3D printing base scraping device

Abstract

The utility model discloses a 3d printing base scraping device, which relates to the technical field of 3d printing and comprises a connecting block, a fixed seat, a dust collector, a movable arm, a rotary scraping mechanism, a guide post, an electric telescopic rod, a longitudinal seat, a connecting plate, a universal pipe, a dust collection pipe, a long groove, a rack, a driving gear and a motor I, the base cleaning device has the advantages of being reasonable and simple in structure, low in production cost and convenient to install, rotation, lifting and transverse moving actions of the scraper can be accurately controlled through cooperative work of the second motor, the electric telescopic rod and the first motor, comprehensive cleaning of a base is achieved, and the base cleaning requirement is met; the dust collector can collect scraped chippings through the dust collection pipe and the universal pipe, and the situation that the chippings pollute the working environment is effectively avoided; the elastic shield on the lower side of the outer shell of the rotary scraping mechanism can play a role in protection, the concave-convex elastic sleeve can ensure buffering during transmission, and damage caused by rigid contact between the scraper and the base is avoided.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a 3D printing base scraping device. Background Technology

[0002] In the field of 3D printing technology, especially in Selective Laser Melting (SLM) technology, there are unique process characteristics and requirements. SLM is a technology that utilizes the complete melting and solidification of metal powder under the thermal action of a laser beam to form a shape. The resulting products possess complete density and excellent mechanical properties, making it suitable for small-batch, personalized production of products with complex internal structures—a feat difficult to achieve with traditional processes. In the SLM process, metal powder melts and solidifies on a base fixed in a forming cylinder under the action of a laser. The forming cylinder and base move together to gradually form the part. Before each laser operation, a scraper is needed to scrape powder into the forming cylinder to ensure full powder coverage. However, after printing, when removing the printed object from the base, the melting and solidification of the contact area between the base and the object under laser action easily leaves solidified residue on the top of the base. Current cleaning methods mostly involve manual cleaning using a scraper. This method has many drawbacks. On the one hand, manual operation is extremely inconvenient. During the cleaning process, operators need to be in close contact with the scraper and the base, which can easily lead to safety accidents due to improper operation, such as scraper cuts to the hands. On the other hand, manual cleaning cannot ensure a complete and thorough removal of residues from the top of the base, resulting in unsatisfactory cleaning effects. This not only affects the subsequent performance of the base but also reduces the efficiency of the entire 3D printing workflow, extends the production cycle, and increases production costs. Although there are Chinese utility model patents, such as CN 220679376 U, which disclose a scraping device for laser 3D printer bases, some limitations or unresolved problems still exist. This has made the research and development of a more efficient, safer, and better cleaning device for 3D printing bases increasingly urgent. The 3D printing base scraping device of this utility model was developed to overcome the shortcomings of existing technologies and meet the actual needs of 3D printing base cleaning. Utility Model Content

[0003] The purpose of this invention is to provide a 3D printing base scraping device to solve the above-mentioned problems, which solves the problems of inconvenient manual operation, safety hazards, poor cleaning effect and low work efficiency in the existing 3D printing base cleaning.

[0004] To address the aforementioned problems, this utility model provides a technical solution: a 3D printing base scraping device, comprising a base, a connecting block, a fixed base, a vacuum cleaner, a movable arm, a rotary scraping mechanism, a guide column, an electric telescopic rod, a longitudinal seat, a connecting plate, a universal tube, a vacuum tube, a long groove, a rack, a drive gear, and a motor; the lower right side of the fixed base is fixedly connected to the center left side of the base via the connecting block, and a transverse movable arm is movably connected inside the upper side of the fixed base; a vacuum cleaner is fixedly connected to the lower left side of the movable arm, and the right end of the movable arm is fixedly connected to the center left side of the longitudinal seat; a transverse long groove is formed on the top surface of the movable arm; the longitudinal seat is movable in the vertical guide holes at both the front and rear. The system is connected to guide posts, and an electric telescopic rod is fixedly connected to the center of the longitudinal seat. The front and rear positions of the top surface of the connecting plate are fixedly connected to the bottom of the corresponding guide posts. The center of the top surface of the connecting plate is fixedly connected to the lower end of the electric telescopic rod. A rotating scraping mechanism is fixedly connected to the bottom of the connecting plate, and the upper left opening of the rotating scraping mechanism is connected to the right inlet of the suction pipe through a universal tube. The suction pipe is fixedly connected to the lower interior of the movable arm, and the left outlet of the suction pipe is connected to the inlet of the vacuum cleaner. The rack is fixedly connected to the side wall of the long groove. A motor is fixedly connected to the center of the upper side of the fixed seat, and a drive gear is fixedly connected to the lower output shaft of the motor, and the drive gear is connected to the rack.

