Consumable buffering device, consumable conveying device and 3D printing equipment

Abstract

The utility model provides a consumable buffering device, a consumable conveying device and 3D printing equipment, the consumable buffering device comprises a first feeding piece, a second feeding piece and an elastic piece, the first feeding piece is provided with a consumable inlet channel, and the first feeding piece is configured to receive and convey consumables; the second feeding piece is provided with a consumable outlet channel, the consumable outlet channel is communicated with the consumable inlet channel, the second feeding piece is configured to receive and convey the consumables conveyed by the first feeding piece, and the second feeding piece can slide relative to the first feeding piece; one end of the elastic piece is elastically connected to the second feeding piece, and the elastic piece is configured to selectively provide buffering between the first feeding piece and the second feeding piece; when the elastic piece is in a natural state, a movable space is formed between the second feeding piece and the first feeding piece, and the movable space is configured to allow the second feeding piece to freely slide towards the side close to the first feeding piece.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and particularly to a consumable buffer device, a consumable conveying device, and a 3D printing device. Background Art

[0002] Most 3D printers convey the consumables in the consumable cartridge to the nozzle through an extrusion mechanism. For large 3D printers, generally multiple extrusion mechanisms need to be set up to provide sufficient pulling force to convey the consumables. However, it is difficult to control multiple extrusion mechanisms to work synchronously, and it is very easy for the consumables to be broken due to some extrusion mechanisms not working synchronously, thereby affecting the printing quality. Summary of the Utility Model

[0003] This application provides a consumable buffer device, a consumable conveying device, and a 3D printing device to solve the problem that the consumables are broken due to the asynchronous operation of multiple extrusion mechanisms in the known technology.

[0004] In a first aspect, this application provides a consumable buffer device, including a first feeding member, a second feeding member, and an elastic member; the first feeding member has a consumable inlet channel, and the first feeding member is configured to receive and convey the consumables; the second feeding member has a consumable outlet channel, the consumable outlet channel is communicated with the consumable inlet channel, the second feeding member is configured to receive and convey the consumables conveyed by the first feeding member, and the second feeding member is slidable relative to the first feeding member; one end of the elastic member is elastically connected to the second feeding member, and the elastic member is configured to selectively provide buffering between the first feeding member and the second feeding member; wherein, when the elastic member is in a natural state, an activity space is formed between the second feeding member and the first feeding member, and the activity space is configured to allow the second feeding member to freely slide towards the side close to the first feeding member.

[0005] In a possible implementation manner, along the conveying direction of the consumables, the first feeding member includes a first feeding part and a second feeding part, and the first feeding part, the second feeding part, and the second feeding member are communicated in sequence;

[0006] When the elastic member is in a natural state, the activity space is formed between the first feeding part and the second feeding member, and the activity space is configured to allow the second feeding member to freely slide towards the side close to the first feeding part;

[0007] The second feeding part is configured to guide the sliding of the second feeding member.

[0008] In a possible implementation, the second feeding part is configured to be fully extendable into the second feeding member. When the elastic member is in a natural state, at least a part of the second feeding part is exposed outside the second feeding member to form the moving space between the second feeding member and the first feeding part.

[0009] In a possible implementation, the other end of the elastic member away from the second feeding member is elastically connected to the first feeding part, and the elastic member is configured to provide an elastic force for the second feeding member to approach the first feeding part.

[0010] In a possible implementation, a first convex part is provided on the outer surface of the first feeding part, and a second convex part is provided on the outer surface of the second feeding member. One end of the elastic member is elastically connected to the first convex part, and the other end of the elastic member is elastically connected to the second convex part.

[0011] In a possible implementation, the consumable buffer device further includes a housing, an installation cavity is provided in the housing, and the second feeding member is slidably received in the installation cavity; during the sliding process of the second feeding member, the second feeding member is always located in the installation cavity.

[0012] In a possible implementation, the other end of the elastic member away from the second feeding member is elastically connected to the housing, and the elastic member is configured to provide an elastic force for the second feeding member to approach the first feeding part.

[0013] In a possible implementation, a discharging member is provided on the housing, the discharging member is located at one end of the second feeding member away from the first feeding member, the discharging member is in movable communication with the second feeding member, and is configured to guide the consumables conveyed by the second feeding member outside the housing.

[0014] In a possible implementation, the consumable buffer device further includes a guiding member, the guiding member is located at one end of the first feeding member away from the second feeding member, and the guiding member is in communication with the consumable inlet channel. One end of the guiding member away from the first feeding member is exposed outside the housing, and a feeding channel is provided on the end surface of the guiding member exposed outside the housing.

[0015] In a possible implementation, the number of the feeding channels is multiple, a plurality of feeding grooves are provided on the guiding member, the plurality of feeding grooves are correspondingly arranged with the plurality of feeding channels, and the extending directions of the plurality of feeding grooves are inclined to each other. One end of each feeding groove is respectively communicated with one feeding channel, and the other end of each feeding groove is communicated with the first feeding member.

