Consumable conveying device, material box and 3D printer

Abstract

The utility model discloses a consumable conveying device, a material box and a 3D (three-dimensional) printer, which can realize the movement of different material trays to feed and discharge materials mainly through the position switching of a gear shifting mechanism, so that the structure is simpler. According to the main technical scheme, the consumable conveying device comprises a tray transmission mechanism used for driving trays at the corresponding positions to rotate; the gear shifting mechanism comprises at least two gear shifting positions; the conveying driving assembly is used for providing feeding power; the switching driving assembly is used for driving the gear shifting mechanism to be switched between different gear shifting positions; when the gear shifting mechanism is located at the first gear shifting position, the gear shifting mechanism is in transmission connection with the conveying driving assembly and the material disc transmission mechanism corresponding to the first position so as to drive the material disc at the first position to move. When the gear shifting mechanism is located at the second gear shifting position, the gear shifting mechanism is in transmission connection with the conveying driving assembly and the material disc transmission mechanism at the second position so as to drive the material disc corresponding to the second position to move. The feeding device is mainly used for feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a consumable conveying device, a material box and a 3D printer. Background Art

[0002] A 3D printer, also known as a three-dimensional 3D printer (3DP), is a kind of additive manufacturing technology. The consumable is in filament form, wound on a consumable disk, and under the action of an extruder, it is extruded and fed towards a nozzle. The consumable melts inside the nozzle and then is sprayed onto a printing platform. Through the relative movement of the nozzle and the printing platform, spraying is achieved according to the profile of the model slice, and layer by layer stacking is carried out in sequence to achieve three-dimensional shaping. The color and material of the model are determined by the consumable. To meet the diverse needs of printed models, multiple different consumables can be used for printing simultaneously.

[0003] In the prior art, to achieve multi-consumable printing, multiple feeding channels are provided on the nozzle and connected to a single discharging channel, and an extruder is separately provided for each consumable disk. When switching from one consumable to another, it is necessary to start the extruder corresponding to the original consumable, drive the original consumable to retreat, so that the original consumable exits the discharging channel and returns to the end located at the feeding channel, and then start the extruder corresponding to the new consumable to push the new consumable to the feeding channel to achieve material change. Each consumable corresponds to a separate extruder, which occupies a large space, has a redundant structure, and is inconvenient to install. When the material change is frequent, it is necessary to switch the control of the extruder, resulting in a cumbersome control process. Summary of the Utility Model

[0004] In view of this, to solve at least one of the above technical problems, the utility model provides a consumable conveying device, a material box and a 3D printer.

[0005] To achieve the above object, the utility model mainly provides the following technical solutions:

[0006] On the one hand, an embodiment of the utility model provides a consumable conveying device, including:

[0007] A material disk transmission mechanism for driving the material disk at the corresponding position to rotate;

[0008] A shifting mechanism including at least two shifting positions;

[0009] A conveying driving component for providing feeding power;

[0010] A switching driving component for driving the shifting mechanism to switch between different shifting positions;

[0011] When the shifting mechanism is in the first shifting position, it is respectively in transmission connection with the conveying driving component and the material disk transmission mechanism corresponding to the first position to drive the material disk corresponding to the first position to move;

[0012] When the shift mechanism is in the second shift position, it is respectively in transmission connection with the conveying drive assembly and the tray drive mechanism corresponding to the second position to drive the movement of the tray corresponding to the second position.

[0013] On the other hand, the present utility model also provides a cartridge, including the consumable conveying device of any one of the foregoing, and

[0014] a main housing, the consumable conveying device is connected to the main housing, and the main housing is also used to connect the tray.

[0015] On yet another aspect, the present utility model also provides a 3D printer, including the consumable conveying device of any one of the foregoing, or including the cartridge of any one of the foregoing.

[0016] A consumable conveying device, a cartridge and a 3D printer provided by the embodiments of the present utility model mainly switch between different shift positions by moving the shift mechanism, so as to drive the movement of the trays corresponding to different positions, and can realize feeding or discharging. There is no need to separately control the extrusion mechanisms corresponding to each tray, which greatly reduces the control burden. Moreover, the shift mechanism is arranged in parallel with the conveying drive assembly, replacing the multiple originally independently arranged extruders, making the structure more concise and avoiding the problems of structural redundancy and installation difficulties. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a cartridge provided by an embodiment of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of a partial structure of a cartridge provided by an embodiment of the present utility model;

[0019] Figure 3 It is an exploded structural diagram of a partial structure of a cartridge provided by an embodiment of the present utility model;

[0020] Figure 4 It is a schematic structural diagram of another partial structure of a cartridge provided by an embodiment of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of a cartridge provided by an embodiment of the present utility model from a first perspective when in the empty position;

[0022] Figure 6 It is a schematic structural diagram of a shift mechanism from a first perspective provided by an embodiment of the present utility model;

[0023] Figure 7 It is a schematic structural diagram of another shift mechanism provided by an embodiment of the present utility model;

[0024] Figure 8Schematic structural diagram of a shift mechanism provided by an embodiment of the present utility model from a second perspective;

[0025] Figure 9 Exploded structural diagram of a shift mechanism provided by an embodiment of the present utility model;

[0026] Figure 10 Schematic structural diagram of a feeding component provided by an embodiment of the present utility model from a first perspective;

[0027] Figure 11 Schematic structural diagram of a feeding component provided by an embodiment of the present utility model from a second perspective;

[0028] Figure 12 Schematic structural diagram of a driving roller of a material tray provided by an embodiment of the present utility model;

[0029] Figure 13 Exploded structural diagram of a driving roller of a material tray provided by an embodiment of the present utility model;

[0030] Figure 14 Schematic structural diagram of a conveying drive assembly provided by an embodiment of the present utility model;

[0031] Figure 15 Schematic structural diagram of a material box at the feeding position provided by an embodiment of the present utility model;

[0032] Figure 16 For Figure 15 Partial enlarged view of the material box shown in the C area;

[0033] Figure 17 Schematic structural diagram of a material box at the discharging position provided by an embodiment of the present utility model;

[0034] Figure 18 For Figure 17 Partial enlarged view of the material box shown in the D area;

[0035] Figure 19 Schematic cross-sectional structural diagram of a material box provided by an embodiment of the present utility model;

[0036] Figure 20 Schematic structural diagram of a third partial structure of a material box provided by an embodiment of the present utility model;

[0037] Figure 21 For Figure 20 Partial enlarged view of the material box shown in the E area;

[0038] Figure 22 Schematic structural diagram of a partial structure of another material box provided by an embodiment of the present utility model;

[0039] Figure 23 Another structural schematic diagram of a cartridge in the feeding position provided by an embodiment of the present invention;

[0040] Figure 24 For Figure 23 A partial enlarged view of the cartridge shown in area G;

[0041] Figure 25 Another structural schematic diagram of a cartridge in the discharging position provided by an embodiment of the present invention;

[0042] Figure 26 For Figure 25 A partial enlarged view of the cartridge shown in area F;

[0043] Figure 27 Another structural schematic diagram of a shifting mechanism provided by an embodiment of the present invention. Detailed implementation manners

[0044] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific optional implementation manners, structures, features, and effects of the consumable conveying device according to the present invention as follows.

[0045] On the one hand, as Figures 1 - 27 shown, an embodiment of the present invention provides a consumable conveying device for connecting a plurality of trays 10. The consumable conveying device 1000 includes:

[0046] A tray drive mechanism 500 for driving the trays at corresponding positions to rotate;

[0047] A shifting mechanism 100 including at least two shifting positions;

[0048] A conveying drive assembly for providing feeding power;

[0049] A switching drive assembly 200 for driving the shifting mechanism to switch between different shifting positions;

[0050] When the shifting mechanism is in the first shifting position, it is respectively in transmission connection with the conveying drive assembly and the tray drive mechanism 500 corresponding to the first position to drive the tray 10 corresponding to the first position to move;

[0051] When the shifting mechanism is in the second shifting position, it is respectively in transmission connection with the conveying drive assembly and the tray drive mechanism 500 corresponding to the second position to drive the tray 10 corresponding to the second position to move.

[0052] The tray 10 generally includes an intermediate roller and two baffles. The baffles are circular plate-like structures. The two baffles are arranged in parallel and spaced apart. The intermediate roller is located between the two baffles and at the center of the baffles. The intermediate rollers are connected to the two baffles respectively, thereby forming an I-shaped tray structure. The intermediate roller is used to wind the filamentary consumables, and the baffles are used to confine the consumables in the space enclosed by the baffles and the intermediate rollers. During the process of withdrawing the consumables, the consumables will be drawn out of the nozzle and move toward the tray 10. If the tray 10 does not move, the consumables will accumulate between the consumable feeding and withdrawing device and the tray 10. In order to avoid problems such as the consumables falling or bending damage caused by the accumulation of consumables, the tray 10 can be rotated during the withdrawal process through the consumables conveying device to rewind the pushed consumables. The tray transmission mechanism 500 can be rotatably connected to the main body of the 3D printer and can be in contact with the tray 10. Alternatively, in an optional embodiment including a bracket 600, the tray transmission mechanism 500 is rotatably connected to the bracket, such as being rotatably connected through a bearing 900. The material tray transmission mechanism 500 extends in the axial direction of the middle roller of the material tray 10, and abuts against the edge of the baffle plate of the material tray 10 at the corresponding position. In some optional embodiments, the movement of the material tray can also be used for feeding, that is, the first shift position and the second shift position are feeding shift positions, such as driving the rotation of the material tray to gradually release the consumables on the material tray, and then the additional extrusion device can be used for feeding, avoiding the laborious pulling of the consumables by the consumable extruder. Alternatively, in some optional embodiments, the material can be directly fed to the print head by rotating the material tray without providing an extruder.

[0053] In an alternative embodiment, the tray drive mechanism 500 is disposed opposite to the shift mechanism 100. The shift mechanism 100 is located between the tray drive mechanism 500 and the conveying drive assembly, such that the shift mechanism 100 is closer to both the drive assembly and the tray drive mechanism 500, making it easier to be drivingly connected to the conveying drive assembly and the tray drive mechanism 500, and thus making the overall structure compact. In an alternative embodiment, the shift mechanism 100 includes a linkage member and at least two feeding components 110. The at least two feeding components 110 are connected to the linkage member, and the feeding components 110 correspond to the trays 10. The first shift position includes a discharging shift position, and the second shift position includes a discharging shift position. The position of the feeding component 110 includes a discharging position. When the shift mechanism 100 is in the discharging shift position, at least one of the at least two feeding components 110 is in the discharging position. When the feeding component 110 is in the discharging position, the feeding component 110 is drivingly connected to the conveying drive assembly and the corresponding tray drive mechanism 500. The aforementioned first shift position and second shift position are both discharging shift positions of the shift mechanism, and the first shift position and the second shift position are two different discharging shift positions. It can be understood that the number of discharging shift positions is the same as the number of trays 10, not limited to two. The first shift position and the second shift position are any two discharging shift positions. The linkage member of the shift mechanism 100 can be of various types, as long as it can drive the at least two feeding components 110 to move synchronously. The synchronous movement mode can be horizontal linear movement, inclined movement, rotation, or revolution, etc. The feeding component 110 is configured such that it will only interact with the conveying drive assembly and the tray drive mechanism 500 when it reaches the discharging position, and then conduct the power of the conveying drive assembly to exert a pushing force on the tray drive mechanism 500 to drive the tray 10 to rotate. When it does not reach the discharging position, it will not interact with at least one of the conveying drive assembly or the tray drive mechanism 500. When different feeding components 110 are in the discharging position, the overall position of the corresponding shift mechanism 100 is different, that is, multiple feeding components 110 correspond to multiple discharging shift positions, or in other words, when different feeding components 110 are in the discharging position, the shift mechanism 100 as a whole is in different discharging shift positions. Or, when the shift mechanism 100 is in a discharging shift position, only one feeding component 110 is in the discharging position. The switching of the discharging shift position can be of various types according to the overall movement mode of the shift mechanism 100. For example, if the shift mechanism 100 moves horizontally as described above, the switching drive assembly 200 is used to drive the shift mechanism 100 to move horizontally and move between multiple shift positions. Or, if the shift mechanism 100 rotates as described above, the switching drive assembly 200 is used to drive the shift mechanism 100 to rotate and move between multiple shift positions.

[0054] The conveying drive assembly is used to interact with the feeding assembly 110 in the material discharging position to transmit power to the tray drive mechanism 500, and then the consumable is rewound. Since any material discharging shift position only corresponds to a single feeding assembly 110 in the material discharging position, the rotational material discharging of any one of the multiple trays 10 can be realized, and it is only necessary to control the overall movement of the shift mechanism 100 to different material discharging shift positions. On the one hand, multiple extruders are combined into an integral whole, making the structure more compact and concise. On the other hand, the control process is also simplified. When the consumable conveying device is installed, it only needs to correspond to the tray 10, that is, the tray 10 and the tray drive mechanism 500 are placed correspondingly, and the material discharging of the specified tray 10 can be carried out through the control of the shift position of the shift mechanism 100.

