Automatic push plate ejection mechanism of 3D printing equipment

Abstract

This utility model discloses an automatic pusher plate ejection mechanism for a 3D printing equipment. The feed plate support platform and ejection plate support platform on the left and right sides of the 3D printing equipment are respectively provided with feed plate slides and ejection plate slides for sliding the forming base plate. The feed plate slides and ejection plate slides can be aligned directly with the exposed forming piston on the 3D printing equipment. A movable pusher plate and a dragging plate are slidably mounted on the feed plate slides and ejection plate slides respectively. A pusher plate driving device and a dragging plate driving device drive the movable pusher plate and dragging plate to slide. The movable pusher plate can push the forming base plate on the feed plate slide forward onto the forming piston of the 3D printing equipment. The working hook on the side wall of the dragging plate can hook onto the hook structure on the side wall of the forming base plate, thereby driving the forming base plate on the forming piston of the 3D printing equipment to slide away from the 3D printing equipment along the ejection plate slide. This utility model realizes automatic feeding and automatic unloading of parts in the 3D printing equipment, improving 3D printing production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of 3D laser printing technology, and in particular to an automatic pusher plate ejection mechanism for 3D printing equipment. Background Technology

[0002] Currently, before powder cleaning and part removal, 3D printing equipment requires the forming cylinder, along with its forming piston, the formed workpiece, and residual powder, to be removed from the outside of the equipment. Then, the forming cylinder descends to expose the residual powder and the formed workpiece, where workers clean the powder before removing the part. After removal, the forming cylinder returns to its original position inside the 3D printing equipment. This method of powder cleaning and part removal significantly impacts 3D printing production efficiency. With the increasing popularity of metal 3D printing, automated production has become a common concern. In particular, how to achieve rapid powder cleaning and part removal without removing the forming cylinder from the equipment is a pressing technical problem. 3D-printed metal parts are often quite heavy, making it impossible for conventional robotic arms to access the equipment for removal, thus posing a significant challenge to automated part removal in current 3D printing systems. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides an automatic push-plate ejection mechanism for 3D printing equipment. This mechanism enables the 3D printing equipment to automatically pick up parts and replace the forming base plate without the forming cylinder needing to be moved horizontally, thus solving the problem of part picking in automated 3D printing production.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic pusher plate ejection mechanism for a 3D printing equipment, including a forming base plate, an infeed support platform, an ejection support platform, a movable pusher plate, a dragging plate, a pusher plate drive device, a dragging drive device, and a control system. The infeed support platform and the ejection support platform are respectively located on the left and right sides of the 3D printing equipment. The infeed support platform and the ejection support platform are respectively provided with infeed slides and ejection slides for the forming base plate to slide. The infeed slides and the ejection slides can be aligned directly with the exposed forming piston on the 3D printing equipment. The movable pusher plate is slidably mounted on the infeed slide, and the dragging plate is slidably mounted on the ejection slide. On the plate slide, the push plate drive device and the drag drive device drive the moving push plate and the drag plate to slide back and forth along the plate inlet slide and the plate outlet slide, respectively. The moving push plate can push the forming base plate on the plate inlet slide forward and finally reach the forming piston of the 3D printing equipment. The forming base plate has a hook structure on the side wall facing the plate outlet support platform. The drag plate has a working hook on the side facing the 3D printing equipment. The working hook can hook the hook structure on the forming base plate and thus drive the forming base plate on the forming piston of the 3D printing equipment to slide away from the 3D printing equipment along the plate outlet slide. The control system controls the push plate drive device, the drag drive device and the 3D printing equipment to start and stop.

