Metal powder flowability detection device for additive manufacturing

Abstract

The utility model relates to detection device technical field, and disclose a kind of metal powder flowability detection device for additive manufacturing, including bottom plate, mounting in the top of bottom plate's stand, detachably connected in the extension frame of stand surface and the funnel body detachably connected in the extension frame inside, further include: the guide frame welded in the bottom of extension frame two sides;The utility model is driven by the gravity of metal powder falling to descend receiving mechanism, lifting plate and sliding plate cooperation drive rotating mechanism rotation, when metal powder falls, rotating mechanism rotates under the action of gravity and cooperates with force mechanism, to send sound and remind staff, at this time staff can stop timing, solved the current part detection device when using, staff needs to continuously observe the falling state of metal powder, detection result is easily influenced by staff eye movement and other factors.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically a metal powder flowability detection device for additive manufacturing. Background Technology

[0002] In additive manufacturing, the flowability of metal powder has a significant impact. Metal powder with poor flowability is prone to forming clumps or uneven accumulation during the powder spreading process, resulting in an uneven surface of the printed layer, which in turn affects the subsequent laser melting effect and printing accuracy.

[0003] Currently, some metal powder flowability testing devices determine flowability by measuring the time it takes for 50g of metal powder to flow through a standard funnel with a 2.5mm aperture. Specifically, the operator pours the metal powder into the funnel, starts timing the moment the powder falls, and stops timing the moment the powder has completely fallen. However, stopping the timing requires the operator to continuously observe the falling state of the powder with the naked eye. This method can easily lead to eye fatigue, and the method of observation by the naked eye is prone to errors due to the operator's standing angle and eye movements, which can affect the final test results and even affect subsequent additive manufacturing operations. Utility Model Content

[0004] The purpose of this invention is to provide a metal powder flowability testing device for additive manufacturing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metal powder flowability testing device for additive manufacturing, comprising a base plate, a column mounted on the top of the base plate, an extension frame detachably connected to the surface of the column, and a funnel body detachably connected to the inside of the extension frame, and further comprising: Guide frames are welded to both sides of the bottom of the extension frame. Guide rods slide through the bottom of the guide frames. Lifting plates are fixedly connected to the bottom of the guide rods. A material receiving mechanism that can be stably lifted and lowered is installed between the two lifting plates. A positioning mechanism is detachably connected to the surface of the column. A bracket is installed on the surface of the positioning mechanism. A force-bearing mechanism and a rotating mechanism that can strike the force-bearing mechanism are installed on the surface of the bracket. A sliding plate is installed at one end of the rotating mechanism. Grooves are provided on both the upper and lower sides of the inner wall of the lifting plate. The sliding plate is slidably connected to the grooves.

[0006] Preferably, the positioning mechanism includes a collar that is slidably sleeved on the surface of the column, a positioning rod that is fixedly connected to the top of the base plate, the collar slidingly passing through the positioning rod, a U-shaped rod that is detachably connected to the surface of the positioning rod, the bottom of the U-shaped rod contacting the top of the collar, and both ends of the bracket being fixedly connected to the surface of the collar.

[0007] Preferably, the rotating mechanism includes a hollow ring rotatably fitted onto the surface of the support, with a connecting rod and a rotating rod welded to both sides of the hollow ring surface, the sliding plate being fixedly connected to one end of the connecting rod, and a counterweight being fixedly connected to one end of the rotating rod.

[0008] Preferably, the force-bearing mechanism includes a fixed rod welded to the surface of the bracket, a support plate welded inside the fixed rod, a limit rod slidingly passing through the top of the support plate, a striking plate fixedly connected to the top of the limit rod, and the counterweight contacting the surface of the striking plate.

[0009] Preferably, the force-bearing mechanism includes a fixed rod welded to the surface of the bracket, a support plate welded inside the fixed rod, a limit rod slidingly passing through the top of the support plate, a striking plate fixedly connected to the top of the limit rod, and the counterweight contacting the surface of the striking plate.

[0010] Preferably, the top and bottom of the slide are both embedded with balls, and the surface of the balls is in contact with the inner wall of the groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes the gravity generated by falling metal powder to drive the receiving mechanism downwards. The lifting plate and sliding plate work together to drive the rotating mechanism to rotate. When the metal powder has finished falling, the rotating mechanism rotates under the action of gravity and works with the force-bearing mechanism to emit a sound and remind the staff. At this time, the staff can stop the timer. This solves the problem that some current detection devices require staff to continuously observe the falling state of the metal powder, and the detection results are easily affected by factors such as the staff's eye movements. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of another aspect of the present invention; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the lifting plate, crossbar, sliding plate, and rotating mechanism in this utility model; Figure 5 This is a three-dimensional structural diagram of the extension frame of this utility model cut open; Figure 6 This utility model Figure 3 Enlarged structural diagram at point A; Figure 7 This is a three-dimensional structural diagram of the lifting plate of this utility model.

