Material throwing device and three-dimensional printer

Abstract

The utility model discloses a material throwing device and a three-dimensional printer, relates to the technical field of three-dimensional printing equipment, and mainly aims to avoid scalding accidents caused by waste materials extruded by a printing head so as to improve the operation safety. According to the main technical scheme, the material throwing device is applied to the three-dimensional printer, the three-dimensional printer comprises a printing head and a stock bin, and the stock bin comprises a material throwing channel; the material throwing part is rotatably arranged at the material throwing channel; the triggering piece is connected with the throwing piece, and the triggering piece is used for driving the throwing piece to rotate under the condition that the triggering piece is subjected to external force; at least one part of the triggering piece is a flexible piece, and at least one part of the triggering piece is used for deforming when being subjected to external force.

Description

Technical Field

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

[0002] In recent years, 3D printers have developed rapidly. A 3D printer is a printing device that uses a digital model file as a basis, uses powdery metals, plastics or other bondable materials as printing materials, and forms objects by layer-by-layer printing.

[0003] Currently, when a 3D printer changes different types or colors of printing materials, it is usually necessary to first extrude the waste material in the print head and then perform printing to avoid situations such as material mixing or color mixing during printing. However, the temperature of the waste material extruded from the print head is usually relatively high, which is likely to cause scalding accidents and the operation safety is relatively low. Summary of the Utility Model

[0004] In view of this, embodiments of the present utility model provide a material throwing device and a 3D printer, and the main purpose is to avoid scalding accidents caused by the waste material extruded from the print head, so as to improve the operation safety.

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

[0006] On the one hand, an embodiment of the present utility model provides a material throwing device applied to a 3D printer, and the 3D printer includes a print head, and the material throwing device includes:

[0007] A material bin, the material bin includes a material throwing channel;

[0008] A material throwing member, the material throwing member is rotatably arranged at the material throwing channel;

[0009] A triggering member, the triggering member is connected to the material throwing member, and the triggering member is used for driving the material throwing member to rotate when being subjected to an external force;

[0010] At least a part of the triggering member is a flexible member, and at least a part of the triggering member is used for deforming when being subjected to an external force.

[0011] Further, the material throwing channel includes a material inlet, and the material throwing member is arranged at the material inlet;

[0012] The triggering member is used for driving the material throwing member to rotate when being subjected to an external force, including that the triggering member is used for driving the material throwing member to rotate relative to the material bin to block at least part of the material inlet when being subjected to a first acting force of the print head in a first direction;

[0013] At least a part of the trigger member is configured to deform when subjected to an external force, including at least a part of the trigger member being configured to deform when subjected to a second acting force of the print head in the second direction;

[0014] The first direction is different from the second direction.

[0015] Further, the trigger member is a flexible member;

[0016] When the trigger member is subjected to the first acting force, the amount of deformation of the trigger member is the first amount of deformation;

[0017] When the trigger member is subjected to the second acting force, the amount of deformation of the trigger member is the second amount of deformation;

[0018] The first amount of deformation is less than the second amount of deformation.

[0019] Further, the part of the trigger member for receiving the first acting force or the second acting force is the force-receiving part;

[0020] The size of the cross-section of at least the force-receiving part of the trigger member in the first direction is greater than its size in the second direction.

[0021] Further, the first direction is perpendicular to the second direction;

[0022] The cross-section of the force-receiving part is a rectangular surface, the length direction of the rectangular surface is consistent with the first direction, and the width direction of the rectangular surface is consistent with the second direction.

[0023] Further, the trigger member includes a first end away from the material throwing member, and the first end bends and extends toward a third direction, and the third direction is opposite to the first direction;

[0024] The first end is configured to receive the first acting force so that the material throwing member blocks the material inlet.

[0025] Further, the material throwing member is provided with a mounting hole;

[0026] The trigger member includes a second end close to the material throwing member, and the second end is inserted into the mounting hole.

[0027] Further, the mounting hole includes an adjacent first hole section and a second hole section, and the size of the first hole section is greater than the size of the second hole section;

[0028] The outer surface of the second end is provided with a mounting groove, and the mounting groove extends along the circumferential direction of the trigger member;

[0029] The second end is inserted into the first hole section and passes through the second hole section; the second hole section is snap-fitted with the mounting groove.

[0030] Further, the second end includes a first section and a second section connected to each other. The size of the second section is larger than that of the first section, and a stepped surface is formed at the connection between the first section and the second section.

[0031] The first section is inserted into the first hole section and passes through the second hole section.

[0032] The stepped surface abuts against the end edge of the first hole section.