[0005] As a further improvement to the utility model, the working hook is hinged to the drag plate and can rotate around a horizontal axis at a set angle. The working hook is located on both sides of the axis, forming a hook body and a linkage arm respectively. The hook body can hook onto the hook structure of the forming base plate, and the weight difference between the weight of the hook body and the weight of the linkage arm ensures that the working hook remains in a hooked state with the hook structure without external force. The hook structure on the forming base plate includes a notch / groove structure on the side wall of the forming base plate facing the plate-mounting platform and a horizontal beam within the notch / groove structure. The hook body of the working hook can pass through the notch / groove... When the structural opening hooks onto the horizontal beam and the working hook slides towards the 3D printing equipment along with the drag plate, the hook body first contacts the horizontal beam through the inclined or arc surface, thereby forcing the working hook to rotate to a position that allows the horizontal beam to enter the hook body. The ejector plate carrier is also equipped with a drag hook separator. When the drag plate pulls the forming base plate towards the outside of the 3D printing equipment to a designated position, the linkage arm of the working hook on the drag plate reaches the working position of the drag hook separator. The drag hook separator forces the linkage arm of the working hook to rotate, thereby causing the hook body of the working hook to disengage from the hook structure on the forming base plate.

[0006] As a further improvement of the utility model, the tow hook separator is fixedly installed on the plate bearing platform. The tow hook separator is provided with an inclined contact surface. The linkage arm can gradually contact the inclined contact surface on the tow hook separator as the tow plate slides and slide along the inclined contact surface.

[0007] As a further improvement of the utility model, the feeding plate support platform is provided with a material receiving device for sensing whether there is a formed base plate in the feeding plate slide and a push plate sensing device for sensing the position of the moving push plate. The discharging plate slide is provided with a part taking sensing device for sensing whether there is a formed base plate in the discharging plate slide and a push-pull sensing device for sensing the position of the push-pull plate. The material receiving device, push plate sensing device, part taking sensing device and push-pull sensing device communicate with the control system to transmit sensing signals.

[0008] As a further improvement of the utility model, a guide positioning column is fixedly installed on the side wall of the movable push plate facing the 3D printing equipment, and a guide positioning hole is provided on the side wall of the forming base plate facing the infeed bearing platform. The guide positioning column on the movable push plate can be inserted into the guide positioning hole on the forming base plate to limit the sliding direction of the forming base plate.

[0009] As a further improvement of the utility model, the movable push plate is also fixedly provided with a push plate positioning block protruding from its surface, and the infeed plate bearing platform is fixedly provided with an infeed plate limiting block. When the movable push plate slides toward the 3D printing equipment to the designated position, the push plate positioning block on the movable push plate stops on the surface of the infeed plate limiting block, thereby causing the movable push plate to stop at the designated position.

[0010] As a further improvement of the utility model, the side wall of the inlet slide is provided with an inlet guide groove, the side wall of the outlet slide is provided with an outlet guide groove, the side wall of the movable push plate is provided with an inlet guide strip that can slide and is inserted into the inlet guide groove, and the side wall of the drag plate is provided with a drag guide strip that can slide and is inserted into the outlet guide groove.

[0011] As a further improvement of the utility model, the push plate driving device includes a push motor reducer and a push gear, and the drag driving device includes a drag motor reducer and a drag gear. The inlet slide is provided with a push rack, and the outlet slide is provided with a drag rack. The push gear meshes with the push rack for transmission, and the drag gear meshes with the drag rack for transmission. The control system controls the start, stop, forward and reverse rotation of the push motor reducer and the drag motor reducer.

[0012] As a further improvement of the utility model, the section of the infeed slide near the 3D printing equipment is equipped with an infeed roller that can rotate around a horizontal axis, and the section of the outlet slide near the 3D printing equipment is equipped with an outlet roller that can rotate around a horizontal axis. A push sprocket is mounted on the infeed support platform that can rotate around a horizontal axis, and a drag sprocket is mounted on the outlet support platform that can rotate around a horizontal axis. Each infeed roller is coaxially fixedly mounted with a push sprocket, and each outlet roller is coaxially fixedly mounted with a drag sprocket. Each push sprocket is fitted with a push chain, and each drag sprocket is fitted with a drag chain. The movable push plate is connected to the push chain through a connector, so that the infeed roller rotates synchronously as the movable push plate moves. The drag plate is connected to the drag chain through a connector, so that the outlet roller rotates synchronously as the drag plate moves. The forming base plate can be placed on the infeed roller and the outlet roller.