[0055] Taking an alternative embodiment with four trays 10 in the figure as an example, the consumables on the four trays 10 can be the same consumables, so as to realize the material receiving after the consumables on a single tray 10 are used up. Or, the consumables on the four trays 10 are different, which can be different colors to realize the color switching during multi-color model printing, or different materials to realize the diversification of the model. The four trays 10 are arranged side by side in the axial direction of the middle roller at a specified position, so that the tray drive mechanism 500 corresponds to the tray 10 and can act on the tray 10. In an alternative embodiment where the shift mechanism 100 rotates to switch the material discharging shift position, the shift mechanism 100 extends along the axial direction of the middle roller. When the first tray 10 needs to feed or discharge materials, the position of the shift mechanism 100 is rotated to the first shift position, so that the first feeding assembly 110 corresponding to the first tray 10 is in the material discharging position. At this time, the conveying drive assembly provides power to make the first tray 10 rotate, and then the material discharging of the consumables on the first tray 10 can be realized. When the material discharging of the consumables on the first tray 10 is completed, the position of the shift mechanism 100 is rotated to the second shift position, so that the second feeding assembly 110 corresponding to the second tray 10 is in the material discharging position. At this time, the conveying drive assembly provides power to realize the material discharging of the consumables on the second tray 10. In this way, the switching of the material discharging of multiple trays 10 can be realized, and the rewinding and material discharging of any tray 10 can be realized.

[0056] A consumable conveying device, a cartridge and a 3D printer proposed in the embodiment of the present utility model mainly switch between different shift positions by moving the shift mechanism, so as to realize the movement of the trays corresponding to different positions, and can realize feeding or material discharging. There is no need to control the extrusion mechanisms corresponding to each tray separately, which greatly reduces the control burden. Moreover, the shift mechanism and the conveying drive assembly are arranged side by side, replacing the original multiple independently arranged extruders, making the structure more concise and avoiding the problems of structural redundancy and installation difficulties.

[0057] In the following optional implementation, a more specific optional implementation is described in which the linkage member is the first rotating shaft 120 and the shift mechanism 100 switches the shift position by rotating around the axis of the first rotating shaft 120 .

[0058] The shifting mechanism 100 and the conveying drive assembly can be directly connected to the main body of the 3D printer and can be rotated. Alternatively, in some optional embodiments, the consumable conveying device also includes a bracket 600, and the shifting mechanism 100 and the conveying drive assembly are both rotatably connected to the bracket 600. The bracket 600 can be fixed to the main body of the 3D printer, or an additional supporting structure is used to support the bracket 600, or the bracket 600 can be placed directly on the operating table. The consumable conveying device also includes a plurality of bearings 900, and the shifting mechanism 100 and the conveying drive assembly are respectively rotatably connected to the bracket 600 through at least one bearing 900. A plurality of bearings can be arranged according to the contact position between the bracket 600 and the shifting mechanism 100 and the conveying drive assembly, such as respectively arranging a bearing 900 at both ends of the axial direction of the shifting mechanism 100 and respectively arranging a bearing 900 at both ends of the conveying drive assembly. In order to stabilize the axial position of the shifting mechanism 100 and the conveying drive assembly, such as Figure 6 and Figure 14 As shown, the bearing 900 may also include a flange bearing, and a flange bearing insertion opening that matches the shape of the flange bearing is provided at a position corresponding to the flange bearing on the bracket 600. The interaction between the flange bearing upper retaining edge and the flange bearing insertion opening may realize axial positioning of the shift mechanism 100 and the conveying drive assembly to avoid axial shaking. The bracket 600 may be open, supporting the shift mechanism 100 and the conveying drive assembly only at the bottom, or, as Figure 1 As shown, the bracket 600 can be closed, and the bracket 600 includes an inner cavity, and the shift mechanism 100 and the conveying drive assembly are both located in the inner cavity, and a through hole is provided on the bracket 600 for consumables to enter and exit.

[0059] In an optional embodiment, the feeding assembly 110 includes a switching block 112 and a transmission assembly 111, the switching block 112 is connected to the first rotating shaft 120, the transmission assembly 111 is connected to the switching block 112 and protrudes from the circumferential side wall of the switching block 112, and the transmission assemblies 111 on at least two feeding assemblies 110 are located at the axial projection position of the first rotating shaft 120. When the feeding assembly 110 is in the material withdrawal position, the transmission assembly 111 is in transmission connection with the conveying drive assembly and the material tray transmission mechanism 500.

[0060] During the material return process, the conveying drive assembly rotates, and the transmission assembly 111 transmits the rotation of the conveying drive assembly to the tray transmission mechanism 500, enabling the tray transmission mechanism 500 to be linked and drivingly connected to the conveying drive assembly, and then the tray 10 rotates. The switching drive assembly 200 is used to drive the first rotating shaft 120 to drive a plurality of feeding assemblies 110 to rotate synchronously around the axis of the first rotating shaft 120. Since the projection positions of the transmission assemblies 111 on the plurality of feeding assemblies 110 in the axial direction of the first rotating shaft 120 are different, different transmission assemblies 111 are enabled to interact with the conveying drive assembly and the tray transmission mechanism 500.

[0061] The switching block 112 is mainly used to support the transmission assembly 111. In some alternative embodiments, the switching block 112 may be absent, and only the transmission assembly 111 protrudes from the circumferential side wall of the first rotating shaft 120. Or, the switching block 112 and the first rotating shaft 120 are of an integral structure, which will increase the processing difficulty of the first rotating shaft 120. Using the switching block 112 will make the processing more convenient. The switching block 112 is fixed both circumferentially and axially to the first rotating shaft 120. As Figure 27 shown, the shifting mechanism 100 further includes a plurality of limiting blocks 140. The limiting blocks 140 are connected to the linkage member and are used to limit the feeding assembly 110. The feeding assembly 110 realizes axial and circumferential limits through the limiting blocks provided on both sides. Or, as Figure 9 shown, the feeding assembly 110 includes a switching block 112. The linkage member is provided with a limiting bayonet 121. The inner wall of the through hole of the switching block 112 is provided with a limiting card surface. The switching block 112 is connected to the linkage member, and the limiting bayonet 121 and the limiting card surface interact to fix the feeding assembly 110 and the linkage member. Due to the different projection positions of the transmission assembly 111 in the axial direction corresponding to the first rotating shaft 120, to limit the circumferential position, the limiting bayonet 121 is located at different positions in the circumferential direction of the first rotating shaft 120. In addition, for the convenience of installing the feeding assembly 110, the feeding assembly 110 further includes a plug-in member 116. The plug-in member 116 is connected to the switching block 112, and the plug-in members 116 of at least two adjacent feeding assemblies 110 are connected to each other.

[0062] Taking four feeding assemblies 110 as an example, the four feeding assemblies 110 are divided into two groups. The plug-in members 116 that can be inserted into each other are respectively provided on the two feeding assemblies 110 in one group. The plug-in member 116 can be a plug or a socket. To assist in determining the circumferential positions of the plurality of feeding assemblies 110, the plug-in member 116 is arranged such that it can be inserted into each other only when the circumferential positions of the adjacent feeding assemblies 110 are correct, which can be achieved by different shapes of the plug and the socket, aiming to assist in installation.

[0063] The material feeding assembly 110 may have only a single position, i.e., the material discharging position. Alternatively, in some alternative embodiments, the consumable conveying device further has a feeding function. When the shifting mechanism is in the third shifting position, the shifting mechanism cooperates with the conveying driving assembly to clamp the consumable at the first position, so as to move the consumable at the first position. When the shifting mechanism is in the fourth shifting position, the shifting mechanism cooperates with the conveying driving assembly to clamp the consumable at the second position, so as to move the consumable at the second position.

[0064] In an alternative embodiment, the third shifting position includes a feeding shifting position, the fourth shifting position includes a feeding shifting position, and the position of the material feeding assembly 110 further includes a feeding position. When the shifting mechanism 100 is in the feeding shifting position, at least one of the at least two material feeding assemblies 110 is in the feeding position. When the material feeding assembly 110 is in the feeding position, the material feeding assembly 110 cooperates with the conveying driving assembly to squeeze the consumable of the corresponding material tray 10, so as to push the consumable to feed or discharge when the conveying driving assembly rotates, and the transmission assembly 111 is disengaged from at least one of the conveying driving assembly and the material tray transmission mechanism 500. The above-mentioned third shifting position and fourth shifting position are both the feeding shifting positions of the shifting mechanism, and the third shifting position and the fourth shifting position are different feeding shifting positions. It can be understood that the number of feeding shifting positions is the same as the number of material trays 10, and the number of feeding shifting positions is not limited to two. The third shifting position and the fourth shifting position can be any two feeding shifting positions. In one embodiment, the transmission assembly 111 is structurally separated from the conveying driving assembly, so that the transmission therebetween is disengaged, and the power of the conveying driving assembly cannot be transmitted to the material tray transmission mechanism 500 through the transmission assembly 11; or, the transmission assembly 111 is structurally separated from the material tray transmission mechanism 500, so that the transmission therebetween is disengaged, and the power of the conveying driving assembly cannot be transmitted to the material tray transmission mechanism 500 through the transmission assembly 11; or, the transmission assembly 111 is structurally separated from both the conveying driving assembly and the material tray transmission mechanism 500, so that the power of the conveying driving assembly cannot be transmitted to the material tray transmission mechanism 500 through the transmission assembly 111. In another embodiment, the disengagement of the transmission assembly 111 from the conveying driving assembly may be due to the inability to transmit power therebetween, resulting in the power separation between the transmission assembly 111 and the conveying driving assembly, rather than the physical separation therebetween; and / or, the disengagement of the transmission assembly 111 from the material tray transmission mechanism 500 may be due to the inability to transmit power therebetween, resulting in the power separation between the transmission assembly 111 and the material tray transmission mechanism 500, rather than the physical separation therebetween.

[0065] The feeding position and the discharging position correspond to different shifting positions of the overall shifting mechanism 100. That is, the sum of the discharging shifting position and the feeding shifting position is twice the number of the feeding components 110. By moving the overall shifting mechanism 100, the feeding component 110 can be switched to the feeding position to cooperate with the conveying drive component to extrude the consumable for feeding. Or, the feeding component 110 can be switched to the discharging position to perform power transmission between the conveying drive component and the tray transmission mechanism 500, and then drive the tray 10 to rotate for discharging.

[0066] In an alternative embodiment, the feeding component 110 further includes an acting component 113. The acting component 113 is connected to the switching block 112 and protrudes from the circumferential side wall of the switching block 112. The acting components 113 on multiple feeding components 110 correspond to different projection positions in the axial direction of the first rotating shaft 120. The acting component 113 is used to cooperate with the conveying drive component to extrude the consumable.

[0067] It should be noted that when the feeding component 110 is in the discharging position, the feeding component 110 can cooperate with the conveying drive component to extrude the consumable corresponding to the tray 10, so as to push the consumable to discharge when the conveying drive component rotates. That is, it realizes simultaneous extrusion and pushing of the material and the rewinding of the tray 10. Or, it can also be that when the feeding component 110 is in the discharging position, there is a gap for the consumable to pass through between the feeding component 110 and the conveying drive component, that is, it does not extrude and discharge, and only relies on the rotation of the tray 10 through the consumable to discharge. More specific embodiments will be described in the following text.

[0068] The following provides two specific alternative embodiments of the transmission component 111 and two acting components 113. Among them, any one of the transmission components 111 and any one of the acting components 113 can be combined with each other.

[0069] In an alternative embodiment, in the alternative embodiment where the feeding component 110 includes the first acting component 113 and the first transmission component 111, as Figures 15 - 18 shown, the first transmission component 111 includes a first transmission member, a second transmission member and an intermediate transmission member. The first transmission member, the second transmission member and the intermediate transmission member are all rotatably connected to the switching block 112, which can be rotatably connected through bearings. The intermediate transmission member is located between the first transmission member and the second transmission member and is respectively in transmission connection with the first transmission member and the second transmission member. The first transmission member and the second transmission member respectively correspond to different positions in the axial direction of the first rotating shaft 120, and the first transmission member and the second transmission member correspond to different projection positions in the axial direction of the first rotating shaft 120. When the feeding component 110 is in the feeding position, the first transmission member and the second transmission member are disengaged from the transmission connection with the conveying drive component. When the feeding component 110 is in the discharging position, the second transmission member is in transmission connection with the conveying drive component, and the first transmission member is in transmission connection with the tray transmission mechanism 500.

[0070] The first transmission member, the second transmission member, and the intermediate transmission member can all be gears, and are connected by meshing for transmission. The angle formed by the first transmission members of two adjacent feeding assemblies 110 is related to the positions of the tray transmission mechanism 500 and the conveying drive assembly. For example, if the tray transmission mechanism 500 and the conveying drive assembly are respectively located on the radial two sides of the shifting mechanism 100, the circumferential angle between the first transmission members of two adjacent first transmission members corresponding to the first rotating shaft 120 is less than or equal to the quotient of 180 degrees divided by the number of trays 10. In the optional embodiment where the aforementioned feeding assembly 110 is four, as Figure 11 shown, the angle α between the first transmission members of two adjacent feeding assemblies 110 can be 45 degrees, 40 degrees, 30 degrees, etc. When it is 40 degrees, the total angle of the range where the four first transmission members are located is 120 degrees. The first transmission member and the second transmission member of the same feeding assembly 110 are located on the radial two sides of the first rotating shaft 120. The first transmission member and the second transmission member are spaced apart from each other by staggering in the axial direction of the first rotating shaft 120, so as to achieve contact with or separation from the conveying drive assembly following the rotation of the first shaft. It can be understood that the disengaging transmission between the first transmission member and the conveying drive assembly can be the connection / position separation of the two in the physical structure, or the power transmission between the two is interrupted by other means, so as to achieve the disengaging transmission between the first transmission member and the conveying drive assembly. Similarly, the disengaging transmission between the second transmission assembly and the conveying drive assembly can be the connection / position separation of the two in the physical structure, or the power transmission between the two is interrupted by other means, so as to achieve the disengaging transmission between the second transmission member and the conveying drive assembly.

