Bin exchange device for large laser selective melting equipment

Abstract

The invention discloses a bin exchange device for large-scale laser selective melting equipment, comprising a main bin for printing workpieces, an exchange bin for exchanging bins, and a powder taking bin for clearing powder and taking parts, wherein a bin I for placing workpieces is arranged in the main bin, and a bin II for replacing bin I is arranged in the exchange bin; after printing is completed, bin I carrying the workpiece is driven by the main bin to be pushed into the exchange bin, and bin II is driven by the exchange bin to be pushed into the main bin and start the next printing, and bin I is then pushed from the exchange bin into the powder taking bin to take parts and then pushed back to the exchange bin; the bin exchange device for large-scale laser selective melting equipment disclosed by the invention can realize printing, bin exchange and taking parts in an independent space by simultaneously arranging the main bin, the exchange bin and the powder taking bin, so that the work of each part does not interfere with each other, thereby shortening the period of taking parts and clearing powder; multiple bins are alternately used in a circular manner, thereby improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of 3D printing equipment and relates to a bin exchange device for large-scale laser selective melting equipment. Background Art

[0002] The laser selective melting equipment mainly focuses the laser beam onto the forming plane and controls the scanning galvanometer to move at a certain rate and path, so that the metal powder in the scanning area is quickly melted and solidified to form a solid body, and finally realizes the processing of complex three-dimensional structures by accumulating layer by layer. Usually, large-scale laser selective melting forming equipment is mainly composed of several core parts: main machine warehouse, optical system, powder laying system, gas circulation purification system, computer control system and other auxiliary devices. In order to improve the utilization rate of large-scale laser selective melting forming equipment, the main machine warehouse is usually designed as an exchangeable warehouse. After the workpiece is printed, the main machine warehouse is automatically exchanged through the warehouse exchange mechanism for reprinting.

[0003] At present, after the workpiece of large-scale laser selective melting molding equipment is printed, the main machine bin is moved to the powder cleaning position for fine powder. After the powder cleaning is completed, the workpiece is taken out by the overhead crane. The powder cleaning cycle is long and the equipment utilization rate is low. Since the workpiece printing needs to be carried out under the protection of inert gas, the inert environment in the main machine bin is easily destroyed when the workpiece is taken out. The workpiece printing needs to establish an inert environment again, which takes a long time.

[0004] In order to solve the above problems, a bin exchange device for large-scale laser selective melting equipment is needed. Summary of the invention

[0005] In view of this, the present invention discloses a bin exchange device for large-scale laser selective melting equipment. By simultaneously arranging a main bin, an exchange bin and a powder collection bin, printing, bin changing and piece removal can all be achieved in an independent space, and the work of each part does not interfere with each other, thus shortening the cycle of piece removal and powder cleaning, and avoiding damage to the inert environment of the main bin, effectively shortening the printing time, improving work efficiency and reducing work costs.

[0006] A bin exchange device for large-scale laser selective melting equipment comprises a main bin for printing workpieces, an exchange bin for exchanging bins and a powder taking bin for clearing powder and taking parts, which are arranged in sequence according to a working order. The main bin is provided with a bin body I for placing workpieces, and the exchange bin is provided with a bin body II for replacing bin body I. After printing is completed, bin body I carrying the workpiece is driven by the main bin to be pushed into the exchange bin, and bin body II is driven by the exchange bin to be pushed into the main bin and start the next printing, and bin body I is then pushed from the exchange bin into the powder taking bin to take parts and then pushed back to the exchange bin. By setting up multiple chambers and setting up two chamber bodies to rotate between the chambers, printing and picking up and cleaning powder can be carried out at the same time. Each chamber is relatively independent, which effectively ensures that the inert environment in the main chamber is not destroyed. There is no need to re-establish the inert environment, which saves costs, shortens the printing cycle, and improves printing efficiency. It should be noted that the only difference between chamber body I and chamber body II is their initial positions. Their functions are to carry and transport workpieces, and they can be used interchangeably. This is understandable to technicians in this technical field and will not be elaborated here.

