Precise powder spreading module for array type powder spreading

Abstract

The utility model relates to the field of powder spreading, in particular to a precise powder spreading module for array type powder spreading, which comprises a mounting assembly and a synchronizing assembly, the synchronous assembly comprises a rotating motor, a driving gear, a driven gear and a synchronous belt. The rotating motor drives the driving gear to rotate through a driving shaft. The mounting assembly comprises a mounting plate, a synchronous wheel seat, a scraper module connecting piece, an adapter plate and a pressing plate; a driven shaft is coaxially arranged on a driven gear; the synchronous wheel seats are fixedly arranged at the two ends of the mounting plate; the driving shaft and the driven shaft are rotationally connected to the synchronous wheel seats at the two ends respectively; the pressing plate is fixedly connected to the synchronous belt, the adapter plate is fixedly connected to the bottom face of the pressing plate, the scraper module connecting piece is fixedly connected to the side face of the adapter plate in the width direction, and the powder laying device is installed on the scraper module connecting piece. The 3D metal printing powder spreading device has the advantages that the powder spreading device can move conveniently, meanwhile, large and small strokes are considered, and interference with other 3D metal printing structures is not likely to be caused.

Description

Technical Field

[0001] The present application relates to the field of powder spreading, and in particular to a precision powder spreading module for array-type powder spreading. Background Art

[0002] 3D metal printing technology uses laser melting technology to melt metal powder to form functional solid components. It is a fully digital rapid prototyping manufacturing process that produces high-density metal parts directly based on the interface data of the three-dimensional CAD layer. When manufacturing parts through 3D metal printing technology, it is necessary to move the powder spreading device, which includes a powder spreading cylinder and a scraper. The powder spreading cylinder moves to spread the powder in an array, and the scraper moves to flatten and evenly distribute the metal powder layer. Then, each metal layer is melted separately in a strictly controlled air environment. However, in related technologies, the movement of the powder spreading device is usually driven by a telescopic cylinder. This method is applicable when the stroke of the powder spreading device is short. However, when the length and area to be spread and flattened are large and the stroke is long, the cylinder body and piston rod need to be set longer, and the telescopic cylinder as a whole needs to be set longer to meet the stroke, which is easy to cause interference with the rest of the 3D metal printing structure. Utility Model Content

[0003] In order to facilitate the movement of the powder spreading device while taking into account large and small strokes and not easily cause interference with other 3D metal printing structures, the present application provides a precision powder spreading module for array-type powder spreading.

[0004] The present application provides a precision powder spreading module for array-type powder spreading using the following technical solutions:

[0005] A precision powder spreading module for array-type powder spreading, comprising a mounting component and a synchronization component;

[0006] The synchronous assembly includes a rotating motor, a driving gear, a driven gear and a synchronous belt, wherein the synchronous belt is engaged with the driving gear and the driven gear at the same time, and the rotating motor drives the driving gear to rotate through the driving shaft;

[0007] The mounting assembly includes a mounting plate, a synchronous wheel seat, a scraper module connector, an adapter plate and a pressure plate. A driven shaft is coaxially arranged on the driven gear; the synchronous wheel seat is fixedly arranged at both ends of the mounting plate, and the driving shaft and the driven shaft are rotatably connected to the synchronous wheel seats at both ends respectively;

[0008] The pressure plate is fixedly connected to the synchronous belt, the adapter plate is fixedly connected to the bottom surface of the pressure plate, the scraper module connector is fixedly connected to the side surface in the width direction of the adapter plate, and the powder spreading device is installed on the scraper module connector.

[0009] By adopting the above technical solution, when the powder spreading device needs to move, the rotating motor is started to drive the driving gear to rotate, drive the synchronous belt to move, and then drive the adapter plate and the scraper module connector to move, so as to realize the movement of the powder spreading device. After completing the one-way powder spreading in the process of moving to one end, the powder spreading device is driven to move in the opposite direction, and the scraper is used to scrape the powder, so as to flatten the metal powder layer and evenly distribute it, thereby realizing precise powder spreading. The powder spreading module of the present application has a simple structure and is easy to install. Compared with the telescopic cylinder, it takes into account both large and small strokes at the same time, and is less likely to cause interference with other 3D metal printing structures.

