阅读说明：本技术 一种新型3d打印机耗材切换装置 (Novel 3D printer consumptive material switches device ) 是由 牛明建 沈浩宇 阮智力 江先志 于 2021-01-12 设计创作，主要内容包括：本发明公开了一种新型3D打印机耗材切换装置,涉及打印领域,包括底板、驱动电机、换线轴、驱动线轴、换线滚轮、微型螺杆和横向移动块；所述底板中部设置有过线通道；所述换线轴嵌设于底板内；所述换线滚轮交错转动设置于换线轴表面；所述底板两侧设置有换线支架,所述换线轴与换线支架转动相连接；所述驱动线轴转动设置于换线支架之间,所述驱动线轴与换线轴表面的换线滚轮配合连接；所述驱动电机固定于换线支架外表面,驱动电机伸出端与驱动线轴固定连接。解决了同一卷线材通常是单一颜色,因此完成的打印成品通常是单一颜色的问题。(The invention discloses a novel consumable switching device of a 3D printer, which relates to the field of printing and comprises a bottom plate, a driving motor, a wire changing shaft, a driving wire shaft, a wire changing roller, a micro screw rod and a transverse moving block, wherein the driving motor is arranged on the bottom plate; the middle part of the bottom plate is provided with a wire passing channel; the wire changing shaft is embedded in the bottom plate; the wire changing rollers are arranged on the surface of the wire changing shaft in a staggered and rotating manner; the two sides of the bottom plate are provided with wire replacing supports, and the wire replacing shafts are rotatably connected with the wire replacing supports; the driving spool is rotatably arranged between the wire replacing brackets and is in fit connection with the wire replacing roller on the surface of the wire replacing spool; the driving motor is fixed on the outer surface of the wire replacing support, and the extending end of the driving motor is fixedly connected with the driving wire shaft. The problem that the same winding material is usually in a single color, so that the finished printing product is usually in a single color is solved.)

1. A novel consumable switching device for a 3D printer is characterized by comprising a bottom plate, a driving motor, a wire changing shaft, a driving wire shaft, a wire changing roller, a micro screw rod and a transverse moving block;

the middle part of the bottom plate is provided with a wire passing channel;

the wire changing shaft is embedded in the bottom plate;

the wire changing rollers are arranged on the surface of the wire changing shaft in a staggered and rotating manner;

the two sides of the bottom plate are provided with wire replacing supports, and the wire replacing shafts are rotatably connected with the wire replacing supports;

the driving spool is rotatably arranged between the wire replacing brackets and is in fit connection with the wire replacing roller on the surface of the wire replacing spool;

the driving motor is fixed on the outer surface of the wire replacing support, and the extending end of the driving motor is fixedly connected with the driving wire shaft.

2. The novel consumable switching device for the 3D printer according to claim 1, wherein a plurality of wire hoses are arranged under the bottom plate and communicated with the wire passing channel in parallel.

3. The novel consumable switching device for the 3D printer according to claim 2, wherein the number of the wire changing rollers is the same as that of the wire hoses.

4. The novel consumable switching device for the 3D printer according to claim 3, wherein a spool-changing stepping motor is externally connected to the spool-changing shaft.

5. The novel consumable switching device for the 3D printer according to claim 4, wherein a micro screw and a sliding rod are arranged at the upper part of the wire changing bracket;

the outer end part of the micro screw is connected with a first stepping motor,

the outer surface of the sliding rod is slidably sleeved with a moving block;

the moving block is in threaded connection with the outer surface of the micro screw.

6. The novel consumable switching device for the 3D printer according to claim 5, wherein an upper channel port is formed in an end portion of the moving block, and the upper channel port is connected with the wire passing groove.

7. An automatic silk changing method based on 3D printing is characterized in that,

moving the moving block, aligning the upper channel opening to the selected wire, and enabling the wire to enter the moving block from the upper channel opening;

the wire changing shaft is rotated to ensure that the wire changing roller corresponding to the selected wire is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive the wire to move;

in the case where the wire needs to be replaced,

starting the driving wire to rotate reversely in the axial direction, and withdrawing the wire;

moving the moving block, aligning the upper channel port to a newly selected wire rod, and enabling the newly selected wire rod to enter the moving block from the upper channel port;

rotating the wire changing shaft to ensure that the wire changing roller corresponding to the newly selected wire material is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive a newly selected wire to move;

to complete the wire replacement.