[0007] Furthermore, it also includes a slide plate I and a slide plate II. The exchange bin is provided with an exchange position, a printing waiting position and a material taking waiting position. The slide plate I is installed at the exchange position in a manner that it can be driven to slide back and forth between the exchange position and the material taking waiting position; the slide plate II is installed at the printing waiting position in a manner that it can be driven to slide back and forth between the exchange position and the printing waiting position. The slide plate is provided to carry the bin body I and the bin body II and to improve the efficiency of the bin body exchange.

[0008] Furthermore, a sealing door I for isolating the main bin and the exchange bin is provided at the connection position between the main bin and the exchange bin, and a sealing door II for isolating the powder bin and the exchange bin is provided at the connection position between the powder bin and the exchange bin. The sealing door is provided to form a relatively independent enclosed space between each cylinder chamber, and further to ensure that the inert environment of the main bin is not destroyed as much as possible.

[0009] Furthermore, the printing waiting position, the exchange position and the material taking waiting position are sequentially arranged in the exchange bin along the length direction of the exchange bin, and the exchange bin is arranged at a position between the main bin and the powder taking bin in such a way that the exchange position is aligned with the main bin and the powder taking bin respectively. That is, the exchange position is arranged on the same axis as the main bin and the powder taking bin, and the printing waiting position and the material taking waiting position are arranged on both sides of the line connecting the main bin and the powder taking bin, so that the main bin, the exchange bin and the powder taking bin are arranged in a cross structure. The bin changing efficiency is higher with this structure, and the bin changing steps are also simpler.

[0010] Furthermore, the bottom surface of the exchange bin is provided with a slide rail along the length direction, and the bottoms of the slide plates I and II are provided with slide sliders, and the slide plates I and II are installed in the exchange bin in a manner that they can be driven to slide along the slide rails. The provision of the slide rails and sliders can make the slides of the slide plates I and II smoother, thereby improving the continuity of the bin-changing action and improving the bin-changing efficiency.

[0011] Furthermore, the main bin is provided with a driving rod I for pushing bin body I or bin body II out or pulling it into the main bin, and the powder taking bin is provided with a driving rod II for pushing bin body I or bin body II out or pulling it into the powder taking bin; when printing is completed, the sealing door I is opened, and the driving rod I pushes bin body I carrying the printed workpiece from the main bin to the slide plate I at the exchange position, and the slide plate I is driven to slide from the exchange position to the material taking waiting position, and after the slide plate II carrying bin body II is driven to slide from the printing waiting position to the exchange position, bin body II is driven by the driving rod Ⅰ pulls the main machine bin into the main machine bin, the sealing door Ⅰ closes and starts printing the workpiece, and the slide plate Ⅱ slides back from the exchange position to the printing waiting position; the sealing door Ⅱ opens immediately, and the slide plate Ⅰ is driven to slide from the material taking waiting position to the exchange position, and the driving rod Ⅱ pulls the bin body Ⅰ into the material taking bin, and then the slide plate Ⅰ slides to the material taking waiting position, and the slide plate Ⅱ slides to the exchange position, and the bin body Ⅰ is pushed out to the slide plate Ⅱ by the driving rod Ⅱ after the powder is cleared and the material is taken in the material taking bin, and the slide plate Ⅱ carries the bin body Ⅰ and is driven to slide from the exchange position to the printing waiting position, and the slide plate Ⅰ slides back to the exchange position to wait for the next round of printing. The driving rod Ⅰ and the driving rod Ⅱ can adopt driving components such as electric push rods, pneumatic push rods or hydraulic push rods, and the driving rod and the bin body can be connected or separated by pneumatic locking, electric claw grasping or electromagnet attraction. This is the application of the prior art here, and it will not be repeated here.

[0012] Furthermore, the exchange bin is also provided with a driving source I for driving the slide plate I to slide and a driving source II for driving the slide plate II to slide. The driving source I is arranged at the exchange position and is located below the slide plate I, and the driving source II is arranged at the exchange position and is located below the slide plate II. The driving source I and the driving source II can be driving components such as electric push rods, pneumatic push rods or hydraulic push rods. In the technical solution of the present invention, the driving source I and the driving source II are fixedly arranged, and the driving end of the driving source realizes the sliding of the slide plate by pushing and pulling. This arrangement can also effectively control the sliding stroke of the slide plate, making the parked position of the slide plate more accurate.