[0016] In a possible implementation, a guiding portion is provided on the outer surface of the second feeding member. A guiding groove is formed on one side of the housing, and the guiding groove communicates with the installation cavity. The guiding portion is in sliding fit with the guiding groove, and one end of the guiding portion away from the second feeding member passes through the guiding groove and is exposed outside the housing.

[0017] In a second aspect, an embodiment of the present application further provides a consumable conveying device, including at least two extrusion mechanisms and the above-mentioned consumable buffer device. At least two of the extrusion mechanisms are arranged at intervals in sequence, and the consumable buffer device is located between two adjacent extrusion mechanisms.

[0018] In a third aspect, an embodiment of the present application further provides a 3D printing device, including a consumable cartridge, a nozzle device, and the above-mentioned consumable buffer device or the above-mentioned consumable conveying device. The consumable conveying device is configured to convey the consumables in the consumable cartridge to the nozzle device.

[0019] In the consumable buffer device of the present application, the second feeding member can slide relative to the first feeding member. When the traction forces on the consumables before entering the consumable buffer device and after leaving the consumable buffer device are uneven, the distance between the second feeding member and the first feeding member is adjusted by the sliding of the second feeding member relative to the first feeding member, thereby buffering the consumables with uneven forces. In addition, when the elastic member is in a natural state, an activity space is formed between the second feeding member and the first feeding member. The setting of the activity space enables the second feeding member not to directly collide with the first feeding member even when the second feeding member moves towards the first feeding member under the action of an external force. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the consumable buffer device of the present application in an embodiment, in which the elastic member is at its original length.

[0021] Figure 2 It is a three-dimensional schematic diagram of the consumable buffer device of the present application in an embodiment.

[0022] Figure 3 It is Figure 1 a cross-sectional schematic diagram of the second feeding member and the first feeding member of the consumable buffer device in

[0023] Figure 4 It is Figure 1 an exploded schematic diagram of the consumable buffer device in

[0024] Figure 5 It is Figure 1 a schematic structural diagram of the guiding member of the consumable buffer device in

[0025] Figure 6 It is Figure 2Schematic structural diagram of the consumable buffer device in the second housing part in one embodiment.

[0026] Figure 7 is Figure 1 Schematic structural diagram of the consumable buffer device in another perspective in one embodiment.

[0027] Figure 8 is Figure 1 Top view schematic diagram of the consumable buffer device in one embodiment, in which the second feeding member is communicated with the discharging member.

[0028] Figure 9 Schematic structural diagram of the consumable conveying device of the present application in one embodiment.

[0029] Figure 10 Schematic structural diagram of the 3D printing device of the present application in one embodiment. Main element symbol description:

[0030] 3D printing device 300

[0031] Consumable conveying device 200

[0032] Consumable buffer device 100

[0033] First direction X

[0034] Second direction Y

[0035] Third direction Z First surface P1 Second surface P2 Extrusion mechanism 1 Consumable cartridge 2 Nozzle device 3

[0036] Housing 10 First housing part 11 Installation opening 111 Clamping structure 112 First protrusion 113 Connection protrusion 114 Guide frame 115 Chute 1150 Clamping opening 116 Second housing part 12 Guide groove 120 Second protrusion 121 Installation cavity 13 First feeding member 20 Consumable inlet channel 201 First feeding part 21 First convex part 212 The first fastener 213 The second feeding part 22 The second feeding member 30 The consumable export channel 301 The discharging channel 31 The guiding part 32 The first abutting protrusion 33 The second convex part 34 The light-blocking protrusion 340 The second fastener 35 The elastic member 40 The feeding member 50 The discharging member 60 The second abutting protrusion 61 The detection assembly 70 The circuit board 71 The detection element 72 The material guiding member 80 The feeding channel 81 The first zone part 82 The second zone part 83 The third zone part 84 The fourth zone part 85 The feeding groove 850 The clamping groove 86 The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0037] The following description will describe the content of the present application more comprehensively with reference to the drawings. The exemplary embodiments shown in the drawings are those of the present application. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components.

[0038] The terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Furthermore, when used herein, "comprising" and / or "including" and / or "having", integers, steps, operations, components and / or components are included, but the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups is not excluded.

[0039] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In addition, unless clearly defined in the text, terms such as those defined in a general dictionary should be interpreted as having a meaning consistent with their meaning in the relevant art and the content of this application, and will not be interpreted as idealized or overly formal meanings.

[0040] The following further describes in detail the specific embodiments of this application with reference to the accompanying drawings.

