High-precision scraper mechanism and 3D printing equipment

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a high-precision scraper mechanism and 3D printing equipment. The transmission part comprises a driving part, a lead screw, a movable block, a sliding block and a guide rail part, the guide rail part is fixedly connected to the forming part, the sliding block is in sliding connection with the guide rail, the sliding block is fixedly connected with the movable block, the lead screw penetrates through the movable block, and the driving part drives the lead screw to be connected; by designing the scraper mechanism, the problems that the scraper mechanism is large in occupied space and poor in precision are solved, the overall structure is compact, the occupied space is small, the slipping phenomenon is effectively eliminated, and the transmission precision is improved; and moreover, the linear guide rail is adopted for guiding, so that the linear guide rail and the screw rod are matched to form a transmission system, the condition of tension degree of the belt between belt wheels is avoided, transmission delay is effectively avoided, the stability of scraper movement is improved, and the plane precision of a scraping surface is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and specifically relates to a high-precision scraper mechanism and 3D printing equipment. Background Art

[0002] The structure of ceramic slurry 3D printing equipment is mainly composed of a scraper mechanism, a molding Z axis, an optical path system, a frame, etc. The function of the scraper mechanism is to make a two-way reciprocating motion on the molding surface to realize the scraping action and ensure the plane accuracy of the scraping surface. In conjunction with the up and down movement of the molding Z axis, the thickness of each scraping layer meets the process requirements and ensures the consistency of the thickness of each scraping layer, avoiding poor printing quality and poor printing accuracy of ceramic parts due to large thickness differences between printing layers.

[0003] In the prior art, the scraper transmission structure generally adopts belt drive. The belt is tensioned through pulleys at both ends. One end is a driving wheel and the other end is a driven wheel. The motor drives the driving wheel to rotate, and then drives the belt to rotate. The pitch diameters of the driving wheel and the driven wheel are equal. The belt moves linearly between the driving wheel and the driven wheel. The belt and the scraper are connected by a connecting block, thereby driving the scraper to move.

[0004] However, this transmission mode has the following problems:

[0005] 1. The structure occupies a large space. Since this transmission method requires the arrangement of a reducer and a pulley, the space occupied by the entire transmission structure will increase, which will lead to a larger size of the equipment.

[0006] 2. Low transmission accuracy. The belt is prone to slipping during transmission, resulting in poor transmission accuracy.

[0007] 3. Transmission delay. Since the belt is in a tensioned state, after a long period of use, the belt pitch length will be elongated, and the tension of the belt between the pulleys will be poor, resulting in transmission delay.

[0008] Therefore, it is urgent to design a scraper mechanism with high precision and compact structure. Utility Model Content

[0009] In order to address the deficiencies of the prior art, the utility model provides a high-precision scraper mechanism and a 3D printing device. By designing the scraper mechanism, the problems of the scraper mechanism occupying a large space and having poor precision are solved, the reducer is eliminated, and a small-lead screw drive is adopted to avoid the low-speed creeping of the motor. The motor drives the screw, and the screw converts the rotational motion into the reciprocating linear motion of the scraper. The overall structure is compact, occupies a small space, and effectively eliminates the slippage phenomenon, thereby improving the transmission accuracy. Furthermore, by adopting a linear guide rail for guidance, the linear guide rail and the screw rod cooperate to form a transmission system, and there is no tension of the belt between the pulleys, which effectively avoids transmission delays, improves the stability of the scraper movement, and ensures the plane accuracy of the scraping surface.

[0010] The technical effect to be achieved by the utility model is achieved through the following technical solutions:

[0011] A high-precision scraper mechanism comprises a forming component, a transmission component and a scraper component, wherein the transmission component is connected to the forming component, and the scraper component is slidably connected to the transmission component;

[0012] The transmission component includes a driving part, a screw rod, a movable block, a slider and a guide rail part. The guide rail part is fixedly connected to the forming part, the slider is slidably connected to the guide rail, the slider is fixedly connected to the movable block, and the screw rod passes through the movable block. The driving part drives the screw rod to connect.