[0010] Optionally, the pressure plate includes an upper block and a lower block detachably connected by bolts, the synchronous belt is clamped between the upper block and the lower block, a groove for the synchronous belt to pass through is provided on the top surface of the lower block, and a tooth groove adapted to the synchronous belt is provided on the bottom surface of the upper block.

[0011] By adopting the above technical solution, the detachable connection between the upper block and the lower block facilitates the installation between the pressure plate and the synchronous belt. At the same time, the setting of the tooth groove can increase the tightness of the connection between the pressure plate and the synchronous belt, thereby improving the reliability of the scraper module connector moving with the synchronous belt.

[0012] Optionally, the scraper module connecting part is an L-plate, the top of the L-plate is bent toward the direction close to the adapter plate to form a protrusion, the protrusion is clamped on one side of the top surface of the adapter plate, and the L-plate is fixed to the side of the adapter plate by bolts.

[0013] By adopting the above technical solution, the provision of the raised portion facilitates the positioning of the L-plate during installation, while further increasing the stability of the connection between the scraper module connector and the adapter plate.

[0014] Optionally, the mounting assembly further includes a slider and an I-shaped guide rail, wherein the I-shaped guide rail is fixedly disposed on the mounting plate, the slider is fixedly connected to the bottom of the adapter plate, and the bottom of the slider is provided with a sliding groove for the I-shaped cylinder to pass through and to match.

[0015] By adopting the above technical solution, it helps to further improve the stability of the movement of the scraper module connecting parts, thereby improving the stability of powder spreading and scraping.

[0016] Optionally, the mounting plate is an angle plate, the side of the angle plate is located on the side of the adapter plate away from the scraper module connector, and the side of the adapter plate and the slider away from the scraper module connector is arranged adjacent to the side of the angle plate.

[0017] By adopting the above technical solution, the side of the angle plate can limit the side of the adapter plate and the slider, and improve the structural strength and increase the overall aesthetics.

[0018] Optionally, the synchronous wheel seat includes a base plate and side plates fixedly connected to both ends of the base plate, and the driving shaft and the driven shaft are connected to the side plates through bearings; a plurality of waist-shaped holes are opened on the base plate, and the synchronous wheel seat is fixedly connected to the mounting plate by bolts passing through the waist-shaped holes.

[0019] By adopting the above technical solution, the setting of the waist-shaped hole can fine-tune the installation position of the base plate to adapt to the actual length of the synchronous belt, and the setting of the side plate facilitates the installation of the driving shaft and the driven shaft.

[0020] Optionally, the mounting assembly further includes a support block, a mounting notch is provided on a side edge of the top surface of the mounting plate, and the mounting plate is fixed to the support block by bolts passing through the mounting notch.

[0021] By adopting the above technical solution, the support block can support the mounting plate and facilitate the installation between the support block and the remaining structures of the 3D metal printing.

[0022] Optionally, a hollow hole is provided on the bottom surface of the support block.

[0023] By adopting the above technical solution, weight can be reduced and materials can be saved at the same time.

[0024] Optionally, a flexible member is provided on a side of the synchronous wheel seat close to the slider.

[0025] By adopting the above technical solution, the anti-collision effect of the slider can be achieved.

[0026] Optionally, two groups of the mounting components and the synchronization components are arranged opposite to each other, and both sides of the powder spreading device are fixedly connected to the scraper module connectors on both sides.

[0027] By adopting the above technical solution, it helps to improve the consistency of installation on both sides of the powder spreading device, thereby improving the stability of the powder spreading.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. When the powder spreading device needs to move, the rotating motor is started to drive the driving gear to rotate, which drives the synchronous belt to move, and then drives the adapter plate and the scraper module connector to move, so as to realize the movement of the powder spreading device. After completing the one-way powder spreading in the process of moving to one end, the powder spreading device is driven to move in the opposite direction, and the scraper is used to scrape the powder, so as to flatten and evenly distribute the metal powder layer, thereby realizing precise powder spreading. The powder spreading module of the present application has a simple structure and a detachable installation method that is easy to operate. Compared with the telescopic cylinder, it can take into account both large and small strokes and is less likely to cause interference with other 3D metal printing structures.