[0041] As Figures 1 to 3 shown and in combination with Figure 9 , this embodiment provides a consumable buffer device 100, which is arranged between two extrusion mechanisms 1 for conveying the same consumable. When the two extrusion mechanisms 1 do not work synchronously, resulting in different traction forces applied to the consumable by the two extrusion mechanisms 1, the buffer device can buffer the consumable to avoid situations such as uneven stress on the front and rear parts of the consumable and material breakage.

[0042] The consumable buffer device 100 includes a first feeding member 20, a second feeding member 30, and an elastic member 40.

[0043] For the convenience of subsequent reading, this application introduces a first direction X, a second direction Y, and a third direction Z to describe the embodiments of this application. The first direction X, the second direction Y, and the third direction Z can be three non-parallel straight-line directions in space; further, the first direction X, the second direction Y, and the third direction Z can be three mutually perpendicular directions in a three-dimensional coordinate system (three-dimensional Cartesian coordinate system). In subsequent embodiments, the first direction X is taken as the X-axis direction of the coordinate axis of the three-dimensional coordinate system, the second direction Y is taken as the Y-axis direction of the coordinate axis of the three-dimensional coordinate system, and the third direction Z is taken as the Z-axis direction of the coordinate axis of the three-dimensional coordinate system as an example for description.

[0044] Along the first direction X, the first feeding member 20 and the second feeding member 30 are arranged in sequence. The first feeding member 20 has a consumable inlet channel 201, and the consumable inlet channel 201 is arranged at one end of the first feeding member 20 away from the second feeding member 30. The first feeding member 20 is configured to receive and convey the consumable, and the conveying direction of the consumable is parallel to the first direction X.

[0045] The second feeding member 30 has a consumable export channel 301, and the consumable export channel 301 is located at one end of the second feeding member 30 away from the first feeding member 20. The consumable export channel 301 communicates with the consumable inlet channel 201, so that the consumable enters the first feeding member 20 from the consumable inlet channel 201. The first feeding member 20 conveys the received consumable into the second feeding member 30, and then the second feeding member 30 conveys the consumable received from the first feeding member 20. Subsequently, the consumable leaves the second feeding member 30 from the consumable export channel 301. The second feeding member 30 is configured to be slidable relative to the first feeding member 20 along the first direction X. When the traction force provided by the extrusion mechanism 1 on one side of the first feeding member 20 to the consumable is greater than the traction force provided by the extrusion mechanism 1 on one side of the second feeding member 30 to the consumable, the consumable at the consumable buffer device 100 will be squeezed, and the consumable will drive the second feeding member 30 in contact with it to move away from the first feeding member 20, and extend the moving distance of the consumable in the first feeding member 20 and the second feeding member 30, thereby playing a buffering role for the consumable.

[0046] One end of the elastic member 40 is elastically connected to the second feeding member 30, and the elastic member 40 is configured to selectively provide buffering between the first feeding member 20 and the second feeding member 30. The elastic member 40 provides an elastic force to the second feeding member 30 to approach the first feeding member 20. When the second feeding member 30 moves away from the first feeding member 20, the elastic member 40 elastically deforms and then provides an elastic force to the second feeding member 30 to approach the first feeding member 20. Thus, when the traction force provided by the extrusion mechanism 1 on one side of the first feeding member 20 to the consumable is less than the traction force provided by the extrusion mechanism 1 on one side of the second feeding member 30 to the consumable, the second feeding member 30 moves towards the first feeding member 20 to reset under the action of the elastic force generated by the reset of the elastic member 40, and reduces the moving distance of the consumable in the first feeding member 20 and the second feeding member 30, thereby playing a buffering role for the consumable.

[0047] In addition, when the consumable buffer device 100 stops working or when the traction force provided by the extrusion mechanism 1 on one side of the first feeding member 20 to the consumable is equal to the traction force provided by the extrusion mechanism 1 on one side of the second feeding member 30 to the consumable, the elastic member 40 resets to its natural state. The elastic member 40 being in its natural state means that the elastic member 40 is at its original length, it does not undergo any elastic deformation, and it does not provide any elastic force to the second feeding member 30 connected to it. The second feeding member 30 also resets to its initial position under the action of the elastic force generated when the elastic member 40 resets, so that the first feeding member 20 can stably convey the consumable into the second feeding member 30, ensuring the stability when the consumable buffer device 100 works.

[0048] When the elastic member 40 is in its natural state, the elastic member 40 no longer provides an elastic force to the second feeding member 30, and the second feeding member 30 no longer moves. At this time, there is an activity space formed between the second feeding member 30 and the first feeding member 20, and the activity space is configured to allow the second feeding member 30 to freely slide toward the side close to the first feeding member 20 to avoid collision between the second feeding member 30 and the first feeding member 20.

