CN220499977U - Consumable propulsion equipment and three-dimensional printing equipment - Google Patents

Abstract

The application provides a consumable advancing device and three-dimensional printing equipment, consumable advancing device includes including: the consumable guiding device is provided with a plurality of feeding channels and discharging channels which are mutually communicated; a first driving member; the driving press rod is in driving connection with the first driving piece, the driving press rod comprises protrusions with different distances from the rotation axis, and the first driving piece is used for driving the driving press rod to rotate; the driving wheel assemblies are respectively corresponding to the feeding channels and the bulges, and when the driving pressing rod rotates, the driving wheel assemblies are driven to be positioned at a first position or a second position; and the second driving device corresponds to the feeding channel, when in the first position, the driving wheel assembly and the second driving device clamp consumable materials in the corresponding feeding channel, and when in the second position, the driving wheel assembly and the second driving device loosen the consumable materials in the corresponding feeding channel. The technical scheme of this application, the simple structure of changing the consumptive material easily realizes with low costs.

Description

Consumable propulsion equipment and three-dimensional printing equipment

Technical Field

The application relates to the technical field of 3D printing, in particular to consumable propelling equipment and three-dimensional printing equipment.

Background

Three-dimensional printing technology, i.e., three-dimensional printing technology, is typically implemented using a digital technology material printer. Stereolithography techniques are used to print models. The stereoscopic printing technology is widely used in jewelry, footwear, industrial design, construction, engineering and construction, automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.

In the existing desktop-level three-dimensional printing equipment, when a model is printed, if consumable materials need to be replaced, the structure is complex, and the cost is high. As disclosed in CN202110285760.1, a 3D printing multicolor nozzle device and a 3D printer are disclosed, and after printing a consumable, the nozzle needs to be replaced for use if another consumable is used for printing a model. So that the stereoscopic printing device needs more spray heads, and each spray head needs to be provided with a consumable propelling device, namely an extruder.

So the structure of the existing three-dimensional printing equipment with better consumable material is troublesome and the cost is higher.

Disclosure of Invention

The embodiment of the application provides consumable propulsion equipment and three-dimensional printing equipment, which are used for solving the problem that the consumable replacement structure in the prior art is complex.

In order to solve the technical problems, the following technical solutions are adopted in the embodiments of the present application:

in a first aspect, embodiments of the present application provide a consumable advancing apparatus for pushing a consumable forward, the consumable advancing apparatus comprising:

the consumable guide device is provided with a plurality of feeding channels and discharging channels which are mutually communicated;

a first driving member;

the driving press rod is in driving connection with the first driving piece, the driving press rod comprises protrusions with different distances from the rotation axis, and the first driving piece is used for driving the driving press rod to rotate;

the driving wheel assemblies are respectively corresponding to the feeding channel and the protrusions, and when the driving pressing rod rotates, the driving wheel assemblies are driven to be located at a first position or a second position;

the second driving device corresponds to the feeding channel and is used for driving consumable materials to advance, when the first driving device is in the first position, the driving wheel assembly and the second driving device clamp the consumable materials in the corresponding feeding channel, and when the second driving device is in the second position, the driving wheel assembly and the second driving device loosen the consumable materials in the corresponding feeding channel.

The driving wheel assembly comprises a pressing plate and a first driving wheel, the pressing plate can only rotate around a preset position, a connecting piece is arranged on one side, facing the feeding channel, of the pressing plate, the connecting piece is rotationally connected with the first driving wheel, and the pressing plate corresponds to a protrusion on the driving pressing rod;

when the driving pressing rod rotates, the pressing plate is driven to be located at a first position or a second position;

and when the first driving wheel and the second driving device are at the first position, the first driving wheel and the second driving device clamp the corresponding consumable in the feeding channel, and when the second driving wheel and the second driving device are at the second position, the first driving wheel and the second driving device loosen the corresponding consumable in the feeding channel.

The driving press rod comprises a rotating rod and eccentric wheels arranged on the rotating rod, the rotating rod is in driving connection with the first driving piece, the number of the eccentric wheels corresponds to the number of the driving wheel assemblies, the positions of the eccentric wheels correspond to the positions of the driving wheel assemblies, and the eccentric directions of the eccentric wheels are different; the eccentric wheel corresponds to the pressing plate;

the angle of the phase difference between the eccentric directions of different eccentric wheels is larger than or equal to 45 degrees.

