Inverted portable 3D printer with self-service pick-up function

Abstract

The utility model provides a self-service piece taking inverted portable 3D printer which comprises a base, a printing head mechanism, an automatic material taking mechanism, a Z-axis movement mechanism, a material extruding mechanism and a printing platform, the printing head mechanism, the automatic material taking mechanism, the Z-axis movement mechanism, the material extruding mechanism and the printing platform are arranged on the base, and the printing head mechanism comprises a mounting frame arranged on the base through a plane movement mechanism and a nozzle arranged on the mounting frame. A wire outlet of the extruding mechanism is connected with an inlet of the wire feeding structure through a hose; the printing platform is arranged on the base through the Z-axis movement mechanism, the automatic piece taking mechanism comprises a material groove and a scraper knife, and a linkage structure is arranged between the material groove and the printing head mechanism. The whole 3D printer adopts an inverted structural design, and the printing head mechanism is arranged at the bottom of equipment and is positioned below the printing platform, so that the gravity center of the 3D printer is lowered, and the stability in the printing process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and particularly relates to a self-service pick-up inverted portable 3D printer. Background Art

[0002] At present, 3D printing technology has been widely used in various industries, promoting the diversification and personalization of user needs. Traditional 3D printers usually adopt a metal frame structure to ensure the stable movement of the print head during the printing process. However, this design makes traditional printers often large in size and heavy in weight, restricting their application in mobile and space-constrained environments. In addition, the traditional bottom-up stacking printing method makes it inconvenient to operate when printing overhanging structures or models at specific angles, and the high center of gravity of the device may lead to instability.

[0003] Although the current self-service model pick-up function already exists, the main problems are complex operation and lack of automation features, which make it difficult to meet the user's requirements for convenient operation and efficient production. Traditional self-service model pick-up devices require users to go through complex setting and operation processes, and there are also deficiencies in the degree of automation. Therefore, the market demand for a new type of automatic pick-up device with simple operation, high automation, and the ability to quickly respond to user needs is increasing rapidly. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a self-service pick-up inverted portable 3D printer to lower the center of gravity of the 3D printer, improve the stability of the 3D printer, and solve the problem of inconvenient operation when printing overhanging structures or models at specific angles with traditional 3D printers.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A self-service pick-up inverted portable 3D printer, comprising:

[0007] A base;

[0008] A print head mechanism, including a mounting frame arranged on the base through a planar motion mechanism, and a wire feeding structure arranged on the mounting frame. A nozzle is provided at the outlet of the wire feeding structure, and the outlet of the nozzle faces upward;

[0009] An extrusion mechanism, arranged on the base, and its wire outlet is connected to the inlet of the wire feeding structure through a hose;

[0010] A printing platform, arranged on the base through a Z-axis motion mechanism, and the printing platform is located directly above the nozzle;

[0011] The automatic picking mechanism is arranged on one side of the print head mechanism and includes a chute with an upward opening that moves along the X-axis or Y-axis movement direction of the print head mechanism, and a scraper connected by a fastener above the chute. A linkage structure is provided between the chute and the print head mechanism.

[0012] Further, the planar motion mechanism is an X-axis and Y-axis cross slide motion structure.

[0013] Further, the planar motion mechanism is a CoreXY motion structure.

[0014] Further, the linkage structure includes a chute hook arranged at one end of the bottom surface of the chute close to the print head mechanism, and a print head hook arranged on the mounting frame corresponding to the chute hook. Both the chute hook and the print head hook are U-shaped block structures. The opening of the chute hook faces downward and the center line of the opening is perpendicular to the moving direction of the chute. The opening of the print head hook is vertical and faces left or right relative to the moving direction of the chute.

[0015] After printing is completed, the chute hook and the print head hook are hooked and linked.