[0013] Furthermore, the bottom surfaces of the main warehouse, powder taking warehouse, slide plate I and slide plate II are all provided with warehouse body slide rails. When the slide plate I or slide plate II is located at the exchange position, the warehouse body slide rails of the slide plate I or the warehouse body slide rails of the slide plate II are aligned with the warehouse body slide rails of the main warehouse and the warehouse body slide rails of the powder taking warehouse. The bottoms of the warehouse bodies I and II are both provided with warehouse body sliders that match the warehouse body slide rails. The warehouse bodies I and II can be driven to slide back and forth along the warehouse body slide rails in the main warehouse, powder taking warehouse and exchange warehouse. That is, when slide plate I is located at the exchange position, the warehouse body slide rails of the main warehouse, powder taking warehouse and slide plate I are aligned with each other and located on the same axis; similarly, when slide plate II is located at the exchange position, the warehouse body slide rails of the main warehouse, powder taking warehouse and slide plate II are aligned with each other and located on the same axis. When the warehouse body slides along the warehouse body slide rails, it is equivalent to sliding along one slide rail. The warehouse bodies I and II can slide smoothly and continuously between the main warehouse, powder taking warehouse and exchange warehouse.

[0014] Furthermore, the main bin, powder bin, slide plate I and slide plate II are all provided with guide rails for guiding. When the slide plate I or slide plate II is located at the exchange position, the guide rail of the slide plate I or the guide rail of the slide plate II is aligned with the guide rail of the main bin and the guide rail of the powder bin, and the bin body I and bin body II can be driven to slide back and forth along the guide rails in the main bin, powder bin and exchange bin. When slide plate I is located at the exchange position, the guide rail of slide plate I is aligned with the guide rail of the main bin and the guide rail of the powder bin, and the guide rails of the three are equivalent to one guide rail; similarly, when slide plate II is located at the exchange position, the guide rail of slide plate II is aligned with the guide rail of the main bin and the guide rail of the powder bin, and the guide rails of the three are equivalent to one guide rail; such a setting can further improve the smoothness of the sliding of bin body I and bin body II, and avoid position deviation during the sliding process.

[0015] Furthermore, a substrate for workpiece printing is provided in the warehouse body I and the warehouse body II. When the warehouse body I or the warehouse body II is located in the host warehouse, the printing device in the host warehouse prints the workpiece on the substrate. The setting of the printing substrate is to improve the quality of the finished product of the workpiece printing and avoid the workpiece becoming defective due to the change of the reference, which causes waste.

[0016] Beneficial effects of the present invention:

[0017] The present invention discloses a bin exchange device for large-scale laser selective melting equipment. By simultaneously arranging a main bin, an exchange bin and a powder taking bin, printing, bin changing and part taking can all be achieved in an independent space, and the work of each part does not interfere with each other, thereby shortening the period of part taking and powder cleaning; multiple bins are alternately used in a circular manner, thereby improving work efficiency; the arrangement of multiple sealing doors improves the sealing of each bin and avoids the destruction of the inert environment of the main bin, thereby effectively shortening the printing time, improving work efficiency and reducing work costs; sliding rails and guide rails are designed in multiple places, thereby making the sliding of the slide plate and the bin body more coherent and smooth, thereby indirectly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 A top view of the present invention;

[0020] Figure 3 It is a front perspective view of the present invention;

[0021] Figure 4 It is a left perspective view of the present invention;

[0022] Figure 5 A top perspective view of the present invention;

[0023] Figure 6 for Figure 3 A partial enlarged view of the middle A;

