TW201917027A - Print protection method and three-dimensional printing apparatus - Google Patents

Abstract

A print protection method adapting to a three-dimensional printing apparatus is provided. The print protection method includes following step: when a system voltage reduces form a normal voltage to a first threshold voltage, and lower than the first threshold voltage, generating a trigging signal to a control device by the trigger circuit; recording a position data of a current position of a print head to a storage device by the control device according to the trigging signal after the system voltage is lowered than the first threshold voltage; and completely shutting down a peripheral device and the print head by the control device according to the trigging signal after the system voltage is lowered than the second threshold voltage, so that the control device is continuously operated by remaining power after the system voltage is lowered than the second threshold voltage. In addition, the above three-dimensional printing device is also provided.

Description

Print protection method and three-dimensional printing device

The present invention relates to a printing technique, and more particularly to a printing protection method and a three-dimensional printing apparatus.

With the advancement of Computer-Aided Manufacturing (CAM), the manufacturing industry has developed a three-dimensional printing technology that can quickly create the original design concept. The three-dimensional printing technology is actually a series of rapid prototyping (RP) technology. The basic principle is that it is fabricated on the printing platform. It is printed by the rapid prototype in the XY plane via scanning. The plurality of sliced objects are sequentially layered on the platform to stack the sliced objects to form a three-dimensional object.

In general, in the process of performing a printing operation by the three-dimensional printing device, if a power failure (mains power failure or artificial stop) occurs suddenly, the three-dimensional printing device will stop operating. However, since the internal circuit components of the general three-dimensional printing device do not immediately stop operating after the power is turned off, the internal control circuit of the three-dimensional printing device and the internal circuit such as the motor device are still utilized in the three-dimensional printing device after the power is turned off. The remaining battery power continues to work for a while. That is to say, the position data of the printing head marked by the general three-dimensional printing device after the power failure may have an error with the final stop position of the printing head, so that the stereo printing device cannot be correctly connected after the power-on state. The previous printing operation and the printing of the three-dimensional object that continues to be printed produces a printing deviation. According to this, when the three-dimensional printing device suddenly loses power, how to make the three-dimensional printing device correctly record the position of the printing head, so that after the power-on state, the three-dimensional printing device can correctly follow the previous printing Operation is one of the most important issues at present.

The invention provides a printing protection method and a three-dimensional printing device, which can stop the operation of all peripheral devices when the three-dimensional printing device suddenly loses power, so that the control device can continue to operate according to sufficient surplus power, and the control device The position of the print head is pre-recorded so that the three-dimensional printing device can correctly follow the previous printing operation after the power is restored.

A print protection method of the present invention is suitable for a three-dimensional printing apparatus. The three-dimensional printing device includes a trigger circuit, a control device, a peripheral device, a print head, and a storage device. The printing protection method includes: when the system voltage of the three-dimensional printing device drops from a normal voltage to a first threshold voltage, and is lower than the first threshold voltage, the trigger circuit generates a trigger signal to the a control device; by the control device, after the system voltage is lower than the first threshold voltage, recording position information of a current position of the print head according to the trigger signal to the storage device; Stopping, by the control device, the operation of the peripheral device and the print head after the system voltage is lower than the second threshold voltage according to the trigger signal, so that the control device is low in the system voltage After the second threshold voltage, the remaining power continues to operate, wherein the second threshold voltage is lower than the first threshold voltage.

A three-dimensional printing apparatus of the present invention includes a control device, a trigger circuit, a peripheral device, a print head, and a storage device. The trigger circuit is coupled to the control device. The trigger circuit generates a trigger signal to the control device when the system voltage drops from the normal voltage to the first threshold voltage and is lower than the first threshold voltage. The peripheral device is coupled to the control device. The print head is coupled to the control device. The storage device is coupled to the control device. The control device records the location data of the current position of the print head to the storage device after the system voltage is lower than the first threshold voltage according to the trigger signal. The control device completely stops the operation of the peripheral device and the print head after the system voltage drops to the second threshold voltage according to the trigger signal, so that the control device is lower than the system voltage The second threshold voltage is then continuously operated by the remaining power. The second threshold voltage is lower than the first threshold voltage.