[0071] The acting assembly 113 includes a first acting member and a second acting member. Both the first acting member and the second acting member are connected to the switching block 112. The first acting member corresponds to the projection position of the first transmission member in the axial direction of the first rotating shaft 120, and the second acting member corresponds to the projection position of the second transmission member in the axial direction of the first rotating shaft 120. When the feeding assembly 110 is in the feeding position, the first acting member cooperates with the conveying drive assembly to clamp the consumable at the corresponding position. When the feeding assembly 110 is in the retracting position, the second acting member cooperates with the conveying drive assembly to clamp the consumable at the corresponding position.

[0072] In accordance with the circumferential position of the first transmission member and the first action member corresponding to the first rotating shaft 120, the first action member and the first transmission member are located at the same angle in the circumferential direction of the first rotating shaft 120, or in other words, they are arranged relative to each other in the axial direction of the first rotating shaft 120, and the second action member and the second transmission member are located at the same angle in the circumferential direction of the first rotating shaft 120, or in other words, they are arranged relative to each other in the axial direction of the first rotating shaft 120. In accordance with the positional relationship between the first transmission member and the second transmission member, the angle between the circumferential directions of the first rotating shaft 120 of two adjacent first action members is less than or equal to the quotient of 180 degrees and the number of the material trays 10, and the first action member and the second action member of the same feeding assembly 110 are located on both sides of the radial direction of the first rotating shaft 120.

[0073] The first acting member and the second acting member can be bearings, and the side wall in contact with the consumables is provided with an annular recess adapted to the shape of the outer wall of the consumables, thereby preventing the consumables from laterally escaping from between the first acting member and the conveying drive assembly or the second acting member and the conveying drive assembly.

[0074] Each time the material is unloaded, the shifting mechanism 100 is driven to rotate 180 degrees, and the first acting member and the conveying drive assembly are switched to the second acting member and the conveying drive assembly. After the material is unloaded, the shifting mechanism 100 is driven to rotate 140 degrees, so that the first acting member corresponding to an adjacent tray area cooperates with the conveying drive assembly to extrude the consumables, or rotates to other corresponding angles, so that the first acting member required by any tray area cooperates with the conveying drive assembly to extrude the consumables. The shifting mechanism corresponding to the same tray area rotates 180 degrees each time the material is fed and unloaded, so that the control is simple and the logic is more concise.

[0075] like Figure 15 and Figure 16 As shown, in the feeding position, the first transmission member does not contact the action point of the conveying drive assembly, and the first action member cooperates with the conveying drive assembly to extrude the consumables, and the second transmission member is connected to the tray transmission mechanism 500. When feeding, the conveying drive assembly rotates, the first action member rotates, pulls the consumables, and causes the tray 10 to rotate, and then friction drives the tray transmission mechanism 500 to rotate, and the first transmission member, the second transmission member and the intermediate transmission member are all idle. Figure 17 and Figure 18As shown, when in the material discharging position, the first transmission member rotates to be in driving connection with the material tray transmission mechanism 500. Since the axial position of the second transmission member corresponds to the acting point on the conveying driving assembly, the second transmission member will be in driving connection with the conveying driving assembly. The second acting member rotates to cooperate with the conveying driving assembly to extrude the consumable, and the first acting member corresponds to the material tray transmission mechanism 500. When discharging the material, the conveying driving assembly rotates, the second acting member rotates, and the consumable is retracted. The conveying driving assembly is sequentially transmitted through the second transmission member, the intermediate transmission member and the first transmission member to drive the material tray transmission mechanism 500 to rotate, and then frictionally drives the material tray 10 to rotate, so as to perform the rewinding of the retracted consumable.

[0076] In an alternative embodiment, in the alternative embodiment where the feeding assembly 110 includes a second acting assembly 113 and a second transmission assembly 111, when in the feeding position, the acting assembly 113 needs to cooperate with the conveying driving assembly, and when in the material discharging position, the acting assembly 113 may not cooperate with the conveying driving assembly, and the consumable is only retracted by the rotation of the material tray 10. Specifically:

[0077] As Figures 22 - 27 shown, the transmission assembly 111 includes a first transmission member and a second transmission member. Both the first transmission member and the second transmission member are rotatably connected to the switching block 112. The first transmission member includes a small gear and a large gear, and the small gear is in driving connection with the second transmission member. The large gear is coaxially arranged with the first rotating shaft 120 and is in driving connection with the material tray transmission mechanism 500. When the feeding assembly 110 is in the feeding position, the second transmission member is disengaged from the conveying driving assembly. When the feeding assembly 110 is in the material discharging position, the second transmission member is in driving connection with the conveying driving assembly.

[0078] Both the first transmission member and the second transmission member are gears and are in driving connection through meshing. The large gear is always in driving connection with the material tray transmission mechanism 500, and the second transmission member realizes the contact or disengagement with the conveying driving assembly.

[0079] The acting assembly 113 includes a first acting member. The first acting member corresponds to different projection positions of the second transmission member on the axial direction of the first rotating shaft 120, and the first acting member is connected to the switching block 112. When the feeding assembly 110 is in the feeding position, the first acting member cooperates with the conveying driving assembly to clamp the consumable at the corresponding position. When the feeding assembly 110 is in the material discharging position, the switching block 112 faces the conveying driving assembly, and the consumable is movably connected between the switching block 112 and the conveying driving assembly.

[0080] The first acting member can be a bearing, and an annular depression adapted to the outer wall shape of the consumable is provided on the side wall for contacting the consumable, so as to prevent the consumable from laterally slipping out between the first acting member and the conveying driving assembly or between the second acting member and the conveying driving assembly.

[0081] As Figure 23 andFigure 24 As shown, when in the feeding position, the first transmission member does not contact the acting point of the conveying drive assembly, while the first acting member cooperates with the conveying drive assembly to extrude the consumable. Due to the circumferential position deviation from the first acting member, the second transmission member will be idle. During feeding, the conveying drive assembly rotates, the first acting member rotates, pulling the consumable, causing the material tray 10 to rotate, and then frictionally driving the material tray transmission mechanism 500 to rotate, and the first transmission member idles. As Figure 25 and Figure 26 shown, when in the material withdrawal position, the second transmission member rotates to correspond to the acting point on the conveying drive assembly and will be in transmission connection with the conveying drive assembly, while the first acting member rotates away from the conveying drive assembly, and the side wall of the switching block 112 faces the conveying drive assembly. During material withdrawal, the conveying drive assembly rotates, and the conveying drive assembly drives the material tray transmission mechanism 500 to rotate through the second transmission member and the first transmission member in sequence, and then frictionally drives the material tray 10 to rotate back, simultaneously retracting and rewinding the consumable, and the consumable will pass between the switching block 112 and the conveying drive assembly, and the switching block 112 and the conveying drive assembly will not extrude the consumable. In some alternative embodiments, the side wall of the switching block 112 is also provided with a recess circumferentially opposite to the annular recess of the first acting member, so that when the consumable is located between the switching block 112 and the conveying drive assembly, it can be prevented from axially moving on the first rotating shaft 120 under the action of the recess of the switching block 112, enabling the first acting member to accurately dock with the consumable when rotating. It should be noted that during the switching process between the feeding position and the material withdrawal position, the second transmission member will move synchronously with the switching block 112, and the second transmission member can roll on the small gear by self-rotation, that is, although the second transmission member is in tooth engagement with the small gear, it can realize rolling on the small gear without driving the small gear to rotate through self-rotation of the second transmission member, thus achieving that during the switching process between the feeding position and the material withdrawal position, the large gear does not move, and the rotation of the material tray transmission mechanism 500 will not be caused by the switching.

[0082] In an alternative embodiment, in the alternative embodiment of the feeding assembly 110 including the second acting component 113 and the first transmission component 111, the first transmission component 111 includes a first transmission member, a second transmission member, and an intermediate transmission member. The first transmission member, the second transmission member, and the intermediate transmission member are all rotatably connected to the switching block 112, which can be rotatably connected through bearings. The intermediate transmission member is located between the first transmission member and the second transmission member and is respectively in transmission connection with the first transmission member and the second transmission member. The first transmission member and the second transmission member respectively correspond to different positions in the axial direction of the first rotating shaft 120, and the first transmission member and the second transmission member correspond to different projected positions in the axial direction of the first rotating shaft 120. When the feeding assembly 110 is in the feeding position, both the first transmission member and the second transmission member are disengaged from the conveying driving assembly. When the feeding assembly 110 is in the discharging position, the second transmission member is in transmission connection with the conveying driving assembly, and the first transmission member is in transmission connection with the tray transmission mechanism 500. The acting component 113 includes a first acting member, and the first acting member is connected to the switching block 112. The first acting member, the first transmission member, and the second transmission member respectively correspond to different positions in the circumferential projection of the first rotating shaft 120. When the feeding assembly 110 is in the feeding position, the first acting member cooperates with the conveying driving assembly to clamp the consumables at the corresponding position. When the feeding assembly 110 is in the discharging position, the switching block 112 faces the conveying driving assembly, and the consumables are movably connected between the switching block 112 and the conveying driving assembly. For a detailed description of the working principle, reference can be made to the foregoing description of the second acting component 113 and the first transmission component 111, which will not be elaborated here.

[0083] It should be noted that the material tray 10 actively rewinds the consumables under the action of the material tray drive mechanism 500. The consumables will gradually wind and increase on the center roller. When the conveying drive assembly and the acting assembly 130 squeeze and push the consumable feeding speed to remain unchanged, that is, when the rotation speed of the conveying drive assembly remains unchanged, the increase in the amount of consumables on the center roller will cause a change in the speed of continuously winding the consumables, resulting in inconsistent consumable feeding and rewinding speeds. To avoid the pulling of the consumables caused by the accumulation of consumables on the center roller, the ratio of the linear speed of the contact point between the conveying drive assembly and the transmission assembly 111 to the linear speed of the contact point between the material tray drive mechanism 500 and the material tray 10 is greater than or equal to 0.2, that is, the conveying drive assembly feeds the material at a faster speed, while the winding speed of the material tray 10 is slower, avoiding the pulling caused by the increase in the winding of the consumables. The ratio of the linear speed of the contact point between the conveying drive assembly and the transmission assembly 111 to the linear speed of the contact point between the material tray drive mechanism 500 and the material tray 10 is less than or equal to 5, avoiding the accumulation of consumables caused by the too slow rewinding speed of the consumables. For example, the ratio of the linear speed of the contact point between the conveying drive assembly and the transmission assembly 111 to the linear speed of the contact point between the material tray drive mechanism 500 and the material tray 10 can be 0.2, 1, 3, or 5. The linear speed ratio can be adjusted by adjusting the outer diameter of the first friction sleeve 523 in contact with the retaining disc on the material tray drive mechanism 500, or the outer diameter of the gear of the transmission assembly, or the outer diameter of the gear of the active rotating shaft assembly.

[0084] The relative positions of the transmission assembly 111 and the acting assembly 113 in the circumferential direction of the first rotating shaft 120 can be various, and can be set according to the position of the material tray 10. For example, in an alternative embodiment where the four feeding assemblies 110 are grouped in pairs, and plug-ins 116 that can be inserted into each other are respectively provided on two feeding assemblies 110 in a group, the distance between two adjacent feeding assemblies 110 is less than a preset distance, and then the mutual insertion and limitation are realized through the plug-ins 116. As Figure 6 shown, the transmission assemblies 111 of the two feeding assemblies 110 that are inserted into each other, that is, the two acting assemblies 113 on a group of feeding assemblies 110 are located between the two transmission assemblies 111. In this alternative embodiment, the acting assembly 113 is away from the center of the material tray 10 in the width direction, which can make the consumables of two adjacent material trays 10 close to each other, facilitating the setting of the consumable guide block 700 mentioned later, and making the occupied space of the consumable guide block 700 small. Or, as Figure 7As shown, two feeding components 110 that are inserted into each other, that is, two driving components 111 on one set of feeding components 110 are located between two acting components 113. This alternative implementation makes the distance between the two acting components 113 larger, which can approach or even be equal to the distance between the centers of the corresponding two trays 10. Each acting component 113 approaches or even corresponds to the center of the tray 10 in the width direction, so that the angle between the extension direction of the consumable material extending to the acting component 113 and the orientation angle of the opening between the two retaining plates of the tray 10 is not too different, thereby avoiding the problem that the consumable material abuts against the retaining plate when there is less remaining consumable material, which affects the transmission of the consumable material.