[0030] 2. The setting of the pressure plate and the detachable connection between the upper block and the lower block facilitate the installation between the pressure plate and the synchronous belt. At the same time, the setting of the tooth groove can increase the tightness of the connection between the pressure plate and the synchronous belt, thereby improving the reliability of the scraper module connection parts moving with the synchronous belt;

[0031] 3. The side of the angle plate can limit the side of the adapter plate and the slider, and improve the structural strength and increase the overall aesthetics; the setting of the waist-shaped hole can fine-tune the installation position of the base plate to adapt to the actual length of the synchronous belt, and the setting of the side plate facilitates the installation of the driving shaft and the driven shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a precision powder spreading module for array-type powder spreading according to an embodiment of the present application.

[0033] Figure 2 It is a schematic structural diagram for illustrating the driving gear in the embodiment of the present application.

[0034] Figure 3 It is a structural schematic diagram used to illustrate the synchronous wheel seat in the embodiment of the present application.

[0035] Figure 4 It is a structural schematic diagram used to illustrate the pressure plate in the embodiment of the present application.

[0036] Figure 5 It is a structural schematic diagram used to illustrate the support block in the embodiment of the present application.

[0037] Explanation of the accompanying drawings: 1. Support block; 2. Mounting plate; 3. Synchronous wheel seat; 4. Idle wheel seat; 5. Driven shaft; 6. Driving shaft; 7. Adapter plate; 8. Reducer mounting seat; 9. Scraper module connector; 10. Synchronous belt; 11. Pressure plate; 12. Rotating motor; 13. I-shaped guide rail; 14. Slider; 15. Flexible part; 16. Driven gear; 17. Bearing; 18. Driving gear; 19. Protrusion; 20. Upper block; 21. Lower block; 22. Through groove; 23. Tooth groove; 24. Bottom plate; 25. Side plate; 26. Waist-shaped hole; 27. Mounting notch; 28. Hollow hole. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The embodiment of the present application discloses a precision powder spreading module for array-type powder spreading. Figure 1-3The precision powder spreading module for array-type powder spreading includes a mounting assembly and a synchronization assembly. The synchronization assembly includes a reducer mounting base 8, a rotating motor 12, a driving gear 18, a driven gear 16, and a timing belt 10. The timing belt 10 is a polyurethane timing belt 10 and meshes with both the driving gear 18 and the driven gear 16. The rotating motor 12 is a planetary reducer and is mounted on the reducer mounting base 8. The rotating motor 12 drives the driving gear 18 to rotate via the driving shaft 6. The mounting assembly includes a mounting plate 2, a synchronous wheel base 3, a scraper module connector 9, an adapter plate 7, and a pressure plate 11. The driven gear 16 is coaxially provided with a driven shaft 5.

[0040] The synchronous wheel seat 3 is fixedly arranged at both ends of the mounting plate 2, and the driving shaft 6 and the driven shaft 5 are respectively rotatably connected to the synchronous wheel seat 3 at both ends; the pressure plate 11 is fixedly connected to the synchronous belt 10, the adapter plate 7 is fixedly connected to the bottom surface of the pressure plate 11, the scraper module connecting part 9 is fixedly connected to the side surface of the adapter plate 7 in the width direction, and the powder spreading device is installed on the scraper module connecting part 9.

[0041] When the powder spreading device needs to move, the rotating motor 12 is started to drive the driving gear 18 to rotate, drive the synchronous belt 10 to move, and then drive the adapter plate 7 and the scraper module connector 9 to move, so as to realize the movement of the powder spreading device. After completing the one-way powder spreading in the process of moving to one end, the powder spreading device is driven to move in the opposite direction, and the scraper is used to scrape the powder, so as to flatten the metal powder layer and evenly distribute it, so as to realize precise powder spreading. The powder spreading module of the present application has a simple structure and is easy to install. Compared with the telescopic cylinder, it takes into account both large and small strokes at the same time, and is not likely to cause interference with other 3D metal printing structures.

