Multicolor 3D printer

Abstract

The utility model discloses a multicolor 3D printer which comprises a supporting frame, a printing bottom plate, a three-axis driving mechanism, a spray head assembly, consumable connecting pipes and a wire feeding device, the wire feeding device is arranged, and a plurality of consumable connecting frames are arranged on the wire feeding device and used for being connected with consumables of different colors. Driving wheels in the consumable connecting frames are synchronously controlled by a driving shaft, a movable wheel is arranged at the top of each driving wheel, a consumable selecting mechanism is arranged, the consumable selecting mechanisms transversely move to the front ends of the different consumable connecting frames, and the driving wheels rotate to drive consumables to be extruded out or drawn back. The wire feeding device achieves the effect of selecting consumables with different colors, achieves coloring of different parts of printed objects, has the advantages of being simple in overall structure and high in stability, reduces design and use cost, is convenient to assemble and maintain and is good in compatibility.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a multi-color 3D printer. Background Art

[0002] In recent years, 3D printing technology has developed rapidly and has been widely used in various fields. With the increasing demand for 3D printing technology, people have higher and higher requirements for the color of printed objects. However, traditional FDM technology can only use single-color materials in one printing process and cannot meet the needs of multi-color printing. Therefore, it is of great significance to develop a multi-color 3D printer based on FDM technology.

[0003] Nowadays, some multi-color 3D printers based on different principles have been launched, but they have some problems, such as: complex structural design, low printing accuracy, low work efficiency, etc. Therefore, it is necessary to develop a multi-color 3D printer with simple structure, easy operation and good printing effect. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-color 3D printer to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a multi-color 3D printer, including a support frame and a wire feeding device, a printing base plate is installed at the inner bottom end of the support frame, a three-axis driving mechanism is installed inside the support frame, the three-axis driving mechanism is used to control the three-axis movement of the nozzle assembly, a consumable connecting pipe is arranged at the consumable interface at the top of the nozzle assembly, the wire feeding device is fixed on the top of the support frame, the wire feeding device includes a support frame, a consumable connecting frame, a consumable extrusion motor, a driving shaft, a consumable selection mechanism, a consumable switching motor, a consumable connecting frame moving mechanism and a polished rod, and the consumable connecting frame is transversely fixed to the support frame in parallel In the middle of the top end of the support frame, a consumable extrusion motor is fixed on the left side of the top end of the support frame, and the right side of the consumable extrusion motor is connected to the driving shaft in transmission, and the driving shaft transversely penetrates the consumable connecting frame and is connected to the consumable connecting frame in transmission, a consumable switching motor is fixed on the right side of the support frame, and a consumable connecting frame moving mechanism is installed in the middle of the top end of the support frame, the consumable switching motor is connected to the consumable connecting frame moving mechanism, and the consumable connecting frame moving mechanism is used to control the movement of the consumable selection mechanism, a light rod is fixed transversely on the top of the support frame, and the top of the consumable selection mechanism moves transversely along the light rod, and the support frame is fixed to the rear side of the top end of the support frame.

[0008] Preferably, the consumable connecting frame includes a fixed frame, a first through hole, a first clamping wheel group, a driving wheel, a movable wheel, a movable shaft, a slide groove, a connecting rod, a pressure rod, a fixed rotating shaft, a tension spring and a second through hole. The middle parts of the front and rear sides of the fixed frame are each provided with a first through hole, the first clamping wheel group is installed on the inner rear side of the fixed frame, the driving wheel is provided at the bottom end of the inner front side of the fixed frame, and the movable wheel is provided on the top of the driving wheel. The center of the movable wheel rotates along the movable shaft, and the left and right sides of the movable shaft slide vertically along the slide groove, and the slide groove is provided inside the fixed frame. The left and right side walls of the part, the outer side of the movable shaft is rotatably connected to the connecting rod, and the top of the connecting rod is rotatably connected to the pressure rod, the rear end of the pressure rod is rotatably connected along the fixed rotating shaft, and the left and right ends of the fixed rotating shaft are fixedly connected to the fixed frame, the top middle part of the pressure rod is elastically connected to the inner top wall of the fixed frame through a tension spring, a second through hole is opened on the front side of the top of the fixed frame, and the top of the pressure rod extends into the second through hole, the fixed frame is fixed to the top middle part of the support frame, the driving shaft transversely penetrates the fixed frame and the driving wheel, and the driving shaft is drivingly connected to the driving wheel.

