Forming cylinder powder cleaning device for additive printing equipment

Abstract

The invention relates to the technical field of powder treatment, and particularly discloses a forming cylinder powder cleaning device for additive printing equipment, which comprises a rack and a sealed cabin fixedly mounted in the rack, a horizontally arranged supporting table is fixedly mounted in the sealed cabin, and a supporting frame is fixedly mounted at the top of the supporting table; a rotary dumping unit is arranged on the front side of the supporting frame, a clamping unit used for clamping and fixing a formed cylinder body is arranged on the front side of the rotary dumping unit, and a leakage-proof powder cleaning unit and two matched vibration units which are in bilateral symmetry are arranged on the top of the clamping unit. And a sealed environment is formed, metal powder is effectively prevented from flying into the sealed cabin in the cleaning process, secondary pollution of the metal powder to the interior of the sealed cabin is avoided, and then the cleaning frequency and cleaning difficulty of the interior of the sealed cabin are greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of powder processing, and more specifically, to a forming cylinder powder cleaning device for additive printing equipment. Background Art

[0002] Powder fusion metal additive manufacturing (also known as metal 3D printing) is an advanced manufacturing technology that builds three-dimensional solid parts by adding materials layer by layer. In the metal additive manufacturing process, metal powder as raw material is selectively melted or sintered to form complex geometric shapes and structures, which makes it possible to produce parts that are difficult to achieve with traditional manufacturing methods.

[0003] In the layer-by-layer construction process of metal 3D printing, only the metal powder in a specific area will be melted and solidified by the laser or electron beam when printing each layer, while the other unmelted powder remains loose and continues to exist in the forming cylinder, serving as support material or filler for subsequent layers. At the same time, for complex structures or suspended parts, support structures need to be added during printing. These support structures need to be removed after printing is completed, and the powder around them will remain. The remaining powder needs to be effectively removed for the next round of printing or post-processing of the printed parts.

[0004] Currently, the most common powder cleaning method is the integrated powder cleaning system. Specifically: the operating system and vibration system of the powder cleaning machine pour the metal powder into the hopper through flipping, rotation, vibration and other actions to remove the powder attached to the surface of the parts and the supporting structure. At the same time, it is equipped with a dust blower to clean complex parts, but this powder cleaning method still has certain defects: 1. At present, it is necessary to flip, dump and vibrate the molding cylinder during powder cleaning, which makes the metal powder easily fly into the sealed cabin, causing secondary pollution, thereby greatly increasing the cleaning frequency and difficulty of the sealed cabin. At the same time, relying on gravity and vibration, it cannot guarantee that all powder can fall smoothly into the hopper, resulting in a lot of residual powder and incomplete cleaning. In addition, the dust concentration is high during the flipping and dumping process, which increases the risk of dust explosion. Inert gas needs to be filled to prevent explosion, which increases the additional gas supply and monitoring costs, further increases the processing cost, and affects the safety of the operating environment.

[0005] 2. Currently, a separate screening process is required after metal powder cleaning to remove large particle residues in the metal powder so that it can be reused for the next printing, which prolongs the 3D printing cycle and reduces production efficiency. Summary of the invention

[0006] The invention provides a forming cylinder powder cleaning device for additive printing equipment, which solves the technical problem in the prior art that metal powder is easily scattered into a sealed cabin.

[0007] The present invention provides a forming cylinder powder cleaning device for additive printing equipment, comprising a frame and a sealed cabin fixedly installed in the frame, a horizontally arranged support platform fixedly installed in the sealed cabin, a support frame fixedly installed on the top of the support platform, a rotating dumping unit is arranged on the front side of the support frame, a clamping unit for clamping and fixing the forming cylinder body is arranged on the front side of the rotating dumping unit, an anti-leakage powder cleaning unit and two left-right symmetrical matching vibration units are arranged on the top of the clamping unit, the matching vibration unit comprises a docking matching component, a driving component for driving the docking matching component, a side vibration component and a control component for controlling the side vibration component, and the anti-leakage powder cleaning unit comprises a snap-fit ​​powder cleaning component and an exhaust component.