[0016] Further, the base is provided with a guide rail, the chute is installed on a guide rail slider matching the guide rail, a chute magnet is arranged at one end of the bottom surface of the chute far from the print head mechanism, and a guide rail magnet is arranged at one end of the guide rail far from the print head mechanism. The chute magnet and the guide rail magnet attract each other to fix the position of the chute.

[0017] Further, a nozzle cooling fan is provided on the mounting frame, and the air outlet of the nozzle cooling fan faces the nozzle to blow air for heat dissipation.

[0018] Further, a heating rod and a temperature sensor corresponding to the wire feeding structure are arranged inside the mounting frame.

[0019] Further, the Z-axis motion mechanism is a lead screw slide structure, and the printing platform is connected to the Z-axis motion mechanism through a V-shaped bracket.

[0020] The inner end of the V-shaped bracket is installed on the lead screw connecting piece of the Z-axis motion mechanism by screws. On the left and right sides of the outer end of the bottom surface of the V-shaped bracket, a first plug-in piece is respectively arranged. The two first plug-in pieces are provided with opposite slots. A second plug-in piece is relatively fixedly arranged at the inner end of the bottom surface of the V-shaped bracket. The second plug-in piece is provided with a positioning groove facing outward. The printing platform is supported by the slots of the two first plug-in pieces and the positioning groove of the second plug-in piece. At the same time, the inner end of the printing platform abuts against and is positioned at the bottom of the positioning groove.

[0021] Further, the V-shaped bracket includes a fixing frame and two sliding rods. The inner end of the fixing frame is connected by screws and a screw rod connecting piece. Two sliding channels are opened in the fixing frame. The two sliding channels are arranged in a V-shaped structure with the openings facing outward. Each of the two sliding rods is slidably installed in one sliding channel, and the outer end of the sliding rod extends out of the sliding channel. A set screw is respectively arranged at the outer end positions of the two sliding channels to fix the sliding rods;

[0022] Each of the two first plug connectors is arranged on one sliding rod.

[0023] Compared with the prior art, the self-service pick-up inverted portable 3D printer of the present invention has the following advantages:

[0024] (1) The 3D printer of the present invention adopts an inverted structure design as a whole. The print head mechanism is arranged at the bottom of the device and below the printing platform, reducing the center of gravity of the 3D printer and improving the stability during the printing process.

[0025] (2) The planar motion structure of the present invention adopts a CoreXY structure design, optimizing the motion path, improving the stability of the movement of the print head mechanism, and significantly improving the printing speed and printing accuracy.

[0026] (3) By introducing a linkage structure, the present invention enables the material tank to link with the print head mechanism after printing is completed, realizing the self-service pick-up function while simplifying the complexity of the self-service pick-up structure, enhancing the portability of the overall movement and the simplicity of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0028] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0029] Figure 2 is a schematic diagram of the print head mechanism of the present invention;

[0030] Figure 3 is a schematic structural diagram of the planar motion structure of the present invention;

[0031] Figure 4 is a schematic structural diagram of the Z-axis motion mechanism of the present invention;

[0032] Figure 5 is a schematic structural diagram of the automatic pick-up mechanism of the present invention;

[0033] Figure 6 is a schematic diagram of the print head hook of the present invention;

[0034] Figure 7 This is a side view of the V-shaped bracket supporting the printing platform in the present utility model.

[0035] Explanation of reference numerals in the drawings:

