Powder collecting device for additive manufacturing

Abstract

The utility model relates to the technical field of additive manufacturing, and provides a powder collecting device for additive manufacturing. A support bar; the connecting pipe is arranged on the supporting rod, the supporting rod is provided with an adjusting part and a locking part, and the adjusting part and the locking part are located on the two sides of the supporting rod respectively; the adjusting rod is slidably arranged on the adjusting part in the axis direction of the supporting rod; the first rubber mat is arranged at one end of the adjusting rod, and the first rubber mat is used for abutting against the inner wall of one side of the equipment case; the locking pipe and the supporting rod are coaxially arranged, and the locking pipe is in threaded connection with the locking part; and the second rubber mat is arranged at one end of the locking pipe, and the second rubber mat is used for abutting against the inner wall of the other side of the equipment case. According to the technical scheme, the powder suction pipe is fixedly arranged in the printing equipment case through the supporting rod, the burden of manual force exerting is relieved, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, in particular to a powder collecting device for additive manufacturing. Background Art

[0002] Additive manufacturing, also known as 3D printing, is a computer-aided process that uses technologies such as layer-by-layer slicing and stacking to perform physical manufacturing. It plays a vital role in model production during the production and research and development of complex structural parts, greatly reducing research and development costs and improving the production efficiency and quality of complex structural parts.

[0003] In the process of additive manufacturing using powder, powder is stacked layer by layer in the chassis of the printing equipment, and the powder in the non-solid structure gradually increases. After the parts processing is completed, the excess powder can be recycled and can be used alone or mixed with new materials in a certain ratio to reduce waste. The existing powder collecting device generally uses a negative pressure device to collect the excess powder in the equipment chassis through a powder suction tube. At first, there is a lot of excess powder in the printing equipment chassis. The suction nozzle of the handheld powder suction tube can be directly placed in the equipment chassis for rapid and large-scale powder suction. After more powder is sucked away and recycled, the printed physical product is gradually exposed. At this time, it is necessary to more carefully suck and recover the powder around and on the surface of the physical product. The existing recycling methods are all operated by handheld powder suction tubes. During the long-term powder suction process, it is time-consuming and labor-intensive. The operator is fatigued, which leads to operational errors and damage to the product when sucking and recovering powder on the surface of the physical product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a powder collecting device for additive manufacturing in view of the above-mentioned technical deficiencies, which fixes the powder suction tube in the chassis of the printing equipment through a support rod, thereby reducing the burden of manual labor and saving time and effort.

[0005] The technical solution adopted by the utility model is: to provide a powder collecting device for additive manufacturing, including a powder suction pipe, the powder suction pipe has a suction nozzle and a connecting pipe, one end of the connecting pipe is connected to the suction nozzle, and the other end is connected to an external negative pressure device; and also includes:

[0006] A support rod, the connecting tube is arranged on the support rod, the support rod has an adjusting part and a locking part, and the adjusting part and the locking part are respectively located on two sides of the support rod;

[0007] An adjusting rod is slidably arranged on the adjusting portion along the axis direction of the supporting rod;

[0008] A first rubber pad, arranged at one end of the adjusting rod, the first rubber pad being used to abut against an inner wall of one side of the device chassis;

[0009] A locking tube, coaxially arranged with the support rod, the locking tube being threadedly connected with the locking portion;

[0010] A second rubber pad is arranged at one end of the locking tube, and the second rubber pad is used to abut against the inner wall of the other side of the equipment chassis.

[0011] Further optimizing the technical solution, the side wall of the adjusting portion has an adjusting groove, the adjusting groove penetrates the side wall of the adjusting portion, and the adjusting groove is arranged parallel to the axis direction of the support rod; the adjusting rod is slidably arranged in the adjusting portion, the adjusting rod has a plurality of threaded holes, and the plurality of threaded holes are arranged in an array in sequence and spaced apart parallel to the axis direction of the support rod; and further comprising:

[0012] A positioning bolt is slidably arranged in the adjustment groove parallel to the axis direction of the support rod. After passing through the adjustment groove, the positioning bolt is threadedly connected with the threaded hole to position the adjustment rod.

