阅读说明：本技术 一种增材制造用金属粉末柔性铺展装置 (Flexible metal powder spreading device for additive manufacturing ) 是由 许宁萍 许辰 涂文昕 于 2021-10-18 设计创作，主要内容包括：本发明公开了一种增材制造用金属粉末柔性铺展装置,包括储存壳体、分散输送腔、连接座、导槽、转体、沟槽和联动组件等；本发明具有结构合理简单、生产成本低、安装方便,这里的电机一能够带动辊轴和转体旋转,而转体的旋转则通过沟槽和联动组件带动滑板整体左右振动,从而有助于储存壳体中的金属粉末进入到所有的分散槽中并通过筛板筛选后均匀落入,而辊轴和条体的旋转则能够将落下的金属粉末均匀抛洒到输送带上面,也就确保了后续铺展的均匀性,以及避免了金属粉末的缺失；本发明中设置的铺展机构,不仅能够通过输送带将金属粉末均匀输送到铺展位置进行铺设,另外也不影响金属粉末的持续供给,也就避免了铺展时候金属粉末的缺失。(The invention discloses a metal powder flexible spreading device for additive manufacturing, which comprises a storage shell, a dispersing and conveying cavity, a connecting seat, a guide groove, a rotating body, a groove, a linkage assembly and the like; the invention has the advantages of reasonable and simple structure, low production cost and convenient installation, the first motor can drive the roll shaft and the rotating body to rotate, the rotating body drives the sliding plate to integrally vibrate left and right through the groove and the linkage assembly, so that metal powder in the storage shell enters all the dispersing grooves and uniformly falls after being screened through the sieve plate, the roll shaft and the strip body can uniformly throw the falling metal powder onto the conveying belt through rotation, the subsequent spreading uniformity is ensured, and the loss of the metal powder is avoided; the spreading mechanism provided by the invention can uniformly convey the metal powder to the spreading position for spreading through the conveying belt, and in addition, the continuous supply of the metal powder is not influenced, so that the defect of the metal powder in spreading is avoided.)

1. The utility model provides a flexible device that spreads of metal powder for additive manufacturing which characterized in that: the device comprises a storage shell (1), a dispersing and conveying cavity (2), a connecting seat (3), a sliding chute (4), a sliding plate (5), a dispersing groove (6), a sieve plate (7), a motor I (8), an output cavity (9), a roller shaft (10), a strip body (11), a spreading mechanism (12), a movable frame body (13), a motor II (14), a rack (15), a driving gear (16), a guide groove (17), a rotating body (18), a groove (19) and a linkage assembly (20);

the top of the connecting seat (3) is fixedly connected with a storage shell (1);

the dispersing and conveying cavity (2) is arranged inside the upper side of the connecting seat (3), an opening on the upper side of the dispersing and conveying cavity (2) is communicated with an outlet on the lower side of the storage shell (1), and a transverse sliding groove (4) is arranged on the lower side of the dispersing and conveying cavity (2);

the sliding plate (5) is transversely movably connected inside the sliding groove (4), a sieve plate (7) is fixedly connected inside the lower side of the sliding plate (5), a plurality of dispersing grooves (6) are formed in the sliding plate (5), and the lower sides of the dispersing grooves (6) are connected with the upper side of the sieve plate (7);

the first motor (8) is fixedly connected to the inner part of the left side of the connecting seat (3);

the output cavity (9) is arranged inside the lower side of the storage shell (1), an opening on the upper side of the output cavity (9) is communicated with an outlet on the lower side of the dispersing and conveying cavity (2), and a roller shaft (10) is movably connected in the center inside the output cavity (9);

the center of the left side of the roll shaft (10) is fixedly connected with an output shaft of the right side of the motor I (8), and a plurality of strip bodies (11) are uniformly and fixedly connected to the outer surface of the roll shaft (10);

the rotating body (18) is movably connected inside the right side of the connecting seat (3), the center of the rotating body (18) is fixedly connected outside the right side of the roll shaft (10), and a groove (19) is formed in the surface of the rotating body (18);

the top of the linkage component (20) is fixedly connected to the right lower side of the sliding plate (5), and the outer part of the lower side of the linkage component (20) is movably connected to the inner part of the groove (19);

the guide groove (17) is longitudinally arranged in the lower side of the output cavity (9), a longitudinal movable frame body (13) is movably connected in the guide groove (17), and a longitudinal spreading mechanism (12) is fixedly connected in the movable frame body (13);

a longitudinal rack (15) is fixedly connected to the lower right side of the frame body (13);

the motor II (14) is fixedly connected inside the right lower side of the connecting seat (3), a driving gear (16) is fixedly connected to an output shaft on the upper side of the motor II (14), and the driving gear (16) is connected with the rack (15).

