Material feeding device and 3D printer

Abstract

According to the material feeding device and the 3D printer, extruded materials are supported mainly through an opening and closing piece, so that the materials are stacked into a cluster, the occupied space of the materials is reduced, the weight of the materials is concentrated, the falling position of the materials is more accurate, and the materials are prevented from falling to a printing platform. According to the main technical scheme, the material feeding device comprises a supporting body; the opening and closing assembly comprises at least one opening and closing piece, the opening and closing piece comprises a bearing face, the opening and closing piece is movably connected with the supporting body, and the positions of the opening and closing piece comprise the first position and the second position; and the acting assembly is at least connected with the opening and closing piece, the bearing face is used for bearing the materials when the opening and closing piece is located at the second position, and the acting assembly is at least used for driving the opening and closing piece to move from the second position to the first position so that the materials on the bearing face can fall off. The material delivery device is mainly used for material delivery.

Description

Technical Field

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

[0002] In an FDM printer that can replace consumables, multiple consumables are introduced into the consumable channel of the nozzle after passing through their respective extruders. When it is necessary to replace consumables, the original consumables are cut off from the consumable channel to leave the molten section of the original consumables in the consumable channel, and the unmelted original consumables are extracted, and then new consumables are fed in. In order to ensure the accuracy of the model, the original consumables retained in the consumable channel need to be squeezed out, and then new consumables are used for printing.

[0003] When extruding the raw material, since there is no support under the print head, the material will continue to extrude downward in the form of a long and thin strip, resulting in the extruded raw material being longer and occupying a large space. Moreover, due to the dispersed weight, the posture is unstable when falling and it is easy to fall onto the printing platform. Utility Model Content

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

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0006] On the one hand, the utility model provides a material delivery device, comprising:

[0007] Support body;

[0008] An opening and closing assembly, the opening and closing assembly includes at least one opening and closing member, the opening and closing member includes a receiving surface, the opening and closing member is movably connected to the support body, and the position of the opening and closing member includes a first position and a second position;

[0009] The acting component is at least connected to the opening and closing member, the receiving surface is used to receive the material when the opening and closing member is in the second position, and the acting component is at least used to drive the opening and closing member to move from the second position to the first position to make the material on the receiving surface fall off.

[0010] On the other hand, the utility model also provides a 3D printer, comprising any one of the above-mentioned material delivery devices.

[0011] The utility model proposes a material delivery device and a 3D printer, which mainly support the extruded material through the opening and closing parts, so that the material is piled into a ball, reducing the space occupied by the material, and the weight of the material is concentrated, so that the material falls accurately and avoids the material from falling onto the printing platform. In the prior art, when the raw consumables are extruded, since there is no support under the print head, the consumables will continue to extrude downwards and form a long and thin strip, resulting in the extruded raw consumables being longer in length and occupying a large space. Moreover, due to the dispersed weight, the posture is unstable when falling and it is easy to fall onto the printing platform. Compared with the prior art, in the present application document, when it is necessary to replace the consumables, the acting component moves the opening and closing part to the second position, the nozzle moves to be opposite to the receiving surface, and extrude the material toward the receiving surface. The material will be accumulated into a ball under the action of the bearing surface, and then the acting component moves the opening and closing part to the first position. Through external force or the change of the position of the opening and closing part itself, the material on the receiving surface falls off and then falls under the opening and closing part. On the one hand, the material is clumped by supporting the material, which reduces the space occupied by the material and avoids the long strip material occupying a large space. On the other hand, the material is accumulated in a ball shape, which concentrates the weight of the material. After the material falls off the bearing surface, it can fall into the specified range approximately by free fall, avoiding the problem of uncontrollable falling posture and direction caused by the dispersion of material weight, and then avoiding the material from falling into the printing area and the printing platform to avoid affecting the printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the three-dimensional structure of a material delivery device provided by an embodiment of the utility model when the opening and closing member is in the first position;

[0013] Figure 2 A schematic diagram of the three-dimensional structure of a material delivery device provided by an embodiment of the utility model at a first viewing angle when the opening and closing member is in a first position;

[0014] Figure 3 A schematic diagram of the three-dimensional structure of a material delivery device provided by an embodiment of the utility model at a second viewing angle when the opening and closing member is in a first position;

[0015] Figure 4 A schematic diagram of the three-dimensional structure of a material delivery device provided by an embodiment of the utility model at a third viewing angle when the opening and closing member is in a first position;

[0016] Figure 5 A schematic diagram of the three-dimensional structure of a material delivery device provided by an embodiment of the utility model when the opening and closing member is in the second position;

[0017] Figure 6 A schematic diagram of the explosion structure of a material delivery device provided in an embodiment of the utility model;

[0018] Figure 7The present invention is a schematic cross-sectional view of a material delivery device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific optional implementation methods, structures, features and effects of the material delivery device proposed in accordance with the present invention in combination with the accompanying drawings and preferred embodiments.

[0020] On the one hand, if Figure 1-5 As shown, the embodiment of the utility model provides a material delivery device for a 3D printer, comprising:

[0021] Support body 100;

[0022] An opening and closing assembly, the opening and closing assembly includes at least one opening and closing member 200, the opening and closing member 200 includes a receiving surface, the opening and closing member 200 is movably connected to the support body 100, and the position of the opening and closing member 200 includes a first position and a second position;

[0023] The acting component is at least connected to the opening and closing member 200, and the receiving surface is used to receive the material when the opening and closing member 200 is in the second position. The acting component is at least used to drive the opening and closing member 200 to move from the second position to the first position to make the material on the receiving surface fall off.