[0008] The clamping unit includes a workbench, and the powder cleaning assembly includes a mounting frame fixedly mounted on the top of the workbench, a powder collecting cover is mounted on the mounting frame through two L-shaped rods that rotate together, the bottom of the powder collecting cover is open and the size of the opening matches the size of the inner wall of the forming cylinder, a filter is fixedly mounted inside the powder collecting cover, a slag guide box is fixedly mounted on the rear side of the mounting frame, and a square corrugated pipe is installed between the slag guide box and the powder collecting cover. When cleaning powder, the powder collecting cover is buckled on the top of the forming cylinder, and metal powder will not escape during the entire powder cleaning process.

[0009] Furthermore, the rotary dumping unit includes a rotating seat rotatably installed on the front side of the support platform, a control motor for controlling the rotation of the rotating seat is fixedly installed on the left side of the support platform, and a workbench is fixedly installed on the front side of the rotating seat. An opening for discharging metal residues that cannot pass through the filter net is opened on the right side of the slag guide box, and the bottom inner wall of the slag guide box is higher on the left and lower on the right, so as to facilitate the discharge of metal residues that fall into the slag guide box.

[0010] Furthermore, the clamping unit also includes two clamping components which are arranged on the workbench and are symmetrically arranged on the left and right, and the clamping components are used to clamp and fix the forming cylinder body when cleaning the powder.

[0011] Furthermore, the exhaust assembly includes an exhaust fan fixedly mounted on the top of the powder collecting hood and an air outlet pipe fixedly mounted on the front side of the exhaust fan, the air outlet pipe is connected to the external collecting component, and an exhaust pipe is installed between the exhaust fan and the powder collecting hood.

[0012] Furthermore, the docking assembly includes a gantry fixedly installed on the top of the clamping component, two reset springs symmetrically installed in the front and back are fixedly installed on the top inner wall of the gantry, a reset plate is commonly installed at the bottom ends of the two reset springs, two sliding rods that slide through the gantry and are symmetrical in the front and back are fixedly installed on the top of the reset plate, a circular frame is commonly installed on the top of the two sliding rods, and two limit rods that slide through the gantry and are symmetrical in the front and back are commonly installed between the circular frame and the reset plate.

[0013] Furthermore, a reciprocating rod is fixedly installed at the bottom of the reset plate through a reset spring. The top end of the reciprocating rod slides through the gantry and the circular frame and is fixedly installed with a top punch plate. Two front-to-back symmetrical matching frames are fixedly installed on the top of the circular frame. When the powder collecting cover is flipped 90° and snapped onto the top of the forming cylinder, it will press down on the matching frame to drive the reciprocating rod to move downward and cooperate with the driving assembly.

[0014] Furthermore, the driving assembly includes a mounting seat fixedly installed on the top of the clamping component and a driving motor fixedly installed on the side of the mounting seat away from the forming cylinder body. The output end of the driving motor slides through the mounting seat and is fixedly installed with a cam. The bottom end of the reciprocating rod is fixedly installed with a pulley that cooperates with the cam. The downward movement of the reciprocating rod will drive the pulley to cooperate with the cam.

[0015] Furthermore, the side shock assembly includes L-shaped plates symmetrically installed on the front and rear inner walls of the circular frame, and a sliding groove is opened on the adjacent side of the two L-shaped plates. A slider is slidably connected in the sliding groove, and a round rod is installed between the two sliders. Two side punch plates symmetrically installed front and back are fixedly installed on the outer side of the round rod.

[0016] Furthermore, the control assembly includes a driving plate fixedly mounted on one side of the reciprocating rod corresponding to the slide slot and an inclined slot provided on the driving plate, wherein the inclined slot is higher on the left and lower on the right, and the round rod is slidably connected in the inclined slot.