[0033] Further, the throwing member is rotatably connected to the silo, and the plane where the rotation direction of the throwing member is located is parallel to the first direction.

[0034] Further, the throwing member is configured to rotate relative to the silo to a first position along a fourth direction under the drive of the triggering member, and the throwing member contacts the inner wall of the silo or the distance between the throwing member and the inner wall of the silo is less than a set distance, so that the throwing member blocks at least a part of the feeding port.

[0035] The throwing member is further configured to rotate relative to the silo to a second position along a fifth direction under the action of gravity, so that the area of the feeding port blocked by the throwing member is smaller than the area of the feeding port blocked by the throwing member at the first position.

[0036] The fifth direction is opposite to the fourth direction, and the plane where the fifth direction and the fourth direction are located is the plane where the rotation direction of the throwing member is located.

[0037] Further, the throwing member includes a rotating rod and a throwing plate. The rotating rod is rotatably connected to the silo. One end of the rotating rod is connected to the triggering member, and the other end of the rotating rod is connected to the throwing plate. The throwing plate is located inside the silo, and at least a part of the triggering member is located outside the silo.

[0038] The rotating rod is configured to rotate relative to the silo along the fourth direction under the drive of the triggering member, so that the throwing plate blocks at least a part of the feeding port.

[0039] The rotating rod is further configured to rotate relative to the silo along the fifth direction under the action of gravity, so that the throwing plate is inclined downward relative to the silo.

[0040] The fifth direction is opposite to the fourth direction.

[0041] Further, the silo further includes a discharge port communicating with the feeding port.

[0042] In the direction of gravity, the feeding port is located above the discharging port; the bottom wall of the bin is inclined downward toward the discharging port;

[0043] After the rotating rod rotates along the fifth direction, the end of the throwing plate faces the bottom wall of the bin.

[0044] On the other hand, an embodiment of the present invention also provides a three-dimensional printer, including the aforementioned throwing device.

[0045] By means of the above technical solutions, the present invention has at least the following beneficial effects:

[0046] In the technical solution provided by the embodiment of the present invention, the throwing member is rotatably arranged at the throwing channel of the bin, and the triggering member is connected to the throwing member. When the triggering member is subjected to an external force, for example, when the print head moves and pushes the triggering member, the triggering member can drive the throwing member to rotate relative to the bin, so that the waste material extruded by the print head can fall on the throwing member. During this process, the waste material can be cooled; when the print head leaves the triggering member, the external force received by the triggering member disappears, and the throwing member returns to its original position under its own gravity, so that the throwing member can throw the waste material into the bin, thereby discharging the waste material. Since the waste material can be cooled when it falls on the throwing member, the temperature of the waste material extruded by the print head is reduced, the risk of scalding is avoided, and the operation safety is improved.

[0047] Moreover, by setting at least a part of the triggering member as a flexible member, when an abnormal situation such as the print head moving in other directions occurs, the print head can hit the flexible part of the triggering member, causing the flexible part to deform and buffer the impact force on the print head, thereby avoiding damage to the throwing device. Description of the Drawings

[0048] Figure 1 It is a schematic structural view of the throwing member in a material blocking state in a throwing device provided by an embodiment of the present invention;

[0049] Figure 2 It is a schematic cross-sectional view of the throwing member in a material blocking state in a throwing device provided by an embodiment of the present invention;

[0050] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0051] Figure 4 It is a schematic structural view of the triggering member in a throwing device provided by an embodiment of the present invention;

[0052] Figure 5 It is a schematic cross-sectional view of the triggering member in a throwing device provided by an embodiment of the present invention;

[0053] Figure 6 Schematic structural diagram of the rotating rod of the throwing member in a throwing device provided by an embodiment of the present utility model;

[0054] Figure 7 Schematic structural diagram of a throwing member of a throwing device provided by an embodiment of the present utility model in a natural state;

[0055] Figure 8 Cross-sectional schematic diagram of a throwing member of a throwing device provided by an embodiment of the present utility model in a natural state.

[0056] Explanation of reference numerals:

[0057] 1 - Silo; 11 - Feed inlet; 12 - Bottom wall; 2 - Throwing member; 21 - Mounting hole; 211 - First hole section; 212 - Second hole section; 22 - Rotating rod; 23 - Throwing plate; 3 - Trigger member; 31 - First end; 32 - Second end; 321 - Mounting groove; 322 - First section; 323 - Second section; 324 - Step surface. Detailed implementation manners

[0058] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present utility model.

