Hot melting type 3D printer printing platform convenient to demould

Abstract

A motor groove is formed in the end, close to a driving rotating rod, of a base, a plurality of air cylinder grooves are further formed in the base, guide grooves are formed in the two sides of the bottom of each air cylinder groove, and air cylinder mounting sliding plates are arranged in the positions, located in the guide grooves, of the air cylinder grooves in a sliding mode; the multiple small air cylinders are arranged on the upper surface of the air cylinder installation sliding plate, the lower surface of the top plate is connected with piston rods of the small air cylinders, the top columns are evenly arranged on the upper surface of the top plate in an array mode, the top columns correspond to the through holes in a one-to-one mode, and the top columns are movably arranged in the corresponding through holes. The upper surface of the ejection column is flush with the upper surface of the supporting plate, flatness of the bottom of a printed object is not affected, meanwhile, movement of the supporting plate is not affected, during demolding, the bottom of the printed object is sequentially separated from the supporting plate and the ejection column through pushing and recycling of the small air cylinder, and therefore demolding of the printed object is facilitated, and compared with manual demolding, the object is not prone to being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and specifically to a hot-melt 3D printer printing platform that is convenient for demoulding. Background Technique

[0002] 3D printing, also known as additive manufacturing technology, is a technology for manufacturing solid parts by the method of layer-by-layer material accumulation based on three-dimensional digital model data. The historical development of 3D printing technology is a process of continuous progress and expansion. From the early rapid prototyping technology to the current wide application, 3D printing technology has been applied in design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, automotive design and manufacturing, as well as medical fields such as aerospace and dentistry.

[0003] The printing platform of a fused 3D printer generally consists of a base main body and a pallet. The pallet can move along the Y-axis and cooperate with the movement of the upper printer head in the X and Z directions to achieve three-axis printing. However, after 3D printing is completed at present, generally, manual direct lateral pressure is applied to the object to demould it, or a spatula is used to demould the object. No matter which method is used, the convenience is not high, and the object is easily damaged. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot-melt 3D printer printing platform that is convenient for demoulding, so as to solve the problems proposed in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A hot-melt 3D printer printing platform that is convenient for demoulding, including a base, a pallet, and a demoulding mechanism;

[0006] Guide rods are symmetrically arranged on both sides of the upper surface of the base. A driving rotating rod and a driven rotating rod are arranged at both ends of the upper surface of the base. Driving and driven toothed belt wheels are arranged at corresponding positions on the driving rotating rod and the driven rotating rod. The driving and driven toothed belt wheels on the driving rotating rod and the driven rotating rod are connected by a linkage toothed belt. The driving rotating rod is also provided with a driven toothed belt wheel. A motor slot is opened at one end of the base close to the driving rotating rod. The base is also provided with a number of cylinder slots. Guide grooves are provided on both sides of the bottom of the cylinder slots. A cylinder installation slide plate is slidably arranged in the cylinder slots and located in the guide grooves. A driving motor is arranged in the motor slot. A driving toothed belt wheel is arranged on the output shaft of the driving motor. The driving toothed belt wheel and the driven toothed belt wheel are connected by a transmission toothed belt;

[0007] Guide blocks are arranged on both sides of the lower surface of the pallet. The guide blocks are in guiding cooperation with the guide rods. The pallet is evenly provided with through holes in an array. The upper part of the linkage toothed belt is connected to the lower surface of the pallet through a connecting member;

[0008] The demolding mechanism includes a small cylinder, a top plate and a top column. There are several small cylinders which are respectively arranged on the upper surface of the cylinder mounting slide plate. The lower surface of the top plate is connected to the piston rods of the respective small cylinders. The top columns are evenly arranged in an array on the upper surface of the top plate. The top columns correspond to the through holes one by one, and the top columns are movably arranged in the corresponding through holes.

[0009] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, both ends of the driving rotating rod and the driven rotating rod are connected to bearing seats, and the bearing seats are connected to the upper surface of the base.

[0010] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, both ends of the guide rod are respectively connected to support seats, and the support seats are connected to the upper surface of the base.

[0011] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, the distance between adjacent two columns of the top columns is greater than the width of the linkage toothed belt, and the linkage toothed belt is threaded between two adjacent columns of the corresponding top columns.

