A modular multi-color material changing device for 3D printer

Abstract

The present invention discloses a modular multi-color material changing device for a 3D printer, comprising a material changing rack, wherein a first driving wheel, a first driven wheel, a second driven wheel, and a third driven wheel are symmetrically provided at both ends of the material changing rack, a feeding motor and a material selecting motor are provided on the side of the first driving wheel away from the first driven wheel, a plurality of color blocks are provided at the lower end of the first driving wheel and the first driven wheel located between the material changing racks, and a material selector, a screw rod, and two sliding rods are provided at the upper end between the material changing racks. The beneficial effects of the present invention include avoiding the problem of low efficiency caused by manual color changing, and also avoiding the problem of consumables and print head mounting parts corresponding to manual color changing, thereby increasing printing efficiency and improving the production yield of the enterprise.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and in particular to a modular multi-color material changing device for a 3D printer. Background Art

[0002] A 3D printer, also known as a 3D printer, is a rapid prototyping process that creates three-dimensional models layer by layer. Its operation is similar to that of a traditional printer, except that while traditional printers print ink onto paper to form a two-dimensional drawing, a 3D printer stacks liquid photosensitive resin, molten plastic filament, gypsum powder, and other materials layer by layer through spraying a binder or extrusion to form a three-dimensional entity.

[0003] When a 3D printer prints products of different colors, it needs to change colors. The existing color changes are all achieved by manually replacing color blocks. When it is necessary to replace the color block, the printer is stopped, the existing color block is manually removed, and then the color to be replaced is connected or installed to the print head or loading head. Then, the 3D printing equipment is turned on to print other colors. This method is inefficient, and the loading head and the material strip are often misaligned, which also leads to a low product yield and is easy to damage the print head. Summary of the Invention

[0004] The object of the present invention is to provide a modular multi-color material changing device for a 3D printer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a modular multi-color material changing device for a 3D printer, comprising a material changing rack, wherein a first driving wheel, a first driven wheel, a second driven wheel and a third driven wheel are symmetrically provided at both ends of the material changing rack, a feeding motor and a material selecting motor are provided on the side of the first driving wheel away from the first driven wheel, a plurality of color blocks are provided at the lower ends of the first driving wheel and the first driven wheel located between the material changing racks, and a material selector, a screw rod and two sliding rods are provided at the upper ends between the material changing racks.

[0006] Preferably, the plurality of color blocks are composed of a color block base and a color block cover, a driving gear connected to an active rod provided at the driving end of the feeding motor is provided in the middle of the color block base, a first driven gear meshed with the driving gear is provided at the lower end of the color block cover, and a material port corresponding to the matching material is also provided at one end of the color block base close to the material selector.

[0007] Preferably, the color block base and the color block cover are provided with a color block bayonet at the other end away from the material selector, and the two sides of the color block base are respectively provided with a first fixing protrusion, a second fixing protrusion and a first fixing groove, and a second fixing groove.

[0008] Preferably, the material selector is composed of a movable cover and a material selection block arranged at its lower end, a discharge port corresponding to the material port is provided inside the material selection block, a second driven gear and a bearing are also provided inside the material selection block, a sensor is provided between the movable cover and the material selection block, and the sensor detection end corresponds to the upper end of the second driven gear.

[0009] Preferably, a steering gear rocker arm matching the first driven gear is provided at the lower end of the movable cover.

[0010] Preferably, corresponding magnets are provided on the color block upper cover and the color block base respectively.

[0011] Preferably, both ends of the material selector are slidably connected to the two sliding rods respectively, and the screw rod is connected to the middle part of the material selector.

[0012] Preferably, the feeding motor is provided with a second driving wheel connected to the other end away from the first driving wheel, and its upper end is provided with a fourth driven wheel connected to the first conveyor belt transmission, and a rotating rod connected to the fourth driven wheel and the second driven wheel is provided between them.

[0013] Preferably, the other end of the first driven wheel and the second driven wheel away from the material changing rack is provided with an adjustment knob.

