Desktop type laser additive manufacturing printer device

Abstract

The utility model discloses a desktop type laser additive manufacturing printer device which comprises a rack, a positioning system, a clamping device, a laser head, a forming system and a powder laying system, and the positioning system comprises a first motor, a second motor, a y-axis guide rail and two x-axis guide rails. According to the positioning system, the motor is adopted for driving to achieve X-axis and Y-axis bidirectional movement of the laser head, compared with a galvanometer, the motor plane transmission positioning mode can reduce the cost of the positioning system under the condition that the benchmarking position accuracy is not reduced, and then the overall cost of the laser additive manufacturing printer device is reduced; besides, the positioning system, the clamping device, the laser head, the forming system, the powder spreading system and the like are integrated on the rack, the overall size of the printer device can be reduced, the size of the printer device is prevented from being too large, and the application range of the printer device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, in particular to a desktop laser additive manufacturing printer device. Background Art

[0002] Additive manufacturing technology, also known as 3D printing technology, is a technology that uses digital model files as the basis, uses adhesive materials such as powder plastics, and constructs entities by printing layer by layer. Among them, Selective Laser Melting (SLM) is the most widely used 3D printing technology in metal additive manufacturing. It uses laser beam as the energy source, slices according to the model of three-dimensional drawing software (such as CAD, Solidworks), and scans layer by layer according to the path planned in the slice model, quickly melts and solidifies the metal powder, and finally obtains metal products with good mechanical properties.

[0003] Most of the existing SLM printers use a laser head and a galvanometer device as a positioning system to cooperate with each other for marking and forming. Although optical instruments such as galvanometers have the characteristics of high precision, good stability, and strong focusing ability, their galvanometer pieces are expensive, resulting in excessively high costs for the printer device. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a desktop laser additive manufacturing printer device that can solve the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a desktop laser additive manufacturing printer device, comprising: a frame, a positioning system, a clamping device, a laser head, a molding system and a powder spreading system; the positioning system comprises a first motor, a second motor, a y-axis guide rail and two x-axis guide rails, the two x-axis guide rails are respectively arranged on both sides of the top of the frame, the two x-axis guide rails are respectively provided with a first slider, the first motor is connected to the first slider, the two ends of the y-axis guide rail are respectively connected to the two first sliders, the y-axis guide rail is provided with a second slider, the second motor is connected to the second slider, the clamping device is arranged on the second slider, and the laser head is arranged on the clamping device; the molding system is arranged on the frame and is located below the laser head, and the powder spreading system is arranged on the molding system.

[0008] Preferably, the clamping device is a fixing block obtained by 3D printing.

[0009] Preferably, the molding system includes a molding cylinder and a powder cylinder arranged adjacent to each other, and an embedding device is provided in the molding cylinder. The embedding device includes a molding piston, a third motor, a light rod and a screw rod. The upper end of the screw rod is connected to the molding piston, the lower end of the screw rod is connected to the third motor, and the molding piston is also connected to the light rod.

[0010] Preferably, the lower end of the lead screw is connected to the third motor via a coupling; and the number of the bare rods is three.

[0011] Preferably, the molded piston is square.

[0012] Preferably, the powder spreading system includes a powder spreading platform, two slide rails, a fourth motor and a baffle. The powder spreading platform is arranged on the top of the molding system, the two slide rails are respectively arranged on both sides of the length direction of the powder spreading platform, the two ends of the baffle are slidably arranged on the two slide rails, and the fourth motor is connected to the end of the baffle.

[0013] Preferably, belt clamping devices are provided at both ends of the baffle, the number of the fourth motors is two, and the fourth motors are connected to the belt clamping devices via belts.

[0014] Preferably, the powder spreading system further comprises a cylindrical rubber rod, which is arranged at the bottom of the baffle.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a desktop laser additive manufacturing printer device, which has the following beneficial effects: the positioning system of the present invention is driven by a motor to realize the XY-axis bidirectional movement of the laser head. Compared with the galvanometer, the motor plane transmission positioning method of the present invention can reduce the cost of the positioning system without reducing the accuracy of the alignment position, thereby reducing the overall cost of the laser additive manufacturing printer device; in addition, the positioning system, clamping device, laser head, molding system, powder spreading system, etc. of the present invention are integrated on a frame, which can streamline the overall volume of the printer device, avoid the excessive size of the printer device, and improve the scope of application of the printer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a desktop laser additive manufacturing printer device of the utility model;

[0018] Figure 2 A three-dimensional diagram of the positioning system and the laser head of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the molding system and the powder spreading system of the utility model;

[0020] Figure 4 It is a first stereoscopic view of the powder spreading system of the utility model;

[0021] Figure 5 It is a second stereoscopic view of the powder spreading system of the utility model;

[0022] Figure 6 This is an internal structure diagram of the molding system of the present utility model.

