-placed on the material distribution track 14 into the upper material distribution channel 16 and the lower material distribution channel 17 of the material distribution track 14 through the step surface 432. Fig.10 As shown, this is the material separation process; on the other hand, the two push plates 471 on the second push block 47 enter the material separation partition 3 and push the cut magnetic pieces 72 on the upper and lower sides of the material separation partition 3 out of the processing position along the upper material separation channel 16 and the lower material separation channel 17, as shown in FIG. Fig.10 As shown in the figure, this is the unloading process. The material separation process and unloading process are carried out simultaneously.

[0041] like Figures 11 to 13 As shown, the output end of the first cylinder 41 retracts backwards, and the first push block 43 and the connecting plate 44 are pulled backwards for the first time through the first connecting rod 42.

[0042] During the first backward movement, on the one hand, the inclined surface 431 of the first push block 43 first contacts the magnetic piece 71 to be cut at the bottom of the storage bin 2. Fig.11 and Fig.12As shown, the magnetic sheet 71 to be cut at the bottom of the storage bin 2 is pushed up with the continuous backward movement until the step surface 432 of the first push block 43 moves to the rear of the storage bin 2, as shown in FIG. Fig.13 As shown, this is the pre-feeding process; on the other hand, the two second push plates 471 on the second push block 47 are completely withdrawn from the material dividing partition 3, as shown in FIG. Fig.11 As shown, at the same time, the second cylinder 45 drives the second push block 47 and the two second push plates 471 to descend through the second connecting rod 46, and the connecting plate 44 continues to move backward, as shown in FIG. Fig.12 As shown, the positions of the two push plates 471 match the positions of the two magnetic sheets 71 to be cut in the previous step of the material separation process. At this time, the second cylinder 45 drives the second push block 47 and the two second push plates 471 to rise through the second connecting rod 46, as shown in FIG. Fig.13 As shown, the two second push plates 471 are in the same horizontal position as the two magnetic sheets 71 to be cut in the upper material distribution channel 16 and the lower material distribution channel 17, which is the pre-loading process. The pre-loading process and the pre-loading process are performed simultaneously.

[0043] like Fig.14 and Fig.15 As shown, the output end of the first cylinder 41 extends forward, and pushes the first push block 43 and the connecting plate 44 to move forward for the second time through the first connecting rod 42.

[0044] During the second forward movement, on the one hand, the first push block 43 pushes the two to-be-cut magnetic sheets 71 at the bottom of the storage bin 2 to the material distribution track 14 through the step surface 432. Fig.14 and Fig.15 As shown, this is the material taking process; on the other hand, the two second push plates 471 of the second push block 47 push the two magnetic sheets 71 to be cut from the upper material distribution channel 16 and the lower material distribution channel 17 along the distribution track 14 to the upper and lower sides of the processing position distribution partition 3, as shown in FIG. Fig.14 and Fig.15 As shown, this is the loading process. The material removal process and the loading process are carried out synchronously. At this time, the output end of the third cylinder 51 extends, and the upper clamping jaw 54 and the lower clamping jaw 55 in the clearance groove 13 are driven by the third connecting rod 52 to vertically clamp the magnetic pieces 71 to be cut on the upper and lower sides of the material dividing partition 3, and then laser cutting is performed.

[0045] like Fig.10 As shown, the output end of the first cylinder 41 extends forward, and pushes the first push block 43 and the connecting plate 44 to move forward for the third time through the first connecting rod 42.

[0046] During the third forward movement, on the one hand, the step surface 432 of the first push block 43 pushes the two magnetic sheets 71 to be cut on the material distribution track 14 into the upper material distribution channel 16 and the lower material distribution channel 17 of the material distribution track 14, such as Fig.10As shown, the material dividing process is continued; on the other hand, the two push plates 471 on the second push block 47 can enter the material dividing partition 3 and push the cut magnetic pieces 72 on the upper and lower sides of the material dividing partition 3 out of the processing position along the upper material dividing channel 16 and the lower material dividing channel 17, as shown in FIG. Fig.10 As shown, continue the unloading process.

[0047] In this way, the six processes of material separation, material unloading, pre-material taking, pre-material loading, material taking and material loading can realize automatic cutting of the double-layer magnetic sheet 71 to be cut by continuous reciprocating motion.