[0013] In the utility model, the operation process of the scraper mechanism is as follows: start the driving part, drive the screw to rotate, drive the movable block to perform linear reciprocating motion, and move the slider on the guide rail. The movement of the slider drives the scraper component to perform corresponding scraping action on the forming component. The screw is driven to rotate by the driving part, and then the screw converts the rotational motion into the reciprocating linear motion of the scraper. The overall structure is compact and simple, occupies a small space, effectively eliminates the slip phenomenon, and improves the transmission accuracy. By adopting the coordinated operation of the guide rail sliders on both sides, the stability of the movement of the scraper component can be guaranteed, and the linear guide rail is used for guidance, so that the linear guide rail and the screw rod cooperate to form a transmission system, and there is no tension between the belts between the pulleys, which effectively avoids transmission delays, improves the stability of the scraper movement, and ensures the plane accuracy of the scraping surface.

[0014] Furthermore, the guide rail portion includes a first guide rail and a second guide rail, the first guide rail is arranged in parallel with the second guide rail, and the first guide rail is fixedly connected to one side of the forming component, and the second guide rail is fixedly connected to the other side of the forming component. By arranging the first guide rail and the second guide rail in parallel, the stability of the operation of the scraper component is ensured, the uniformity of the scraper component during the scraping process is achieved, and the quality of the scraped material is effectively improved.

[0015] Furthermore, the driving part includes a motor and a fixing seat, the fixing seat is arranged adjacent to the guide rail part and fixedly connected to one side of the forming component, and the motor is fixedly connected to the fixing seat. By assembling the fixing seat between the motor and the lead screw, the connection stability between the motor and the lead screw can be improved, and the fixing seat is arranged adjacent to the guide rail part, the positions of the components are compact and flexible, and the space utilization rate is high.

[0016] Furthermore, the fixing seat includes a seat body, a first connection hole and a second connection hole, the first connection hole and the second connection hole are relatively coaxially arranged, the first connection hole is arranged on one side of the seat body corresponding to the motor, and the second connection hole is arranged on the other side of the seat body corresponding to the screw rod. The first connection hole and the second connection hole are relatively coaxially arranged to ensure that the motor and the screw rod are connected on the same axis, thereby ensuring the efficiency of rotation and reducing the energy consumption of rotation loss.

[0017] Furthermore, the movable block includes a block body and a first limit block, wherein the first limit block is fixedly connected to a side of the block body away from the driving part. This arrangement can prevent the movable block from exceeding the moving range, improve the safety and reliability of movement, and ensure smooth and normal movement.

[0018] Furthermore, the movable block further comprises a second limit block, which is fixedly connected to a side of the block body close to the driving part. This arrangement prevents the movable block from being too close to the motor side, restricts the movable block to move within a safe range, and improves the safety of movement.

[0019] Furthermore, the molding component includes a base and a molding plate, the molding plate is connected to the base, and the base is connected to the guide rail. The base is used to support the molding plate and the transmission component. The molding plate is used to assist the 3D printing operation. The scraper component performs a linear reciprocating motion on the molding plate to achieve a scraping operation, thereby performing 3D printing. The base can effectively ensure the stability of the scraper mechanism and improve the printing quality.

[0020] Furthermore, the molding plate includes a plate body, a material trough, a printing hole and a discharge hole, wherein the material trough is sunken in the plate body, the printing hole corresponds to the material trough and passes through the plate body, the discharge hole corresponds to the material trough and passes through the plate body, and the discharge hole and the printing hole are arranged in parallel. Among them, the printing hole is used for the vertical movement of the printing layer, which is convenient for the scraper to perform layer-by-layer scraping and printing. The material trough is used to store excess slurry scraped by the scraper outside the molding surface to prevent the slurry from overflowing to other areas. The discharge hole is used to discharge excess slurry to the corresponding position. Through this arrangement, the cleanliness of the environment during the operation of the scraper mechanism is ensured, the pollution of the surrounding environment by excess slurry is reduced, the number of cleaning times is effectively reduced, and the printing operation efficiency is improved.