[0005] Preferably, the rotary scraping mechanism includes a housing, a mounting cavity, a scraper, a connecting sleeve, an inner groove, a concave-convex elastic sleeve, an outer protrusion, a drive shaft, a second motor, an elastic cover, and a dust suction hole. The housing has a mounting cavity inside, with a dust suction hole on the upper left side. The outer opening of the dust suction hole connects to the right opening of a universal joint. The second motor is fixedly connected to the outside of the housing. The drive shaft is movably connected to the center of the mounting cavity, and one side of the drive shaft is fixedly connected to the output shaft of the second motor. Several outer protrusions are provided around the outside of the drive shaft. Several connecting sleeves are included. Several connecting sleeves are arranged longitudinally and movably connected to the outside of the drive shaft. Several scrapers are fixedly connected to the outside of each connecting sleeve. Several inner grooves are opened on the inner wall of each connecting sleeve, and the inner grooves are respectively located outside the corresponding outer grooves. There are several concave-convex elastic sleeves, which are respectively disposed between the inner side of the corresponding connecting sleeve and the outside of the drive shaft. The outer protrusions of the concave-convex elastic sleeves are respectively located inside the corresponding inner grooves, and the inner grooves of the concave-convex elastic sleeves are respectively located outside the corresponding outer grooves. The elastic cover is fixedly connected to the lower edge of the outer shell.

[0006] Preferably, the concave-convex elastic sleeve is made of rubber material.

[0007] Preferably, the elastic shield is made of rubber material.

[0008] Preferably, the second motor is a servo motor or a variable frequency motor.

[0009] Preferably, the motor is a servo motor or a stepper motor.

[0010] The beneficial effects of this utility model are: (1) This utility model has the characteristics of reasonable and simple structure, low production cost and convenient installation. Through the coordinated work of motor 2, electric telescopic rod and motor 1, the rotation, lifting and lateral movement of the scraper can be precisely controlled to achieve comprehensive cleaning of the base and meet the base cleaning requirements.

[0011] (2) The vacuum cleaner provided by this utility model can collect the scraped debris through the suction pipe and the universal tube, effectively avoiding the pollution of the working environment caused by the debris.

[0012] (3) The elastic cover on the lower side of the outer shell of the rotary scraping mechanism of this utility model can play a protective role. The concave and convex elastic sleeve can ensure buffering during transmission and avoid damage caused by rigid contact between the scraper and the base. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the rotating scraping mechanism.

[0015] Figure 3 This is a side view of the connecting sleeve.

[0016] 1-Base; 2-Connecting block; 3-Fixed seat; 4-Vacuum cleaner; 5-Moving arm; 6-Rotating scraping mechanism; 7-Guide column; 8-Electric telescopic rod; 9-Vertical seat; 10-Connecting plate; 11-Universal tube; 12-Suction pipe; 13-Long groove; 14-Rack; 15-Drive gear; 16-Motor one; 61-Outer shell; 62-Mounting cavity; 63-Scraper; 64-Connecting sleeve; 65-Inner groove; 66-Concave-convex elastic sleeve; 67-Outer convex groove; 68-Drive shaft; 69-Motor two; 610-Elastic protective cover; 611-Suction hole. Detailed Implementation

[0017] like Figure 1As shown, this specific embodiment adopts the following technical solution: a 3D printing base scraping device, including a base 1, and further including a connecting block 2, a fixed base 3, a vacuum cleaner 4, a movable arm 5, a rotary scraping mechanism 6, a guide column 7, an electric telescopic rod 8, a longitudinal seat 9, a connecting plate 10, a universal tube 11, a vacuum tube 12, a long groove 13, a rack 14, a drive gear 15, and a motor 16; the lower right side of the fixed base 3 is fixedly connected to the center left side of the base 1 through the connecting block 2, and a transverse movable arm 5 is movably connected inside the upper side of the fixed base 3; a vacuum cleaner 4 is fixedly connected to the lower left side of the movable arm 5, and the right end of the movable arm 5 is fixedly connected to the center left side of the longitudinal seat 9, and a transverse long groove 13 is opened on the top surface of the movable arm 5; guide columns are movably connected to the vertical guide holes arranged at the front and rear of the longitudinal seat 9. The column 7 and the longitudinal seat 9 are internally fixedly connected to an electric telescopic rod 8; the front and rear positions of the top of the connecting plate 10 are fixedly connected to the bottom of the corresponding guide column 7, the center of the top surface of the connecting plate 10 is fixedly connected to the lower end of the electric telescopic rod 8, the bottom of the connecting plate 10 is fixedly connected to a rotating scraping mechanism 6, and the upper left opening of the rotating scraping mechanism 6 is connected to the right inlet of the suction pipe 12 through a universal tube 11; the suction pipe 12 is fixedly connected to the lower interior of the movable arm 5, and the left outlet of the suction pipe 12 is connected to the inlet of the vacuum cleaner 4; the rack 14 is fixedly connected to the side wall of the long groove 13; the motor 16 is fixedly connected to the upper center of the fixed seat 3, and the lower output shaft of the motor 16 is fixedly connected to a drive gear 15, which is connected to the rack 14.