The second driving device comprises a second driving piece and a second driving wheel, the second driving piece is in driving connection with the second driving wheel, and the second driving wheel corresponds to a plurality of feeding channels at the same time.

The second driving device further comprises a transmission device, the transmission device is respectively connected with the second driving piece and the second driving wheel, and the second driving piece drives the second driving wheel to rotate through the transmission device;

the transmission device comprises a first gear and a second gear, the first gear is connected with the second driving device, the second gear is meshed with the first gear, the second driving wheel is coaxially arranged with the second gear, the first gear and the second gear are driven to rotate when the second driving device rotates, and the second driving wheel and the second gear synchronously rotate;

the diameter ratio of the first gear to the second gear is 1:4-1:2.

Wherein, the consumable guider is last to be offered and to run through the broken hole of consumable guider, broken hole with feed channel intercommunication, broken hole respectively with drive wheel subassembly with second drive arrangement corresponds, broken hole is used for supplying drive wheel subassembly with second drive arrangement presss from both sides tightly corresponding consumable in the feed channel.

The consumable guiding device is further provided with a first notch penetrating through the consumable guiding device, the first notch is communicated with the feeding channel, and the first notch is located at one side of the broken hole away from the discharging channel;

the consumable pushing equipment further comprises a first consumable detection device, wherein the first consumable detection device corresponds to the first notch, and the first consumable detection device is used for detecting whether consumable exists at the position of the first notch in the feeding channel;

the consumable guiding device is also provided with a second notch penetrating through the consumable guiding device, and the second notch is communicated with the discharging channel;

the consumable propulsion equipment further comprises a second consumable detection device, the second consumable detection device corresponds to the second notch, and the second consumable detection device is used for detecting whether consumable exists at the position of the second notch in the discharging channel.

The consumable propulsion equipment further comprises a squeezing device, wherein the squeezing device corresponds to the driving wheel assembly and is used for applying force for clamping the consumable to the driving wheel assembly;

the extrusion device comprises an elastic piece and a position adjusting assembly, wherein the elastic piece is connected with one side, far away from the second driving device, of the pressing plate, the position adjusting assembly is connected with the elastic piece, and the position adjusting assembly is used for adjusting the length of the elastic piece so as to adjust the elastic force of the elastic piece;

the elastic piece is a spring, the position adjustment assembly comprises a limiting piece, a rotating piece and a nut, the limiting piece is rotationally connected with the rotating piece, the limiting piece is used for limiting the circumferential position of the rotating piece, threads are arranged on the rotating piece, the nut is in threaded connection with the threads, one end of the rotating piece is inserted into the spring, the nut is in butt joint with the spring, and when the rotating piece rotates, the position of the nut changes to adjust the length of the elastic piece.

The consumable propulsion equipment further comprises a shell, wherein the shell is respectively connected with the first driving piece and the consumable guiding device, and the pressing plate is rotationally connected with the shell;

the shell comprises a first half shell and a second half shell, the consumable propulsion equipment further comprises a fixing piece, the first half shell and the second half shell are connected to form a containing space, and the first driving piece and the fixing piece are located outside the containing space and are connected with the first half shell, the fixing piece and the first driving piece;

the driving compression bar passes through the first half shell and is connected with the first driving piece;

the plurality of driving wheel assemblies are positioned in the accommodating space;

the second driving device is connected with the first half shell.

In a second aspect, embodiments of the present application provide a stereoscopic printing apparatus, including the consumable advancing apparatus provided in the first aspect.