[0023] The numbers in the figure are: 1 frame, 2 positioning system, 3 clamping device, 4 laser head, 5 molding system, 6 powder spreading system, 7y-axis guide rail, 8x-axis guide rail, 9 first slider, 10 molding cylinder, 11 powder cylinder, 12 embedding device, 13 molding piston, 14 third motor, 15 polished rod, 16 lead screw, 17 powder spreading platform, 18 slide rail, 19 fourth motor, 20 baffle, 21 belt clamping device, 22 belt, 23 cylindrical rubber rod, 24 connecting block, 25 powder piston, 26 set screw, 27 third slider. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a desktop laser additive manufacturing printer device, comprising: a frame 1, a positioning system 2, a clamping device 3, a laser head 4, a molding system 5 and a powder spreading system 6. The positioning system 2 comprises a first motor, a second motor, a y-axis guide rail 7 and two x-axis guide rails 8, the two x-axis guide rails 8 are respectively arranged on both sides of the top of the frame 1, a first slider 9 is arranged on the two x-axis guide rails 8, the first motor is connected to the first slider 9, the two ends of the y-axis guide rail 7 are respectively connected to the two first sliders 9, a second slider is arranged on the y-axis guide rail 7, the second motor is connected to the second slider, the clamping device 3 is arranged on the second slider, and the laser head 4 is arranged on the clamping device 3.

[0026] Specifically, one of the first sliders 9 may be provided with a belt clamping device, and the first motor further drives the first slider 9 to move along the x-axis guide rail 8 through the belt, that is, the movement of the y-axis guide rail 7 is realized synchronously; in addition, both ends of the y-axis guide rail 7 may be connected to the first slider 9 through the connecting block 24, and the second motor is arranged on the connecting block 24, and the second motor may also drive the second slider to move along the y-axis guide rail 7 through the belt; in addition, the first motor may also drive the first slider 9 to move through other structures such as a screw rod, and no excessive restrictions are made here. It can be understood that the laser head 4 can realize the XY axis bidirectional movement by driving the first slider 9 to move and the second motor to drive the second slider to move, that is, the positioning of the laser head 4 is realized, so that the laser head 4 can be moved to a preset position for laser printing.

[0027] In addition, the molding system 5 is arranged on the frame 1 and is located below the laser head 4, the powder spreading system 6 is arranged on the molding system 5, the powder spreading system 6 is used to spread the powder on the molding system 5, and the laser head 4 is used to melt and mold the powder on the molding system 5.

[0028] Specifically, the clamping device 3 may be a fixed block obtained by 3D printing, through which the laser head 4 is directly clamped and fixed in the positioning system 2 .

[0029] Preferably, the molding system 5 includes a molding cylinder 10 and a powder cylinder 11 arranged adjacent to each other, wherein the molding cylinder 10 is provided with an embedding device 12, wherein the embedding device 12 includes a molding piston 13, a third motor 14, a polished rod 15 and a screw rod 16, wherein the upper end of the screw rod 16 is threadedly connected to the molding piston 13, the lower end of the screw rod 16 is connected to the third motor 14, and the molding piston 13 is also connected to the polished rod 15. In addition, a powder piston 25 and a lifting device are provided in the powder cylinder 11, wherein the lifting device can also adopt the same third motor 14, polished rod 15 and screw rod 16 structures as those in the above-mentioned embedding device 12 to realize the lifting and lowering of the powder piston 25. The above-mentioned embedding device 12 can realize the stable lifting and lowering of the molding piston 13 through the third motor 14, the polished rod 15 and the screw rod 16, and has a simple structure. In addition, the top surface of the molding piston 13 can be spliced ​​by 5 metal plates, thereby realizing cost reduction and utilizing narrow and limited space.

[0030] It can be understood that when working, the laser head 4 melts and molds the powder on the forming cylinder 10 to form a layer of the part; after completing the melting and molding of one layer, the third motor 14 of the embedding device 12 drives the screw 16 to rotate so that the molding piston 13 moves down one layer along the light rod 15, and a thin layer of groove is formed in the forming cylinder 10; further, the lifting device of the powder cylinder 11 drives the powder piston 25 to rise so that the powder in the powder cylinder 11 rises, and further through the left and right movement of the powder spreading system 6 to evenly spread the powder on the forming cylinder 10, that is, to achieve a new layer of powder spreading, so that the laser head 4 can melt the new layer; this cycle is repeated, layer by layer, until the three-dimensional part is formed. The printer device of the utility model is based on the selected laser melting (SLM) 3D printing technology of the prior art, and its printing principle is not described in detail here.