[0049] Thus, in the consumable buffer device 100 of the present application, the second feeding member 30 can slide relative to the first feeding member 20 to adjust the distance between the second feeding member 30 and the first feeding member 20 by sliding the second feeding member 30 relative to the first feeding member 20 when the traction forces on the consumables before entering the consumable buffer device 100 and after leaving the consumable buffer device 100 are uneven, thereby buffering the unevenly stressed consumables. In addition, when the elastic member 40 is in its natural state, an activity space is formed between the second feeding member 30 and the first feeding member 20. The setting of the activity space enables the second feeding member 30 not to directly collide with the first feeding member 20 even if it moves toward the first feeding member 20 under the action of an external force.

[0050] Please further combine Figure 1 and Figure 3 , in an embodiment, along the first direction X, the first feeding member 20 includes a first feeding portion 21 and a second feeding portion 22, and the extending directions of the first feeding portion 21 and the second feeding portion 22 are also parallel to the first direction X.

[0051] The first feeding portion 21, the second feeding portion 22, and the second feeding member 30 are sequentially connected to convey the consumables into the second feeding member 30. The second feeding portion 22 is configured to guide the sliding of the second feeding member 30 to improve the sliding stability of the second feeding member 30.

[0052] Further, the second feeding portion 22 is configured to be completely extendable into the second feeding member 30, and one end of the second feeding portion 22 away from the first feeding portion 21 extends into the second feeding member 30, which not only conveys the consumables conveyed by the first feeding member 20 into the second feeding member 30, but also guides the sliding of the second feeding member 30 through the second feeding portion 22 extending into the second feeding member 30.

[0053] When the elastic member 40 is in its natural state, at least a part of the second feeding portion 22 is exposed outside the second feeding member 30, so that the second feeding member 30 and the first feeding portion 21 are spaced apart in the first direction X, and thus an activity space is formed between the second feeding member 30 and the first feeding portion 21.

[0054] Thus, when the elastic member 40 is in the natural state, the elastic member 40 no longer provides an elastic force to the second feeding member 30, and the second feeding member 30 no longer moves. At this time, at least a part of the second feeding portion 22 is exposed outside the second feeding member 30, ensuring that when the second feeding member 30 suddenly slides towards the first feeding member 20 under the action of an external force, the exposed second feeding portion 22 provides a certain distance between the second feeding member 30 and the first feeding portion 21 for the second feeding member 30 to move, avoiding a direct collision between the second feeding member 30 and the first feeding portion 21.

[0055] In this embodiment, a discharge channel 31 is provided on the second feeding member 30. The discharge channel 31 extends along the first direction X and penetrates the second feeding member 30. The discharge channel 31 is communicated with the consumable material outlet channel 301. The inner diameter of the discharge channel 31 is larger than the outer diameter of the second feeding portion 22, and the extension length of the discharge channel 31 is greater than the extension length of the second feeding portion 22, so as to ensure that the second feeding portion 22 can be completely accommodated in the second feeding member 30, thereby avoiding a collision between the second feeding member 30 and the first feeding member 20.

[0056] Along the first direction X, the outer diameters of the respective sections of the second feeding portion 22 may be the same or different, as long as it is ensured that the maximum outer diameter of the second feeding portion 22 is smaller than the inner diameter of the discharge channel 31.

[0057] It can be understood that in other embodiments, the second feeding portion 22 may also be configured to be sleeved on the outer peripheral surface of the second feeding member 30 to play a guiding role in the sliding of the second feeding member 30.

[0058] Please also combine Figures 4 to 6 and refer to Figure 1 and Figure 2 In an embodiment, the consumable material buffer device 100 further includes a housing 10, and an installation cavity 13 is provided in the housing 10. Along the third direction Z, the housing 10 includes a first housing portion 11 and a second housing portion 12 connected to each other, and the first housing portion 11 and the second housing portion 12 enclose to form the installation cavity 13.

[0059] The first feeding member 20 is fixed in the first housing portion 11. The second feeding member 30 is located in the first housing portion 11 and is slidably connected to the first housing portion 11.

[0060] Further, the consumable material buffer device 100 further includes a guiding member 80. The guiding member 80 is located at one end of the first feeding member 20 away from the second feeding member 30, and the guiding member 80 is communicated with the consumable material inlet channel 201 to convey the consumable material into the first feeding member 20 through the guiding member 80.

[0061] One end of the guiding member 80 away from the first feeding member 20 is exposed outside the first housing portion 11, and a feeding channel 81 is provided on the end surface of the end of the guiding member 80 exposed outside the housing 10.

[0062] Specifically, along the conveying direction of the consumable, the material guiding member 80 includes a first section 82, a second section 83, a third section 84, and a fourth section 85 that are sequentially connected. The first section 82, the second section 83, the third section 84, and the fourth section 85 are integrally formed.

[0063] The first section 82 is a rectangular structure arranged along the third direction Z. The second section 83 protrudes outward along the first direction X from the surface of the first section 82 on the side close to the first feeding member 20. The third section 84 protrudes outward along the first direction X from the surface of the second section 83 on the side close to the first feeding member 20.