[0009] Preferably, the consumable selection mechanism includes a movable frame, a third through hole, a second clamping wheel group, a ring, a cam and a servo, the movable frame is provided with a third through hole on both the front and rear sides, the second clamping wheel group is installed inside the movable frame, the front and rear sides of the top of the movable frame are fixed with rings, a cam is provided in the middle of the inner top end of the movable frame, the cam is transmission-connected to the servo, and the servo is fixed inside the movable frame, the middle of the top end of the movable frame is connected to the consumable connection frame moving mechanism, the ring is sleeved on the outside of the light rod, and the cam is provided at the top of the second through hole.

[0010] Preferably, the consumable connection frame moving mechanism includes an active synchronous pulley, a synchronous belt and a driven synchronous pulley. The active synchronous pulley rotates synchronously with the driven synchronous pulley through the synchronous belt. The active synchronous pulley is connected to the consumable switching motor, and one side of the synchronous belt is fixedly connected to the movable frame.

[0011] Preferably, the first through hole of the fixed frame and the third through hole of the movable frame are arranged at the same horizontal height.

[0012] Preferably, the first clamping wheel group and the second clamping wheel group have the same structure, with the bottom being a fixed wheel and the top being an elastic clamping wheel, and the fixed wheel and the clamping wheel are used to clamp the consumables.

[0013] Preferably, the connecting rod and the tension spring are both inclined upward from front to back, and the pressure rod is inclined downward from front to back.

[0014] (III) Beneficial effects

[0015] The utility model provides a multi-color 3D printer. It has the following beneficial effects: a wire feeding device is provided, a plurality of consumable connection frames are provided on the wire feeding device for connecting consumables of different colors, the driving wheels in the plurality of consumable connection frames are synchronously controlled by a driving shaft, and a movable movable wheel is provided on the top of the driving wheel, and a consumable selection mechanism is provided, which is laterally moved to the front end of different consumable connection frames through the consumable selection mechanism, and the cam is driven by the steering gear to rotate to press down the pressure rod of the consumable connection frame, and the pressure rod pushes the movable wheel downward through the connecting rod, and the movable wheel moves downward to clamp the consumable between the movable wheel and the driving wheel, so that the driving wheel rotates to drive the consumable to be extruded or withdrawn, and when the cam does not press down the pressure rod, the pressure rod is pulled upward by the tension spring to rotate, and then the movable wheel is driven to move upward, so that the rotation of the driving wheel does not drive the consumable to be extruded or withdrawn, so as to achieve the effect of selecting consumables of different colors, and realize the coloring of different parts of the printed object, and the wire feeding device is simple as a whole and has the characteristics of high stability, which not only reduces the design and use costs, is easy to assemble and maintain, but also has good compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the nozzle assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the wire feeding device in the utility model;

[0019] Figure 4 This is a schematic diagram of the drive shaft structure in the utility model;

[0020] Figure 5 It is a right view of the internal structure of the consumable selection mechanism in the utility model;

[0021] Figure 6 This is a schematic diagram of the cam structure in the utility model;

[0022] Figure 7 It is a right view of the internal structure of the consumable connection frame in the utility model.