Technical Field

The invention relates to the field of printing, in particular to a novel consumable switching device for a 3D printer.

Background

3D printing is one of rapid prototyping technologies, which is a technology for constructing an object by spreading and printing materials layer by layer based on a digital model file. Currently, 3D printing technology is attracting attention and gradually becomes a new mainstream processing technology, which improves productivity, reduces cost, and improves market competition of products. The 3D printer still has a wider development and popularization space, and faces a lot of difficulties and challenges, especially in the aspects of color printing, printing efficiency, material utilization rate, and the like, a more intensive research and exploration is needed. In the field of 3D printing, color 3D printing is one of the biggest obstacles it faces. The material is the material basis for 3D printing, the same roll of material is usually a single color, and thus the finished printed product is usually a single color. Therefore, the development of 3D printing is limited, and the method becomes one of main technical bottlenecks faced in the 3D printing technology popularization process.

Disclosure of Invention

The invention aims to provide a novel consumable switching device for a 3D printer, which aims to solve the problem that the material proposed in the background technology is a material basis for 3D printing, and the same coiled material is usually in a single color, so that the finished printed product is usually in a single color.

A novel consumable switching device for a 3D printer comprises a bottom plate, a driving motor, a wire changing shaft, a driving wire shaft, a wire changing roller, a micro screw and a transverse moving block;

the middle part of the bottom plate is provided with a wire passing channel;

the wire changing shaft is embedded in the bottom plate;

the wire changing rollers are arranged on the surface of the wire changing shaft in a staggered and rotating manner;

the two sides of the bottom plate are provided with wire replacing supports, and the wire replacing shafts are rotatably connected with the wire replacing supports;

the driving spool is rotatably arranged between the wire replacing brackets and is in fit connection with the wire replacing roller on the surface of the wire replacing spool;

the driving motor is fixed on the outer surface of the wire replacing support, and the extending end of the driving motor is fixedly connected with the driving wire shaft.

As an embodiment of the invention, a plurality of lead hoses are arranged under the bottom plate, are arranged side by side and communicated under the bottom plate and are communicated with the wire passing channel.

As an embodiment of the invention, the wire changing rollers and the wire hoses are the same in number.

As an embodiment of the invention, the wire replacing shaft is externally connected with a wire replacing shaft stepping motor.

As an embodiment of the invention, a micro screw and a sliding rod are arranged at the upper part of the wire changing bracket;

the outer end part of the micro screw is connected with a first stepping motor,

the outer surface of the sliding rod is slidably sleeved with a moving block;

the moving block is in threaded connection with the outer surface of the micro screw.

As an embodiment of the present invention, an upper passage port is provided at an end of the moving block, and the upper passage port is connected to the wire passing groove.

An automatic silk changing method based on 3D printing comprises the following steps,

moving the moving block, aligning the upper channel opening to the selected wire, and enabling the wire to enter the moving block from the upper channel opening;

the wire changing shaft is rotated to ensure that the wire changing roller corresponding to the selected wire is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive the wire to move;

in the case where the wire needs to be replaced,

starting the driving wire to rotate reversely in the axial direction, and withdrawing the wire;

moving the moving block, aligning the upper channel port to a newly selected wire rod, and enabling the newly selected wire rod to enter the moving block from the upper channel port;

rotating the wire changing shaft to ensure that the wire changing roller corresponding to the newly selected wire material is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive a newly selected wire to move;

to complete the wire replacement.

The invention has the beneficial effects that: after the driving motor is started, the driving spool can be guaranteed to rotate continuously, the wire rods enter the moving block through the wire passing grooves, finally enter the wire hose through the wire passing channels and then stretch out, enter the bottom plate and are pulled by matching with the driving spool through the wire changing idler wheels. The wire changing roller is extruded with the driving spool to provide power for the wire, and the matching position of the wire changing roller and the driving spool is changed by changing the angle of the wire changing spool, so that different wires can be changed and selected for application.

