Propelling mechanism for 3D printer consumables

Abstract

The utility model provides a 3D printer consumable pushing mechanism which comprises an extrusion head, a connecting pipe connected to a basic head and used for moving consumables, and a cold air compression pump located on one side of the connecting pipe and connected with the connecting pipe, the connecting pipe is communicated with a feeding port in the extrusion head, and a fixing groove is formed in the connecting pipe. According to the propelling mechanism for the 3D printer consumables, when the extrusion head drives the consumables to move, the cold air compression pump enables air to form airflow to be blown into the connecting pipe, and the airflow entering the connecting pipe spirally extends to the two ends of the connecting pipe in the fixing groove; the compressed air in the connecting pipe can effectively reduce friction between the consumables and the inner wall of the connecting pipe, the consumables are prevented from being heated and softened due to friction, meanwhile, the airflow in the connecting pipe can be blown out towards the extrusion head, the extrusion head can be cooled, the consumables in the extrusion head are further prevented from being softened, the extrusion head drives the consumables to move more stably, and the service life of the consumables is prolonged. And the printing of the printer is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a propulsion mechanism for consumables of a 3D printer. Background Art

[0002] 3D printer is a machine of cumulative manufacturing technology, i.e. rapid prototyping technology. It is based on a digital model file and uses special wax materials, powdered metal or plastic and other adhesive materials to print layers of adhesive materials to manufacture three-dimensional objects. The timely supply of consumables is a very important process when printing with a 3D printer. In the prior art, the consumables of the propulsion mechanism of the 3D printer consumables are connected in the connecting tube. When the consumables are squeezed and moved in the extruder head, the consumables move in the connecting tube and generate friction and heat with the inner wall of the connecting tube. The consumables are softened by the heat. When the extruder head squeezes the softened consumables, the consumables break and the printer fails to print.

[0003] Therefore, it is necessary to provide a propulsion mechanism for 3D printer consumables to solve the above technical problems. Utility Model Content

[0004] The utility model provides a propulsion mechanism for 3D printer consumables, which solves the problem that the consumables of the propulsion mechanism for 3D printer consumables are connected in a connecting tube, when the consumables are squeezed and moved in an extruder head, the consumables move in the connecting tube and generate friction and heat with the inner wall of the connecting tube, the consumables are softened by the heat, and when the extruder head squeezes the softened consumables, the consumables are broken, resulting in printing failure of the printer.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a propulsion mechanism for 3D printer consumables, including an extruder head, a connecting tube connected to the extruder head for moving consumables, and a cold air compression pump located on one side of the connecting tube and connected to the connecting tube, the connecting tube is communicated with a feed port on the extruder head, and a plurality of spiral fixing grooves extending along the length direction of the connecting tube are arranged in the connecting tube.

[0006] In the utility model, a three-way joint is arranged in the connecting pipe, and the connecting pipe includes a first fluoron tube, a second fluoron tube, and a third fluoron tube, the first fluoron tube, the second fluoron tube, and the third fluoron tube are respectively connected to the interface of the three-way joint, one end of the first fluoron tube is connected to the feed port of the extruder head, one end of the second fluoron tube is connected to the cold air compression pump, and one end of the third fluoron is connected to the external consumables discharger.

[0007] In the utility model, the feed port of the extruder head is also provided with an expansion buckle, and one end of the first fluorocarbon tube is connected to the expansion buckle.

[0008] In the utility model, the diameter of the connecting pipe is 4 mm.

[0009] In the utility model, the radius of the fixing groove is 0.5 mm.

[0010] In the utility model, the extrusion head comprises a driving device and an extrusion device connected to one side of the driving device for extruding the consumables and driving the consumables to move.

[0011] In the utility model, the extrusion device includes a fixed frame, a speed reducer connected to the fixed frame and connected to the output shaft of the driving device, a first connecting shaft connected to the fixed frame and connected to the speed reducer, a first extrusion gear connected to the first connecting shaft, a swing arm that can swing in the fixed frame, and a second extrusion gear that is rotatably connected to the swing arm and extrude or release the consumables with the first extrusion gear.

[0012] In the utility model, the speed reducer comprises a second connecting shaft, a first gear connected to the second connecting shaft and connected to the output shaft of the driving device, and a second gear connected to the first connecting shaft, wherein the diameter of the second gear is smaller than the diameter of the first gear;

[0013] The first connecting shaft is also provided with a third gear meshing with the second gear, and the diameter of the third gear is greater than the diameter of the first gear.