[0014] Beneficial effects

[0015] The modular multi-color material changing device for a 3D printer provided by the present invention has the following characteristics: after the material selector receives the information instruction, it moves to the corresponding color block position through the lead screw and the sliding rod, and the servo rocker arm contacts the color block cover, so that the magnets provided between the color block cover and the color block base are attracted to each other, and the consumables are clamped after adsorption. The feeding motor starts to drive the active rod to rotate, thereby driving the active gear to rotate and transport the consumables to the material selector outlet pipe. When the sensor detects the consumables, the second driven gear and the bearing clamp the consumables and transport them to the loading point of the printer head, completing the color changing operation, avoiding the low efficiency problem caused by manual color changing, and also avoiding the problem of the consumables corresponding to the print head mounting part caused by manual color changing, thereby increasing printing efficiency and improving the production yield of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle;

[0018] Figure 3 It is a rear view schematic diagram of the overall structure of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the material selector of the present invention;

[0020] Figure 5 Schematic diagram of the color block structure of the present invention;

[0021] Figure 6 This is a schematic structural diagram of the color block of the present invention from another angle. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0023] Example

[0024] like Figure 1-6 As shown, a modular multi-color material changing device for a 3D printer includes a material changing frame 1, at both ends of which are symmetrically provided with a first driving wheel 5, a first driven wheel 4, a second driven wheel 6 and a third driven wheel 31, a feeding motor 3 and a material selecting motor 2 are respectively provided on the side of the first driving wheel 5 away from the first driven wheel 4, a plurality of color blocks 11 are provided at the lower end of the first driving wheel 5 and the first driven wheel 4 between the material changing frame 1, and a material selector 10, a screw rod 8 and two sliding rods 9 are provided at the upper end between the material changing frame 1.

[0025] In this embodiment, multiple color blocks 11 are composed of a color block base 18 and a color block cover 19. A driving gear 24 connected to an active rod provided at the driving end of the feeding motor 3 is provided in the middle of the color block base 18, and a first driven gear 25 meshing with the driving gear 24 is provided at the lower end of the color block cover 19. The color block base 18 is also provided with a material port 21 corresponding to the end thereof close to the material selector 10, wherein the driving gear 24 is driven by the driving rod connected to the driving end of the feeding motor 3 to transport the color ribbon.

[0026] A color block bayonet 20 is provided at the other end of the color block base 18 and the color block upper cover 19 away from the material selector 10. A first fixed protrusion 22, a second fixed protrusion 23 and a first fixed groove 32, a second fixed groove 33 are respectively provided on both sides of the color block base 18. The function of the color block bayonet 20 is to prevent the upper cover 19 from bouncing up due to magnetic force. Through multiple first fixed blocks 22, second fixed blocks 23, first fixed grooves 32, and second fixed grooves 33, multiple color blocks 11 can be matched and fixed together to realize the free selection of the material selector 10 and locate the position of the material port 21.

[0027] The material selector 10 is composed of a movable cover 34 and a material selection block 35 arranged at its lower end. A discharge port 12 corresponding to the material port 21 is provided inside the material selection block 35. A second driven gear 13 and a bearing 14 are also provided inside the material selection block 35. The movable cover 34 selects materials by reciprocating motion of the screw rod 8 and the sliding rod 9, and the second driven gear 13 and the bearing 14 pull the selected material strip out of the color block and transport it to the material connection on the printer head through the discharge port 12. A sensor 15 is provided between the movable cover 34 and the material selection block 35. The detection end of the sensor 15 corresponds to the upper end of the second driven gear 13. The sensor 15 can sense the length of the extruded consumable and can detect whether the material strip passes through the discharge port 12 pipeline.

[0028] The lower end of the movable cover 34 is provided with a servo rocker arm 17 corresponding to the first driven gear 25, and the color block upper cover 19 and the color block base 18 are respectively provided with corresponding magnets. The servo rocker arm 17 moves downward and contacts the color block upper cover 19, so that the color block upper cover 19 and the magnets respectively provided on the color block base 18 are attracted. After adsorption, the driving gear 24 and the first driven gear 25 provided therein are clamped with the material belt. The driving motor 3 drives the driving gear 24 to rotate, thereby conveying the material belt to the selector 10. The second driven gear 13 and the bearing 14 provided in the selector 10 clamp the material belt. The two ends of the selector 10 are respectively slidably connected to the two sliding rods 9, and the screw rod 8 is connected to the middle of the selector 10. The other end of the feeding motor 3 away from the first driving wheel 5 is provided with a second driving wheel 28 connected thereto, and the upper end thereof is provided with a fourth driven wheel 27 connected thereto through the first conveyor belt 29. A rotating rod 30 connected is provided between the fourth driven wheel 27 and the second driven wheel 6.