[0024] The material delivery device can be used for receiving and delivering waste materials in a 3D printer. The 3D printer mainly includes a printing platform, a main support structure, a nozzle and an X-axis assembly. The printing platform and the X-axis assembly are both connected to the main support structure by driving, and the nozzle is connected to the X-axis assembly by driving, and the nozzle is located above the printing platform. The main support structure and the X-axis assembly cooperate to drive the nozzle and the printing platform to move relative to each other to achieve 3D printing. The support body 100 can be connected to the main support structure or the X-axis assembly, or fixed by an additional fixing device, or it can be directly fixed on the support table of the 3D printer. The setting position of the material delivery device should ensure that it does not occupy or occupies as little printing space as possible, and it is necessary to ensure that the receiving surface of the opening and closing member 200 can be opposite to the nozzle, that is, it is located within the range of motion of the nozzle to receive the material. For example, when the nozzle is opposite to the receiving surface, the nozzle is located at the extreme position in the X-axis direction.

[0025] The opening and closing member 200 can move in various ways relative to the support body 100, such as flipping, rotation, linear movement, etc. The way in which the material falls off the receiving surface is related to the different movement modes of the opening and closing member 200. For example, the opening and closing member 200 can be flipped so that the receiving surface loses its supporting capacity, and then the material actively falls off. Alternatively, the opening and closing member 200 can be moved so that the material is pushed by a fixed structure such as the support body 100, and then falls off from one side of the opening and closing member 200. Through the movement of the opening and closing member 200, the material is separated from the receiving surface by falling downward, and there will be no obvious lateral movement. Then, the material can be collected under the opening and closing member 200, such as by setting up a collection box. The material does not move laterally, thereby ensuring that the material only falls below the opening and closing member 200, and does not move laterally to the printing area, thereby avoiding the problem of uncontrollable falling position such as material rolling or falling.

[0026] The action component can be of various structures, and is intended to enable the opening and closing member 200 to move in a preset manner, such as the action component driving the opening and closing member 200 to flip, move linearly or rotate. The action component can have a driving member itself, and the driving member is connected to the main controller of the 3D printer. The main controller controls the operation of the driving member, and then actively drives the opening and closing member 200 to move between the first position and the second position. Alternatively, the action component may not have the function of active driving, and only move by external force, and then drive the opening and closing member 200 to move between the first position and the second position, such as using a moving nozzle to push at least part of the structure of the action component to move, and then drive the opening and closing member 200 to move. Alternatively, the action component can store and release energy, and the action component can move under the action of external force to store energy, and then move the opening and closing member 200 by releasing energy. The following will be described in detail in conjunction with several specific embodiments.

[0027] When it is necessary to replace the consumables, the nozzle is controlled to move toward the receiving surface. Before the nozzle reaches a position vertically opposite to the receiving surface, the action component moves under external force or actively applies power to drive the opening and closing member 200 to move to the second position. The opening and closing member 200 moves to the second position before the nozzle reaches a position opposite to the receiving surface, or the opening and closing member 200 moves to the second position at the same time as the nozzle reaches a position opposite to the receiving surface. The nozzle extrude the material toward the receiving surface, and the material will accumulate into a ball on the receiving surface. Then the nozzle moves toward the printing area and away from the receiving surface. The action component moves the opening and closing member 200 under its own energy storage or actively applies power to move the opening and closing member 200, driving the opening and closing member 200 to move to the first position, thereby causing the balled material to fall off naturally, or causing the material to fall off due to the push of the support body 100.

[0028] The utility model proposes a material delivery device, which mainly supports the extruded material through the opening and closing parts, so that the material is piled into a ball, reducing the space occupied by the material, and the weight of the material is concentrated, so that the material falls accurately and avoids falling onto the printing platform. In the prior art, when the raw consumables are extruded, since there is no support under the print head, the consumables will continue to extrude downwards and form a thin and long strip, resulting in the extruded raw consumables being longer in length and occupying a large space. Moreover, due to the dispersed weight, the posture is unstable when falling and it is easy to fall onto the printing platform. Compared with the prior art, in the present application document, when it is necessary to replace the consumables, the acting component moves the opening and closing part to the second position, the nozzle moves to be opposite to the receiving surface, and extrude the material toward the receiving surface. The material will be accumulated into a ball under the action of the bearing surface, and then the acting component moves the opening and closing part to the first position. Through external force or the change of the position of the opening and closing part itself, the material on the receiving surface falls off and then falls under the opening and closing part. On the one hand, the material is clumped by supporting the material, which reduces the space occupied by the material and avoids the long strip material occupying a large space. On the other hand, the material is accumulated in a ball shape, which concentrates the weight of the material. After the material falls off, it can fall into the specified range approximately by free fall, avoiding the problem of uncontrollable falling posture and direction caused by the dispersion of material weight, and then avoiding the material from falling into the printing area and the printing platform to avoid affecting the printing process.

[0029] Two moving modes of the opening and closing member 200 are exemplified below. It should be understood that the moving modes of the opening and closing member 200 are not limited to the following two modes.

[0030] In an optional implementation, the orientation of the receiving surface when the opening and closing member 200 is located in the first position is different from the orientation of the receiving surface when the opening and closing member 200 is located in the second position.

[0031] The orientation of the receiving surface refers to the direction of the ray that is perpendicular to the receiving surface and points away from the receiving surface. When the opening and closing member 200 is in the second position, the orientation of the receiving surface can be vertically upward, that is, the receiving surface can be parallel to the horizontal plane, and then the material can be received. The opening and closing member 200 and the support body 100 can be rotatably connected. After receiving the material, the action component drives the opening and closing member 200 to rotate so that the orientation of the receiving surface changes. The degree of orientation change can be set as needed to ensure that the material can fall off. When the opening and closing member 200 is in the first position, the orientation of the receiving surface can be inclined upward, and then the material can slide under the action of gravity and then detach from the edge of the opening and closing member 200. In an optional embodiment, the angle between the orientation of the receiving surface when the opening and closing member 200 is in the first position and the orientation of the receiving surface when the opening and closing member 200 is in the second position is a preset angle, and the preset angle is not greater than 180 degrees and not less than 30 degrees, such as 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 180 degrees, etc. That is, when the opening and closing member 200 is in the first position, the orientation of the receiving surface can be vertically downward or inclined downward, or inclined upward, or toward the horizontal direction. The angle of the opening and closing member 200 changes, so that the material will be separated from the opening and closing member 200 during the movement of the opening and closing member 200 to the first position. The setting of the above preset angle, on the one hand, makes the lateral displacement of the material small after it is separated from the closing member 200, and the material can fall downward in an approximately vertical direction, so that the material falling position is concentrated, which is convenient for material collection. On the other hand, it is ensured that the material can fall off the opening and closing member 200, and the material will not be retained on the opening and closing member 200 due to insufficient rotation angle of the opening and closing member 200. For example, in an optional embodiment, the orientation of the receiving surface when the opening and closing member 200 is in the first position is opposite to the orientation of the receiving surface when the opening and closing member 200 is in the second position. When the opening and closing member 200 is in the second position, the receiving surface is horizontal and upward, and when the opening and closing member 200 is in the first position, the receiving surface is horizontal and downward, and the opening and closing member 200 is turned 180 degrees, thereby ensuring that the material can fall off the closing member 200.

