Laser cutting feeding tool for neodymium iron boron magnetic materials

Abstract

The laser cutting feeding tool for the neodymium iron boron magnetic materials comprises a base, an automatic feeding mechanism and a positioning clamp, the automatic feeding mechanism and the positioning clamp are installed on the base, a discharging through hole is formed in the front side of the base, the positioning clamp is installed above the discharging through hole, and the automatic feeding mechanism comprises a transferring mechanical arm, a material frame and a material ejecting device. The material frame is detachably installed on the base, the material ejecting device is installed on one side of the material frame and used for ejecting sheets in the material frame, and the transferring mechanical arm is installed above the base and used for taking the sheets on the material frame and transferring the sheets to the positioning clamp. According to the laser cutting and feeding tool for the neodymium-iron-boron magnetic material, the structural layout is compact, the machining mode of automatic feeding and cutting is adopted, the manual operation cost is reduced, the neodymium-iron-boron magnetic material to be cut is preloaded through the detachable material frame, uninterrupted feeding and conveying are achieved, and the production efficiency is improved. According to the positioning clamp, the cutting platform of the blade structure formed by the two clamping tables is used for supporting a product, 0.2-0.5 mm of the edge of a sheet can be reserved for cutting, and the utilization rate of the sheet is effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing equipment, in particular to a laser cutting and feeding tool for NdFeB magnetic materials. Background Art

[0002] NdFeB is a third generation rare earth permanent magnet material, composed of three elements: neodymium, iron and boron. NdFeB has the advantages of high residual magnetic density, high coercive force and high magnetic energy product. It is currently widely used in electronic products, household appliances, etc. At present, the cutting of NdFeB materials with sheet structures is all done by laser cutting. However, the efficiency of laser processing tooling for NdFeB materials on the market is not high, and manual loading and waiting are required, resulting in low overall production efficiency of NdFeB materials. In addition, the fixture structure currently used is shown in the attached figure (1). The fixture is provided with a step portion (14) of about 1 mm to clamp and position the sheet (13). When laser cutting is performed, the step portion (14) needs to be avoided. Therefore, when cutting, at least 1.5 mm of space needs to be left at the edge to prevent the laser head from cutting the step portion (14). That is, the sheet (13) to be cut will have an outer frame that cannot be cut and used, which reduces the overall efficiency of the material. The utilization rate is not high, resulting in high production cost of the finished product. In addition, the current clamp structure has a hollow structure in the middle, that is, the middle position of the sheet (13) is suspended. During the cutting process, for the sheet that has been partially cut but not fully cut, since there will be air blowing during the laser cutting process, the partially cut product will be separated from the sheet (13), that is, the material will be scattered, resulting in the inability to continue cutting other parts that have not been cut. The entire sheet will be wasted, resulting in a waste of material resources, further increasing the production cost of the product. Moreover, this suspended support structure also requires different clamps to be replaced according to the sheets of different thicknesses to clamp the sheets, and the flexibility of the clamp is not enough. Summary of the invention

[0003] The purpose of the present invention is to provide a laser cutting and feeding tool for NdFeB magnetic materials to solve the technical problems in the background technology.

[0004] To achieve the aforementioned purpose, the present invention provides the following technical solutions:

[0005] A laser cutting and feeding tool for NdFeB magnetic materials comprises a base, an automatic feeding mechanism and a positioning fixture installed on the base, a blanking through hole is provided on the front side of the base, the positioning fixture is installed above the blanking through hole, the automatic feeding mechanism comprises a transfer robot, a material rack and a lifting device, the material rack is detachably mounted on the base, the lifting device is mounted on one side of the material rack for lifting the sheets in the material rack, the transfer robot is mounted above the base for taking the sheets on the material rack and transferring them to the positioning fixture; the positioning fixture comprises a first clamping platform, a second clamping platform and a first X-axis driving component, the first clamping platform is fixed on one side of the edge of the blanking hole, the second clamping platform and the first clamping platform are opposite to each other, and the first X-axis driving component is mounted on the base and is drivingly connected to the second clamping platform.