[0013] To further optimize the technical solution, the first rubber pad is rotatably disposed on the adjusting rod, the end of the adjusting rod has a first connecting column, and the first rubber pad is rotatably sleeved on the first connecting column.

[0014] Further optimizing the technical solution, the locking tube has a threaded column in the middle, the threaded column is threadedly connected to the locking part, the locking tube side wall has a limiting groove along the circumferential direction; the locking part side wall has a plug-in hole; and further comprising:

[0015] A positioning column is plugged into the plug hole, the positioning column is located in the limiting groove, and a clamping groove is provided on the side of the positioning column. After the locking tube rotates counterclockwise, the side wall of the limiting groove is inserted into the clamping groove.

[0016] To further optimize the technical solution, the second rubber pad is rotatably disposed on the locking tube, the end of the locking tube has a second connecting column, and the second rubber pad is rotatably sleeved on the second connecting column.

[0017] To further optimize the technical solution, the second rubber pad has the same structure as the first rubber pad.

[0018] Further optimization of this technical solution also includes:

[0019] A slip ring is slidably sleeved on the support rod, the slip ring has a mounting groove in its circumference, the middle part of the connecting pipe is clamped in the mounting groove, and the connecting pipe is arranged on the support rod through the slip ring.

[0020] Further optimization of this technical solution also includes:

[0021] A sleeve, slidably sleeved on the suction nozzle;

[0022] A brush is arranged at the end of the sleeve.

[0023] Further optimizing the technical solution, the sleeve has a hanging hole; and further comprising:

[0024] The counterweight block has a hanging rod, and the hanging rod is inserted into the hanging hole.

[0025] The beneficial effects of the utility model are:

[0026] 1. The first rubber pad and the second rubber pad on both sides of the support rod are respectively abutted against the two opposite side walls in the printing device chassis. The middle part of the powder suction tube is arranged on the support rod, which can bear the weight of the powder suction tube. When performing large-area powder suction operations, there is no need for hand-held operation. After the support rod is fixed, the suction nozzle and the powder are relatively sucked and recovered. Within a certain range, the suction nozzle can move with the powder falling, and automatically suck and recover the powder within a certain range.

[0027] 2. The adjusting rod is slidably arranged on the adjusting part, and the spacing distance between the first rubber pad and the second rubber pad can be adjusted to adapt to different equipment chassis; the locking tube is threadedly connected to the locking part, and when it is rotated counterclockwise, it can be pressed against the side wall of the equipment chassis, and when it is rotated clockwise, it is separated from the abutment with the side wall of the equipment chassis, which is convenient for disassembly and assembly of the support rod, and is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the support rod installation structure of the utility model;

[0030] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at the AA position;

[0031] Figure 4 for Figure 3 The schematic diagram of the local enlarged structure at position I in the middle;

[0032] Figure 5 for Figure 3 Schematic diagram of the local enlarged structure at II in the middle;

[0033] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB position (only the locking tube and the positioning column are shown);

[0034] Figure 7 This is a schematic diagram of the casing installation structure of the utility model;

[0035] Figure 8 This is a schematic diagram of the installation structure of the counterweight block of the utility model;

[0036] Explanation of the markings in the figure: 1. Powder suction pipe; 101. Suction nozzle; 102. Connecting pipe; 2. Support rod; 201. Adjustment part; 2011. Adjustment slot; 202. Locking part; 2021. Plug hole; 3. Adjustment rod; 301. Threaded hole; 302. First connecting column; 4. First rubber pad; 5. Locking tube; 501. Threaded column; 502. Limiting slot; 503. Second connecting column; 6. Second rubber pad; 7. Positioning bolt; 8. Positioning column; 801. Slot; 9. Slip ring; 901. Mounting slot; 10. Sleeve; 1001. Hanging hole; 11. Brush; 12. Counterweight; 1201. Hanging rod. DETAILED DESCRIPTION