In the embodiment of the application, a plurality of feeding channels and discharging channels which are mutually communicated are formed in a consumable guiding device; the driving press rod is in driving connection with a first driving piece, the driving press rod comprises protrusions with different distances from the rotation axis, and the first driving piece is used for driving the driving press rod to rotate; the driving wheel assembly corresponds to the feeding channel and the bulge respectively, and when the driving pressing rod rotates, the driving wheel assembly is driven to be positioned at a first position or a second position; the second driving device corresponds to the feeding channel, when in the first position, the driving wheel assembly and the second driving device clamp consumable materials in the corresponding feeding channel, when in the second position, the driving wheel assembly and the second driving device loosen the consumable materials in the corresponding feeding channel, namely, different consumable materials are clamped and loosened through the first driving piece, the clamped consumable materials can be backed up by the first driving device and the second driving device after being used up or the consumable materials need to be replaced, after the consumable materials are backed up to the preset position, the first driving device and the second driving device loosen the backed consumable materials, and the first driving device and the second driving device clamp a new consumable material again, so that the consumable materials advance into a printing head of the three-dimensional printing equipment connected with the consumable material propelling equipment, namely, after the consumable materials are used up, the equipment does not need to be stopped, automatic material feeding and replacement of the consumable materials are realized, and the printing efficiency of the three-dimensional printing equipment is improved. And the consumable propulsion equipment has a simple structure, and the consumable replacement in the printing process does not need more printing heads and more consumable propulsion equipment, so that the cost of the three-dimensional printing equipment is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a consumable advancing device of the present application;

FIG. 2 is a schematic diagram of an exploded construction of the consumable advancing device of the present application;

FIG. 3 is a schematic view of another explosive manner of the consumable advancing device of the present application;

FIG. 4 is a schematic perspective view of a consumable guide of the present application;

FIG. 5 is a schematic perspective view of another view of the consumable guide of the present application;

FIG. 6 is a schematic perspective view of a position detecting device of the present application;

fig. 7 is a schematic perspective view of a first driving device of the present application;

FIG. 8 is a schematic view of an exploded construction of the first drive device of the present application;

FIG. 9 is a schematic view of an exploded construction of the second drive device of the present application;

fig. 10 is an exploded view of the extrusion apparatus of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Wherein the "connection" described in the present application may be a connection relationship as understood by those skilled in the art, such as a direct connection, an indirect connection, or an abutment.

Referring to fig. 1, 2 and 3, the present application provides a consumable advancing device 10, which is applied to a stereoscopic printing device, and the consumable advancing device 10 is used for advancing one of a plurality of consumables. The consumable advancing device 10 includes a housing 11, a pressing means 12, a first driving means 13, a second driving means 14, a position detecting means 15, and a consumable guiding means 16. Wherein the pressing device 12, the first driving device 13, the second driving device 14 and the consumable guiding device 16 are respectively connected with the shell 11, and the position detecting device 15 is connected with the shell 11 and/or the consumable guiding device 16. The position detecting device 15 is used for detecting the specific position of the consumable, when the consumable clamped by the first driving device 13 and the second driving device 14 moves to the preset position, the second driving device 14 is used for driving the consumable to advance, after the clamped consumable is used up or the consumable needs to be replaced, the first driving device 13 and the second driving device 14 can retract the clamped consumable, after the consumable is retracted to the preset position, the first driving device 13 and the second driving device 14 loosen the retracted consumable, the first driving device 13 and the second driving device 14 clamp a new consumable again, so that the consumable advances into a printing head of the three-dimensional printing equipment connected with the consumable propelling equipment 10, namely, after the consumable is used up, the equipment does not need to be shut down, automatic feeding and replacement of the consumable are realized, and the printing efficiency of the three-dimensional printing equipment is improved.

It can be appreciated that the consumable propulsion device 10 of the present application can also replace consumable when the consumable is not used up, thereby realizing printing of multiple consumable or colors of one model, and the consumable propulsion device 10 of the present application has the advantage of multiple functions. It can be understood that other extruders can be arranged between the consumable pushing device 10 and the printing head, the extruders are used for pushing consumable materials behind the consumable pushing device 10 to advance, the consumable pushing device 10 pushes clamped consumable materials to the extruder position or the set position behind the extruders, the consumable materials can be loosened by the consumable pushing device 10, and the consumable pushing device is only applicable to the extruders to work, so that power consumption is saved, the consumable pushing device 10 can be used as peripheral elements of the three-dimensional printing device, and can be configured as required.

Referring to fig. 4 and 5, the consumable guiding device 16 is provided with a plurality of feeding channels 161 and discharging channels 162, which are mutually communicated, wherein the feeding channels 161 are used for feeding consumable materials, and the discharging channels 162 are used for discharging consumable materials. The consumable guide 16 may be integrally formed with the housing 11 or of a split design; when split type design, consumable guider 16 is connected with the consumptive material, can carry out fixed connection through structures such as screw connection, bonding or joint. The specific number of the feed channels 161 is not limited, and may be 2, 3 or more, for example. In the present embodiment, the number of the feed channels 161 is 2, that is, the consumable guiding device 16 includes the first feed channel 161 and the second feed channel 161.

