CN112606396B - Automatic power-off holding device for printing platform and 3D printing equipment - Google Patents

Automatic power-off holding device for printing platform and 3D printing equipment Download PDF

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Publication number
CN112606396B
CN112606396B CN202011378003.0A CN202011378003A CN112606396B CN 112606396 B CN112606396 B CN 112606396B CN 202011378003 A CN202011378003 A CN 202011378003A CN 112606396 B CN112606396 B CN 112606396B
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Prior art keywords
printing platform
printing
power
controller
motor
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CN202011378003.0A
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CN112606396A (en
Inventor
刘辉林
唐京科
陈春
敖丹军
雷丛金
刘根伸
区志瑜
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Shenzhen Chuangxiang 3D Technology Co Ltd
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Shenzhen Chuangxiang 3D Technology Co Ltd
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Priority to CN202011378003.0A priority Critical patent/CN112606396B/en
Priority to PCT/CN2020/141113 priority patent/WO2022110486A1/en
Publication of CN112606396A publication Critical patent/CN112606396A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/245—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The invention discloses a printing platform power-off automatic holding device and 3D printing equipment, and relates to the technical field of 3D printing, wherein the device is applied to the 3D printing equipment, the 3D printing equipment comprises a printing platform and a stepping motor, the stepping motor is used for controlling the movement of the printing platform, the device comprises a controller and a motor control board, a switch device is arranged on the motor control board, the switch device is connected with a phase wiring port of the stepping motor, the controller is electrically connected with the motor control board, and the controller is used for controlling the on-off of the switch device on the motor control board so as to control the phase transition of the stepping motor. The invention realizes that the printing platform automatically keeps the current position after power failure in a simple mode, has more flexible operation, improves the printing effect after breakpoint printing and ensures the smoothness of the operation of the printing platform.

Description

Automatic power-off holding device for printing platform and 3D printing equipment
Technical Field
The invention relates to the technical field of 3D printing, in particular to a printing platform power-off automatic holding device and 3D printing equipment.
Background
3D printing is a technique for building objects by layer-by-layer printing using bondable materials such as powdered metals or plastics based on digital model files. On the 3D printing apparatus that is equipped with large size print platform, if the 3D printer cuts off the power supply suddenly at the during operation, print platform falls because of receiving gravity automatically. If the 3D printing equipment is connected with the power-off continuous printing function module, the printing platform automatically falls down after the power-off, so that the printing platform cannot be normally connected to the last printing position after the power-off, and the power-off continuous printing function fails.
Most of methods used in the current industry use mechanical methods to solve the problem that a printing platform automatically falls off after power failure, but the use of the mechanical methods can cause poor printing effect and influence the smoothness of the operation of the printing platform.
Therefore, it is desirable to provide a power-off automatic retaining device for a printing platform to solve the above-mentioned drawbacks.
Disclosure of Invention
The invention provides a printing platform power-off automatic holding device and 3D printing equipment, and aims to solve the problems that the printing effect is poor and the like due to the existing mechanical method.
In order to solve the above technical problem, the present invention provides an automatic power-off maintaining device for a printing platform, which is applied to a 3D printing apparatus, wherein the 3D printing apparatus includes the printing platform and a stepping motor, the stepping motor is used to control the movement of the printing platform, and the automatic power-off maintaining device includes: the device comprises a controller and a motor control panel, wherein a switch device is arranged on the motor control panel and connected with a phase wiring port of the stepping motor, the controller is electrically connected with the motor control panel, and the controller controls the motor control panel to switch between an operating state and an inoperative state so as to control the on-off of the switch device on the motor control panel and control the phase transition of the stepping motor. The automatic printing platform power-off maintaining device provided by the embodiment replaces the existing mechanical method for processing the position of the printing platform after power-off, realizes the automatic maintenance of the existing position of the printing platform after power-off in a simple mode, is more flexible to operate, improves the printing effect after breakpoint printing, and ensures the smoothness of the operation of the printing platform.
In a further scheme, the switch device is a relay, the relay is provided with two pairs of connecting ends, the stepping motor is provided with two groups of phase wiring ports, and the two pairs of phase wiring ports are respectively and electrically connected with the two groups of connecting ends; when the two pairs of connecting ends are closed, the two groups of phase wiring ports are closed, and when the two pairs of connecting ends are disconnected, the two groups of phase wiring ports are disconnected. The two groups of phase connection ports are controlled to be opened/closed through the relays, and the control method is simpler.
