CN117002013A

CN117002013A - Sensing device, 3D printing system and 3D printing control method

Info

Publication number: CN117002013A
Application number: CN202310988326.9A
Authority: CN
Inventors: 李昌宪; 郑尚
Original assignee: Dongguan Puluosen 3d Technology Co ltd
Current assignee: Dongguan Puluosen 3d Technology Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2023-11-07

Abstract

The application relates to the technical field of 3D printing, and discloses a sensing device, a 3D printing system and a 3D printing control method, wherein the sensing device comprises a piezoelectric ceramic plate and a position sensor; wherein the piezoelectric ceramic piece is in contact with a hot bed of the 3D printer; the position sensor is disposed on a nozzle of the 3D printer. According to the application, the position sensor is added on the basis of the piezoelectric ceramic plate, and is used as a precondition for the detection of the piezoelectric ceramic plate, namely the position sensor is required to detect that the nozzle is close to the hot bed first, then the piezoelectric ceramic plate detects that the nozzle collides with the hot bed, so that the vibration detection of the piezoelectric ceramic plate can be finally determined to be accurate, the problem that the piezoelectric ceramic plate is easily influenced by external environment factors is solved, the size of the piezoelectric ceramic plate is not limited any more, the printing size requirement can be increased to meet the sensing requirement, and the piezoelectric ceramic plate is suitable for large-scale popularization and application.

Description

Sensing device, 3D printing system and 3D printing control method

Technical Field

The application relates to the technical field of 3D printing, in particular to a sensing device, a 3D printing system and a 3D printing control method.

Background

The piezoelectric ceramic plate is an electronic sound producing element and comprises two copper circular electrodes and a piezoelectric ceramic dielectric material arranged between the two copper circular electrodes, when an alternating current audio signal is connected to the two copper circular electrodes, the piezoelectric ceramic dielectric material vibrates according to the frequency of the signal, so that sound is produced.

At present, although the piezoelectric ceramic sheet is generally used as a buzzer, a case of using the piezoelectric ceramic sheet as a sensor has appeared in the industry, specifically using the piezoelectric ceramic sheet as a leveling and limiting sensor of a 3D printer, and the 3D printer is particularly FDM (Fused Deposion Modeling, rapid forming by grid-melting deposition). The piezoelectric ceramic plate has very excellent induction effect, sensitivity exceeds that of a common sensor, clutter is small, stability is high, installation is convenient, complex induction under various environments is easy to realize, however, the piezoelectric ceramic plate has very large defects when being used as a sensor, the piezoelectric ceramic plate is extremely sensitive, the larger the size of the piezoelectric ceramic plate is, the higher the sensitivity is, the influence of external environmental factors is very easy to be caused, so that the size of the piezoelectric ceramic plate cannot be increased according to the printing size requirement, otherwise, the condition of false detection is extremely easy to occur.

Accordingly, improvements in the art are needed.

The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure.

Disclosure of Invention

The application provides a sensing device, a 3D printing system and a 3D printing control method, so as to improve detection accuracy.

In order to achieve the above object, the present application provides the following technical solutions:

in a first aspect, the present application provides a sensing device for use in a 3D printer, the device comprising a piezoelectric ceramic sheet 1 and a position sensor 2; wherein,

the piezoelectric ceramic sheet 1 is in contact with a thermal bed 6 of the 3D printer;

the position sensor 2 is arranged on the nozzle 7 of the 3D printer.

Further, in the sensing device, the sensing surface of the position sensor 2 corresponds to the lifting direction of the nozzle 7.

Further, in the sensing device, the position sensor 2 and the piezoelectric ceramic plate 1 are respectively connected with a motherboard of the 3D printer.

Further, in the sensing device, the device further comprises a vibration transmission plate 3;

the piezoelectric ceramic plate 1 is arranged on the vibration transmission plate 3;

the vibration-transmitting plate 3 is in contact with the thermal bed 6.

Further, in the sensing device, the device further comprises a spring 4;

the vibration transmission plate 3 is arranged below the hot bed 6;

one end of the spring 4 is connected with the vibration transmission plate 3, and the other end of the spring 4 is contacted with the hot bed 6.

Further, in the sensing device, the device further comprises a fixed block 5;

one end of the vibration transmission plate 3 is fixed on the fixed block 5, and the other end of the vibration transmission plate 3 is contacted with the hot bed 6 through the springs 4.

