Powder cleaning equipment for 3D printed parts

Abstract

The utility model relates to the technical field of 3D printing, in particular to powder cleaning equipment for 3D printed pieces. The powder cleaning equipment comprises a box body, a cover plate, a connecting plate and a vibrator, wherein a box opening is formed in the box body, one end of the cover plate is hinged to the box body, and the cover plate is provided with a first working position and a second working position; the connecting plate is arranged on the inner side of the cover plate and used for fixing the printing piece and / or the base plate. When the cover plate is located at the first working position, the printing piece is in an upward posture, and when the cover plate is located at the second working position, the cover plate seals the box opening, and the printing piece is in an inverted suspension or inclined posture. As the cover plate is in the horizontal posture at the first working position, when the printing piece is mounted on the powder cleaning equipment, the printing piece does not need to be inverted, and the operation difficulty of an operator is reduced. In addition, the printed piece is sealed in the box body in the powder cleaning process, so that the powder is effectively prevented from being in direct contact with air to prevent oxidation, and the influence of heavy dust on occupational safety during operation of staff is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a powder cleaning device for 3D printed parts. Background Art

[0002] 3D printing technology is a technology for manufacturing solid parts by the method of layer-by-layer material accumulation based on three-dimensional CAD data. In the field of 3D printing technology, metal 3D printing is the most widely used printing, which has the advantages of high material utilization rate and the ability to manufacture parts with complex shapes. However, after the blank is formed, due to the structural characteristics, it is difficult to clean these residual powders.

[0003] In the prior art, in order to solve the problem that the residual powder of 3D printed parts is difficult to clean, Chinese Patent (Publication No.: CN110434335A) discloses a "3D printed metal powder cleaning device", which includes a sealed housing, a skeleton, and a vibration device to clean the residual powder on the 3D printed parts through the vibration device.

[0004] Although this powder cleaning device can better clean the residual powder inside and outside the 3D printed parts, there are still some problems in use. First, when the device is working, it is necessary to clamp the substrate of the 3D printed part through a chuck to make the part in an inverted hanging posture, so that the powder is easily cleaned from the 3D printed part. Since the printed parts made of 3D metal powder are relatively heavy, when fixing the 3D printed part to the chuck, the operator needs to turn the printed part to an inverted posture and then fix it to the chuck, which is difficult for the operator to operate. Second, the vibration device and the 3D printed part are in the same sealed space in this scheme, which makes the cleaned dust accumulate on the vibration device and easily affects the working performance of the vibration device. Content of the Utility Model

[0005] Aiming at the above defects, the technical problem to be solved by the utility model is to provide a powder cleaning device for 3D printed parts, which can reduce the operation difficulty of installing the printed part on the powder cleaning device.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A powder cleaning device for 3D printed parts, comprising:

[0008] A box body, on which a box opening is provided;

[0009] A cover plate, one end of which is hinged to the box body, and the cover plate has a first working position and a second working position;

[0010] A connecting plate, which is arranged inside the cover plate and is used to fix the substrate and / or the printed part. When the cover plate rotates around the hinge end to the first working position, the printed part is in an upward posture. When the cover plate is in the second working position, the cover plate closes the box opening, and the printed part is in an inverted or inclined posture;

[0011] A vibrator, which is arranged on the connecting plate.

[0012] By adopting the above scheme, in the initial state, the cover plate is in the first working position and is in a horizontal state. The substrate of the 3D printed part is fixedly connected to the connecting plate. Since the bottom of the 3D printed part is connected to the substrate, the posture of the 3D printed part is upward at this time. After the substrate of the 3D printed part is fixedly connected to the connecting plate, the cover plate is adjusted to the second working position. At this time, the 3D printed part is in an inverted or inclined posture. The connecting plate is vibrated by the vibrator, and the connecting plate drives the 3D printed part to vibrate, thereby cleaning the residual powder on the 3D printed part. Since the cover plate is in a horizontal posture when in the first working position, it is not necessary to invert the printed part when installing the printed part on the powder cleaning device, reducing the operation difficulty of the operator. And during the process of cleaning the powder by driving the printed part to vibrate by the vibrator, since the printed part is in an inverted or inclined posture, the powder cleaned from the printed part is more likely to separate from the printed part and fall into the box body, improving the powder cleaning efficiency. In addition, since the cover plate closes the box opening of the box body, during the powder cleaning work, the powder is located in the internal space of the box body, thus avoiding harm to the human body caused by the powder. And since the printed part is enclosed in the box body during the powder cleaning process, it effectively prevents the powder from directly contacting the air and prevents oxidation.