[0085] In an alternative embodiment, the conveying drive assembly includes a driving rotating shaft assembly 300 and a power drive assembly 400. The driving rotating shaft assembly 300 is disposed opposite to the shifting mechanism 100, and the power drive assembly 400 is connected to the driving rotating shaft assembly 300 for driving the driving rotating shaft assembly 300 to rotate. The shifting mechanism is in transmission connection with the driving rotating shaft assembly 300.

[0086] As Figure 14 shown, the driving rotating shaft assembly 300 includes a third rotating shaft 310 and a plurality of pushing gears 320. The pushing gears 320 are sleeved on the third rotating shaft 310, and the pushing gears 320 are used to cooperate with the feeding component 110 to extrude the consumable material. The acting point on the driving rotating shaft assembly 300 in the foregoing alternative implementation is the pushing gear 320. The side wall of the pushing gear 320 protrudes from the third rotating shaft 310. Then, through the dislocation of the second transmission member and the first transmission member in the axial position of the first rotating shaft 120, when in the material discharging position, the second transmission member corresponds to the pushing gear 320 and is in transmission connection with the pushing gear 320. When in the feeding position, the first transmission member is axially displaced from the pushing gear 320 and is opposite to the lower third rotating shaft 310, and the first transmission member is disengaged from the pushing gear 320.

[0087] In an alternative embodiment, the feeding assembly 110 further includes an elastic component. The elastic component is connected to the switching block 112, and the acting component 113 is connected to the elastic component. The elastic component is configured to apply an elastic force to the acting component 113 that causes the acting component 113 to move radially outward of the switching block 112. The elastic component can be an integral elastic member, such as an integral foam. Alternatively, the elastic component includes an elastic arm and an elastic member. One end of the elastic arm is rotatably connected to the switching block 112, the other end of the elastic arm is connected to the acting component 113, and the elastic member is connected to the switching block 112 and the elastic arm respectively. In an alternative embodiment where the acting component 113 includes a first acting member and a second acting member, the number of elastic components is two, which are respectively connected to the first acting member and the second acting member. The elastic arm and the switching block 112 can be connected by a pin shaft so that the elastic arm can rotate freely. The elastic member can be a spring, and grooves can be respectively provided on the elastic arm and the switching block 112, and both ends of the spring are embedded in the grooves. The arrangement of the elastic component enables the first acting member and the second acting member to be pressed by the consumable, adapts to consumables of different thicknesses, and enables the consumable to be clamped, cooperating with the active rotating shaft assembly 300 to prevent the consumable from slipping.

[0088] The tray drive mechanism 500 is configured to be linked with the tray 10. In an alternative embodiment, the tray drive mechanism 500 includes a second rotating shaft 510 and a plurality of first roller assemblies. The first roller assemblies are slidably sleeved on the second rotating shaft 510, and the first roller assemblies correspond to the tray 10. The first roller assemblies are configured to abut against the tray 10 at corresponding positions. The second rotating shaft 510 is fixedly connected to the bracket 600. The first roller assemblies are linked with the tray 10 by rotating relative to the second rotating shaft 510. In an alternative embodiment, the number of tray drive mechanisms 500 is multiple. The tray drive mechanisms 500 correspond to the tray 10. The tray drive mechanism 500 includes a second rotating shaft 510 and a first roller assembly. The first roller assembly is sleeved on the second rotating shaft 510. The first roller assembly is configured to abut against the tray 10 at a corresponding position. The second rotating shaft 510 is rotatably connected to the bracket 600, such as by a bearing 900, and the first roller assembly is fixedly connected to the second rotating shaft 510.

[0089] More specifically, such as Figures 12 - 13As shown in the figure, the first roller assembly includes a first single roller 521, a toothed roller 522, and a first friction sleeve 523. The first single roller 521 and the toothed roller 522 are both sleeved on the second rotating shaft 510. The first single roller 521 and the toothed roller 522 are both sleeved with a first friction sleeve 523. The toothed roller 522 includes transmission teeth 5221, and the transmission teeth 5221 are located outside the first friction sleeve 523. The transmission teeth 5221 are used for driving connection with the transmission assembly 111. The first friction sleeves 523 on the first single roller 521 and the toothed roller 522 are used for frictionally abutting against the edges of the two retaining plates of the material tray 10 respectively. The transmission teeth 5221 are used for tooth connection with the first transmission member, and then drive the toothed roller 522 or drive the material tray transmission mechanism 500 to rotate under the drive of the first transmission member, and then drive the material tray 10 to reverse and wind back the consumables.

[0090] In an alternative embodiment, to make the position of the shifting mechanism 100 stable at any shifting position and not shake or accidentally enter other shifting positions when being pulled by an external force, the consumable conveying device further includes a limiting device. The shifting mechanism 100 further includes a shifting turntable 130. The shifting turntable 130 is coaxially connected to the first rotating shaft 120. A plurality of limiting members are provided circumferentially on the shifting turntable 130. When the shifting mechanism 100 is in different shifting positions, the corresponding limiting members interact with the limiting device to maintain the position of the feeding assembly 110.

[0091] The shifting turntable 130 can be inserted into the end of the first rotating shaft 120 in an eccentric plugging manner, and the limiting device can be connected to the bracket 600. According to different limiting devices, the limiting members can interact with the limiting device in various ways, aiming to limit the position of the shifting mechanism 100, and when switching the driving component 200 to drive the shifting mechanism 100 to rotate, the shifting mechanism 100 can offset the limiting rotation. For example, the limiting device includes a mounting seat, an elastic member, and a rolling member. The elastic member is connected to the mounting seat, and the elastic member is connected to the rolling member. The elastic member can specifically include a connecting frame and a spring. The connecting frame connects the rolling member. The rolling member can be a bearing. The rolling member is rotationally connected to the connecting frame through a pin shaft. The number of springs can be two, and the springs are respectively connected to the mounting seat and the connecting frame. Alternatively, the elastic member can also be integrated, such as a whole piece of foam. The limiting members include limiting concave surfaces 131 provided circumferentially on the shifting turntable 130. The shapes of the limiting concave surfaces 131 are adapted to the circumferential surfaces of the rolling members. The rolling members are used for bouncing under the action of the shifting turntable 130 and interacting with the limiting concave surfaces 131 to limit the position when any feeding assembly 110 is in the feeding and discharging positions. In the aforementioned alternative embodiment including four material trays 10, there are eight limiting concave surfaces 131 corresponding to the limiting concave surfaces 131, and the eight limiting concave surfaces 131 respectively correspond to the limiting positions of the four feeding assemblies 110 in the feeding position and the discharging position.

[0092] In an alternative embodiment, in addition to the aforementioned feeding shift position and the discharging shift position, the shift mechanism 100 further includes a zero position. The consumable material conveying device further includes a position switch, and the shift mechanism 100 further includes an acting head. When the shift mechanism 100 is in the zero position, the shift mechanism 100 is connected to both the conveying drive assembly and the tray transmission mechanism. Or rather, none of the plurality of feeding assemblies 110 are in the discharging position and the feeding position. The switching drive assembly 200 is further configured to drive the shift mechanism 100 to move to the zero position, and the acting head is configured to interact with the position switch when the shift mechanism 100 moves to the zero position, so that the position switch emits a zeroing signal.

[0093] When the consumable material conveying device is started and operated, first drive the shift mechanism 100 to move through the switching drive assembly 200 until a zeroing signal is received, and use the angle at this time as the zero-degree angle. Subsequently, the rotation of the feeding assembly 110 can be performed according to the angle difference between the driving assembly 111 and the acting assembly 113 on the feeding assembly 110 and the acting head in the circumferential direction of the first rotating shaft 120, so that the corresponding feeding assembly 110 is in the feeding / discharging position.

[0094] In an alternative embodiment, the shift position further includes an idle position. As Figures 5 - 6 shown, when the shift mechanism 100 is in the idle position, the shift mechanism 100 is connected to both the conveying drive assembly and the tray transmission mechanism. Or rather, none of the plurality of feeding assemblies 110 are in the discharging position and the feeding position, and the consumable materials corresponding to the plurality of feeding assemblies 110 are movably connected between the feeding assemblies 110 and the driving rotating shaft assembly 300 through the tray 10. The switching drive assembly 200 is further configured to drive the shift mechanism 100 to move to the idle position.

[0095] When the shift mechanism 100 is in the idle position, it can be considered that there is no interaction between the consumable material conveying device and the consumable material, and the consumable material can be regarded as independent and can cooperate with other mechanisms to achieve other feeding methods. When the shift mechanism 100 rotates from the zero position to the idle position, the rotation angle can be 180 degrees.

[0096] In the embodiment where there are four aforementioned feeding assemblies 110, and on the projection in the axial direction of the first rotating shaft, the included angle α between the first transmission members of two adjacent feeding assemblies 110 is 40 degrees, and the total angle of the range where the four first transmission members are located is 120 degrees. The position of the acting head in the circumferential direction of the first rotating shaft 120 is located between the first transmission member and the second transmission member adjacent in the circumferential direction of the first rotating shaft 120. The included angle between the first transmission member and the second transmission member adjacent in the circumferential direction of the first rotating shaft 120 in the circumferential direction of the first rotating shaft 120 is 60 degrees. Then the included angle between the acting head and one of the adjacent first transmission member and the second transmission member in the circumferential direction of the first rotating shaft 120 is 30 degrees. The above settings make the shift turntable 130 as Figure 10The shown limiting concave surfaces 131 are evenly distributed in the circumferential direction of the shifting turntable 130. The limiting concave surfaces 131 include eight limiting concave surfaces 131a corresponding to the feeding and discharging positions, a limiting concave surface 131b corresponding to the vacant position, and a limiting concave surface 131c corresponding to the zero position, for a total of ten limiting concave surfaces 131.

[0097] The switching drive assembly 200 can use a motor to directly drive the linkage to rotate. Alternatively, the switching drive assembly 200 includes a first drive member, a first main drive wheel, a first synchronous belt, and a first driven drive wheel 240. The first main drive wheel is connected to the output end of the first drive member, the first driven drive wheel 240 is connected to the linkage, the first synchronous belt is wound around the first main drive wheel and the first driven drive wheel 240, and the first drive member is used to drive the linkage to rotate, driving any one of the feeding assemblies 110 to move to the feeding and discharging position. Similarly, the power drive assembly 400 includes a second drive member 410, a second main drive wheel 420, a second synchronous belt 430, and a second driven drive wheel 440. The second main drive wheel 420 is connected to the output end of the second drive member 410, the second driven drive wheel 440 is connected to the active rotating shaft assembly 300, the second synchronous belt 430 is wound around the second main drive wheel 420 and the second driven drive wheel 440, and the second drive member 410 is used to drive the active rotating shaft assembly 300 to rotate to drive the consumable to move.

[0098] Both the first drive member and the second drive member 410 can be motors. The first driven drive wheel 240 can be arranged at the middle position in the axial direction of the first rotating shaft 120, and the second driven drive wheel 440 can be arranged at the middle position in the axial direction of the active rotating shaft assembly 300, realizing the drive of the intermediate drive shifting mechanism 100 and the active rotating shaft assembly 300, avoiding the large space occupied by the drive member caused by unilateral drive, and the increase in torque when the shifting mechanism 100 and the active rotating shaft assembly 300 are too long axially, resulting in a heavy driving burden.

[0099] In an alternative embodiment, the consumable conveying device further includes a first blockage detection member 830. The active rotating shaft assembly 300 includes a third rotating shaft 310 and a second blockage detection member 330. The second blockage detection member 330 is connected to the third rotating shaft 310 and is opposite to the first blockage detection member 830. The second blockage detection member 330 is used to rotate synchronously with the third rotating shaft 310, and the first blockage detection member 830 is used to detect the movement state of the second blockage detection member 330 to send a blockage signal when the movement of the second blockage detection member 330 is abnormal.

[0100] The second material blockage detection member 330 can be connected to the end of the third rotating shaft 310, and includes a central plate with a disc-shaped structure and a grid plate that extends around the central plate for one week and extends to one side of the central plate. Notches 331 are intermittently arranged on the grid plate. The first material blockage detection member 830 can be a photoelectric switch, and the grid plate is arranged in the detection slot of the photoelectric switch. During the process of feeding or discharging materials, the active rotating shaft assembly 300 will drive and push the consumables to move, and the grid plate will regularly block the light of the photoelectric switch. When the consumables are blocked, it will generate resistance to the rotation of the active rotating shaft assembly 300, resulting in abnormal rotation of the active rotating shaft assembly 300, and the rule of the grid plate blocking the light of the photoelectric switch will change, such as becoming slower, or continuously blocking or continuously not blocking. In this way, it can be judged that a material blockage has occurred, and a material blockage signal can be sent to the controller to generate a prompt message.

[0101] In an alternative embodiment, the consumable conveying device further includes a plurality of consumable guiding blocks 700. The consumable guiding blocks 700 correspond to the feeding assembly 110. A consumable through hole 710 is formed on the consumable guiding block 700, and the consumable through hole 710 is used for threading the consumables on the material tray 10.