Based on the above, the printing protection method and the three-dimensional printing apparatus of the present invention can correctly determine whether the three-dimensional printing apparatus is in a power-off state during the execution of the three-dimensional printing operation, and can stop the operation of all the peripheral devices to control The device can continue to operate with sufficient remaining power to effectively record the final position of the print head. Therefore, when the three-dimensional printing device is powered back, the three-dimensional printing device can correctly perform the three-dimensional printing operation.

The above described features and advantages of the invention will be apparent from the following description.

In order to make the content of the present invention easier to understand, the following specific embodiments are examples of the invention that can be implemented. In addition, wherever possible, the same elements, components, and steps in the drawings and embodiments are used to represent the same or similar components.

1 is a block diagram of a three-dimensional printing apparatus according to an embodiment of the present invention. Referring to FIG. 1, the three-dimensional printing apparatus 100 includes a control device 110, a trigger circuit 120, a peripheral device 130, a print head 140, and a storage device 150. The control device 110 is coupled to the contact circuit 120, the peripheral device 130, the print head 140, and the storage device 150. The three-dimensional printing apparatus 100 is adapted to perform a three-dimensional printing operation. In this embodiment, the control device 110 is configured to control the print head 140 and the peripheral device 130 to perform a three-dimensional printing operation. The peripheral device 130 can include, for example, a motor device, a heating device, a fan device, or a laser device, and the like, and the three-dimensional printing device 100 can also include, for example, other components for performing a three-dimensional printing operation, such as a printing platform, a supply line, or The linkage mechanism of the print head, etc., and the related components can obtain sufficient teachings, suggestions, and implementation manners according to the general knowledge in the technical field, and thus will not be described.

In this embodiment, the three-dimensional printing operation means that the control device 110 controls the moving path of the printing head 140 according to the plurality of slice data of the three-dimensional model, and the printing print head 140 is printed on the bearing surface of the printing platform. At least all layers of objects. The three-dimensional printing apparatus 100 can sequentially print a plurality of layered articles to form the layered objects to form a three-dimensional object on the bearing surface of the printing platform. In this embodiment, the slice data may be, for example, a two-dimensional image file and includes a plurality of location data, wherein the location data may include moving a printhead related parameter, such as a G-code. In the present embodiment, the control device 110 controls the print head 140 according to the position data in the slice data to move the print head 140 to the corresponding position and perform the feeding operation.

In this embodiment, the control device 110 may include a processing chip, or is, for example, a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor (microprocessor), digital signal Processor (Digital Signal Processor, DSP), programmable controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD), other similar processing circuits or these devices The combination.

In this embodiment, the storage device 150 can be, for example, an Electronically-Erasable Programmable Read-Only Memory (EEPROM), an Embedded Multi Media Card (eMMC), Dynamic Random Access Memory (DRAM), Flash Memory, Non-Volatile Random Access Memory (NVRAM), and the like. In this embodiment, the storage device 150 can be used to store the location data and parameters described in the embodiments of the present invention, and can further store a plurality of computing, processing, or computing modules to provide the control device 110 to read and execute. The control device 110 can implement the print protection operations described in the various embodiments of the present invention.

2 is a schematic diagram of a three-dimensional printing apparatus of the embodiment of FIG. 1 of the present invention. Referring to FIG. 1 and FIG. 2, the control device 110 of the three-dimensional printing apparatus 100 can control the printing head 140 to perform a printing operation on the loading surface S1 of the printing platform 160 to print the three-dimensional object 20 in the printing range PR. . The riding surface S1 of the printing platform 160 is a plane (horizontal plane) formed by the first direction P1 and the second direction P2, and the printing head 140 may face the first direction P1, the second direction P2, or the third direction P3 (vertical Direction) movement, the invention is not limited. The first direction P1, the second direction P2, and the third direction P3 are perpendicular to each other.

In the present embodiment, the three-dimensional printing apparatus 100 has a print protection mechanism. When the three-dimensional printing apparatus 100 performs the printing operation, if the power-off situation suddenly occurs, the control device 110 may pre-record the position data of the printing head 140 when the power-off condition occurs. Therefore, when the three-dimensional printing apparatus 100 is powered back, the print head 140 can be correctly moved to the position at which the power-off condition occurs to properly follow the printing operation. Moreover, in an embodiment, when the three-dimensional printing apparatus 100 performs the printing operation, if the power-off condition occurs, the control device 110 may simultaneously stop the feeding operation of the printing head 140, or the printing head 140 Moving outside the print range PR to effectively protect the three-dimensional object 20 and reduce printing errors.