[0064] Both the second section 83 and the third section 84 are rectangular structures. The outer contours of the first section 82 and the third section 84 both exceed the outer contour of the second section 83, so that a clamping groove 86 is formed between the first section 82 and the third section 84 and is arranged around the outer peripheral surface of the second section 83.

[0065] It can be understood that the shapes of the first section 82, the second section 83, and the third section 84 can also be other shapes such as circular.

[0066] Along the first direction X, an installation opening 111 is provided on the side plate of the first housing part 11 located on the feeding side. The shape of the installation opening 111 is rectangular, and the size of the installation opening 111 is smaller than the size of the side plate where it is located, so that a clamping structure 112 is formed on the side plate of the first housing part 11 located on the feeding side. The shape of the clamping structure 112 is generally "U" - shaped, and the clamping structure 112 is clamped in the clamping groove 86. When the clamping structure 112 is clamped in the clamping groove 86, the inner peripheral surface of the clamping structure 112 abuts against the groove wall of the clamping groove 86, and the clamping structure 112 is clamped by the first section 82 and the third section 84, thereby realizing the limit between the material guiding member 80 and the first housing part 11.

[0067] Correspondingly, the second housing part 12 also forms a clamping structure 112 to limit the material guiding member 80 through the first housing part 11 and the second housing part 12 simultaneously. The principle of the second housing part 12 forming the clamping structure 112 is the same as that of the first housing part 11 and will not be elaborated here.

[0068] In this embodiment, a feeding channel 81 is provided on the side of the first section 82 away from the second section 83. Along the first direction X, the feeding channel 81 penetrates through the first section 82, the second section 83, and the third section 84. The consumable buffer device 100 further includes a feeding member 50. The feeding member 50 is a columnar structure with openings at both ends and a hollow interior. The feeding member 50 is clamped in the feeding channel 81, and a sealed setting is provided between the outer peripheral surface of the feeding member 50 and the inner peripheral surface of the feeding channel 81.

[0069] In particular, the number of the feed channels 81 is multiple, and each feed channel 81 accommodates a feed member 50. The multiple feed channels 81 can be sequentially arranged at intervals along the second direction Y, or can be distributed in a rectangular array. The specific number and arrangement mode thereof can be adaptively selected according to actual design requirements.

[0070] It can be understood that in other embodiments, the number of the feed channels 81 can also be one.

[0071] Please also combine Figures 4 to 6 , in an embodiment, the fourth region 85 protrudes outward along the first direction X from the surface of the third region 84 close to the first feeding member 20, and one end of the fourth region 85 far from the third region 84 is communicated with the consumable inlet channel 201. A plurality of feed grooves 850 are provided on the fourth region 85. The plurality of feed grooves 850 are correspondingly arranged with the plurality of feed channels 81, and the extending directions of the plurality of feed grooves 850 are inclined to each other. One end of each feed groove 850 is respectively communicated with a feed channel 81, and the other end of each feed groove 850 is communicated with the consumable inlet channel 201, so that the consumables entering from different feed channels 81 can converge in the first feeding member 20.

[0072] In this embodiment, the number of the feed channels 81 is four, and the number of the feed grooves 850 is also four. The shape of the fourth region 85 is generally conical, and has a first surface P1 and a second surface P2 oppositely arranged along the third direction Z. Both the first surface P1 and the second surface P2 are inclined with respect to the first direction X.

[0073] Along the conveying direction of the consumable, the first surface P1 is inclined forward and upward, and the second surface P2 is inclined forward and downward. Two feed grooves 850 are provided on the first surface P1 at intervals along the second direction Y, and the extending directions of the two feed grooves 850 provided on the first surface P1 are the same as the inclined direction of the first surface P1. Two feed grooves 850 are provided on the second surface P2 at intervals along the second direction Y, and the extending directions of the two feed grooves 850 provided on the second surface P2 are the same as the inclined direction of the second surface P2.

[0074] Further, a first protrusion 113 protrudes along the third direction Z from the side of the first housing portion 11 close to the second housing portion 12. The end surface of one end of the first protrusion 113 close to the second housing portion 12 is inclined and abuts against the first surface P1, so as to close the two feed grooves 850 located on the first surface P1 by the first protrusion 113. The first protrusion 113 can be formed by stamping from the surface of the first housing portion 11 far from the second housing portion 12.

[0075] Accordingly, on the side of the second housing portion 12 close to the first housing portion 11, a second protrusion 121 protrudes along the third direction Z. The end surface of one end of the second protrusion 121 close to the first housing portion 11 is inclined and abuts against the second surface P2, so as to close the two feed grooves 850 located on the second surface P2 by the second protrusion 121. The second protrusion 121 can be formed by stamping on the surface of the second housing portion 12 away from the first housing portion 11.