The consumable guiding device 16 is provided with a breaking hole 1611 penetrating through the consumable guiding device 16, the breaking hole 1611 is communicated with the feeding channel 161, the breaking hole 1611 corresponds to the first driving device 13 and the second driving device 14 respectively, and the breaking hole 1611 is used for clamping consumable in the corresponding feeding channel 161 by the first driving device 13 and the second driving device 14. The break hole 1611 may intercept the consumable guide 16 or may be a partial hole formed in the consumable guide 16. In this embodiment, the break hole 1611 may intercept the consumable guide 16.

The consumable guiding device 16 is further provided with a first notch (not shown) and a second notch 1621 penetrating through the consumable guiding device 16, and the first notch and the second notch 1621 are used for the consumable detecting device to detect the specific position of the consumable in the consumable pushing device 10.

The first notch is communicated with the feeding channel 161 and is positioned at one side of the broken hole 1611 away from the discharging channel 162; wherein, a first notch may be formed at a position corresponding to each feeding channel 161, so as to detect the position of the consumable in each feeding channel 161. It will be appreciated that each feed channel 161 may be correspondingly provided with a plurality of first notches, if desired.

The second notch 1621 communicates with the discharge channel 162; the discharging channel 162 may be provided with only one second notch 1621 at a corresponding position, so as to respectively detect the positions of consumables in the discharging channel 162. It will be appreciated that a plurality of second notches 1621 may also be provided, if desired.

Referring to fig. 3 and 6, the position detecting device 15 includes a first consumable detecting device 151 and a second consumable detecting device 152. The first consumable detection device 151 corresponds to the first notch, and the first consumable detection device 151 is configured to detect whether a consumable exists at the position of the first notch in the feed channel 161. The second consumable detection device 152 corresponds to the second notch 1621, and the second consumable detection device 152 is configured to detect whether a consumable exists at the position of the second notch 1621 in the discharge channel 162.

The number of the first consumable detecting devices 151 is plural, and the number of the first consumable detecting devices 151 corresponds to the number of the feed channels 161. The first consumable detection device 151 may be a switch-type sensor, and the first consumable detection device 151 includes a detection switch (not numbered), an elastic sheet (not numbered) connected with the detection switch, and a transition piece 1511 connected with the detection switch elastic sheet and at least partially located in the feed channel 161, the transition piece 1511 being configured to guide consumables through the feed channel 161. The transition piece 1511 may be spherical, hemispherical, or the like.

The second consumable detection device 152 may be a switch-type sensor, and the structure of the second consumable detection device 152 is consistent with that of the first consumable detection device 151, which is not described in detail herein.

Referring to fig. 7 and 8, the first driving device 13 includes a first driving member 131, a driving compression bar 132 and a plurality of driving wheel assemblies 133. The driving pressing rod 132 is in driving connection with the first driving piece 131, the driving pressing rod 132 comprises protrusions with different distances from the rotation axis, the first driving piece 131 is used for driving the pressing rod 132 to rotate, the driving wheel assembly 133 corresponds to the feeding channel 161, the second driving device 14 and the protrusions respectively, and when the driving pressing rod 132 rotates, the driving wheel assembly 133 is driven to be located at a first position or a second position; the second driving device 14 corresponds to the feed channel 161, and in the first position, the driving wheel assembly 133 and the second driving device 14 clamp the consumable in the corresponding feed channel 161, and in the second position, the driving wheel assembly 133 and the second driving device 14 unclamp the consumable in the corresponding feed channel 161.

The first driving member 131 is connected to the housing 11. The specific structure and type of the first driving member 131 are not limited, and the pressing rod 132 may be driven to rotate. The first driving member 131 may be a motor or a steering engine, etc.

The number of drive wheel assemblies 133 corresponds to the number of feed channels 161. In the present embodiment, the number of the driving wheel assemblies 133 is 2. The drive wheel assembly 133 may be disposed within the housing 11.