When a certain wire is selected to be used, the wire changing shaft stepping motor drives the wire changing shaft to rotate by a certain angle, the wire changing idler wheel corresponding to the wire on the wire changing shaft is matched with the driving wire shaft, the wire is extruded to be tightly contacted with the driving wire shaft, and meanwhile, the stepping motor of the miniature screw rod rotates to drive the moving block to transversely move to the wire passing channel corresponding to the wire. The driving motor rotates, so that the wire between the wire changing shaft and the driving shaft extends upwards due to friction force until the wire penetrates through the moving block and enters the flexible wire guide pipe. The wire rod extends to a material spray head of the D printer in the wire hose;

when another wire is adopted, the spool is driven to rotate reversely, so that the wires in the wire changing device and the D printing device return to the upper channel at the upper position; and when the wire changing shaft rotates by a certain angle, the wire changing roller extrudes the wire material to be tightly contacted with the driving wire shaft, the micro screw rod rotates, and the micro screw rod can drive the moving block to transversely move to the position of the wire material corresponding to the wire passing channel to continue the operation.

Drawings

FIG. 1 is an exploded view of a wire-changing unit according to the present invention;

FIG. 2 is a side view of a creel according to the present invention;

FIG. 3 is a top view of a wire-changing shaft according to the present invention;

FIG. 4 is a front view of an automatic filament changer for 3D printing according to the present invention;

FIG. 5 is a front view of a cartridge holder unit according to the invention;

fig. 6 is an exploded view of a wire support unit according to the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1 to 6, a novel consumable switching device for a 3D printer includes a cartridge holder unit 1, a wire holder unit 2, a wire changing unit 3, a 3D printing unit 4, and a control box unit 5;

the bracket unit 1 comprises a bracket 11, a wire box 12, a partition plate 13 and a bracket shaft 14;

the brackets are arranged in pairs on a horizontal plane;

the wire box is rotatably connected to the bracket through a bracket shaft, and a wire is wound on the wire box;

the wire boxes are separated by a partition plate.

The wire boxes filled with wires are connected in series through the support shaft 14, each wire box is separated and blocked through the partition plate 13, and the wire boxes rub against each other when rotating, so that the resistance of the wires to be led out is increased. The proper position will optimize the wire transfer rate to some extent.

The lead support unit 2 comprises a frame 21, a guide ring 22, a guide wheel and an upper cover plate 25;

the racks 21 are arranged in pairs with the horizontal plane;

the upper cover plate 25 is covered at the uppermost end of the frame 21, and a wire passing groove is formed in the middle of the upper cover plate 25;

the guide ring 22 is rotatably arranged below the frame 21;

the guide wheels comprise an upper guide wheel and a lower guide wheel;

the upper guide wheel is rotatably arranged above the inside of the frame 21;

the lower guide wheel 23 is rotatably arranged below the inner part of the frame;

the wire passes through the guide ring 22, the lower guide wheel 23 and the upper guide wheel 24 and then passes out of the wire passing groove.

The wires are led out from the wire box and enter the guide ring 22 of the wire support unit 2, the guide ring 22 leads the scattered wires to pass through the corresponding directions, then the direction of the scattered wires is changed along the lower guide wheel 23, the scattered wires gradually extend upwards, and the scattered wires pass through the wire hose 32 and enter the wire changing device through the upper guide wheel; the wire cannot be bent directly through 90 degrees because of the present material properties. The middle part adopts an upper guide wheel: firstly, each wire can be limited and enters a specific channel in sequence; and secondly, the wire rod turns at a certain angle between the wire coil and the reversing inlet, so that the wire rod stably enters the reversing channel.