[0076] Please also combine with Figure 7 and refer to Figure 1 and Figure 4 In an embodiment, a first convex portion 212 is provided on the outer surface of the first feeding portion 21. The number of the first convex portions 212 is two. Along the second direction Y, the two first convex portions 212 are respectively arranged on the opposite sides of the first feeding portion 21. Two connecting protrusions 114 protrude from the bottom wall of the inner cavity of the first housing portion 11, and the two connecting protrusions 114 are arranged corresponding to the two first convex portions 212. After the first convex portion 212 and the connecting protrusion 114 are both perforated, a first fastening member 213 passes through them, so that the first feeding portion 21 is fixed to the first housing portion 11 by the first fastening member 213. The first fastening member 213 is a part such as a screw.

[0077] Furthermore, a second convex portion 34 is provided on the outer surface of the second feeding member 30. The number of the second convex portions 34 is two. Along the second direction Y, the two second convex portions 34 are respectively arranged on the opposite sides of the second feeding member 30. After the two second convex portions 34 are both perforated, a second fastening member 35 passes through them, and the second fastening member 35 is a part such as a screw.

[0078] There are two elastic members 40, and the elastic members 40 are springs. Along the second direction Y, the two elastic members 40 are respectively arranged on the opposite sides of the second feeding member 30. The extending direction of the elastic member 40 is parallel to the first direction X. One end of the elastic member 40 is connected to the first fastening member 213 and is clamped between the first convex portion 212 and the end of the first fastening member 213. The other end of the elastic member 40 is connected to the second fastening member 35 and is clamped between the second convex portion 34 and the end of the second fastening member 35. In this way, when the second feeding member 30 moves away from the first feeding member 20, the elastic member 40 is stretched and provides an elastic force for the second feeding member 30 to approach the first feeding portion 21.

[0079] It can be understood that in other embodiments, the other end of the elastic member 40 away from the second feeding member 30 is elastically connected to the inner wall of the first housing portion 11 close to the discharge side. In this way, when the second feeding member 30 moves away from the first feeding member 20, the elastic member 40 is compressed and provides an elastic force for the second feeding member 30 to approach the first feeding portion 21.

[0080] Please also combine with Figure 7 and Figure 8 and refer to Figure 2, in one embodiment, along the second direction Y, guide frames 115 are provided on the inner walls of the two adjacent sides of the first housing part 11, and the second feeding member 30 is located between the two guide frames 115. A sliding groove 1150 is formed on the adjacent side of the two guide frames 115, and the two second convex parts 34 are respectively in sliding fit with the two sliding grooves 1150, and the opposite sides of the two second convex parts 34 respectively abut against the two adjacent sides of the two guide frames 115 to guide the sliding of the second feeding member 30.

[0081] Further, a guiding part 32 is provided on the outer surface of the second feeding member 30, and the guiding part 32 protrudes upward along the third direction Z from the side of the second feeding member 30 close to the second housing part 12. A guiding groove 120 is formed on the side of the second housing part 12 away from the first housing part 11, and the guiding groove 120 extends along the first direction X and communicates with the installation cavity 13. The guiding part 32 is partially located in the guiding groove 120 and is in sliding fit with the guiding groove 120, and the end of the guiding part 32 away from the second feeding member 30 passes through the guiding groove 120 and is exposed outside the housing 10.

[0082] In this way, the guiding part 32 provided on the second feeding member 30 is exposed outside the housing 10, which can not only observe the position of the second feeding member 30, but also drive the second feeding member 30 to move by pushing and pulling the guiding part 32.

[0083] Please also combine with Figures 6 to 8 , in one embodiment, a discharging member 60 is provided on the housing 10, and the discharging member 60 is a cylindrical structure with openings at both ends and a hollow interior. The discharging member 60 is located at the end of the second feeding member 30 away from the first feeding member 20. The discharging member 60 is at least partially located in the installation cavity 13, and the discharging member 60 is at least partially exposed outside the housing 10. The area of the second feeding member 30 and the discharging member 60 located in the installation cavity 13 is in movable communication, so as to guide the consumables conveyed by the second feeding member 30 to leave the housing 10 through the discharging member 60. The arrangement of the discharging member 60 enables the second feeding member 30 to guide the consumables outside the housing 10 without sliding to the end away from the first feeding member 20 to leave the housing 10, so that the second feeding member 30 is always located in the installation cavity 13 during the sliding process, improving the working stability of the second feeding member 30.

[0084] Specifically, a clamping opening 116 is formed on the side of the first housing part 11 away from the clamping structure 112. The shape of the clamping opening 116 is semicircular, and the discharging member 60 is partially clamped in the clamping opening 116 to fix the discharging member 60 on the first housing part 11. The end of the discharging member 60 away from the second feeding member 30 passes through the clamping opening 116, so that the discharging member 60 is partially exposed outside the housing 10.