[0023] In the figure: support frame-1, printing base plate-2, three-axis driving mechanism-3, nozzle assembly-4, consumable connecting pipe-5, wire feeding device-6, support frame-61, consumable connecting frame-62, consumable extrusion motor-63, driving shaft-64, consumable selection mechanism-65, consumable switching motor-66, consumable connecting frame moving mechanism-67, light rod-68, fixed frame-621, first through hole-622, first clamping wheel group-623, driving wheel-624, movable wheel -625, movable shaft -626, slide groove -627, connecting rod -628, pressure rod -629, fixed rotating shaft -6210, tension spring -6211, second through hole -6212, movable frame -651, third through hole -652, second clamping wheel group -653, collar -654, cam -655, servo -656, active synchronous pulley -671, synchronous belt -672, driven synchronous pulley -673, fixed wheel -6231, clamping wheel -6232. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 and Figure 2 The utility model provides a technical solution for a multi-color 3D printer: a multi-color 3D printer, comprising a support frame 1 and a wire feeding device 6, a printing base plate 2 is installed at the bottom end of the inner part of the support frame 1, a three-axis driving mechanism 3 is installed inside the support frame 1, the three-axis driving mechanism 3 is used to control the three-axis movement of a nozzle assembly 4, a consumable connecting tube 5 is arranged at the consumable interface at the top of the nozzle assembly 4, and the wire feeding device 6 is fixed to the top of the support frame 1.

[0026] See also Figure 3 and Figure 4The utility model provides a technical solution for a multi-color 3D printer: a multi-color 3D printer, a wire feeding device 6 includes a support frame 61, a consumable connecting frame 62, a consumable extrusion motor 63, a driving shaft 64, a consumable selection mechanism 65, a consumable switching motor 66, a consumable connecting frame moving mechanism 67 and a light rod 68, the consumable connecting frame 62 is transversely fixed in parallel to the middle of the top end of the support frame 61, the consumable extrusion motor 63 is fixed on the left side of the top end of the support frame 61, the right side of the consumable extrusion motor 63 is transmission-connected to the driving shaft 64, the driving shaft 64 transversely penetrates the consumable connecting frame 62, and is transmission-connected to the consumable connecting frame 62, the right side of the support frame 61 is fixed with a consumable switching motor 66, the consumable connecting frame moving mechanism 67 is installed at the middle of the top end of the support frame 61, the consumable switching motor 66 is transmission-connected to the consumable connecting frame moving mechanism 67, the consumable The connecting frame moving mechanism 67 is used to control the movement of the consumable selection mechanism 65. A light rod 68 is laterally fixed to the top of the support frame 61, and the top of the consumable selection mechanism 65 moves laterally along the light rod 68. The support frame 61 is fixed to the rear side of the top of the support frame 1. The consumable connecting frame moving mechanism 67 includes an active synchronous pulley 671, a synchronous belt 672 and a driven synchronous pulley 673. The active synchronous pulley 671 rotates synchronously with the driven synchronous pulley 673 through the synchronous belt 672. The active synchronous pulley 671 is connected to the consumable switching motor 66 for transmission. One side of the synchronous belt 672 is fixedly connected to the movable frame 651. The active synchronous pulley 671 is driven to rotate by the consumable switching motor 66. The active synchronous pulley 671 drives the synchronous belt 672 to rotate, and the active synchronous pulley 671 drives the synchronous belt 672 to rotate, and the active frame 651 of the consumable selection mechanism 65 is driven to move laterally through the rotation of the synchronous belt 672.