In a second aspect, the present application provides a 3D printing system comprising a 3D printer and a sensing device according to any one of claims 1 to 6; wherein,

the 3D printer comprises a hot bed 6, nozzles 7 and a main board;

the piezoelectric ceramic plate 1 in the sensing device is contacted with the hot bed 6, and the position sensor 2 in the sensing device is arranged on the nozzle 7;

the piezoelectric ceramic plate 1 and the position sensor 2 are respectively connected with the main board.

In a third aspect, the present application provides a 3D printing control method applied to the 3D printing system according to the second aspect, wherein the method includes:

in the leveling process, the position sensor descends along with the nozzle, detects whether the position sensor approaches the hot bed, and sends a proximity detection signal to the main board when the position sensor approaches the hot bed;

the piezoelectric ceramic sheet detects whether vibration is received from the nozzle when the nozzle descends and collides with the hot bed or not, and sends a vibration detection signal to the main board when the vibration is received;

and after receiving the proximity detection signal and the vibration detection signal, the main board determines the distance between the nozzle and the hot bed during printing according to the height of the nozzle, and marks the distance as the printing distance.

In a fourth aspect, the present application provides a computer device comprising a memory storing a computer program and a processor implementing the 3D printing control method according to the third aspect described above when executing the computer program.

In a fifth aspect, the present application provides a storage medium containing computer executable instructions, wherein the computer executable instructions are executed by a computer processor to implement the 3D printing control method according to the third aspect.

Compared with the prior art, the application has the following beneficial effects:

according to the sensing device, the 3D printing system and the 3D printing control method, the position sensor is added on the basis of the piezoelectric ceramic plate, and is used as a precondition when the piezoelectric ceramic plate is detected, namely the position sensor is required to detect that the nozzle is close to the hot bed, then the piezoelectric ceramic plate detects that the nozzle collides with the hot bed, so that the vibration detection of the piezoelectric ceramic plate can be finally determined to be accurate, the problem that the piezoelectric ceramic plate is easily influenced by external environmental factors is solved, the size of the piezoelectric ceramic plate is not limited any more, the requirement of the printing size can be increased, the sensing requirement is met, and the sensing device is suitable for large-scale popularization and application.

The application has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, taken in conjunction with the accompanying drawings and the detailed description, which illustrate certain principles of the application.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sensing device according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of a 3D printing system according to a second embodiment of the present application;

fig. 3 is a schematic flow chart of a 3D printing control method according to a third embodiment of the present application;

fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present application.

Reference numerals:

the device comprises a piezoelectric ceramic plate 1, a position sensor 2, a vibration transmission plate 3, a spring 4, a fixed block 5, a hot bed 6 and a nozzle 7.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In addition, as one of ordinary skill in the art can know, with technical development and new scenarios, the technical solution provided by the embodiment of the present application is also applicable to similar technical problems.

In the description of the present application, it is to be understood that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. Furthermore, any terminology used is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present application.

The technical scheme of the application is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

In view of the above-mentioned drawbacks of the existing 3D printing technology, the present inventors have actively studied and innovated based on the fact that the design and manufacture of such products has been performed for many years and in combination with the application of the theory, so as to hope to create a technology capable of solving the drawbacks of the existing technology, so that the 3D printing technology has more practicability. After continuous research and design and repeated sample test and improvement, the application with practical value is finally created.

Referring to fig. 1, an embodiment of the present application provides a sensing device applied to a 3D printer, the device including a piezoelectric ceramic sheet 1 and a position sensor 2; wherein,

the position sensor 2 is arranged on the nozzle 7 of the 3D printer.

It should be noted that, in this embodiment, the position sensor 2 is used to detect whether the nozzle 7 is close to the hot bed 6, and is used as a precondition for detecting the piezoelectric ceramic plate 1, so as to improve the detection accuracy of the piezoelectric ceramic plate 1, that is, the position sensor 2 needs to detect that the nozzle 7 is close to the hot bed 6 first, and the piezoelectric ceramic plate 1 receives vibration immediately, so as to determine that the vibration is generated by the nozzle 7 falling and hitting the hot bed 6, and then it can be finally determined that the nozzle 7 reaches the set position. The position sensor 2 may be, for example, a proximity switch, a piezoelectric sensor, or the like.

In addition, as mentioned above, the piezoelectric ceramic sheet 1 employed in the present embodiment is not used as an electro-acoustic element, but is used for vibration detection. In a specific principle, the piezoelectric effect is utilized to have reversibility, and when the piezoelectric ceramic dielectric material is subjected to mechanical vibration (or pressure), a certain amount of charges Q are generated on the two electrodes, so that voltage signals can be output on the electrodes, and vibration detection is realized.