[0013] The present utility model is further configured such that an avoidance hole is provided on the cover plate, the vibrator is arranged on the side of the connecting plate away from the box opening, and the vibrator is located in the avoidance hole. If the vibrator is installed inside the box body, the vibrator is likely to affect the connection between the substrate of the 3D printed part and the connecting plate, and the powder generated during the powder cleaning process is also likely to adhere to the vibrator. The vibrator is arranged outside the box, avoiding the influence of the vibrator on the connection between the connecting plate and the printed part, with a more reasonable structure, and avoiding the powder from adhering to the vibrator.

[0014] The present utility model is further configured such that rotating shafts are fixedly connected to both sides of the cover plate, and two hinge seats corresponding to the rotating shafts one by one are provided outside the box body. The rotating shafts are rotatably connected to the corresponding hinge seats. The cover plate is hinged to the box body through the cooperation of the rotating shafts and the hinge seats, with a simple structure, stable transmission between the hinge seats and the rotating shafts, and facilitating the cover plate to cover the box opening on the box body.

[0015] The present utility model is further configured to further include a motor, the output end of the motor is connected to one of the rotating shafts through a coupling, and the motor is used to drive the cover plate to switch between a first working position and a second working position. By driving the cover plate to switch between the first working position and the second working position through the motor, it is not necessary to manually flip the cover plate manually, reducing the labor intensity of the operator and improving the production efficiency.

[0016] The present utility model is further configured to be provided with a sealing strip corresponding to the box opening on the outer side of the box body. The sealing strip can improve the sealing performance between the cover plate and the box body, preventing powder from leaking outside the box during the working process.

[0017] The present utility model is further configured to further include a moving frame, the box body is fixedly connected to the moving frame, and a support rod is provided on the moving frame. When the cover plate is in the first working position, the side of the cover plate away from the box opening abuts against the support rod. The support rod on the moving frame provides support for the cover plate, which makes it easier to fix the substrate of the 3D printed part to the connecting plate without manually supporting the free end of the cover plate, making it more convenient to use.

[0018] The present utility model is further configured to the side of the box body opposite to the cover plate is made of a transparent material. The side of the box body opposite to the cover plate is made of a transparent material, which enables the operator to observe the powder cleaning situation at any time during the powder cleaning operation.

[0019] The present utility model is further configured to at least one operation hole is opened on the side of the box body made of a transparent material, an operation glove is connected to the operation hole of the box body through a flange, and the connecting plate is rotatably connected to the cover plate. The connecting plate can be rotated through the operation glove, so as to facilitate the operator to observe the powder cleaning situation on the printed part.

[0020] The present utility model is further configured to further include an air gun, and the air gun is located inside the box body. During the powder cleaning process, the 3D printed part can be blown by using the air gun inside the box body for auxiliary powder cleaning, thereby improving the powder cleaning efficiency.

[0021] The present utility model is further configured to the box body is communicated with an air inlet and a powder suction port. Inert gas can be introduced into the box body through the air inlet to reduce the oxygen content in the box body, and an external powder suction device can suck the powder in the box body out through the powder suction port.

[0022] In summary, the powder cleaning device for 3D printed parts provided by the present utility model has at least the following beneficial effects:

[0023] 1. Reduce the difficulty for the operator to fix the 3D printed part to the cleaning device.

[0024] 2. Improve the powder cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention from the front side perspective;

[0027] Figure 2 is the front view of the present invention;

[0028] Figure 3 is the right view of the present invention;

[0029] Figure 4 is a three-dimensional structural schematic diagram of the present invention from the rear side perspective (wherein the front end plate and the right inclined plate are hidden);

[0030] Figure 5 is a three-dimensional structural schematic diagram of the cover plate, vibrator and connecting plate of the present invention;

[0031] Figure 6 is the side view of the cover plate, vibrator and connecting plate of the present invention.