[0021] Furthermore, the scraper component includes a connecting plate, a scraper frame and a blade body, wherein the connecting plate is fixedly connected to the slider, the two ends of the scraper frame are fixedly connected to the connecting plate, and the blade body is fixedly connected to the scraper frame corresponding to the printing hole. Through this arrangement, the connecting plate indirectly lifts the scraper frame to a suitable position, ensuring that the scraper runs smoothly and stably, and ensuring the scraping material quality.

[0022] The 3D printing device includes the high-precision scraper mechanism as described above. The 3D printing device is configured to ensure the smoothness of the scraper movement during the printing process, the plane accuracy of the scraping surface, and the printing quality.

[0023] To sum up, the utility model has at least the following benefits: by designing the scraper mechanism, the problem of the scraper mechanism occupying a large space and having poor precision is solved, the reducer is eliminated, and a small lead screw transmission is adopted to avoid the low-speed creeping of the motor. The motor drives the screw, and the screw converts the rotational motion into the reciprocating linear motion of the scraper. The overall structure is compact, occupies a small space, and effectively eliminates the slippage phenomenon, thereby improving the transmission accuracy; furthermore, by adopting a linear guide rail, the linear guide rail and the screw rod cooperate to form a transmission system, and there is no tension of the belt between the pulleys, which effectively avoids transmission delays, improves the smoothness of the scraper movement, and ensures the plane accuracy of the scraping surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0026] Figure 3 This is a schematic diagram of the structure of the movable block in Embodiment 1 of the present utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the molding component in Example 2 of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the scraper component in Example 2 of the utility model (excluding the scraper body).

[0029] Markings in the figure: 1. Molding component, 11. Base, 12. Molding plate, 121. Plate body, 122. Material trough, 123. Printing hole, 124. Discharge hole; 2. Transmission component, 21. Driving part, 211. Motor, 212. Fixed seat, 22. Screw rod, 23. Movable block, 231. Block body, 232. First limit block, 233. Second limit block, 24. Slider, 25. Guide rail part, 251. First guide rail, 252. Second guide rail; 3. Scraper component, 31. Connecting plate, 32. Scraper holder. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please refer to the attached Figure 1 The utility model discloses a high-precision scraper mechanism, comprising a molding component 1, a transmission component 2 and a scraper component 3, wherein the transmission component 2 is connected to the molding component 1, and the scraper component 3 is slidably connected to the transmission component 2; the transmission component 2 comprises a driving part 21, a screw rod 22, a movable block 23, a slider 24 and a guide rail part 25, wherein the guide rail part 25 is fixedly connected to the molding component 1, the slider 24 is slidably connected to the guide rail, the slider 24 is fixedly connected to the movable block 23, and the screw rod 22 passes through the movable block 23, and the driving part 21 drives the screw rod 22 to connect.

[0034] In this embodiment, the operation process of the scraper mechanism is as follows: start the driving part 21, drive the screw rod 22 to rotate, drive the movable block 23 to perform linear reciprocating motion, and move the slider 24 on the guide rail. The movement of the slider 24 drives the scraper component 3 to perform corresponding scraping action on the forming component 1. The screw rod 22 is driven to rotate by the driving part 21, and then the screw rod 22 converts the rotational motion into the reciprocating linear motion of the scraper. The overall structure is compact and simple, occupies a small space, effectively eliminates the slip phenomenon, and improves the transmission accuracy. By adopting the coordinated operation of the guide rail sliders 24 on both sides, the stability of the movement of the scraper component 3 can be guaranteed, and the linear guide rail is used for guidance, so that the linear guide rail and the screw rod 22 cooperate to form a transmission system, and there is no tension between the belts between the pulleys, which effectively avoids transmission delays, improves the stability of the scraper movement, and ensures the plane accuracy of the scraping surface.