[0032] In another optional embodiment, when the opening and closing member 200 is located at the first position and the second position, at least part of the structure of the support body 100 is located on different sides of the receiving surface, and when the opening and closing member 200 moves from the second position to the first position, the support body 100 pushes the material on the receiving surface.

[0033] That is, the orientation of the receiving surface of the opening and closing member 200 remains unchanged, such as the orientation of the receiving surface can be maintained vertically upward, or in other words, the receiving surface is always arranged horizontally upward. The opening and closing member 200 moves relative to the support body 100 by moving on the horizontal plane, so that part of the structure of the support body 100 sweeps over the receiving surface, and then pushes the material on the receiving surface. For example, a push plate can be extended from the support body 100, and the push plate is located above the receiving surface. It can be slidably connected with the receiving surface, or it can be separated by a small distance, and the push plate does not move, and the opening and closing member 200 moves, so that the push plate pushes the material. The connection between the opening and closing member 200 and the support body 100 can be a sliding connection, and the opening and closing member 200 can move linearly relative to the support body 100, or the connection between the opening and closing member 200 and the support body 100 can be a rotational connection, which is intended to move the receiving surface relative to the structure of the support body 100 located on the receiving surface.

[0034] In an optional embodiment, the number of opening and closing parts is one, and when the opening and closing part 200 is in the second position, the receiving surface of the opening and closing part 200 receives the material ejected from the nozzle; when the opening and closing part 200 moves / flips from the second position to the first position, the bearing surface and the horizontal plane have a certain angle, such as the bearing surface and the horizontal plane have an angle of 60 degrees or 90 degrees, so that the material on the bearing surface falls due to gravity.

[0035] In an optional embodiment, the number of opening and closing pieces 200 is at least two, one of the two adjacent opening and closing pieces 200 includes a first edge, and the other of the two adjacent opening and closing pieces 200 includes a second edge. When the opening and closing piece 200 is in the second position, the first edge is opposite to the second edge, and when the opening and closing piece 200 moves from the second position to the first position, the first edge and the second edge move away from each other.

[0036] In the manner of using multiple opening and closing members 200 to cooperate and undertake, on the one hand, when the nozzle needs to spray out the material, the vertical projection of the nozzle is located between the vertical projection of the first edge and the second edge, or the distance between the vertical projection of the nozzle and the vertical projection of the first edge and / or the second edge is less than the preset spacing, such as less than 0.5 mm, 1 mm, etc. When the material falls, it will fall on the adjacent opening and closing members 200 at the same time, or in other words, the material will cover a part of the first edge and a part of the second edge at the same time. As the opening and closing member 200 moves, the first edge and the second edge move away from each other, which will cause the material to be pulled, and then cause the material to separate from the opening and closing member 200. On the other hand, when the opening and closing member 200 is in the second position, the bearing surfaces of the multiple opening and closing members 200 can be regarded as a whole bearing surface. Under the premise of ensuring that the bearing surface area is large enough, the area of ​​a single opening and closing member 200 will be larger. The splicing of multiple opening and closing members 200 not only ensures that the bearing surface area is sufficient, but also makes the space occupied by a single opening and closing member 200 small, reduces the weight of a single opening and closing member 200, reduces the burden of movement, and the space occupied by a single opening and closing member 200 is small. For example, when the opening and closing member 200 moves from the second position to the first position and flips 180 degrees, it can be achieved to reduce the space below the material delivery device occupied when the opening and closing member 200 flips.

[0037] When the opening and closing member 200 is in the second position, the receiving surfaces of at least two opening and closing members 200 are located in the same plane, such as the receiving surfaces of the two opening and closing members 200 are both vertically facing upwards, so as to avoid an angle at the joint position of the receiving surfaces and avoid the material from being squeezed and adhered at the angle. In some other optional embodiments, when the opening and closing member 200 is in the second position, the receiving surfaces of at least two opening and closing members 200 are at a certain angle, such as an angle less than 180 degrees, or in other words, when the opening and closing member 200 is in the second position, the bearing surface is inclined upward, so that the material accumulation position can be more concentrated at the connection position of the two opening and closing members 200, the volume of the material is more similar, and the rotation angle of the opening and closing member 200 to move to the first position can be reduced. For example, when the opening and closing member 200 is in the first position, the bearing surface of the opening and closing member 200 is vertically downward, then the rotation angle of the opening and closing member 200 to move to the first position will be less than 180 degrees, and the opening and closing member 200 can move more efficiently between the first position and the second position.

[0038] In an optional embodiment, the first edge and the second edge are matched in profile, and when the opening and closing member 200 is in the second position, the first edge and the second edge have a gap separated by a preset distance, and the width of the gap should be smaller than the inner diameter of the nozzle, such as the width of the gap is less than 1.75 mm, so as to prevent the material ejected from the nozzle from directly passing through the gap. On the one hand, the gap makes way for the relative movement of the opening and closing members 200 to avoid the adjacent opening and closing members 200 from getting stuck, and on the other hand, it also reduces the contact area between the material and the opening and closing member 200, making it easier for the material to fall off. The first edge and the second edge can be a variety of shapes that are compatible with each other, such as the first edge includes at least one protruding area, and the second edge includes at least one recessed area that is compatible with the shape of the protruding area, which can increase the length of the edge, reduce the contact between the material and the opening and closing member 200, and further ensure that the material is separated from the closing member 200.