[0017] Furthermore, an automatic door is fixedly installed on the front side of the frame, which is closed during the powder cleaning process and opened to take out the molding cylinder after the powder cleaning is completed. A drop hopper is fixedly installed at the bottom of the sealed cabin, and the bottom of the drop hopper passes through the support platform.

[0018] The beneficial effects of the present invention are: 1. In the present application, during the entire powder cleaning process, the powder collecting cover is tightly fastened to the top of the synthetic cylinder body to form a sealed environment, which effectively prevents metal powder from flying into the sealed cabin during the cleaning process, avoiding secondary contamination of the sealed cabin by metal powder, thereby greatly reducing the frequency and difficulty of cleaning the sealed cabin.

[0019] 2. In the present application, the exhaust assembly directly extracts the metal powder from the forming cylinder and transports it to the external collection component through the outlet pipe, ensuring that most of the powder is collected centrally and not scattered in the sealed cabin. This not only improves the cleaning efficiency, but also significantly reduces the amount of residual powder in the sealed cabin, further reducing the need for cleaning. At the same time, since the metal powder will not fly into the sealed cabin, the dust concentration in the sealed cabin is greatly reduced, thereby avoiding the risk of dust explosion. There is no need to fill the sealed cabin with argon gas to prevent dust explosion, further reducing the processing cost.

[0020] 3. In the present application, by integrating a filter in the powder collecting hood, the filtered and extracted metal powder can be directly reused for the next printing, eliminating the separate screening process before reuse, thereby shortening the entire 3D printing cycle and improving production efficiency. Especially in large-scale 3D printing production, the simplification of the process can significantly improve the turnover speed of the production line.

[0021] 4. In the present application, the multi-stage impact vibration mechanism of the top punch plate and the side punch plate significantly improves the cleaning effect of the metal powder through multi-level and multi-directional vibration and impact. Through the coordinated work of the top punch plate and the side punch plate, combined with the vibration transmission effect, all-round vibration cleaning is achieved, ensuring that the metal powder on the inner wall of the forming cylinder and the powder collecting cover can be completely loosened and collected, providing a more efficient, safe, environmentally friendly and economical solution for metal powder processing in the field of additive manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the sealing cabin, the material dropping hopper, the support platform and the forming cylinder body of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotary dumping unit, the support frame and the sealed cabin part of the present invention.

[0025] Figure 4 It is a partial three-dimensional structural schematic diagram of the vibration unit, the anti-leakage powder cleaning unit and the clamping unit of the present invention.

[0026] Figure 5 It is a partial three-dimensional structural schematic diagram of the mounting frame, L-shaped rod, powder collecting cover, filter screen and slag guide box of the present invention.

[0027] Figure 6 The utility model is a three-dimensional structural schematic diagram of the gantry, the first reset spring, the reset plate, the sliding rod, the reciprocating rod and the reset spring of the present invention.

[0028] Figure 7 It is a partial three-dimensional structural schematic diagram of the L-shaped plate, the slide groove, the slider, the side punch plate and the drive plate of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the forming cylinder body, the support frame, the control motor and the square corrugated pipe part of the present invention.