[0027] See also Figure 5 , Figure 6 , Figure 7The utility model provides a technical solution for a multi-color 3D printer: a multi-color 3D printer, a consumable connecting frame 62 includes a fixed frame 621, a first through hole 622, a first clamping wheel group 623, a driving wheel 624, a movable wheel 625, a movable shaft 626, a slide groove 627, a connecting rod 628, a pressure rod 629, a fixed rotating shaft 6210, a tension spring 6211 and a second through hole 6212. The fixed frame 621 is provided with a first through hole 622 in the middle of both the front and rear sides, the fixed frame 621 is provided with a first clamping wheel group 623 on the inner rear side of the fixed frame 621, a driving wheel 624 is provided on the inner front bottom end of the fixed frame 621, and a movable wheel 625 is provided on the top of the driving wheel 624. The movable wheel 625 rotates along the movable shaft 626 at the center of the circle, and the movable shaft 626 is vertically rotated along the slide groove 627 on the left and right sides. The movable shaft 626 is rotatably connected to the connecting rod 628 on the outer side, and the top of the connecting rod 628 is rotatably connected to the pressure rod 629, and the rear end of the pressure rod 629 is rotatably connected along the fixed rotating shaft 6210, and the left and right ends of the fixed rotating shaft 6210 are fixedly connected to the fixed frame 621, and the middle part of the top of the pressure rod 629 is elastically connected to the inner top wall of the fixed frame 621 through a tension spring 6211, and a second through hole 6212 is provided on the front side of the top of the fixed frame 621, and the top of the pressure rod 629 extends into the second through hole 6212, and the fixed frame 621 is fixed to the middle part of the top of the support frame 61, and the driving shaft 64 passes through the fixed frame 621 and the driving wheel 624 in a transverse direction, and the driving shaft 64 is drivingly connected to the driving wheel 624;

[0028] The consumable material selection mechanism 65 includes a movable frame 651, a third through hole 652, a second clamping wheel group 653, a collar 654, a cam 655 and a steering gear 656. The movable frame 651 is provided with a third through hole 652 on both the front and rear sides. The second clamping wheel group 653 is installed inside the movable frame 651. The collar 654 is fixed on both the front and rear sides of the top of the movable frame 651. A cam 655 is provided in the middle of the inner top of the movable frame 651. The cam 655 is connected to the steering gear 656 in a transmission manner, and the steering gear 656 is fixed inside the movable frame 651. The middle of the top of the movable frame 651 is connected to the consumable material connection frame moving mechanism 67. The collar 654 is sleeved on the outer side of the polished rod 68. The cam 655 is provided at the top of the second through hole 6212.

[0029] The first through hole 622 of the fixed frame 621 and the third through hole 652 of the movable frame 651 are arranged at the same horizontal height, so that the consumables extend into the fixed frame 621 through the first through hole 622 on the rear side of the fixed frame 621, extend out from the first through hole 622 on the front side of the fixed frame 621, extend into the movable frame 651 through the third through hole 652 on the rear side of the movable frame 651, and extend out from the third through hole 652 on the front side of the movable frame 651. The first clamping wheel group 623 and the second clamping wheel group 653 have the same structure, with a fixed wheel 6231 at the bottom and an elastic clamping wheel 6232 at the top. The fixed wheel 6231 and the clamping wheel 6232 are used to clamp the consumables, so that the consumables can slide and fall easily. The connecting rod 628 and the tension spring 6211 are both tilted upward from front to back, and the pressure rod 629 is tilted downward from front to back, so that the cam 655 rotates to squeeze the pressure rod 629 downward, and the pressure rod 629 pushes the movable shaft 626 through the connecting rod 628 to drive the movable wheel 625 to move downward, and the movable wheel 625 moves downward to clamp the consumable between the movable wheel 625 and the driving wheel 624, so that the driving wheel 624 rotates to drive the consumable to be extruded or withdrawn, and when the cam 655 does not press the pressure rod 629 downward, the tension spring 6211 pulls the pressure rod 629 to rotate upward, thereby driving the movable wheel 625 to move upward, so that the rotation of the driving wheel 624 will not drive the consumable to be extruded or withdrawn.

[0030] When using:

[0031] First, the consumables of different colors required are connected to the consumable connecting frame 62. The consumables extend into the fixed frame 621 through the first through hole 622 at the rear side of the fixed frame 621, and are clamped by the first clamping wheel set 623 in the fixed frame 621 to prevent the consumables from falling off. The consumables extend between the driving wheel 624 and the movable wheel 625 inside the consumable connecting frame 62.