[0039] As pointed out in the above-mentioned embodiment, the action component can rely on its own driving member to drive the opening and closing member 200 to move, or the action component relies on the action of an external object to drive the opening and closing member 200 to move. In an optional embodiment, the action component includes a first action member 300 and a second action member 400. The first action member 300 is at least connected to the opening and closing member 200, and the first action member 300 is used to move under the action of an external force to drive the opening and closing member 200 to move from the first position to the second position. The second action member 400 is at least connected to one of the opening and closing member 200 and the first action member, and the second action member 400 is used to drive the opening and closing member 200 to move from the second position to the first position.

[0040] There are many ways to apply external force, such as setting an additional driving device, or applying external force to the first acting member 300 by moving the nozzle. For example, when the nozzle is to extrude the material, the nozzle moves toward the receiving surface, and then approaches the first acting member 300, and pushes the first acting member 300 to move by abutting, and then drives the opening and closing member 200 to move to the second position, and the opening and closing member 200 is horizontally facing upward to receive the material.

[0041] The second acting member 400 can be in various forms. For example, in an optional embodiment, the second acting member 400 can be used to apply external force. For example, the second acting member 400 can be a component that can be temporarily connected to the nozzle, such as a magnetic member or a magnetic suction member, which is magnetically connected to the nozzle, or a suction cup, which is adsorbed and connected to the nozzle. The second acting member 400 can be connected to the first acting member 300. During the movement of the nozzle toward the receiving surface, the nozzle pushes the first acting member 300 to move by abutting against the second acting member 400, and then the first acting member 300 drives the opening and closing member 200 to move. The first acting member 300 can be directly fixedly connected to the opening and closing member 200, and the movement mode of the opening and closing member 200 is the same as that of the first acting member 300. For example, the first acting member 300 drives the opening and closing member 200 to move in a straight line, and the material can be thrown through the partial structure of the support body 100 to sweep across the bearing surface. Alternatively, a transmission assembly 500 may be provided, and the first acting member 300 is connected to the opening and closing member 200 through the transmission assembly 500, so that the opening and closing member 200 can move differently from the first acting member 300, such as being rotatable. The optional implementation of the transmission assembly 500 will be illustrated below. After the nozzle ejects the material, the second acting member 400 will be temporarily connected to the nozzle, and then the opening and closing member 200 will be driven to move to the first position through the movement of the nozzle, so that the material falls off. When the opening and closing member 200 reaches the limit position, the second acting member 400 will be separated from the nozzle. Then, the next time the nozzle needs to extrude the material, the above operation is repeated. Alternatively, in another optional implementation, the second acting member 400 may be an energy storage member, such as the second acting member 400 is an elastic member, which may be a spring, such as a tension spring, a torsion spring, a compression spring, etc. In the process of the nozzle pushing the first acting member 300 to move so that the opening and closing member 200 moves to the second position, the elastic member will be squeezed by the first acting member 300, and the length is shortened to store energy. After the nozzle finishes spraying the material, the nozzle moves away from the first acting member 300, and then the elastic member restores its shape and releases energy, pushing the first acting member 300 to move, so that the opening and closing member 200 moves to the first position and remains in the first position until the next time the nozzle pushes the first acting member 300. The second acting member 400 uses an energy storage member to avoid the problem that the temporary connection between the second acting member 400 and the nozzle will be unstable and cause the opening and closing member 200 to be unable to reach the first position. The second acting member 400 can be connected to the first acting member 300, and indirectly drive the opening and closing member 200 to move by driving the movement of the first acting member 300, or it can also be directly connected to the opening and closing member 200, but in the embodiment in which the number of the opening and closing members 200 is multiple, the second acting member 400 is connected to the first acting member 300, and can drive multiple opening and closing members 200 to move at the same time to avoid structural redundancy.

[0042] In an optional embodiment, the first action member 300 is slidably connected to the support body 100, so that the movement of the first action member 300 is stable and not easy to shake. The first action member 300 and the support body 100 can be slidably connected in various ways. One of the support body 100 and the first action member 300 is provided with a sliding opening 101, and the other of the support body 100 and the first action member 300 is slidably connected to the sliding opening 101. Figure 6-7 As shown, a sliding opening 101 may be provided on the support body 100, and the sliding opening 101 may extend in the direction of movement of the nozzle or in the direction of the X axis, and the first acting member 300 is connected to the sliding opening 101. For another example, a sliding groove is provided on one of the support body 100 and the first acting member 300, and the other part of the support body 100 and the first acting member 300 is embedded in the sliding groove and can slide along the sliding groove. For example, a first sliding groove 104 may be provided on the support body 100, and a slider 302 is connected to the first acting member 300, and the slider 302 is slidably embedded in the first sliding groove 104. A second sliding groove 301 is provided on the first acting member 300, and a slide bar 105 is provided on the support body 100, and the slide bar 105 is slidably embedded in the second sliding groove 301, thereby further ensuring the stability of the movement of the first acting member 300. The above-mentioned implementation of the sliding opening 101 and the sliding groove may be selected in one or both manners, or may be provided at the same time.

[0043] In an optional embodiment, the support body 100 includes a accommodating cavity, a sliding opening 101 is opened on the support body 100, the sliding opening 101 is connected to the accommodating cavity, the first acting member 300 includes a moving part 310 and an acting part 320, the moving part 310 is located in the accommodating cavity, the acting part 320 is connected to the moving part 310, and the acting part 320 is slidably connected to the sliding opening 101.