[0018] like Figure 2 and Figure 3As shown, the specific structure of the rotary scraping mechanism 6 includes an outer shell 61, a mounting cavity 62, a scraper 63, a connecting sleeve 64, an inner groove 65, a concave-convex elastic sleeve 66, an outer protrusion 67, a drive shaft 68, a second motor 69, an elastic cover 610, and a dust suction hole 611; the outer shell 61 has a mounting cavity 62 inside, and a dust suction hole 611 is opened on the upper left side of the mounting cavity 62, while the outer opening of the dust suction hole 611 is connected to the right opening of the universal tube 11. The second motor 69 is fixedly connected to the outside of the outer shell 61; the drive shaft 68 is movably connected to the center of the mounting cavity 62, and one side center of the drive shaft 68 is fixedly connected to the output shaft of the second motor 69. Several outer protrusions 67 are provided around the outside of the drive shaft 68; There are several connecting sleeves 64, which are arranged longitudinally and movably connected to the outside of the drive shaft 68. Several scrapers 63 are fixedly connected to the outside of each connecting sleeve 64. Several inner grooves 65 are opened on the inner wall of each connecting sleeve 64, and the inner grooves 65 are respectively located outside the corresponding outer protrusions 67. There are several concave-convex elastic sleeves 66, which are respectively disposed between the inner side of the corresponding connecting sleeve 64 and the outside of the drive shaft 68. The outer protrusions of the concave-convex elastic sleeves 66 are respectively located inside the corresponding inner grooves 65, and the inner grooves of the concave-convex elastic sleeves 66 are respectively located outside the corresponding outer protrusions 67. The elastic cover 610 is fixedly connected to the lower periphery of the outer shell 61.

[0019] The concave-convex elastic sleeve 66 is made of rubber material; the elastic cover 610 is made of rubber material; the second motor 69 is a servo motor or a frequency converter motor, so that the speed of the second motor 69 can be easily controlled by existing technology; the first motor 16 is a servo motor or a stepper motor, so that the first motor 16 can be easily controlled by existing automation technology.

[0020] The utility model is used as follows: It has a reasonable and simple structure, low production cost, and convenient installation. During scraping, firstly, motor 69 starts, driving the transmission shaft 68, which is fixedly connected to its output shaft, to rotate in the center of the mounting cavity 62. Since the transmission shaft 68 has an external convex groove 67 around its outer perimeter, and the connecting sleeve 64 has an internal groove 65 on its inner wall, and a concave-convex elastic sleeve 66 is provided between them, with the external protrusion of the concave-convex elastic sleeve 66 located inside the internal groove 65 and the internal groove located outside the external convex groove 67, the rotation of the transmission shaft 68 drives the connecting sleeve 64 to rotate through the concave-convex elastic sleeve 66, thereby causing the scraper 63 fixedly connected to the outside of the connecting sleeve 64 to open. The rotation begins, followed by the activation of the electric telescopic rod 8. Its lower end pushes the connecting plate 10, which is fixedly connected to it, downwards. Because the front and rear positions of the connecting plate 10 are fixedly connected to the bottom of the corresponding guide post 7, and the guide post 7 is movably connected in the vertical guide holes provided at the front and rear of the longitudinal seat 9, the connecting plate 10 can move downwards stably, driving the rotating scraping mechanism 6 fixedly connected to the bottom to move downwards, causing the rotating scraper 63 to approach the base 1 for scraping. Then, the motor 16 starts, and the drive gear 15 fixedly connected to the lower output shaft of the motor 16 begins to rotate. Since the drive gear 15 is connected to the rack 14 fixedly connected to the side wall of the long groove 13... Furthermore, a transverse long groove 13 is provided on the top surface of the movable arm 5, and the right end of the movable arm 5 is fixedly connected to the center of the left side of the longitudinal seat 9. Therefore, the motor 16 can drive the movable arm 5 and its connected longitudinal seat 9 and other components to move laterally, thereby causing the rotating scraper 63 to move laterally on the base 1, achieving a comprehensive cleaning of the base 1. During the scraping process, the vacuum cleaner 4 is provided to collect the scraped debris through the vacuum pipe 12 and the universal tube 11. The vacuum pipe 12 is fixedly connected to the lower inside of the movable arm 5, and its left outlet is connected to the inlet of the vacuum cleaner 4. The right inlet is connected to the inner shell 61 of the rotating scraping mechanism 6 through the universal tube 11. The dust extraction hole 611 on the upper left side of the cavity 62 is connected to the outer opening, which can prevent debris from polluting the working environment. At the same time, the elastic guard 610 (made of rubber material) fixedly connected to the lower edge of the outer shell 61 of the rotating scraping mechanism 6 can play a certain protective role. The concave and convex elastic sleeve 66 (made of rubber material) can ensure a certain buffer during transmission and prevent the scraper 63 from rigidly contacting the base 1 and causing damage. The second motor 69 is a servo motor or a frequency conversion motor, and the first motor 16 is a servo motor or a stepper motor, which can precisely control the rotation, lifting and lateral movement of the scraper 63 to meet the needs of comprehensive cleaning of the base 1.