[0102] As Figure 3 shown, the consumable guiding block 700 may specifically include an upper block 730 and a lower block 720. Corresponding consumable through holes 710 are formed on the upper block 730 and the lower block 720. The upper block 730 and the lower block 720 are respectively located on the upper and lower sides between the feeding assembly 110 and the active rotating shaft assembly 300, and are used to limit the position of the consumables and play a role in guiding the consumables. In an alternative embodiment where the consumable conveying device includes a bracket 600 and the bracket 600 includes an inner cavity, an upper through hole and a lower through hole are provided on the bracket 600. The upper block 730 is connected to the top wall of the bracket 600, and the consumable through hole 710 of the upper block 730 corresponds to the upper through hole. The lower block 720 is connected to the bottom wall of the bracket 600, and the consumable through hole 710 of the lower block 720 corresponds to the lower through hole. The consumable guiding block 700 can correspond to the feeding assembly 110, or the same consumable guiding block 700 can be provided for two adjacent feeding assemblies 110, and two consumable through holes 710 need to be provided on the consumable guiding block 700.

[0103] In an alternative embodiment, as Figure 21 shown, the consumable conveying device further includes a consumable detection switch 840. The consumable detection switch 840 corresponds to the feeding assembly 110. The consumable detection switch 840 is used to sense the consumables, and the consumable detection switch 840 is used to generate a consumable in-place signal when there are consumables passing between the feeding assembly 110 and the active rotating shaft assembly 300.

[0104] The consumable detection switch 840 can be arranged on the consumable guide block 700, for example, arranged in the upper block 730. The consumable detection switch 840 can be a touch switch, and the elastic contact of the consumable detection switch 840 protrudes from the inner wall of the consumable through hole 710. When there is a consumable passing through the consumable through hole 710, or when there is a consumable located between the feeding assembly 110 and the driving rotating shaft assembly 300, the consumable detection switch 840 will generate a in-place signal, which can realize the function of detecting material breakage and prevent the situation of directly starting printing without inserting the consumable by mistake.

[0105] On the other hand, an embodiment of the present invention further provides a cartridge, including the consumable conveying device 1000 of any one of the foregoing, and a main housing 20. The consumable conveying device is connected to the main housing 20, and the main housing 20 is further used to connect to the material tray 10.

[0106] The main housing 20 can be an open housing, that is, the material tray 10 and the consumable conveying device 1000 are exposed, that is, providing bottom support. Or, in an optional embodiment, the main housing 20 includes an accommodation space, and both the material tray 10 and the consumable conveying device 1000 are located in the accommodation space. This makes the position between the material tray 10 and the material tray driving roller 30 more stable, and there is no need for the consumable conveying device 1000 to be installed according to the position of the material tray 10. Putting the material tray 10 and the consumable conveying device 1000 into the main housing 20 forms an integral body, and the setting position has various forms and can be arranged according to needs.

[0107] The main housing 20 can further include a bottom shell 21 and an upper shell 22. The upper shell 22 is used to cooperate with the bottom shell 21 to enclose an accommodation space, and both the consumable conveying device and the material tray 10 are connected to the bottom shell 21.

[0108] The upper shell 22 and the bottom shell 21 can be rotatably connected. In the optional embodiment in which the foregoing consumable conveying device 1000 includes a bracket 600, the bracket 600 can be connected to the bottom shell 21, for example, can be integrally formed. The upper shell 22 can be opened and closed relative to the bottom shell 21 to take and place the material tray 10. It can be understood that a consumable outlet is provided on the bottom shell 21 for leading out the consumable to the print head.

[0109] In an alternative embodiment, the cartridge further includes a passive platter roller 30, which is mainly used to support the platter 10. For example, the passive platter roller 30 is connected to the main housing 20 and is stationary. The passive platter roller 30 is movably inserted through the platter 10, such as being inserted into the central roller of the platter 10. When the active platter roller 30 rotates, the platter 10 will rotate relative to the passive platter roller 30. Alternatively, at least a part of the passive platter roller 30 is driven to rotate by the platter 10, which will reduce the rotational resistance of the platter 10. For example, the passive platter roller 30 includes a fourth rotating shaft and a plurality of second roller assemblies. The second roller assemblies are slidably sleeved on the fourth rotating shaft and correspond to the platter 10. The second roller assemblies are used to abut against the platter 10. When the platter 10 feeds or discharges materials, the second roller assemblies will rotate relative to the fourth rotating shaft following the rotation of the platter 10. Alternatively, the number of passive platter rollers 30 is multiple and corresponds to the platter 10. The passive platter rollers 30 are rotatably connected to the main housing 20, such as being slidably connected. The passive platter roller 30 includes a fourth rotating shaft and a second roller assembly. The second roller assembly is sleeved on the fourth rotating shaft and is fixedly sleeved. The second roller assembly is used to abut against the platter 10. When the platter 10 feeds or discharges materials, the fourth rotating shaft will rotate relative to the main housing 20 following the rotation of the platter 10.

[0110] The second roller assembly includes a second single roller 32 and a plurality of second friction sleeves 33. The second single roller 32 is sleeved on the fourth rotating shaft. A second friction sleeve 33 is sleeved on the second single roller 32. The second friction sleeve 33 is used to abut against the platter 10. The second friction sleeve 33 and the consumable delivery device are used to cooperate to abut against the platter 10 from different directions at the bottom of the platter 10. For example, the second roller assembly and the first roller assembly respectively abut against the platter 10 obliquely from different sides near the bottom of the platter 10.

[0111] In an alternative embodiment, the cartridge further includes a drying member 40, which is connected to the main housing 20 and is used to dry the consumables on the platter 10.

[0112] The drying member 40 may include a blower to blow air onto the platter, thereby drying the consumables.

[0113] In an alternative embodiment, the cartridge further includes a consumable identifier 50, which faces the identification label on the platter 10. The consumable identifier 50 is used to identify the label and generate identification information related to the identification label.

[0114] The consumable identification member 50 can adopt the non-contact radio frequency identification principle, such as NFC (Near Field Communication) identification. The consumable identification member 50 can be arranged in the accommodation space of the main housing 20 and located between adjacent material trays 10. For example, in an alternative embodiment with four material trays 10, the consumable identification member 50 is located between the first material tray 10 and the second material tray 10, and between the third material tray 10 and the fourth material tray 10. Identification labels that can be recognized by the consumable identification member 50 are arranged on the material trays 10, and then the types of consumables on the material trays 10, such as colors, materials, etc., can be detected, and the consumables can be switched by the positions of the material trays 10.

[0115] On the other hand, an embodiment of the present invention also provides a 3D printer, including the consumable conveying device 1000 of any one of the foregoing, or, the cartridge of any one of the foregoing. The advantages of the 3D printer including the consumable conveying device 1000 or the cartridge of any one of the foregoing will not be elaborated here.

[0116] The 3D printer further includes a main support frame, a power structure, a print head and a printing platform. The print head and the printing platform are both connected to the power structure and slidably connected to the main support frame, and the print head and the printing platform move relatively under the drive of the power structure for printing. The consumable conveying device 1000 or the cartridge can be connected to the main support frame, and the latter is fixed by an additional fixing member.

[0117] The present invention also provides an alternative embodiment of a complete consumable conveying device as follows. The consumable conveying device 1000 includes:

[0118] A material tray transmission mechanism 500 for driving the material tray at the corresponding position to rotate;

[0119] A shifting mechanism 100 including at least two shifting positions;

[0120] A conveying drive assembly for providing feeding power;

[0121] A switching drive assembly 200 for driving the shifting mechanism 100 to switch between different shifting positions;

[0122] When the shifting mechanism 100 is in the first shifting position, it is respectively in transmission connection with the conveying drive assembly and the material tray transmission mechanism 500 corresponding to the first position to drive the material tray corresponding to the first position to move;

[0123] When the shifting mechanism 100 is in the second shifting position, it is respectively in transmission connection with the conveying drive assembly and the material tray transmission mechanism 500 corresponding to the second position to drive the material tray corresponding to the second position to move.

[0124] Among them, when the shifting mechanism 100 is in the third shifting position, the shifting mechanism 100 cooperates with the conveying drive assembly to clamp the consumables at the first position, so that the consumables at the first position move; when the shifting mechanism 100 is in the fourth shifting position, the shifting mechanism 100 cooperates with the conveying drive assembly to clamp the consumables at the second position, so that the consumables at the second position move.

[0125] Among them, the shifting mechanism 100 includes a linkage member and at least two feeding components 110. The at least two feeding components 110 are connected to the linkage member, and the feeding components 110 correspond to the material trays; the first shifting position includes a material discharging shifting position, the second shifting position includes a material discharging shifting position, the position of the feeding component 110 includes a material discharging position. When the shifting mechanism 100 is in the material discharging shifting position, one of the at least two feeding components 110 is in the material discharging position. When the feeding component 110 is in the material discharging position, the feeding component 110 is in transmission connection with the conveying drive assembly and the material tray transmission mechanism 500 at the corresponding position.

[0126] Among them, the material tray transmission mechanism 500 is disposed opposite to the shifting mechanism 100. The shifting mechanism 100 is located between the material tray transmission mechanism 500 and the conveying drive assembly, and the material tray transmission mechanism 500 is used to abut against the material tray at the corresponding position.

[0127] Among them, the linkage member includes a first rotating shaft 120, the feeding component 110 includes a switching block 112 and a transmission component 111. The switching block 112 is connected to the first rotating shaft 120, and the transmission component 111 is connected to the switching block 112; the projection positions of the transmission components 111 on the at least two feeding components 110 in the axial direction of the first rotating shaft 120 are different; the transmission component protrudes from the circumferential side wall of the switching block 112; when the feeding component 110 is in the material discharging position, the transmission component 111 is in transmission connection with the conveying drive assembly and the material tray transmission mechanism 500.

[0128] Among them, the ratio of the linear velocity of the contact point between the conveying drive assembly and the transmission component 111 to the linear velocity of the contact point between the material tray transmission mechanism 500 and the material tray 10 is greater than or equal to 0.2 and less than or equal to 5.

[0129] Among them, the third shifting position includes a feeding shifting position, the fourth shifting position includes a feeding shifting position, the position of the feeding component 110 further includes a feeding position. When the shifting mechanism 100 is in the feeding shifting position, one of the at least two feeding components 110 is in the feeding position; when the feeding component 110 is in the feeding position, the feeding component 110 cooperates with the conveying drive assembly to squeeze the consumables of the corresponding material tray, so as to push the consumables to feed when the conveying drive assembly rotates; the transmission component 111 is disengaged from the transmission of at least one of the conveying drive assembly and the material tray transmission mechanism 500; when the feeding component 110 is in the material discharging position, the feeding component 110 cooperates with the conveying drive assembly to squeeze the consumables of the corresponding material tray 10, so as to push the consumables to discharge when the conveying drive assembly rotates;

[0130] Alternatively, when the feeding component 110 is in the material discharging position, there is a gap for the consumable to movably pass through between the feeding component 110 and the conveying driving component.

[0131] Wherein, the feeding component 110 further includes an acting component 113, the acting component 113 is connected to the switching block 112 and protrudes from the circumferential side wall of the switching block 112. The acting components 113 on at least two feeding components 110 correspond to different projection positions in the axial direction of the first rotating shaft 120, and the acting component 113 is used to cooperate with the conveying driving component to extrude the consumable.

[0132] Wherein, the feeding component 110 further includes an elastic component, the elastic component is connected to the switching block 112, the acting component 113 is connected to the elastic component, and the elastic component is used to apply an elastic force to the acting component 113 to make the acting component 113 move radially outward of the switching block 112; the elastic component includes an elastic arm and an elastic member, one end of the elastic arm is rotatably connected to the switching block 112, the other end of the elastic arm is connected to the acting component 113, and the elastic member is respectively connected to the switching block 112 and the elastic arm; the distance from the elastic member to the rotational connection of the elastic arm and the switching block 112 is greater than the distance from the acting component 113 to the rotational connection of the elastic arm and the switching block 112.

[0133] Wherein, the transmission component 111 at least includes a first transmission member, a second transmission member and an intermediate transmission member. The first transmission member, the second transmission member and the intermediate transmission member are rotatably connected to the switching block 112. The intermediate transmission member is located between the first transmission member and the second transmission member and is respectively in transmission connection with the first transmission member and the second transmission member. The first transmission member and the second transmission member correspond to different positions in the axial direction of the first rotating shaft 120, and the first transmission member and the second transmission member correspond to different projection positions in the axial direction of the first rotating shaft 120;

[0134] When the feeding component 110 is in the material discharging position, the second transmission member is in transmission connection with the conveying driving component, and the first transmission member is in transmission connection with the tray transmission mechanism 500. When the feeding component 110 is in the feeding position, the first transmission member and the second transmission member are disengaged from the conveying driving component.

[0135] Wherein, the tray transmission mechanism 500 and the conveying driving component are respectively located on the radial two sides of the shifting mechanism 100, and the rotation axes of the first transmission member, the second transmission member and the intermediate transmission member of the same feeding component 110 are located in the same plane.