[0059] As Figure 1 、 Figure 2 and Figures 7 to 8 shown, an embodiment of the present utility model provides a throwing device, which is applied to a 3D printer. The 3D printer includes a print head. The throwing device includes a silo 1, and the silo 1 includes a throwing channel; a throwing member 2, which is rotatably arranged at the throwing channel; a trigger member 3, which is connected to the throwing member 2. The trigger member 3 is used to drive the throwing member 2 to rotate when being subjected to an external force, such as the driving force of the print head; at least a part of the trigger member 3 is a flexible member, and at least a part of the trigger member 3 is used to deform when being subjected to an external force.

[0060] The material throwing device provided by the embodiment of the present utility model has a material throwing member 2 rotatably arranged at the material throwing channel of the material bin 1. A triggering member 3 is connected to the material throwing member 2. When the triggering member is subjected to an external force, for example, when the print head moves and pushes the triggering member 3, the triggering member 3 can drive the material throwing member 2 to rotate relative to the material bin 1, so that the waste material extruded by the print head can fall on the material throwing member 2. During this process, the waste material can be cooled. When the print head leaves the triggering member 3, the external force applied to the triggering member 3 disappears, and the material throwing member 2 returns to its original position under its own gravity, so that the material throwing member 2 can throw the waste material into the material bin 1, thereby discharging the waste material. Since the waste material can be cooled when it falls on the material throwing member 2, the temperature of the waste material extruded by the print head is reduced, scalding accidents are avoided, and the operation safety is improved.

[0061] Moreover, by setting at least a part of the triggering member 3 as a flexible member, when abnormal situations such as the print head moving in other directions occur, the print head can impact the triggering member 3, causing the flexible part of the triggering member 3 to deform and buffer the impact force of the print head, thereby avoiding damage to the material throwing device.

[0062] In some embodiments, the material throwing channel includes a material inlet 11, and the material throwing member 2 is arranged at the material inlet 11. The triggering member 3 is used to drive the material throwing member 2 to rotate when subjected to an external force, and may include that the triggering member 3 is used to drive the material throwing member 2 to move relative to the material bin 1 to block at least part of the material inlet 11 when subjected to a first acting force of the print head in a first direction. At least a part of the triggering member 3 being used to deform when subjected to an external force may include: at least a part of the triggering member 3 being used to deform when subjected to a second acting force of the print head in a second direction; the first direction is different from the second direction.

[0063] When the print head moves in the first direction and pushes the triggering member 3, the triggering member 3 can drive the material throwing member 2 to rotate relative to the material bin 1, so that the material throwing member 2 blocks the material inlet 11, and in this way, the waste material extruded by the print head can smoothly fall on the material throwing member 2. During this process, the waste material can be cooled.

[0064] When an abnormal situation occurs where the print head moves in the second direction, the print head can impact the triggering member 3, causing the flexible part of the triggering member 3 to deform and buffer the impact force of the print head, thereby avoiding damage to the material throwing device.

[0065] Among them, at least a part of the triggering member 3 is set as a flexible member, that is, the whole triggering member can be a flexible member, or a certain part of the triggering member without limiting the position, such as the middle part or the lower middle part, etc., can be a flexible member as long as the function of the triggering member 3 can be realized.

[0066] In some embodiments, the trigger member 3 can be a flexible member, that is, the whole of it can be a flexible member; when the trigger member 3 is subjected to a first acting force, the deformation amount of the trigger member 3 is the first deformation amount; when the trigger member 3 is subjected to a second acting force, the deformation amount of the trigger member 3 is the second deformation amount; the first deformation amount is less than the second deformation amount.

[0067] Among them, the whole of the trigger member 3 is made of a flexible member, and moreover, the first deformation amount generated when the trigger member 3 is subjected to the first acting force is less than the second deformation amount generated when the trigger member 3 is subjected to the second acting force. That is to say, the trigger member 3 is not easily deformed or not deformed when subjected to the first acting force, and the trigger member 3 is easily deformed when subjected to the second acting force. Since the trigger member 3 is not easily deformed when subjected to the first acting force, the trigger member 3 can drive the throwing member 2 to rotate relative to the material bin 1; and the trigger member 3 is easily deformed when subjected to the second acting force, which is beneficial to improving the buffering effect of the trigger member 3 on the second acting force, thereby better avoiding damage to the throwing device.

[0068] The whole of the trigger member 3 is made of a flexible member, which not only avoids damage to the throwing device, but also ensures that the trigger member 3 can drive the throwing member 2 to rotate when subjected to the first acting force. The structure is simple, the cost is low, and the processing and manufacturing are convenient. Specifically, the trigger member 3 can be made of soft rubber material.