[0006] The first clamping platform includes a first base, a first tool holder and a first supporting platform installed on the first tool holder, the first tool holder is fixed on one side of the first base above the blanking hole, the first base is fixedly connected to the base, the second clamping platform includes a second base, a second tool holder and a second supporting platform installed on the second tool holder, the second tool holder is fixed in the direction of the second base close to the first clamping platform, the second base is drivingly connected to the first X-axis driving member, the first supporting platform and the second supporting platform are above the blanking hole, and the first supporting platform and the second supporting platform are spliced ​​to form a cutting platform.

[0007] The first supporting platform is composed of an array of first blades, which are vertically fixed on one side of the first tool holder and above the blanking hole. The array of first blades are fixed on the first tool holder side by side and equidistantly.

[0008] The second supporting platform is composed of an array of second blades, which are vertically fixed on one side of the second tool holder and above the blanking hole. The first blade and the second blade are staggered or contacted to form a cutting platform for supporting the product.

[0009] Slide plates are respectively disposed at the front and rear ends of the second base, and a first sliding block assembly is disposed below the slide plates and is slidably connected to the base.

[0010] The material rack includes a first baffle, a second baffle and a bottom plate, the first baffle and the second baffle are vertically installed on the right side and the rear side of the bottom plate, the first baffle and the second baffle are adjacent to each other, the first baffle, the second baffle and the bottom plate form a accommodating cavity for placing products, and the bottom plate is provided with a top material hole with an opening structure.

[0011] At least two long first adjustment holes are provided on the first baffle plate, and a first limit strip is installed on the first baffle plate. The first limit strip is installed in the vertical direction and perpendicular to the bottom plate, and screws are installed on the first limit strip to lock with the first adjustment holes. At least two long second adjustment holes are provided on the second baffle plate, and a second limit strip is installed on the second baffle plate. The second limit strip is installed in the vertical direction and perpendicular to the bottom plate, and screws are installed on the second limit strip to lock with the second adjustment holes.

[0012] A handle extending outward is installed above the second baffle, at least two support blocks are fixed on the base to match the position of the handle, and the handle is connected to the support blocks by screws.

[0013] The ejection device includes a first Z-axis driving component and an ejection plate. The first Z-axis driving component is fixed on a base. The first Z-axis driving component is drivingly connected to the ejection plate. The ejection plate is in the ejection hole.

[0014] The transfer robot includes a first Y-axis drive component, a mounting frame, a second Z-axis drive component and a suction cup, the first Y-axis drive component is mounted on a base, the mounting frame is drivingly connected to the first Y-axis drive component, the second Z-axis drive component is fixed on the mounting frame, the suction cup is drivingly connected to the second Z-axis drive component and is above the material rack, and the suction cup is provided with several vacuum nozzles.

[0015] Compared with the prior art, the laser cutting and feeding tooling of NdFeB magnetic materials of the present application has a compact structure and layout, adopts an automatic feeding and cutting processing method, reduces labor costs, and uses a detachable material rack to pre-load the NdFeB magnetic materials to be cut, which is convenient for operators to replenish products at any time and realize uninterrupted feeding and transportation. In addition, the positioning fixture uses the cutting platform of the blade structure formed by two clamping tables to support the product. The edge of the product does not need to reserve a reserved edge as large as 1.5mm, and 0.2-0.5mm can be reserved for cutting, which effectively improves the utilization rate of the sheet and greatly reduces the production cost of the product. At the same time, the cutting platform structure can also ensure that the sheet falls out of the equipment due to separation from the raw material during the cutting process, affecting the cutting quality of the sheet, thereby reducing the defective rate of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Schematic diagram of the fixture structure in the prior art;

[0017] Figure 2 : A three-dimensional structural diagram of this application;