In a further scheme, the controller is electrically connected with an interface of a motor control board through a controller interface, when the controller controls the motor control board to work, two pairs of connecting ends are closed, and simultaneously two groups of phase wiring ports are closed; and the controller controls the two pairs of connecting ends to be disconnected when the motor control panel does not work, and simultaneously the two groups of phase wiring ports are disconnected. Based on the design of the structure, the controller controls the motor control panel to work or not work so as to control the two groups of phase wiring ports to be opened or closed, and the structure design is simpler and more convenient to control.
In a further scheme, each pair of the connecting ends is connected with a first resistor and a first capacitor in series, and when the two pairs of the connecting ends are closed, each pair of the connecting ends forms a loop with the first resistor and the first capacitor. Based on the design of this structure, when every couple of link is closed, first resistance and first electric capacity form the effect in order to realize increasing the load for step motor, avoid burning out step motor in the return circuit.
In a further scheme, the relay comprises two voltage input ends, wherein the positive voltage input end is electrically connected with a power supply voltage, the negative voltage input end is electrically connected with an MOS (metal oxide semiconductor) tube, the MOS tube is connected with a control circuit arranged on the motor control panel, and the control circuit controls the on-off of the MOS tube according to an enabling signal of the controller. Based on the design of this structure, structural design is simpler.
In a further aspect, the negative voltage input terminal is electrically connected to a working state indication module. The working state indicating module is convenient for a user to observe the working state of the motor control panel.
In a further scheme, the working state indicating module comprises a second capacitor, a light emitting diode and a second resistor, one end of the second capacitor is electrically connected with the negative voltage input end, and the other end of the second capacitor is electrically connected to the power supply voltage; the cathode of the light emitting diode is connected with the negative voltage input end, and the anode of the light emitting diode is connected with one end of the second resistor; the other end of the second resistor is connected to the supply voltage.
In a further scheme, the switch device comprises two MOS tubes, the stepping motor is provided with two groups of phase wiring ports, and the two phase wiring ports are respectively connected with the two pairs of MOS tubes; when the two MOS tubes are switched on, the two groups of phase wiring ports are closed, and when the two MOS tubes are switched off, the two groups of phase wiring ports are switched off. The two groups of phase connection ports are controlled to be opened/closed by replacing the relay with the two MOS tubes, so that a user can select according to an actual use scene, and the application scene is enlarged.
In a further scheme, the controller is a single chip microcomputer. Based on the design of this structure, reduce the cost of device, and control is more nimble.
The invention also provides 3D printing equipment which comprises a printing platform and the automatic printing platform power-off holding device, wherein the automatic printing platform power-off holding device is connected with the stepping motor of the printing platform to control the printing platform to automatically hold in a power-off state. Based on the design of outage automatic retaining device for 3D printing apparatus's print platform keeps original position after the outage, improves and prints the effect.
Compared with the prior art, according to the automatic printing platform power-off keeping device and the 3D printing equipment, the automatic printing platform power-off keeping device controls the change of the phase of the stepping motor during power-off through the switching device by connecting the stepping motor with the motor control board provided with the switching device, so that the printing platform is controlled to automatically keep the current position after power-off. The automatic printing platform power-off maintaining device provided by the invention replaces the existing mechanical method for treating the position falling of the printing platform after power-off, realizes the automatic maintenance of the existing position of the printing platform after power-off in a simple manner, is more flexible to operate, improves the printing effect after breakpoint printing, and ensures the smoothness of the operation of the printing platform.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a block schematic diagram of a 3D printing apparatus of the present invention;
fig. 2 is a schematic circuit structure diagram of a motor control board in the 3D printing apparatus of the present invention;
FIG. 3 is an electrical schematic diagram of a stepper motor in the 3D printing apparatus of the present invention;
fig. 4 is a schematic circuit structure diagram of a control circuit of a motor control board and a MOS transistor in the 3D printing apparatus according to the present invention;
fig. 5 is a schematic structural diagram of a controller interface in the automatic power-off holding device for a printing platform according to the present invention.
