Three-dimensional printing post-processing system

Abstract

The three-dimensional printing post-processing system comprises a post-processing work station and a printing trolley, the post-processing work station comprises a work station body and a powder suction pipe, the powder suction pipe is provided with a handle, and the handle comprises a lifting control unit; the printing trolley comprises a lifting mechanism used for driving the construction platform to ascend and descend in the construction groove. When the printing trolley is attached to the work station body, the lifting mechanism is electrically connected with the lifting control unit so that the lifting control unit can control the lifting mechanism to drive the construction platform to ascend and descend. By adopting the technical scheme, an operator can extract all three-dimensional printed pieces without bending down.

Description

Technical Field

[0001] The present application relates to the field of three-dimensional printing, and in particular to a three-dimensional printing post-processing system. Background Art

[0002] In the prior art, the three-dimensional printing method includes a process method of laying powder as a printing material layer by layer on a building platform where a printing trolley gradually descends, and performing selective sintering. After the printing is completed by the above method, a three-dimensional printing intermediate is formed in the printing trolley, and the three-dimensional printing intermediate includes a three-dimensional printed part and powder wrapped outside the three-dimensional printed part. The printing trolley includes a trolley body, a building platform and a lifting mechanism. The trolley body is provided with a building slot, and the lifting mechanism is used to drive the building platform to rise and fall in the building slot. The three-dimensional printing intermediate is formed in a building space enclosed by the building platform and the building slot. After the three-dimensional printing intermediate is cooled in the printing trolley, the three-dimensional printed part in the printing trolley needs to be extracted by a post-processing workstation. The post-processing workstation generally includes a workstation body, a powder suction pump and a powder suction pipe. The workstation body is provided with a channel, and the printing trolley is suitable for inserting the channel along a first direction and attaching to the workstation body. The powder suction pump is placed in the workstation body. One end of the powder suction pipe is connected to the powder suction pump, and the other end extends out of the workstation body and is provided with a handle. A through hole is formed on the handle. When extracting a 3D printed part, the operator holds the handle, turns on the powder suction pump, and moves the handle close to the 3D printed intermediate to gradually suck the powder into the storage space through the powder suction tube. As the thickness of the 3D printed intermediate gradually decreases, the operator needs to bend over to put the handle into the build tank to suck the powder from the lower layer. Therefore, the operator's labor intensity is very high. Summary of the invention

[0003] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology and to provide a three-dimensional printing post-processing system, which, compared with the prior art, allows operators to extract all three-dimensional printed parts without bending over.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The first technical solution relates to a three-dimensional printing post-processing system, which includes: a post-processing workstation, which includes a workstation body, a powder suction pump and a powder suction tube; the powder suction pump is installed in the workstation body, one end of the powder suction tube is connected to the powder suction pump, and the other end extends out of the workstation body and is provided with a handle, the handle includes a handle body and a lifting control unit; and a printing carriage, the printing carriage includes a carriage body, a building platform and a lifting mechanism; the carriage body is provided with a building slot, and the lifting mechanism is used to drive the building platform to rise and fall in the building slot; the printing carriage is suitable for being attached to the workstation body, and when the printing carriage is attached to the workstation body, the lifting mechanism is electrically connected to the lifting control unit, so that the lifting control unit can control the lifting mechanism to drive the building platform to rise and fall.

[0006] The second technical solution is based on the first technical solution, wherein the workstation body is provided with a channel, and the printing carriage is suitable for being inserted into the channel along a first direction to be attached to the workstation body; the workstation body is provided with a first electrical connection part extending into the channel, and the first electrical connection part is electrically connected to the lifting control unit; the carriage body is provided with a second electrical connection part, and the second electrical connection part is electrically connected to the lifting mechanism, and the second electrical connection part is electrically connected to the first electrical connection part when the printing carriage is attached to the workstation body.

[0007] The third technical solution is based on the second technical solution, wherein the powder suction pipe is provided with a powder suction channel and a wire passage; the powder suction chamber is connected to the powder suction pump and the end of the handle, the wire passage is used to accommodate an electrical connection wire, and the electrical connection wire is used to electrically connect the lifting control unit and the first electrical connection part.