[0032] Reference numerals include: 1, box body; 101, side plate; 102, inclined plate; 103, powder collecting hopper; 104, end plate; 2, cover plate; 3, connecting plate; 4, base plate; 5, vibrator; 6, avoidance hole; 7, rotating shaft; 8, hinge seat; 9, motor; 10, coupling; 11, moving frame; 12, support rod; 13, operation hole; 14, flange; 15, air inlet; 16, powder suction port; 17, air outlet; 18, quick-connect ball valve; 19, cross bearing; 20, operation handle; 21, discharge pipe; 22, universal wheel; 23, placement box; 24, box opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further elaborate on the present invention in conjunction with the attached Figures 1-6 drawings and specific embodiments.

[0034] Please refer to Figures 1-6, a powder cleaning device for a 3D printed part provided in this embodiment includes: a box body 1, a cover plate 2, a connecting plate 3, and a vibrator 5. A box opening 24 is formed on the box body 1, and the box opening 24 is formed on the upper side wall of the box body 1. The cover plate 2 has a first working position and a second working position. The lower end of the cover plate 2 is hinged to the box body 1. The connecting plate 3 is arranged on the side of the cover plate 2 close to the box opening 24, and the connecting plate 3 is used to fix the substrate 4 and / or the printed part. When the cover plate 2 is in the first working position, the printed part is in an upward posture; when the cover plate 2 rotates around the hinge end to the second working position, the cover plate 2 closes the box opening 24 and makes the printed part in an inverted or inclined posture. The vibrator 5 is arranged on the connecting plate 3 and is used to vibrate the connecting plate 3. Among them, the box body 1 includes two left and right side plates 101, and inclined plates 102 are connected to the upper ends of the two left and right side plates 101, and the upper ends of the two inclined plates 102 are connected. In this embodiment, it is preferably that the box opening 24 is formed on the right inclined plate 102, and in this embodiment, it is preferably that the lower end of the cover plate 2 is hinged to the right inclined plate 102. The box body 1 further includes a powder collecting hopper 103 at the bottom and two end plates 104 at the front and rear sides. The upper end of the powder collecting hopper 103 is a rectangular opening, the powder collecting hopper 103 is in an overall conical shape with a larger upper part and a smaller lower part, and a discharge pipe 21 is connected to the lower end of the powder collecting hopper 103, and a quick-connect ball valve 18 is arranged on the discharge pipe 21. The lower ends of the two side plates 101 are respectively connected to the left and right two edges of the upper port part of the powder collecting hopper 103, and the lower ends of the two end plates 104 are respectively connected to the front and rear two edges of the upper port part of the powder collecting hopper 103. The powder collecting hopper 103, the two side plates 101, the two inclined plates 102, and the two end plates 104 jointly enclose to form the box body 1.

[0035] By adopting the above solution, in the initial state, the cover plate 2 is in the first working position, and the cover plate 2 is in a horizontal state. The substrate 4 of the 3D printed part is fixedly connected to the connecting plate 3. Specifically, the substrate 4 of the 3D printed part can be fixed to the connecting plate 3 by bolts. Since the bottom of the 3D printed part is connected to the substrate 4, the posture of the 3D printed part is upward at this time. After the substrate 4 of the 3D printed part and the connecting plate 3 are fixedly connected, the cover plate 2 is adjusted to the second working position. At this time, the 3D printed part is in an inverted or inclined posture. The vibrator 5 vibrates the connecting plate 3, and the connecting plate 3 drives the 3D printed part to vibrate, so as to clean the residual powder on the 3D printed part. Since the cover plate 2 is in a horizontal posture when in the first working position, when installing the printed part on the powder cleaning device, it is not necessary to invert the printed part, which reduces the operation difficulty of the operator. And during the process of cleaning the powder by driving the printed part to vibrate by the vibrator 5, since the printed part is in an inverted or inclined posture, the powder cleaned from the printed part is more likely to separate from the printed part and fall into the box body 1, improving the powder cleaning efficiency. In addition, since the cover plate 2 closes the box opening 24 of the box body 1, during the powder cleaning work, the powder is located in the internal space of the box body 1, thus avoiding harm to the human body caused by the powder. A collection bucket can be placed below the powder collection hopper 103, and the ball valve is opened, so that the powder collected in the powder collection hopper 103 enters the collection bucket through the discharge pipe 21.