[0013] In the diagram: 1. Base plate; 2. Column; 3. Extension frame; 4. Funnel body; 5. Guide frame; 6. Guide rod; 7. Lifting plate; 8. Receiving mechanism; 81. Collecting hopper; 82. Rectangular block; 83. Receiving block; 9. Rubber sheet; 10. Crossbar; 11. Groove; 12. Slide plate; 13. Ball bearing; 14. Positioning mechanism; 141. Positioning rod; 142. Collar; 143. U-shaped rod; 15. Bracket; 16. Rotating mechanism; 161. Hollow ring; 162. Connecting rod; 163. Rotating rod; 164. Counterweight; 17. Force-bearing mechanism; 171. Fixing rod; 172. Support plate; 173. Limiting rod; 174. Striking plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-7 As shown, an additive manufacturing metal powder flowability testing device includes a base plate 1, a column 2 mounted on the top of the base plate 1, an extension frame 3 detachably connected to the surface of the column 2, and a funnel body 4 detachably connected to the inside of the extension frame 3. A fixed amount of metal powder flows downward from the funnel body 4. The operator judges the flowability of the metal powder by the time it takes for the metal powder to completely flow down. A positioning mechanism 14 is detachably connected to the surface of the column 2. The positioning mechanism 14 includes a collar 142 that is slidably sleeved on the surface of the column 2. A positioning rod 141 is fixedly connected to the top of the base plate 1. The collar 142 slides through the positioning rod 141. A U-shaped rod 143 is detachably connected to the surface of the positioning rod 141. The bottom of the U-shaped rod 143 contacts the top of the collar 142.

[0016] The worker places the collar 142 onto the column 2. As the collar 142 descends, it passes through the positioning rod 141. The worker then passes the U-shaped rod 143 through the positioning rod 141 to fix the position of the collar 142. A bracket 15 is mounted on the surface of the positioning mechanism 14. Both ends of the bracket 15 are fixedly connected to the surface of the collar 142. A rotating mechanism 16 is provided on the surface of the bracket 15. A sliding plate 12 is mounted on one end of the rotating mechanism 16. The rotating mechanism 16 includes a hollow ring 161 that is rotatably fitted onto the surface of the bracket 15. A connecting rod 162 and a rotating rod 163 are welded to both sides of the surface of the hollow ring 161, respectively. The sliding plate 12 is fixedly connected to one end of the connecting rod 162, and a counterweight 164 is fixedly connected to one end of the rotating rod 163.

[0017] Under the action of gravity, the counterweight 164 drives the rotating rod 163 to rotate, and the hollow ring 161 drives the connecting rod 162 to rotate accordingly. A force-bearing mechanism 17 is installed on the surface of the bracket 15. The force-bearing mechanism 17 includes a fixed rod 171 welded to the surface of the bracket 15. A support plate 172 is welded inside the fixed rod 171. The top of the support plate 172 slides through a limit rod 173. A striking plate 174 is fixedly connected to the top of the limit rod 173. When the counterweight 164 rotates and comes into contact with the striking plate 174, it can strike the striking plate 174. The striking plate 174 moves towards the position of the support plate 172 under the force.

[0018] The striking plate 174 can make a sound when it collides with the support plate 172, reminding the staff to stop the timer. The limit rod 173 can guide the support plate 172 when it moves. Guide frames 5 are welded on both sides of the bottom of the extension frame 3. The bottom of the guide frame 5 is slidably connected to the guide rod 6. The bottom of the guide rod 6 is fixedly connected to the lifting plate 7. The two lifting plates 7 are fixedly connected to the crossbar 10. The crossbar 10 can connect the two lifting plates 7 to ensure that the lifting plates 7 can move up and down synchronously. A receiving mechanism 8 is installed between the two lifting plates 7.

[0019] The receiving mechanism 8 is located below the funnel body 4. When the powder inside the funnel body 4 falls, it can apply force to the receiving mechanism 8 and drive the receiving mechanism 8 to descend. The receiving mechanism 8 includes a collecting hopper 81 welded between two lifting plates 7. Several rectangular blocks 82 are fixedly connected inside the collecting hopper 81. One end of the rectangular block 82 is fixedly connected to a receiving block 83. The receiving block 83 is lowered by force when the metal powder falls. More preferably, the receiving block 83 can be hollow. A rubber sheet 9 is embedded at the bottom of the receiving block 83. The rubber sheet 9 can prevent the bottom of the receiving block 83 from being bumped. Grooves 11 are provided on the upper and lower sides of the inner wall of the lifting plate 7. The sliding plate 12 is slidably connected to the groove 11. Ball bearings 13 are embedded on the top and bottom of the sliding plate 12. The surface of the ball bearings 13 is in contact with the inner wall of the groove 11. The ball bearings 13 can increase the smoothness of the sliding plate 12 when it moves.