[0042] Reference Figure 1-5 , two groups of mounting components and synchronization components are arranged opposite to each other, and the two sides of the powder spreading device are fixedly connected to the scraper module connectors 9 on both sides, which helps to improve the consistency of the installation of the two sides of the powder spreading device, thereby improving the stability of the powder spreading. The mounting assembly also includes a support block 1, and a mounting notch 27 is provided on the side of the top surface of the mounting plate 2. The mounting plate 2 is fixed to the support block 1 by bolts passing through the mounting notch 27. The support block 1 can support the mounting plate 2, and at the same time facilitate the installation between the support block 1 and the rest of the 3D metal printing structure. A hollow hole 28 is provided on the bottom surface of the support block 1, which plays a role in reducing weight and saving materials.

[0043] Reference Figure 2 and Figure 4The pressure plate 11 includes an upper block 20 and a lower block 21 that are detachably connected by bolts. The synchronous belt 10 is clamped between the upper and lower blocks. The top surface of the lower block 21 is provided with a slot 22 for the synchronous belt 10 to pass through, and the bottom surface of the upper block 20 is provided with a tooth groove 23 that adapts to the synchronous belt 10. The detachable connection between the upper and lower blocks 20, 21 facilitates the installation of the pressure plate 11 and the synchronous belt 10. At the same time, the provision of the tooth groove 23 can increase the tightness of the connection between the pressure plate 11 and the synchronous belt 10, thereby improving the reliability of the scraper module connector 9 moving with the synchronous belt 10.

[0044] Reference Figure 2 and Figure 4 The scraper module connector 9 is an L-shaped plate. The top of the L-shaped plate is bent toward the adapter plate 7 to form a raised portion 19. The raised portion 19 is fixed to one side of the top surface of the adapter plate 7. The L-shaped plate is fixed to the side of the adapter plate 7 by bolts. The provision of the raised portion 19 facilitates the positioning of the L-shaped plate during installation and further increases the stability of the connection between the scraper module connector 9 and the adapter plate 7.

[0045] Reference Figure 1-4 The mounting assembly also includes a slider 14 and an I-shaped guide rail 13. The I-shaped guide rail 13 is fixedly arranged on the mounting plate 2. The slider 14 is fixedly connected to the bottom of the adapter plate 7. The bottom of the slider 14 is provided with a corresponding slide groove for the I-shaped cylinder to pass through, which helps to further improve the stability of the movement of the scraper module connector 9, thereby improving the stability of powder spreading and scraping.

[0046] Reference Figure 1-3 The mounting plate 2 is an angled plate made of angle steel. The side of the angled plate is located on the side of the adapter plate 7 facing away from the scraper module connector 9. The sides of the adapter plate 7 and slider 14 facing away from the scraper module connector 9 are positioned adjacent to the side of the angled plate. The side of the angled plate serves to limit the sides of the adapter plate 7 and slider 14, improving structural strength and overall aesthetics. An idler pulley seat 4 is also mounted on the end of the mounting plate 2 near the driven shaft 5.