[0032] Second, when selecting consumables of different colors, the consumable switching motor 66 is controlled to drive the active synchronous pulley 671 of the consumable connection frame moving mechanism 67 to rotate, and the active synchronous pulley 671 drives the synchronous belt 672 to rotate, and the rotation of the synchronous belt 672 drives the movable frame 651 of the consumable selection mechanism 65 to move horizontally, and the movable frame 651 slides horizontally along the light rod 68 to move the consumable selection mechanism 65 to the front end of the consumable connection frame 62 of the required color, and then the steering engine 656 is controlled to drive the cam 655 to rotate, and the cam 655 rotates to press the pressure rod 629 of the consumable connection frame 62, and the pressure rod 629 is driven by the consumable switching motor 66 to drive the consumable switching motor 66 to rotate. The connecting rod 628 pushes the movable shaft 626 to drive the movable wheel 625 to move downward, and the movable wheel 625 moves downward to clamp the consumables between the movable wheel 625 and the driving wheel 624, and then controls the consumable extrusion motor 63 to drive, and the consumable extrusion motor 63 drives the driving wheel 624 to rotate through the driving shaft 64, and the driving wheel 624 rotates to drive the consumables to be extruded or withdrawn. Since the pressure rod 629 in the other consumable connection frame 62 is not squeezed, the tension spring 6211 pulls the pressure rod 629 to rotate upward, thereby driving the movable wheel 625 to move upward, so that the rotation of the driving wheel 624 will not drive the consumables to be extruded or withdrawn;

[0033] Third, when the consumable is extruded, it extends out from the first through hole 622 on the front side of the fixed frame 621, extends into the movable frame 651 through the third through hole 652 on the rear side of the movable frame 651, and extends out from the third through hole 652 on the front side of the movable frame 651, moves the nozzle assembly 4 to the front side of the consumable selection mechanism 65, and connects the consumable connecting tube 5 of the nozzle assembly 4 to the third through hole 652 on the front side of the movable frame 651, so that the consumable is connected to the nozzle assembly 4 through the consumable connecting tube 5, and completes the selection and connection of consumables of different colors;

[0034] Fourth, when replacing consumables of different colors, by controlling the consumables in use to be withdrawn into the consumable connection frame 62, and then squeezing out the consumables of the required color and connecting them to the nozzle assembly 4, the selection and replacement of consumables of different colors can be completed, and the coloring of different parts of the printed object can be achieved.

[0035] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0036] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-color 3D printer, comprising a support frame (1), a printing base plate (2) being installed at the bottom of the support frame (1), a three-axis driving mechanism (3) being installed inside the support frame (1), the three-axis driving mechanism (3) being used for controlling the three-axis movement of a nozzle assembly (4), and a consumable connecting pipe (5) being arranged at a consumable interface at the top of the nozzle assembly (4); Features: The invention also comprises a wire feeding device (6), wherein the wire feeding device (6) is fixed on the top of the support frame (1), and the wire feeding device (6) comprises a support frame (61), a consumable connecting frame (62), a consumable extrusion motor (63), a drive shaft (64), a consumable selection mechanism (65), a consumable switching motor (66), a consumable connecting frame moving mechanism (67) and a light rod (68), wherein the consumable connecting frame (62) is transversely fixed in parallel to the middle of the top end of the support frame (61), a consumable extrusion motor (63) is fixed on the left side of the top end of the support frame (61), and the right side of the consumable extrusion motor (63) is transmission-connected to the drive shaft (64), and the drive shaft (64) transversely penetrates A consumable connecting frame (62) is connected to the consumable connecting frame (62) in a transmission connection. A consumable switching motor (66) is fixed on the right side of the support frame (61). A consumable connecting frame moving mechanism (67) is installed in the middle of the top end of the support frame (61). The consumable switching motor (66) is connected to the consumable connecting frame moving mechanism (67) in a transmission connection. The consumable connecting frame moving mechanism (67) is used to control the movement of the consumable selecting mechanism (65). A light rod (68) is fixed to the top of the support frame (61) in a transverse direction, and the top of the consumable selecting mechanism (65) moves transversely along the light rod (68). The support frame (61) is fixed to the rear side of the top end of the support frame (1).