[0069] In some embodiments, the part of the trigger member 3 for receiving the first acting force or the second acting force is the stressed part; the size of the cross-section of at least the stressed part of the trigger member 3 in the first direction is greater than its size in the second direction.

[0070] Since the size of the cross-section of the stressed part in the first direction is greater than its size in the second direction, the thickness of the stressed part in the first direction is larger and the thickness in the second direction is smaller. Therefore, the trigger member 3 is not easily deformed in the first direction, and the trigger member 3 can drive the throwing member 2 to rotate relative to the material bin 1; while the trigger member 3 is easily deformed in the second direction, which is beneficial to improving the buffering effect of the trigger member 3 on the second acting force and can better avoid damage to the throwing device.

[0071] In some embodiments, the first direction can be perpendicular to the second direction; the cross-section of the stressed part of the trigger member 3 can be a rectangular surface, the length direction of the rectangular surface is consistent with the first direction, and the width direction of the rectangular surface is consistent with the second direction.

[0072] That is to say, at least the stressed part of the trigger member 3 can be in the shape of a cuboid, its length direction is consistent with the first direction, so that the stressed part is not easily deformed in the first direction, and the width direction is consistent with the second direction, so that the stressed part is easily deformed in the second direction.

[0073] In some embodiments, see Figure 4 andFigure 5 The trigger member 3 may include a first end 31 away from the ejection member 2, the first end 31 is bent and extended toward a third direction, and the third direction is opposite to the first direction; the first end 31 is used to receive a first force so that the ejection member 2 blocks the feed port 11.

[0074] In the process of the print head pushing the first end 31 along the first direction, since the first end 31 bends and extends along the third direction, and the third direction is opposite to the first direction, the print head can always maintain contact with the first end 31 without being separated from the first end 31 until the ejection piece 2 blocks the feed port 11, thereby avoiding the situation where the print head is separated from the trigger piece 3 and the waste material cannot be squeezed out of the ejection piece 2, thereby ensuring the smooth material reception of the ejection piece 2.

[0075] In some embodiments, see Figure 2 , Figure 3 and Figure 6 The throwing member 2 may be provided with a mounting hole 21 ; the trigger member 3 may include a second end 32 close to the throwing member 2 , and the second end 32 is inserted into the mounting hole 21 .

[0076] When installing the throwing piece 2 and the trigger piece 3, the second end 32 of the trigger piece 3 can be directly inserted into the mounting hole 21 of the throwing piece 2 to complete the assembly of the two. No other fasteners are needed during the process, and the operation is convenient and quick. Correspondingly, when disassembling the throwing piece 2 and the trigger piece 3, the second end 32 of the trigger piece 3 is pulled out of the mounting hole 21 of the throwing piece 2 to complete the disassembly of the two. The operation is convenient and quick.

[0077] In some embodiments, see Figure 2 , Figure 3 and Figure 6 The mounting hole 21 may include adjacent first hole section 211 and second hole section 212, the size of the first hole section 211 is larger than the size of the second hole section 212; the outer surface of the second end 32 is provided with a mounting groove 321, and the mounting groove 321 extends along the circumferential direction of the trigger member 3; the second end 32 is inserted into the first hole section 211 and passes through the second hole section 212; the second hole section 212 is snap-connected with the mounting groove 321.

[0078] In the above embodiment, the mounting groove 321 of the second end 32 of the trigger member 3 is snap-fitted with the second hole section 212 of the mounting hole 21 , which can improve the assembly strength between the trigger member 3 and the ejector member 2 , thereby improving the assembly stability between the two.

[0079] Among them, when installing the throwing member 2 and the triggering member 3, the second end 32 of the triggering member 3 can be first inserted into the first hole section 211 of the mounting hole 21, and then a force is continuously applied to the triggering member 3 so that the head of the second end 32 deforms and passes through the second hole section 212. At the same time, the mounting groove 321 on the second end 32 engages with the second hole section 212, thereby completing the assembly of the throwing member 2 and the triggering member 3. Of course, in order for the head of the second end 32 to smoothly pass through the second hole section 212, an inclined guiding surface can be provided at least at a position on the head of the second end 32 close to the mounting groove 321. When disassembling and installing the throwing member 2 and the triggering member 3, a force can be applied to the triggering member 3 to pull it out of the mounting hole 21 outward, so that the position of the mounting groove 321 of the second end 32 deforms and disengages from the second hole section 212, and finally the second end 32 is disengaged from the mounting hole 21, completing the disassembly of the throwing member 2 and the triggering member 3.