The driving wheel assembly 133 comprises a pressing plate 1331 and a first driving wheel 1332, the pressing plate 1331 can only rotate around a preset position, a connecting piece is arranged on one side, facing the feeding channel 161, of the pressing plate 1331, the connecting piece is rotationally connected with the first driving wheel 1332, and the pressing plate 1331 corresponds to a protrusion on the driving pressing rod 132; the first driving wheel 1332 corresponds to the second driving device 14; when the driving pressing rod 132 rotates, the driving pressing plate 1331 is positioned at the first position or the second position; in the first position, the first driving wheel 1332 and the second driving device 14 clamp the consumable in the corresponding feed channel 161, and in the second position, the first driving wheel 1332 and the second driving device 14 unclamp the consumable in the corresponding feed channel 161. In this application, the driving wheel assembly 133 has a simple structure, and can rapidly clamp the corresponding consumable materials between the first driving wheel 1332 and the second driving device 14.

The pressing plate 1331 may have a substantially plate shape, and the pressing plate 1331 is rotatably connected to the housing 11 through a rotation shaft, so that the pressing plate 1331 can rotate only around the rotation shaft position, and the pressing plate 1331 cannot move relative to the housing 11. The plurality of platens 1331 are positioned in a straight line.

The first driving wheel 1332 can rotate relative to the pressing plate 1331, so that consumable materials clamped by the first driving wheel 1332 and the second driving device 14 can be driven more smoothly. The material of the first driving wheel 1332 is not limited, and may be metal, plastic, or the like.

The driving compression bar 132 includes a rotation bar 1321 and an eccentric 1322 disposed on the rotation bar 1321, where the rotation bar 1321 is in driving connection with the first driving member 131. The rotating lever 1321 and the eccentric 1322 provided on the rotating lever 1321 are located on the side of the pressing plate 1331 near the second driving device 14.

The number of eccentric wheels 1322 corresponds to the number of driving wheel assemblies 133, and in this embodiment, the number of eccentric wheels 1322 is 2. The position of the eccentric 1322 corresponds to the position of the driving wheel assembly 133, and the eccentric 1322 is in contact with the pressing plate 1331; the eccentric direction of the different eccentric wheels 1322 is different; eccentric 1322 corresponds to platen 1331. As the rotation rod 1321 rotates, the eccentric 1322 follows the rotation rod 1321. Because the eccentric directions of the different eccentric wheels 1322 are different, the degree of the pressing of the different pressing plates 1331 contacted with the different eccentric wheels 1322 is not changed, so that the position of the first driving wheel 1332 is different, and when one first driving wheel 1332 clamps consumable materials with the second driving assembly, other first driving wheels 1332 and the second driving assembly loosen other consumable materials. Wherein, the angle of the phase difference between the eccentric directions of different eccentric wheels 1322 is larger than or equal to 45 degrees, so that the clamping degree is not easy to interfere when different driving wheel assemblies 133 clamp consumable materials.

The rotating rod 1321 is parallel to a preset position where the plurality of pressing plates 1331 can rotate. The plurality of pressure plates 1331 are rotated at the same distance from the rotating rod 1321, so that the clamping and loosening of consumable materials can be controlled more easily.

Referring to fig. 9, the second driving device 14 includes a second driving member 141, a transmission 142 and a second driving wheel 143. The transmission device 142 is respectively connected with the second driving piece 141 and the second driving wheel 143, and the second driving piece 141 drives the second driving wheel 143 to rotate through the transmission device 142. It will be appreciated that the provision of the transmission 142, i.e. the second driving member 141 is directly in driving connection with the second driving wheel 143 for directly driving the second driving wheel 143 in rotation, may be omitted.

The structure and type of the second driving member 141 are not limited, and for example, the second driving member 141 may be a motor, and particularly, a stepping motor or a servo motor. The second driving member 141 is fixedly coupled with the housing 11.

The transmission 142 is rotatably connected to the housing 11. The transmission device 142 includes a first gear 1421 and a second gear 1422, the first gear 1421 is connected to the second driving device 14, the second gear 1422 is meshed with the first gear 1421, the second driving wheel 143 is coaxially arranged with the second gear 1422, and when the second driving device 14 rotates, the first gear 1421 and the second gear 1422 are driven to rotate, and the second driving wheel 143 rotates synchronously with the second gear 1422.

The ratio of the diameters of the first gear 1421 and the second gear 1422 may be 1:4-1:2 to increase the torque of the second driving wheel 143 and increase the driving force of the consumable material.