[0030] In the figure: 1, frame; 2, sealed cabin; 3, support table; 4, support frame; 5, rotating dumping unit; 6, clamping unit; 7, matching vibration unit; 8, leak-proof powder cleaning unit; 9, forming cylinder; 10, automatic door; 11, drop hopper; 501, rotating seat; 502, control motor; 601, workbench; 602, clamping part; 701, docking matching component; 702, driving component; 703, side vibration component; 704, control component; 7010, matching frame; 7011, gantry; 7012, reset spring 1; 7013, reset plate; 7014, slide rod; 7015, reciprocating rod; 7016, reset spring 2; 70 17. Limit rod; 7018. Reciprocating frame; 7019. Top punch plate; 7021. Mounting seat; 7022. Cam; 7023. Pulley; 7024. Driving motor; 7031. L-shaped plate; 7032. Slide groove; 7033. Sliding block; 7034. Side punch plate; 7035. Round rod; 7041. Driving plate; 7042. Inclined groove; 801. Snap-fit ​​powder cleaning assembly; 802. Exhaust assembly; 8011. Mounting frame; 8012. L-shaped rod; 8013. Powder collecting cover; 8014. Filter screen; 8015. Slag guide box; 8016. Square corrugated pipe; 8021. Exhaust fan; 8022. Exhaust pipe; 8023. Air outlet pipe. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 4In this embodiment, a powder cleaning device for a forming cylinder of an additive printing device is provided, comprising a frame 1 and a sealed cabin 2 fixedly installed in the frame 1, a horizontally arranged support platform 3 fixedly installed in the sealed cabin 2, a support frame 4 fixedly installed on the top of the support platform 3, a rotating dumping unit 5 is arranged on the front side of the support frame 4, a clamping unit 6 for clamping and fixing a forming cylinder 9 is arranged on the front side of the rotating dumping unit 5, a leak-proof powder cleaning unit 8 and two left-right symmetrical cooperating vibration units 7 are arranged on the top of the clamping unit 6, and the cooperating vibration units 7 are arranged on the top of the clamping unit 6. The driving unit 7 includes a docking assembly 701, a driving assembly 702 for driving the docking assembly 701, a side vibration assembly 703 and a control assembly 704 for controlling the side vibration assembly 703. The leak-proof powder cleaning unit 8 includes a snap-fit ​​powder cleaning assembly 801 and an exhaust assembly 802. An automatic door 10 is fixedly installed on the front side of the frame 1. The automatic door 10 is closed during the powder cleaning process and opened after the powder cleaning is completed to take out the molding cylinder 9. A drop hopper 11 is fixedly installed at the bottom of the sealed cabin 2, and the bottom of the drop hopper 11 passes through the support platform 3.

[0033] See also Figure 4 The clamping unit 6 includes a workbench 601 and two clamping components 602 arranged on the workbench 601 and symmetrically arranged on the left and right. The clamping components 602 are used to clamp and fix the forming cylinder body 9 when cleaning powder.

[0034] See also Figure 4 and Figure 5 The snap-fit ​​powder cleaning component 801 includes a mounting frame 8011 fixedly mounted on the top of the workbench 601, a powder collecting cover 8013 is mounted on the mounting frame 8011 through two L-shaped rods 8012 for joint rotation, the bottom of the powder collecting cover 8013 is open and the size of the opening is consistent with the inner wall size of the forming cylinder body 9, a filter screen 8014 is fixedly mounted in the powder collecting cover 8013, a slag guide box 8015 is fixedly mounted on the rear side of the mounting frame 8011, a square corrugated pipe 8016 is jointly installed between the slag guide box 8015 and the powder collecting cover 8013, an opening for guiding out metal residues that cannot pass through the filter screen 8014 is opened on the right side of the slag guide box 8015, and the bottom inner wall of the slag guide box 8015 is higher on the left and lower on the right, so as to facilitate the guiding out of the metal residues falling into the slag guide box 8015.

[0035] See also Figure 2 , Figure 3 and Figure 4 The rotating dumping unit 5 includes a rotating seat 501 rotatably mounted on the front side of the support platform 3 , a control motor 502 for controlling the rotating seat 501 to rotate is fixedly mounted on the left side of the support platform 3 , and a workbench 601 is fixedly mounted on the front side of the rotating seat 501 .

[0036] See also Figure 4 and Figure 5The exhaust assembly 802 includes an exhaust fan 8021 fixedly installed on the top of the powder collecting cover 8013 and an air outlet pipe 8023 fixedly installed on the front side of the exhaust fan 8021, the air outlet pipe 8023 is connected to the external collecting component, an exhaust pipe 8022 is installed between the exhaust fan 8021 and the powder collecting cover 8013, a sealing strip is provided at the bottom of the powder collecting cover 8013, and the connection port of the square corrugated pipe 8016 and the powder collecting cover 8013 is located on the side of the filter 8014 away from the exhaust pipe 8022, so as to prevent the metal powder from entering the slag guide box 8015 from the square corrugated pipe 8016 when the exhaust fan 8021 extracts the metal powder.