[0080] In some embodiments, referring to Figure 2 、 Figure 3 、Figure and Figure 6 , the second end 32 may include a first section 322 and a second section 323 connected to each other. The size of the second section 323 is larger than that of the first section 322, and a step surface 324 is formed at the connection between the first section 322 and the second section 323. The first section 322 is inserted into the first hole section 211 and passes through the second hole section 212. The mounting groove 321 is formed in the first section 322. The step surface 324 abuts against the end edge of the first hole section 211.

[0081] When installing the throwing member 2 and the triggering member 3, the second end 32 of the triggering member 3 can be first inserted into the first hole section 211 of the mounting hole 21, and then the triggering member 3 is continuously pushed until the step surface 324 abuts against the end edge of the first hole section 211, and then the pushing of the triggering member 3 is stopped. At this time, the head of the second end 32 can just pass through the second hole section 212, so that the mounting groove 321 on the second end 32 engages with the second hole section 212, thereby completing the assembly of the throwing member 2 and the triggering member 3, and the operation is more convenient.

[0082] In some embodiments, the throwing member 2 is rotatably connected to the magazine 1, and the plane in which the rotation direction of the throwing member 2 is located is parallel to the first direction.

[0083] Since the plane in which the rotation direction of the throwing member 2 is located is parallel to the first direction, the throwing member 2 cannot rotate in the second direction. When the print head moves in the second direction and impacts the triggering member 3, the flexible part of the triggering member 3 can deform, thereby buffering the impact force of the print head and further avoiding damage to the throwing device.

[0084] In some embodiments, the material throwing member 2 is configured to rotate relative to the material bin 1 to the first position along the fourth direction under the drive of the triggering member 3, and the material throwing member 2 contacts the inner wall of the material bin 1, or the distance between the material throwing member 2 and the inner wall of the material bin 1 is less than a set distance, so that the material throwing member 2 blocks at least a part of the material inlet 11; the material throwing member 2 is further configured to rotate relative to the material bin 1 to the second position along the fifth direction under the action of gravity, so that the area of the material inlet 11 blocked by the material throwing member 2 is smaller than the area of the material inlet 11 blocked by the material throwing member 2 at the first position; the fifth direction is opposite to the fourth direction, and the plane where the fifth direction and the fourth direction are located is the plane where the rotation direction of the material throwing member 2 is located.

[0085] Wherein, when the triggering member 3 receives a first acting force from the print head along the first direction, since the triggering member 3 is not easily deformed in the first direction, it is beneficial for the triggering member 3 to receive the first acting force applied by the print head and drive the material throwing member 2 to rotate relative to the material bin 1 to the first position along the fourth direction.

[0086] At the first position, the material throwing member 2 blocks at least a part of the material inlet 11, so that the waste material extruded by the print head can fall on the material throwing member 2. Moreover, at the first position, the material throwing member 2 can contact the inner wall of the material bin 1, so that the material throwing member 2 can reliably receive the waste material; or, the distance between the material throwing member 2 and the inner wall of the material bin 1 can be less than a set distance, and the preset distance can be the maximum distance that the waste material cannot pass through, which can also ensure that the material throwing member 2 receives the waste material. The material throwing member 2 receives the waste material, and the waste material mass can be integrated into a spherical shape and change from a molten state to a solid state.

[0087] When the print head leaves the triggering member 3, the first acting force disappears, and the material throwing member 2 can rotate to the second position along the fifth direction opposite to the fourth direction under its own gravity. The second position and the first position can be the same position, or not the same position, as long as it can be realized that when the material throwing member 2 is in the second position, the waste material on the material throwing member 2 can be thrown into the material bin 1 under the action of gravity.

[0088] At the second position, the area of the material inlet 11 blocked by the material throwing member 2 is smaller than the area of the material inlet 11 blocked by the material throwing member 2 at the first position, so that the waste material on the material throwing member 2 can be thrown into the material bin 1.

[0089] In some embodiments, see Figure 2 and Figure 8, the material throwing member 2 may include a rotating rod 22 and a material throwing plate 23. The rotating rod 22 is rotatably connected to the material bin 1. One end of the rotating rod 22 is connected to the triggering member 3, and the other end of the rotating rod 22 is connected to the material throwing plate 23. The material throwing plate 23 is located inside the material bin 1, and at least part of the triggering member 3 is located outside the material bin 1. The rotating rod 22 is configured to rotate relative to the material bin 1 in a fourth direction under the drive of the triggering member 3, so that the material throwing plate 23 shields at least part of the feeding port 11. The rotating rod 22 is further configured to rotate relative to the material bin 1 in a fifth direction under the action of gravity, so that the material throwing plate 23 is inclined downward relative to the material bin 1. The aforementioned mounting hole 21 is formed on the rotating rod 22.