2. A multi-color 3D printer according to claim 1, characterized in that: The consumable material connection frame (62) comprises a fixed frame (621), a first through hole (622), a first clamping wheel group (623), a driving wheel (624), a movable wheel (625), a movable shaft (626), a slide groove (627), a connecting rod (628), a pressure rod (629), a fixed rotating shaft (6210), a tension spring (6211) and a second through hole (6212). The middle of the front and rear sides of the fixed frame (621) are each provided with a first through hole ( 622), a first clamping wheel group (623) is installed on the inner rear side of the fixed frame (621), a driving wheel (624) is arranged on the inner front bottom end of the fixed frame (621), a movable wheel (625) is arranged on the top of the driving wheel (624), the center of the movable wheel (625) rotates along the movable shaft (626), the left and right sides of the movable shaft (626) slide vertically along the slide groove (627), and the slide groove (627) is provided with a movable shaft (626). On the left and right side walls inside the fixed frame (621), the outer side of the movable shaft (626) is rotatably connected to the connecting rod (628), and the top end of the connecting rod (628) is rotatably connected to the pressure rod (629), the rear end of the pressure rod (629) is rotatably connected along the fixed rotating shaft (6210), and the left and right ends of the fixed rotating shaft (6210) are fixedly connected to the fixed frame (621), and the middle part of the top end of the pressure rod (629) is connected to the fixed frame (621) by a tension spring (6211). The fixing frame (621) is elastically connected to the inner top wall of the fixing frame (621); a second through hole (6212) is provided on the front side of the top of the fixing frame (621); and the top of the pressure rod (629) extends into the second through hole (6212); the fixing frame (621) is fixed to the middle of the top of the support frame (61); the driving shaft (64) transversely penetrates the fixing frame (621) and the driving wheel (624); and the driving shaft (64) is drivingly connected to the driving wheel (624).

3. A multi-color 3D printer according to claim 1, characterized in that: The consumable material selection mechanism (65) comprises a movable frame (651), a third through hole (652), a second clamping wheel group (653), a collar (654), a cam (655) and a steering gear (656). The movable frame (651) is provided with a third through hole (652) on both the front and rear sides. The movable frame (651) is provided with a second clamping wheel group (653) inside. The top of the movable frame (651) is provided with a collar (654) on both the front and rear sides. ), a cam (655) is arranged at the middle of the inner top end of the movable frame (651), the cam (655) is connected to the steering gear (656) by transmission, and the steering gear (656) is fixed inside the movable frame (651), the middle of the top end of the movable frame (651) is connected to the consumable connecting frame moving mechanism (67), the collar (654) is sleeved on the outer side of the light rod (68), and the cam (655) is arranged at the top of the second through hole (6212).

4. A multi-color 3D printer according to claim 1, characterized in that: The consumable material connection frame moving mechanism (67) comprises an active synchronous pulley (671), a synchronous belt (672) and a driven synchronous pulley (673); the active synchronous pulley (671) rotates synchronously with the driven synchronous pulley (673) via the synchronous belt (672); the active synchronous pulley (671) is transmission-connected to the consumable material switching motor (66); and one side of the synchronous belt (672) is fixedly connected to the movable frame (651).

5. A multi-color 3D printer according to claim 2, characterized in that: The first through hole (622) of the fixed frame (621) and the third through hole (652) of the movable frame (651) are arranged at the same horizontal height.

6. A multi-color 3D printer according to claim 2, characterized in that: The first clamping wheel group (623) and the second clamping wheel group (653) have the same structure, with a fixed wheel (6231) at the bottom and an elastic clamping wheel (6232) at the top, and the fixed wheel (6231) and the clamping wheel (6232) are used to clamp the consumables.

7. A multi-color 3D printer according to claim 2, characterized in that: The connecting rod (628) and the tension spring (6211) are both inclined upward from front to back, and the pressure rod (629) is inclined downward from front to back.

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