[0020] Working principle: The operator installs the positioning mechanism 14 and the extension frame 3 onto the surface of the column 2 in sequence, and then places the funnel body 4 into the extension frame 3. The device is then assembled and positioned... Figure 1After reaching the indicated state, the operator can first pull the striking plate 174 away from the support plate 172, then weigh 50g of metal powder and pour it into the funnel body 4. During this process, the operator can use their finger to block the bottom of the funnel body 4 to prevent the metal powder from falling. Afterward, the operator quickly removes their finger and starts timing. The metal powder falls from the inside of the funnel body 4 and applies force to the receiving block 83. The lifting plate 7 then descends. The guide frame 5 and guide rod 6 work together to guide the movement of the lifting plate 7. The receiving mechanism 8 drives the lifting plate 7 to descend stably. During descent, the slide plate 12 descends and moves inside the groove 11. At this time, the connecting rod 162 drives the rotating rod 163 to rotate through the hollow ring 161, and the counterweight 164 moves away from the striking plate 174. After the metal powder is fed, the counterweight 164 rotates under the action of gravity and strikes the striking plate 174. The striking plate 174 moves quickly to the position of the support plate 172. The striking plate 174 and the support plate 172 cooperate to make noise and remind the staff. The staff can stop the timer and judge the flowability of the metal powder based on the time when the sound is heard.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal powder flowability testing device for additive manufacturing, comprising a base plate (1), a column (2) mounted on the top of the base plate (1), an extension frame (3) detachably connected to the surface of the column (2), and a funnel body (4) detachably connected to the interior of the extension frame (3), characterized in that, Also includes: Guide frames (5) are welded to the bottom sides of the extension frame (3). Guide rods (6) slide through the bottom of the guide frames (5). Lifting plates (7) are fixedly connected to the bottom of the guide rods (6). A material receiving mechanism (8) that can be stably lifted and lowered is installed between the two lifting plates (7). A positioning mechanism (14) is detachably connected to the surface of the column (2). A bracket (15) is installed on the surface of the positioning mechanism (14). A force-bearing mechanism (17) and a rotating mechanism (16) that can strike the force-bearing mechanism (17) are installed on the surface of the bracket (15). A sliding plate (12) is installed at one end of the rotating mechanism (16). Grooves (11) are provided on the upper and lower sides of the inner wall of the lifting plate (7). The sliding plate (12) is slidably connected to the groove (11).

2. The metal powder flowability testing device for additive manufacturing according to claim 1, characterized in that: The receiving mechanism (8) includes a material collection hopper (81) welded between two lifting plates (7). Several rectangular blocks (82) are fixedly connected inside the material collection hopper (81), and a receiving block (83) is fixedly connected to one end of each rectangular block (82).

3. The metal powder flowability testing device for additive manufacturing according to claim 1, characterized in that: The rotating mechanism (16) includes a hollow ring (161) rotatably sleeved on the surface of the bracket (15). A connecting rod (162) and a rotating rod (163) are welded to both sides of the surface of the hollow ring (161). The sliding plate (12) is fixedly connected to one end of the connecting rod (162), and a counterweight (164) is fixedly connected to one end of the rotating rod (163).

4. The metal powder flowability testing device for additive manufacturing according to claim 3, characterized in that: The force-bearing mechanism (17) includes a fixed rod (171) welded to the surface of the bracket (15). A support plate (172) is welded inside the fixed rod (171). A limit rod (173) slides through the top of the support plate (172). A striking plate (174) is fixedly connected to the top of the limit rod (173). The counterweight (164) is in contact with the surface of the striking plate (174).

5. The metal powder flowability testing device for additive manufacturing according to claim 1, characterized in that: The positioning mechanism (14) includes a collar (142) that is slidably sleeved on the surface of the column (2). A positioning rod (141) is fixedly connected to the top of the base plate (1). The collar (142) slides through the positioning rod (141). A U-shaped rod (143) is detachably connected to the surface of the positioning rod (141). The bottom of the U-shaped rod (143) contacts the top of the collar (142). Both ends of the bracket (15) are fixedly connected to the surface of the collar (142).

6. The metal powder flowability testing device for additive manufacturing according to claim 1, characterized in that: The top and bottom of the slide plate (12) are both fitted with balls (13), and the surface of the balls (13) is in contact with the inner wall of the groove (11).

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