FIG. 3 is a schematic diagram of a print protection method according to an embodiment of the invention. Referring to FIGS. 1 through 3, the print protection method of FIG. 3 is applicable to the three-dimensional printing apparatus 100 of the embodiment of FIGS. 1 and 2. In this embodiment, the print protection mechanism of the three-dimensional printing apparatus 100 may, for example, perform the step flow of FIG. In step S310, the three-dimensional printing apparatus 100 performs a three-dimensional printing operation. In step S320, the control device 110 determines whether the trigger circuit 120 generates a trigger signal. If not, the control device 110 determines that the power supply of the three-dimensional printing apparatus 100 is normal, and performs step S310 to continue the stereoscopic printing operation. If so, the control device 110 determines that the three-dimensional printing apparatus 100 is powered off, and performs step S330.

In step S330, before the power of the three-dimensional printing apparatus 100 is exhausted, the control device 110 may stop (or disable) the peripheral device 130 through the switching element or the switching circuit to slow down the power decay speed of the three-dimensional printing apparatus 100. In the present embodiment, the peripheral device 130 can be, for example, a motor device that consumes a relatively high energy, a heating device, a fan device, or a laser device. In step S340, the control device 110 records the position data (G-code) of the current position of the print head 140 to the storage device 150. That is, when the three-dimensional printing apparatus 100 is powered off, the three-dimensional printing apparatus 100 of the present embodiment can effectively retain the remaining power to the control device 110 to record the position of the printing head 140, so that the three-dimensional printing apparatus 100 After the power is restored, the stereo printing operation can be performed correctly.

In step S350, the control device 110 may determine whether the G code recorded in the storage device 150 conforms to the current position of the print head 140. If not, the control device 110 re-executes step S340 to re-record the position data of the current position of the print head 140 to the storage device 150. If so, the control device 150 executes step S360. In step S360, the control device 150 moves the print head 140 out of the print range PR to prevent the excess print material of the print head 140 from accumulating on the solid object 20. That is, when the three-dimensional printing apparatus 100 is powered off, the three-dimensional printing apparatus 100 of the present embodiment can prevent the printing head 140 from being printed to print in addition to the position of the printing head 140. Outside the range PR to avoid printing errors and reduce printing errors in printed objects.

4 is a circuit diagram of a trigger circuit in accordance with an embodiment of the present invention. Referring to FIG. 4, the trigger circuit of the embodiments of the present invention may be, for example, the trigger circuit 420 shown in FIG. 4, but FIG. 4 is only used to illustrate an implementation manner of the trigger circuit of the present invention, and the present invention does not Limited. In this embodiment, the trigger circuit 420 can include two switching transistors 421, 422, resistors R1 R R4, and a sense diode E1. The switching transistors 421, 422 are, for example, Metal-Oxide-Semiconductor Field-Effect (NMOS) or Bipolar Junction Transistor (BJT). The switching transistor 421 is coupled to the switching transistor 422, and the voltage sources VDD, VDD' are permeable to the resistors R1 R R4 and the Zener diode E1 for providing a voltage division to the switching transistors 421, 422.

In the present embodiment, the voltage source VDD can be, for example, the system voltage of the stereolithography device, and the voltage source VDD' can be, for example, the operating voltage of the control device or the storage device. When the system voltage of the three-dimensional printing device is abnormal and starts to attenuate, and is lower than the preset threshold voltage, the voltage output terminal Vout of the switching transistor 421 can output a trigger signal to the control device. That is to say, the control device of each embodiment of the present invention can determine whether the stereo printing device is powered off according to whether the trigger signal generated by the trigger circuit 420 is received. However, the detailed operation modes and component parameters of the switching transistors 421 and 422 and the resistors R1 to R4 and the Inductor diode E1 of the present embodiment are sufficient teaching, suggestion, and implementation for the personnel in the circuit field according to the general knowledge. Explain, so I won't go into details.