[0044] The support body 100 may further include an upper support member and a lower support member, and the upper support member and the lower support member are detachably connected to enclose a receiving chamber. The upper support member can be used to connect a 3D printer, and the receiving chamber can be opened by removing the lower support member. The aforementioned sliding port 101 and the slide bar 105 can be arranged on the upper support member, the first slide groove 104 can be arranged on the lower support member, and the aforementioned slider 302 and the second slide groove 301 are arranged on opposite sides of the moving part 310, which then limit the first action member 300 in two directions and facilitate installation. The action part 320 is slidably connected to the sliding port 101, and is used to act with the nozzle outside the receiving chamber. The receiving chamber plays a role in protecting the moving part 310 and the transmission member, and also makes the material delivery device as a whole beautiful.

[0045] In an optional embodiment, a mounting groove is provided on the first action member 300, and the first end of the elastic member is embedded in the mounting groove. If the mounting groove is provided on the moving part 310, it can be provided on the slider 302 of the moving part 310. In some embodiments, Figure 7As shown, a mounting post 110 is provided on the support body 100, and the second end of the elastic member is sleeved on the mounting post 110. The mounting groove and the mounting post 110 cooperate to limit the elastic member. A single mounting groove or mounting post can also limit the installation of the elastic member to prevent the elastic member from falling off, and can guide the deformation direction of the elastic member to prevent the elastic member from bending to one side.

[0046] In an optional embodiment, the material delivery device further includes a transmission assembly 500 , the first operating member 300 is connected to the transmission assembly 500 , the transmission assembly 500 is connected to the opening and closing member 200 , and the first operating member 300 is used to drive the opening and closing member 200 to move through the transmission assembly 500 .

[0047] The transmission assembly 500 plays a role in transmitting power between the first acting member 300 and the opening and closing member 200, so that the opening and closing member 200 can have a different movement mode from the first acting member 300, such as changing the linear movement of the first acting member 300 into the flipping of the opening and closing member 200. In an optional embodiment, the transmission assembly 500 includes a first transmission member 510 and a second transmission member 520. The first transmission member 510 is connected to the first acting member 300, and the second transmission member 520 is connected to the opening and closing member 200. The first transmission member 510 and the second transmission member 520 are in transmission connection. The first transmission member 510 can be a rack, and the second transmission member 520 can be a gear. The opening and closing member 200 is rotationally connected to the support body 100. When the first acting member 300 moves linearly, the opening and closing member 200 is driven to rotate by the action of the rack and the gear. Alternatively, the first transmission member 510 and the second transmission member 520 can both be racks, and the opening and closing member 200 is slidably connected to the support body 100. When the first action member 300 moves linearly under the push of the nozzle, the opening and closing member 200 is driven to move linearly through the action of the rack.

[0048] In some embodiments, the transmission assembly 500 also realizes the movement of multiple opening and closing members 200 in different directions. For example, in an optional embodiment, the number of the opening and closing members 200 is two, and the transmission assembly 500 includes a first transmission member 510, a third transmission member 530, a fourth transmission member 540 and two second transmission members 520, the first transmission member 510 is connected to the first action member 300, the second transmission member 520 is connected to the opening and closing member 200, the third transmission member 530 and the fourth transmission member 540 are connected to the support body 100, the third transmission member 530 is in transmission connection with one of the two second transmission members 520, and the fourth transmission member 540 is in transmission connection with the third transmission member 530 and the other of the two second transmission members 520.

[0049] The third transmission member 530 and the fourth transmission member 540 may be gears, and the first transmission member 510 may be a rack. When the first operating member 300 moves linearly, the third transmission member 530 and the fourth transmission member 540 are driven to rotate in the opposite direction, and then they may act on the two second transmission members 520 respectively, and drive the opening and closing members 200 connected to the two second transmission members 520 to move in the opposite direction. If the second transmission member 520 is a gear, the opening and closing member 200 is rotatably connected to the support body 100, and when the first operating member 300 moves linearly, the two opening and closing members 200 are driven to rotate in the opposite direction through the action of the third transmission member 530 and the fourth transmission member 540. Alternatively, the second transmission members 520 may all be racks, and the opening and closing member 200 is slidably connected to the support body 100. When the first operating member 300 moves linearly, the two opening and closing members 200 are driven to move linearly in the opposite direction through the action of the third transmission member 530 and the fourth transmission member 540.

[0050] In the embodiment where the aforementioned support body 100 includes a accommodating cavity, the transmission assembly 500 and the second acting member 400 are both located in the accommodating cavity, thereby slowing down the oxidation corrosion of gears, etc., and preventing materials from dripping onto the transmission assembly 500 and the second acting member 400, resulting in transmission failure or reduced elasticity of the second acting member 400, etc.

[0051] The opening and closing member 200 can be directly suspended on one side of the support body 100, or, in an optional embodiment, a discharge port 102 is opened on the support body 100, and when the opening and closing member 200 is in the second position, the opening and closing member 200 covers the discharge port 102, and when the opening and closing member 200 is in the first position, the discharge port 102 is open.

[0052] The opening and closing member 200 is located on one side of the discharge outlet 102, or in other words, when in use, the opening and closing member 200 is located on the side of the discharge outlet 102 away from the nozzle. The side wall of the discharge outlet 102 may have a certain height in the direction close to or away from the closing member 200. In the embodiment where there are at least two opening and closing members 200, the projection of the connecting edges between the opening and closing members 200 in the vertical direction is at least partially located in the projection area of ​​the discharge outlet 102 in the vertical direction. The setting of the discharge outlet 102 can prevent the material from falling from the non-designated edge of the opening and closing member 200, and then ensure that the material will only fall off from the designated position when the opening and closing member 200 moves to the first position.

[0053] In an optional embodiment, at least one side wall of the discharge port 102 includes an inclined region 103 , and the inclined region 103 is inclined toward one side of the opening and closing member 200 in a direction close to the center of the discharge port 102 .

[0054] For example, the discharge port 102 may be provided with inclined areas 103 on opposite sides of the first action member 300 in the moving direction. The extended area of ​​the discharge port 102 may be expanded to receive the material extruded by the nozzle in a larger range, and the inclined area 103 may guide the material to move toward the receiving surface, so that even if the nozzle position is inaccurate or the material falls obliquely when extruding, the material can also fall accurately on the receiving surface.