The reference symbols in the figures are as follows:
100-3D printing device; 10-a printing platform; 20-a stepper motor;
30-automatic power-off holding device for printing platform; 31-a controller; 32-motor control board;
33-a switching device; 34-a relay; 35-a working state indicating module; 36-MOS tube;
37-a control circuit; 371-low voltage control circuit; 372-a high voltage control circuit; 38-triode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The directional terms used in the present invention, such as "up" and "down", are used with reference to the orientation of the appended drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding and is in no way limiting. Further, in the drawings, structures that are similar or identical are denoted by the same reference numerals.
As shown in fig. 1, the present embodiment provides a 3D printing apparatus 100, the 3D printing apparatus 100 includes a printing platform 10, a stepping motor 20, and a printing platform power-off automatic holding device 30, the stepping motor 20 is used to control the movement of the printing platform 10, and the printing platform power-off automatic holding device 30 is connected to the stepping motor 20 of the printing platform 10 to control the printing platform 10 to perform power-off automatic holding.
Referring to fig. 1, a schematic structural diagram of a printing platform power-off automatic holding device 30 according to the present embodiment is shown, in which the printing platform power-off automatic holding device 30 includes a controller 31 and a motor control board 32, a switch device 33 is disposed on the motor control board 32, the switch device 33 is connected to a phase connection port of the stepping motor 20, the controller 31 is electrically connected to the motor control board 32, and the controller 31 controls the switching between an operating state and a non-operating state of the motor control board 32 to control the on/off of the switch device 33 on the motor control board 32, so as to control the phase transition of the stepping motor 20. When the 3D printing apparatus 100 is in the power-on state and normally works, the motor control board 32 is in the non-operating state, when the 3D printing apparatus 100 is suddenly powered off, the motor control board 32 is in the operating state, the switching device 33 arranged on the motor control board 32 is closed to control the phase transition of the stepping motor 20, the rotor of the stepping motor 20 continuously rotates along the original direction due to inertia to generate induced electromotive force, and meanwhile, the rotor of the stepping motor 20 tends to rotate in the reverse direction under the action of the generated induced electromotive force, so that the resistance of the stepping motor 20 is increased, and the stepping motor 20 is self-locked to further control the printing platform 10 to automatically keep the existing position after being powered off.
This embodiment provides a print platform outage automatic retaining device, through connect a motor control panel that is equipped with switching device on step motor, through the change of step motor phase place when switching device control outage to control print platform outage back automatic stay current position. The automatic printing platform power-off maintaining device provided by the embodiment replaces the existing mechanical method for processing the position of the printing platform after power-off, realizes the automatic maintenance of the existing position of the printing platform after power-off in a simple mode, is more flexible to operate, improves the printing effect after breakpoint printing, and ensures the smoothness of the operation of the printing platform.
As shown in fig. 2 and fig. 3, in this embodiment, the switching device 33 is a relay 34, the relay 34 is provided with two pairs of connection ends, the connection end 3 and the connection end 5 are a pair of connection ends, the connection end 4 and the connection end 6 are another pair of connection ends, the stepping motor 20 is of a two-phase four-wire type, the stepping motor 20 is provided with two sets of phase wiring ports, the phase wiring port a and the phase wiring port C are a set of phase wiring ports, the phase wiring port B and the phase wiring port D are a set of phase wiring ports, two sets of phase wiring ports are electrically connected with two pairs of connection ends respectively, for example, a pair of connection ends formed by the connection end 3 and the connection end 5 is electrically connected with a set of phase wiring ports formed by the phase wiring port a and the phase wiring port C, and a pair of connection ends formed by the connection end 4 and the connection end 6 is electrically connected with a set of phase wiring ports formed by the phase wiring port B and the phase wiring port D. When two pairs of connecting ends are closed, two sets of phase connection ports are closed, and when two pairs of connecting ends are disconnected, two sets of phase connection ports are disconnected. In another embodiment, it is needless to say that other types of stepping motors such as four-phase five-wire stepping motors and four-phase six-wire stepping motors can be adopted, and the phase transition of the stepping motors can be controlled in a manner that two pairs of connecting ends are connected with two groups of phase wiring ports. Based on the design of this structure, the opening and shutting of step motor 20 phase place wiring mouth is controlled through the opening and shutting of relay 34 link to control the transition of step motor 20 phase place, structural design is simpler, the control of being more convenient for.