[0014] In the utility model, the swing arm includes an extension plate, and the extension plate is provided with a through hole for the fixing frame to be clamped on the extension plate. The swing arm swings around the through hole to drive the second extrusion gear to approach or move away from the first extrusion gear.

[0015] In the utility model, the fixing frame is also provided with a spring for squeezing the swing arm, a screw for fixing and adjusting the tightness of the spring, and a toggle rod for toggling the swing arm to swing, and the spring and the toggle rod are respectively located at the two ends of the swing arm.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the propulsion mechanism of the 3D printer consumables of the utility model drives the consumables to move through the extruder head, and the cold air compression pump forms an airflow with the air and blows it into the connecting pipe. The airflow entering the connecting pipe extends in a spiral shape in the fixed groove toward the two ends of the connecting pipe. The compressed gas in the connecting pipe can effectively reduce the friction between the consumables and the inner wall of the connecting pipe, and prevent the consumables from being softened due to friction and heat. At the same time, the airflow in the connecting pipe can also be blown out in the direction of the extruder head, which can cool the extruder head, further prevent the consumables in the extruder head from softening, and make the extruder head drive the consumables to move more stably, effectively ensuring the printing of the printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0018] Figure 1 It is a three-dimensional diagram of the propulsion mechanism of the 3D printer consumables of the utility model.

[0019] Figure 2 This is a three-dimensional diagram of the connecting pipe of the propulsion mechanism of the 3D printer consumables of the utility model.

[0020] Figure 3 The utility model is a three-dimensional diagram of the extruder head of the propulsion mechanism of the 3D printer consumables.

[0021] Figure 4 The exploded view is of the extrusion head of the propulsion mechanism of the 3D printer consumables of the utility model.

[0022] Figure 5 The utility model is a three-dimensional diagram of the extrusion device of the propulsion mechanism of the 3D printer consumables.

[0023] Figure 6 It is a side view of the extruder head of the propulsion mechanism of the 3D printer consumables of the utility model.

[0024] Figure 7 for Figure 6 Section view taken along the cutting line AA.

[0025] Figure 8 The utility model is a three-dimensional diagram of the swing arm of the propulsion mechanism of the 3D printer consumables. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0027] Unless otherwise defined, technical or scientific terms used herein shall have the common meanings understood by one of ordinary skill in the art to which the present disclosure belongs.

[0028] The words "first", "second" and similar words used in the patent application specification and claims of this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] The following is a preferred embodiment of a propulsion mechanism for 3D printer consumables provided by the utility model that can solve the above technical problems.

[0031] Please refer to Figure 1 and Figure 2 ,in Figure 1 This is a three-dimensional diagram of the propulsion mechanism of the 3D printer consumables of the utility model. Figure 2 This is a three-dimensional diagram of the connecting pipe of the propulsion mechanism of the 3D printer consumables of the utility model.

[0032] In the figures, structurally similar elements are denoted by the same reference numerals.

[0033] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0034] The utility model provides a 3D printer consumables propulsion mechanism, comprising an extruder head 12, a connecting pipe 13 connected to the extruder head 12 for moving the consumables, and a cold air compression pump 11 located at one side of the connecting pipe 13 and connected to the connecting pipe 13, the connecting pipe 13 is communicated with a feed port on the extruder head 12, a plurality of spiral fixing grooves 135 extending along the length direction of the connecting pipe 13 are arranged in the connecting pipe 13, the extruder head 12 is used to extrude the consumables and drive the consumables to move, the connecting pipe 13 is used for the consumables to pass through, and prevent the consumables from being torn off due to external factors, and the cold air compression pump 11 is used to inflate the connecting pipe 13 and cool the extruder head 12, and prevent the extruder head 12 from extruding the consumables due to excessive temperature. To solve the problem of broken consumables, when the consumables are extruded, first, the consumables are passed through the connecting tube 13 and connected to the connecting head, and the extruder head 12 and the cold air compression pump 11 are started. When the extruder head 12 is started, the extruder head 12 extrude the consumables and pull the consumables to move, and the cold air compression pump 11 blows out cold air, and the cold air is blown out in a spiral shape to both ends of the connecting tube 13 in the fixed groove 135 of the connecting tube 13, so that there is rotating compressed gas in the connecting tube 13. On the one hand, it can effectively reduce the friction between the consumables and the inner wall of the connecting tube 13, and on the other hand, it can effectively dissipate heat for the extruder head 12 to prevent the consumables from breaking when the extruder head 12 extrude the consumables, thereby effectively ensuring the printing of the printer.

