TW202033381A - Feeding control system of three-dimensional printer and control method thereof - Google Patents

Abstract

A feeding control system of a three-dimensional printer for a filament and a control method thereof are provided in the present disclosure. The feeding control system has first feeding device, a second feeding device and a feeding sensor, the first feeding device has an output end, a fixed pulley assembly, a movable pulley assembly and a controller. The filament is clamped between the fixed pulley assembly and the movable pulley assembly and thereby transported to the output end. The controlled is arranged corresponding to the movable pulley assembly. The second feeding device is arranged in the three-dimensional printer. The feeding sensor is arranged corresponding to the second feeding device. The feeding sensor detects the filament clamped by the second feeding device and send a release signal. The controller moves the movable pulley assembly far from the fixed pulley assembly to release the filament when receives the release signal.

Description

Feeding control system of three-dimensional printer and its feeding control method

The invention relates to a peripheral device of a three-dimensional printer, and in particular to a feed control system of a three-dimensional printer and a feed control method thereof.

Fused Deposition Modeling (FDM) technology is one of the three-dimensional printer's forming principles. It mainly heats the materials used to a certain temperature to form a semi-molten state, and then squeezes the materials on a flat shelf After quickly returning to a solid state. Repeat the stacking operation in this way to print out three-dimensional objects.

In order to increase the feeding speed of the aforementioned materials, the current feeding horse and the forward feed motor drive the material belt to the forward feed nozzle after use, which can save the time for the user to bring the material belt to the nozzle, thereby increasing the convenience of use. Among them, when the material belt is brought to the forward feeding motor, the feeding motor and the rear feeding horse are synchronously belting at this time.

However, when the current feeding motor is pulling the material, the rear feeding motor will start to push the material synchronously, but in the process of fast printing or retraction, the speed of the forward feeding motor and the rear feeding motor are prone to be out of sync, causing wire wear and wire squeezing. Problems such as material pressure blocking, wire breakage and lack of material lead to poor printing quality.

In view of this, the inventor of the present invention focused on the above-mentioned prior art, and made great efforts to solve the above-mentioned problems, which became the goal of the inventor's development.

The present invention provides a feeding control system of a three-dimensional printer and a feeding control method thereof. When a second feeding device is used to clamp the feeding belt, the first feeding device releases the feeding belt and stops pushing the feeding. Solve the problem of different feeding speeds to improve the printing quality of the 3D printer.

In the embodiment of the present invention, the present invention provides a feed control system for a three-dimensional printer for a material belt. The feed control system includes: a first feed device, including a discharge end, a fixed A wheel set, a movable wheel set and a controller, the fixed wheel set and the movable wheel set clamp and transfer the material belt to the discharge end, the controller is set corresponding to the movable wheel set; a second feeding device , Installed inside the three-dimensional printer; and a feed sensor corresponding to the configuration of the second feed device, the feed sensor is used to sense that the second feed device clamps the tape A release signal is generated; wherein, after the controller receives the release signal, it drives the movable wheel set away from the fixed wheel set and releases the material belt.

In the embodiment of the present invention, the present invention provides a feeding control method for a three-dimensional printer, the steps of which include: a) providing a first feeding device, the first feeding device including a discharge end and a drive Wheel, the drive wheel drives and conveys a tape; b) a second feeding device is provided, and the second feeding device is installed inside the three-dimensional printer so that the tape enters the three-dimensional printing Machine-time driving and conveying the material belt; c) driving the first feeding device to drive and conveying the material belt to the three-dimensional printer through the discharge end; and d) entering the three-dimensional array on the material belt During the printing, the second feeding device is controlled to drive and convey the material belt, and the conveying of the material belt by the first feeding device is stopped.

Based on the above, when the second feeding device clamps to the tape, the first feeding device releases the tape and stops pushing, and only the second feeding device pulls the tape, thereby solving the problem of different feeding speeds. And avoid wire wear, wire extrusion and blocking, wire breakage and lack of material, so as to improve the printing quality of the three-dimensional printer.

The detailed description and technical content of the present invention will be described as follows in conjunction with the drawings. However, the accompanying drawings are for illustrative purposes only and are not used to limit the present invention.

Please refer to Figures 1 to 7, the present invention provides a three-dimensional printer feed control system and feed control method, used in a material belt 200, the feed control system 10 mainly includes a first feed The feeding device 1, a second feeding device 2, a feeding tube 3 and a feeding sensor 4.