[0055] In an optional embodiment, the material delivery device further includes: a connecting portion 600, the connecting portion 600 is connected to the support body 100, and the connecting portion 600 is used to connect to the 3D printer. The connecting portion 600 is provided with a plug interface 610, and the plug interface 610 is used to connect to the plug connector of the 3D printer. Alternatively, the connecting portion 600 includes a plug connector, and the plug connector is used to be plugged into the plug interface of the 3D printer.

[0056] The connection part 600 can be connected to the 3D printer by plugging, such as plugging with the X-axis component of the 3D printer, and can be connected with bolts at the same time, thereby ensuring easy installation and avoiding the problem of loosening and displacement caused by simple bolt connections.

[0057] On the other hand, the utility model also provides a 3D printer, including any of the above-mentioned material delivery devices, including the advantages of any of the above-mentioned material delivery devices, which will not be repeated here.

[0058] In an optional embodiment, the 3D printer further includes a nozzle and an X-axis assembly, the material delivery device is connected to the X-axis assembly, and the nozzle is used to push at least a portion of the action assembly to move, so as to drive the opening and closing member 200 to move to the second position.

[0059] Take the example that the action component includes a first action member 300 and a second action member 400, and there are two opening and closing members 200, the opening and closing members 200 are rotatably connected to the support body 100, and the opening and closing members 200 move the material by rotating. When it is necessary to extrude the material, the nozzle moves toward the material delivery device under the drive of the X-axis assembly until it abuts against the first action member 300, and the nozzle continues to move in the same direction, and then pushes the first action member 300 to move, and the first action member 300 drives the two opening and closing members 200 to rotate closer to each other through the transmission assembly 500. When the nozzle moves to correspond to the receiving surface, the opening and closing members 200 are connected to each other and the discharge port 102 is closed, as shown in FIG. Figure 5 As shown. Then the nozzle can extrude the material toward the receiving surface. After the extrusion of the material is completed, the nozzle moves away from the material delivery device, and then the second action member 400 acts on the first action member 300, causing the first action member 300 to move in the opposite direction. The first action member 300 drives the two opening and closing members 200 to rotate away from each other through the transmission assembly 500, and then opens the discharge port 102, as shown in FIG. Figure 1As shown, the material falls off. The material is received and dropped downward to avoid material accumulation, rolling or falling.

[0060] In an optional embodiment, the number of the opening and closing members 200 is at least two, one of the two adjacent opening and closing members 200 includes a first edge, and the other of the two adjacent opening and closing members 200 includes a second edge. When the opening and closing member 200 is in the second position, the first edge is opposite to the second edge, and when the opening and closing member 200 moves from the second position to the first position, the first edge and the second edge are away from each other. When the nozzle pushes the opening and closing member 200 to move to the second position, the distance between the vertical projection of the nozzle and the vertical projection of the first edge and / or the second edge is less than the preset spacing, so that the ejected material at least covers a portion of the first edge and a portion of the second edge.

[0061] For example, the vertical projection of the nozzle may be located between the vertical projections of the first edge and the second edge, and then the material is sprayed between the first edge or the second edge, so that the material can fall more evenly on the two adjacent opening and closing members 200. Alternatively, considering the mechanical error, the vertical projection of the nozzle may be located at a distance less than the preset spacing, such as less than 2 mm, such as 0.5 mm, 1 mm, 2 mm, etc., from the vertical projection of the first edge and / or the second edge, and the material can still be sprayed on the two adjacent opening and closing members 200 at the same time. The above arrangement enables the first edge and the second edge to move away from each other when the two adjacent opening and closing members 200 move, and can simultaneously apply pulling forces in different directions to the material, thereby pulling the material, so that the material is more easily detached from the opening and closing member 200.

[0062] The utility model also provides the following implementation modes:

[0063] Label 1. A material delivery device, comprising:

[0064] Support body 100;

[0065] An opening and closing assembly, the opening and closing assembly includes at least one opening and closing member 200, the opening and closing member 200 includes a receiving surface, the opening and closing member 200 is movably connected to the support body 100, and the position of the opening and closing member 200 includes a first position and a second position;

[0066] The acting component is at least connected to the opening and closing member 200, and the receiving surface is used to receive the material when the opening and closing member 200 is in the second position. The acting component is at least used to drive the opening and closing member 200 to move from the second position to the first position to make the material on the receiving surface fall off.

[0067] Label 2, according to the material delivery device of label 1, wherein:

[0068] The orientation of the receiving surface when the opening and closing member 200 is located at the first position is different from the orientation of the receiving surface when the opening and closing member 200 is located at the second position.

[0069] Label 3. A material delivery device according to label 2, wherein:

[0070] The orientation of the receiving surface when the opening and closing member 200 is in the first position is opposite to the orientation of the receiving surface when the opening and closing member 200 is in the second position;

[0071] Alternatively, the angle between the orientation of the receiving surface when the opening and closing member 200 is in the first position and the orientation of the receiving surface when the opening and closing member 200 is in the second position is a preset angle, which is not greater than 180 degrees and not less than 30 degrees.

[0072] Label 4. A material delivery device according to label 1, wherein:

[0073] When the opening and closing member 200 is located at the first position and the second position, at least part of the structure of the support body 100 is located on different sides of the receiving surface. When the opening and closing member 200 moves from the second position to the first position, the support body 100 pushes the material on the receiving surface.

[0074] Label 5. A material delivery device according to label 1, wherein:

[0075] The number of the opening and closing members 200 is at least two;

[0076] One of the two adjacent opening and closing members 200 includes a first edge, and the other of the two adjacent opening and closing members 200 includes a second edge. When the opening and closing member 200 is in the second position, the first edge is opposite to the second edge. When the opening and closing member 200 moves from the second position to the first position, the first edge and the second edge move away from each other.