[0036] In some embodiments, an avoidance hole 6 is formed in the cover plate 2. The avoidance hole 6 is specifically located in the middle of the cover plate 2. The vibrator 5 is arranged on the side of the connecting plate 3 away from the box opening 24, and the vibrator 5 is located in the avoidance hole 6. The vibrator 5 can specifically adopt a turbine pneumatic hammer in the prior art, which is used to provide power for continuously vibrating the connecting plate 3.

[0037] Both the front and rear sides of the cover plate 2 are fixedly connected with rotating shafts 7. There are two hinge seats 8 corresponding to the rotating shafts 7 on the outside of the box body 1. The hinge seats 8 are specifically fixedly connected to the inclined plate 102 on the right side, and the rotating shafts 7 are rotatably connected to the corresponding hinge seats 8.

[0038] In order to facilitate the rotation of the cover plate 2, further, a motor 9 is further included. The output end of the motor 9 is connected to one of the rotating shafts 7 through a coupling 10. The motor 9 is used to drive the cover plate 2 to switch between the first working position and the second working position. In this embodiment, preferably, the output end of the motor 9 is connected to the rotating shaft 7 on the front side of the cover plate 2 through a coupling 10. The motor 9 can specifically adopt a stepping motor 9 in the prior art.

[0039] In order to enhance the sealing performance between the cover plate 2 and the box opening 24 of the box body 1, further, a sealing strip corresponding to the box opening 24 is provided on the outer side of the box body 1. When the cover plate 2 is in the second working position, the cover plate 2 covers the inclined plate 102 on the right side, and the cover plate 2 presses the sealing strip against the corresponding inclined plate 102, thereby improving the sealing performance between the cover plate 2 and the box body 1 and preventing the powder inside the box body 1 from leaking outwards.

[0040] In order to facilitate the fixing of the box body 1 and the support of the cover plate 2, further, a moving frame 11 is further included. The box body 1 is fixedly connected to the moving frame 11. A support rod 12 is provided on the moving frame 11. When the cover plate 2 is in the first working position, the side of the cover plate 2 away from the box opening 24 abuts against the support rod 12. In order to facilitate the movement of the moving frame 11, four universal wheels 22 can be provided at the bottom of the moving frame 11.

[0041] In order to facilitate the operator to observe the cleaning condition of the residual powder on the printed part, the side of the box body 1 opposite to the cover plate 2 is made of a transparent material. Specifically, the inclined plate 102 on the left side is opposite to the cover plate 2, and the inclined plate 102 on the left side is made of a transparent material. The transparent inclined plate 102 can specifically adopt a transparent acrylic plate in the prior art. At least one operation hole 13 is opened on the side of the box body 1 made of a transparent material. In this embodiment, it is preferably set with two operation holes 13 to facilitate the operator to operate with both hands. An operation glove is connected to the operation hole 13 of the box body 1 through a flange 14, and the connecting plate 3 is rotatably connected to the cover plate 2. Specifically, the connecting plate 3 and the cover plate 2 can be rotatably connected through a cross bearing 19. In order to facilitate the operator to rotate the connecting plate 3, four operation handles 20 are provided on the connecting plate 3, and the operation handles 20 are evenly distributed along the circumferential direction of the connecting plate 3. When the operator is working, put the hand into the glove, grasp the operation handle 20 on the connecting plate 3 inside the box body 1, and drive the 3D printed part to rotate, so as to facilitate observing whether the printed part is cleaned and ensure the sealing performance of the box body 1, so that the powder inside the box body 1 will not leak outwards from the operation hole 13.