[0035] A three-way joint 134 is provided in the connecting tube 13, and the connecting tube 13 includes a first fluorocarbon tube 133, a second fluorocarbon tube 131, and a third fluorocarbon tube 132. The first fluorocarbon tube 133, the second fluorocarbon tube 131, and the third fluorocarbon tube 132 are respectively connected to the interface of the three-way joint 134, one end of the first fluorocarbon tube 133 is connected to the feed port of the extruder head 12, one end of the second fluorocarbon tube 131 is connected to the cold air compression pump 11, and one end of the third fluorocarbon tube 132 is connected to the external consumables discharger. The diameter of the connecting tube 13 is 4 mm, and the radius of the fixing groove 135 is 0.5 mm. The three-way joint 134 is used to facilitate the connection. The first fluorocarbon tube 133, the second fluorocarbon tube 131, and the third fluorocarbon tube 132 are connected. The first fluorocarbon tube 133 is connected to the extrusion head 12 and the three-way joint 134. The second fluorocarbon tube 131 is connected to the cold air compression pump 11 and the three-way joint 134. The third fluorocarbon tube 132 is used to connect to the three-way joint 134 and the consumables discharger, so that the cold air compression pump 11 is connected to the first fluorocarbon tube 133 and the third fluorocarbon tube 132, thereby reducing the friction between the consumables in the first fluorocarbon tube 133 and the third fluorocarbon tube 132 and the inner walls of the first fluorocarbon tube 133 and the third fluorocarbon tube 132, and at the same time, it can also dissipate heat for the extrusion head 12.

[0036] The feed port of the extrusion head 12 is also provided with an expansion buckle 124, and one end of the first fluoron tube 133 is connected to the expansion buckle 124. On the one hand, the expansion buckle 124 is used to fix the first fluoron tube 133. On the other hand, the first fluoron tube 133 is fixed in the extrusion head 12 through the expansion buckle 124, which can effectively prevent the first fluoron tube 133 from separating from the extrusion head 12.

[0037] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 3 This is a three-dimensional diagram of the extruder head of the propulsion mechanism of the 3D printer consumables of the utility model. Figure 4 This is an exploded view of the extruder head of the propulsion mechanism of the 3D printer consumables of the utility model. Figure 5 This is a three-dimensional diagram of the extrusion device of the propulsion mechanism of the 3D printer consumables of the utility model. Figure 6 This is a side view of the extruder head of the propulsion mechanism of the 3D printer consumables of the utility model. Figure 7 for Figure 6 Section view taken along the cutting line AA.

[0038] The extrusion head 12 includes a driving device 121 and an extrusion device connected to one side of the driving device 121 for extruding consumables and driving the consumables to move. The extrusion device includes a fixed frame 122, a speed reducer 125 connected to the fixed frame 122 and connected to the output shaft of the driving device 121, a first connecting shaft 1253 connected to the fixed frame 122 and connected to the speed reducer 125, a first extrusion gear 12a connected to the first connecting shaft 1253, a swing arm 129 that can swing in the fixed frame 122, and a second extrusion gear 12b that is rotatably connected to the swing arm 129 and extrude or release the consumables with the first extrusion gear 12a. The driving device 121 is used to drive the extrusion device to extrude the consumables and drive the consumables to move. The fixed frame 122 is used to fix the speed reducer 125, the first connecting shaft 1253, and the swing arm 129. The first extrusion gear 12a is connected to the first connecting shaft 1253 and rotates The speed reducer 125 is used to drive the first connecting shaft 1253 to rotate, and the swing arm 129 is used to install the second extrusion gear 12b and drive the second extrusion gear 12b away from or close to the first extrusion gear 12a. When the first extrusion gear 12a and the second extrusion gear 12b are relative to each other, the gap between the first extrusion gear 12a and the second extrusion gear 12b becomes smaller. When the consumable is located between the first extrusion gear 12a and the second extrusion gear 12b, the consumable is interference connected between the first extrusion gear 12a and the second extrusion gear 12b. When the first extrusion gear 12a rotates, the first extrusion gear 12a drives the second extrusion gear 12b to rotate through the consumable, thereby moving the consumable. When the second extrusion gear 12b is away from the first extrusion gear 12a, the gap between the first extrusion gear 12a and the second extrusion gear 12b becomes larger, thereby failing to drive the consumable to move.

[0039] In this embodiment, the driving device 121 is a motor, but is not limited to using only a motor.