[0077] Reference number 6. A material delivery device according to reference number 5, wherein:

[0078] When the opening and closing member 200 is in the second position, the receiving surfaces of at least two opening and closing members 200 are located in the same plane;

[0079] And / or, the first edge and the second edge have matching contours, and when the opening and closing member 200 is in the second position, there is a gap between the first edge and the second edge at a preset distance.

[0080] Label 7. A material delivery device according to label 1, wherein:

[0081] The action assembly includes a first action member 300 and a second action member 400;

[0082] The first action member 300 is at least connected to the opening and closing member 200, and the first action member 300 is used to move under the action of an external force to drive the opening and closing member 200 to move from the first position to the second position;

[0083] The second operating member 400 is connected to at least one of the opening and closing member 200 and the first operating member, and the second operating member 400 is used to drive the opening and closing member 200 to move from the second position to the first position.

[0084] Reference numeral 8. A material delivery device according to reference numeral 7, wherein:

[0085] The first action member 300 is slidably connected to the support body 100;

[0086] A sliding opening 101 is provided on one of the supporting body 100 and the first acting member 300, and the other one of the supporting body 100 and the first acting member 300 is slidably connected to the sliding opening 101;

[0087] And / or, a sliding groove is provided on one of the support body 100 and the first action member 300, and a portion of the other of the support body 100 and the first action member 300 is embedded in the sliding groove and can slide along the sliding groove;

[0088] And / or, the support body 100 includes a accommodating cavity, a sliding opening 101 is opened on the support body 100, the sliding opening 101 is connected to the accommodating cavity, the first acting member 300 includes a moving part 310 and an acting part 320, the moving part 310 is located in the accommodating cavity, the acting part 320 is connected to the moving part 310, and the acting part 320 is slidably connected to the sliding opening 101.

[0089] Reference number 9. The material delivery device according to reference number 7, wherein the material delivery device further comprises:

[0090] The transmission assembly 500 , the first operating member 300 is connected to the transmission assembly 500 , the transmission assembly 500 is connected to the opening and closing member 200 , and the first operating member 300 is used to drive the opening and closing member 200 to move through the transmission assembly 500 .

[0091] Reference number 10. A material delivery device according to reference number 9, wherein:

[0092] The transmission assembly 500 includes a first transmission member 510 and a second transmission member 520;

[0093] The first transmission member 510 is connected to the first acting member 300 , and the second transmission member 520 is connected to the opening and closing member 200 . The first transmission member 510 and the second transmission member 520 are in transmission connection.

[0094] Reference number 11. A material delivery device according to reference number 9, wherein:

[0095] There are two opening and closing parts 200, and the transmission assembly 500 includes a first transmission part 510, a third transmission part 530, a fourth transmission part 540 and two second transmission parts 520. The first transmission part 510 is connected to the first acting part 300, the second transmission part 520 is connected to the opening and closing part 200, the third transmission part 530 and the fourth transmission part 540 are rotatably connected to the support body 100, the third transmission part 530 is transmission-connected to one of the two second transmission parts 520, and the fourth transmission part 540 is transmission-connected to the third transmission part 530 and the other one of the two second transmission parts 520.

[0096] Reference number 12. A material delivery device according to reference number 7, wherein:

[0097] The second acting member 400 is an elastic member;

[0098] The first action member 300 is provided with a mounting groove, and the first end of the elastic member is embedded in the mounting groove;

[0099] And / or, a mounting post 110 is disposed on the support body 100 , and the second end of the elastic member is sleeved on the mounting post 110 .

[0100] Reference number 13. A material delivery device according to reference number 1, wherein:

[0101] The support body 100 is provided with a discharge port 102 . When the opening and closing member 200 is in the second position, the opening and closing member 200 covers the discharge port 102 . When the opening and closing member 200 is in the first position, the discharge port 102 is open.

[0102] Reference number 14. A material delivery device according to reference number 13, wherein:

[0103] At least one side wall of the discharge port 102 includes an inclined region 103 , and the inclined region 103 is inclined toward the opening and closing member 200 in a direction close to the center of the discharge port 102 .

[0104] Reference number 15. The material delivery device according to reference number 1, wherein the material delivery device further comprises:

[0105] A connecting portion 600, the connecting portion 600 is connected to the supporting body 100, and the connecting portion 600 is used to connect to a 3D printer;

[0106] The connecting portion 600 is provided with a plug interface 610, and the plug interface 610 is used to connect to the plug connector of the 3D printer;

[0107] Alternatively, the connection portion 600 includes a plug connector, which is used to be plugged into a plug interface of a 3D printer.

[0108] Label 16. A 3D printer, comprising a material delivery device as described in any one of the above labels 1-15.

[0109] Reference number 17. A 3D printer according to reference number 16, wherein the 3D printer further comprises:

[0110] The nozzle and the X-axis assembly, the material delivery device is connected to the X-axis assembly, and the nozzle is used to push at least a part of the action assembly to move, so as to drive the opening and closing member 200 to move to the second position.

[0111] Reference number 18. A 3D printer according to reference number 17, wherein:

[0112] There are at least two opening and closing members 200, one of the two adjacent opening and closing members 200 includes a first edge, and the other of the two adjacent opening and closing members 200 includes a second edge. When the opening and closing member 200 is in the second position, the first edge is opposite to the second edge, and when the opening and closing member 200 moves from the second position to the first position, the first edge and the second edge are away from each other.

[0113] When the nozzle pushes the opening and closing member 200 to move to the second position, the vertical projection of the nozzle is less than the preset spacing from the vertical projection of the first edge and / or the second edge, so that the material sprayed by the nozzle covers at least a partial area of ​​the first edge and a partial area of ​​the second edge.

[0114] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A material delivery device, characterized in that: include: Support body; An opening and closing assembly, the opening and closing assembly comprising at least one opening and closing member, the opening and closing member comprising a receiving surface, the opening and closing member being movably connected to the supporting body, and the position of the opening and closing member comprising a first position and a second position; An acting component, wherein the acting component is at least connected to the opening and closing member, the receiving surface is used to receive the material when the opening and closing member is in the second position, and the acting component is at least used to drive the opening and closing member to move from the second position to the first position so that the material on the receiving surface falls off.