[0090] When the print head pushes the triggering member 3 in the first direction, the rotating rod 22 can rotate relative to the material bin 1 in a fourth direction under the drive of the triggering member 3, so that the material throwing plate 23 shields at least part of the feeding port 11. The print head can extrude the waste material onto the material throwing plate 23, and the waste material can be cooled down. When the print head leaves the triggering member 3, the rotating rod 22 can rotate in a fifth reverse direction opposite to the fourth direction under the action of gravity, so that the material throwing plate 23 is inclined relative to the material bin 1, and the waste material can fall from the material throwing plate 23 into the material bin 1 under its own gravity and finally be discharged from the discharge port of the material bin 1.

[0091] Wherein, when the material throwing plate 23 shields the feeding port 11, the material throwing plate 23 can be in a nearly horizontal state relative to the material bin 1. Moreover, the end of the material throwing plate 23 can be in contact with or close to the inner wall of the material bin 1, so that the material throwing plate 23 can receive the waste material extruded from the print head to cool down the waste material. After the waste material falls on the material throwing plate 23, part of the waste material can accumulate into a mass, reducing the looseness of the waste material and making the volume of the waste material smaller, which is not only convenient for the waste material to be discharged from the material bin 1 but also convenient for the collection of the waste material.

[0092] In some embodiments, referring to Figure 8 , the material bin 1 may further include a discharge port communicating with the feeding port 11. Along the direction of gravity, the feeding port 11 is located above the discharge port, and the bottom wall 12 of the material bin 1 is inclined downward in the direction towards the discharge port. After the rotating rod 22 rotates in the fifth direction, the end of the material throwing plate 23 faces the bottom wall 12 of the material bin 1.

[0093] After the rotating rod 22 rotates in a fifth reverse direction opposite to the fourth direction under the action of gravity, the material throwing plate 23 is inclined downward relative to the material bin 1 and faces the bottom wall 12 of the material bin 1. Since the bottom wall 12 of the material bin 1 is inclined downward in the direction towards the discharge port, after the waste material falls from the material throwing plate 23, it can smoothly pass through the discharge port and be discharged from the material bin 1 under the guiding action of the bottom wall 12 of the material bin 1.

[0094] An embodiment of the present invention further provides a three-dimensional printer, including the aforementioned material throwing device.

[0095] The 3D printer provided by the embodiment of the present utility model includes a material throwing device, so the 3D printer has all the beneficial effects of the material throwing device, which will not be elaborated here.

[0096] Reference numeral 1. A material throwing device is applied to a 3D printer. The 3D printer includes a print head and comprises:

[0097] A material bin 1, and the material bin 1 includes a material throwing channel;

[0098] A material throwing member 2, and the material throwing member 2 is rotatably arranged at the material throwing channel;

[0099] A triggering member 3, the triggering member 3 is connected to the material throwing member 2, and the triggering member 3 is used for driving the material throwing member 2 to rotate when being subjected to an external force;

[0100] At least a part of the triggering member 3 is a flexible member, and at least a part of the triggering member 3 is used for deforming when being subjected to an external force;

[0101] Reference numeral 2. The material throwing device based on reference numeral 1,

[0102] The material throwing channel includes a material inlet 11, and the material throwing member 2 is arranged at the material inlet 11;

[0103] The triggering member 3 is used for driving the material throwing member 2 to rotate when being subjected to an external force, including that the triggering member 3 is used for driving the material throwing member 2 to rotate relative to the material bin 1 to block at least part of the material inlet 11 when being subjected to a first acting force in a first direction by the print head;

[0104] At least a part of the triggering member 3 is used for deforming when being subjected to an external force, including that at least a part of the triggering member 3 is used for deforming when being subjected to a second acting force in a second direction by the print head;

[0105] The first direction is different from the second direction.

[0106] Reference numeral 3. The material throwing device based on reference numeral 1,

[0107] The triggering member 3 is a flexible member;

[0108] When the triggering member 3 is subjected to the first acting force, the deformation amount of the triggering member 3 is a first deformation amount;

[0109] When the triggering member 3 is subjected to the second acting force, the deformation amount of the triggering member 3 is a second deformation amount;

[0110] The first deformation amount is less than the second deformation amount.

[0111] Reference numeral 4. The material throwing device based on reference numeral 3,

[0112] The part on the trigger member 3 for receiving the first acting force or the second acting force is the force-receiving part;

[0113] The dimension of the cross-section of at least the force-receiving part of the trigger member 3 in the first direction is greater than its dimension in the second direction.