The second driving wheel 143 corresponds to a plurality of feeding channels 161 at the same time, so that only one second driving member 141 is required to push all consumable materials of the feeding channels 161. The second driving wheel 143 also corresponds to the first driving wheel 1332. The shape of the second driving wheel 143 is not limited, in this embodiment, the second driving wheel 143 is cylindrical, and the surface of the second driving wheel 143 is rough, so as to increase the friction between the second driving wheel 143 and the consumable. It will be appreciated that the surface of the second drive wheel 143 may be provided with grooves, such as arcuate or v-grooves, corresponding to the shape of the consumable. The material of the second driving wheel 143 is not limited, and the material of the second driving wheel 143 may be metal, plastic, or the like.

Referring to fig. 2 and 10, the pressing device 12 is connected to the housing 11. The squeezing means 12 corresponds to the drive wheel assembly 133, the squeezing means 12 being adapted to give the drive wheel assembly 133 a force to grip the consumable. The pressing device 12 is located on the side of the pressing plate 1331 remote from the second driving device 14.

The pressing device 12 includes an elastic member 121 and a position adjusting assembly 122, the elastic member 121 is connected to a side of the pressing plate 1331 away from the second driving device 14, the position adjusting assembly 122 is connected to the elastic member 121, the position adjusting assembly 122 is further connected to the housing 11, and the position adjusting assembly 122 is used for adjusting a length of the elastic member 121 to adjust an elastic force of the elastic member 121. It will be appreciated that the provision of the pressing means 12 may be omitted and that by modifying the structure of the first driving means 13, clamping force can be imparted to the consumable or loosening of the consumable as required.

The specific structure of the elastic member 121 is not limited, for example, the elastic member 121 may be a spring, or other elastic member, and the material of the elastic member 121 is not limited, and the elastic member 121 may be metal, elastic cotton, or the like.

The position adjustment assembly 122 includes a stop 1221, a rotation member 1222, and a nut 1223. The limiting piece 1221 is connected with the shell 11, the limiting piece 1221 is further rotationally connected with the rotating piece 1222, the limiting piece 1221 is used for limiting the circumferential position of the rotating piece 1222, threads are arranged on the rotating piece 1222, the nut 1223 is in threaded connection with the threads, one end of the rotating piece 1222 is inserted into the spring, the nut 1223 is in contact with the spring, and when the rotating piece 1222 rotates, the position of the nut 1223 changes to adjust the length of the elastic piece 121.

The casing 11 includes a first half-shell 111 and a second half-shell 112, and the consumable propulsion device 10 further includes a fixing member, where the first half-shell 111 and the second half-shell 112 are connected to form a receiving space, and the first driving member 131 and the fixing member are located outside the receiving space and are connected to the first half-shell 111, the fixing member and the first driving member 131;

the driving compression bar 132 passes through the first half shell 111 to be connected with the first driving member 131;

the plurality of driving wheel assemblies 133 and the elastic member 121 are positioned in the accommodating space; wherein the pressing plate 1331 is rotatably connected with the first housing 11.

The second driving device 14 is connected to the first half shell 111, the second driving member 141 is located in the accommodating space, the transmission device 142 is at least partially located in the accommodating space, and the second driving wheel 143 is located in the accommodating space. The housing 11 protects or prevents dust from other devices. It will be appreciated that the provision of the housing 11 may be omitted, as long as the elements in the present application are held in a particular position.

In use, the consumable propulsion device 10, in this embodiment, is described with reference to the consumable including 2 consumable items, which are a first consumable item and a second consumable item, respectively. The driving force for advancing the consumable may be provided for the consumable advancing device 10 or may be provided for an extruder between the consumable advancing device 10 and the print head. In the present embodiment, the driving force is described as being provided by the consumable advancing device 10.

The first consumable and the second consumable are both placed in the material preparation area, that is, the first consumable detection device 151 corresponding to the feeding channel 161 where the first consumable is located can detect the first consumable, and the first consumable is located between the corresponding first driving wheel 1332 and the second driving wheel 143; the second consumable material can be detected by the first consumable material detection device 151 corresponding to the feeding channel 161 where the second consumable material is located, and the second consumable material is located between the corresponding first driving wheel 1332 and the second driving wheel 143.