2. The flexible spreading device of metal powder for additive manufacturing according to claim 1, wherein: the spreading mechanism (12) comprises a mounting shell (121), a mounting groove (122), a motor III (123), a transmission gear I (124), a transmission gear II (125), a gear cavity (126), a driving roller (127), a conveying belt (128), a supporting plate (129), a driven roller (1210), an output port (1211), a first scraping strip (1212) and a second scraping strip (1213);

a mounting groove (122) is formed in the upper inner portion of the mounting shell (121), a third motor (123) is fixedly connected to the outer portion of the lower left rear side of the mounting shell (121), and a gear cavity (126) is formed in the left rear side of the mounting shell (121);

the first transmission gear (124) is movably connected to the lower side of the gear cavity (126), and the center of the first transmission gear (124) is fixedly connected to an output shaft of the third motor (123);

the driving roller (127) is movably connected to the left side of the mounting groove (122);

the second transmission gear (125) is movably connected to the upper side of the gear cavity (126), the center of the second transmission gear (125) is fixedly connected with the outer part of the rear side of the driving roller (127), and the lower side tooth part of the second transmission gear (125) is connected with the upper side tooth part of the first transmission gear (124);

the driven roller (1210) is movably connected to the right side of the mounting groove (122), and the driven roller (1210) is connected with the driving roller (127) through a conveying belt (128);

the supporting plate (129) is fixedly connected to the upper side of the mounting groove (122), and the top surface of the supporting plate (129) is connected with the top surface of the inner side of the conveying belt (128);

the output port (1211) is arranged at the lower right side of the mounting groove (122);

the first scraping strip (1212) is positioned outside the lower right side of the output port (1211), and the top of the first scraping strip (1212) is fixedly connected to the right side of the bottom surface of the mounting shell (121);

the second scraping strip (1213) is positioned outside the lower left side of the output port (1211), and the top of the second scraping strip (1213) is fixedly connected to the right side of the bottom surface of the mounting shell (121).

3. The flexible spreading device of metal powder for additive manufacturing according to claim 2, wherein: and the motor III (123) is a servo motor or a stepping motor.

4. The flexible spreading device of metal powder for additive manufacturing according to claim 2, wherein: the top surface of the supporting plate (129) is a smooth surface.

5. The flexible spreading device of metal powder for additive manufacturing according to claim 2, wherein: the lower sides of the first scraping strip (1212) and the second scraping strip (1213) are in a sharp-angled shape.

6. The flexible spreading device of metal powder for additive manufacturing according to claim 1, wherein: the first motor (8) and the second motor (14) are both servo motors or stepping motors.

7. The flexible spreading device of metal powder for additive manufacturing according to claim 1, wherein: the specific structure of the linkage assembly (20) comprises a linkage shaft (201) and a bearing (202);

the outside of the lower side of the linkage shaft (201) is fixedly connected with the inside of the bearing (202), and the outside of the bearing (202) is movably connected with the inside of the groove (19).

8. The flexible spreading device of metal powder for additive manufacturing according to claim 1, wherein: a cover is arranged at the opening at the upper side of the storage shell (1).

The technical field is as follows:

the invention relates to the technical field of additive manufacturing equipment, in particular to a metal powder flexible spreading device for additive manufacturing.

Background art:

with the development of scientific technology, various methods for additive manufacturing of metal parts are available, wherein selective laser melting is a more common additive manufacturing method. The forming process of selective laser melting is as follows: a layer of metal powder is paved on a forming cylinder by a powder paving device, and laser beams scan the powder selectively under the control of a computer according to the shape information of the interface of the formed part, so that the powder in a scanning area is melted to obtain the single-layer shape of the formed part; then the forming cylinder descends by a distance of one layer thickness, the powder spreading device spreads the powder again, and the next layer is formed continuously; the metal parts with specific geometric shapes are finally obtained by the layer-by-layer superposition, and the existing metal powder flexible spreading device for additive manufacturing is not uniform in spreading and is easy to have the phenomenon of material shortage during spreading.

The invention content is as follows:

the invention aims to solve the problems that the existing metal powder flexible spreading device for additive manufacturing is not uniform in spreading and is easy to cause material shortage during spreading.