[0024] Figure 7 for Figure 4 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0025] Figure 1 It is a front view of the present invention; Figure 2 A top view of the present invention; Figure 3 It is a front perspective view of the present invention; Figure 4 It is a left perspective view of the present invention; Figure 5 A top perspective view of the present invention; Figure 6 for Figure 3 A partial enlarged view of the middle A; Figure 7 for Figure 4 It should be noted that in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] As shown in the figure, a bin exchange device for large laser selective melting equipment includes a main bin 1 for printing workpieces, an exchange bin 2 for exchanging bins, and a powder bin 3 for cleaning powder and taking parts, which are arranged in sequence according to the working order. The working order here is printing first, then changing bins, and finally taking parts. In this embodiment, a sealing door I6 for isolating the main bin 1 from the exchange bin 2 is provided at the connection position of the main bin 1 and the exchange bin 2, and a sealing door II7 for isolating the powder bin 3 from the exchange bin 2 is provided at the connection position of the powder bin 3 and the exchange bin 2. The setting of the sealing door is to form a relatively independent closed space between each cylinder chamber, and further to ensure that the inert environment of the main bin 1 is not destroyed as much as possible. The host warehouse 1 is provided with a warehouse body Ⅰ8 for placing workpieces, and the exchange warehouse 2 is provided with a warehouse body Ⅱ9 for replacing warehouse body Ⅰ8; warehouse body Ⅰ8 and warehouse body Ⅱ9 are provided with substrates for printing workpieces; when warehouse body Ⅰ8 or warehouse body Ⅱ9 is located in the host warehouse 1, the printing device in the host warehouse 1 prints the workpiece on the substrate. The setting of the printing substrate is to improve the quality of the finished product printed by the workpiece and avoid the workpiece becoming defective due to the change of the reference, which causes waste. After the printing is completed, warehouse body Ⅰ8 carrying the workpiece is driven by the host warehouse 1 to push into the exchange warehouse 2, and warehouse body Ⅱ9 is driven by the exchange warehouse 2 to push into the host warehouse 1 and start the next printing. Warehouse body Ⅰ8 is then pushed from the exchange warehouse 2 into the powder collection warehouse 3 to take the workpiece and then pushed back to the exchange warehouse 2 to wait for the next round of printing. By setting up multiple chambers and setting up two chamber bodies to rotate between the chambers, printing and picking up and cleaning powder can be carried out at the same time. Each chamber is relatively independent, which effectively ensures that the inert environment in the main chamber 1 is not destroyed. There is no need to re-establish the inert environment, which saves costs, shortens the printing cycle, and improves printing efficiency. It should be noted that the chamber body I8 and the chamber body II9 are only set in different initial positions. Their function is to carry and transport workpieces. They can be used interchangeably. This is understandable to technicians in this technical field and will not be repeated here.

[0027] In this embodiment, a slide plate Ⅰ12 and a slide plate Ⅱ13 are also included. The exchange bin 2 is provided with an exchange position 201, a printing waiting position 202 and a material taking waiting position 203. The slide plate Ⅰ12 is installed at the exchange position 201 in a manner that can be driven to slide back and forth between the exchange position 201 and the material taking waiting position 203; the slide plate Ⅱ13 is installed at the printing waiting position 202 in a manner that can be driven to slide back and forth between the exchange position 201 and the printing waiting position 202. The slide plate is provided to carry the bin body Ⅰ8 and the bin body Ⅱ9 and to improve the efficiency of the bin body exchange.

[0028] In this embodiment, the printing waiting position 202, the exchange position 201 and the material taking waiting position 203 are sequentially arranged in the exchange bin 2 along the length direction of the exchange bin 2, and the exchange bin 2 is arranged at a position between the main bin 1 and the powder taking bin 3 in a manner that the exchange position 201 is aligned with the main bin 1 and the powder taking bin 3 respectively. That is, the exchange position 201 is arranged on the same axis as the main bin 1 and the powder taking bin 3, and the printing waiting position 202 and the material taking waiting position 203 are arranged on both sides of the line connecting the main bin 1 and the powder taking bin 3, so that the main bin 1, the exchange bin 2 and the powder taking bin 3 are arranged in a cross structure. The bin changing efficiency is higher with this structure, and the bin changing steps are also simpler, such as Figure 2 and Figure 5 The length direction here is the Figure 2 and attached Figure 5 The up and down directions in the middle, the axial direction is attached Figure 2 and attached Figure 5 The horizontal direction, that is, the left-right direction, is for the convenience of describing the present invention but is not limiting. This is understandable to those skilled in the art and will not be described in detail here.

[0029] In this embodiment, a slide rail 14 is provided on the bottom surface of the exchange bin 2 along the length direction, and a slide block 17 is provided at the bottom of each of the slides I 12 and II 13. Both the slides I 12 and II 13 are installed in the exchange bin 2 in a manner that they can be driven to slide along the slide rail 14. The provision of the rails and the blocks can make the sliding of the slides I 12 and II 13 smoother, so as to improve the continuity of the bin changing action and improve the bin changing efficiency. The slide block 17 in this embodiment is a "C"-shaped structure, which is clamped on the slide rail 14. The slide rail 14 and the slide block 17 of this embodiment are provided with two parallel groups, such as Figure 6 As shown, setting two supports at the same time is more stable.