[0085] In addition, the second housing portion 12 is also provided with a clamping opening 116. When the first housing portion 11 is connected to the second housing portion 12, the remaining portion of the discharging member 60 is received in the clamping opening 116 provided in the second housing portion 12, and the discharging member 60 is clamped between the first housing portion 11 and the second housing portion 12.

[0086] In this way, when the second feeding member 30 moves towards the discharging member 60, the discharging member 60 can extend into the second feeding member 30, thereby realizing the communication between the second feeding member 30 and the discharging member 60.

[0087] In addition, a first abutting protrusion 33 is annularly provided on the inner peripheral surface of the second feeding member 30, and a second abutting protrusion 61 is annularly provided on the outer peripheral surface of the discharging member 60. The second abutting protrusion 61 is used to abut against the first abutting protrusion 33, so that when the second feeding member 30 moves to communicate with the discharging member 60, the discharging member 60 can abut against the second feeding member 30 to limit the maximum moving position of the second feeding member 30, ensuring that the second feeding member 30 always moves within the installation cavity 13.

[0088] It can be understood that in other embodiments, the inner wall of the side of the first housing portion 11 where the clamping opening 116 is provided abuts against the second feeding member 30 to limit the maximum moving position of the second feeding member 30.

[0089] Please refer to Figure 7 again, and refer to Figure 1 and Figure 9 In one embodiment, the consumable buffer device 100 further includes a detection component 70 for detecting the moving position of the second feeding member 30. The detection component 70 includes a circuit board 71 and two detection elements 72.

[0090] The circuit board 71 is fixed in the first bottom cover, the circuit board 71 is disposed near the discharging side of the first housing portion 11 and is located below the second feeding member 30. Along the first direction X, the two detection elements 72 are spaced apart on the circuit board 71, and both are electrically connected to the circuit board 71. The detection element 72 is a photoelectric switch, and a light-blocking protrusion 340 is convexly provided on the bottom end surface of the second convex portion 34. When the light-blocking protrusion 340 moves with the second feeding member 30 to pass by the photoelectric switch, the light-blocking protrusion 340 blocks the detection light emitted from the photoelectric switch, thereby realizing the detection of the current position of the second feeding member 30.

[0091] Particularly, when the light-blocking protrusion 340 blocks the detection light emitted from one photoelectric switch, the elastic member 40 is in its original length. When the light-blocking protrusion 340 blocks the detection light emitted from the other photoelectric switch, the second feeding member 30 communicates with the discharging member 60. At this time, the second feeding member 30 moves to the limit position, and the detection element 72 can send a detection signal of the second feeding member 30 moving to the limit position to a control device (not shown in the figure), and the control device then adjusts the working states of the two extrusion mechanisms 1.

[0092] It can be understood that the detection element 72 can also adopt other electronic components such as a laser rangefinder that can detect the position of the second feeding member 30.

[0093] Such as Figure 9 As shown, the embodiment of the present application also provides a consumable conveying device 200, including at least two extrusion mechanisms 1 and the above-mentioned consumable buffer device 100. The extrusion mechanism 1 is used to provide a traction force to the consumable to pull the consumable to move, and the specific structure of the extrusion mechanism 1 is not limited in the present application. Along the first direction X, at least two extrusion mechanisms 1 are arranged at intervals in sequence, and the consumable buffer device 100 is located between two adjacent extrusion mechanisms 1.

[0094] It can be understood that the number of the extrusion mechanisms 1 can be two, or three or other numbers. The specific number of the extrusion mechanisms 1 can be selected according to the actual printing requirements. When the number of the extrusion mechanisms 1 exceeds two, a consumable buffer device 100 can be arranged between any two adjacent extrusion mechanisms 1 to ensure the stability of the consumable transmission.

[0095] Such as Figure 10 As shown, and in combination with Figure 9 The embodiment of the present application also provides a 3D printing device 300, including a consumable cartridge 2, a nozzle device 3, and the above-mentioned consumable buffer device 100 or the above-mentioned consumable conveying device 200.

[0096] The consumable cartridge 2 is used to store the consumable, and the consumable conveying device 200 conveys the consumable in the consumable cartridge 2 to the nozzle device 3, and then the consumable is ejected along a preset path through the nozzle device 3 and solidified to form a printed part.

[0097] In the above text, the specific implementation manners of the present application are described with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific implementation manners of the present application without departing from the scope of the present application. These changes and substitutions all fall within the scope defined by the present application.

Claims

1. A consumables buffer device, characterized in that: include: A first feeding member (20), the first feeding member (20) having a consumable material inlet channel (201), and the first feeding member (20) is configured to receive and convey consumable materials; A second feeding member (30), the second feeding member (30) having a consumable material outlet channel (301), the consumable material outlet channel (301) being in communication with the consumable material inlet channel (201), the second feeding member (30) being configured to receive and convey the consumable material conveyed by the first feeding member (20), and the second feeding member (30) being slidable relative to the first feeding member (20); an elastic member (40), one end of which is elastically connected to the second feeding member (30), and the elastic member (40) is configured to selectively provide a buffer between the first feeding member (20) and the second feeding member (30); Wherein, when the elastic member (40) is in a natural state, a movable space is formed between the second feeding member (30) and the first feeding member (20), and the movable space is configured to allow the second feeding member (30) to slide freely toward a side close to the first feeding member (20).