[0035] In one embodiment, the guide rail portion 25 includes a first guide rail 251 and a second guide rail 252, the first guide rail 251 and the second guide rail 252 are arranged in parallel, and the first guide rail 251 is fixedly connected to one side of the forming component 1, and the second guide rail 252 is fixedly connected to the other side of the forming component 1. By arranging the first guide rail 251 and the second guide rail 252 in parallel, the stability of the operation of the scraper component 3 is ensured, the uniformity of the scraper component 3 during the scraping process is achieved, and the quality of the scraped material is effectively improved.

[0036] In one embodiment, the driving part 21 includes a motor 211 and a fixing seat 212. The fixing seat 212 is arranged adjacent to the guide rail part 25 and fixedly connected to one side of the molding component 1. The motor 211 is fixedly connected to the fixing seat 212. By assembling the fixing seat 212 between the motor 211 and the lead screw 22, the connection stability between the motor 211 and the lead screw can be improved. The fixing seat 212 is arranged adjacent to the guide rail part 25, and the positions of the components are compact and flexible, and the space utilization rate is high.

[0037] In one embodiment, the fixing seat 212 includes a seat body, a first connection hole and a second connection hole, the first connection hole and the second connection hole are relatively coaxially arranged, the first connection hole is arranged on one side of the seat body corresponding to the motor 211, and the second connection hole is arranged on the other side of the seat body corresponding to the screw rod 22. The first connection hole and the second connection hole are relatively coaxially arranged to ensure that the motor 211 and the screw rod 22 are connected on the same axis, thereby ensuring the efficiency of rotation and reducing the energy consumption of rotation loss.

[0038] Please refer to the attached Figure 2-3 The movable block 23 includes a block body 231 and a first limit block 232, wherein the first limit block 232 is fixedly connected to a side of the block body 231 away from the driving part 21. The first limit block 232 is symmetrically arranged up and down. This arrangement can prevent the movable block 23 from exceeding the moving range, improve the safety and reliability of the movement, and ensure smooth and normal movement.

[0039] The movable block 23 also includes a second limit block 233, which is fixedly connected to the side of the block body 231 close to the driving part 21. Through this arrangement, the movable block 23 is prevented from being too close to the motor 211, and the movable block 23 is limited to move within a safe range, thereby improving the safety of movement.

[0040] Example 2

[0041] The difference between this embodiment and embodiment 1 is: Figure 4The molding component 1 includes a base 11 and a molding plate 12, the molding plate 12 is connected to the base 11, and the base 11 is connected to the guide rail 25. The base 11 is used to support the molding plate 12 and the transmission component 2. The molding plate 12 is used to assist the 3D printing operation. The scraper component 3 performs a linear reciprocating motion on the molding plate 12 to achieve a scraping operation, thereby performing 3D printing. The base 11 can effectively ensure the stability of the scraper mechanism operation and improve the printing quality.

[0042] The molding plate 12 includes a plate body 121, a material trough 122, a printing hole 123 and a discharge hole 124. The material trough 122 is sunken and arranged in the plate body 121. The printing hole 123 passes through the plate body 121 corresponding to the material trough 122. The discharge hole 124 passes through the plate body 121 corresponding to the material trough 122, and the discharge hole 124 is arranged in parallel with the printing hole 123. Among them, the printing hole 123 is used for the vertical movement of the printing layer, which is convenient for the scraper to scrape and print layer by layer. The material trough 122 is used to store the excess slurry scraped by the scraper outside the molding surface to prevent the slurry from overflowing to other areas. The discharge hole 124 is used to discharge the excess slurry to the corresponding position. Through this arrangement, the cleanliness of the environment during the operation of the scraper mechanism is guaranteed, the pollution of the surrounding environment by the excess slurry is reduced, the number of cleaning times is effectively reduced, and the printing operation efficiency is improved.

[0043] Please refer to the attached Figure 5 The scraper component 3 includes a connecting plate 31, a scraper frame 32 and a blade body. The connecting plate 31 is fixedly connected to the slider 24, the two ends of the scraper frame 32 are fixedly connected to the connecting plate 31, and the blade body is fixedly connected to the scraper frame 32 corresponding to the printing hole 123. Through this setting, the connecting plate 31 indirectly lifts the scraper frame 32 to a suitable position, ensuring that the scraper runs smoothly and stably, and ensuring the scraping material quality.