[0136] The action component 113 includes a first action member and a second action member, the first action member corresponds to the axial projection position of the first transmission member on the first rotating shaft 120, and the second action member corresponds to the axial projection position of the second transmission member on the first rotating shaft 120. When the feeding component 110 is in the feeding position, the first action member cooperates with the conveying drive component to clamp the consumables at the corresponding position, and when the feeding component 110 is in the unloading position, the second action member cooperates with the conveying drive component to clamp the consumables at the corresponding position;

[0137] Alternatively, the acting component 113 includes a first acting member, and the first acting member, the first transmission member and the second transmission member respectively correspond to different positions on the circumferential projection of the first rotating shaft 120. When the feeding component 110 is in the feeding position, the first acting member cooperates with the conveying drive component to clamp the consumables at the corresponding position. When the feeding component 110 is in the unloading position, the switching block 112 is opposite to the conveying drive component, and the consumables move between the switching block 112 and the conveying drive component.

[0138] Alternatively, the transmission assembly 111 includes a first transmission member and a second transmission member, which are rotatably connected to the switching block 112, and the first transmission member includes a pinion and a gear, and the pinion and the second transmission member are transmission-connected; the gear is coaxially arranged with the first rotating shaft 120 and is connected to the material tray transmission mechanism 500, and when the feeding assembly 110 is in the feeding position, the second transmission member is disengaged from the conveying drive assembly, and when the feeding assembly 110 is in the withdrawing position, the second transmission member is transmission-connected to the conveying drive assembly.

[0139] The action component 113 includes a first action member and a second action member, the first action member and the second action member correspond to different positions of the circumferential projection of the first rotating shaft 120 respectively, the second action member corresponds to the projection position of the second transmission member on the axial direction of the first rotating shaft 120, when the feeding component 110 is in the feeding position, the first action member cooperates with the conveying drive component to clamp the consumables at the corresponding position, when the feeding component 110 is in the unloading position, the second action member cooperates with the conveying drive component to clamp the consumables at the corresponding position;

[0140] Alternatively, the acting component 113 includes a first acting member, and the first acting member and the second transmission member correspond to different axial projection positions of the first rotating shaft 120. When the feeding component 110 is in the feeding position, the first acting member cooperates with the conveying drive component to clamp the consumables at the corresponding position.

[0141] Among them, the distance between at least two adjacent feeding components 110 is less than the preset distance, and they are plugged into each other and limited; the two transmission components 111 on the two feeding components 110 that are plugged into each other are located between the two action components 113.

[0142] Among them, the tray transmission mechanism 500 includes a second rotating shaft 510 and a first roller assembly. The first roller assembly is rotatably sleeved on the second rotating shaft 510, and the first roller assembly corresponds to the tray 10. The first roller assembly is used to abut against the tray 10 at the corresponding position; alternatively, the number of the tray transmission mechanisms 500 is multiple. The tray transmission mechanisms 500 correspond to the trays 10. The tray transmission mechanism 500 includes a second rotating shaft 510 and a first roller assembly. The first roller assembly is fixedly sleeved on the second rotating shaft 510, and the first roller assembly is used to abut against the tray 10 at the corresponding position.

[0143] Among them, the first roller assembly includes a first single roller 521, a toothed roller 522, and a first friction sleeve 523. Both the first single roller 521 and the toothed roller 522 are sleeved on the second rotating shaft 510. A first friction sleeve 523 is sleeved on both the first single roller 521 and the toothed roller 522. The toothed roller 522 includes a transmission tooth 5221. The transmission tooth 5221 is located outside the first friction sleeve 523, and the transmission tooth 5221 is used for driving connection with the transmission component 111.

[0144] Among them, the consumable material conveying device further includes: a limiting device; the switching drive assembly 200 is used to drive the shifting mechanism 100 to rotate; the shifting mechanism 100 further includes a shifting turntable 130. The shifting turntable 130 is coaxially connected with the first rotating shaft 120. A plurality of limiting members are provided circumferentially on the shifting turntable 130. When the shifting mechanism 100 is in different shifting positions, the corresponding limiting members interact with the limiting device to maintain the position of the shifting mechanism 100.

[0145] Among them, the shifting position further includes an empty position. When the shifting mechanism 100 is in the empty position, the shifting mechanism 100 is not connected to the conveying drive assembly and the tray transmission mechanism 500, and the consumable materials of the plurality of trays 10 are movably connected between the shifting mechanism 100 and the conveying drive assembly;

[0146] The switching drive assembly 200 is further used to drive the shifting mechanism 100 to move to the empty position.

[0147] Among them, the shifting mechanism 100 further includes a plurality of limiting blocks 140. The limiting blocks 140 are connected to the linkage member and are used to limit the feeding assembly 110; and / or, the feeding assembly 110 includes a switching block 112. A limiting bayonet 121 is provided on the linkage member. A limiting card surface is provided on the inner wall of the through hole of the switching block 112. The switching block 112 is connected to the linkage member. The limiting bayonet 121 and the limiting card surface interact to fix the feeding assembly 110 and the linkage member; and / or, the feeding assembly 110 includes a switching block 112 and a plug 116. The plug 116 is connected to the switching block 112, and the plugs 116 of at least two adjacent feeding assemblies 110 are connected to each other.

[0148] Among them, the conveying drive assembly includes a driving rotating shaft assembly 300 and a power drive assembly 400. The driving rotating shaft assembly 300 is arranged in parallel with the shifting mechanism 100. The power drive assembly 400 is connected to the driving rotating shaft assembly 300 and is used to drive the driving rotating shaft assembly 300 to rotate. The shifting mechanism 100 is in transmission connection with the driving rotating shaft assembly 300.

[0149] Among them, the driving rotating shaft assembly 300 includes a third rotating shaft 310 and a plurality of pushing gears 320. The pushing gears 320 are sleeved on the third rotating shaft 310, and the pushing gears 320 are used to cooperate with the feeding assembly 110 to extrude the consumable material.

[0150] Among them, the consumable material conveying device further includes: a first material blockage detection member 830. The driving rotating shaft assembly 300 includes a third rotating shaft 310 and a second material blockage detection member 330. The second material blockage detection member 330 is connected to the third rotating shaft 310 and is opposite to the first material blockage detection member 830. The second material blockage detection member 330 is used to rotate synchronously with the third rotating shaft 310. The first material blockage detection member 830 is used to detect the movement state of the second material blockage detection member 330, so as to send a material blockage signal when the movement of the second material blockage detection member 330 is abnormal.

[0151] Among them, the consumable material conveying device further includes: a bracket 600. The shifting mechanism 100 and the conveying drive assembly are both rotatably connected to the bracket 600. The consumable material conveying device further includes a plurality of bearings 900. The shifting mechanism 100 and the conveying drive assembly are respectively rotatably connected to the bracket 600 through at least one bearing 900.

[0152] Among them, the consumable material conveying device further includes: a plurality of consumable material guiding blocks 700. The consumable material guiding blocks 700 correspond to the feeding assembly 110. A consumable material through hole 710 is formed on the consumable material guiding block 700, and the consumable material through hole 710 is used to thread the consumable material on the material tray 10.

[0153] Among them, the consumable material conveying device further includes: a consumable material detection switch 840. The consumable material detection switch 840 is used to generate a consumable material in place signal when there is consumable material passing through between the feeding assembly 110 and the conveying drive assembly.

[0154] The present application also provides a complete embodiment of a cartridge, including the complete embodiment of the foregoing consumable delivery device 1000, and a main housing 20. The consumable delivery device is connected to the main housing 20, and the main housing 20 is further configured to accommodate a tray 10. The cartridge further includes: a drying member 40, connected to the main housing 20, for drying the consumables on the tray 10. The cartridge further includes: a consumable identification member 50, connected to the main housing 20 and opposite to the identification label on the tray 10, for reading the information of the identification label. The main housing 20 includes a bottom case 21 and an upper case 22. The upper case 22 is used to cooperate with the bottom case 21 to enclose an accommodation space. The consumable delivery device and the tray 10 are both connected to the bottom case 21 and located in the accommodation space.

[0155] The present application also provides the following embodiments:

[0156] Reference numeral 1, a consumable delivery device, wherein the consumable delivery device 1000 includes:

[0157] A tray transmission mechanism 500 for driving the tray at a corresponding position to rotate;

[0158] A shifting mechanism 100 including at least two shifting positions;

[0159] A conveying drive assembly for providing feeding power;

[0160] A switching drive assembly 200 for driving the shifting mechanism 100 to switch between different shifting positions;

[0161] When the shifting mechanism 100 is in the first shifting position, it is respectively in transmission connection with the conveying drive assembly and the tray transmission mechanism 500 corresponding to the first position to drive the tray corresponding to the first position to move;

[0162] When the shifting mechanism 100 is in the second shifting position, it is respectively in transmission connection with the conveying drive assembly and the tray transmission mechanism 500 corresponding to the second position to drive the tray corresponding to the second position to move.

[0163] Reference numeral 2, the consumable delivery device according to Reference numeral 1, wherein when the shifting mechanism 100 is in the third shifting position, the shifting mechanism 100 cooperates with the conveying drive assembly to clamp the consumables at the first position to make the consumables at the first position move; when the shifting mechanism 100 is in the fourth shifting position, the shifting mechanism 100 cooperates with the conveying drive assembly to clamp the consumables at the second position to make the consumables at the second position move.

[0164] Reference numeral 3, the consumable delivery device according to Reference numeral 2, wherein

[0165] The shifting mechanism 100 includes a linkage member and at least two feeding components 110. The at least two feeding components 110 are connected to the linkage member, and the feeding components 110 correspond to the trays.

[0166] The first shifting position includes a material discharging shifting position, the second shifting position includes a material discharging shifting position, the position of the feeding component 110 includes a material discharging position. When the shifting mechanism 100 is in the material discharging shifting position, at least one of the at least two feeding components 110 is in the material discharging position. When the feeding component 110 is in the material discharging position, the feeding component 110 is in transmission connection with the conveying driving component and the tray transmission mechanism 500 at the corresponding position.

[0167] Item 4. The consumable material conveying device according to Item 3, wherein

[0168] The tray transmission mechanism 500 is disposed opposite to the shifting mechanism 100. The shifting mechanism 100 is located between the tray transmission mechanism 500 and the conveying driving component. The tray transmission mechanism 500 is used for abutting against the tray at the corresponding position.

[0169] Item 5. The consumable material conveying device according to Item 5, wherein the linkage member includes a first rotating shaft 120, the feeding component 110 includes a switching block 112 and a transmission component 111. The switching block 112 is connected to the first rotating shaft 120, and the transmission component 111 is connected to the switching block 112;

[0170] The projection positions of the transmission components 111 on the at least two feeding components 110 in the axial direction of the first rotating shaft 120 are different; the transmission component protrudes from the circumferential side wall of the switching block 112; when the feeding component 110 is in the material discharging position, the transmission component 111 is in transmission connection with the conveying driving component and the tray transmission mechanism 500.

[0171] Item 6. The consumable material conveying device according to Item 5, wherein the ratio of the linear velocity of the contact point between the conveying driving component and the transmission component 111 to the linear velocity of the contact point between the tray transmission mechanism 500 and the tray 10 is greater than or equal to 0.2 and less than or equal to 5.

[0172] Item 7. The consumable material conveying device according to Item 5, wherein the third shifting position includes a feeding shifting position, the fourth shifting position includes a feeding shifting position, the position of the feeding component 110 further includes a feeding position. When the shifting mechanism 100 is in the feeding shifting position, at least one of the at least two feeding components 110 is in the feeding position;

[0173] When the feeding assembly 110 is in the feeding position, the feeding assembly 110 cooperates with the conveying driving assembly to squeeze the consumables of the corresponding tray, so as to push the consumables to feed when the conveying driving assembly rotates; the transmission assembly 111 is disengaged from the transmission of the conveying driving assembly, and / or the transmission assembly 111 is disengaged from the transmission of the tray transmission mechanism 500; when the feeding assembly 110 is in the discharging position, the feeding assembly 110 cooperates with the conveying driving assembly to squeeze the consumables of the corresponding tray 10, so as to push the consumables to discharge when the conveying driving assembly rotates.

[0174] Alternatively, when the feeding assembly 110 is in the discharging position, there is a gap for the consumables to pass through between the feeding assembly 110 and the conveying driving assembly.

[0175] Reference numeral 8. The consumable conveying device according to reference numeral 7, wherein the feeding assembly 110 further includes an acting component 113, the acting component 113 is connected to the switching block 112 and protrudes from the circumferential side wall of the switching block 112, and the acting components 113 on at least two feeding assemblies 110 have different projection positions in the axial direction of the first rotating shaft 120, and the acting component 113 is used to cooperate with the conveying driving assembly to squeeze the consumables.

[0176] Reference numeral 9. The consumable conveying device according to reference numeral 8, wherein the feeding assembly 110 further includes an elastic component, the elastic component is connected to the switching block 112, the acting component 113 is connected to the elastic component, and the elastic component is used to apply an elastic force to the acting component 113 to move the acting component 113 radially outward of the switching block 112.

[0177] The elastic component includes an elastic arm and an elastic member. One end of the elastic arm is rotatably connected to the switching block 112, the other end of the elastic arm is connected to the acting component 113, and the elastic member is respectively connected to the switching block 112 and the elastic arm.

[0178] The distance from the elastic member to the rotational connection of the elastic arm and the switching block 112 is greater than the distance from the acting component 113 to the rotational connection of the elastic arm and the switching block 112.