2. The material delivery device according to claim 1, characterized in that: The orientation of the receiving surface when the opening and closing member is located at the first position is different from the orientation of the receiving surface when the opening and closing member is located at the second position.

3. The material delivery device according to claim 2, characterized in that: The orientation of the receiving surface when the opening and closing member is located at the first position is opposite to the orientation of the receiving surface when the opening and closing member is located at the second position; Alternatively, the angle between the orientation of the receiving surface when the opening and closing member is in the first position and the orientation of the receiving surface when the opening and closing member is in the second position is a preset angle, and the preset angle is not greater than 180 degrees and not less than 30 degrees.

4. The material delivery device according to claim 1, characterized in that: When the opening and closing member is located at the first position and the second position, at least part of the structure of the support body is located on different sides of the receiving surface, and when the opening and closing member moves from the second position to the first position, the support body pushes the material on the receiving surface.

5. The material delivery device according to claim 1, characterized in that: The number of the opening and closing members is at least two; One of the two adjacent opening and closing members includes a first edge, and the other of the two adjacent opening and closing members includes a second edge. When the opening and closing members are in the second position, the first edge is opposite to the second edge. When the opening and closing members move from the second position to the first position, the first edge and the second edge move away from each other.

6. The material delivery device according to claim 5, characterized in that: When the opening and closing member is in the second position, the receiving surfaces of at least two of the opening and closing members are located in the same plane; And / or, the first edge and the second edge have matching contours, and when the opening and closing member is in the second position, there is a gap between the first edge and the second edge at a preset distance.

7. The material delivery device according to claim 1, characterized in that: The action component includes a first action member and a second action member; The first action member is at least connected to the opening and closing member, and the first action member is used to move under the action of an external force to drive the opening and closing member to move from the first position to the second position; The second actuating member is connected to at least one of the opening and closing member and the first actuating member, and the second actuating member is used to drive the opening and closing member to move from the second position to the first position.

8. The material delivery device according to claim 7, characterized in that: The first action member is slidably connected to the support body; A sliding opening is provided on one of the support body and the first action member, and the other of the support body and the first action member is slidably connected to the sliding opening; And / or, a sliding groove is provided on one of the support body and the first action member, and a portion of the other of the support body and the first action member is embedded in the sliding groove and can slide along the sliding groove; And / or, the support body includes a accommodating cavity, a sliding opening is opened on the support body, the sliding opening is connected to the accommodating cavity, the first acting member includes a moving part and an acting part, the moving part is located in the accommodating cavity, the acting part is connected to the moving part, and the acting part is slidably connected to the sliding opening.

9. The material delivery device according to claim 7, characterized in that: The material delivery device also includes: Transmission assembly, the first acting member is connected to the transmission assembly, the transmission assembly is connected to the opening and closing member, and the first acting member is used to drive the opening and closing member to move through the transmission assembly.

10. The material delivery device according to claim 9, characterized in that: The transmission assembly includes a first transmission member and a second transmission member; The first transmission member is connected to the first acting member, the second transmission member is connected to the opening and closing member, and the first transmission member and the second transmission member are in transmission connection.

11. The material delivery device according to claim 9, characterized in that: The number of the opening and closing parts is two, and the transmission assembly includes a first transmission part, a third transmission part, a fourth transmission part and two second transmission parts. The first transmission part is connected to the first action part, the second transmission part is connected to the opening and closing part, the third transmission part and the fourth transmission part are rotatably connected to the support body, the third transmission part is transmission-connected to one of the two second transmission parts, and the fourth transmission part is transmission-connected to the third transmission part and the other one of the two second transmission parts.

12. The material delivery device according to claim 7, characterized in that: The second acting member is an elastic member; The first action member is provided with a mounting groove, and the first end of the elastic member is embedded in the mounting groove; And / or, a mounting column is provided on the support body, and the second end of the elastic member is sleeved on the mounting column.

13. The material delivery device according to claim 1, characterized in that: The support body is provided with a discharge outlet. When the opening and closing member is in the second position, the opening and closing member covers the discharge outlet. When the opening and closing member is in the first position, the discharge outlet is open.

14. The material delivery device according to claim 13, characterized in that: At least one side wall of the discharge port includes an inclined region, and the inclined region is inclined toward one side of the opening and closing member in a direction close to the center of the discharge port.

15. The material delivery device according to claim 1, characterized in that: The material delivery device also includes: A connecting portion, the connecting portion being connected to the supporting body, and the connecting portion being used to connect to a 3D printer; The connecting portion is provided with a plug interface, and the plug interface is used to be connected to the plug connector of the 3D printer; Alternatively, the connecting portion includes a plug connector, and the plug connector is used to be plugged into a plug interface of the 3D printer.

16. A 3D printer, characterized in that: It comprises a material delivery device as described in any one of claims 1 to 15 above.

17. The 3D printer according to claim 16, characterized in that: The 3D printer also includes: A nozzle and an X-axis assembly, wherein the material delivery device is connected to the X-axis assembly, and the nozzle is used to push at least a partial area of ​​the action assembly to move, so as to drive the opening and closing member to move to the second position.

18. The 3D printer according to claim 17, characterized in that: The number of the opening and closing members is at least two, one of the two adjacent opening and closing members includes a first edge, and the other of the two adjacent opening and closing members includes a second edge. When the opening and closing member is in the second position, the first edge is opposite to the second edge, and when the opening and closing member moves from the second position to the first position, the first edge and the second edge are away from each other. When the nozzle pushes the opening and closing member to move to the second position, the vertical projection of the nozzle is less than a preset distance from the vertical projection of the first edge and / or the second edge, so that the material sprayed by the nozzle covers at least a partial area of ​​the first edge and a partial area of ​​the second edge.

Images