FIG. 5 is a schematic diagram showing changes in system voltage and operating voltage according to an embodiment of the invention. Referring to Figures 1, 2 and 5, the horizontal axis of Figure 5 is time (T) and the vertical axis is voltage (V). In the present embodiment, when the three-dimensional printing apparatus 100 performs a three-dimensional printing operation, the normal voltage of the system voltage 501 of the three-dimensional printing apparatus 100 may be, for example, 12 V (volts), and the operating voltage of the control device 110 and the storage device 150. The normal voltage of 502 can be, for example, 3.3V (first voltage). In the present embodiment, when the three-dimensional printing apparatus 100 is powered off, the system voltage 501 starts to decay at the time point t1, and when the system voltage 501 is attenuated to the first threshold voltage, the trigger circuit 120 generates a trigger at the time point t2. Signal, where the first threshold voltage is 10V. That is, in order to avoid a misjudgment of the control device 110, the three-dimensional printing apparatus 100 of the present invention can be designed such that the trigger circuit 120 generates a trigger signal when the system voltage 501 drops to 10V.

In the present embodiment, at time t2, the operating voltage 502 of the control device 110 and the storage device 150 has not begun to decay. The control device 110 stops the peripheral device 130 in accordance with the trigger signal and stops the printing operation. The control device 110 records the position data of the current position of the print head 140 to the storage device 150. In the present embodiment, the minimum operating voltage of the control device 110 and the storage device 150 is, for example, 2.8 V (second voltage). That is, if the voltage received by the control device 110 and the storage device 150 is lower than the minimum operating voltage, the control device 110 and the storage device 150 cannot perform the recording operation. Therefore, during the period from time t2 to time t4, the control device 110 records the position data of the print head 140 to the storage device 150. In the present embodiment, the period from the time point t2 to t4 means that the system voltage 501 is lower than the first threshold voltage (10V), and the operating voltage 502 of the storage device 150 is lowered from the normal voltage (3.3V) to the lowest operating voltage. Period of (2.8V). Also, in an embodiment, the length of time of the period from time point t2 to t4 may be, for example, 20 ms (milliseconds).

In the present embodiment, the operating voltage 502 of the control device 110 and the storage device 150 begins to decay at time point t3. Therefore, during the period from time t2 to time t3, the control device 110 stops the peripheral device 130 having a higher energy consumption to reduce the decay speed of the remaining power of the three-dimensional printing apparatus 100. In the present embodiment, the period from the time point t2 to t3 refers to a period during which the system voltage 501 is lowered from the first threshold voltage (10 V) to the second threshold voltage (8 V).

In an embodiment, during the period from time t2 to time t4, the control device 110 may also check whether the location data of the print head 140 stored in the storage device 150 is correct. If the control device 110 determines that the position data does not conform to the current position of the print head 140 (the print head has not stopped moving), the control device 110 re-records the position data of the current position of the print head 140 to the storage device 150. Moreover, in an embodiment, during the period from time t2 to time t3, the control device 110 may also stop the feeding operation of the printing head 140, and calculate the remaining power of the three-dimensional printing apparatus 100 and the print head 140 leaves the column. The shortest path (or path) of the printed range. That is, the control device 110 stops the peripheral device 130, but does not completely stop the print head 140. Therefore, the control device 110 can determine whether it is sufficient to drive the print head 140 to move outside the printing range PR during the period from the time point t2 to t3 depending on the remaining power amount and the shortest path.

That is, if the remaining power is sufficient, the control device 110 drives the print head 140 to move outside the print range PR. If the remaining power is insufficient, the control device 110 drives the print head 140 to perform a wire drawing operation to prevent the excess wire in the print head 140 from being erroneously printed on the three-dimensional object 20 or redundant in the print head 140. The wire is dropped onto the three-dimensional object 20. More specifically, the control device 110 may calculate the distance that the print head 140 is closest to the PR boundary of the printing range in the first direction P1 (for example, the X axis) or the second direction P2 (for example, the Y axis), and according to the calculation result Decide on a shortest path. The shortest path is, for example, toward the second direction P2. Accordingly, control device 110 can provide a minimum enable voltage to a portion of the drive components of the motor assembly to drive printhead 140 away from print range PR (single-axis movement) in a second direction P2. Accordingly, after the three-dimensional printing apparatus 100 is powered back, the control device 110 can read the location data stored in the storage device 150 and drive the print head 140 to correctly return to the previous printing position according to the location data.