[0040] The speed reducer 125 includes a second connecting shaft 128, a first gear 1251 connected to the second connecting shaft 128 and connected to the output shaft of the driving device 121, and a second gear 1252 connected to the first connecting shaft 1253. The diameter of the second gear 1252 is smaller than the diameter of the first gear 1251. The first connecting shaft 1253 is also provided with a third gear 130 meshing with the second gear 1252. The diameter of the third gear 130 is larger than the diameter of the first gear 1251. The first gear 1251 is connected to the driving device 121. The output shaft is meshed with the driving device 121, and the driving device 121 drives the first gear 1251 to rotate, the first gear 1251 drives the second gear 1252 to rotate, the second gear 1252 drives the third gear 130 to rotate, and the third gear 130 drives the first extrusion gear 12a to rotate, and the diameter of the first gear 1251 is greater than the diameter of the second gear 1252, and the diameter of the third gear 130 is greater than the diameter of the first gear 1251, thereby achieving the reduction in the speed of the first extrusion gear 12a and preventing the first extrusion gear 12a from rotating too fast.

[0041] Please refer to Figure 8 , Figure 8 This is a stereoscopic diagram of the swing arm of the propulsion mechanism of the 3D printer consumables of the utility model. The swing arm 129 includes an extension plate 1291. The extension plate 1291 is provided with a through hole 1292 for the fixing frame 122 to be clamped on the extension plate 1291. The swing arm 129 swings around the through hole 1292 as the center to drive the second extrusion gear 12b to approach or move away from the first extrusion gear 12a. The extension plate 1291 is used to extend the length of the swing arm 129. The extension plate 1291 is provided with a through hole 1292. The fixing frame 122 is provided with a positioning structure clamped in the through hole 1292. The swing arm 129 rotates around the through hole 1292 as the rotation center, thereby driving the second extrusion gear 12b to move away from or approach the first extrusion gear 12a.

[0042] The fixing frame 122 is also provided with a spring 126 for squeezing the swing arm 129, a screw 127 for fixing the spring 126 and adjusting the tightness of the spring 126, and a toggle rod 123 for toggling the swing arm 129 to swing. The spring 126 and the toggle rod 123 are respectively located at both ends of the swing arm 129, the screw 127 is used to fix the spring 126, the toggle rod 123 and the spring 126 are respectively located at both ends of the swing arm 129 to limit the swing arm 129. When the toggle rod 123 moves, the spring 126 is used to always squeeze one end of the swing arm 129 to adjust the position of the swing arm 129, thereby adjusting the position of the second extrusion gear 12b, so that the second extrusion gear 12b is moved away from or close to the first extrusion gear 12a.

[0043] Working principle:

[0044] When the printer is printing, first, the consumables are passed through the third fluorocarbon tube 132, the three-way joint 134, and the first fluorocarbon tube 133, and the consumables after passing through are clamped between the first extrusion gear 12a and the second extrusion gear 12b, and the cold air compression pump 11 is started. The cold air compression pump 11 blows air into the three-way joint 134 from the second fluorocarbon to form an airflow, and the airflow entering the three-way joint 134 is diffused in the direction of the first fluorocarbon tube 133 and the third fluorocarbon tube 132. When the consumables are connected to the first extrusion gear 12a and the second extrusion gear 12b, the cold air compression pump 11 is started. The cold air compression pump 11 blows air into the three-way joint 134 from the second fluorocarbon to form an airflow. A spiral fixing groove 135 is provided in the first fluorocarbon tube 133 and the third fluorocarbon tube 132, so that there is rotating compressed gas in the first fluorocarbon tube 133 and the third fluorocarbon tube 132, reducing the friction between the consumables and the first fluorocarbon tube 133 and the third fluorocarbon tube 132, and effectively reducing the problem of softening of the consumables due to friction with the inner wall of the connecting tube 13. At the same time, when the airflow in the first fluorocarbon tube 133 is blown out from the opening direction of the first fluorocarbon tube 133, since the first fluorocarbon tube 133 is also connected to the feed port direction of the extruder head 12, the airflow can also The extruder 12 dissipates heat to further reduce the problem of softening of the consumables due to heat. The extruder 12 is started, and the driving device 121 drives the first gear 1251 to rotate. The first gear 1251 drives the second gear 1252 to rotate, and the second gear 1252 drives the third gear 130 to rotate. When the third gear 130 rotates, it drives the first extrusion gear 12a to rotate. After the transition between the second gear 1252 and the third gear 130, the rotation speed of the first extrusion gear 12a is reduced. When the first extrusion gear 12a rotates, since the consumable is interference-connected between the first extrusion gear 12a and the second extrusion gear 12b, when the first extrusion gear 12a drives the consumable to move, the second extrusion gear 12b passively follows the first extrusion gear 12a to rotate, thereby driving the consumable to move. In the process of moving the consumable, due to the action of the cold air compression pump 11, the consumable can be stably clamped and moved by the first extrusion gear 12a and the second extrusion gear 12b, and the consumable can be continuously and stably provided to the printer for printing.