[0008] The fourth technical solution is based on the second technical solution, wherein one of the first electrical connection part and the second electrical connection part is provided with a first terminal extending along the first direction, and the other is provided with a second terminal suitable for the first terminal to be inserted along the first direction; when the printing carriage is inserted into the channel along the first direction, the first terminal is inserted into the second terminal.

[0009] The fifth technical solution is based on the fourth technical solution, wherein one of the first electrical connection part and the second electrical connection part is provided with a first guide part extending along the first direction, and the other of the two is provided with a second guide part suitable for inserting the first guide part along the first direction; when the printing carriage is inserted into the channel along the first direction, the first guide part is first inserted into the second guide part, and the first terminal is then inserted into the second terminal.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the first guide portion includes at least two guide posts; and the second guide portion corresponds to a guide hole of each guide post.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the number of the guide pillars is four, and the four guide pillars are arranged around the first terminal or the second terminal.

[0012] The eighth technical solution is based on the sixth technical solution, wherein at least one of the guide columns is provided with a guide slope and / or at least one of the guide holes is provided with a guide cone.

[0013] The ninth technical solution is based on the first technical solution, wherein the lifting control unit includes a lifting direction control component and a lifting action trigger component; the lifting direction control component is used to control the lifting mechanism to drive the lifting direction of the building platform; the lifting action trigger component is used to trigger the lifting mechanism to drive the building platform to rise or fall.

[0014] The tenth technical solution is based on the ninth technical solution, wherein the lifting direction control component and the lifting action trigger component are arranged along the extension direction of the handle.

[0015] The eleventh technical solution is based on the ninth technical solution, wherein the lifting action trigger component includes a rotating action and an elastic member, the rotating action is rotatably connected to the handle body and is provided with a control part, and the elastic member is placed between the rotating action and the handle body; pressing the control part triggers the lifting mechanism to drive the building platform to rise or fall, and the elastic member deforms to store energy; releasing the control part, the elastic member releases energy and restores deformation, and the lifting mechanism stops driving the building platform to rise or fall.

[0016] The twelfth technical solution is based on the first technical solution, wherein a powder feeding portion is provided at the end of the handle, and the end wall and the side wall of the powder feeding portion are both provided with through holes.

[0017] The thirteenth technical solution is based on the first technical solution, wherein the handle also includes an in-place sensor and a controller, and the controller is electrically connected to the in-place sensor and the powder suction pump; when the handle is received by the workstation body, the in-place sensor sends a first signal to the controller, and the controller controls the powder suction pump to start; when the handle is away from the workstation body, the in-place sensor sends a second signal to the controller, and the powder suction pump is controlled to shut down by the controller.

[0018] The fourteenth technical solution is based on the thirteenth technical solution, wherein the in-position sensor is a magnetic sensor or a micro switch.

[0019] Compared with the prior art, the above solution has the following beneficial effects:

[0020] In the first technical solution, the handle includes a lifting control unit. When the printing carriage is attached to the workstation body, the lifting mechanism is electrically connected to the lifting control unit so that the lifting control unit can control the lifting mechanism to drive the building platform to rise and fall. Therefore, when it is necessary to absorb the powder in the lower layer of the building tank, the operator can easily control the building platform to rise by the handle without bending over. The operator can control the lifting mechanism to drive the building platform to rise continuously by the lifting control unit on the handle until all the three-dimensional printed parts are extracted.

[0021] In the second technical solution, the lifting control unit and the lifting mechanism are electrically connected through a first electrical connection part provided on the workstation body and extending into the channel and a second electrical connection part provided on the trolley body. Therefore, when the printing trolley is inserted into the channel, electrical connection can be automatically achieved without having to achieve electrical connection through other means after the printing trolley is attached to the workstation body. Therefore, the electrical connection is more convenient.

[0022] In the third technical solution, the powder suction tube is provided with a wire passage for accommodating the electrical connection wire, and the lifting control unit and the first electrical connection part are electrically connected through the electrical connection wire, which is a preferred implementation of the second technical solution.

[0023] In the fourth technical solution, the first terminal and the second terminal are plugged together along the first direction, and the electrical connection is more reliable compared to other methods of achieving electrical connection between the two.

[0024] In the fifth technical solution, the first guide portion is first inserted into the second guide portion, and the first terminal is then inserted into the second terminal, thereby preventing the first terminal and the second terminal from butting against each other due to inaccurate positioning.