The first driving member 131 drives the rotating rod 1321 to rotate, so that the rotating rod 1321 drives the eccentric wheel 1322 to rotate, the eccentric wheel 1322 corresponding to the first consumable part is at the lowest position, the eccentric wheel 1322 drives the pressing plate 1331 and the first driving wheel 1332 to move, the first driving wheel 1332 and the second driving wheel 143 clamp the first consumable part, the second driving member 141 drives the second driving wheel 143 to rotate in the first direction, and the first consumable part is driven to advance, so that the first consumable part is driven to enter the printing head.

If the tail end of the first consumable passes through the first consumable detection device 151, the signal generated by the first consumable detection device 151 changes, that is, the first consumable is about to be used, the 3D printing head is lifted to a designated position to prevent the model from being damaged by high temperature, and the second driving wheel 143 is controlled to reversely rotate, that is, rotate towards the second direction, the end of the first consumable passes through the second consumable detection device 152, the signal of the second consumable detection device 152 changes, and the second driving wheel 143 is controlled to rotate for a set number of turns, so that the second consumable exits the discharging channel 162.

And then the rotating rod 1321 and the cam are controlled to synchronously rotate by a preset angle, such as 180 degrees, the first consumable is loosened by the first driving wheel 1332 and the second driving wheel 143 corresponding to the first consumable, the second consumable is clamped by the first driving wheel 1332 and the second driving wheel 143 corresponding to the second consumable, the second driving wheel 143 is controlled to rotate in the first direction so as to enable the second consumable to advance, the second consumable passes through the second consumable detection device 152, the signal of the second consumable detection device 152 changes, the second consumable is controlled to move by a set distance, the second consumable enters the printing head, and printing is continued by the printing head, so that the material feeding of the second consumable is realized.

It can be understood that if the first consumable is not used, if the consumable needs to be replaced, the usage mode is the same as the usage mode of the first consumable after the first consumable passes through the first consumable detecting device 151 and the signal generated by the first consumable detecting device 151 is changed, i.e. the first consumable is about to be used up ", so that the replacement of the unused consumable is realized, and 2 consumables or 2 colors of printing can be performed by one model.

The application also provides a three-dimensional printing device, which comprises the consumable propulsion device 10. The specific structure of the stereoscopic printing apparatus is not limited, and may be an existing or future developed stereoscopic printing apparatus. The stereoscopic printing apparatus has all effects of the consumable advancing apparatus 10.

It should be noted that, the various optional implementations described in the embodiments of the present application may be implemented in combination with each other, or may be implemented separately, which is not limited to the embodiments of the present application.

While the foregoing is directed to the preferred embodiments of the present application, it should be noted that modifications and adaptations to those embodiments may be made by one of ordinary skill in the art without departing from the principles set forth herein and are intended to be within the scope of the present application.

Claims (9)

1. A consumable advancing apparatus for advancing a consumable, the consumable advancing apparatus comprising:

the consumable guide device is provided with a plurality of feeding channels and discharging channels which are mutually communicated;

a first driving member;

the driving press rod is in driving connection with the first driving piece, the driving press rod comprises protrusions with different distances from the rotation axis, and the first driving piece is used for driving the driving press rod to rotate;

the driving wheel assemblies are respectively corresponding to the feeding channel and the protrusions, and when the driving pressing rod rotates, the driving wheel assemblies are driven to be located at a first position or a second position;

the second driving device corresponds to the feeding channel and is used for driving consumable materials to advance, when the first driving device is in the first position, the driving wheel assembly and the second driving device clamp the consumable materials in the corresponding feeding channel, and when the second driving device is in the second position, the driving wheel assembly and the second driving device loosen the consumable materials in the corresponding feeding channel;

the consumable guiding device is provided with a broken hole penetrating through the consumable guiding device, the broken hole is communicated with the feeding channel, the broken hole corresponds to the driving wheel assembly and the second driving device respectively, and the broken hole is used for clamping and clamping the corresponding consumable in the feeding channel by the driving wheel assembly and the second driving device.