[0037] When in use, the powder-cleaning molding cylinder 9 is first placed on the top of the workbench 601 by an external transport device, and then the automatic door 10 is closed, and the molding cylinder 9 is locked and fixed by the clamping member 602 on the workbench 601 (such as Figure 8 As shown), the transport device is then withdrawn, and then the L-shaped rod 8012 is controlled by an external power supply to rotate 90°, driving the powder collecting cover 8013 to flip 90° so that it is tightly buckled with the top of the synthetic cylinder 9 (as shown in FIG. Figure 4 As shown), a sealed environment is formed, thereby sealing the space between the forming cylinder 9 and the powder collecting cover 8013, so as to avoid leakage of metal powder in the forming cylinder 9 during the powder cleaning process. Then, the rotating seat 501 is controlled by the control motor 502 to rotate slowly and uniformly, thereby driving the workbench 601 to rotate, and then driving the forming cylinder 9 and the powder collecting cover 8013 to rotate synchronously. As the workbench 601 gradually rotates, when the opening of the forming cylinder 9 gradually rotates downward, the metal powder in the forming cylinder 9 is poured into the powder collecting cover 8013 under the action of gravity and falls on the filter 8014. At the same time, the exhaust fan 8021 extracts the metal powder falling on the filter 8014 through the exhaust pipe 8022 and transports it to the external collection component through the outlet pipe 8023 for collection for recycling (the filter hole aperture of the filter 8014 matches the particle size of the qualified metal powder to ensure that large particles The particle residue is effectively intercepted, and the fine metal powder can be extracted through the exhaust component 802), and the suction force generated by the exhaust pipe 8022 can also adsorb the metal powder in the forming cylinder 9 into the powder collecting cover 8013, thereby greatly improving the cleaning efficiency of the metal powder. The metal powder extracted after filtering can be directly reused for the next printing, eliminating the separate screening process before reuse, so that the entire 3D printing cycle can be shortened, thereby improving production efficiency. Especially in large-scale 3D printing production, the simplification of the process can significantly improve the turnover speed of the production line. During the entire powder cleaning process, the powder collecting cover 8013 is tightly buckled on the top of the synthetic cylinder 9 to form a sealed environment, which effectively prevents the metal powder from flying into the sealed cabin 2 during the cleaning process, avoiding the secondary pollution of the sealed cabin 2 by the metal powder, thereby greatly reducing the frequency and difficulty of cleaning the sealed cabin 2.

[0038] After the powder cleaning is completed, the L-shaped rod 8012 is controlled by an external power supply to rotate 90°, driving the powder collecting cover 8013 to flip 90° and reset (such as Figure 8 As shown in the figure, in preparation for the next powder cleaning operation, when the powder collecting cover 8013 is flipped and reset, the metal residue blocked by the filter 8014 (during the printing process, the metal powder in some areas has only undergone partial melting, forming semi-molten particles, which are usually large and irregular in shape and cannot be directly reused) will enter the slag guide box 8015 through the square bellows 8016 under the action of gravity, and then slide out along the bottom inner wall of the slag guide box 8015, and finally be discharged through the drop hopper 11 for centralized treatment, thereby achieving the effect of automatic slag discharge.

[0039] It should be noted that the contact surface between the clamping component 602 and the forming cylinder body 9 is provided with a soft pad to reduce the pressure concentration point during clamping and avoid damage to the forming cylinder body 9.

[0040] See also Figure 4 , Figure 6 and Figure 7 The docking assembly 701 includes a gantry 7011 fixedly installed on the top of the clamping part 602, two return springs 7012 are fixedly installed on the top inner wall of the gantry 7011, and a return plate 7013 is installed at the bottom ends of the two return springs 7012. Two sliding rods 7014 that slide through the gantry 7011 and are symmetrical front and back are fixedly installed on the top of the return plate 7013. A circular frame 7018 is installed at the top of the two sliding rods 7014. Two limit rods 7017 that slide through the gantry 7011 and are symmetrical front and back are installed between the circular frame 7018 and the return plate 7013.