[0025] In the sixth technical solution, the number of guide posts in the first guide portion is at least two, which is more conducive to accurately positioning the first terminal and the second terminal.

[0026] In the seventh technical solution, four guide posts are arranged around the first terminal or the second terminal, so that the first terminal and the second terminal can be accurately positioned in both the up-down direction and the left-right direction.

[0027] In the eighth technical solution, at least one guide column and / or at least one guide hole is provided with a guide slope and / or a guide cone, and the first guide part and the second guide part are guided by the guide slope and the guide cone. By gradually correcting the positioning deviation, the printing carriage adjusts its posture to achieve correct electrical connection between the first terminal and the second terminal.

[0028] In the ninth technical solution, the lifting direction control component and the lifting action trigger component are separated to avoid lifting direction errors.

[0029] In the tenth technical solution, the lifting direction control component and the lifting action trigger component are arranged along the extension direction of the handle, which is convenient for the operator to operate by hand and avoid accidental touch and miscontrol.

[0030] In the eleventh technical solution, an elastic member is provided so that when the control part is released, the lifting mechanism is controlled to stop by releasing energy through the elastic member, which enables the operator to more easily and accurately control the stop time when operating the lifting mechanism.

[0031] In the twelfth technical solution, both the end wall and the side wall of the powder inlet are provided with through holes. The through holes of the end wall are conducive to absorbing the powder facing the end of the handle, and the through holes of the side wall are conducive to air intake through the through holes of the side wall when the end wall is close to the surface of the three-dimensional printing intermediate, driving the through holes of the end wall to absorb the powder. Of course, the through holes of the side wall are also conducive to absorbing flying powder, further improving the working environment of the operator.

[0032] In the thirteenth and fourteenth technical solutions, the powder suction pump is automatically controlled by the in-place sensor and the controller, which reduces the operating steps and is more convenient to operate compared to separately controlling the start or stop of the powder suction pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0034] Figure 1 This is a schematic diagram of the state of the printing vehicle after completing printing in the embodiment;

[0035] Figure 2 This is a schematic diagram of the state when the printing carriage is attached to the post-processing workstation in the embodiment;

[0036] Figure 3 is a three-dimensional diagram of the first electrical connection portion and the second electrical connection portion in the embodiment;

[0037] Figure 4 is a three-dimensional diagram of the second electrical connection portion in the embodiment;

[0038] Figure 5 is a front view of a handle in an embodiment;

[0039] Figure 6 for Figure 5 AA section view.

[0040] Description of main reference numerals:

[0041] 1. Printing carriage; 2. Carriage body; 3. Build platform; 4. Lifting mechanism; 5. Build slot; 6. Second electrical connection part; 7. 3D printing intermediate; 8. 3D printing post-processing system; 9. Post-processing workstation; 10. Workstation body; 11. Powder suction tube; 12. Workbench; 13. Operation space; 14. Passage; 15. Door; 16. Operation window; 17. Operation hole; 18. Handle; 19. First electrical connection part; 20. Second terminal; 21. First guide part; 22. Guide column; 23 , first guide column; 24, second guide column; 25, guide slope; 26, guide cone; 27, first terminal; 28, second guide part; 29, guide hole; 30, first guide hole; 31, second guide hole; 32, handle body; 33, lifting control unit; 34, in-position sensor; 35, powder suction channel; 36, wire channel; 37, powder feeding part; 38, through hole; 39, lifting direction control part; 40, lifting action trigger component; 41, rotation action; 42, elastic part; X, first direction. DETAILED DESCRIPTION

[0042] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0043] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0044] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0045] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0046] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0047] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0048] See also Figure 1 , Figure 1 FIG. 2 shows the state of the printing carriage 1 after the printing is completed in this embodiment. Figure 1 As shown, the printing carriage 1 includes a carriage body 2, a building platform 3 and a lifting mechanism 4. The carriage body 2 is provided with a building slot 5 and a second electrical connection portion 6. The building slot 5 extends in the up-down direction and has an upward opening. The second electrical connection portion 6 is located on the rear wall of the carriage body 2 along the first direction X, and its specific structure is described in detail later. The building platform 3 is located in the building slot 5. The lifting mechanism 4 is used to drive the building platform 3 to rise and fall relative to the carriage body 2. The upper surface of the building platform 3 and the inner wall of the building slot 5 enclose a building space. After printing is completed, a three-dimensional printed intermediate 7 is formed in the building space, and the three-dimensional printed intermediate 7 includes a three-dimensional printed part and powder as a printing material wrapped outside the three-dimensional printed part. In this example, the carriage body 2 has wheels to make the printing carriage 1 movable.