[0012] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, a number of support feet are arranged on the lower surface of the base.

[0013] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, column mounting grooves are symmetrically arranged on both sides of the upper surface of the base.

[0014] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, the upper surface of the top column is a plane.

[0015] Preferably, for a hot-melt 3D printer printing platform facilitating demolding provided by the present invention, one end of the cylinder groove extends to the outside of the base, and an extension groove is arranged at the other end of the cylinder groove. The extension grooves extend to the outside of the base away from the outer ends of the cylinder grooves.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The pallet is evenly provided with through holes in an array. A cylinder mounting slide plate is slidably arranged in the cylinder groove of the base. A number of small cylinders are arranged on the upper surface of the cylinder mounting slide plate. The piston rods of the small cylinders are all connected to the top plate. The top columns are evenly arranged on the upper surface of the top plate in an array. The top columns correspond to the through holes of the pallet one by one and are inserted into each other. When in use, the upper surface of the top column is flush with the upper surface of the pallet, which does not affect the flatness of the bottom of the printed object and also does not affect the movement of the pallet. When demolding, through the pushing and retracting of the small cylinders, the bottom of the printed object is separated from the pallet and the top column successively, so as to facilitate the demolding of the printed object. And compared with manual demolding, the object is not easily damaged. Brief Description of the Drawings

[0018] Figure 1 is a schematic top view structure of the present invention;

[0019] Figure 2 is a schematic front view structure of the present invention (the state where the top of the top column is pushed out);

[0020] Figure 3 is a schematic top view structure of the present invention (the pallet is not shown);

[0021] Figure 4 is a schematic top view structure of the present invention (the pallet and the top plate are not shown);

[0022] Figure 5 is a schematic bottom view structure of the pallet.

[0023] In the figure: base 1, pallet 2, guide rod 3, driving rotating rod 4, driven rotating rod 5, linkage belt pulley 6, linkage belt 7, driven belt pulley 8, motor groove 9, cylinder groove 10, guide groove 11, cylinder mounting slide plate 12, driving motor 13, driving belt pulley 14, transmission belt 15, guide block 16, through hole 17, connecting piece 18, small cylinder 19, top plate 20, top column 21, bearing seat 22, support seat 23, support foot 24, column mounting groove 25, extension groove 26. Detailed Description of the Invention

[0024] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention;

[0025] It should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0026] Please refer to Figures 1-5 , the present invention provides a technical solution: a hot-melt 3D printer printing platform that is easy to demold, including a base 1, a pallet 2, and a demolding mechanism;

[0027] A plurality of support feet 24 are provided on the lower surface of the base 1 to achieve the elevation and support of the base 1. Guide rods 3 are symmetrically arranged on both sides of the upper surface of the base 1. Both ends of the guide rods 3 are respectively connected to the support seats 23, and the support seats 23 are connected to the upper surface of the base 1. The elevation and installation of the guide rods 3 are achieved through the support seats 23. Active rotating rods 4 and driven rotating rods 5 are provided at both ends of the upper surface of the base 1. Both ends of the active rotating rod 4 and the driven rotating rod 5 are connected to the bearing seats 22, and the bearing seats 22 are connected to the upper surface of the base 1. The installation of the active rotating rod 4 and the driven rotating rod 5 is achieved through the bearing seats 22. Linkage belt pulleys 6 are provided at corresponding positions on the active rotating rod 4 and the driven rotating rod 5. The linkage belt pulleys 6 of the active rotating rod 4 and the driven rotating rod 5 are connected by a linkage belt 7. The active rotating rod 4 is also provided with a driven belt pulley 8. A motor slot 9 is opened at one end of the base 1 near the active rotating rod 4. A plurality of cylinder slots 10 are also opened in the base 1. Guide grooves 11 are provided on both sides of the bottom of the cylinder slot 10. A cylinder mounting slide plate 12 is slidably arranged in the cylinder slot 10 and located in the guide groove 11. One end of the cylinder slot 10 extends to the outside of the base 1 to facilitate the insertion of the cylinder mounting slide plate 12 into the cylinder slot 10. The other end of the cylinder slot 10 is provided with an extension slot 26. The extension slots 26 extend to the outside of the base 1 away from the outer ends of the cylinder slot 10. The extension slots 26 are used for the layout of the pipelines of the small cylinders 19. A driving motor 13 is arranged in the motor slot 9. A driving belt pulley 14 is provided on the output shaft of the driving motor 13. The driving belt pulley 14 is connected to the driven belt pulley 8 by a transmission belt 15. Column mounting slots 25 are symmetrically arranged on both sides of the upper surface of the base 1 to achieve the installation of the 3D printer columns;