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0039] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] like Figure 1-8As shown, a powder collecting device for additive manufacturing includes a powder suction tube 1, the powder suction tube 1 has a suction nozzle 101 and a connecting tube 102, one end of the connecting tube 102 is connected to the suction nozzle 101, and the other end is connected to an external negative pressure device; it also includes: a support rod 2, the connecting tube 102 is arranged on the support rod 2, the support rod 2 has an adjusting portion 201 and a locking portion 202, the adjusting portion 201 and the locking portion 202 are respectively located on both sides of the support rod 2; an adjusting rod 3 is slidably arranged on the adjusting portion 201 along the axial direction of the support rod 2; a first rubber pad 4 is arranged at one end of the adjusting rod 3, and the first rubber pad 4 is used to abut against the inner wall of one side of the equipment chassis; a locking tube 5 is coaxially arranged with the support rod 2, and the locking tube 5 is threadedly connected to the locking portion 202; a second rubber pad 6 is arranged at one end of the locking tube 5, and the second rubber pad 6 is used to abut against the inner wall of the other side of the equipment chassis.

[0042] The side wall of the adjustment part 201 has an adjustment groove 2011, which penetrates the side wall of the adjustment part 201 and is arranged parallel to the axial direction of the support rod 2; the adjustment rod 3 is slidably arranged in the adjustment part 201, and the adjustment rod 3 has a plurality of threaded holes 301, and the plurality of threaded holes 301 are arranged in an array in sequence and parallel to the axial direction of the support rod 2; it also includes: a positioning bolt 7, which is slidably arranged in the adjustment groove 2011 parallel to the axial direction of the support rod 2, and the positioning bolt 7 is threadedly connected with the threaded hole 301 after passing through the adjustment groove 2011, so as to position the adjustment rod 3.

[0043] The first rubber pad 4 is rotatably disposed on the adjusting rod 3 . The end of the adjusting rod 3 has a first connecting column 302 . The first rubber pad 4 is rotatably sleeved on the first connecting column 302 .

[0044] A threaded column 501 is provided in the middle of the locking tube 5, and the threaded column 501 is threadedly connected to the locking part 202, and the side wall of the locking tube 5 has a limiting groove 502 along the circumferential direction; the side wall of the locking part 202 has an insertion hole 2021; it also includes: a positioning column 8, the positioning column 8 is plugged into the insertion hole 2021, the positioning column 8 is located in the limiting groove 502, and the side of the positioning column 8 has a card slot 801, after the locking tube 5 rotates counterclockwise, the side wall of the limiting groove 502 is inserted into the card slot 801.

[0045] The second rubber pad 6 is rotatably disposed on the locking tube 5 . The end of the locking tube 5 has a second connecting column 503 . The second rubber pad 6 is rotatably sleeved on the second connecting column 503 .

[0046] The second rubber pad 6 has the same structure as the first rubber pad 4 .

[0047] When in use, one end of the connecting tube 102 is connected to an external negative pressure device. Using a negative pressure device to absorb powder is an existing conventional technical means, and this article does not illustrate the negative pressure device. After the printing device completes the printing of the physical product, a lot of powder is contained in the lower part of the device chassis. At this time, the end cover of the device chassis is opened, and the support rod 2 is placed between the two opposite side walls of the device chassis. The first rubber pad 4 and the second rubber pad 6 are respectively abutted on the two side walls, and then the locking tube 5 is rotated counterclockwise, and the locking tube 5 is unscrewed so that the second rubber pad 6 is pressed against the side wall of the device chassis to achieve the fixation of the support rod 2. The powder suction tube 1 is fixed by the support rod 2, and the powder suction tube 1 is positioned and supported to reduce the manual burden. When sucking powder in an area outside the product structure of a large area, after the support rod 2 is fixed, the suction nozzle 101 can be placed on the upper end of the powder. As the powder descends, the suction nozzle 101 can also follow the descent to absorb powder within a certain range, and then the position of the support rod 2 can be adjusted again.