[0029] An adjusting knob 26 is provided at the other end of the first driven wheel 4 and the second driven wheel 6 away from the material changing rack 1 , and the distance between the material changing racks 1 is adjusted by the adjusting knob 26 .

[0030] When the equipment is started and the material selector receives the information instruction, it moves to the corresponding color block position through the lead screw and the sliding rod. The servo rocker arm moves to contact the color block cover, so that the magnets set between the color block cover and the color block base are adsorbed. After adsorption, the consumables are clamped. The feeding motor starts to drive the active rod to rotate, thereby driving the active gear to rotate and transport the consumables to the material selector outlet pipe. When the sensor detects the consumables, the second driven gear and the bearing clamp the consumables and transport them to the loading position of the printer head to complete the color change operation. In addition, the color blocks can be increased or decreased according to actual needs.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A modular multi-color material changing device for a 3D printer, characterized by: The invention comprises a material changing frame (1), wherein the first driving wheel (5), the first driven wheel (4), the second driven wheel (6) and the third driven wheel (31) are symmetrically provided at both ends of the material changing frame (1), a feeding motor (3) and a material selecting motor (2) are provided on the side of the first driving wheel (5) away from the first driven wheel (4), a plurality of color blocks (11) are provided at the lower ends of the first driving wheel (5) and the first driven wheel (4) between the material changing frame (1), and a plurality of color blocks (11) are provided at the upper ends of the material changing frame (1). The end is provided with a material selector (10), a screw rod (8) and two sliding rods (9); the plurality of color blocks (11) are composed of a color block base (18) and a color block cover (19), the middle of the color block base (18) is provided with a driving gear (24) connected to the driving rod provided at the driving end of the feeding motor (3), the lower end of the color block cover (19) is provided with a first driven gear (25) meshing with the driving gear (24), the color block base (18) is close to the material selector (10) One end of the color block base (18) and the color block upper cover (19) are also provided with a material port (21) that matches the material selector (10); the other end of the color block base (18) and the color block upper cover (19) away from the material selector (10) is provided with a color block bayonet (20); the two sides of the color block base (18) are respectively provided with a first fixed protrusion (22), a second fixed protrusion (23) and a first fixed groove (32), a second fixed groove (33); the material selector (10) is composed of a movable cover (34) and a material selection block (35) arranged at its lower end, and the material selector (10) is provided with a color block bayonet (20) and a second fixed groove (33) A discharge port (12) matching the material port (21) is provided inside the block (35); a second driven gear (13) and a bearing (14) are also provided inside the material selection block (35); a sensor (15) is provided between the movable cover (34) and the material selection block (35); a detection end of the sensor (15) corresponds to the upper end of the second driven gear (13); and a steering gear rocker arm (17) matching the first driven gear (25) is provided at the lower end of the movable cover (34).

2. The modular multi-color material changing device for a 3D printer according to claim 1, characterized in that: The color block upper cover (19) and the color block base (18) are respectively provided with corresponding magnets.

3. The modular multi-color material changing device for a 3D printer according to claim 1, characterized in that: The two ends of the material selector (10) are respectively slidably connected to the two sliding rods (9), and the screw rod (8) is connected to the middle of the material selector (10).

4. The modular multi-color material changing device for a 3D printer according to claim 1, characterized in that: The feeding motor (3) is provided with a second driving wheel (28) connected to the other end away from the first driving wheel (5), and a fourth driven wheel (27) is provided on the upper end thereof and is connected to the fourth driven wheel (27) through a first conveyor belt (29). A rotating rod (30) is provided between the fourth driven wheel (27) and the second driven wheel (6).

5. The modular multi-color material changing device for a 3D printer according to claim 1, characterized in that: An adjustment knob (26) is provided at the other end of the first driven wheel (4) and the second driven wheel (6) away from the material changing rack (1).

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