[0030] In this embodiment, the main warehouse 1 is provided with a driving rod Ⅰ10 for pushing out or pulling the warehouse body Ⅰ8 or the warehouse body Ⅱ9 into the main warehouse 1, and the powder warehouse 3 is provided with a driving rod Ⅱ11 for pushing out or pulling the warehouse body Ⅰ8 or the warehouse body Ⅱ9 into the powder warehouse 3; in this embodiment, one group of driving rods Ⅰ10 is provided, and two groups of driving rods Ⅱ11 are provided. The driving rods Ⅰ10 and Ⅱ11 can adopt electric push rods, and the front ends of the push rods of the driving rods Ⅰ10 and Ⅱ11 are provided with pneumatic locking devices. The connection or separation between the driving rods and the warehouse body is achieved by pneumatic locking. This is the application of the prior art here and will not be repeated here.

[0031] In this embodiment, the exchange bin 2 is further provided with a driving source I4 for driving the slide plate I12 to slide and a driving source II5 for driving the slide plate II13 to slide. The driving source I4 is arranged at the exchange position 201 and is located below the slide plate I12. The driving source II5 is arranged at the exchange position 201 and is located below the slide plate II13. The driving source I4 and the driving source II5 can be pneumatic push rods. In the technical solution of the present invention, the driving source I4 and the driving source II5 are fixedly arranged. The driving end of the pneumatic push rod is fixedly connected to the bottom of the slide plate. The driving end of the driving source realizes the sliding of the slide plate by pushing and pulling. This arrangement can also effectively control the sliding stroke of the slide plate, making the stop position of the slide plate more accurate.

[0032] In this embodiment, the bottom surfaces of the main warehouse 1, the powder taking warehouse 3, the slide plate I 12 and the slide plate II 13 are all provided with warehouse body slide rails 18. When the slide plate I 12 or the slide plate II 13 is located at the exchange position 201, the warehouse body slide rails 18 of the slide plate I 12 or the warehouse body slide rails 18 of the slide plate II 13 are aligned with the warehouse body slide rails 18 of the main warehouse 1 and the warehouse body slide rails 18 of the powder taking warehouse 3. The bottoms of the warehouse bodies I 8 and II 9 are both provided with warehouse body sliders 15 that cooperate with the warehouse body slide rails 18. The warehouse bodies I 8 and II 9 can be driven to slide back and forth along the warehouse body slide rails 18 in the main warehouse 1, the powder taking warehouse 3 and the exchange warehouse 2. That is, when the slide plate Ⅰ12 is located at the exchange position 201, the main warehouse 1, the powder taking warehouse 3 and the warehouse body slide rails 18 of the slide plate Ⅰ12 are aligned with each other and located on the same axis; similarly, when the slide plate Ⅱ13 is located at the exchange position 201, the main warehouse 1, the powder taking warehouse 3 and the warehouse body slide rails 18 of the slide plate Ⅱ13 are aligned with each other and located on the same axis. When the warehouse body slides along the warehouse body slide rail 18, it is equivalent to sliding along one slide rail. The warehouse body Ⅰ8 and the warehouse body Ⅱ9 can slide smoothly and continuously between the main warehouse 1, the powder taking warehouse 3 and the exchange warehouse 2. Figure 7 As shown, the structure of the bin body slide rail 18 and the bin body slider 15 is further explained by taking the skateboard II 13 and the bin body II 9 as examples. The bin body slide rail 18 is formed by extending the bottom surface of the skateboard II 13 upward in the vertical direction, and its cross-section is rectangular; and the bin body slider 15 is a ball sliding block, and two are arranged at the position of each bin body slide rail 18. The two ball sliding blocks are respectively arranged on the top surface and the outer position of the bin body slide rail 18, so that a limit to the bin body slide rail 18 can be formed. The main bin 1, the powder bin 3, the skateboard I 12 and the skateboard II 13 are each provided with two bin body slide rails 18, and the bin body sliders 15 are arranged in groups of four, and two correspond to one bin body slide rail 18. The bin body sliders 15 can be arranged in multiple groups along the sliding direction of the bin body according to the size of the bin body, but at least two groups are required to ensure the stability of sliding, which can be understood by technicians in this technical field and will not be repeated here.