2. The consumable material buffer device according to claim 1, characterized in that: Along the conveying direction of the consumable material, the first feeding member (20) comprises a first feeding portion (21) and a second feeding portion (22), and the first feeding portion (21), the second feeding portion (22), and the second feeding member (30) are connected in sequence; When the elastic member (40) is in a natural state, the movable space is formed between the first feeding portion (21) and the second feeding member (30), and the movable space is configured to allow the second feeding member (30) to slide freely toward a side close to the first feeding portion (21); The second feeding portion (22) is configured to guide the second feeding member (30) to slide.

3. The consumable material buffer device according to claim 2, characterized in that: The second feeding portion (22) is constructed to be able to fully extend into the second feeding piece (30); when the elastic piece (40) is in a natural state, the second feeding portion (22) is at least partially exposed outside the second feeding piece (30), so as to form the activity space between the second feeding piece (30) and the first feeding portion (21).

4. The consumable material buffer device according to claim 2, characterized in that: The other end of the elastic member (40) away from the second feeding member (30) is elastically connected to the first feeding portion (21), and the elastic member (40) is configured to provide an elastic force for the second feeding member (30) to approach the first feeding portion (21).

5. The consumable material buffer device according to claim 4, characterized in that: The outer surface of the first feeding part (21) is provided with a first convex part (212), the outer surface of the second feeding part (30) is provided with a second convex part (34), one end of the elastic part (40) is elastically connected to the first convex part (212), and the other end of the elastic part (40) is elastically connected to the second convex part (34).

6. The consumable material buffer device according to claim 2, characterized in that: The consumable material buffer device (100) further comprises a shell (10), wherein a mounting cavity (13) is provided in the shell (10), and the second feeding member (30) can be slidably received in the mounting cavity (13); during the sliding process of the second feeding member (30), the second feeding member (30) is always located in the mounting cavity (13).

7. The consumable material buffer device according to claim 6, characterized in that: The other end of the elastic member (40) away from the second feeding member (30) is elastically connected to the housing (10), and the elastic member (40) is configured to provide an elastic force for the second feeding member (30) to approach the first feeding portion (21).

8. The consumable material buffer device according to claim 6, characterized in that: The shell (10) is provided with a discharge piece (60), and the discharge piece (60) is located at one end of the second feeding piece (30) away from the first feeding piece (20). The discharge piece (60) is movably connected to the second feeding piece (30) and is configured to guide the consumables transported by the second feeding piece (30) to the outside of the shell (10).

9. The consumable material buffer device according to claim 6, characterized in that: The consumable material buffer device (100) further comprises a material guide member (80), wherein the material guide member (80) is located at one end of the first material feeding member (20) away from the second material feeding member (30), and the material guide member (80) is connected to the consumable material inlet channel (201), and the end of the material guide member (80) away from the first material feeding member (20) is exposed to the shell (10), and a feed channel (81) is provided on the end surface of the end of the material guide member (80) exposed to the shell (10).

10. The consumable material buffer device according to claim 9, characterized in that: There are multiple feed channels (81), and the material guide member (80) is provided with multiple feed troughs (850). The multiple feed troughs (850) are arranged corresponding to the multiple feed channels (81), and the extension directions of the multiple feed troughs (850) are arranged obliquely to each other. One end of each feed trough (850) is connected to one feed channel (81), and the other end of each feed trough (850) is connected to the first feeding member (20).

11. The consumable material buffer device according to claim 6, characterized in that: A guide portion (32) is provided on the outer surface of the second feeding piece (30), a guide groove (120) is provided on one side of the shell (10), the guide groove (120) is connected to the installation cavity (13), the guide portion (32) is slidably matched with the guide groove (120), and one end of the guide portion (32) away from the second feeding piece (30) passes through the guide groove (120) and is exposed to the shell (10).

12. A consumable material conveying device, characterized in that: It comprises at least two extrusion mechanisms (1), and a consumable material buffer device (100) as claimed in any one of claims 1 to 11, wherein at least two of the extrusion mechanisms (1) are arranged in sequence and spaced apart, and the consumable material buffer device (100) is located between two adjacent extrusion mechanisms (1).

13. A 3D printing device, characterized in that: It comprises a consumable box (2), a nozzle device (3), and a consumable buffer device (100) as described in any one of claims 1 to 11 or a consumable conveying device (200) as described in claim 12, wherein the consumable conveying device (200) is configured to convey the consumables in the consumable box (2) to the nozzle device (3).

Images