[0036] 1 - Print head mechanism; 2 - Planar motion mechanism; 3 - Z-axis motion mechanism; 4 - Automatic pick-up mechanism; 5 - Screen; 6 - Extrusion mechanism; 7 - Printing platform; 11 - Nozzle; 9 - Base; 12 - Heating rod; 13 - Temperature sensor; 14 - Mounting bracket; 15 - Base cooling fan; 18 - Nozzle cooling fan; 20 - X-axis slide rail slider; 21 - Synchronous belt pulley; 22 - X-axis stepper motor; 23 - Y-axis stepper motor; 24 - Y-axis slide rail; 25 - X-axis slide rail; 26 - Winding pulley; 28 - Slide block connecting piece; 29 - Synchronous belt; 32 - Z-axis stepper motor; 36 - Lead screw; 37 - Lead screw connecting piece; 38 - Z-axis slide rail; 40 - Fastener; 41 - Scraper; 42 - Feeding trough hook; 43 - Guide rail; 44 - Guide rail slider; 45 - Feeding trough magnet; 47 - Guide rail magnet; 48 - Feeding trough; 49 - Print head hook; 71 - V-shaped bracket; 72 - Screw; 73 - First connector; 74 - Second connector; 711 - Fixed bracket; 712 - Slide rod; 713 - Set screw; 141 - Card slot. Detailed implementation manners

[0037] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0038] As Figure 1As shown in the figure, a self-service pick-up inverted portable 3D printer includes a base 9. On the base 9, there are a print head mechanism 1, an automatic material feeding mechanism 4, a Z-axis movement mechanism 3, a material extrusion mechanism 6, and a printing platform 7. The print head mechanism 1 includes a mounting frame 14. The mounting frame 14 is arranged on the base 9 through a planar movement mechanism 2. Under the action of the planar movement mechanism 2, the mounting frame 14 moves in the horizontal X-axis and Y-axis directions, thereby realizing its movement within the horizontal plane. An incoming wire structure is arranged inside the mounting frame 14. The outlet of the incoming wire structure is provided with a nozzle 11, and the outlet of the nozzle 11 faces upward. The inlet of the incoming wire structure is connected to the wire outlet of the material extrusion mechanism 6 through a hose, such as a nylon tube, a hose with a certain strength. The material extrusion mechanism 6 conveys the material wire to the incoming wire structure through the hose, and then the wire exits from the nozzle 11 for 3D printing. The printing information is displayed on the screen 5 arranged on the base 9. The printing platform 7 is located above the nozzle 11. The printing platform 7 is arranged on the base 9 through the Z-axis movement mechanism 3, enabling the printing platform 7 to move up and down. The nozzle 11 extrudes wire onto the bottom surface of the printing platform 7 to print the product model. The automatic pick-up mechanism 4 includes a material trough 48 that moves along the X-axis movement direction or Y-axis movement direction of the mounting frame 14 and has an upward opening. Above the material trough 48, a scraper 41 is connected through a fastener 40. A linkage structure is arranged between the material trough 48 and the print head mechanism 1. After 3D printing is completed, the material trough 48 and the mounting frame 14 of the print head mechanism 1 are temporarily connected through the linkage structure. The material trough 48 moves linearly with the print head mechanism 1. During the movement of the scraper 41, the 3D product model on the printing platform 7 is scraped off, and the model falls into the material trough 48 for storage, realizing automatic pick-up of the 3D product model.

[0039] In the present utility model, the structure of the print head mechanism 1 is as Figure 2 shown. A nozzle cooling fan 18 is arranged on the mounting frame 14. If the fan adopts a blower mechanism, the air outlet of the nozzle cooling fan 18 faces the nozzle 11 to blow air for heat dissipation. At the same time, a heating rod 12 and a temperature sensor 13 are arranged inside the mounting frame 14 corresponding to the incoming wire structure. The heating rod 12 is an electric heating rod and is electrically connected to the controller of the 3D printer. The power on and off of the power supply are controlled through this controller. Both the temperature sensor 13 and the nozzle cooling fan 18 are electrically connected to this controller. The temperature sensor 13 monitors the temperature of the material wire in the incoming wire structure and transmits the signal to the controller. The controller controls the power on and off of the heating rod 12. When the temperature of the material wire is lower than the set temperature, the power supply of the heating rod 12 is turned on to heat the material wire entering the incoming wire structure, so that the material wire reaches the set wire outlet temperature and then enters the nozzle 11 for spraying, realizing 3D printing.