[0033] In this embodiment, the main warehouse 1, powder taking warehouse 3, slide plate Ⅰ12 and slide plate Ⅱ13 are all provided with guide rails 16 for guiding. When the slide plate Ⅰ12 or slide plate Ⅱ13 is located at the exchange position 201, the guide rail 16 of the slide plate Ⅰ12 or the guide rail 16 of the slide plate Ⅱ13 is aligned with the guide rail 16 of the main warehouse 1 and the guide rail 16 of the powder taking warehouse 3, and the warehouse body Ⅰ8 and the warehouse body Ⅱ9 can be driven to slide back and forth along the guide rail 16 in the main warehouse 1, the powder taking warehouse 3 and the exchange warehouse 2. Figure 4 As shown, guide rails 16 are provided on the upper and middle parts of the main bin 1, the powder bin 3, the slide plate Ⅰ12 and the slide plate Ⅱ13, wherein two guide rails 16 are provided on the upper part and two guide rails 16 are provided in the middle part, that is, four guide rails 16 are provided in each of the main bin 1, the powder bin 3, the slide plate Ⅰ12 and the slide plate Ⅱ13. The guide rails 16 are provided to further improve the smoothness of the sliding of the bin body Ⅰ8 and the bin body Ⅱ9 to avoid position deviation during the sliding process.

[0034] The specific working steps of the present invention are as follows:

[0035] In the initial state, the slide plate Ⅰ12 is located at the exchange position 201, the slide plate Ⅱ13 is located at the printing waiting position 202, the warehouse body Ⅰ8 is located in the main warehouse 1, and the warehouse body Ⅱ9 is located on the slide plate Ⅱ13 of the printing waiting position 202, and the printing device in the main warehouse 1 carries out the workpiece printing work on the substrate of the warehouse body Ⅰ8; when printing is completed, the sealing door Ⅰ6 is opened, and the driving rod Ⅰ10 pushes the warehouse body Ⅰ8 carrying the printed workpiece from the main warehouse 1 to the slide plate Ⅰ12 of the exchange position 201, and the slide plate Ⅰ12 is driven to slide from the exchange position 201 to the material taking waiting position 203, and after the slide plate Ⅱ13 carrying the warehouse body Ⅱ9 is driven to slide from the printing waiting position 202 to the exchange position 201, the warehouse body Ⅱ9 is driven The movable rod Ⅰ10 is pulled into the main machine bin 1, the sealing door Ⅰ6 is closed and the workpiece is printed, and the slide plate Ⅱ13 slides back from the exchange position 201 to the printing waiting position 202; the sealing door Ⅱ7 is opened immediately, and the slide plate Ⅰ12 is driven to slide from the material taking waiting position 203 to the exchange position 201, and the driving rod Ⅱ11 pulls the bin body Ⅰ8 into the material taking bin, and then the slide plate Ⅰ12 slides to the material taking waiting position 203, and the slide plate Ⅱ13 slides to the exchange position 201. After the bin body Ⅰ8 is cleaned and the material is taken in the material taking bin, it is pushed out to the slide plate Ⅱ13 by the driving rod Ⅱ11, and the slide plate Ⅱ13 carries the bin body Ⅰ8 and is driven to slide from the exchange position 201 to the printing waiting position 202, and the slide plate Ⅰ12 slides back to the exchange position 201 to wait for the next round of printing. Repeating the above steps continuously can realize the continuous printing of the workpiece, effectively improving the printing efficiency and reducing the printing cost.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A bin exchange device for large-scale laser selective melting equipment, characterized in that: It includes a main bin for printing workpieces, an exchange bin for exchanging bins, and a powder bin for cleaning powder and taking out parts, which are arranged in sequence according to the working order. The main bin is provided with a bin body I for placing workpieces, and the exchange bin is provided with a bin body II for replacing the bin body I. After printing is completed, the bin body I carrying the workpiece is driven from the main bin into the exchange bin, and the bin body II is driven from the exchange bin into the main bin to start the next printing, and the bin body I is then pushed from the exchange bin into the powder bin to take the workpiece and then pushed back to the exchange bin; It also includes a slide plate I and a slide plate II. The exchange bin is provided with an exchange position, a printing waiting position and a material taking waiting position. The slide plate I is installed at the exchange position in a manner that can be driven to slide back and forth between the exchange position and the material taking waiting position; the slide plate II is installed at the printing waiting position in a manner that can be driven to slide back and forth between the exchange position and the printing waiting position; A sealing door I for isolating the main bin and the exchange bin is provided at the connection position between the main bin and the exchange bin, and a sealing door II for isolating the powder bin and the exchange bin is provided at the connection position between the powder bin and the exchange bin; The bottom surfaces of the main warehouse, powder taking warehouse, slide plate I and slide plate II are all provided with warehouse body slide rails. When the slide plate I or slide plate II is located at the exchange position, the warehouse body slide rail of the slide plate I or the warehouse body slide rail of the slide plate II is aligned with the warehouse body slide rail of the main warehouse and the warehouse body slide rail of the powder taking warehouse. The bottoms of the warehouse bodies I and II are both provided with warehouse body sliders that match the warehouse body slide rails. The warehouse bodies I and II can be driven to slide back and forth along the warehouse body slide rails in the main warehouse, powder taking warehouse and exchange warehouse; The main bin, powder bin, slide plate I and slide plate II are all provided with guide rails for guidance. When slide plate I or slide plate II is located in the exchange position, the guide rail of slide plate I or the guide rail of slide plate II is aligned with the guide rail of the main bin and the guide rail of the powder bin, and the bin body I and bin body II can be driven to slide reciprocatingly along the guide rails in the main bin, powder bin and exchange bin.