[0042] In order to improve the powder cleaning effect, further, an air gun is further included. The air gun is located inside the box body 1. The powder on the 3D printed part is assisted to be blown by the air gun, further improving the powder cleaning efficiency. In order to facilitate the placement of the air gun, a placement box 23 is fixedly connected to the inner wall of the end plate 104 at the rear side, and the placement box 23 is used for storing the air gun.

[0043] The box body 1 is communicated with an air inlet 15 and a powder suction port 16. In this embodiment, the air inlet 15 and the powder suction port 16 are preferably arranged on the front end plate 104. Inert gas can be introduced into the box body 1 through the air inlet 15 to reduce the oxygen content in the box body 1. The external powder suction device can suck out the powder in the box body 1 through the powder suction port 16. An air outlet 17 is also arranged on the front end plate 104 to output the excess gas in the box body 1 and prevent excessive pressure.

[0044] It should be noted that the words indicating directions in this article, such as up and down, etc., are all set in the Figure 1 direction for the convenience of description and have no other specific meanings.

[0045] It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the article or device including the above elements.

[0046] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A powder cleaning device for 3D printed parts, characterized in that: include: A box body (1), wherein the box body (1) is provided with a box opening (24); A cover plate (2), one end of the cover plate (2) is hinged on the box body (1), and the cover plate (2) has a first working position and a second working position; A connecting plate (3), the connecting plate (3) being arranged on the inner side of the cover plate (2), the connecting plate (3) being used to fix the base plate (4) and / or the printed part, when the cover plate (2) is located at a first working position, the printed part is in an upward posture, when the cover plate (2) is rotated around the hinge end to a second working position, the cover plate (2) closes the box opening (24), and the printed part is in an inverted or inclined posture; A vibrator (5), wherein the vibrator (5) is arranged on the connecting plate (3).

2. A powder cleaning device for 3D printed parts as claimed in claim 1, characterized in that: The cover plate (2) is provided with an avoidance hole (6), the vibrator (5) is arranged on a side of the connecting plate (3) away from the box opening (24), and the vibrator (5) is located in the avoidance hole (6).

3. A powder cleaning device for 3D printed parts as claimed in claim 1 or 2, characterized in that: The cover plate (2) is fixedly connected to a rotating shaft (7) on both sides, and the outer side of the box body (1) is provided with two hinge seats (8) corresponding to the rotating shaft (7) one by one, and the rotating shaft (7) is rotatably connected to the corresponding hinge seats (8).

4. A powder cleaning device for 3D printed parts as claimed in claim 3, characterized in that: It also comprises a motor (9), the output end of the motor (9) being connected to one of the rotating shafts (7) via a coupling (10), and the motor (9) being used to drive the cover plate (2) to switch between the first working position and the second working position.

5. A powder cleaning device for 3D printed parts as claimed in claim 4, characterized in that: The outer side of the box body (1) is provided with a circle of sealing strips corresponding to the box opening (24).

6. A powder cleaning device for 3D printed parts as claimed in claim 1, characterized in that: It also comprises a movable frame (11), the box body (1) is fixedly connected to the movable frame (11), a support rod (12) is provided on the movable frame (11), and when the cover plate (2) is located at the first working position, the side of the cover plate (2) away from the box opening (24) abuts against the support rod (12).

7. A powder cleaning device for 3D printed parts as claimed in claim 6, characterized in that: The side of the box body (1) opposite to the cover plate (2) is made of transparent material.

8. A powder cleaning device for 3D printed parts as claimed in claim 7, characterized in that: At least one operating hole (13) is provided on one side of the box body (1) which is made of a transparent material. An operating glove is connected to the operating hole (13) of the box body (1) via a flange (14). The connecting plate (3) is rotatably connected to the cover plate (2).

9. A powder cleaning device for 3D printed parts as claimed in claim 7 or 8, characterized in that: It also comprises an air gun, which is located inside the box (1).

10. A powder cleaning device for 3D printed parts as claimed in claim 1, characterized in that: The box body (1) is connected with an air inlet (15) and a powder suction port (16).

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