As shown in FIG. 8, it is the steps of the feeding control method of the three-dimensional printer of the present invention. As shown in step a of Figure 8 and Figures 1 to 7, a first feeding device 1 is provided. The first feeding device 1 includes a main frame 11, a discharge end 12, a fixed wheel set 13, and a movable The wheel group 14 and a controller 15, the fixed wheel group 13 and the movable wheel group 14 jointly clamp the conveying belt 200 to the discharge end 12, and the controller 15 is arranged corresponding to the movable wheel group 14.

The detailed description is as follows. The fixed wheel set 13 includes a driving wheel 131 installed on the main frame 11, the driving wheel 131 drives and transmits a material belt 200, and the discharge end 12 is formed on the main frame 11 and corresponds to the rotation direction of the driving wheel 131 The movable wheel set 14 includes a movable frame 141 pivotally connected to the main frame 11 and a driven wheel 142 mounted on the movable frame 141 and configured corresponding to the driving wheel 131. A toothed portion 143 is provided on the bottom of the movable frame 141.

In addition, the controller 15 includes a motor 151 and a worm 152 that rotates with the motor 151. The movable frame 141 is screwed and driven by the toothed portion 143 and the worm 152, thereby driving the driven wheel 14 to approach the driving wheel 131 to clamp the conveying belt 200 , Or the driven wheel 142 is away from the driving wheel 131 to release the material belt 200.

Furthermore, the first feeding device 1 further includes two auxiliary rollers 16 installed on the main frame 11, the two auxiliary rollers 16 are arranged between the discharge end 12 and the driving wheel 131 and clamp the conveying belt 200. The roller 16 is used to guide the material belt 200 from the driving wheel 131 to the discharge end 12. Therefore, depending on the distance from the driving wheel 131 to the discharge end 12, the number of auxiliary rollers 16 can be selectively increased or the auxiliary roller 16 can be omitted.

As shown in step b of FIG. 8 and FIG. 1, the second feeding device 2 is installed inside the three-dimensional printer 100, and the second feeding device 2 is used to drive the material belt 200 to the feeding nozzle (not shown) , To drive the conveying belt 200 when the belt 200 enters the three-dimensional printer 100.

As shown in step c of FIG. 8 and FIGS. 1 to 5, the first feeding device 1 drives the conveying belt 200 to the three-dimensional printer 100 through the discharge end 12. The detailed description is as follows. The guide tube 3 is connected between the discharge end 12 and the second feeding device 2, and the guide tube 3 guides the material belt 200 from the discharge end 12 to the second feeding device 2.

In addition, in one embodiment, the guide tube 3 can be optionally not configured, and after the first feeding device 1 conveys the material belt 200 to the discharge end 12, the user manually operates the material belt 200 to receive it. Enter the second feeding device 2 (or the inside of the three-dimensional printer 100). The second feeding device 2 includes at least one drive wheel to pull the material belt 200, and its mechanism can be a design known to those skilled in the art, or it can be the same or similar to the first feeding device 1 described above. The design is also possible.

As shown in step d of Figure 8 and Figures 1 to 7, when the material belt 200 enters the three-dimensional printer 100, the second feeding device 2 is controlled to drive the conveying belt 200, and the first feeding device 1 is stopped for feeding With 200 transmission.

Further description is as follows, a feeding sensor 4 is provided, and the feeding sensor 4 is configured corresponding to the second feeding device 2 to sense the driving conveyor belt 200 of the second feeding device 2 and generate a release signal, namely The feed sensor 4 is used to sense that the second feed device 2 clamps the tape 200 to generate a release signal.

Among them, a controller 15 is provided, and the controller 15 is set corresponding to the first feeding device 1, and after receiving the release signal, the controller 15 stops the conveying of the material belt 200 by the first feeding device 1.

The detailed description is as follows. A fixed wheel set 13 and a movable wheel set 14 are provided. The driving wheel 131 is arranged on the fixed wheel set 13, and the movable wheel set 14 is controlled to be separated from the fixed wheel set 13 to release the material belt 200 and drive The wheel 131 stops the conveyance of the material belt 200 by the first feeding device 1, that is, after the motor 151 receives the release signal, the worm 152 is driven to rotate and the movable frame 141 is driven away from the driving wheel 131, and the driven wheel 142 is moved away from the driving wheel 131 to release the material belt 200, and the driving wheel 131 stops running after receiving the release signal.

As shown in Figure 1, the feed control system 10 of the present invention further includes a feed box 5 and a reel 6. The feed box 5 is arranged on one side of the three-dimensional printer, and the first feed device 1 and the reel 6 are accommodated In the material box 5, the reel 6 is arranged on one side of the first feeding device 1 and the material tape 200 is provided for winding, so that the material tape 200 can be wound into a reel shape by the reel 6 for easy replacement.