2. The bin exchange device for large-scale laser selective melting equipment according to claim 1, characterized in that: The printing waiting position, the exchange position and the material collection waiting position are sequentially arranged in the exchange bin along the length direction of the exchange bin, and the exchange bin is arranged at a position between the main bin and the powder collection bin in such a way that the exchange position is aligned with the main bin and the powder collection bin respectively.

3. The bin exchange device for large-scale laser selective melting equipment according to claim 1, characterized in that: The bottom surface of the exchange bin is provided with a skateboard rail along the length direction, and the bottoms of the skateboards I and II are provided with skateboard sliders, and the skateboards I and II are installed in the exchange bin in a manner that they can be driven to slide along the skateboard rails.

4. The bin exchange device for large-scale laser selective melting equipment according to claim 1, characterized in that: The main bin is provided with a driving rod I for pushing bin body I or bin body II out or pulling it into the main bin, and the powder taking bin is provided with a driving rod II for pushing bin body I or bin body II out or pulling it into the powder taking bin; when printing is completed, the sealing door I is opened, and the driving rod I pushes bin body I carrying the printed workpiece from the main bin to the slide plate I at the exchange position, and the slide plate I is driven to slide from the exchange position to the material taking waiting position, and after the slide plate II carrying bin body II is driven to slide from the printing waiting position to the exchange position, bin body II is pulled by the driving rod I Enter the main machine bin, the sealing door I is closed and the workpiece starts to be printed, and the slide plate II slides back from the exchange position to the printing waiting position; the sealing door II is immediately opened, and the slide plate I is driven to slide from the material taking waiting position to the exchange position, and after the driving rod II pulls the bin body I into the material taking bin, the slide plate I slides to the material taking waiting position, and the slide plate II slides to the exchange position, and the bin body I is pushed out to the slide plate II by the driving rod II after cleaning the powder and taking the material in the material taking bin, and the slide plate II carries the bin body I and is driven to slide from the exchange position to the printing waiting position, and the slide plate I slides back to the exchange position to wait for the next round of printing.

5. The bin exchange device for large-scale laser selective melting equipment according to claim 4, characterized in that: The exchange bin is also provided with a driving source I for driving the slide plate I to slide and a driving source II for driving the slide plate II to slide. The driving source I is arranged at the exchange position and is located below the slide plate I, and the driving source II is arranged at the exchange position and is located below the slide plate II.

6. The bin exchange device for large-scale laser selective melting equipment according to claim 1, characterized in that: The chamber body I and the chamber body II are provided with a substrate for printing a workpiece.

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