[0049] See also Figure 2 , Figure 2 FIG. 8 shows a three-dimensional printing post-processing system 8 in this embodiment. Figure 2 As shown, the three-dimensional printing post-processing system includes a post-processing workstation 9 and a printing carriage 1.

[0050] like Figure 2 As shown, the post-processing workstation 9 includes a workstation body 10, a powder suction pump (not shown in the figure), a controller (not shown in the figure) and a powder suction pipe 11. The lower part of the workstation body 10 is a workbench 12, and the workbench 12 has an upward surface. An operating space 13 is formed above the workbench 12. The workbench 12 is provided with a channel 14, which extends along the first direction X, and a door 15 is arranged at its opening. An openable and closable operating window 16 is provided above the door 15, and two operating holes 17 are provided on the operating window 16. The operator can extend his arm into the operating hole 17 and enter the operating space to post-process the three-dimensional printing intermediate 7. The powder suction pump is used to form a negative pressure to suck the powder in the three-dimensional printing intermediate 7 into the storage space of the workstation body 10. The controller is electrically connected to the powder suction pump and is used to control the powder suction pump to start or shut down. One end of the powder suction pipe 11 is connected to the powder suction pump, and the other end extends out of the upper surface of the workbench 12, and a handle 18 is formed at its end. A first electrical connection portion 19 extending into the passage 14 is provided on a rear wall of the workbench 12 along the first direction X, and the first electrical connection portion 19 faces the door 15 .

[0051] See also Figure 3 and Figure 4 , Figure 3 and Figure 4 A first electrical connection 19 on the workbench 12 and a second electrical connection 6 on the trolley body 2 are shown.

[0052] like Figure 3As shown, the first electrical connection portion 19 is provided with a second terminal 20. The second terminal 20 has a terminal hole extending along the first direction X. The first electrical connection portion 19 is also provided with a first guide portion 21, and the first guide portion 21 includes at least two guide posts 22 extending along the first direction X. In this embodiment, the first guide portion 21 includes four guide posts 22 arranged around the second terminal 20. Among the four guide posts 22, the two guide posts 22 arranged along the up and down directions are the first guide posts 23, and the two guide posts 22 arranged along the left and right directions are the second guide posts 24. The up and down and the left and right here are both relative to the first direction as the front and back directions. Among them, the first guide post 23 has a rectangular cross-section, and a guide inclined surface 25 is provided at its front end along the first direction X. The second guide post 24 has a circular cross-section, and a guide conical surface 26 is provided at its front end along the first direction X.

[0053] like Figure 3 and Figure 4 As shown, the second electrical connection part 6 is provided with a first terminal 27. The first terminal 27 is electrically connected to the lifting mechanism 4. The first terminal 27 extends backward along the first direction X, and is suitable for inserting the terminal hole of the second terminal 20 when the printing carriage 1 is inserted into the channel from front to back along the first direction X. The second electrical connection part 6 is also provided with a second guide part 28 suitable for plugging and matching with the first guide part 21. The second guide part 28 includes at least two guide holes 29 extending along the first direction X, and the guide holes 29 are arranged corresponding to the guide column 22. In this embodiment, the second guide part 28 includes four guide holes 29 arranged around the first terminal 27. Among the four guide holes 29, the two guide holes 29 arranged in the up-down direction are the first guide holes 30, and the first guide holes 30 are suitable for the corresponding first guide column 23 to be inserted along the first direction X. The two guide holes 29 arranged in the left-right direction are the second guide holes 31, and the second guide holes 31 are suitable for the corresponding second guide column 24 to be inserted along the first direction X. The second guide hole 31 has a backward guide cone 26. In this embodiment, during the process of inserting the printing carriage 6 into the channel 14 along the first direction, each guide post 22 is first inserted into the corresponding guide hole 29 along the first direction X, that is, the first guide portion 21 is first inserted into the second guide portion 28. Due to the guiding effect of the guide slope 25 and the guide cone 26, during the process of inserting each guide post 22 into the corresponding guide hole 29, the printing carriage 1 is forced to fine-tune the posture and angle so that the first terminal 27 is correctly inserted into the terminal hole of the second terminal 20 thereafter. After the guide post 22 and the guide hole 29 and the first terminal 27 and the second terminal 20 are plugged in, the printing carriage 1 is accurately positioned in the up-down direction and the left-right direction, and the first terminal 27 and the second terminal 20 establish a firm electrical connection. In other embodiments, the first terminal 27 may also be a part of the first electrical connection portion 19, and the second terminal 20 may also be a part of the second electrical connection portion 6. The first guide portion 21 may be located at the second electrical connection portion 6, and the second guide portion 28 may also be located at the first electrical connection portion 19.