[0048] The adjusting rod 3 and the adjusting part 201 slide to adjust the support to adapt to the length, the adjusting slot 2011 has a certain length, the adjusting bolt can slide in the adjusting slot 2011 to adjust the extension length of the adjusting rod 3, and multiple threaded holes 301 are provided to facilitate long-distance length adjustment. The threaded holes 301 located in the adjusting slot 2011 are used for locking connection of the positioning bolt 7, and the adjustability is strong. The adjusting part 201 can be a tubular structure.

[0049] The locking tube 5 is threadedly connected to the locking part 202 through the threaded column 501. The locking tube 5 can be screwed in or out relative to the support rod 2 during rotation, so as to adjust the extension length of the locking tube 5 and further achieve abutment reinforcement. When the support rod 2 is initially placed, the first rubber pad 4 and the second rubber pad 6 abut against the side wall, and then the locking tube 5 rotates to strengthen the abutment force. When the locking tube 5 rotates clockwise, it is screwed in relative to the support rod 2 for disassembling the support rod 2. When it rotates counterclockwise, it is screwed out relative to the support rod 2 for tightening and fixing the support rod 2.

[0050] The positioning column 8 is inserted into the plug hole 2021 and is located in the limit groove 502. When the locking tube 5 is rotated counterclockwise by a certain angle, the top tightening positioning is achieved. At the same time, the side wall of the limit groove 502 is inserted into the card slot 801 to realize the positioning prompt, so as to avoid the locking tube 5 from rotating too much and causing damage to the side wall of the equipment chassis, thereby improving the safety of use. In conjunction with the adjustment of the extension length of the adjusting rod 3, the initial position of the locking tube 5 is adjustable and adaptable.

[0051] The first rubber pad 4 and the second rubber pad 6 can adopt the same structure to reduce production costs. The first rubber pad 4 can be fixedly connected to the adjusting rod 3 or rotatably connected. The second rubber pad 6 is rotatably connected to the locking tube 5. When the locking tube 5 rotates, the second rubber pad 6 may not rotate to reduce resistance. The rotatable connection can be connected by means of bearings.

[0052] Furthermore, it also includes: a slip ring 9, which is slidably sleeved on the support rod 2, and the slip ring 9 has a mounting groove 901 in the circumference. The middle part of the connecting pipe 102 is clamped in the mounting groove 901, and the connecting pipe 102 is set on the support rod 2 through the slip ring 9.

[0053] When in use, the slip ring 9 can slide on the support rod 2 to adjust the axial position of the suction nozzle 101. The connecting tube 102 is clamped in the installation groove 901, and the middle part of the connecting tube 102 can be fixed to play a supporting and positioning role. The connecting tube 102 is clamped in the installation groove 901, and the clamping position is easy to adjust, which is convenient for adjusting the extended length of the suction nozzle 101.

[0054] Furthermore, it also includes: a sleeve 10 slidably sleeved on the suction nozzle 101 ; and a brush 11 arranged at the end of the sleeve 10 .

[0055] The sleeve 10 has a hanging hole 1001 ; it also includes: a counterweight block 12 having a hanging rod 1201 , and the hanging rod 1201 is inserted into the hanging hole 1001 .

[0056] When in use, the suction nozzle 101 can be a square frame structure, and the sleeve 10 can also be a frame structure adapted to the suction nozzle 101. When the brush 11 follows the sleeve 10 to slide to the outside of the end of the suction nozzle 101, the brush 11 can be used to clean the surface of the printed physical product to better absorb powder recovery.

[0057] The sleeve 10 is hung with a counterweight 12 to strengthen the weight of the suction nozzle 101. When sucking powder from a large area, the suction nozzle 101 can be automatically lowered with the powder by setting the counterweight 12 to complete automatic powder suction without hand-held operation. The counterweight 12 has a hanging rod 1201, which is plugged in and easy to disassemble and assemble. However, when the brush 11 is needed, the counterweight 12 is removed to reduce the weight.