The automatic wire changing unit 3 comprises a bottom plate 31, a driving motor 34, a wire changing shaft 35, a driving shaft 36, a wire changing roller 37, a micro screw 38 and a transverse moving block 39;

the middle part of the bottom plate is provided with a wire passing channel;

the thread changing shaft 35 is embedded in the bottom plate 31;

the wire changing rollers 37 are arranged on the surface of the wire changing shaft 35 in a staggered and rotating mode;

the two sides of the bottom plate 31 are provided with wire changing brackets 33, and the wire changing shaft 35 is rotatably connected with the wire changing brackets 33;

the driving spool 36 is rotatably arranged between the wire changing brackets 33, and the driving spool 36 is in fit connection with a wire changing roller 37 on the surface of the wire changing shaft 35;

the driving motor 34 is fixed on the outer surface of the thread changing bracket 33, and the extending end of the driving motor 34 is fixedly connected with the driving thread shaft 36.

The wire hose 32 is arranged below the bottom plate, and the plurality of wire hoses 32 are arranged side by side and communicated with the bottom plate 31 and communicated with the wire passing channel.

The wire changing rollers 37 are the same in number as the wire hoses 32.

The wire changing shaft 35 is externally connected with a wire changing shaft stepping motor.

The upper part of the wire changing bracket 33 is provided with a micro screw 38 and a sliding rod;

the outer end of the micro screw rod 38 is connected with a first stepping motor 311,

a moving block 39 is slidably sleeved on the outer surface of the sliding rod;

the moving block 39 is in threaded connection with the outer surface of the micro screw 38.

An upper channel port 391 is arranged at the end part of the moving block 39, and the upper channel port is connected with the wire passing groove.

An automatic silk changing method based on 3D printing comprises the following steps,

moving the moving block, aligning the upper channel opening to the selected wire, and enabling the wire to enter the moving block from the upper channel opening;

the wire changing shaft is rotated to ensure that the wire changing roller corresponding to the selected wire is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive the wire to move;

in the case where the wire needs to be replaced,

starting the driving wire to rotate reversely in the axial direction, and withdrawing the wire;

moving the moving block, aligning the upper channel port to a newly selected wire rod, and enabling the newly selected wire rod to enter the moving block from the upper channel port;

rotating the wire changing shaft to ensure that the wire changing roller corresponding to the newly selected wire material is contacted with the driving wire shaft;

starting a driving spool, wherein the driving spool is in contact with a driving roller to drive a newly selected wire to move;

to complete the wire replacement.

After the driving motor 34 is started, the driving spool 36 can be ensured to rotate continuously, the wire rod enters the moving block 39 through the wire passing groove, finally enters the wire hose 32 through the wire passing channel and then extends out, enters the bottom plate 31, and is pulled by matching the wire changing roller 37 with the driving spool 36. The wire changing roller 37 is pressed against the driving spool 36 to power the wire, and the matching position of the wire changing roller 37 and the driving spool 36 is changed by changing the angle of the changing spool 35, so that different wires can be changed and selected for application.

When a certain wire is selected to be used, the wire changing shaft stepping motor drives the wire changing shaft 35 to rotate by a certain angle, the wire changing roller 37 corresponding to the wire on the wire changing shaft 35 is matched with the driving shaft 36 to extrude the wire to be tightly contacted with the driving shaft 36, and meanwhile, the stepping motor 311 of the micro screw 38 rotates to drive the moving block to transversely move to the wire passing channel corresponding to the wire. The drive motor rotates to extend the wire between the change spool 35 and the drive spool 36 upward due to friction until it passes through the traveling block 39 into the wire hose 32. The wires extend in the wire hose 32 all the way to the material spray head of the 3D printer;

when another wire is adopted, the driving spool 35 rotates reversely, so that the wires in the wire changing device and the 3D printing device return to the upper channel; when the wire changing shaft 35 rotates a certain angle, the wire changing roller 37 extrudes the wire material to be tightly contacted with the driving shaft 36, the micro screw rod 3 rotates, and the micro screw rod 3 can drive the moving block 39 to transversely move to the position of the wire material corresponding to the wire passing channel, and the operation is continued.

In addition, the main control box is responsible for regulating the operation of the whole device; the main control box comprises an automatic wire changing unit and a 3D printing device.

Therefore, the invention can be combined with the existing 3D printing technology to realize the switching use of different wires for 3D printing and can realize automatic switching, so that the requirement of 3D full-color printing can be met to a certain extent. 3D printing cost is reduced, the technical field of 3D printing is expanded, and the 3D printing technology has more practical value.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.