[0018] Figure 3 : A top view of the present application;

[0019] Figure 4: Three-dimensional structural diagram of the material rack and the material ejecting device;

[0020] Figure 5 : A three-dimensional structural diagram of the material rack and the material ejecting device from another direction;

[0021] Figure 6 : Three-dimensional structure diagram of the material rack;

[0022] Figure 7 : Material rack and base installation structure diagram;

[0023] Figure 8 : Three-dimensional structure diagram of the transfer robot;

[0024] Fig. 9 : Three-dimensional structure diagram of positioning fixture;

[0025] Fig.10 : A three-dimensional structural diagram of the first clamping platform and the second clamping platform;

[0026] Fig.11 : A structural diagram of the first blade and the second blade in contact;

[0027] Fig.12 : Schematic diagram of the staggered positions of the first blade and the second blade. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Specific embodiment 1: Please refer to Figures 2 to 12 In an embodiment of the present invention, a laser cutting and feeding tool for NdFeB magnetic materials includes a base 1, an automatic feeding mechanism 2 and a positioning fixture 8 installed on the base 1, a blanking through hole is provided on the front side of the base 1, and the positioning fixture 8 is installed above the blanking through hole. The automatic feeding mechanism 2 includes a transfer robot 5, a material rack 3 and a lifting device 4. The material rack 3 is detachably installed on the base 1, and a mounting through hole 102 is provided on the base 1 for installing the material rack 3. The lifting device 4 is installed on one side of the material rack 3 for lifting the sheet 13 in the material rack 3. The transfer robot 5 is installed above the base 1 to take the sheet 13 on the material rack 3 and transfer it to the positioning fixture 8.

[0030] The positioning fixture 8 in the present application includes a first clamping platform 9, a second clamping platform 10 and a first X-axis driving component 11. The first clamping platform 9 is fixed on one side of the edge of the blanking hole 101, and the second clamping platform 10 and the first clamping platform 9 are positioned opposite to each other. The first X-axis driving component 11 is installed on the base 1 and is driven and connected to the second clamping platform 10. The first X-axis driving component 11 can adopt the existing linear module or servo motor through the transmission method of the synchronous belt. In the present application, the first X-axis driving component 11 adopts the motor through the transmission method of the synchronous belt to move the second clamping platform 10 in the X-axis direction.

[0031] The first clamping platform 9 includes a first base 901, a first tool holder 902 and a first supporting platform installed on the first tool holder 902, the first tool holder 902 is fixed on one side of the first base 901 above the blanking hole 101, the first base 901 is fixedly connected to the base 1, the second clamping platform 10 includes a second base 1001, a second tool holder 1002 and a second supporting platform installed on the second tool holder 1002, the second tool holder 1002 is fixed on the second base 1001 in a direction close to the first clamping platform 9, the second base 1001 is drivingly connected to the first X-axis driving member 11, the first supporting platform and the second supporting platform are above the blanking hole 101, and the first supporting platform and the second supporting platform are spliced ​​to form a cutting platform.

[0032] The first supporting platform is composed of an array of first blades 903, which are vertically fixed on one side of the first tool holder 902 and above the blanking hole 101. The array of first blades 903 are fixed side by side and equidistantly on the first tool holder 902. In the present application, nine groups of first blades 903 with the same structure are installed on the first tool holder 902, and the cutting edge of the first blade 903 supports the sheet 13 upward.

[0033] The second supporting platform is composed of an array of second blades 1003, which are vertically fixed on one side of the second tool holder 1002 and above the blanking hole 101. In the present application, nine groups of second blades 1003 with the same structure are installed on the second tool holder 1002. The cutting edges of the second blades 1003 face upward to support the sheet 13. The first blade 903 and the second blade 1003 are staggered or in contact with each other to form a cutting platform for supporting the product. The cutting edges of the first blade 903 and the second blade 1003 are on the same horizontal plane.