[0058] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A powder collecting device for additive manufacturing, comprising a powder suction pipe (1), wherein the powder suction pipe (1) has a suction nozzle (101) and a connecting pipe (102), wherein one end of the connecting pipe (102) is connected to the suction nozzle (101), and the other end is connected to an external negative pressure device; characterized in that: Also includes: A support rod (2), the connecting tube (102) being arranged on the support rod (2), the support rod (2) comprising an adjusting portion (201) and a locking portion (202), the adjusting portion (201) and the locking portion (202) being respectively located on two sides of the support rod (2); An adjusting rod (3) is slidably arranged on the adjusting portion (201) along the axial direction of the supporting rod (2); A first rubber pad (4) is arranged at one end of the adjusting rod (3), and the first rubber pad (4) is used to abut against an inner wall of one side of the device chassis; A locking tube (5) is coaxially arranged with the support rod (2), and the locking tube (5) is threadedly connected to the locking portion (202); A second rubber pad (6) is arranged at one end of the locking tube (5), and the second rubber pad (6) is used to abut against the inner wall of the other side of the device chassis.

2. The powder collecting device for additive manufacturing according to claim 1, characterized in that: The side wall of the adjusting portion (201) has an adjusting groove (2011), the adjusting groove (2011) penetrates the side wall of the adjusting portion (201), and the adjusting groove (2011) is arranged parallel to the axis direction of the support rod (2); the adjusting rod (3) is slidably arranged in the adjusting portion (201), the adjusting rod (3) has a plurality of threaded holes (301), and the plurality of threaded holes (301) are arranged in an array in sequence and spaced apart from each other in parallel to the axis direction of the support rod (2); and further comprising: A positioning bolt (7) is slidably arranged in the adjustment groove (2011) parallel to the axial direction of the support rod (2); the positioning bolt (7) passes through the adjustment groove (2011) and is threadedly connected to the threaded hole (301) for positioning the adjustment rod (3).

3. The powder collecting device for additive manufacturing according to claim 2, characterized in that: The first rubber pad (4) is rotatably arranged on the adjusting rod (3); the end of the adjusting rod (3) has a first connecting column (302), and the first rubber pad (4) is rotatably sleeved on the first connecting column (302).

4. The powder collecting device for additive manufacturing according to claim 1, characterized in that: The locking tube (5) has a threaded column (501) in the middle thereof, the threaded column (501) being threadedly connected to the locking portion (202); the side wall of the locking tube (5) has a limiting groove (502) along the circumferential direction; the side wall of the locking portion (202) has a plug-in hole (2021); and further comprising: A positioning column (8), wherein the positioning column (8) is plugged into the plug hole (2021), the positioning column (8) is located in the limiting groove (502), and a side surface of the positioning column (8) has a slot (801), and after the locking tube (5) rotates counterclockwise, the side wall of the limiting groove (502) is inserted into the slot (801).

5. The powder collecting device for additive manufacturing according to claim 4, characterized in that: The second rubber pad (6) is rotatably arranged on the locking tube (5); the end of the locking tube (5) has a second connecting column (503), and the second rubber pad (6) is rotatably sleeved on the second connecting column (503).

6. The powder collecting device for additive manufacturing according to claim 5, characterized in that: The second rubber pad (6) has the same structure as the first rubber pad (4).

7. The powder collecting device for additive manufacturing according to claim 1, characterized in that: Also includes: A slip ring (9) is slidably sleeved on the support rod (2); the slip ring (9) has a mounting groove (901) in the circumference; the middle of the connecting tube (102) is clamped in the mounting groove (901); and the connecting tube (102) is arranged on the support rod (2) through the slip ring (9).

8. The powder collecting device for additive manufacturing according to claim 1, characterized in that: Also includes: A sleeve (10) slidably sleeved on the suction nozzle (101); A brush (11) is arranged at the end of the sleeve (10).

9. The powder collecting device for additive manufacturing according to claim 8, characterized in that: The sleeve (10) has a hanging hole (1001); and further comprises: The counterweight (12) has a hanging rod (1201), and the hanging rod (1201) is inserted into the hanging hole (1001).

Images