[0054] See also Figure 5 and Figure 6 , Figure 5 and Figure 6 The handle 18 of the powder suction tube 11 is shown. Figure 5 and Figure 6As shown, the handle 18 includes a handle body 32, a lifting control unit 33 and an in-position sensor 34. The handle body 32 is provided with a powder suction channel 35, a wire passage 36 and a powder inlet 37. The powder suction channel 35 is not only located in the handle 18, but also runs through the entire powder suction tube 11, and is used to suck the powder from the powder inlet 37 through the entire powder suction tube 11 to the storage space. The wire passage 36 starts from the handle 18 and enters the workstation body 10 through the main body of the powder suction tube 11. The wire passage 36 is used to accommodate an electrical connection line, one end of the electrical connection line is connected to the lifting control unit 33, and the other end is connected to the second terminal 20, so that when the printing carriage 1 is attached to the workstation body 10, the lifting control unit 33 can be electrically connected to the lifting mechanism 4 through the electrical connection line, the second terminal 20 and the first terminal 27. The electrical connection line is also connected to the in-position sensor 34 at one end, and the other end is connected to the controller, so that the in-position sensor 34 is electrically connected to the controller. The powder inlet 37 is used to introduce powder into the powder suction tube 11. In this embodiment, the end wall and the side wall of the powder feeding part 37 are both provided with through holes 38. The lifting control unit 33 includes a lifting direction control member 39 and a lifting action trigger assembly 40. The lifting direction control member 39 is used to control the lifting direction of the building platform 3 driven by the lifting mechanism 4. The lifting action trigger assembly 40 is used to trigger the lifting mechanism 4 to drive the building platform 3 to rise or fall. In this embodiment, the lifting direction control member 39 and the lifting action trigger assembly 40 are arranged along the extension direction of the handle 18. Specifically, the lifting action trigger assembly 40 is closer to the powder feeding part 37 than the lifting direction control member 39. In this embodiment, the lifting action trigger assembly 40 includes a rotating action 41 and an elastic member 42. The rotating action 41 is rotatably connected to the handle body 32 and is provided with a control unit. The elastic member 42 is placed between the rotating action 41 and the handle body 32. Specifically, in this embodiment, the elastic member 42 is placed between the control unit and the handle body 32; pressing the control unit triggers the lifting mechanism 4 to drive the building platform 3 to rise or fall, and causes the elastic member 42 to deform and store energy; releasing the control unit, the elastic member 42 releases energy and restores deformation, and the lifting mechanism 4 stops driving the building platform 3 to rise or fall. In this embodiment, the control unit is closer to the lifting direction control member 39 than the rotation axis of the rotating member 41 along the extension direction of the handle 18. The in-place sensor 34 is fixed to the handle body 32 and is close to the powder feeder 37 along the extension direction of the handle 18. The in-place sensor 34 is used to send a first signal to the controller when the handle 18 is received by the workstation body 10, so that the controller controls the powder suction pump to start; the in-place sensor 34 is also used to send a second signal to the controller when the handle 18 is away from the workstation body 10, so that the controller controls the powder suction pump to close. In this embodiment, the handle 18 is suitable for being received on the upper surface of the workbench 12. The in-place sensor 34 is a magnetic sensor. In other embodiments, the handle 18 can also be received in other parts of the workstation body 10, and the in-place sensor 34 can also be a micro switch or any other sensor device well known to those skilled in the art.