[0013] As a further improvement of the utility model, a magnetic suction plate is fixedly embedded on the bottom surface of the forming base plate, and an electromagnet is fixedly embedded in the forming piston of the 3D printing equipment. When the electromagnet is energized, it can magnetically attract the magnetic suction plate on the forming base plate. A powder scraper is also fixedly installed on the bottom side of the forming base plate facing the plate ejection support platform. The powder scraper can scrape off the residual powder on the surface of the forming piston during the process of the forming base plate entering the 3D printing equipment.

[0014] The beneficial technical effects of this utility model are as follows: This utility model installs an infeed support platform and an outfeed support platform on the left and right sides of the 3D printing equipment, respectively, and sets infeed slides and outfeed slides on them. The push plate drive device and the drag drive device drive the moving push plate and drag plate to slide back and forth on the infeed slide and outfeed slide, respectively. The moving push plate pushes the new forming base plate into the forming piston in the 3D printing equipment. The working hook on the drag plate hooks with the hook structure on the side wall of the forming base plate, and pulls the forming base plate and the forming workpiece on it out of the 3D printing equipment together. Thus, the automatic loading and unloading of the 3D printing equipment is realized. This utility model, in conjunction with the automatic powder cleaning mechanism, can realize intelligent and fully automatic processing of the 3D printing equipment, avoid manual operation, greatly improve the production efficiency of the 3D printing equipment, reduce labor costs, and improve the safety of 3D printing production. Attached Figure Description

[0015] Figure 1 This is a first perspective structural diagram of the present invention;

[0016] Figure 2 This is a second perspective structural diagram of the present invention;

[0017] Figure 3 This is a first perspective view of the forming base plate of this utility model;

[0018] Figure 4 This is a second perspective view of the forming base plate of this utility model;

[0019] Figure 5 This is a perspective view of the translational push plate of this utility model;

[0020] Figure 6 This is a perspective view of the drag bar of this utility model;

[0021] Figure 7 This is a perspective view of the unassembled working hook of the drag plate of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example: An automatic pusher plate ejection mechanism for a 3D printing equipment includes a forming base plate 1, an infeed support platform 2, an ejection support platform 3, a movable pusher plate 4, a dragging plate 5, a pusher plate drive device, a dragging plate drive device, and a control system. The infeed support platform 2 and the ejection support platform 3 are respectively located on the left and right sides of the 3D printing equipment 7. The infeed support platform 2 and the ejection support platform 3 are respectively provided with an infeed slide 8 and an ejection slide 9 for the forming base plate 1 to slide. The infeed slide 8 and the ejection slide 9 can be aligned directly opposite the forming piston 10 exposed on the 3D printing equipment 7. The movable pusher plate 4 is slidably mounted on the infeed slide 8, and the dragging plate 5 is slidably mounted on the ejection slide 9. The pusher plate drive device... The moving push plate 4 and the dragging drive device drive the moving push plate 4 and the dragging plate 5 to slide back and forth along the inlet slide 8 and the outlet slide 9, respectively. The moving push plate 4 can slide forward against the forming base plate 1 on the inlet slide 8 and finally reach the forming piston 10 of the 3D printing equipment 7. The forming base plate 1 has a hook structure on the side wall facing the outlet support platform 3. The dragging plate 5 has a working hook 6 on the side facing the 3D printing equipment 7. The working hook 6 can hook the hook structure on the forming base plate 1 and thus drive the forming base plate 1 on the forming piston 10 of the 3D printing equipment 7 to slide away from the 3D printing equipment 7 along the outlet slide 9. The control system controls the push plate drive device, the dragging drive device and the 3D printing equipment 7 to start and stop.