6 is a flow chart of a print protection method according to another embodiment of the present invention. Referring to FIG. 1 and FIG. 6, the printing protection method of this embodiment can be applied to the three-dimensional printing apparatus 100 of the embodiment of FIG. 1. In step S610, when the system voltage of the three-dimensional printing apparatus 100 drops from the normal voltage to the first threshold voltage and is lower than the first threshold voltage, the trigger circuit 120 generates a trigger signal to the control device 110. In step S620, the control device 110 records the position data of the current position of the print head 140 to the storage device 150 after the system voltage is lower than the first threshold voltage according to the trigger signal. In step S630, the control device 110 completely stops the operation of the peripheral device 130 and the print head 140 after the system voltage is lower than the second threshold voltage according to the trigger signal, so that the control device 110 borrows after the system voltage is lower than the second threshold voltage. The remaining power continues to operate, wherein the second threshold voltage is lower than the first threshold voltage. Therefore, when the three-dimensional printing apparatus 100 suddenly experiences a power outage, the control device 110 can stop the operation of all the peripheral devices so that the control device can continue to operate according to sufficient remaining power to record the print head 140 in advance and correctly. The final position is such that the three-dimensional printing apparatus 100 can correctly follow the previous printing operation after the power is restored.

In addition, the related implementation details and related device features of the three-dimensional printing apparatus 100 of the present embodiment can be sufficiently taught, suggested, and implemented in the above-described embodiments of FIG. 1 to FIG.

In summary, the printing protection method and the three-dimensional printing device of the present invention can effectively judge whether the three-dimensional printing device is powered off by the trigger circuit, and stop the operation of all peripheral devices, so that the control device can be based on Sufficient residual power continues to operate, and the final position of the print head after power-off is correctly recorded so that the stereo printing device can be successfully connected to the previous printing operation after the power is restored. Moreover, the three-dimensional printing device of the present invention can also stop the relevant internal circuit with high energy consumption in the three-dimensional printing device according to the trigger signal provided by the trigger circuit, so as to reduce the attenuation speed of the remaining power of the three-dimensional printing device. Therefore, the three-dimensional printing apparatus of the present invention can have ample time to record the final position of the printing head after power-off. In addition, the three-dimensional printing apparatus of the present invention can further move the printing head to the outside of the printing range after the power is turned off, or operate the printing head to perform the wire drawing operation to effectively protect the three-dimensional object and reduce the printing error. .

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

20‧‧‧Three-dimensional objects

100‧‧‧Three-dimensional printing equipment

110‧‧‧Control device

120, 420‧‧‧ trigger circuit

130‧‧‧ Peripheral devices

140‧‧‧Print head

150‧‧‧Storage device

160‧‧‧Printing platform

421, 422‧‧‧ Switching components

501‧‧‧ system voltage

502‧‧‧ working voltage

E1‧‧‧Jenner diode

P1‧‧‧ first direction

P2‧‧‧ second direction

P3‧‧‧ third direction

PR‧‧‧Printing range

R1, R2, R3, R4‧‧‧ resistance

S1‧‧‧ riding surface

S310, S320, S330, S340, S350, S360, S610, S620, S630‧‧ steps

T1, t2, t3, t4‧‧‧ time points

VDD, VDD'‧‧‧ voltage source

Vout‧‧‧voltage output

1 is a block diagram of a three-dimensional printing apparatus according to an embodiment of the present invention. 2 is a schematic diagram of a three-dimensional printing apparatus of the embodiment of FIG. 1 of the present invention. FIG. 3 is a schematic diagram of a print protection method according to an embodiment of the invention. 4 is a circuit diagram of a trigger circuit in accordance with an embodiment of the present invention. FIG. 5 is a schematic diagram showing changes in system voltage and operating voltage according to an embodiment of the invention. 6 is a flow chart of a print protection method according to another embodiment of the present invention.