[0055] With the three-dimensional printing post-processing system 8 in this embodiment, since the handle 18 includes a lifting control unit 33, when the printing carriage 1 is attached to the workstation body 10, the lifting mechanism 4 is electrically connected to the lifting control unit 33, so that the lifting control unit 33 can control the lifting mechanism 4 to drive the building platform 3 to rise and fall. Therefore, when it is necessary to absorb the powder in the lower layer of the building tank 5, the operator can easily control the lifting of the building platform 3 through the handle 18 without bending over. The operator can control the lifting mechanism 4 to drive the building platform 3 to rise continuously through the lifting control unit 33 on the handle 18 until all the three-dimensional printed parts are extracted.

[0056] In this embodiment, the lifting control unit 33 and the lifting mechanism 4 are electrically connected through a first electrical connection part 19 provided on the workstation body 10 and extending into the channel 14 and a second electrical connection part 6 provided on the trolley body 2. Therefore, when the printing trolley 1 is inserted into the channel 14, electrical connection can be automatically achieved without having to achieve electrical connection through other means after the printing trolley 1 is attached to the workstation body 10. Therefore, the electrical connection is more convenient.

[0057] In this embodiment, the powder suction tube 11 is provided with a wire passage 36 for accommodating electrical connection wires, and the lifting control unit 33 and the first electrical connection part 19 are electrically connected through the electrical connection wires. Then, through the electrical connection between the first electrical connection part 19 and the second electrical connection part 6 and the electrical connection between the second electrical connection part 6 and the lifting mechanism 4, the electrical connection between the lifting control unit 33 and the lifting mechanism 4 can be achieved.

[0058] In this embodiment, the first terminal 27 and the second terminal 20 are plugged together along the first direction X, and the electrical connection is more reliable compared to other methods of electrical connection between the two.

[0059] In this embodiment, the first guide portion 21 is first inserted into the second guide portion 28 , and then the first terminal 27 is inserted into the second terminal 20 , thereby preventing the first terminal 27 and the second terminal 20 from butting against each other due to inaccurate positioning.

[0060] In this embodiment, the number of the guide posts 22 in the first guide portion 21 is at least two, which is more conducive to accurately positioning the first terminal 27 and the second terminal 20 .

[0061] In this embodiment, four guide posts 22 are disposed around the second terminal 20 , so that the first terminal 27 and the second terminal 20 can be accurately positioned in both the up-down direction and the left-right direction.

[0062] In this embodiment, at least one guide column 22 and / or at least one guide hole 29 is provided with a guide slope 25 and / or a guide cone 26, and the first guide part 21 and the second guide part 28 are guided by the guide slope 25 and the guide cone 26. By gradually correcting the positioning deviation, the printing carriage 1 adjusts its posture to achieve correct electrical connection between the first terminal 27 and the second terminal 20.

[0063] In this embodiment, the lifting direction control member 39 and the lifting action triggering component 40 are separated to avoid the lifting direction error.

[0064] In this embodiment, the lifting direction control member 39 and the lifting action trigger assembly 40 are arranged along the extension direction of the handle 18, which is convenient for the operator to operate by hand and avoid accidental touch and miscontrol.

[0065] In this embodiment, by providing the elastic member 42, when the control unit is released, the elastic member 42 releases energy to control the lifting mechanism 4 to stop, which makes it easier for the operator to accurately control the stop time when operating the lifting mechanism.

[0066] In this embodiment, the end wall and the side wall of the powder inlet 37 are both provided with through holes 38. The through holes 38 of the end wall are conducive to absorbing the powder facing the end of the handle, and the through holes 38 of the side wall are conducive to air intake through the through holes 38 of the side wall when the end wall is close to the surface of the three-dimensional printing intermediate 7, driving the through holes 38 of the end wall to absorb powder. Of course, the through holes 38 of the side wall are also conducive to absorbing flying powder, further improving the working environment of the operator.

[0067] In this embodiment, the powder suction pump is automatically controlled by the in-position sensor 34 and the controller, which reduces the number of operation steps and is more convenient to operate compared to separately controlling the start or stop of the powder suction pump.

[0068] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. A three-dimensional printing post-processing system, characterized in that: include: A post-processing workstation, comprising a workstation body, a powder suction pump and a powder suction pipe; the powder suction pump is installed in the workstation body, one end of the powder suction pipe is connected to the powder suction pump, and the other end extends out of the workstation body and is provided with a handle, the handle comprising a handle body and a lifting control unit; and A printing carriage, the printing carriage comprising a carriage body, a building platform and a lifting mechanism; the carriage body is provided with a building slot, the lifting mechanism is used to drive the building platform to rise and fall in the building slot; the printing carriage is suitable for being attached to the workstation body, and when the printing carriage is attached to the workstation body, the lifting mechanism is electrically connected to the lifting control unit, so that the lifting control unit can control the lifting mechanism to drive the building platform to rise and fall.