In this embodiment, the controller 31 is electrically connected to the interface of the motor control board 32 through the controller interface, and when the controller 31 controls the motor control board 32 to operate, the two pairs of connection ends are closed to close the two sets of phase connection ports; when the controller 31 controls the motor control board 32 not to work, the two pairs of connection ends are disconnected so as to disconnect the two groups of phase connection ports.
As shown in fig. 2, in this embodiment, each pair of connection ends is connected in series with a first resistor and a first capacitor, in this embodiment, as shown in fig. 2, the resistor R8 and the resistor R9 are first resistors, the capacitor C2 and the capacitor C3 are first capacitors, when the connection end 3 and the connection end 5 are closed, and the connection end 4 and the connection end 5 are closed, the resistor R8 and the capacitor C2 are communicated to form a loop, and the resistor R9 and the capacitor C3 are communicated to form a loop. Through connecting first resistance and first electric capacity at every pair of link, when every pair link closure, first resistance and first electric capacity form the return circuit in order to realize the effect for step motor increases the load, avoid burning out step motor.
As shown in fig. 2, in the present embodiment, the relay 34 includes two voltage input terminals, wherein the positive voltage input terminal VIN + is electrically connected to a power supply voltage, the voltage value of the power supply voltage is 5V in the present embodiment, and the negative voltage input terminal VIN-is electrically connected to the MOS transistor 36. In the present embodiment, as shown in fig. 4 and 5, the gate of the MOS transistor 36 is connected to the controller 31 through a control circuit 37 provided on the motor control board, specifically, the drain of the MOS transistor 36 is connected to the negative voltage input terminal of the relay 34, the source of the MOS transistor 36 is grounded, the gate of the MOS transistor 36 is connected to the output terminal of the control circuit 37, and the input terminal of the control circuit 37 is connected to the output interface EN _ Z of the controller 31. The control circuit 37 includes a low voltage control circuit 371 and a high voltage control circuit 372 connected to the low voltage control circuit 371, wherein the low voltage control circuit 371 includes a transistor 38 having a voltage amplifying function, when the enable signal of the controller is a low level voltage, the low voltage control circuit 371 is connected to control the switching of the MOS transistor 36, and when the enable signal of the controller is a high level voltage, the high voltage control circuit 372 is connected to control the switching of the MOS transistor 36. The control circuit 37 controls the on/off of the MOS tube 36 under different voltage conditions, and further controls the connection and disconnection of the two pairs of connection ends of the relay 34, so that the operation is simpler. The low-voltage control circuit and the high-voltage control circuit are commonly used control circuits in the field, and the specific structure and principle thereof are well known to those skilled in the art and are not described herein again.
As shown in fig. 2, in the present embodiment, the negative voltage input terminal VIN-is further electrically connected to an operating state indicating module 35. As shown in fig. 2, the working state indicating module 35 includes a second capacitor C1, a light emitting diode D1 and a second resistor R7, one end of the second capacitor C1 is electrically connected to the negative voltage input terminal, the other end is electrically connected to the power supply voltage, a cathode of the light emitting diode D1 is connected to the negative voltage input terminal VIN-, an anode thereof is connected to the second resistor R7, and the other end of the second resistor R7 is connected to the power supply voltage. The working state indicating module 35 provided with the light emitting diode D1 is configured to indicate a working state of the MOS tube 36, where if the MOS tube 36 is in a conducting state, the light emitting diode D1 emits light, and if the MOS tube 36 is in a disconnecting state, the light emitting diode D1 is turned on and turned off. The operating status of the motor control board 32 can be conveniently observed by a user through the operating status indicating module 35.
In another embodiment, the switching device 33 includes two MOS transistors, and the step motor 20 has two sets of phase connection ports, where the two phase connection ports are respectively connected to two pairs of MOS transistors; when the two MOS tubes are switched on, the two groups of phase wiring ports are closed, and when the two MOS tubes are switched off, the two groups of phase wiring ports are switched off.
In this embodiment, the controller 31 is a single chip microcomputer. The working state of the motor control board 32 is controlled by the single chip microcomputer, and the effective control of the phase transition of the stepping motor 20 is realized at a lower cost.