2. The consumable advancing device according to claim 1, wherein the driving wheel assembly comprises a pressing plate and a first driving wheel, the pressing plate can only rotate around a preset position, a connecting piece is arranged on one side of the pressing plate, which faces the feeding channel, and is in rotational connection with the first driving wheel, and the pressing plate corresponds to a protrusion on the driving pressing rod;

when the driving pressing rod rotates, the pressing plate is driven to be located at a first position or a second position;

and when the first driving wheel and the second driving device are at the first position, the first driving wheel and the second driving device clamp the corresponding consumable in the feeding channel, and when the second driving wheel and the second driving device are at the second position, the first driving wheel and the second driving device loosen the corresponding consumable in the feeding channel.

3. The consumable advancing device according to claim 2, wherein the driving pressure lever comprises a rotating lever and eccentric wheels arranged on the rotating lever, the rotating lever is in driving connection with the first driving piece, the number of the eccentric wheels corresponds to the number of the driving wheel assemblies, the positions of the eccentric wheels correspond to the positions of the driving wheel assemblies, and the eccentric directions of the eccentric wheels are different; the eccentric wheel corresponds to the pressing plate;

the angle of the phase difference between the eccentric directions of different eccentric wheels is larger than or equal to 45 degrees.

4. The consumable advancing device according to claim 1, wherein the second driving means includes a second driving member and a second driving wheel, the second driving member being in driving connection with the second driving wheel, the second driving wheel simultaneously corresponding to a plurality of feed channels.

5. The consumable advancing device according to claim 4, wherein the second driving means further comprises a transmission device, the transmission device is respectively connected with the second driving member and the second driving wheel, and the second driving member drives the second driving wheel to rotate through the transmission device;

the transmission device comprises a first gear and a second gear, the first gear is connected with the second driving device, the second gear is meshed with the first gear, the second driving wheel is coaxially arranged with the second gear, the first gear and the second gear are driven to rotate when the second driving device rotates, and the second driving wheel and the second gear synchronously rotate;

the diameter ratio of the first gear to the second gear is 1:4-1:2.

6. The consumable propulsion device according to claim 1, wherein the consumable guiding device is further provided with a first notch penetrating through the consumable guiding device, the first notch is communicated with the feeding channel, and the first notch is located at one side of the broken hole away from the discharging channel;

the consumable pushing equipment further comprises a first consumable detection device, wherein the first consumable detection device corresponds to the first notch, and the first consumable detection device is used for detecting whether consumable exists at the position of the first notch in the feeding channel;

the consumable guiding device is also provided with a second notch penetrating through the consumable guiding device, and the second notch is communicated with the discharging channel;

the consumable propulsion equipment further comprises a second consumable detection device, the second consumable detection device corresponds to the second notch, and the second consumable detection device is used for detecting whether consumable exists at the position of the second notch in the discharging channel.

7. A consumable advancing device according to claim 3, further comprising a squeezing means corresponding to the drive wheel assembly for applying a force to the drive wheel assembly for clamping the consumable;

the extrusion device comprises an elastic piece and a position adjusting assembly, wherein the elastic piece is connected with one side, far away from the second driving device, of the pressing plate, the position adjusting assembly is connected with the elastic piece, and the position adjusting assembly is used for adjusting the length of the elastic piece so as to adjust the elastic force of the elastic piece;

the elastic piece is a spring, the position adjustment assembly comprises a limiting piece, a rotating piece and a nut, the limiting piece is rotationally connected with the rotating piece, the limiting piece is used for limiting the circumferential position of the rotating piece, threads are arranged on the rotating piece, the nut is in threaded connection with the threads, one end of the rotating piece is inserted into the spring, the nut is in butt joint with the spring, and when the rotating piece rotates, the position of the nut changes to adjust the length of the elastic piece.

8. The consumable advancing device according to claim 2, further comprising a housing, the housing being connected to the first driving member, the consumable guiding means, respectively, the platen being rotatably connected to the housing;

the shell comprises a first half shell and a second half shell, the consumable propulsion equipment further comprises a fixing piece, the first half shell and the second half shell are connected to form a containing space, and the first driving piece and the fixing piece are located outside the containing space and are connected with the first half shell, the fixing piece and the first driving piece;

the driving compression bar passes through the first half shell and is connected with the first driving piece;

the plurality of driving wheel assemblies are positioned in the accommodating space;

the second driving device is connected with the first half shell.

9. A stereoscopic printing device, characterized by comprising a consumable advancing device according to any one of claims 1 to 8.