[0114] Label 5. The throwing device based on Label 4,

[0115] The first direction is perpendicular to the second direction;

[0116] The cross-section of the force-receiving part is a rectangular surface, the length direction of the rectangular surface is consistent with the first direction, and the width direction of the rectangular surface is consistent with the second direction.

[0117] Label 6. The throwing device based on Label 3,

[0118] The trigger member 3 includes a first end 31 far from the throwing member 2, and the first end 31 bends and extends towards the third direction, and the third direction is opposite to the first direction;

[0119] The first end 31 is used to receive the first acting force so that the throwing member 2 blocks the feeding port 11.

[0120] Label 7. The throwing device based on Label 3,

[0121] The throwing member 2 is provided with a mounting hole 21;

[0122] The trigger member 3 includes a second end 32 close to the throwing member 2, and the second end 32 is inserted into the mounting hole 21.

[0123] Label 8. The throwing device based on Label 7,

[0124] The mounting hole 21 includes adjacent first hole section 211 and second hole section 212, and the dimension of the first hole section 211 is greater than that of the second hole section 212;

[0125] The outer surface of the second end 32 is provided with a mounting groove 321, and the mounting groove 321 extends along the circumferential direction of the trigger member 3;

[0126] The second end 32 is inserted into the first hole section 211 and passes through the second hole section 212; the second hole section 212 is engaged with the mounting groove 321.

[0127] Label 9. The throwing device based on Label 8,

[0128] The second end 32 includes a first section 322 and a second section 323 connected to each other, the dimension of the second section 323 is greater than that of the first section 322, and a stepped surface 324 is formed at the connection between the first section 322 and the second section 323;

[0129] The first section 322 is inserted into the first hole section 211 and passes through the second hole section 212; the installation groove 321 is formed in the first section 322;

[0130] The stepped surface 324 abuts against the end edge of the first hole section 211.

[0131] Reference numeral 10. The throwing device based on reference numeral 2, the throwing member 2 is rotatably connected to the bin 1, and the plane where the rotation direction of the throwing member 2 is located is parallel to the first direction.

[0132] Reference numeral 11. The throwing device based on reference numeral 10,

[0133] The throwing member 2 is used to rotate relative to the bin 1 to the first position along the fourth direction under the drive of the triggering member 3, the throwing member 2 contacts the inner wall of the bin 1, or the distance between the throwing member 2 and the inner wall of the bin 1 is less than the set distance, so that the throwing member 2 blocks at least part of the feeding port 11;

[0134] The throwing member 2 is further used to rotate relative to the bin 1 to the second position along the fifth direction under the action of gravity, so that the area of the feeding port 11 blocked by the throwing member 2 is smaller than the area of the feeding port 11 blocked by the throwing member 2 in the first position;

[0135] The fifth direction is opposite to the fourth direction, and the plane where the fifth direction and the fourth direction are located is the plane where the rotation direction of the throwing member 2 is located.

[0136] Reference numeral 12. The throwing device based on reference numeral 11,

[0137] The throwing member 2 includes a rotating rod 22 and a throwing plate 23, the rotating rod 22 is rotatably connected to the bin 1, one end of the rotating rod 22 is connected to the triggering member 3, the other end of the rotating rod 22 is connected to the throwing plate 23, the throwing plate 23 is located inside the bin 1, and at least part of the triggering member 3 is located outside the bin 1;

[0138] The rotating rod 22 is used to rotate relative to the bin 1 along the fourth direction under the drive of the triggering member 3, so that the throwing plate 23 blocks at least part of the feeding port 11;

[0139] The rotating rod 22 is further used to rotate relative to the bin 1 along the fifth direction under the action of gravity, so that the throwing plate 23 is inclined downward relative to the bin 1.

[0140] Reference numeral 13. The throwing device based on reference numeral 12,

[0141] The bin 1 further includes a discharge port communicated with the feeding port 11;

[0142] Along the direction of gravity, the feeding port 11 is located above the discharge port; the bottom wall 12 of the bin 1 is inclined downward in the direction towards the discharge port;

[0143] After the rotating rod 22 rotates in the fifth direction, the end of the material throwing plate 23 faces the bottom wall 12 of the silo 1.

[0144] Reference numeral 14, A three-dimensional printer, comprising: a material throwing device based on any one of References 1 to 13.

[0145] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A throwing device, applied to a 3D printer, the 3D printer comprising a print head, characterized in that: include: A silo, the silo comprising a material throwing channel; A throwing piece, the throwing piece is rotatably arranged at the throwing channel; A triggering member, the triggering member is connected to the throwing member, and the triggering member is used to drive the throwing member to rotate when subjected to an external force; At least a portion of the trigger member is a flexible member, and at least a portion of the trigger member is used to deform when subjected to an external force.