[0047] Reference Figure 1-3 The synchronous wheel seat 3 includes a base plate 24 and side plates 25 fixedly connected to both ends of the base plate 24. The driving shaft 6 and the driven shaft 5 are connected to the side plates 25 via bearings 17. A plurality of waist-shaped holes 26 are provided on the base plate 24, and the synchronous wheel seat 3 is fixedly connected to the mounting plate 2 by bolts passing through the waist-shaped holes 26. The provision of the waist-shaped holes 26 enables fine-tuning of the installation position of the base plate 24 to facilitate adaptation to the actual length of the synchronous belt 10, and the provision of the side plates 25 facilitates the installation of the driving shaft 6 and the driven shaft 5. A flexible member 15 is provided on the side of the synchronous wheel seat 3 close to the slider 14. In the embodiment of the present application, the flexible member 15 is a silicone anti-collision strip that can play an anti-collision role for the slider 14.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A precision powder spreading module for array-type powder spreading, characterized by: Includes installation components and synchronization components; The synchronous assembly comprises a rotating motor (12), a driving gear (18), a driven gear (16) and a synchronous belt (10), wherein the synchronous belt (10) is engaged with the driving gear (18) and the driven gear (16) at the same time, and the rotating motor (12) drives the driving gear (18) to rotate via a driving shaft (6); The mounting assembly comprises a mounting plate (2), a synchronous wheel seat (3), a scraper module connector (9), an adapter plate (7) and a pressure plate (11); a driven shaft (5) is coaxially arranged on the driven gear (16); the synchronous wheel seat (3) is fixedly arranged at both ends of the mounting plate (2); the driving shaft (6) and the driven shaft (5) are respectively rotatably connected to the synchronous wheel seats (3) at both ends; The pressing plate (11) is fixedly connected to the synchronous belt (10), the adapter plate (7) is fixedly connected to the bottom surface of the pressing plate (11), the scraper module connecting member (9) is fixedly connected to the side surface in the width direction of the adapter plate (7), and the powder spreading device is installed on the scraper module connecting member (9).

2. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The pressure plate (11) includes an upper block (20) and a lower block (21) which are detachably connected by bolts, and the synchronous belt (10) is clamped between the upper block (20) and the lower block (21). A through groove (22) for the synchronous belt (10) to pass through is provided on the top surface of the lower block (21), and a tooth groove (23) adapted to the synchronous belt (10) is provided on the bottom surface of the upper block (20).

3. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The scraper module connecting member (9) is an L-plate, the top end of the L-plate is bent toward the direction close to the adapter plate (7) to form a protrusion (19), the protrusion (19) is clamped on one side of the top surface of the adapter plate (7), and the L-plate is fixed to the side surface of the adapter plate (7) by bolts.

4. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The mounting assembly further comprises a slider (14) and an I-shaped guide rail (13), wherein the I-shaped guide rail (13) is fixedly arranged on the mounting plate (2), the slider (14) is fixedly connected to the bottom of the adapter plate (7), and the bottom of the slider (14) is provided with a sliding groove for the I-shaped cylinder to pass through and to be adapted thereto.

5. The precision powder spreading module for array-type powder spreading according to claim 4, characterized in that: The mounting plate (2) is an angle plate, the side of the angle plate is located on the side of the adapter plate (7) away from the scraper module connecting part (9), and the side of the adapter plate (7) and the slider (14) away from the scraper module connecting part (9) is arranged adjacent to the side of the angle plate.

6. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The synchronous wheel seat (3) comprises a base plate (24) and side plates (25) fixedly connected to both ends of the base plate (24); the driving shaft (6) and the driven shaft (5) are connected to the side plates (25) via bearings (17); a plurality of waist-shaped holes (26) are provided on the base plate (24); the synchronous wheel seat (3) is fixedly connected to the mounting plate (2) via bolts passing through the waist-shaped holes (26).

7. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The mounting assembly further comprises a support block (1), a mounting notch (27) is provided on the side edge of the top surface of the mounting plate (2), and the mounting plate (2) is fixed to the support block (1) by means of bolts passing through the mounting notch (27).

8. The precision powder spreading module for array-type powder spreading according to claim 7, characterized in that: A hollow hole (28) is provided on the bottom surface of the support block (1).

9. The precision powder spreading module for array-type powder spreading according to claim 4, characterized in that: A flexible member (15) is provided on one side of the synchronous wheel seat (3) close to the slider (14).

10. The precision powder spreading module for array-type powder spreading according to claim 1, characterized in that: The installation components and the synchronization components are respectively arranged in two groups relative to each other, and the two sides of the powder spreading device are respectively fixedly connected to the scraper module connecting parts (9) on both sides.

Images