[0040] Preferably, a base cooling fan 15 is further arranged on the mounting frame 14, and its air outlet faces the base 9 to blow air for heat dissipation of the base 9.

[0041] In the present utility model, the planar motion mechanism 2 is a cross-slide motion structure of the X-axis and Y-axis, or it can also be a CoreXY motion structure. The CoreXY motion structure is a common motion structure in current 3D printing devices, and its advantages are to improve the moving accuracy and stability of the printer nozzle. Its structure and principle will not be described in detail. Briefly described as follows, as Figure 3 shown, it includes an X-axis stepper motor 22, a Y-axis stepper motor 23, a Y-axis slide rail 24, and an X-axis slide rail 25. Among them, the X-axis stepper motor 22, the Y-axis stepper motor 23, and the Y-axis slide rail 24 are all fixed on the base 9. The X-axis slide rail 25 is slidably connected to the Y-axis slide rail 24 through a slider connecting member 28. The print head mechanism 1 is fixed on the X-axis slide rail slider 20. The base 9 is also provided with a winding pulley 26. The synchronous belt 29 of the planar motion mechanism 2 connects the synchronous belt pulley 21 of the X-axis stepper motor 22, the synchronous belt pulley 21 of the Y-axis stepper motor 23, and the card slot 141 of the mounting bracket 14 in the print head mechanism 1. The planar motion mechanism 2 adopts the structural design of CoreXY to realize the precise and rapid position movement of the print head mechanism 1 on the X and Y-axis slide rails.

[0042] In the present utility model, the structure of the Z-axis motion mechanism 3 is as Figure 4 shown, including a Z-axis slide rail 38 provided on the base 9, and a lead screw 36 provided corresponding to the Z-axis slide rail 38. The power source of the lead screw 36 is a Z-axis stepper motor 32 and is driven through a corresponding synchronous belt. The synchronous belt of the Z-axis motion mechanism 3 and the synchronous belt 29 of the planar motion mechanism 2 are each independently arranged. The lead screw connecting member 37 matched with the lead screw 36 is slidably connected to the Z-axis slide rail 38 to realize the up and down movement of the lead screw connecting member 37. The printing platform 7 is arranged on the lead screw connecting member 37. When the lead screw connecting member 37 moves up and down, it drives the printing platform 7 to move up and down.

[0043] Preferably, the Z-axis motion mechanism 3 is detachably installed on the base 9. For example, it can be connected and fixed to the base 9 by hand-tightening screws, so as to facilitate the transportation of this printer. During transportation, the Z-axis motion mechanism 3 is removed from the base 9, and the synchronous belt between the Z-axis stepper motor 32 and the lead screw 36 is loosened, so that the Z-axis motion mechanism 3 and the base 9 are independent of each other, facilitating the transportation of the equipment.

[0044] In the present utility model, the printing platform 7 is connected to the lead screw connecting member 37 through a V-shaped bracket 71; the specific structure is as Figure 1 and Figure 7As shown in the figure, the V-shaped bracket 71 includes a fixing bracket 711 and two sliding rods 712. The inner end of the fixing bracket 711 is connected to the screw rod connecting piece 37 through a screw 72. The top surface of the screw rod connecting piece 37 abuts against the bottom surface of the fixing bracket 711 to position and support the fixing bracket 711. Two sliding channels are opened in the fixing bracket 711. The two sliding channels are arranged in a V-shaped structure with the openings facing outward. The two sliding rods 712 are respectively slidably installed in one sliding channel, and the outer ends of the sliding rods 712 extend out of the sliding channel. The sliding rods 712 can move along the sliding channel and expand and contract relative to the fixing bracket 711, so that the distance between the outer ends of the two sliding rods 712 can be adjusted according to the width of the printing platform 7. Tightening screws 713 are respectively arranged at the outer ends of the two sliding channels on the top surface of the fixing bracket 711, and the adjusted sliding rods 712 are fixed through the tightening screws 713. A first plug-in part 73 is respectively arranged at the outer end of each sliding rod 712. The two first plug-in parts 73 are provided with slots facing each other. A second plug-in part 74 is relatively fixedly arranged at the inner end of the bottom surface of the V-shaped bracket 71. For example, the second plug-in part 74 is fixed on the screw rod connecting piece 37. The second plug-in part 74 is provided with a positioning groove facing outward, that is, in the direction away from the Z-axis slide rail 38. The printing platform 7 is inserted into the positioning groove of the second plug-in part 74 through the slots of the two first plug-in parts 73. The printing platform 7 is supported by the slots and the positioning groove. At the same time, the inner end of the printing platform 7 abuts against the bottom of the positioning groove to position the printing platform 7.