[0179] Reference numeral 10. The consumable conveying device according to reference numeral 8, wherein

[0180] The transmission assembly 111 at least includes a first transmission member, a second transmission member and an intermediate transmission member. The first transmission member, the second transmission member and the intermediate transmission member are rotatably connected to the switching block 112. The intermediate transmission member is located between the first transmission member and the second transmission member and is respectively in transmission connection with the first transmission member and the second transmission member. The projection positions of the first transmission member and the second transmission member in the axial direction of the first rotating shaft 120 are different, and the projection positions of the first transmission member and the second transmission member in the axial direction of the first rotating shaft 120 are different.

[0181] When the feeding assembly 110 is in the material discharging position, the second transmission member is in transmission connection with the conveying drive assembly, and the first transmission member is in transmission connection with the tray transmission mechanism 500. When the feeding assembly 110 is in the material feeding position, both the first transmission member and the second transmission member are disengaged from the transmission of the conveying drive assembly.

[0182] Reference numeral 11. The consumable material conveying device according to reference numeral 10, wherein the tray transmission mechanism 500 and the conveying drive assembly are respectively located on the radial two sides of the shifting mechanism 100, and the rotation axes of the first transmission member, the second transmission member and the intermediate transmission member of the same feeding assembly 110 are located in the same plane.

[0183] Reference numeral 12. The consumable material conveying device according to reference numeral 10, wherein

[0184] The acting assembly 113 includes a first acting member and a second acting member. The first acting member corresponds to the projection position of the first transmission member in the axial direction of the first rotating shaft 120, and the second acting member corresponds to the projection position of the second transmission member in the axial direction of the first rotating shaft 120. When the feeding assembly 110 is in the material feeding position, the first acting member cooperates with the conveying drive assembly to clamp the consumable material at the corresponding position. When the feeding assembly 110 is in the material discharging position, the second acting member cooperates with the conveying drive assembly to clamp the consumable material at the corresponding position;

[0185] Alternatively, the acting assembly 113 includes a first acting member. The projection positions of the first acting member, the first transmission member and the second transmission member in the axial direction of the first rotating shaft 120 are different. When the feeding assembly 110 is in the material feeding position, the first acting member cooperates with the conveying drive assembly to clamp the consumable material at the corresponding position. When the feeding assembly 110 is in the material discharging position, the switching block 112 faces the conveying drive assembly, and the consumable material is movably connected between the switching block 112 and the conveying drive assembly.

[0186] Reference numeral 13. The consumable material conveying device according to reference numeral 8, wherein the transmission assembly 111 includes a first transmission member and a second transmission member. The first transmission member and the second transmission member are rotationally connected to the switching block 112. The first transmission member includes a small gear and a large gear, and the small gear is in transmission connection with the second transmission member;

[0187] The large gear is coaxially arranged with the first rotating shaft 120 and is connected to the tray transmission mechanism 500. When the feeding assembly 110 is in the material feeding position, the second transmission member is disengaged from the conveying drive assembly. When the feeding assembly 110 is in the material discharging position, the second transmission member is in transmission connection with the conveying drive assembly.

[0188] Reference numeral 14. The consumable material conveying device according to reference numeral 13, wherein

[0189] The acting component 113 includes a first acting member and a second acting member. The first acting member and the second acting member respectively correspond to different projection positions in the axial direction of the first rotating shaft 120. The second acting member corresponds to the projection position of the second transmission member in the axial direction of the first rotating shaft 120. When the feeding component 110 is in the feeding position, the first acting member cooperates with the conveying driving component to clamp the consumable at the corresponding position. When the feeding component 110 is in the retracting position, the second acting member cooperates with the conveying driving component to clamp the consumable at the corresponding position.

[0190] Alternatively, the acting component 113 includes a first acting member. The first acting member corresponds to a different projection position in the axial direction of the first rotating shaft 120 from that of the second transmission member. When the feeding component 110 is in the feeding position, the first acting member cooperates with the conveying driving component to clamp the consumable at the corresponding position.

[0191] Reference numeral 15. The consumable conveying device according to reference numeral 3, wherein the distance between at least two adjacent feeding components 110 is less than a preset distance and they are inserted into and limited by each other; the two transmission components 111 on the two feeding components 110 inserted into each other are located between the two acting components 113.

[0192] Reference numeral 16. The consumable conveying device according to reference numeral 1, wherein the tray transmission mechanism 500 includes a second rotating shaft 510 and a first roller assembly. The first roller assembly is rotatably sleeved on the second rotating shaft 510 and corresponds to the tray 10. The first roller assembly is used to abut against the tray 10 at the corresponding position.

[0193] Alternatively, the number of the tray transmission mechanisms 500 is multiple. The tray transmission mechanisms 500 correspond to the trays 10. The tray transmission mechanism 500 includes a second rotating shaft 510 and a first roller assembly. The first roller assembly is fixedly sleeved on the second rotating shaft 510. The first roller assembly is used to abut against the tray 10 at the corresponding position.

[0194] Reference numeral 17. The consumable conveying device according to reference numeral 16, wherein the first roller assembly includes a first single roller 521, a toothed roller 522 and a first friction sleeve 523. The first single roller 521 and the toothed roller 522 are both sleeved on the second rotating shaft 510. The first single roller 521 and the toothed roller 522 are both sleeved with the first friction sleeve 523. The toothed roller 522 includes a transmission tooth 5221. The transmission tooth 5221 is located outside the first friction sleeve 523. The transmission tooth 5221 is used for driving connection with the transmission component 111.

[0195] Reference numeral 18. The consumable conveying device according to reference numeral 1, wherein the consumable conveying device further includes:

[0196] A limiting device; a switching driving component 200 is used for driving the shifting mechanism 100 to rotate;

[0197] The shift mechanism 100 further includes a shift turntable 130. The shift turntable 130 is coaxially connected to the first rotating shaft 120. A plurality of limit members are provided circumferentially on the shift turntable 130. When the shift mechanism 100 is in different shift positions, the corresponding limit members interact with the limit device to maintain the position of the shift mechanism 100.

[0198] Reference numeral 19. The consumable material conveying device according to reference numeral 1, wherein the shift position further includes an idle position. When the shift mechanism 100 is in the idle position, the shift mechanism 100 is not connected to the conveying drive assembly and the tray transmission mechanism 500, and the consumable materials of a plurality of trays 10 are movably inserted between the shift mechanism 100 and the conveying drive assembly; the switching drive assembly 200 is further configured to drive the shift mechanism 100 to move to the idle position.

[0199] Reference numeral 20. The consumable material conveying device according to reference numeral 3, wherein the shift mechanism 100 further includes a plurality of limit blocks 140. The limit blocks 140 are connected to the linkage member and are used to limit the feeding assembly 110.

[0200] And / or, the feeding assembly 110 includes a switching block 112. A limit bayonet 121 is provided on the linkage member. A limit card surface is provided on the inner wall of the through hole of the switching block 112. The switching block 112 is connected to the linkage member. The limit bayonet 121 and the limit card surface interact to fix the feeding assembly 110 and the linkage member.

[0201] And / or, the feeding assembly 110 includes a switching block 112 and a plug 116. The plug 116 is connected to the switching block 112. The plugs 116 of at least two adjacent feeding assemblies 110 are connected to each other.

[0202] Reference numeral 21. The consumable material conveying device according to reference numeral 1, wherein the conveying drive assembly includes a main rotating shaft assembly 300 and a power drive assembly 400. The main rotating shaft assembly 300 is arranged in parallel with the shift mechanism 100. The power drive assembly 400 is connected to the main rotating shaft assembly 300 and is used to drive the main rotating shaft assembly 300 to rotate;

[0203] The shift mechanism 100 is in transmission connection with the main rotating shaft assembly 300.

[0204] Reference numeral 22. The consumable material conveying device according to reference numeral 21, wherein the main rotating shaft assembly 300 includes a third rotating shaft 310 and a plurality of pushing gears 320. The pushing gears 320 are sleeved on the third rotating shaft 310. The pushing gears 320 are used to cooperate with the feeding assembly 110 to squeeze the consumable materials.

[0205] Reference numeral 23. The consumable material conveying device according to reference numeral 21, wherein the consumable material conveying device further includes:

[0206] The first material blocking detection member 830, the driving rotating shaft assembly 300 includes a third rotating shaft 310 and a second material blocking detection member 330. The second material blocking detection member 330 is connected to the third rotating shaft 310 and is opposite to the first material blocking detection member 830. The second material blocking detection member 330 is used to rotate synchronously with the third rotating shaft 310. The first material blocking detection member 830 is used to detect the moving state of the second material blocking detection member 330, so as to send a material blocking signal when the movement of the second material blocking detection member 330 is abnormal.

[0207] Reference numeral 24. The consumable material conveying device according to reference numeral 1, wherein the consumable material conveying device further includes: a bracket 600, the shifting mechanism 100 and the conveying driving assembly are both rotatably connected to the bracket 600; the consumable material conveying device further includes a plurality of bearings 900, and the shifting mechanism 100 and the conveying driving assembly are respectively rotatably connected to the bracket 600 through at least one bearing 900.

[0208] Reference numeral 25. The consumable material conveying device according to reference numeral 1, wherein the consumable material conveying device further includes:

[0209] A plurality of consumable material guiding blocks 700, the consumable material guiding blocks 700 correspond to the feeding assembly 110, and a consumable material through hole 710 is formed on the consumable material guiding blocks 700. The consumable material through hole 710 is used for threading the consumable material on the material tray 10.

[0210] Reference numeral 26. The consumable material conveying device according to reference numeral 1, wherein the consumable material conveying device further includes:

[0211] A consumable material detection switch 840, which is used to generate a consumable material in-place signal when there is consumable material passing through between the feeding assembly 110 and the conveying driving assembly.

[0212] Reference numeral 27. A material box, which includes a consumable material conveying device 1000 according to any one of the foregoing reference numerals 1-26, and a main housing 20. The consumable material conveying device is connected to the main housing 20, and the main housing 20 is further used to accommodate the material tray 10.

[0213] Reference numeral 28. The material box according to reference numeral 27, wherein the material box further includes: a drying member 40, the drying member 40 is connected to the main housing 20 and is used to dry the consumable material on the material tray 10.

[0214] Reference numeral 29. The material box according to reference numeral 27, wherein the material box further includes: a consumable material identification member 50, the consumable material identification member 50 is connected to the main housing 20 and is opposite to the identification label on the material tray 10. The consumable material identification member 50 is used to read the information of the identification label.

[0215] Reference numeral 30. The material box according to reference numeral 27, wherein the main housing 20 includes a bottom shell 21 and an upper shell 22. The upper shell 22 is used to cooperate with the bottom shell 21 to enclose an accommodation space. The consumable material conveying device and the material tray 10 are both connected to the bottom shell 21 and are located in the accommodation space.

[0216] Reference numeral 31, a 3D printer, which includes a consumable conveying device according to any one of the above reference numerals 1-26, or includes a cartridge according to any one of the above reference numerals 27-30.

[0217] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A consumable conveying device, characterized in that, The consumable material conveying device (1000) includes: A tray driving mechanism (500) for driving the rotation of the tray at the corresponding position; A shifting mechanism (100) including at least two shifting positions; A conveying driving assembly for providing the feeding power; A switching driving assembly (200) for driving the shifting mechanism (100) to switch between different shifting positions; When the shifting mechanism (100) is in the first shifting position, it is respectively in transmission connection with the conveying driving assembly and the tray driving mechanism (500) corresponding to the first position to drive the tray corresponding to the first position to move; When the shifting mechanism (100) is in the second shifting position, it is respectively in transmission connection with the conveying driving assembly and the tray driving mechanism (500) corresponding to the second position to drive the tray corresponding to the second position to move.

2. The consumable material conveying device according to claim 1, wherein: When the shifting mechanism (100) is in the third shifting position, the shifting mechanism (100) cooperates with the conveying driving assembly to clamp the consumable material at the first position so that the consumable material at the first position moves; When the shifting mechanism (100) is in the fourth shifting position, the shifting mechanism (100) cooperates with the conveying driving assembly to clamp the consumable material at the second position so that the consumable material at the second position moves.

3. The consumable material conveying device according to claim 2, wherein: The shifting mechanism (100) includes a linkage member and at least two feeding assemblies (110), the at least two feeding assemblies (110) are connected to the linkage member, and the feeding assemblies (110) correspond to the trays; The first shifting position includes a material discharging shifting position, the second shifting position includes a material discharging shifting position, the position of the feeding assembly (110) includes a material discharging position. When the shifting mechanism (100) is in the material discharging shifting position, one of the at least two feeding assemblies (110) is in the material discharging position. When the feeding assembly (110) is in the material discharging position, the feeding assembly (110) is in transmission connection with the conveying driving assembly and the tray driving mechanism (500) at the corresponding position.

4. The consumable material conveying device according to claim 3, wherein: The tray driving mechanism (500) is disposed opposite to the shifting mechanism (100), the shifting mechanism (100) is located between the tray driving mechanism (500) and the conveying driving assembly, and the tray driving mechanism (500) is used to abut against the tray at the corresponding position.