2. The throwing device according to claim 1, characterized in that: The throwing channel comprises an inlet, and the throwing piece is arranged at the inlet; The trigger member is used to drive the ejector member to rotate when subjected to an external force, including the trigger member being used to drive the ejector member to rotate relative to the material bin to cover at least a portion of the material inlet when subjected to a first force applied by the print head along a first direction; At least a portion of the trigger member is configured to deform when subjected to an external force, including at least a portion of the trigger member being configured to deform when subjected to a second force acting on the print head along a second direction; The first direction and the second direction are different.

3. The throwing device according to claim 2, characterized in that: The trigger member is a flexible member; When the trigger member is subjected to the first force, the deformation amount of the trigger member is the first deformation amount; When the trigger member is subjected to the second force, the deformation amount of the trigger member is the second deformation amount; The first deformation amount is smaller than the second deformation amount.

4. The throwing device according to claim 3, characterized in that: The part of the trigger member used for receiving the first acting force or the second acting force is the force-bearing part; The dimension of the cross section of at least the force-bearing portion of the trigger member in the first direction is greater than the dimension of the cross section in the second direction.

5. The throwing device according to claim 4, characterized in that: The first direction is perpendicular to the second direction; The cross section of the force-bearing portion is a rectangular surface, the length direction of the rectangular surface is consistent with the first direction, and the width direction of the rectangular surface is consistent with the second direction.

6. The throwing device according to claim 3, characterized in that: The trigger member comprises a first end away from the ejector member, the first end is bent and extends toward a third direction, and the third direction is opposite to the first direction; The first end is used to receive the first force so that the throwing member covers the feeding port.

7. The throwing device according to claim 3, characterized in that: The throwing piece is provided with a mounting hole; The trigger member includes a second end close to the ejection member, and the second end is inserted into the mounting hole.

8. The throwing device according to claim 7, characterized in that: The mounting hole comprises a first hole segment and a second hole segment adjacent to each other, wherein the size of the first hole segment is larger than the size of the second hole segment; An outer surface of the second end is provided with a mounting groove, and the mounting groove extends along the circumference of the trigger member; The second end is inserted into the first hole section and passes through the second hole section; the second hole section is snap-connected with the installation groove.

9. The throwing device according to claim 8, characterized in that: The second end includes a first section and a second section connected to each other, the second section is larger than the first section, and a step surface is formed at the connection between the first section and the second section; The first section is inserted into the first hole section and passes through the second hole section; the installation groove is opened in the first section; The step surface abuts against an end edge of the first hole segment.

10. The throwing device according to claim 2, characterized in that: The throwing member is rotatably connected to the silo, and a plane where the rotation direction of the throwing member lies is parallel to the first direction.

11. The throwing device according to claim 10, characterized in that: The material throwing member is used to rotate relative to the silo to a first position along a fourth direction under the drive of the trigger member, and the material throwing member contacts the inner wall of the silo, or the distance between the material throwing member and the inner wall of the silo is less than a set distance, so that the material throwing member blocks at least a part of the material inlet; The throwing member is also used to rotate to a second position along a fifth direction relative to the silo under the action of gravity, so that the area of ​​the feeding port covered by the throwing member is smaller than the area of ​​the feeding port covered by the throwing member in the first position; The fifth direction is opposite to the fourth direction, and the plane where the fifth direction and the fourth direction are located is the plane where the rotation direction of the throwing member is located.

12. The throwing device according to claim 11, characterized in that: The material throwing member includes a rotating rod and a material throwing plate, wherein the rotating rod is rotatably connected to the material bin, one end of the rotating rod is connected to the trigger member, and the other end of the rotating rod is connected to the material throwing plate, the material throwing plate is located inside the material bin, and at least part of the trigger member is located outside the material bin; The rotating rod is used to rotate relative to the material bin along the fourth direction under the drive of the trigger member, so that the ejection plate covers at least a portion of the material inlet; The rotating rod is also used to rotate along the fifth direction relative to the silo under the action of gravity, so that the throwing plate is tilted downward relative to the silo.

13. The throwing device according to claim 12, characterized in that: The silo also includes a discharge port connected to the feed port; Along the direction of gravity, the feed inlet is located above the discharge outlet; the bottom wall of the silo is inclined downward toward the discharge outlet; After the rotating rod rotates along the fifth direction, the end of the ejection plate faces the bottom wall of the silo.

14. A three-dimensional printer, characterized in that: include: A throwing device as claimed in any one of claims 1 to 13.

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