The use state of the feed control system 10 of the present invention is described as follows. First, as shown in Figures 1 to 3, the material tape 200 wound on the reel 6 is placed in the material box 5, and then the material tape 200 is inserted into the first Inside the feeding device 1, the material belt 200 is sandwiched between the driven wheel 142 and the driving wheel 131 and passed through the discharge end 12, that is, the pre-operation of automatic feeding is completed.

Furthermore, as shown in FIGS. 1 to 5, the driving wheel 131 and the driven wheel 142 jointly clamp the conveying belt 200 to the discharge end 12 after running, and then the guide tube 3 guides the material belt 200 from the discharge end 12. Transfer to the second feeding device 2.

In addition, as shown in FIGS. 1, 6 to 7, the feed sensor 4 senses that the second feed device 2 clamps the tape 200 and generates a release signal. After the motor 151 receives the release signal, it drives the worm 152 to rotate and Drive the movable frame 141 away from the driving wheel 131, and let the driven wheel 142 away from the driving wheel 131 to release the material belt 200, so that after the controller 15 receives the release signal, the drive movable wheel set 14 is moved away from the fixed wheel set 13 and the material belt 200 is released. The driving wheel 131 stops running after receiving the release signal, and only the second feeding device 2 pulls the material belt 200 to complete the automatic feeding operation.

As a result, when the conventional forward feed motor is pulling the material, the rear feed motor will start to push the material synchronously, and the speed of the front and rear feed motors is not synchronized. In contrast, when the second feeding device 2 of the present invention clamps to the material belt 200, the first feeding device 1 releases the material belt 200 and stops pushing, and only the second feeding device 2 pulls the material belt 200. Therefore, the problem of different feeding speeds is solved, and the occurrence of wire wear, wire squeeze blocking, wire breakage and shortage of material can be avoided, so as to improve the printing quality of the three-dimensional printer 100.

Please refer to Figures 9 to 10, which is another embodiment of the first feeding device 1 of the present invention. The embodiment of Figures 9 to 10 is substantially the same as the embodiment of Figures 1 to 7, Figures 9 to 10 The difference between this embodiment and the embodiment of FIGS. 1 to 7 is that the structure of the controller 15 is different.

Further description is as follows, the movable frame 141 has a protrusion 144 protruding, and the controller 15 includes a motor 151, a cam 153 and a return spring 154. The cam 153 rotates with the motor 151 and is arranged corresponding to one side of the protrusion 144. The return spring 154 Clamped on the other side of the main frame 11 and the lug 144, when the motor 151 drives the cam 153 against the lug 144, it can resist the return elastic force of the return spring 154, thereby driving the driven wheel 142 to approach the driving wheel 131 to clamp the transmission When the motor 151 drives the cam 153 to release the protrusion 144, the return spring 154 pushes against the protrusion 144, thereby driving the driven wheel 142 away from the driving wheel 131 to release the material belt 200. Those familiar with the art in this field should understand that the above-mentioned control can also be adjusted and designed to be reversed, that is, when the motor 151 drives the cam 153 against the protrusion 144, the driven wheel 142 is moved away from the drive wheel 131, and the motor 151 drives the cam 153 When the tab 144 is released, the driven wheel 142 is caused to approach the driving wheel 131.

Wherein, after the motor 151 receives the release signal, the driving cam 153 releases the protrusion 144, so that the return spring 154 pushes the movable frame 141 away from the driving wheel 131. In this way, the same functions and effects as the embodiments in FIGS. 1 to 7 can be achieved.

Please refer to FIG. 11, which is another embodiment of the feed control system 10 of the present invention. The embodiment of FIG. 11 is substantially the same as the embodiment of FIGS. 1-7, and the embodiment of FIG. 11 is similar to that of FIGS. 1-7. The difference of the embodiment is that the number of the first feeding device 1 is plural.

The detailed description is as follows. The numbers of the material belt 200 and the first feeding device 1 are respectively plural, and each material belt 20 is provided corresponding to each of the first feeding devices 1, and the guide tube 3 has a main body tube 31 at one end and an extension at the other end. There are a plurality of shunt pipes 32 communicating with the main pipe 31. The main pipe 31 is connected to the second feeding device 2, and each shunt pipe 32 is connected to each discharge end 12.

In addition, the feeding control system 10 of the present invention further provides a computer 7 and a plurality of feeding sensors 8. The computer 7 is electrically connected to each first feeding device 1, and each feeding sensor 8 corresponds to each first feeding device. 1 configure, and make each replenishment sensor 8 sense that the material belt 200 is separated from the discharge end 12 to generate a replenishment signal, that is, when the material belt 200 of the first feeding device 1 is used up, the replenishment sensor 8 8 will send out the replenishment signal.