[0024] Before 3D printing, the 3D printing equipment 7 is turned on, and the forming cylinder is lowered to be flush with the forming piston 10, thus exposing the forming piston 10. A forming base plate 1 is placed in the infeed slide 8 of the infeed support platform 2. The pusher drive device is activated, and the moving pusher 4 moves towards the 3D printing equipment 7, pushing the forming base plate 1 forward until it is pushed into the 3D printing equipment 7 and onto the forming piston 10. The forming cylinder and forming piston 10 of the 3D printing equipment 7 then move upward to a position aligned with the forming chamber bottom plate. The 3D printing equipment 7 is then turned off, and 3D printing begins. After 3D printing is completed, powder cleaning is performed depending on the type of part. This type of 3D printing equipment 7 typically has a powder cleaning shell sealed around the forming cylinder. Before powder cleaning, the forming cylinder is lowered to be aligned with the forming piston 10. Then, a vacuum cleaner connected to the powder cleaning shell uses strong suction to clean the residual powder inside the shell. After cleaning, the powder cleaning shell is opened, allowing the forming cylinder to be cleaned. The piston 10, its forming base plate 1, and the formed workpiece are exposed. The drag drive device is activated, and the drag plate 5 moves toward the 3D printing equipment 7. When it reaches its position, the working hook 6 on the drag plate 5 hooks onto the hook structure on the forming base plate 1. Then, the drag drive device drives the drag plate 5 to move in the opposite direction, dragging the forming base plate 1 and the formed workpiece out of the 3D printing equipment 7. Finally, other handling equipment removes and separates the forming base plate 1 and the formed workpiece from the ejection slide 9 on the ejection support platform 3. The above mechanism can automatically and accurately place the forming base plate 1 on the 3D printing equipment 7, and can also automatically drag the printed workpiece and the forming base plate 1 used to support the workpiece out of the 3D printing equipment 7. This mechanism, together with the automatic powder cleaning mechanism of the 3D printing equipment 7, can realize fully automatic production of the 3D printing equipment 7, avoid manual operation, effectively improve the production efficiency of 3D printing, reduce the labor cost of 3D printing, and improve the safety of 3D printing production.

[0025] The working hook 6 is hinged to the drag plate 5 and can rotate around a horizontal axis at a set angle. The working hook 6 is located on both sides of the axis, forming a hook body 61 and a linkage arm 62 respectively. The hook body 61 can hook onto the hook structure of the forming base plate 1, and the weight difference between the weight of the hook body 61 and the weight of the linkage arm 62 ensures that the working hook 6 remains in a hooked state with the hook structure without external force. The hook structure on the forming base plate 1 includes a notch structure 12 on the side wall of the forming base plate 1 facing the plate bearing platform 3 and a horizontal beam 13 within the notch structure 12. The hook body 61 of the working hook 6 can hook onto the horizontal beam through the opening of the notch structure 12. 13. When the working hook 6 slides towards the 3D printing equipment 7 along with the drag plate 5, the hook body 61 first contacts the horizontal beam 13 through the inclined surface or arc surface, thereby forcing the working hook 6 to rotate to a position that allows the horizontal beam 13 to enter the hook body 61. The plate bearing platform 3 is also equipped with a drag hook separator 11. When the drag plate 5 pulls the forming base plate 1 towards the outside of the 3D printing equipment 7 to a designated position, the linkage arm 62 of the working hook 6 on the drag plate 5 reaches the working position of the drag hook separator 11. The drag hook separator 11 forces the linkage arm 62 of the working hook 6 to rotate, thereby causing the hook body 61 of the working hook 6 to disengage from the hook structure on the forming base plate 1.