[0021] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

[0024] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. A 3D printing base scraping device, comprising a base (1), characterized in that: It also includes a connecting block (2), a fixed seat (3), a vacuum cleaner (4), a movable arm (5), a rotating scraping mechanism (6), a guide column (7), an electric telescopic rod (8), a longitudinal seat (9), a connecting plate (10), a universal tube (11), a vacuum tube (12), a long slot (13), a rack (14), a drive gear (15), and a motor (16). The lower right side of the fixed seat (3) is fixedly connected to the center of the left side of the base (1) via the connecting block (2), and the upper side of the fixed seat (3) is movably connected to a transverse movable arm (5). A vacuum cleaner (4) is fixedly connected to the lower left side of the movable arm (5), and the right end of the movable arm (5) is fixedly connected to the center of the left side of the longitudinal seat (9). A transverse long groove (13) is opened on the top surface of the movable arm (5). The longitudinal seat (9) is provided with guide posts (7) in the vertical guide holes at the front and rear, and an electric telescopic rod (8) is fixedly connected in the center of the longitudinal seat (9). The front and rear positions of the top of the connecting plate (10) are fixedly connected to the bottom of the corresponding guide post (7), the center of the top surface of the connecting plate (10) is fixedly connected to the lower end of the electric telescopic rod (8), the bottom of the connecting plate (10) is fixedly connected to a rotating scraping mechanism (6), and the upper left opening of the rotating scraping mechanism (6) is connected to the right inlet of the vacuum pipe (12) through the universal tube (11); The suction pipe (12) is fixedly connected to the inside of the lower side of the movable arm (5), and the left outlet of the suction pipe (12) is connected to the inlet of the vacuum cleaner (4); The rack (14) is fixedly connected to the side wall of the long groove (13); The motor (16) is fixedly connected to the center of the upper side of the fixed base (3). The drive gear (15) is fixedly connected to the lower output shaft of the motor (16), and the drive gear (15) is connected to the rack (14).

2. The 3D printing base scraping device according to claim 1, characterized in that: The specific structure of the rotary scraping mechanism (6) includes an outer shell (61), a mounting cavity (62), a scraper (63), a connecting sleeve (64), an inner groove (65), a concave-convex elastic sleeve (66), an outer convex groove (67), a drive shaft (68), a second motor (69), an elastic protective cover (610), and a dust suction hole (611). The outer shell (61) has an installation cavity (62) inside, and a dust suction hole (611) is opened on the upper left side of the installation cavity (62). The outer opening of the dust suction hole (611) is connected to the right opening of the universal tube (11). A motor (69) is fixedly connected to the outside of the outer shell (61). The drive shaft (68) is movably connected to the center of the mounting cavity (62). The center of one side of the drive shaft (68) is fixedly connected to the output shaft of the second motor (69). Several external protrusions (67) are provided around the outside of the drive shaft (68). There are several connecting sleeves (64), which are arranged longitudinally and are movably connected to the outside of the drive shaft (68). Several scrapers (63) are fixedly connected to the outside of each of the connecting sleeves (64). Several inner grooves (65) are opened on the inner wall of each of the connecting sleeves (64), and the inner grooves (65) are respectively located outside the corresponding outer protrusions (67). There are several concave-convex elastic sleeves (66), and several concave-convex elastic sleeves (66) are respectively disposed between the inner side of the corresponding connecting sleeve (64) and the outer side of the transmission shaft (68). The outer protrusions of several concave-convex elastic sleeves (66) are respectively located inside the corresponding inner groove (65), and the inner grooves of several concave-convex elastic sleeves (66) are respectively located outside the corresponding outer protrusion (67). The elastic shield (610) is fixedly connected to the lower perimeter of the outer shell (61).

3. The 3D printing base scraping device according to claim 2, characterized in that: The concave-convex elastic sleeve (66) is made of rubber material.

4. The 3D printing base scraping device according to claim 2, characterized in that: The elastic shield (610) is made of rubber material.

5. The 3D printing base scraping device according to claim 2, characterized in that: The second motor (69) is a servo motor or a variable frequency motor.

6. The 3D printing base scraping device according to claim 1, characterized in that: The motor (16) is a servo motor or a stepper motor.

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