Among them, after the computer 7 receives the replenishment signal of one of the first feeding devices 1, and causes the other first feeding device 1 to convey the material belt 200 through the corresponding branch pipe 32 to the main pipe 31, that is, to drive the other first feeding device 1 The fixed wheel set 13 and the movable wheel set 14 of the feeding device 1 clamp the conveying belt 200 to the shunt pipe 32 (or the material belt 200 has been conveyed to its corresponding shunt pipe 32 before being installed), so that the main pipe 31 is ready The material belt 200 is conveyed to the second feeding device 2 to prevent the three-dimensional printer 100 from being out of material and stopping operation, so that the feeding control system 10 has the feature of automatic feeding.

In summary, the feed control system and feed control method of the three-dimensional printer of the present invention have never been seen in similar products and publicly used, and it is industrially usable, novel and progressive, and fully meets the requirements of a patent application. , I filed an application in accordance with the Patent Law, please check carefully and grant the patent for this case to protect the rights of the inventor.

100: 3D printer

200: material belt

10: Feed control system

1: The first feeding device

11: Main frame

12: Discharge end

13: Fixed wheels

131: drive wheel

14: Activity wheel

141: Activity Frame

142: driven wheel

143: tooth pattern

144: Tab

15: Controller

151: Motor

152: Worm

153: Cam

154: return spring

16: auxiliary roller

2: The second feeding device

3: guide tube

31: Main tube

32: shunt pipe

4: Feed sensor

5: Material box

6: Reel

7: Computer

8: Replenishment sensor

a~d: steps

Figure 1 is a three-dimensional schematic diagram of the feed control system of the present invention.

Figure 2 is a perspective view of the first feeding device of the present invention.

Figure 3 is a schematic cross-sectional view of the first feeding device of the present invention.

Figure 4 is a perspective view of the first feeding device of the present invention in its use state.

Figure 5 is a cross-sectional view of the first feeding device of the present invention in use.

Figure 6 is a perspective view of another use state of the first feeding device of the present invention.

Figure 7 is a cross-sectional view of the first feeding device of the present invention in another use state.

Fig. 8 is a flow chart of the steps of the feeding control method of the three-dimensional printer of the present invention.

Fig. 9 is a perspective view of another embodiment of the first feeding device of the present invention in a use state.

Figure 10 is a cross-sectional view of another embodiment of the first feeding device of the present invention in use.

Figure 11 is a three-dimensional schematic diagram of another embodiment of the feed control system of the present invention.

1: The first feeding device

11: Main frame

12: Discharge end

14: Activity wheel

141: Activity Frame

143: tooth pattern

15: Controller

151: Motor

152: Worm

Claims (19)