[0028] Guide blocks 16 are provided on both sides of the lower surface of the pallet 2. The guide blocks 16 are in guiding cooperation with the guide rods 3. Through holes 17 are evenly arranged in an array on the pallet 2. The upper part of the linkage belt 7 is connected to the lower surface of the pallet 2 through a connecting member 18;

[0029] The demoulding mechanism includes a small cylinder 19, a top plate 20 and ejector pins 21. There are several small cylinders 19 which are respectively arranged on the upper surface of the cylinder mounting slide plate 12. The lower surface of the top plate 20 is connected to the piston rods of the respective small cylinders 19. The ejector pins 21 are uniformly arranged in an array on the upper surface of the top plate 20. The ejector pins 21 correspond to the through holes 17 one by one. The ejector pins 21 are movably arranged in the corresponding through holes 17. The upper surface of the ejector pin 21 is a flat surface to ensure that when printing, the upper surface of the ejector pin 21 is flush with the upper surface of the pallet 2, so as to ensure the flatness of the bottom of the printed object. The distance between two adjacent columns of ejector pins 21 is greater than the width of the linkage belt 7. The linkage belt 7 is threaded between two adjacent columns of the corresponding ejector pins 21 to ensure that the ejector pins 21 do not affect the arrangement of the linkage belt 7.

[0030] Installation method and use principle: First, install the small cylinder 19 on the upper surface of the cylinder installation slide 12, then insert the cylinder installation slide 12 into the cylinder groove 10 and slide both sides into the guide groove 11, install the drive motor 13 in the motor groove 9 of the base 1, and then connect the top plate 20 with the piston rods of each small cylinder 19 through screws. The top plate 20 is evenly provided with top columns 21 on the upper surface. Connect one end of the transmission toothed belt 15 to the active toothed belt wheel 14, then put the transmission toothed belt 15 and the linkage toothed belt 7 on the active rotating rod 4 respectively, and put the other end of the linkage toothed belt 7 on the driven rotating rod 5. Connect the upper part of the linkage toothed belt 7 to the lower surface of the pallet 2 through the connecting piece 18 and the screw, and then match the guide blocks 16 at both ends of the lower surface of the pallet 2 with the guide rod 3, then connect the two ends of the active rotating rod 4 and the driven rotating rod 5 to the base 1 through the bearing seat 22, and connect the two ends of the guide rod 3 to the base 1 through the connecting seat. At this time, the top column 21 corresponds to the through hole 17 of the pallet 2 and plugs into each other. At the same time, connect the two ends of the transmission belt wheel with the linkage toothed belt wheel 6, and connect the two ends of the transmission toothed belt 15 with the active toothed belt wheel 14 and the driven toothed belt wheel 8 respectively, and complete the installation of the base 1. When in use, the active rotating rod 4 is driven to rotate through the cooperation of the driving motor 13, the active toothed belt wheel 14, the transmission toothed belt 15 and the driven toothed belt wheel 8, and the active rotating rod 4 drives the linkage toothed belt 7 to rotate, so that the linkage toothed belt 7 drives the pallet 2 to move along the guide rod 3. At this time, through the cooperation of the top column 21 and the pallet 2, the cylinder mounting slide plate 12 slides along the cylinder groove 10. During printing, the upper surface of the top column 21 is made flush with the upper surface of the support plate 2 through the small cylinder 19. When printing is completed, the piston rod of the small cylinder 19 pushes outward, thereby lifting the printed object through the top column 21, so that the bottom of the object is separated from the support plate 2, and then the piston rod of the small cylinder 19 is retracted to separate the object from the upper surface of the top column 21, thereby facilitating the separation of the object. The present invention has a reasonable structure. The support plate 2 is evenly provided with through holes 17 in an array. A cylinder mounting slide plate 12 is slidably arranged in the cylinder groove 10 of the base 1. A plurality of small cylinders 19 are arranged on the upper surface of the cylinder mounting slide plate 12. The piston rods of the small cylinders 19 are all connected to the top plate 20. Top columns 21 are evenly arranged on the upper surface of the top plate 20 in an array. The top columns 21 correspond to the through holes 17 of the support plate 2 one by one and are plugged into each other. When in use, the upper surface of the top column 21 is flush with the upper surface of the support plate 2, which does not affect the flatness of the bottom of the printed object, and also does not affect the movement of the support plate 2. When demolding, the bottom of the printed object is separated from the support plate 2 and the top column 21 in turn by the pushing and recovery of the small cylinder 19, thereby facilitating the demolding of the printed object. In addition, compared with manual demolding, the object is not easily damaged.