[0048] This embodiment also provides a laser cutting method for a double-layer magnetic sheet, using the above-mentioned laser cutting device for a double-layer magnetic sheet, the laser cutting method includes: S1: stack multiple magnetic sheets 71 to be cut on the storage bin 2 at one end of the dividing track 14, and fix the dividing partition 3 on the processing position at the other end of the dividing track 14. The dividing partition 3 is preset with holes 31 consistent with the cutting pattern; S2: Push the two magnetic sheets 71 to be cut in the storage bin 2 to the material dividing track 14 of the workbench 1 at the same time by the material pushing component 4. During the pushing, one of the magnetic sheets 71 to be cut is pushed to the upper side of the material dividing partition 3 through the upper material dividing channel 16, and the other magnetic sheet 71 to be cut is pushed to the lower side of the material dividing partition 3 through the lower material dividing channel 17. The magnetic sheets 71 to be cut on the upper and lower sides of the material dividing partition 3 are vertically clamped by the material clamping component 5. S3: Setting the cutting parameters of the laser source 6, including cutting speed, cutting frequency, duty cycle, air pressure and energy ratio, and then starting the laser source 6. The laser source 6 passes through the magnetic sheet 71 to be cut on the upper side of the dividing partition 3 and then synchronously cuts the magnetic sheet 71 to be cut on the lower side of the dividing partition 3 through the holes 31 preset on the dividing partition 3. S4: After the cutting is completed, the laser source 6 is turned off, and the material pushing component 4 pushes the cut magnetic pieces 72 on the upper and lower sides of the material dividing partition 3 out of the processing position.

[0049] In step S1 of this embodiment, a single-wire cutting machine, a multi-wire cutting machine or an inner circle slicer can be used to process the NdFeB blank material into a magnetic sheet 71 with a specific thickness to be cut, and the magnetic sheet 71 to be cut is inspected and the surface oil is cleaned. The specific dimensions of the magnetic sheet 71 to be cut in this embodiment are: 53.5 mm long, 47.3 mm wide, and 0.4 mm high.

[0050] In step S2 of this embodiment, a sensor can be set at the processing position to cooperate with the material racking component. Specifically, when the material pushing component 4 pushes the two magnetic sheets 71 to be cut in the material storage bin 2 to the upper and lower sides of the material dividing partition 3 at the processing position, the sensor detects that the material loading is completed, and at this time, the material clamping component 5 vertically clamps the magnetic sheets 71 to be cut on the upper and lower sides of the material dividing partition 3.

[0051] In step S3 of the present embodiment, the required product specifications are: 24.1mm long, 17.8mm wide, and 0.4mm high. Set the product specification pattern, product array, cutting starting point, optimal cutting path, and cutting parameters on the control software corresponding to the laser source 6. Specifically, the cutting speed is 40~60mm / s, the cutting frequency is 2~3kHz, the duty cycle is 10%-15%, the air pressure is 0.3~0.4MPa, and the energy ratio is 15%~20%. Of course, in step S1 and step S3, the preset holes 31 of the material dividing plate 3 and the parameters of the laser source 6 can be set according to the actual cutting requirements.

[0052] In step S4 of this embodiment, the cut magnetic sheets 72 that have been processed can be inspected for size, appearance, etc. If the inspection fails, the cutting parameters can be adjusted to ensure the quality of the final product.

[0053] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0054] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A laser cutting device for double-layer magnetic sheets, characterized in that: It includes a workbench and a material storage bin, a material dividing partition, a material pushing component, a material clamping component and a laser source arranged on the workbench; A material dividing track is provided on the workbench, a material storage bin is provided at one end of the material dividing track for storing magnetic sheets to be cut, a material dividing partition is provided at the other end of the material dividing track, and an upper material dividing channel and a lower material dividing channel are provided on the material dividing track, the upper material dividing channel and the lower material dividing channel extend to the other end of the material dividing track and correspond to the upper and lower sides of the material dividing partition; The push assembly is slidably arranged at a position matching the material dividing track, and is used to push two magnetic sheets to be cut in the storage bin onto the material dividing track, wherein one magnetic sheet to be cut is pushed to the upper side of the material dividing partition through the upper material dividing channel, and the other magnetic sheet to be cut is pushed to the lower side of the material dividing partition through the lower material dividing channel; The clamping assembly is arranged at the other end of the dividing track, and is used for vertically clamping the magnetic sheets to be cut on the upper and lower sides of the dividing partition. The laser source is arranged at a position matching the dividing partition. The dividing partition is preset with holes for the laser source to pass through. The laser source is used for simultaneously cutting the magnetic sheets to be cut on the upper and lower sides of the dividing partition.

2. A laser cutting device for double-layer magnetic sheets as claimed in claim 1, characterized in that: The workbench includes a left material plate and a right material plate, which are horizontally arranged opposite to each other, and the material dividing tracks are respectively opened on the opposite sides of the left material plate and the right material plate, and the pushing assembly is slidably arranged between the left material plate and the right material plate.