[0034] In the present application, the first blade 903 and the second blade 1003 contact each other to form a cutting platform of a blade structure for supporting the sheet 13, compared with the staggered blade structure (see Fig.12 ), the cutting table structure formed by direct contact in this embodiment can make the stroke of the second clamping table 10 shorter on the same cutting platform area, effectively saving the floor space of the equipment.

[0035] By adopting the structure of the positioning fixture 8 of the present embodiment, when the sheet 13 is laser cut, there is no need to reserve a margin greater than or equal to 1.5 mm at its edge position, and a margin of 0.2-0.5 mm can be reserved for material cutting operations. The sheet 13 is supported by the blade structure, so that the support area of ​​the sheet 13 is larger and more stable. The edge position of the sheet 13 only needs a depth of 0.5 mm to extrude the sheet 13, and there is no need to replace different fixtures according to sheets 13 of different thicknesses.

[0036] In the present application, a slide plate 12 is provided at the front and rear ends of the second base 1001 respectively, and a first slider assembly is provided under the slide plate 12 and is slidably connected to the base 1. The set slide plate 12 structure allows the second clamping platform 10 to slide on the base 1 more stably, and can achieve precise support and clamping of the sheet 13.

[0037] In the present application, the material rack 3 includes a first baffle 301, a second baffle 302 and a bottom plate 303. The first baffle 301 and the second baffle 302 are vertically installed on the right side and the rear side of the bottom plate 303. The first baffle 301 and the second baffle 302 are adjacent to each other. The first baffle 301, the second baffle 302 and the bottom plate 303 form a accommodating cavity for placing products. The bottom plate 303 is provided with a top material hole 303-1 with an opening structure.

[0038] At least two long first adjustment holes 301-1 are provided on the first baffle plate 301. In the present application, two first adjustment holes 301-1 are provided. A first limit bar 305 is installed on the first baffle plate 301. The first limit bar 305 is installed in the vertical direction and is perpendicular to the bottom plate 303. Screws are installed on the first limit bar 305 to lock with the first adjustment hole 301-1. A sensor 7 is also installed above the first baffle plate 301 to detect the material status in the material rack 3 so as to replace the material rack 3 in time.

[0039] At least two long second adjustment holes 302-1 are provided on the second baffle plate 302. In the present application, two second adjustment holes 302-1 are provided. A second limit strip 306 is installed on the second baffle plate 302. The second limit strip 306 is installed in the vertical direction and is perpendicular to the bottom plate 303. The second limit strip 306 is installed with screws to lock with the second adjustment hole 302-1. The sheet 13 to be cut is placed between the first limit strip 305 and the second limit strip 306. The positions of the first limit strip 305 and the second limit strip 306 are adjusted according to the sheets 13 of different sizes. The material rack 3 has stronger versatility.

[0040] A handle 304 extending outward is installed above the second baffle 302. At least two support blocks 6 are fixed on the base 1 to match the position of the handle 304. The handle 304 is connected to the support block 6 by screws. The handle 304 is used to facilitate the entire material rack 3 to be extracted from and put into the base 1. When the previous material rack 3 is empty, another material rack 3 can be replaced to load the sheet 13 to ensure uninterrupted operation. The handle 304 is convenient for extracting the material rack 3 and is also convenient for fixed installation with the support block 6 on the base 1 to maintain the stability of loading.

[0041] In the present application, the ejection device 4 includes a first Z-axis driving component 401 and an ejection plate 402. The first Z-axis driving component 401 is fixed on the base 1. The first Z-axis driving component 401 is driven and connected to the ejection plate 402. The ejection plate 402 is in the ejection hole 303-1. The first Z-axis driving component 401 adopts a linear module slide structure. Every time the transfer robot 5 picks up a piece of sheet 13, the first Z-axis driving component 401 drives the ejection plate 402 to move upward a certain distance to ensure that the transfer robot 5 can pick up the sheet 13 at the top of the material rack 3.