Compared with the prior art, the automatic power-off maintaining device for the printing platform provided by the invention has the advantages that the motor control board provided with the switching device is connected to the stepping motor, and the phase change of the stepping motor is controlled by the switching device during power-off, so that the printing platform is controlled to automatically maintain the current position after power-off. The automatic printing platform power-off maintaining device provided by the invention replaces the existing mechanical method for processing the position falling of the printing platform after power-off, realizes the automatic maintenance of the existing position of the printing platform after power-off in a simple manner, is more flexible to operate, improves the printing effect after breakpoint printing, and ensures the smoothness of the operation of the printing platform.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a printing platform outage automatic holding device, is applied to in the 3D printing apparatus, 3D printing apparatus includes printing platform and step motor, step motor is used for controlling printing platform's motion, printing platform outage automatic holding device connect printing platform the step motor is in order to control printing platform carries out outage automatic holding, its characterized in that:
the device comprises a controller and a motor control panel, wherein a switch device is arranged on the motor control panel and connected with a phase wiring port of the stepping motor, the controller is electrically connected with the motor control panel, and the controller controls the motor control panel to switch between an operating state and a non-operating state so as to control the on-off of the switch device on the motor control panel and control the phase transition of the stepping motor.
2. The printing platform power-off automatic retention device according to claim 1, characterized in that: the switching device is a relay, the relay is provided with two pairs of connecting ends, the stepping motor is provided with two groups of phase wiring ports, and the two groups of phase wiring ports are electrically connected with the two pairs of connecting ends respectively; when the two pairs of connecting ends are closed, the two groups of phase wiring ports are closed, and when the two pairs of connecting ends are disconnected, the two groups of phase wiring ports are disconnected.
3. The platen power-off auto-hold device of claim 2, wherein:
the controller passes through controller interface and motor control panel's interface electric connection, the controller control motor control panel during operation, two pairs the link is closed, and is two sets of simultaneously phase place wiring mouth is closed, the controller control motor control panel is out of work, two pairs the link disconnection, simultaneously two sets of phase place wiring mouth disconnection.
4. The platen power-off auto-hold device of claim 3, wherein: each pair of the connecting ends is connected with a first resistor and a first capacitor in series, and when the two pairs of the connecting ends are closed, each pair of the connecting ends, the first resistor and the first capacitor form a loop.
5. The printing platform power-off automatic retention device according to claim 2, characterized in that: the relay comprises two voltage input ends, wherein the positive voltage input end is electrically connected with a power supply voltage, the negative voltage input end is electrically connected with an MOS (metal oxide semiconductor) tube, the MOS tube is connected with a control circuit arranged on the motor control panel, and the control circuit controls the on-off of the MOS tube according to an enabling signal of the controller.
6. The platen power-off auto-hold device of claim 5, wherein: the negative voltage input end is electrically connected with a working state indicating module.
7. The printing platform power-off automatic retention device according to claim 6, wherein: the working state indicating module comprises a second capacitor, a light emitting diode and a second resistor, wherein one end of the second capacitor is electrically connected with the negative voltage input end, and the other end of the second capacitor is electrically connected to the power supply voltage; the cathode of the light emitting diode is connected with the negative voltage input end, and the anode of the light emitting diode is connected with one end of the second resistor; the other end of the second resistor is connected to the supply voltage.
8. A print platform power-off auto-hold feature according to any one of claims 1 to 7 wherein: the switching device comprises two MOS tubes, the stepping motor is provided with two groups of phase wiring ports, and the two phase wiring ports are respectively connected with the two pairs of MOS tubes; when the two MOS tubes are switched on, the two groups of phase wiring ports are closed, and when the two MOS tubes are switched off, the two groups of phase wiring ports are switched off.
9. A printing platform power off auto-retention mechanism according to any of claims 1 to 7, wherein: the controller is a single chip microcomputer.
10. 3D printing equipment, comprising a printing platform and the printing platform power-off automatic holding device according to any one of claims 1 to 9, wherein the printing platform power-off automatic holding device is connected with a stepping motor of the printing platform to control the printing platform to perform power-off automatic holding.
CN202011378003.0A 2020-11-30 2020-11-30 Automatic power-off holding device for printing platform and 3D printing equipment Active CN112606396B (en)

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CN202011378003.0A CN112606396B (en) 2020-11-30 2020-11-30 Automatic power-off holding device for printing platform and 3D printing equipment
PCT/CN2020/141113 WO2022110486A1 (en) 2020-11-30 2020-12-29 Automatic holding apparatus for powering off of printing platform and 3d printing device

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CN112606396B true CN112606396B (en) 2023-01-10

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