[0031] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0032] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A hot-melt 3D printer printing platform that is easy to demould, characterized in that: It comprises a base (1), a support plate (2), and a demoulding mechanism; Guide rods (3) are symmetrically arranged on both sides of the upper surface of the base (1); an active rotating rod (4) and a driven rotating rod (5) are arranged at both ends of the upper surface of the base (1); the active rotating rod (4) and the driven rotating rod (5) are both provided with linkage toothed belt wheels (6) at corresponding positions; the linkage toothed belt wheels (6) of the active rotating rod (4) and the driven rotating rod (5) are connected by linkage toothed belts (7); the active rotating rod (4) is also provided with a driven toothed belt wheel (8); one end of the base (1) close to the active rotating rod (4) A motor slot (9) is provided, and the base (1) is also provided with a plurality of cylinder slots (10). Guide slots (11) are provided on both sides of the bottom of the cylinder slot (10). A cylinder mounting slide plate (12) is slidably provided in the cylinder slot (10) and in the guide slot (11). A driving motor (13) is provided in the motor slot (9). An output shaft of the driving motor (13) is provided with a driving toothed belt wheel (14). The driving toothed belt wheel (14) is connected to a driven toothed belt wheel (8) through a transmission toothed belt (15). Guide blocks (16) are arranged on both sides of the lower surface of the support plate (2), and the guide blocks (16) cooperate with the guide rods (3) for guidance. The support plate (2) is evenly provided with through holes (17) in an array, and the upper part of the linkage toothed belt (7) is connected to the lower surface of the support plate (2) through a connecting piece (18); The demoulding mechanism comprises a small cylinder (19), a top plate (20) and a top column (21). The small cylinders (19) are in plurality and are respectively arranged on the upper surface of a cylinder mounting slide plate (12). The lower surface of the top plate (20) is connected to the piston rod of each small cylinder (19). The top columns (21) are evenly arranged in an array on the upper surface of the top plate (20). The top columns (21) correspond to the through holes (17) one by one, and the top columns (21) are movably arranged in the corresponding through holes (17).

2. A hot-melt 3D printer printing platform that is easy to demould according to claim 1, characterized in that: Both ends of the active rotating rod (4) and the driven rotating rod (5) are connected to the bearing seat (22), and the bearing seat (22) is connected to the upper surface of the base (1).

3. A hot-melt 3D printer printing platform that is easy to demould according to claim 1, characterized in that: Both ends of the guide rod (3) are respectively connected to a support seat (23), and the support seat (23) is connected to the upper surface of the base (1).

4. A hot-melt 3D printer printing platform that is easy to demould according to claim 1, characterized in that: The distance between two adjacent rows of top columns (21) is greater than the width of the linkage toothed belt (7), and the linkage toothed belt (7) is passed between the two adjacent rows of top columns (21).

5. The hot-melt 3D printer printing platform for easy demoulding according to claim 1, characterized in that: A plurality of supporting feet (24) are arranged on the lower surface of the base (1).

6. A hot-melt 3D printer printing platform that is easy to demould according to claim 1, characterized in that: Column mounting grooves (25) are symmetrically arranged on both sides of the upper surface of the base (1).

7. The hot-melt 3D printer printing platform for easy demoulding according to claim 1, characterized in that: The upper surface of the top column (21) is a plane.

8. The hot-melt 3D printer printing platform for easy demoulding according to claim 1, characterized in that: One end of the cylinder groove (10) extends to the outside of the base (1), and the other end of the cylinder groove (10) is provided with an extension groove (26), and the extension groove (26) is away from the outer end of the cylinder groove (10) and extends to the outside of the base (1).

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