[0026] The drag plate 5 has a rectangular groove at its left end, within which a working hook 6 is installed. The hook body 61 of the working hook 6 is at its lowest position due to its own weight. When the drag plate 5 moves toward the 3D printing equipment 7, the working hook 6 contacts the horizontal beam 13 of the notch structure 12 at the right end of the forming base plate 1 through an inclined surface or an arc surface. The inclined surface or arc surface can be located on the horizontal beam 13 or on the hook body 61. The inclined surface or arc surface generates an upward component force on the hook body 61. During the contact process, as the drag plate 5 continues to move forward, it lifts the hook body 61 of the working hook 6. After continuing to move to the left until it passes the horizontal beam 13, the hook body 61 of the working hook 6 falls down due to its own weight and catches the horizontal beam 13. As the drag plate 5 moves to the right and hooks, the working hook 6 remains in the hooked state under its own weight. The push plate begins to move in the opposite direction, and the forming base plate 1 and the forming workpiece on it are dragged away from the 3D printing equipment 7 by the push plate. After sliding to the designated position on the exit slide 9, the linkage arm 62 of the working hook 6 enters the working position of the drag hook separator 11. The drag hook separator 11 causes the linkage arm 62 of the working hook 6 to rotate, which in turn drives the hook body 61 to rotate. The hook body 61 separates from the horizontal beam 13 on the forming base plate 1. At this time, the drag plate 5 separates from the forming base plate 1. As the drag plate 5 continues to move, it moves away from the forming base plate 1 by a certain distance. The forming base plate 1 and the forming workpiece on it are placed in the designated position on the exit slide 9, waiting for the handling equipment to transport them away. With the above structure, the working hook 6 can automatically hook the forming base plate 1 and maintain a stable hooked state without inputting any power to the working hook 6. At the same time, it can automatically disengage after the forming base plate 1 is dragged out of the 3D printing equipment 7. This invention facilitates automated part removal from the 3D printing equipment 7, simplifies the structure, and saves energy. Furthermore, based on this structure, the hooking and unhooking mechanism, driven by a cylinder, motor, or other power device, is also within the scope of this application. In addition to the hook body 61 structure hinged to the drag plate 5, the hook 6 can also be an elastically telescopic pin. A pin hole can be provided on the inner wall of the notch groove structure 12 of the corresponding hooking structure. This type of equivalent replacement structure is easily conceived by those skilled in the art based on this patent and is within the scope of this patent.

[0027] The tow hook separator 11 is fixedly installed on the plate bearing platform 3. The tow hook separator 11 is provided with an inclined contact surface. The linkage arm 62 gradually contacts the inclined contact surface on the tow hook separator 11 as the tow plate slides and slides along the inclined contact surface. After the push plate moves in the opposite direction to the position where it needs to be unhooked, the linkage arm 62 of the working hook 6 begins to contact the inclined contact surface on the tow hook separator 11. As the tow plate 5 continues to move in the opposite direction, the linkage arm 62 of the working hook 6 slides along the inclined contact surface on the tow hook separator 11, thereby causing the linkage arm 62 to be pressed and flipped to unhook. This structure is simple and the unhooking action is stable. In addition, those skilled in the art, after seeing the above structure, can also conceive of using a magnetic attraction method to hold the linkage arm 62 and make it flip, which also falls within the protection scope of this application.

[0028] The feeding platform 2 is equipped with a material receiving sensor for sensing whether a formed base plate 1 is present in the feeding slide 8, and a push plate sensor for sensing the position of the moving push plate 4. The ejection slide 9 is equipped with a part removal sensor for sensing whether a formed base plate 1 is present in the ejection slide 9, and a push-pull sensor for sensing the position of the push-pull plate. The material receiving sensor, push plate sensor, part removal sensor, and push-pull sensor communicate with the control system to transmit sensing signals. By setting up each sensing device, the control system can intelligently control the push plate drive device and the drag drive device, which is beneficial to realize the intelligent automatic loading and unloading of parts in the 3D printing equipment 7, thereby realizing the intelligent control production of the 3D printing equipment 7 and avoiding misoperation.