[0041] See also Figure 4 , Figure 6 and Figure 7 A reciprocating rod 7015 is fixedly installed at the bottom of the reset plate 7013 through a reset spring 7016. The top of the reciprocating rod 7015 slides through the gantry 7011 and the circular frame 7018 and is fixedly installed with a top punch plate 7019. Two front-to-back symmetrical matching frames 7010 are fixedly installed on the top of the circular frame 7018. When the powder collecting cover 8013 is flipped 90° and snapped onto the top of the forming cylinder 9, it will press down the matching frame 7010 to drive the reciprocating rod 7015 to move downward and cooperate with the driving assembly 702.

[0042] See also Figure 4 , Figure 6 and Figure 7The driving assembly 702 includes a mounting seat 7021 fixedly mounted on the top of the clamping component 602 and a driving motor 7024 fixedly mounted on the side of the mounting seat 7021 away from the forming cylinder body 9. The output end of the driving motor 7024 slides through the mounting seat 7021 and is fixedly mounted with a cam 7022. The bottom end of the reciprocating rod 7015 is fixedly mounted with a pulley 7023 that cooperates with the cam 7022. The downward movement of the reciprocating rod 7015 will drive the pulley 7023 to cooperate with the cam 7022.

[0043] See also Figure 4 , Figure 6 and Figure 7 The side shock assembly 703 includes L-shaped plates 7031 symmetrically installed on the front and rear inner walls of the circular frame 7018. A sliding groove 7032 is opened on the adjacent side of the two L-shaped plates 7031. A slider 7033 is slidably connected in the sliding groove 7032. A round rod 7035 is installed between the two sliders 7033. Two side punch plates 7034 symmetrically installed on the outer side of the round rod 7035 are fixedly installed.

[0044] It should be noted that the contact surface between the top punch plate 7019 and the powder collecting cover 8013 and the contact surface between the side punch plate 7034 and the forming cylinder body 9 are both provided with soft pads.

[0045] See also Figure 4 , Figure 6 and Figure 7 The control assembly 704 includes a driving plate 7041 fixedly mounted on one side of the reciprocating rod 7015 corresponding to the slide groove 7032 and an inclined groove 7042 opened on the driving plate 7041. The inclined groove 7042 is set higher on the left and lower on the right, and the round rod 7035 is slidably connected in the inclined groove 7042.

[0046] When in use, the powder collecting cover 8013 will be pressed against the forming cylinder 9, and the matching frame 7010 will be driven to move downward, thereby driving the circular frame 7018 to move downward, and then the return plate 7013 will be driven to move downward through the circular frame 7018 and stretch the return spring 7012, so that the reciprocating rod 7015 will move synchronously close to the cam 7022. When the powder collecting cover 8013 is completely buckled into the forming cylinder 9, the pulley 7023 enters the toggle range of the cam 7022, and then, The drive motor 7024 is started, and the output shaft of the drive motor 7024 rotates to drive the cam 7022 to rotate at a high speed, so that the cam 7022 moves the pulley 7023, drives the reciprocating rod 7015 to move back and forth, and drives the top punch plate 7019 to move back and forth, and impacts the bottom of the powder collecting cover 8013 to generate vibration. The impact of the top punch plate 7019 can effectively loosen the metal powder attached to the inner wall of the powder collecting cover 8013, and at the same time make the metal powder in the powder collecting cover 8013 more evenly distributed. On the filter screen 8014, local accumulation is avoided and the filtering efficiency is improved. In addition, since the powder collecting cover 8013 is tightly fastened to the forming cylinder 9, the impact of the top punch plate 7019 not only acts on the powder collecting cover 8013, but also is transmitted to the forming cylinder 9 through the contact surface. The transmission effect enhances the cleaning effect on the inner wall of the forming cylinder 9. The high-frequency vibration helps to loosen the metal powder attached to the inner wall of the forming cylinder 9 and the powder collecting cover 8013, improves the cleaning effect and avoids the clogging of the filter screen 8014. At the same time, the reciprocating rod 701 The reciprocating movement will also drive the driving plate 7041 to move synchronously, thereby driving the inclined groove 7042 to squeeze the round rod 7035, driving the round rod 7035 to reciprocate in the sliding groove 7032, and then driving the side punch plate 7034 to reciprocate, impacting and vibrating the side wall of the forming cylinder 9, thereby shaking off the metal powder attached to the inner wall of the forming cylinder 9, further enhancing the cleaning effect of the inner wall of the forming cylinder 9, and at the same time, the vibration is transmitted to the powder collecting cover 8013 through the contact surface, thereby further improving the filtering effect.