[0045] In the present utility model, the automatic picking mechanism is as Figure 5 shown, and includes a guide rail 43 arranged on the base 9. In this embodiment, the arrangement direction of the guide rail 43 is taken as an example for description along the Y-axis moving direction of the print head mechanism 1. The material tank 48 is installed on the guide rail slider 44 matching the guide rail 43, so that the material tank 48 can move in the Y direction along the guide rail 43. A material tank magnet 45 is arranged at one end of the bottom surface of the material tank 48 away from the print head mechanism 1. A guide rail magnet 47 is arranged at one end of the guide rail 43 away from the print head mechanism 1. The material tank magnet 45 and the guide rail magnet 47 attract each other to fix the position of the material tank 48. This position is the normal position of the material tank 48. At this time, the scraper 41 is located on one side of the printing platform 7. When the 3D printer is printing, the material tank 48 is in this position; after the printing is completed, the material tank 48 together with the scraper 41 moves towards the printing platform 7, and the scraper 41 removes the product model on the printing platform 7.

[0046] The linkage structure between the material tank 48 and the mounting bracket 14 includes a material tank hook 42 arranged at one end of the bottom surface of the material tank 48 close to the print head mechanism 1, and a print head hook 49 arranged on the mounting bracket 14 of the print head mechanism 1 corresponding to the material tank hook 42. The material tank hook 42 and the print head hook 49 are both U-shaped block structures. The opening of the material tank hook 42 faces downward and the center line of the opening is perpendicular to the moving direction of the material tank 48, that is, the Y-axis direction. The structure of the print head hook 49 is as Figure 6As shown, the opening of the print head hook 49 is vertical and the opening is arranged to face left or right relative to the moving direction of the material tank 48. In this embodiment, the position where the opening of the print head hook 49 faces right is described. After printing is completed, the planar motion mechanism 2 operates. The print head mechanism 1 drives the print head hook 49 to first move to the left of the material tank hook 42, and then the print head hook 49 moves to the right and is hooked to the print head hook 49 located on the right side of the print head hook 49 to form a linkage structure, enabling the material tank 48 to move with the print head hook 49. The planar motion mechanism 2 operates to pull the material tank 48 forward along the guide rail 43, that is, towards the printing platform 7. The blade 41 operates to shovel the product model on the printing platform 7 and store it in the material tank 48.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A self-service inverted portable 3D printer, characterized in that: include: Base (9); A print head mechanism (1) comprises a mounting frame (14) arranged on a base (9) via a planar motion mechanism (2), and a wire feeding structure arranged on the mounting frame (14), wherein the outlet of the wire feeding structure is provided with a nozzle (11), and the outlet of the nozzle (11) faces upward; The extrusion mechanism (6) is arranged on the base (9), and its wire outlet is connected to the inlet of the wire feeding structure through a hose; A printing platform (7) is arranged on the base (9) via a Z-axis motion mechanism (3), and the printing platform (7) is located directly above the nozzle (11); The automatic pick-up mechanism (4) is arranged on one side of the print head mechanism (1), and comprises a material trough (48) which is arranged to move along the X-axis moving direction or the Y-axis moving direction of the print head mechanism (1) and has an upward opening, and a scraper (41) which is connected to the top of the material trough (48) via a fastener (40), and a linkage structure is provided between the material trough (48) and the print head mechanism (1).