[0029] A guide positioning post 14 is fixedly installed on the side wall of the movable push plate 4 facing the 3D printing equipment 7. A guide positioning hole 15 is provided on the side wall of the forming base plate 1 facing the infeed bearing platform 2. The guide positioning post 14 on the movable push plate 4 can be inserted into the guide positioning hole 15 on the forming base plate 1 to limit the sliding direction of the forming base plate 1. The movable push plate 4 limits the forming base plate 1 by inserting the guide positioning post 14 into the guide positioning hole 15 on the forming base plate 1. The guide positioning post 14 is preferably two posts spaced apart. When the movable push plate 4 moves, the two guide positioning posts 14 limit the forming base plate 1 in the X direction. The side wall of the movable push plate 4 facing the 3D printing equipment 7 limits the forming base plate 1 in the Y direction. This can accurately achieve the positioning accuracy of the working base plate in the X and Y axis directions, ensuring that the forming base plate 1 is accurately placed on the forming piston 10.

[0030] The movable push plate 4 is also fixedly provided with a push plate positioning block 16 protruding from its surface, and the infeed plate bearing platform 2 is fixedly provided with an infeed plate limiting block 17. When the movable push plate 4 slides toward the 3D printing equipment 7 to the designated position, the push plate positioning block 16 on the movable push plate 4 stops on the surface of the infeed plate limiting block 17, thereby stopping the movable push plate 4 at the designated position. After the movable push plate 4 moves to the position, the push plate positioning block 16 on it is blocked by the infeed plate limiting block 17, preventing it from continuing to move toward the 3D printing equipment 7, thereby limiting the push position of the forming base plate 1 and ensuring perfect alignment between the forming base plate 1 and the forming piston 10.

[0031] The infeed slide 8 has an infeed guide groove 18 on its side wall, and the outlet slide 9 has an outlet guide groove 19 on its side wall. The movable push plate 4 has an infeed guide strip 20 that can slide and is inserted into the infeed guide groove 18 on its side wall, and the drag plate 5 has a drag guide strip (21) that can slide and is inserted into the outlet guide groove 19 on its side wall. The above structure realizes the sliding guidance of the translation push plate and the drag plate in the infeed slide 8 and the outlet slide 9, ensuring their motion accuracy, thereby ensuring that the forming base plate 1 and the forming piston 10 are automatically aligned, which is conducive to the accurate feeding and smooth pulling out of the forming base plate 1.

[0032] The pusher drive device includes a push motor reducer 22 and a push gear 23, and the drag drive device includes a drag motor reducer 24 and a drag gear 25. A push rack 26 is provided on the inlet slide 8, and a drag rack 27 is provided on the outlet slide 9. The push gear 23 meshes with the push rack 26 for transmission, and the drag gear 25 meshes with the drag rack 27 for transmission. The control system controls the start, stop, and forward / reverse rotation of the push motor reducer 22 and the drag motor reducer 24. The translational pusher and dragging slide are driven by the motor reducer and the gear and rack mechanism. Through gear and rack meshing, the transmission accuracy is high, the overall strength is high, it is conducive to automatic control, and it can reduce the floor space and size.

[0033] The section of the feed slide 8 near the 3D printing equipment 7 is equipped with a feed roller 28 that can rotate around a horizontal axis. The section of the discharge slide 9 near the 3D printing equipment 7 is equipped with a discharge roller 29 that can rotate around a horizontal axis. A push sprocket 30 is mounted on the feed support platform 2 that can rotate around a horizontal axis. A drag sprocket 31 is mounted on the discharge support platform 3 that can rotate around a horizontal axis. Each feed roller 28 is coaxially fixed with a push sprocket 30, and each discharge roller 29 is coaxially fixed with a... The device is equipped with a drag sprocket 31, and each push sprocket 30 is fitted with a push chain 32. Each drag sprocket 31 is fitted with a drag chain 33. The movable push plate 4 is connected to the push chain 32 through a connector 35, so that the infeed roller 28 rotates synchronously with the movable push plate 4. The drag plate 5 is connected to the drag chain 33 through a connector 35, so that the outlet roller 29 rotates synchronously with the drag plate 5. The forming base plate 1 can be placed on the infeed roller 28 and the outlet roller 29.