[0042] The transfer robot 5 includes a first Y-axis drive component 501, a mounting frame 502, a second Z-axis drive component 504 and a suction cup 505. The first Y-axis drive component 501 is installed on the base 1, the mounting frame 502 is driven and connected to the first Y-axis drive component 501, the second Z-axis drive component 504 is fixed on the mounting frame 502, the suction cup 505 is driven and connected to the second Z-axis drive component 504 and is above the material rack 3, and a number of vacuum nozzles are provided on the suction cup 505. A sensor 7 is installed on one side of the suction cup 505 for sensing the sheet 13 in the material rack 3 to ensure accurate adsorption of the material. The first Y-axis drive component 501 can adopt the existing linear module or servo motor through the transmission method of the synchronous belt. In the present application, the first Y-axis drive component 501 is driven by a servo motor through the transmission method of the synchronous belt, and the second Z-axis drive component 504 adopts a linear module slide structure. In the present application, the sheet 13 is loaded one by one by pushing up from the bottom and adsorbing the sheet 13 at the top of the material rack 3, which is relatively different from the loading mode of pushing directly from the bottom to the slide. However, due to the tolerance problem of the material, the sheet 13 is prone to get stuck in the slide, thereby affecting the processing efficiency of the product. The structure of the present application can be suitable for sheets 13 of different thicknesses and sizes, and there is no need to replace different push plates and other structures according to different thicknesses, thereby effectively improving the product processing efficiency.

[0043] Workflow: After manually stacking the sheets 13 on the rack 3, the rack 3 filled with sheets 13 is fixed in the mounting hole of the base 1, the transfer robot 5 moves to the top of the rack 3, and the second Z-axis drive 504 drives the suction cup 505 to move in the direction of the sheet 13. After adsorbing the sheet 13, the second Z-axis drive 504 resets, and the top plate 402 is lifted up a set distance, and the first Y-axis drive 501 transfers the suction cup 505 to between the first clamping table 9 and the second clamping table 10 of the positioning fixture 8. The second clamping table 10 moves toward the first clamping table 9 to clamp the sheet 13 between the first tool holder 902 and the second tool holder 1002, and then the sheet 13 is cut by the laser head. After cutting, the first clamping table 9 and the second clamping table 10 can be directly opened for blanking. After the suction cup 505 places the sheet 13 on the positioning fixture 8, the first Y-axis drive 501 resets and adsorbs the next sheet 13, and the operation is repeated in this cycle.

[0044] Compared with the prior art, the laser cutting and feeding tooling of NdFeB magnetic materials of the present application has a compact structure and layout, adopts an automatic feeding and cutting processing method, reduces labor costs, and uses a detachable material rack to pre-load the NdFeB magnetic materials to be cut, which is convenient for operators to replenish products at any time and realize uninterrupted feeding and transportation. In addition, the positioning fixture uses the cutting platform of the blade structure formed by two clamping tables to support the product. The edge of the product does not need to reserve a reserved edge as large as 1.5mm, and 0.2-0.5mm can be reserved for cutting, which effectively improves the utilization rate of the sheet and greatly reduces the production cost of the product. At the same time, the cutting platform structure can also ensure that the sheet falls out of the equipment due to separation from the raw material during the cutting process, affecting the cutting quality of the sheet, thereby reducing the defective rate of product production.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser cutting and feeding tool for NdFeB magnetic materials, characterized in that: It includes a base, an automatic loading mechanism and a positioning fixture installed on the base, a blanking hole is provided on the front side of the base, the positioning fixture is installed above the blanking hole, the automatic loading mechanism includes a transfer robot, a material rack and a lifting device, the material rack is detachably installed on the base, the lifting device is installed on one side of the material rack for lifting the sheets in the material rack, the transfer robot is installed above the base for taking the sheets on the material rack and transferring them to the positioning fixture; the positioning fixture includes a first clamping table, a second clamping table and a first X-axis driving component, the first clamping table is fixed on one side of the edge of the blanking hole, the second clamping table is opposite to the first clamping table, and the first X-axis driving component is installed on the base and is drivingly connected to the second clamping table.