2. The self-service pickup inverted portable 3D printer according to claim 1, characterized in that: The planar motion mechanism (2) is an X-axis and Y-axis cross slide motion structure.

3. The self-service inverted portable 3D printer according to claim 1, characterized in that: The planar motion mechanism (2) is a CoreXY motion structure.

4. The self-service pickup inverted portable 3D printer according to claim 1, characterized in that: The linkage structure comprises a material trough hook (42) arranged on the bottom surface of the material trough (48) at one end close to the print head mechanism (1), and a print head hook (49) arranged on the mounting frame (14) corresponding to the material trough hook (42), wherein the material trough hook (42) and the print head hook (49) are both U-shaped block structures, wherein the opening of the material trough hook (42) faces downward and the center line of the opening is perpendicular to the moving direction of the material trough (48), and the opening of the print head hook (49) is vertical and is arranged to the left or right relative to the moving direction of the material trough (48); After printing is completed, the material trough hook (42) and the print head hook (49) are connected and linked.

5. The self-service pickup inverted portable 3D printer according to claim 1, characterized in that: The base (9) is provided with a guide rail (43), the material trough (48) is mounted on a guide rail slider (44) matching the guide rail (43), a material trough magnet (45) is provided at one end of the bottom surface of the material trough (48) away from the print head mechanism (1), and a guide rail magnet (47) is provided at one end of the guide rail (43) away from the print head mechanism (1), and the material trough magnet (45) and the guide rail magnet (47) attract each other to fix the position of the material trough (48).

6. The self-service pickup inverted portable 3D printer according to claim 1, characterized in that: The mounting frame (14) is provided with a nozzle cooling fan (18), and the air outlet of the nozzle cooling fan (18) is directed toward the nozzle (11) to blow air to dissipate heat.

7. The self-service inverted portable 3D printer according to claim 1, characterized in that: A heating rod (12) and a temperature sensor (13) corresponding to the wire feeding structure are arranged in the mounting frame (14).

8. The self-service pickup inverted portable 3D printer according to claim 1, characterized in that: The Z-axis motion mechanism (3) is a screw slide structure, and the printing platform (7) is connected to the Z-axis motion mechanism (3) via a V-shaped bracket (71); The inner end of the V-shaped bracket (71) is mounted on the screw rod connector (37) of the Z-axis motion mechanism (3) by means of a screw (72); a first plug-in component (73) is respectively arranged on the left and right sides of the outer end of the bottom surface of the V-shaped bracket (71); two first plug-in components (73) are arranged opposite to slots; a second plug-in component (74) is relatively fixedly arranged at the inner end of the bottom surface of the V-shaped bracket (71); a positioning slot is provided outwardly on the second plug-in component (74); the printing platform (7) is supported by the slots of the two first plug-in components (73) and the positioning slot of the second plug-in component (74); and the inner end of the printing platform (7) is abutted against and positioned at the bottom of the positioning slot.

9. The self-service pickup inverted portable 3D printer according to claim 8, characterized in that: The V-shaped bracket (71) comprises a fixed frame (711) and two slide bars (712), the inner end of the fixed frame (711) is connected by a screw (72) and a screw rod connector (37), two slideways are provided in the fixed frame (711), and the two slideways are arranged in a V-shaped structure with the opening facing outwards, the two slide bars (712) are respectively slidably installed in one slide bar, and the outer ends of the slide bars (712) extend out of the slide bars, and a fixing screw (713) is respectively matched and arranged at the outer ends of the two slide bars, and the slide bars (712) are fixed by the fixing screw (713); The two first plug-in connectors (73) are respectively arranged on a slide rod (712).

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