3. A laser cutting device for double-layer magnetic sheets as claimed in claim 2, characterized in that: The material dividing tracks of the left material plate and the right material plate are respectively provided with a convex strip horizontally along the length direction, and the convex strip extends from the middle of the material dividing track to the other end of the material dividing track, an upper material dividing channel is formed above the convex strip, and a lower material dividing channel is formed below the convex strip, and the convex strip is inclined downward near one end of the material dividing track.

4. A laser cutting device for double-layer magnetic sheets as claimed in claim 3, characterized in that: The pusher assembly includes a first cylinder, a first connecting rod, a first push block, a connecting plate, a second cylinder, a second connecting rod and a second push block; The output end of the first cylinder is horizontally arranged, and the first push block is located between the left material plate and the right material plate. The first push block is connected to the output end of the first cylinder through a first connecting rod, and the connecting plate is connected to the first push block. The second cylinder is fixed on the connecting plate and is located below the material dividing track. The output end of the second cylinder is vertically arranged, and the second push block is connected to the output end of the second cylinder through a second connecting rod, and the second push block is located between the left material plate and the right material plate.

5. A laser cutting device for double-layer magnetic sheets as claimed in claim 4, characterized in that: An inclined surface is provided at one end of the first push block close to the first cylinder, and a step surface is provided at the other end of the first push block away from the first cylinder. The height of the step surface is equal to the sum of the heights of the two magnetic sheets to be cut, and the thickness of the first push block at one end close to the first cylinder is less than the thickness of the other end of the first push block away from the first cylinder.

6. A laser cutting device for double-layer magnetic sheets as claimed in claim 4, characterized in that: Two push plates are horizontally arranged on the second push block, and the distance between the two push plates is equal to the thickness of the material dividing partition.

7. A laser cutting device for double-layer magnetic sheets as claimed in claim 2, characterized in that: The material storage bin includes a left stopper and a right stopper, wherein the left stopper is arranged at one end of the left material plate, and the right stopper is arranged at one end of the right material plate, and the distance between the left stopper and the right stopper matches the size of the magnetic sheets to be cut. Several magnetic sheets to be cut are placed horizontally and stacked between the left stopper and the right stopper, and the two magnetic sheets to be cut at the bottom are located in the material dividing track.

8. A laser cutting device for double-layer magnetic sheets as claimed in claim 1, characterized in that: The clamping assembly includes a third cylinder, a third connecting rod, a fixed connecting block, an upper clamp and a lower clamp; the output end of the third cylinder is horizontally arranged and perpendicular to the material dividing track, the fixed connecting block is arranged on a workbench, a clearance groove is opened on the workbench, the upper clamp and the lower clamp are located in the clearance groove, the middle part of the upper clamp and the lower clamp are hinged on the fixed connecting block, one end of the upper clamp and the lower clamp is connected to the output end of the third cylinder through the third connecting rod, and the other end of the upper clamp and the lower clamp is used to vertically clamp the magnetic sheets to be cut on the upper and lower sides of the material dividing partition.

9. A laser cutting device for double-layer magnetic sheets as claimed in claim 1, characterized in that: The laser source is arranged above the material dividing partition.

10. A laser cutting method for a double-layer magnetic sheet, characterized in that: A laser cutting device for a double-layer magnetic sheet as described in any one of claims 1 to 9 is used, and the laser cutting method comprises: S1: stack multiple magnetic sheets to be cut on a storage bin at one end of a material dividing track, and fix a material dividing partition on a processing position at the other end of the material dividing track, wherein the material dividing partition is preset with holes consistent with the cutting pattern; S2: Push two magnetic sheets to be cut in the storage bin to the material dividing track of the workbench at the same time by the material pushing component. During the pushing, one of the magnetic sheets to be cut is pushed to the upper side of the material dividing partition through the upper material dividing channel, and the other magnetic sheet to be cut is pushed to the lower side of the material dividing partition through the lower material dividing channel. The magnetic sheets to be cut on the upper and lower sides of the material dividing partition are vertically clamped by the material clamping component; S3: Setting the cutting parameters of the laser source, including cutting speed, cutting frequency, duty cycle, air pressure and energy ratio, and then starting the laser source. The laser source passes through the magnetic sheet to be cut on the upper side of the dividing partition and then synchronously cuts the magnetic sheet to be cut on the lower side of the dividing partition through the preset holes of the dividing partition. S4: After the cutting is completed, the laser source is turned off, and the pusher assembly pushes the cut magnetic sheets on the upper and lower sides of the dividing partition out of the processing position.

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