[0045] When the propulsion mechanism of the 3D printer consumables of this preferred embodiment drives the consumables to move through the extruder head, the cold air compression pump forms an airflow with the air and blows it into the connecting tube. The airflow entering the connecting tube extends in a spiral shape in the fixed groove toward both ends of the connecting tube. The compressed gas in the connecting tube can effectively reduce the friction between the consumables and the inner wall of the connecting tube, and prevent the consumables from being softened due to friction and heat. At the same time, the airflow in the connecting tube can also be blown out in the direction of the extruder head, which can cool the extruder head and further prevent the consumables in the extruder head from softening, so that the extruder head drives the consumables to move more stably, thereby effectively ensuring the printing of the printer.

[0046] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A propulsion mechanism for 3D printer consumables, characterized in that: It includes an extrusion head, a connecting pipe connected to the extrusion head for moving consumables, and a cold air compression pump located on one side of the connecting pipe and connected to the connecting pipe. The connecting pipe is communicated with a feed port on the extrusion head, and a plurality of spiral fixing grooves extending along the length direction of the connecting pipe are arranged in the connecting pipe.

2. The propulsion mechanism for 3D printer consumables according to claim 1, characterized in that: A three-way joint is arranged in the connecting tube, and the connecting tube includes a first fluoron tube, a second fluoron tube, and a third fluoron tube, the first fluoron tube, the second fluoron tube, and the third fluoron tube are respectively connected to the interfaces of the three-way joint, one end of the first fluoron tube is connected to the feed port of the extruder head, one end of the second fluoron tube is connected to the cold air compression pump, and one end of the third fluoron tube is connected to an external consumables discharger.

3. The propulsion mechanism for 3D printer consumables according to claim 2, characterized in that: The feed port of the extruder head is also provided with an expansion buckle, and one end of the first fluorocarbon tube is connected to the expansion buckle.

4. The propulsion mechanism for 3D printer consumables according to claim 1, characterized in that: The diameter of the connecting tube is 4 mm.

5. The propulsion mechanism for 3D printer consumables according to claim 1, characterized in that: The radius of the fixing groove is 0.5 mm.

6. The propulsion mechanism for 3D printer consumables according to claim 1, characterized in that: The extrusion head comprises a driving device and an extrusion device connected to one side of the driving device for extruding the consumable material and driving the consumable material to move.

7. The propulsion mechanism for 3D printer consumables according to claim 6, characterized in that: The extrusion device includes a fixed frame, a speed reducer connected to the fixed frame and connected to the output shaft of the driving device, a first connecting shaft connected to the fixed frame and connected to the speed reducer, a first extrusion gear connected to the first connecting shaft, a swing arm that can swing in the fixed frame, and a second extrusion gear that is rotatably connected to the swing arm and extrude or release the consumables with the first extrusion gear.

8. The propulsion mechanism for 3D printer consumables according to claim 7, characterized in that: The speed reducer comprises a second connecting shaft, a first gear connected to the second connecting shaft and connected to the output shaft of the driving device, and a second gear connected to the first connecting shaft, wherein the diameter of the second gear is smaller than the diameter of the first gear; The first connecting shaft is also provided with a third gear meshing with the second gear, and the diameter of the third gear is greater than the diameter of the first gear.

9. The propulsion mechanism for 3D printer consumables according to claim 7, characterized in that: The swing arm includes an extension plate, and the extension plate is provided with a through hole for the fixing frame to be clamped on the extension plate. The swing arm swings around the through hole to drive the second extrusion gear to approach or move away from the first extrusion gear.

10. The propulsion mechanism for 3D printer consumables according to claim 9, characterized in that: The fixing frame is also provided with a spring for pressing the swing arm, a screw for fixing and adjusting the tightness of the spring, and a toggle rod for toggling the swing arm to swing, and the spring and the toggle rod are respectively located at two ends of the swing arm.

Images