[0034] When the sliding and dragging plates move, the infeed roller 28 and the outfeed roller 29 are rotated through the sprocket and chain mechanism, thereby realizing the rolling friction of the forming base plate 1 in the infeed slide 8 and the outfeed slide 9, reducing the friction force, ensuring that the forming base plate 1 can easily and smoothly enter and exit the plate, and saving energy.

[0035] A magnetic suction plate is fixedly embedded on the bottom surface of the forming base plate 1, and an electromagnet is fixedly embedded in the forming piston 10 of the 3D printing equipment 7. When the electromagnet is energized, it can magnetically attract the magnetic suction plate on the forming base plate 1. A powder scraper 34 is also fixedly installed on the bottom side of the forming base plate 1 facing the plate ejection support 3. The powder scraper 34 can scrape off the residual powder on the surface of the forming piston 10 during the process of the forming base plate 1 entering the 3D printing equipment 7. Due to the interaction between the magnets in the forming base plate 1 and the forming piston 10, in order to ensure a reliable connection between the forming base plate 1 and the forming piston 10, a recess is made at the bottom of the forming base plate 1, which is inlaid with a ferromagnetic steel plate such as electrical soft iron. After connection, it can achieve a control accuracy of 0.002mm with the up and down movement of the working piston, completing the entire process of metal 3D printing. In order to ensure that the forming base plate 1 and the forming piston 10 are reliably connected under the action of a strong magnet, a silicone rubber strip is provided at the right end of the forming base plate 1 for special powder scraping, so that no residual powder will remain on the surface of the forming piston 10 during the movement.

Claims

1. An automatic pusher plate ejection mechanism for a 3D printing device, characterized in that: The system includes a forming base plate (1), an infeed support platform (2), an outfeed support platform (3), a movable push plate (4), a drag plate (5), a push plate drive device, a drag drive device, and a control system. The infeed support platform and the outfeed support platform are respectively located on the left and right sides of the 3D printing equipment (7). The infeed support platform and the outfeed support platform are respectively provided with infeed slides (8) and outfeed slides (9) for the forming base plate to slide. The infeed slides and the outfeed slides can be aligned directly with the forming piston (10) exposed on the 3D printing equipment. The movable push plate is slidably mounted on the infeed slide, and the drag plate is slidably mounted on the outfeed slide. The push plate drive device and the drag drive device are all connected to the forming base plate. The moving device and the drag driving device drive the moving push plate and the drag plate to slide back and forth along the inlet slide and the outlet slide, respectively. The moving push plate can slide forward against the forming base plate on the inlet slide and finally reach the forming piston of the 3D printing equipment. The forming base plate has a hook structure on the side wall facing the outlet support platform. The drag plate has a working hook (6) on the side facing the 3D printing equipment. The working hook can hook the hook structure on the forming base plate and thus drive the forming base plate on the forming piston of the 3D printing equipment to slide away from the 3D printing equipment along the outlet slide. The control system controls the push plate driving device, the drag driving device and the 3D printing equipment to start and stop.

2. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: The working hook is hinged to the drag plate and can rotate around a horizontal axis at a set angle. The working hook is located on both sides of the axis, forming a hook body (61) and a linkage arm (62). The hook body can hook onto the hook structure of the forming base plate, and the weight difference between the weight of the hook body and the weight of the linkage arm ensures that the working hook remains in the hooked state without external force. The hook structure on the forming base plate includes a notch / groove structure (12) on the side wall of the forming base plate facing the plate bearing platform and a horizontal beam (13) within the notch / groove structure. The hook body of the working hook can be connected through the notch / groove. When the hook of the working hook is hooked onto the horizontal beam and the working hook slides toward the 3D printing equipment along with the drag plate, the hook body first contacts the horizontal beam through the inclined or arc surface, thereby forcing the working hook to rotate to a position that allows the horizontal beam to enter the hook body. The plate bearing platform is also equipped with a drag hook separator (11). When the drag plate pulls the forming base plate toward the outside of the 3D printing equipment to a designated position, the linkage arm of the working hook on the drag plate reaches the working position of the drag hook separator. The drag hook separator forces the linkage arm of the working hook to rotate, thereby causing the hook body of the working hook to disengage from the hook structure on the forming base plate.

3. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 2, characterized in that: The tow hook separator is fixedly installed on the plate bearing platform. The tow hook separator is provided with an inclined contact surface. As the tow plate slides, the linkage arm can gradually contact the inclined contact surface on the tow hook separator and slide along the inclined contact surface.

4. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: The feeding platform is equipped with a material receiving sensor for sensing whether there is a formed base plate in the feeding slide and a push plate sensing device for sensing the position of the moving push plate. The discharge slide is equipped with a part removal sensor for sensing whether there is a formed base plate in the discharge slide and a push-pull sensing device for sensing the position of the push-pull plate. The material receiving sensor, push plate sensing device, part removal sensor, and push-pull sensing device communicate with the control system to transmit sensing signals.

5. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: A guide positioning column (14) is fixedly installed on the side wall of the movable push plate facing the 3D printing equipment. A guide positioning hole (15) is provided on the side wall of the forming base plate facing the infeed bearing platform. The guide positioning column on the movable push plate can be inserted into the guide positioning hole on the forming base plate to limit the sliding direction of the forming base plate.

6. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1 or 5, characterized in that: The movable push plate is also fixedly provided with a push plate positioning block (16) protruding from its surface, and the infeed plate bearing platform is fixedly provided with an infeed plate limiting block (17). When the movable push plate slides toward the 3D printing equipment to the designated position, the push plate positioning block on the movable push plate stops on the surface of the infeed plate limiting block, thereby causing the movable push plate to stop at the designated position.

7. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: The side wall of the inlet slide is provided with an inlet guide groove (18), the side wall of the outlet slide is provided with an outlet guide groove (19), the side wall of the movable push plate is provided with an inlet guide strip (20) that can slide and is inserted into the inlet guide groove, and the side wall of the drag plate is provided with a drag guide strip (21) that can slide and is inserted into the outlet guide groove.

8. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: The push plate drive device includes a push motor reducer (22) and a push gear (23), and the drag drive device includes a drag motor reducer (24) and a drag gear (25). The inlet slide is provided with a push rack (26), and the outlet slide is provided with a drag rack (27). The push gear meshes with the push rack for transmission, and the drag gear meshes with the drag rack for transmission. The control system controls the start, stop, forward and reverse rotation of the push motor reducer and the drag motor reducer.

9. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: The section of the feed slide near the 3D printing equipment is equipped with a feed roller (28) that can rotate around a horizontal axis, and the section of the discharge slide near the 3D printing equipment is equipped with a discharge roller (29) that can rotate around a horizontal axis. The feed support platform is equipped with a push sprocket (30) that can rotate around a horizontal axis, and the discharge support platform is equipped with a drag sprocket (31) that can rotate around a horizontal axis. Each feed roller is coaxially fixedly mounted with a push sprocket, and each discharge roller is coaxially fixedly mounted with a drag sprocket. Each push sprocket is fitted with a push chain (32), and each drag sprocket is fitted with a drag chain (33). The movable push plate is connected to the push chain through a connector (35) so that the feed roller rotates synchronously with the movable push plate. The drag plate is connected to the drag chain through a connector so that the discharge roller rotates synchronously with the drag plate. The forming base plate can be placed on the feed roller and the discharge roller.

10. The automatic pusher plate ejection mechanism of the 3D printing equipment as described in claim 1, characterized in that: A magnetic suction plate is fixedly embedded on the bottom surface of the forming base plate, and an electromagnet is fixedly embedded in the forming piston of the 3D printing equipment. When the electromagnet is energized, it can magnetically attract the magnetic suction plate on the forming base plate. A powder scraper (34) is also fixedly installed on the bottom of the forming base plate facing the plate-out support platform. The powder scraper can scrape off the residual powder on the surface of the forming piston during the process of the forming base plate entering the 3D printing equipment.

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