5. The consumable material conveying device according to claim 3, wherein: The linkage member includes a first rotating shaft (120), the feeding assembly (110) includes a switching block (112) and a transmission assembly (111), the switching block (112) is connected to the first rotating shaft (120), and the transmission assembly (111) is connected to the switching block (112); The projection positions of the transmission assemblies (111) on the at least two feeding assemblies (110) in the axial direction of the first rotating shaft (120) are different; The transmission assembly protrudes from the circumferential side wall of the switching block (112); When the feeding assembly (110) is in the material discharging position, the transmission assembly (111) is in driving connection with the conveying driving assembly and the tray transmission mechanism (500).

6. The consumable material conveying device according to claim 5, wherein The ratio of the linear velocity of the contact point between the conveying driving assembly and the transmission assembly (111) to the linear velocity of the contact point between the tray transmission mechanism (500) and the tray (10) is greater than or equal to 0.2 and less than or equal to 5.

7. The consumable material conveying device according to claim 5, wherein The third shifting position includes a feeding shifting position, the fourth shifting position includes a feeding shifting position, the position of the feeding assembly (110) further includes a feeding position, and when the shifting mechanism (100) is in the feeding shifting position, one of the at least two feeding assemblies (110) is in the feeding position; When the feeding assembly (110) is in the feeding position, the feeding assembly (110) cooperates with the conveying driving assembly to squeeze the consumable material of the corresponding tray, so as to push the consumable material to feed when the conveying driving assembly rotates; the transmission assembly (111) is disengaged from the conveying driving assembly, and / or the transmission assembly (111) is disengaged from the tray transmission mechanism (500); When the feeding assembly (110) is in the material discharging position, the feeding assembly (110) cooperates with the conveying driving assembly to squeeze the consumable material of the corresponding tray (10), so as to push the consumable material to discharge when the conveying driving assembly rotates; Alternatively, when the feeding assembly (110) is in the material discharging position, there is a gap for the consumable material to pass through between the feeding assembly (110) and the conveying driving assembly.

8. The consumable material conveying device according to claim 7, wherein The feeding assembly (110) further includes an acting component (113), the acting component (113) is connected to the switching block (112) and protrudes from the circumferential side wall of the switching block (112), and the projection positions of the acting components (113) on the at least two feeding assemblies (110) in the axial direction of the first rotating shaft (120) are different, and the acting component (113) is used to cooperate with the conveying driving assembly to squeeze the consumable material.

9. The consumable material conveying device according to claim 8, wherein The feeding assembly (110) further includes an elastic component, the elastic component is connected to the switching block (112), the acting component (113) is connected to the elastic component, and the elastic component is used to apply an elastic force to the acting component (113) to make the acting component (113) move radially outward of the switching block (112); The elastic component includes an elastic arm and an elastic member, one end of the elastic arm is rotatably connected to the switching block (112), the other end of the elastic arm is connected to the acting component (113), and the elastic member is respectively connected to the switching block (112) and the elastic arm; The distance from the elastic member to the rotational connection between the elastic arm and the switching block (112) is greater than the distance from the acting component (113) to the rotational connection between the elastic arm and the switching block (112).

10. The consumable material conveying device according to claim 8, wherein the transmission component (111) at least includes a first transmission member, a second transmission member and an intermediate transmission member. The first transmission member, the second transmission member and the intermediate transmission member are rotationally connected to the switching block (112). The intermediate transmission member is located between the first transmission member and the second transmission member and is respectively in transmission connection with the first transmission member and the second transmission member. The projection positions of the first transmission member and the second transmission member in the axial direction of the first rotating shaft (120) are different; when the feeding component (110) is in the material discharging position, the second transmission member is in transmission connection with the conveying driving component, and the first transmission member is in transmission connection with the tray transmission mechanism (500). When the feeding component (110) is in the material feeding position, both the first transmission member and the second transmission member are disengaged from the conveying driving component.

11. The consumable material conveying device according to claim 10, wherein the tray transmission mechanism (500) and the conveying driving component are respectively located on the radial two sides of the shifting mechanism (100). The rotational axes of the first transmission member, the second transmission member and the intermediate transmission member of the same feeding component (110) are located in the same plane.

12. The consumable material conveying device according to claim 10, wherein the acting component (113) includes a first acting member and a second acting member. The projection position of the first acting member in the axial direction of the first rotating shaft (120) corresponds to that of the first transmission member, and the projection position of the second acting member in the axial direction of the first rotating shaft (120) corresponds to that of the second transmission member. When the feeding component (110) is in the material feeding position, the first acting member cooperates with the conveying driving component to clamp the consumable material at the corresponding position. When the feeding component (110) is in the material discharging position, the second acting member cooperates with the conveying driving component to clamp the consumable material at the corresponding position; alternatively, the acting component (113) includes a first acting member. The projection positions of the first acting member, the first transmission member and the second transmission member in the axial direction of the first rotating shaft (120) are different. When the feeding component (110) is in the material feeding position, the first acting member cooperates with the conveying driving component to clamp the consumable material at the corresponding position. When the feeding component (110) is in the material discharging position, the switching block (112) faces the conveying driving component, and the consumable material is movably connected between the switching block (112) and the conveying driving component.

13. The consumable material conveying device according to claim 8, wherein The transmission assembly (111) includes a first transmission member and a second transmission member. Both the first transmission member and the second transmission member are rotatably connected to the switching block (112). The first transmission member includes a small gear and a large gear, and the small gear is in transmission connection with the second transmission member; The large gear is coaxially arranged with the first rotating shaft (120) and is connected to the tray transmission mechanism (500). When the feeding assembly (110) is in the feeding position, the second transmission member is disengaged from the conveying driving assembly. When the feeding assembly (110) is in the discharging position, the second transmission member is in transmission connection with the conveying driving assembly.

14. The consumable material conveying device according to claim 13, wherein The acting assembly (113) includes a first acting member and a second acting member. The projection positions of the first acting member and the second acting member in the axial direction of the first rotating shaft (120) are different. The projection position of the second acting member corresponds to that of the second transmission member in the axial direction of the first rotating shaft (120). When the feeding assembly (110) is in the feeding position, the first acting member cooperates with the conveying driving assembly to clamp the consumable material at the corresponding position. When the feeding assembly (110) is in the discharging position, the second acting member cooperates with the conveying driving assembly to clamp the consumable material at the corresponding position; Alternatively, the acting assembly (113) includes a first acting member. The projection position of the first acting member in the axial direction of the first rotating shaft (120) is different from that of the second transmission member. When the feeding assembly (110) is in the feeding position, the first acting member cooperates with the conveying driving assembly to clamp the consumable material at the corresponding position.

15. The consumable material conveying device according to claim 8, wherein The distance between at least two adjacent feeding assemblies (110) is less than a preset distance, and they are inserted and limited to each other; The two transmission assemblies (111) on the two feeding assemblies (110) that are inserted into each other are located between the two acting assemblies (113).

16. The consumable material conveying device according to claim 1, wherein The tray transmission mechanism (500) includes a second rotating shaft (510) and a first roller assembly. The first roller assembly is rotatably sleeved on the second rotating shaft (510), and the first roller assembly corresponds to the tray (10). The first roller assembly is used to abut against the tray (10) at the corresponding position; Alternatively, the number of the tray transmission mechanisms (500) is multiple. The tray transmission mechanisms (500) correspond to the tray (10). The tray transmission mechanism (500) includes a second rotating shaft (510) and a first roller assembly. The first roller assembly is fixedly sleeved on the second rotating shaft (510), and the first roller assembly is used to abut against the tray (10) at the corresponding position.

17. The consumable material conveying device according to claim 16, wherein The first roller assembly includes a first single roller (521), a toothed roller (522), and a first friction sleeve (523). The first single roller (521) and the toothed roller (522) are both sleeved on the second rotating shaft (510). The first friction sleeve (523) is sleeved on both the first single roller (521) and the toothed roller (522). The toothed roller (522) includes transmission teeth (5221), and the transmission teeth (5221) are located outside the first friction sleeve (523). The transmission teeth (5221) are used for driving connection with a transmission component (111).

18. The consumable delivery device according to claim 1, wherein, The consumable material conveying device further includes: a limiting device; The switching drive assembly (200) is used for driving the shifting mechanism (100) to rotate; The shifting mechanism (100) further includes a shifting turntable (130). The shifting turntable (130) is coaxially connected to the first rotating shaft (120) of the shifting mechanism (100). A plurality of limiting members are provided circumferentially on the shifting turntable (130). When the shifting mechanism (100) is in different shifting positions, the corresponding limiting members interact with the limiting device to maintain the position of the shifting mechanism (100).

19. The consumable material conveying device according to claim 1, wherein the shifting position further includes an idle position. When the shifting mechanism (100) is in the idle position, the shifting mechanism (100) is not connected to the conveying drive assembly and the tray transmission mechanism (500), and the consumable materials of a plurality of the trays (10) are movably threaded between the shifting mechanism (100) and the conveying drive assembly; The switching drive assembly (200) is further used for driving the shifting mechanism (100) to move to the idle position.

20. The consumable material conveying device according to claim 3, wherein the shifting mechanism (100) further includes a plurality of limiting blocks (140). The limiting blocks (140) are connected to the linkage member and are used for limiting the feeding assembly (110); and / or, the feeding assembly (110) includes a switching block (112). A limiting bayonet (121) is provided on the linkage member, and a limiting card surface is provided on the inner wall of the through hole of the switching block (112). The switching block (112) is connected to the linkage member, and the limiting bayonet (121) and the limiting card surface interact to fix the feeding assembly (110) and the linkage member; and / or, the feeding assembly (110) includes a switching block (112) and a plug-in member (116). The plug-in member (116) is connected to the switching block (112), and the plug-in members (116) of at least two adjacent feeding assemblies (110) are connected to each other.

21. The consumable material conveying device according to claim 1, wherein The conveying drive assembly includes a driving rotating shaft assembly (300) and a power drive assembly (400). The driving rotating shaft assembly (300) is arranged in parallel with the shifting mechanism (100). The power drive assembly (400) is connected to the driving rotating shaft assembly (300) and is used to drive the driving rotating shaft assembly (300) to rotate; The shifting mechanism (100) is in transmission connection with the driving rotating shaft assembly (300).

22. The consumable material conveying device according to claim 21, wherein, The driving rotating shaft assembly (300) includes a third rotating shaft (310) and a plurality of pushing gears (320). The pushing gears (320) are sleeved on the third rotating shaft (310), and the pushing gears (320) are used to cooperate with the feeding assembly (110) of the shifting mechanism (100) to squeeze the consumable material.

23. The consumable delivery device according to claim 21, wherein, The consumable material conveying device further includes: A first material blockage detection member (830). The driving rotating shaft assembly (300) includes a third rotating shaft (310) and a second material blockage detection member (330). The second material blockage detection member (330) is connected to the third rotating shaft (310) and is opposite to the first material blockage detection member (830). The second material blockage detection member (330) is used to rotate synchronously with the third rotating shaft (310). The first material blockage detection member (830) is used to detect the moving state of the second material blockage detection member (330) so as to send a material blockage signal when the movement of the second material blockage detection member (330) is abnormal.

24. The consumable delivery device according to claim 1, wherein The consumable material conveying device further includes: A bracket (600). Both the shifting mechanism (100) and the conveying drive assembly are rotatably connected to the bracket (600); The consumable material conveying device further includes a plurality of bearings (900). The shifting mechanism (100) and the conveying drive assembly are respectively rotatably connected to the bracket (600) through at least one of the bearings (900).

25. The consumable delivery device according to claim 1, wherein The consumable material conveying device further includes: A plurality of consumable material guiding blocks (700). The consumable material guiding blocks (700) correspond to the feeding assembly (110) of the shifting mechanism (100). A consumable material through hole (710) is formed in the consumable material guiding block (700), and the consumable material through hole (710) is used to thread the consumable material on the material tray (10).

26. The consumable delivery device according to claim 1, wherein The consumable material conveying device further includes: A consumable material detection switch (840). The consumable material detection switch (840) is used to generate a consumable material in-place signal when there is consumable material passing between the feeding assembly (110) of the shifting mechanism (100) and the conveying drive assembly.

27. A material box, characterized in that, Including the consumable material conveying device (1000) according to any one of the preceding claims 1-26, and A main housing (20). The consumable material conveying device is connected to the main housing (20), and the main housing (20) is further used to accommodate the material tray (10).

28. The cartridge according to claim 27, wherein The material box further includes: A drying member (40). The drying member (40) is connected to the main housing (20) and is used to dry the consumable material on the material tray (10).

29. The cartridge according to claim 27, wherein The material box further includes: Consumable identification member (50), the consumable identification member (50) is connected to the main housing (20) and is opposite to the identification label on the material tray (10), and the consumable identification member (50) is used to read the information of the identification label.

30. The cartridge according to claim 27, wherein The main housing (20) includes a bottom case (21) and an upper case (22). The upper case (22) is used to cooperate with the bottom case (21) to enclose a receiving space. The consumable conveying device and the material tray (10) are both connected to the bottom case (21) and are located in the receiving space.

31. A 3D printer, characterized in that, It includes the consumable conveying device according to any one of claims 1-26 above, or includes the cartridge according to any one of claims 27-30 above.

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