In order to solve the above problems, the present invention provides a technical solution: the utility model provides a metal powder flexibility device that spreads for additive manufacturing which innovation point lies in: the device comprises a storage shell, a dispersing and conveying cavity, a connecting seat, a sliding chute, a sliding plate, a dispersing groove, a sieve plate, a motor I, an output cavity, a roller shaft, a strip body, a spreading mechanism, a movable frame body, a motor II, a rack, a driving gear, a guide groove, a rotating body, a groove and a linkage assembly; the top of the connecting seat is fixedly connected with a storage shell; the dispersing and conveying cavity is arranged inside the upper side of the connecting seat, an opening on the upper side of the dispersing and conveying cavity is communicated with an outlet on the lower side of the storage shell, and a transverse sliding groove is formed in the lower side of the dispersing and conveying cavity; the sliding plate is movably connected inside the sliding groove in the transverse direction, the sieve plate is fixedly connected inside the lower side of the sliding plate, a plurality of dispersing grooves are formed in the sliding plate, and the lower sides of the dispersing grooves are connected with the upper side of the sieve plate; the first motor is fixedly connected to the inside of the left side of the connecting seat; the output cavity is arranged in the lower side of the storage shell, an opening on the upper side of the output cavity is communicated with an outlet on the lower side of the dispersing and conveying cavity, and the center in the output cavity is movably connected with a roll shaft; the center of the left side of the roll shaft is fixedly connected with an output shaft at the right side of the motor, and a plurality of strip bodies are uniformly and fixedly connected on the outer surface of the roll shaft; the rotating body is movably connected inside the right side of the connecting seat, the center of the rotating body is fixedly connected outside the right side of the roller shaft, and a groove is formed in the surface of the rotating body; the top of the linkage assembly is fixedly connected to the right lower side of the sliding plate, and the outer part of the lower side of the linkage assembly is movably connected to the inner part of the groove; the guide groove is longitudinally arranged in the lower side of the output cavity, a longitudinal movable frame body is movably connected in the guide groove, and a longitudinal spreading mechanism is fixedly connected in the movable frame body; the right lower side of the frame body is fixedly connected with a longitudinal rack; the second motor is fixedly connected inside the lower right side of the connecting seat, a driving gear is fixedly connected to an output shaft on the second upper side of the motor, and the driving gear is connected with the rack.

Preferably, the spreading mechanism comprises a mounting shell, a mounting groove, a motor III, a transmission gear I, a transmission gear II, a gear cavity, a driving roller, a conveying belt, a supporting plate, a driven roller, an output port, a first scraping strip and a second scraping strip; the mounting shell is internally provided with a mounting groove at the upper side, the outer part of the lower left rear side of the mounting shell is fixedly connected with a motor III, and a gear cavity is arranged in the rear left side of the mounting shell; the first transmission gear is movably connected to the lower side of the gear cavity, and the center of the first transmission gear is fixedly connected to the three output shafts of the motor; the driving roller is movably connected to the left side of the mounting groove; the second transmission gear is movably connected to the upper side of the gear cavity, the center of the second transmission gear is fixedly connected with the outer part of the rear side of the driving roller, and the lower side tooth part of the second transmission gear is connected with the upper side tooth part of the first transmission gear; the driven roller is movably connected to the right side of the mounting groove and is connected with the driving roller through a conveying belt; the supporting plate is fixedly connected to the upper side of the mounting groove, and the top surface of the supporting plate is connected with the top surface of the inner side of the conveying belt; the output port is arranged at the right lower side of the mounting groove; the first scraping strip is positioned outside the lower right side of the output port, and the top of the first scraping strip is fixedly connected to the right side of the bottom surface of the mounting shell; the second scraping strip is located on the outer portion of the lower left side of the output port, and the top of the second scraping strip is fixedly connected to the right side of the bottom surface of the mounting shell.

Preferably, the motor three is a servo motor or a stepping motor.

Preferably, the top surface of the supporting plate is a smooth surface.

Preferably, the lower sides of the first scraping strip and the second scraping strip are both in a sharp-angled shape.

Preferably, the first motor and the second motor are both servo motors or stepping motors.

Preferably, the specific structure of the linkage assembly comprises a linkage shaft and a bearing; the outside of the lower side of the linkage shaft is fixedly connected with the inside of the bearing, and the outside of the bearing is movably connected with the inside of the groove.

Preferably, a cover is arranged at the opening at the upper side of the storage shell.

The invention has the beneficial effects that:

(1) the invention has the advantages of reasonable and simple structure, low production cost and convenient installation, the first motor can drive the roll shaft and the rotating body to rotate, the rotating body drives the sliding plate to integrally vibrate left and right through the groove and the linkage assembly, so that the metal powder in the storage shell can enter all the dispersing grooves and uniformly fall after being screened through the sieve plate, the roll shaft and the strip body can uniformly throw the falling metal powder onto the conveying belt through rotation, the subsequent spreading uniformity is ensured, and the loss of the metal powder is avoided.