[0047] When a single powder cleaning is completed, the driving motor 7024 is stopped first, and then the L-shaped rod 8012 is controlled by an external power supply to rotate 90°, driving the powder collecting cover 8013 to flip 90° and reset. As the powder collecting cover 8013 gradually moves away from the matching frame 7010, the reset spring 7012 is gradually reset, driving the reset plate 7013 to move upward, thereby driving the reciprocating rod 7015 and the circular frame 7018 to move upward, and then driving the pulley 7023 to move up and out of the moving range of the cam 7022 for reset, and finally release the clamping component 602 to fix the molding cylinder 9, open the automatic door 10, and then take the molding cylinder 9 out of the sealed cabin 2.

[0048] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A forming cylinder powder cleaning device for additive printing equipment, characterized in that: include: A frame (1) and a sealed cabin (2) fixedly mounted in the frame (1); a horizontally mounted support platform (3) fixedly mounted in the sealed cabin (2); a support frame (4) fixedly mounted on the top of the support platform (3); a rotating and tilting unit (5) arranged at the front side of the support frame (4); a clamping unit (6) for clamping and fixing a forming cylinder (9) arranged at the front side of the rotating and tilting unit (5); a leak-proof powder cleaning unit (8) and two left-right symmetrical matching vibration units (7) arranged at the top of the clamping unit (6); the matching vibration unit (7) comprising a docking matching component (701), a driving component (702) for driving the docking matching component (701), a side vibration component (703) and a control component (704) for controlling the side vibration component (703); and the leak-proof powder cleaning unit (8) comprising a snap-fit ​​powder cleaning component (801) and an exhaust component (802); The clamping unit (6) comprises a workbench (601), and the powder cleaning assembly (801) comprises a mounting frame (8011) fixedly mounted on the top of the workbench (601), a powder collecting cover (8013) being mounted on the mounting frame (8011) by two L-shaped rods (8012) for joint rotation, the bottom of the powder collecting cover (8013) being open and the size of the opening being consistent with the size of the inner wall of the molding cylinder (9), a filter screen (8014) being fixedly mounted inside the powder collecting cover (8013), a slag guide box (8015) being fixedly mounted on the rear side of the mounting frame (8011), and a square corrugated pipe (8016) being mounted between the slag guide box (8015) and the powder collecting cover (8013); when cleaning powder, the powder collecting cover (8013) is fastened to the top of the molding cylinder (9), and metal powder will not escape during the entire powder cleaning process.

2. The powder cleaning device for forming cylinder of additive printing equipment according to claim 1, characterized in that: The rotary dumping unit (5) comprises a rotating seat (501) rotatably mounted on the front side of the support platform (3); a control motor (502) for controlling the rotating seat (501) to rotate is fixedly mounted on the left side of the support platform (3); a workbench (601) is fixedly mounted on the front side of the rotating seat (501); an opening for guiding metal residues that cannot pass through the filter screen (8014) is provided on the right side of the slag guide box (8015); the bottom inner wall of the slag guide box (8015) is higher on the left and lower on the right, so as to facilitate guiding out the metal residues that fall into the slag guide box (8015).

3. The powder cleaning device for forming cylinder of additive printing equipment according to claim 1, characterized in that: The clamping unit (6) further comprises two clamping components (602) arranged on the workbench (601) and arranged in a bilaterally symmetrical manner, wherein the clamping components (602) are used to clamp and fix the forming cylinder (9) during powder cleaning.