A feed control system of a three-dimensional printer is used for a material belt. The feed control system includes: A first feeding device includes a discharge end, a fixed wheel group, a movable wheel group, and a controller. The fixed wheel group and the movable wheel group clamp and transfer the material belt to the discharge end. The controller corresponds to the setting of the active wheel group; A second feeding device installed inside the three-dimensional printer; and A feed sensor corresponding to the configuration of the second feed device, the feed sensor is used to sense that the second feed device clamps the tape to generate a release signal; Wherein, after receiving the release signal, the controller drives the movable wheel set away from the fixed wheel set and releases the material belt. The feeding control system of the three-dimensional printer according to claim 1, wherein the first feeding device further includes a main frame, the fixed wheel set includes a driving wheel mounted on the main frame, and the movable wheel The set includes a movable frame pivotally connected to the main frame body and a driven wheel installed on the movable frame and arranged corresponding to the driving wheel. The feed control system of a three-dimensional printer according to claim 2, wherein a toothed portion is provided on the bottom of the movable frame, the controller includes a motor and a worm that rotates with the motor, and the movable frame passes through the tooth The groove is screwed and driven with the worm to drive the driven wheel to approach the driving wheel to clamp and transfer the material belt, or the driven wheel to move away from the driving wheel to release the material belt. The feed control system of a three-dimensional printer according to claim 3, wherein after the motor receives the release signal, it drives the worm to rotate and drives the movable frame away from the drive wheel, and the drive wheel stops after receiving the release signal Running. The feeding control system of a three-dimensional printer according to claim 2, wherein the movable frame protrudes with a protruding piece, the controller includes a motor, a cam and a return spring, and the cam rotates with the motor and corresponds to One side of the protruding piece is provided. The return spring is sandwiched between the main frame and the other side of the protruding piece. The motor drives the cam to press or release the protruding piece, thereby driving the driven wheel to approach the driving wheel to clamp The belt is continuously conveyed, or the driven wheel is away from the driving wheel to release the belt. The feed control system of a three-dimensional printer according to claim 5, wherein after the motor receives the release signal, it drives the cam to release the protrusion, so that the return spring pushes the movable frame away from the driving wheel, and The driving wheel stops running after receiving the release signal. According to claim 3 or 4, the feeding control system of the three-dimensional printer, wherein the discharging end is formed on the main frame and is set corresponding to the rotation direction of the driving wheel. The feeding control system of the three-dimensional printer according to claim 7, wherein the first feeding device further includes two auxiliary rollers installed on the main frame, and the two auxiliary rollers are arranged at the discharge end and the drive The belt is clamped between the wheels. The feed control system of the three-dimensional printer according to claim 1, which further includes a guide tube connected between the discharge end and the second feeding device, and the guide tube is used for The material belt is guided to be conveyed from the discharge end to the second feeding device. The feeding control system of the three-dimensional printer according to claim 9, wherein the number of the material belt and the first feeding device are plural respectively, and each said material belt is set corresponding to each of the first feeding devices, and the guiding material One end of the pipe is provided with a main pipe and the other end is extended with a plurality of shunt pipes communicating with the main pipe. The main pipe is connected to the second feeding device, and each shunt pipe is connected to each discharge end. The feeding control system of a three-dimensional printer according to claim 10, which further includes a computer and a plurality of replenishing sensors, the computer is electrically connected to each of the first feeding devices, and each of the replenishing sensors Corresponding to the configuration of each of the first feeding devices, each of the replenishment sensors is used to sense that the material belt separates from the discharge end to generate a replenishment signal, and the computer receives the one of the first feeding devices After the replenishment signal, the fixed wheel set and the movable wheel set of the other first feeding device are driven to clamp and transfer the material belt to the shunt pipe. The feeding control system of the three-dimensional printer according to claim 1, further comprising a material box, the material box is arranged on one side of the three-dimensional printer, and the first feeding device is accommodated in the material box. The feeding control system of the three-dimensional printer according to claim 12, which further includes a reel, the reel is accommodated in the feed box and is arranged on one side of the first feeding device, and the material belt Wound on the reel. A feed control method for a three-dimensional printer, the steps of which include: a) Provide a first feeding device, the first feeding device includes a discharge end and a drive wheel, the drive wheel drives and conveys a material belt; b) providing a second feeding device which is installed inside the three-dimensional printer to drive and convey the material belt when it enters the three-dimensional printer; c) enabling the first feeding device to drive and transport the material belt to the three-dimensional printer through the discharge end; and d) When the material belt enters the three-dimensional printer, the second feeding device is controlled to drive and convey the material belt, and the transmission of the material belt by the first feeding device is stopped. The feeding control method of the three-dimensional printer according to claim 14, wherein in step c, a guide tube is further provided, and the guide tube is connected between the discharge end and the second feeding device, and The material belt is guided by the material guide tube to be conveyed from the discharge end to the second feeding device. The feeding control method of a three-dimensional printer according to claim 14, wherein in step d, a feeding sensor is further provided, and the feeding sensor corresponds to the configuration of the second feeding device to sense the The drive of the second feeding device transmits the tape and generates a release signal; and a controller is provided corresponding to the setting of the first feeding device, and the controller stops the first feeding device after receiving the release signal Conveyance of the material belt. The feeding control method of a three-dimensional printer according to claim 14, which further includes providing a fixed wheel set and a movable wheel set, wherein the driving wheel is arranged on the fixed wheel set and controlling the movable wheel set and the The fixed wheel sets are separated to release the material belt and make the driving wheel stop the conveying of the material belt by the first feeding device. The feeding control method of the three-dimensional printer according to claim 15, wherein the number of the material belt and the first feeding device is plural, and each of the material belts is set corresponding to each of the first feeding devices, and One end of the guide tube is provided with a main pipe and the other end is extended with a plurality of shunt pipes communicating with the main pipe. The main pipe is connected to the second feeding device, and each shunt pipe is connected to each discharge end. The feeding control method of the three-dimensional printer according to claim 18, wherein a plurality of feeding sensors are further provided, and each feeding sensor corresponds to the configuration of each first feeding device, and each feeding device is configured to be The material sensor senses that the material belt is separated from the discharge end to generate a replenishment signal, and causes the other first feeding device to transfer the material belt to the main tube through the corresponding branch pipe.

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