(2) The spreading mechanism provided by the invention can uniformly convey the metal powder to the spreading position for spreading through the conveying belt, and in addition, the continuous supply of the metal powder is not influenced, so that the defect of the metal powder in spreading is avoided.

(3) The first scraping strip and the second scraping strip can further pave the fallen metal powder, so that the spreading quality of the metal powder is improved.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural view of the spreading mechanism.

Fig. 4 is a partial side sectional view of fig. 3.

Fig. 5 is a schematic structural view of the linkage assembly.

1-a storage housing; 2-a dispersive delivery chamber; 3-a connecting seat; 4-a chute; 5, a sliding plate; 6-a dispersion tank; 7-sieve plate; 8, a first motor; 9-an output cavity; 10-a roll shaft; 11-strip body; 12-a spreading mechanism; 13-a movable frame; 14, a second motor; 15-a rack; 16-a drive gear; 17-a guide groove; 18-a swivel; 19-a trench; 20-a linkage assembly; 121-a mounting housing; 122-a mounting groove; 123-motor III; 124-a first transmission gear; 125-driving gear two; 126-gear chamber; 127-a drive roll; 128-a conveyor belt; 129-a support plate; 1210-driven rollers; 1211-an output port; 1212-bar scraping one; 1213-bar II; 201-linkage shaft; 202-bearings.

The specific implementation mode is as follows:

as shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: a metal powder flexible spreading device for additive manufacturing comprises a storage shell 1, a dispersing and conveying cavity 2, a connecting seat 3, a sliding groove 4, a sliding plate 5, a dispersing groove 6, a sieve plate 7, a first motor 8, an output cavity 9, a roller shaft 10, a strip body 11, a spreading mechanism 12, a movable frame body 13, a second motor 14, a rack 15, a driving gear 16, a guide groove 17, a rotating body 18, a groove 19 and a linkage assembly 20; the top of the connecting seat 3 is fixedly connected with a storage shell 1; the dispersing and conveying cavity 2 is arranged inside the upper side of the connecting seat 3, an opening on the upper side of the dispersing and conveying cavity 2 is communicated with an outlet on the lower side of the storage shell 1, and a transverse sliding groove 4 is arranged on the lower side of the dispersing and conveying cavity 2; the sliding plate 5 is transversely movably connected inside the sliding groove 4, the sieve plate 7 is fixedly connected inside the lower side of the sliding plate 5, the plurality of dispersing grooves 6 are formed in the upper surface of the sliding plate 5, and the lower sides of the dispersing grooves 6 are connected with the upper side of the sieve plate 7, so that the metal powder in the dispersing grooves 6 can be screened through the sieve plate 7, and the influence on the quality of metal powder supply due to caking of the metal powder is avoided; the first motor 8 is fixedly connected to the inner part of the left side of the connecting seat 3; the output cavity 9 is arranged inside the lower side of the storage shell 1, an opening on the upper side of the output cavity 9 is communicated with an outlet on the lower side of the dispersing and conveying cavity 2, and a roll shaft 10 is movably connected to the center inside the output cavity 9; the center of the left side of the roll shaft 10 is fixedly connected with an output shaft at the right side of the motor I8, and a plurality of strip bodies 11 are uniformly and fixedly connected to the outer surface of the roll shaft 10; the rotating body 18 is movably connected inside the right side of the connecting seat 3, the center of the rotating body 18 is fixedly connected outside the right side of the roller shaft 10, and the surface of the rotating body 18 is provided with the groove 19, so that the groove 19 can drive the linkage assembly 20 and the sliding plate 5 to transversely and repeatedly move while the rotating body 18 rotates, the number of driving parts can be reduced, and the synchronism of screening and conveying of metal powder is ensured; the top of the linkage assembly 20 is fixedly connected to the right lower side of the sliding plate 5, and the outer part of the lower side of the linkage assembly 20 is movably connected to the inner part of the groove 19; the guide groove 17 is longitudinally arranged in the lower side of the output cavity 9, a longitudinal movable frame body 13 is movably connected in the guide groove 17, and a longitudinal spreading mechanism 12 is fixedly connected in the movable frame body 13; a longitudinal rack 15 is fixedly connected to the lower right side of the frame body 13; the second motor 14 is fixedly connected inside the lower right side of the connecting seat 3, a driving gear 16 is fixedly connected to an output shaft on the upper side of the second motor 14, and the driving gear 16 is connected with the rack 15.