4. The powder cleaning device for forming cylinder of additive printing equipment according to claim 1, characterized in that: The exhaust assembly (802) comprises an exhaust fan (8021) fixedly mounted on the top of the powder collecting cover (8013) and an air outlet pipe (8023) fixedly mounted on the front side of the exhaust fan (8021); an exhaust pipe (8022) is installed between the exhaust fan (8021) and the powder collecting cover (8013).

5. The forming cylinder powder cleaning device for additive printing equipment according to claim 3, characterized in that: The docking assembly (701) comprises a gantry (7011) fixedly mounted on the top of the clamping component (602); two reset springs (7012) are fixedly mounted on the inner wall of the top of the gantry (7011) and are symmetrical in front and back; a reset plate (7013) is commonly mounted at the bottom ends of the two reset springs (7012); two sliding rods (7014) that slide through the gantry (7011) and are symmetrical in front and back are fixedly mounted on the top of the reset plate (7013); a circular frame (7018) is commonly mounted on the tops of the two sliding rods (7014); and two limit rods (7017) that slide through the gantry (7011) and are symmetrical in front and back are commonly mounted between the circular frame (7018) and the reset plate (7013).

6. The powder cleaning device for forming cylinder of additive printing equipment according to claim 5, characterized in that: A reciprocating rod (7015) is fixedly installed at the bottom of the reset plate (7013) via a second reset spring (7016); the top end of the reciprocating rod (7015) slides through the gantry (7011) and the circular frame (7018) and is fixedly installed with a top punch plate (7019); two front-to-back symmetrical matching frames (7010) are fixedly installed on the top of the circular frame (7018); when the powder collecting cover (8013) is turned 90 degrees and snapped onto the top of the forming cylinder (9), it presses down the matching frames (7010) to drive the reciprocating rod (7015) to move downward to match the driving assembly (702).

7. The powder cleaning device for forming cylinder of additive printing equipment according to claim 6, characterized in that: The driving assembly (702) comprises a mounting seat (7021) fixedly mounted on the top of the clamping component (602) and a driving motor (7024) fixedly mounted on the side of the mounting seat (7021) away from the forming cylinder (9); the output end of the driving motor (7024) slides through the mounting seat (7021) and is fixedly mounted with a cam (7022); a pulley (7023) matched with the cam (7022) is fixedly mounted on the bottom end of the reciprocating rod (7015); the reciprocating rod (7015) moves downward to drive the pulley (7023) to match with the cam (7022).

8. The forming cylinder powder cleaning device for additive printing equipment according to claim 6, characterized in that: The side shock assembly (703) comprises L-shaped plates (7031) symmetrically mounted on the front and rear inner walls of the circular frame (7018); a slide groove (7032) is provided on the adjacent side of the two L-shaped plates (7031); a slider (7033) is slidably connected in the slide groove (7032); a round rod (7035) is installed between the two sliders (7033); and two side punch plates (7034) symmetrically mounted front and rear are fixedly mounted on the outer side of the round rod (7035).

9. The forming cylinder powder cleaning device for additive printing equipment according to claim 8, characterized in that: The control assembly (704) comprises a driving plate (7041) fixedly mounted on one side of the reciprocating rod (7015) corresponding to the sliding groove (7032) and an inclined groove (7042) provided on the driving plate (7041). The inclined groove (7042) is arranged to be higher on the left and lower on the right, and the round rod (7035) is slidably connected in the inclined groove (7042).

10. The forming cylinder powder cleaning device for additive printing equipment according to claim 1, characterized in that: An automatic door (10) is fixedly mounted on the front side of the frame (1), the automatic door (10) is closed during the powder cleaning process, and is opened to remove the molding cylinder (9) after the powder cleaning is completed. A drop hopper (11) is fixedly mounted on the bottom of the sealed cabin, and the bottom of the drop hopper (11) passes through the support platform (3).

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