Claims (16)

A printing protection method is applicable to a three-dimensional printing device, and the three-dimensional printing device comprises a trigger circuit, a control device, a peripheral device, a print head and a storage device, and the method comprises: when When a system voltage of the three-dimensional printing device drops from a normal voltage to a first threshold voltage and is lower than the first threshold voltage, a trigger signal is generated by the trigger circuit to the control device; The control device records a position data of a current position of the print head to the storage device after the system voltage is lower than the first threshold voltage according to the trigger signal; and by the control device The trigger signal completely stops operation of the peripheral device and the print head after the system voltage is lower than a second threshold voltage, so that the control device is lower than the second threshold in the system voltage The voltage is then continuously operated by remaining power, wherein the second threshold voltage is lower than the first threshold voltage. The printing protection method of claim 1, wherein the control device stops the peripheral device during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage, However, the print head is not completely stopped. The printing protection method of claim 1, wherein the recording device records the print head after the system voltage is lower than the first threshold voltage according to the trigger signal by the control device The step of the location information of the current location to the storage device includes: determining, by the control device, whether the location data recorded in the storage device conforms to the current location of the printhead, Determining that the location data recorded in the storage device corresponds to a final position of the printhead; and if the location data does not conform to the current location of the printhead, by the control The device re-records the location data of the current location of the printhead to the storage device. The printing protection method of claim 3, wherein the control device starts when the system voltage is lower than the first threshold voltage, and an operating voltage of the storage device is decreased by a first voltage In the period of up to a second voltage, the recording of the final position of the print head is completed. The printing protection method of claim 1, further comprising: stopping, by the control device, during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage Determining a feeding operation of the printing head, and calculating a remaining amount of power of the three-dimensional printing device and a shortest path of the printing head from a printing range; and by the control device according to the remaining power and The shortest path determination is sufficient to drive the printhead to move out of a printout period during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage. The printing protection method of claim 5, further comprising: if the remaining power is sufficient, driving the printing head to move outside the printing range by the control device; If the remaining power is insufficient, the wire pressing operation is performed by the control device driving the printing head. The printing protection method of claim 1, further comprising: after the three-dimensional printing device is powered back, reading, by the control device, the location data stored in the storage device, And driving the print head according to the location data. The printing protection method of claim 1, wherein the peripheral device comprises at least one of a motor device, a heating device, a fan device, and a laser device. A three-dimensional printing device includes: a control device; a trigger circuit coupled to the control device, wherein when a system voltage drops from a normal voltage to a first threshold voltage and is lower than the first threshold voltage The trigger circuit generates a trigger signal to the control device; a peripheral device coupled to the control device; a print head coupled to the control device; and a storage device coupled to the control device, wherein The control device records a position data of a current position of the print head to the storage device after the system voltage is lower than the first threshold voltage according to the trigger signal, wherein the control device is The trigger signal completely stops the operation of the peripheral device and the print head after the system voltage drops to a second threshold voltage, so that the control device borrows after the system voltage is lower than the second threshold voltage The remaining power continues to operate, wherein the second threshold voltage is lower than the first threshold voltage. The three-dimensional printing apparatus according to claim 9, wherein the control device stops the peripheral device during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage, However, the print head is not completely stopped. The three-dimensional printing apparatus according to claim 9, wherein the control device determines whether the position data recorded in the storage device conforms to the current position of the print head, if If the location data does not conform to the current location of the printhead, the control device re-records the location data of the current location of the printhead to the storage device. 3. The three-dimensional printing apparatus of claim 11, wherein the control device starts when the system voltage is lower than the first threshold voltage, and an operating voltage of the storage device is decreased by a first voltage. In the period of up to a second voltage, the recording of the final position of the print head is completed. The three-dimensional printing apparatus according to claim 9, wherein the control means stops the column during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage a feed operation of the print head, and calculating a remaining charge of the three-dimensional printing device and a shortest path of the print head from a print range, and the control device is based on the remaining power and the shortest path Determining whether it is sufficient to drive the printhead to move out of a printout period during a period in which the system voltage is lowered from the first threshold voltage to the second threshold voltage. The three-dimensional printing apparatus of claim 13, wherein if the remaining power is sufficient, the control device drives the printing head to move outside the printing range, wherein if the remaining power is insufficient And the control device drives the print head to perform a wire drawing operation. The three-dimensional printing apparatus of claim 9, wherein the control device reads the location data stored in the storage device after the stereoscopic printing device is powered back, and according to the The location data drives the printhead. The three-dimensional printing apparatus of claim 9, wherein the peripheral device comprises at least one of a motor device, a heating device, a fan device, and a laser device.