[0044] Example 3

[0045] The 3D printing device includes the high-precision scraper mechanism as described above. The 3D printing device is configured to ensure the smoothness of the scraper movement during the printing process, the plane accuracy of the scraping surface, and the printing quality.

[0046] In summary, the utility model has at least the following benefits: by designing the scraper mechanism, the problem of the scraper mechanism occupying a large space and having poor precision is solved, the reducer is eliminated, and a small lead screw transmission is adopted to avoid the low-speed creeping of the motor. The motor drives the screw, and the screw converts the rotational motion into the reciprocating linear motion of the scraper. The overall structure is compact, occupies a small space, and effectively eliminates the slippage phenomenon, thereby improving the transmission accuracy; furthermore, by adopting a linear guide rail, the linear guide rail and the screw rod cooperate to form a transmission system, and there is no tension of the belt between the pulleys, which effectively avoids transmission delays, improves the smoothness of the scraper movement, and ensures the plane accuracy of the scraping surface.

[0047] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A high-precision scraper mechanism, characterized in that: It comprises a forming component, a transmission component and a scraper component, wherein the transmission component is connected to the forming component, and the scraper component is slidably connected to the transmission component; The transmission component includes a driving part, a screw rod, a movable block, a slider and a guide rail part. The guide rail part is fixedly connected to the forming part, the slider is slidably connected to the guide rail, the slider is fixedly connected to the movable block, and the screw rod passes through the movable block. The driving part drives the screw rod to connect.

2. A high-precision scraper mechanism according to claim 1, characterized in that: The guide rail portion includes a first guide rail and a second guide rail, the first guide rail and the second guide rail are arranged in parallel, and the first guide rail is fixedly connected to one side of the forming component, and the second guide rail is fixedly connected to the other side of the forming component.

3. A high-precision scraper mechanism according to claim 1, characterized in that: The driving part comprises a motor and a fixing seat. The fixing seat is arranged adjacent to the guide rail part and fixedly connected to one side of the forming component. The motor is fixedly connected to the fixing seat.

4. A high-precision scraper mechanism according to claim 3, characterized in that: The fixing seat includes a seat body, a first connecting hole and a second connecting hole. The first connecting hole and the second connecting hole are relatively coaxially arranged. The first connecting hole is arranged on one side of the seat body corresponding to the motor, and the second connecting hole is arranged on the other side of the seat body corresponding to the screw rod.

5. A high-precision scraper mechanism according to claim 1, characterized in that: The movable block includes a block body and a first limiting block, wherein the first limiting block is fixedly connected to a side of the block body away from the driving part.

6. A high-precision scraper mechanism according to claim 5, characterized in that: The movable block further comprises a second limiting block, and the second limiting block is fixedly connected to a side of the block body close to the driving part.

7. A high-precision scraper mechanism according to claim 6, characterized in that: The forming component comprises a base and a forming plate, wherein the forming plate is connected to the base, and the base is connected to the guide rail portion.

8. A high-precision scraper mechanism according to claim 7, characterized in that: The forming plate includes a plate body, a material trough, a printing hole and a discharge hole. The material trough is sunken in the plate body, the printing hole passes through the plate body corresponding to the material trough, the discharge hole passes through the plate body corresponding to the material trough, and the discharge hole and the printing hole are arranged in parallel.

9. A high-precision scraper mechanism according to claim 8, characterized in that: The scraper component includes a connecting plate, a scraper frame and a blade body. The connecting plate is fixedly connected to the slider, two ends of the scraper frame are fixedly connected to the connecting plate, and the blade body is fixedly connected to the scraper frame corresponding to the printing hole.

10. 3D printing equipment, characterized in that It comprises a high-precision scraper mechanism as described in any one of claims 1-9.

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