As shown in fig. 3 and 4, the specific structure of the spreading mechanism 12 includes a mounting housing 121, a mounting groove 122, a motor three 123, a transmission gear one 124, a transmission gear two 125, a gear cavity 126, a driving roller 127, a conveying belt 128, a supporting plate 129, a driven roller 1210, an output port 1211, a first scraping strip 1212 and a second scraping strip 1213; a mounting groove 122 is formed in the upper inner portion of the mounting shell 121, a third motor 123 is fixedly connected to the outer portion of the lower left rear side of the mounting shell 121, and a gear cavity 126 is formed in the rear left inner portion of the mounting shell 121; the first transmission gear 124 is movably connected to the lower side of the gear cavity 126, and the center of the first transmission gear 124 is fixedly connected to an output shaft of the third motor 123; the driving roller 127 is movably connected to the left side of the mounting groove 122; the second transmission gear 125 is movably connected to the upper side of the gear cavity 126, the center of the second transmission gear 125 is fixedly connected with the outer part of the rear side of the driving roller 127, and the lower side tooth part of the second transmission gear 125 is connected with the upper side tooth part of the first transmission gear 124; the driven roller 1210 is movably connected to the right side of the mounting groove 122, and the driven roller 1210 is connected with the driving roller 127 through a conveying belt 128; the supporting plate 129 is fixedly connected to the upper side of the mounting groove 122, and the top surface of the supporting plate 129 is connected with the top surface of the inner side of the conveying belt 128; the output port 1211 is arranged at the lower right side of the mounting groove 122; the first scraping strip 1212 is located outside the lower right side of the output 1211, and the top of the first scraping strip 1212 is fixedly connected to the right side of the bottom surface of the mounting housing 121; the second scraping strip 1213 is located outside the lower left side of the output 1211, and the top of the second scraping strip 1213 is fixedly connected to the right side of the bottom surface of the mounting housing 121.

The third motor 123 is a servo motor or a stepping motor; the top surface of the supporting plate 129 is a smooth surface; the lower sides of the first scraping strip 1212 and the second scraping strip 1213 are both in a sharp-angled shape; the first motor 8 and the second motor 14 are both servo motors or stepping motors.

As shown in fig. 5, the specific structure of the linkage assembly 20 includes a linkage shaft 201 and a bearing 202; the outside of the lower side of the linkage shaft 201 is fixedly connected with the inside of the bearing 202, and the outside of the bearing 202 is movably connected with the inside of the groove 19, and the bearing 202 is in contact connection with the inner wall of the groove 19, so that the friction force during working is reduced.

Wherein, the opening part at the upper side of the storage shell 1 is provided with a cover, thereby avoiding the metal powder inside the storage shell 1 from being polluted during working.

The using state of the invention is as follows: the invention has the advantages of reasonable and simple structure, low production cost and convenient installation, when in use, firstly, metal powder is added into the storage shell 1, then the first motor 8 and the second motor 14 are started, the first motor 8 can drive the roller shaft 10 and the rotating body 18 to rotate, the rotation of the rotating body 18 drives the sliding plate 5 to wholly vibrate left and right through the groove 19 and the linkage assembly 20, thereby facilitating the metal powder in the storage shell 1 to enter all the dispersing grooves 6 and uniformly fall after being screened through the sieve plate 7, the rotation of the roller shaft 10 and the strip body 11 can uniformly throw the falling metal powder onto the conveying belt 128, ensuring the subsequent spreading uniformity and avoiding the loss of the metal powder, and the second motor 14 can drive the movable frame body 13 and the spreading mechanism 12 to wholly move longitudinally through the driving gear 16 and the rack 15 for spreading operation, the spreading mechanism 12 arranged here can not only uniformly convey the metal powder to the spreading position through the conveying belt 128 for spreading, but also does not influence the continuous supply of the metal powder, so that the defect of the metal powder during spreading is avoided, and the additionally arranged first scraping strip 1212 and the second scraping strip 1213 can further perform the spreading operation on the metal powder after falling, thereby improving the spreading quality of the metal powder.

In the case of the control mode of the invention, which is controlled by manual actuation or by means of existing automation techniques, the wiring diagram of the power elements and the provision of power are known in the art and the invention is primarily intended to protect the mechanical means, so that the control mode and wiring arrangement are not explained in detail in the present invention.

In the description of the invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "two ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the invention is understood by those skilled in the art according to specific situations.

While there have been shown and described what are at present considered the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.