[0031] In the above embedding device 12, the lower end of the screw rod 16 is specifically connected to the third motor 14 through a coupling; the number of the polished rods 15 can specifically be three; and the forming piston 13 is specifically square.

[0032] In addition, the powder spreading system 6 includes a powder spreading platform 17, two slide rails 18, a fourth motor 19 and a baffle 20. The powder spreading platform 17 is arranged on the top of the molding system 5. The two slide rails 18 are respectively arranged on both sides of the length direction of the powder spreading platform 17. The two ends of the baffle 20 are slidably arranged on the two slide rails 18 through the third slider 27. The fourth motor 19 is connected to the end of the baffle 20. Belt clamping devices 21 are provided at both ends of the baffle 20. The ends of the baffle 20 are specifically fixed to the belt clamping devices 21 by set screws 26. The number of the fourth motors 19 is two, and the fourth motor 19 is connected to the belt clamping device 21 through a belt 22. Preferably, the powder spreading system 6 also includes a cylindrical rubber rod 23, which is arranged at the bottom of the baffle 20. It can be understood that the fourth motor 19 drives the baffle 20 to move left and right along the slide rail 18 through the belt 22 to realize the powder spreading action of the whole machine, wherein the baffle 20 is used to push away the powder, and the cylindrical rubber rod 23 is used to flatten the powder.

[0033] Specifically, the overall size of the rack 1 may be within 500mm*500mm*500mm. Preferably, the rack 1 uses an aluminum alloy polished rod with a groove, and the x-axis guide rail 8 may be fixed in the groove of the rack 1. In addition, the groove design may better accommodate the wiring of electronic components such as motors and power supplies.

[0034] Compared with the prior art, the present invention provides a desktop laser additive manufacturing printer device, which has the following beneficial effects: the positioning system of the present invention is driven by a motor to realize the XY-axis bidirectional movement of the laser head. Compared with the galvanometer, the motor plane transmission positioning method of the present invention can reduce the cost of the positioning system without reducing the accuracy of the alignment position, thereby reducing the overall cost of the laser additive manufacturing printer device; in addition, the positioning system, clamping device, laser head, molding system, powder spreading system, etc. of the present invention are integrated on a frame, which can streamline the overall volume of the printer device, avoid the excessive size of the printer device, and improve the scope of application of the printer device.

[0035] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desktop laser additive manufacturing printer device, characterized in that: include: A frame, a positioning system, a clamping device, a laser head, a molding system and a powder spreading system; the positioning system comprises a first motor, a second motor, a y-axis guide rail and two x-axis guide rails, the two x-axis guide rails are respectively arranged on both sides of the top of the frame, the two x-axis guide rails are respectively provided with a first slider, the first motor is connected to the first slider, the two ends of the y-axis guide rail are respectively connected to the two first sliders, the y-axis guide rail is provided with a second slider, the second motor is connected to the second slider, the clamping device is arranged on the second slider, and the laser head is arranged on the clamping device; the molding system is arranged on the frame and is located below the laser head, and the powder spreading system is arranged on the molding system.

2. The desktop laser additive manufacturing printer device according to claim 1, characterized in that: The clamping device is a fixing block obtained by 3D printing.

3. The desktop laser additive manufacturing printer device according to claim 1, characterized in that: The molding system includes a molding cylinder and a powder cylinder arranged adjacent to each other. The molding cylinder is provided with an embedding device, which includes a molding piston, a third motor, a polished rod and a lead screw. The upper end of the lead screw is connected to the molding piston, the lower end of the lead screw is connected to the third motor, and the molding piston is also connected to the polished rod.

4. The desktop laser additive manufacturing printer device according to claim 3, characterized in that: The lower end of the lead screw is connected to the third motor through a coupling; the number of the polished rods is three.

5. The desktop laser additive manufacturing printer device according to claim 3, characterized in that: The molded piston is square.

6. The desktop laser additive manufacturing printer device according to claim 3, characterized in that: The powder spreading system includes a powder spreading platform, two slide rails, a fourth motor and a baffle. The powder spreading platform is arranged on the top of the molding system. The two slide rails are respectively arranged on both sides of the length direction of the powder spreading platform. The two ends of the baffle are slidably arranged on the two slide rails, and the fourth motor is connected to the end of the baffle.

7. The desktop laser additive manufacturing printer device according to claim 6, characterized in that: Belt clamping devices are provided at both ends of the baffle, the number of the fourth motors is two, and the fourth motors are connected to the belt clamping devices via belts.

8. The desktop laser additive manufacturing printer device according to claim 6, characterized in that: The powder spreading system also includes a cylindrical rubber rod, which is arranged at the bottom of the baffle.

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