2. A three-dimensional printing post-processing system as claimed in claim 1, characterized in that: The workstation body is provided with a channel, and the printing carriage is suitable for being inserted into the channel along a first direction to be attached to the workstation body; the workstation body is provided with a first electrical connection part extending into the channel, and the first electrical connection part is electrically connected to the lifting control unit; the carriage body is provided with a second electrical connection part, and the second electrical connection part is electrically connected to the lifting mechanism, and the second electrical connection part is electrically connected to the first electrical connection part when the printing carriage is attached to the workstation body.

3. A three-dimensional printing post-processing system as claimed in claim 2, characterized in that: The powder suction pipe is provided with a powder suction channel and a wire passage; the powder suction channel is connected to the powder suction pump and the end of the handle, and the wire passage is used to accommodate an electrical connection line, and the electrical connection line is used to electrically connect the lifting control unit and the first electrical connection part.

4. A three-dimensional printing post-processing system as claimed in claim 2, characterized in that: One of the first electrical connection part and the second electrical connection part is provided with a first terminal extending along a first direction, and the other is provided with a second terminal suitable for plugging and matching with the first terminal along the first direction; when the printing carriage is inserted into the channel along the first direction, the first terminal is inserted into the second terminal.

5. A three-dimensional printing post-processing system as claimed in claim 4, characterized in that: One of the first electrical connection part and the second electrical connection part is provided with a first guide part extending along the first direction, and the other of the two is provided with a second guide part suitable for inserting the first guide part along the first direction; when the printing carriage is inserted into the channel along the first direction, the first guide part is first inserted into the second guide part, and the first terminal is then inserted into the second terminal.

6. A three-dimensional printing post-processing system as claimed in claim 5, characterized in that: The first guide portion includes at least two guide posts; the second guide portion corresponds to the guide holes of each guide post.

7. A three-dimensional printing post-processing system as claimed in claim 6, characterized in that: The number of the guide posts is four, and the four guide posts are arranged around the first terminal or the second terminal.

8. A three-dimensional printing post-processing system as claimed in claim 6, characterized in that: At least one of the guide posts and / or at least one of the guide holes is provided with a guide slope and / or a guide cone.

9. A three-dimensional printing post-processing system as claimed in claim 1, characterized in that: The lifting control unit includes a lifting direction control component and a lifting action trigger component; the lifting direction control component is used to control the lifting mechanism to drive the building platform to lift the direction; the lifting action trigger component is used to trigger the lifting mechanism to drive the building platform to rise or fall.

10. A three-dimensional printing post-processing system as claimed in claim 9, characterized in that: The lifting direction control member and the lifting action triggering assembly are arranged along the extending direction of the handle.

11. A three-dimensional printing post-processing system as claimed in claim 9, characterized in that: The lifting action trigger component includes a rotating action and an elastic member, the rotating action is rotatably connected to the handle body and is provided with a control part, and the elastic member is placed between the rotating action and the handle body; pressing the control part triggers the lifting mechanism to drive the building platform to rise or fall, and the elastic member deforms to store energy; releasing the control part, the elastic member releases energy and restores deformation, and the lifting mechanism stops driving the building platform to rise or fall.

12. A three-dimensional printing post-processing system as claimed in claim 1, characterized in that: A powder feeding portion is provided at the end of the handle, and the end wall and the side wall of the powder feeding portion are both provided with through holes.

13. A three-dimensional printing post-processing system as claimed in claim 1, characterized in that: The handle also includes an in-place sensor and a controller, and the controller is electrically connected to the in-place sensor and the powder suction pump; when the handle is received by the workstation body, the in-place sensor sends a first signal to the controller, and the controller controls the powder suction pump to start; when the handle is away from the workstation body, the in-place sensor sends a second signal to the controller, and the powder suction pump is controlled to shut down by the controller.

14. A three-dimensional printing post-processing system as claimed in claim 13, characterized in that: The in-position sensor is a magnetic sensor or a micro switch.

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