2. The laser cutting and feeding tool for NdFeB magnetic materials according to claim 1, characterized in that: The first clamping platform includes a first base, a first tool holder and a first supporting platform installed on the first tool holder, the first tool holder is fixed on one side of the first base above the blanking hole, the first base is fixedly connected to the base, the second clamping platform includes a second base, a second tool holder and a second supporting platform installed on the second tool holder, the second tool holder is fixed in the direction of the second base close to the first clamping platform, the second base is drivingly connected to the first X-axis driving member, the first supporting platform and the second supporting platform are above the blanking hole, and the first supporting platform and the second supporting platform are spliced ​​to form a cutting platform.

3. The laser cutting and feeding tooling for NdFeB magnetic materials according to claim 2, characterized in that: The first supporting platform is composed of an array of first blades, which are vertically fixed on one side of the first tool holder and above the blanking hole. The array of first blades are fixed on the first tool holder side by side and equidistantly.

4. The laser cutting and feeding tooling for NdFeB magnetic materials according to claim 3 is characterized in that: The second supporting platform is composed of an array of second blades, which are vertically fixed on one side of the second tool holder and above the blanking hole. The first blade and the second blade are staggered or contacted to form a cutting platform for supporting the sheet.

5. The laser cutting and feeding tooling for NdFeB magnetic materials according to claim 4, characterized in that: Slide plates are respectively disposed at the front and rear ends of the second base, and a first sliding block assembly is disposed below the slide plates and is slidably connected to the base.

6. The laser cutting and feeding tool for NdFeB magnetic materials according to claim 5, characterized in that: The material rack includes a first baffle, a second baffle and a bottom plate, the first baffle and the second baffle are vertically installed on the right side and the rear side of the bottom plate, the first baffle and the second baffle are adjacent to each other, the first baffle, the second baffle and the bottom plate form a accommodating cavity for placing sheets, and the bottom plate is provided with a top material hole with an opening structure.

7. The laser cutting and feeding tooling for NdFeB magnetic materials according to claim 6, characterized in that: At least two long first adjustment holes are provided on the first baffle plate, and a first limit strip is installed on the first baffle plate. The first limit strip is installed in the vertical direction and perpendicular to the bottom plate, and screws are installed on the first limit strip to lock with the first adjustment holes. At least two long second adjustment holes are provided on the second baffle plate, and a second limit strip is installed on the second baffle plate. The second limit strip is installed in the vertical direction and perpendicular to the bottom plate, and screws are installed on the second limit strip to lock with the second adjustment holes.

8. The laser cutting and feeding tooling for NdFeB magnetic materials according to claim 7, characterized in that: A handle extending outward is installed above the second baffle, at least two support blocks are fixed on the base to match the position of the handle, and the handle is connected to the support blocks by screws.

9. The laser cutting and feeding tool for NdFeB magnetic materials according to claim 8, characterized in that: The ejection device includes a first Z-axis driving component and an ejection plate. The first Z-axis driving component is fixed on a base. The first Z-axis driving component is drivingly connected to the ejection plate. The ejection plate is in the ejection hole.

10. The laser cutting and feeding tool for NdFeB magnetic materials according to claim 9, characterized in that: The transfer robot includes a first Y-axis drive component, a mounting frame, a second Z-axis drive component and a suction cup, the first Y-axis drive component is mounted on a base, the mounting frame is drivingly connected to the first Y-axis drive component, the second Z-axis drive component is fixed on the mounting frame, the suction cup is drivingly connected to the second Z-axis drive component and is above the material rack, and the suction cup is provided with several vacuum nozzles.

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