In this embodiment, the sensing surface of the position sensor 2 corresponds to the lifting direction of the nozzle 7.

It should be noted that, since the purpose of the position sensor 2 is to detect whether the nozzle 7 is close to the hot bed 6, the sensing surface of the position sensor 2 is necessarily required to correspond to the lifting direction of the nozzle 7, and other directions are not required.

In this embodiment, the position sensor 2 and the piezoelectric ceramic plate 1 are respectively connected to a motherboard of the 3D printer.

It should be noted that, as mentioned above, the position sensor 2 is configured to detect whether the nozzle 7 is close to the thermal bed 6, and when it detects that the nozzle 7 is close to the thermal bed 6, it generates a proximity detection signal, and the piezoceramic sheet 1 is configured to detect vibration, and when it detects vibration, it generates a vibration detection signal, and these two signals are sequentially sent to the main board, and only when the main board receives these two signals, it is finally determined that the vibration detected by the piezoceramic sheet 1 is generated by the nozzle 7 falling down to collide with the thermal bed 6, and then it is finally determined that the nozzle 7 reaches the set position, that is, if the main board 1 only receives the vibration detection signal in these two signals, it is indicated that the vibration detection signal is an error signal generated by the influence of the external environmental factors by the detection of the piezoceramic sheet 1, and if the main board 1 only receives the proximity detection signal in these two signals, it is indicated that there may be an abnormality of the piezoceramic sheet 1 or an abnormality in the nozzle falling down.

Referring again to fig. 1, in this embodiment, the apparatus further comprises a vibration-transmitting plate 3;

the vibration-transmitting plate 3 is in contact with the thermal bed 6.

The vibration transmission plate 3 mainly plays a role of vibration transmission, and due to the vibration transmission plate 3, the piezoelectric ceramic sheet 1 can be fixed on the 3D printer, and the influence of vibration on the piezoelectric ceramic sheet 1 can be reduced as much as possible because the piezoelectric ceramic sheet is not directly contacted with the 3D printer. In order to fix the piezoelectric ceramic plate 1 on the vibration transmission plate 3, a fixing groove having the same shape as the piezoelectric ceramic plate 1 may be formed in the vibration transmission plate 3, and then the piezoelectric ceramic plate 1 is disposed in the fixing groove.

Referring again to fig. 1, in this embodiment, the device further comprises a spring 4;

the vibration transmission plate 3 is arranged below the hot bed 6;

It should be noted that, the vibration-transmitting plate 3 is generally a sheet metal part, the cost of the sheet metal part is low, the material cost of the product can be reduced, but the sheet metal part is easy to deform when being stressed due to the lower strength of the sheet metal part, which is unfavorable for the detection of vibration, so that the embodiment considers that the spring 4 is additionally arranged between the hot bed 6 and the vibration-transmitting plate 3, on one hand, the spring 4 transmits vibration to the vibration-transmitting plate 3, the vibration-transmitting plate 3 is transmitted to the piezoelectric ceramic plate 1, and on the other hand, the spring 4 also provides a deformation restoring force for the vibration-transmitting plate 3 (when the vibration-transmitting plate 3 is deformed by pressing down, the spring 4 has a tensile restoring force), so as to ensure that the vibration-transmitting plate 3 cannot fail.

Referring again to fig. 1, in this embodiment, the apparatus further comprises a fixed block 5;

It should be noted that, due to the fixing block 5, the vibration-transmitting plate 3 may be fixed on the fixing block 5 to provide fixing support for the vibration-transmitting plate 3, and it is also convenient to make the piezoelectric ceramic plate 1, the vibration-transmitting plate 3 and the springs 4 into an integral product.

Although the terms piezoelectric ceramic plate, position sensor, vibration transmitting plate, spring, etc. are used in the present application in many cases, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the application; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present application.

According to the sensing device provided by the application, the position sensor is added on the basis of the piezoelectric ceramic plate, and is used as a precondition for the detection of the piezoelectric ceramic plate, namely the position sensor is required to detect that the nozzle is close to the hot bed first, then the piezoelectric ceramic plate detects that the nozzle collides with the hot bed, so that the vibration detection of the piezoelectric ceramic plate can be finally determined to be accurate, the problem that the piezoelectric ceramic plate is easily influenced by external environmental factors is solved, and therefore, the size of the piezoelectric ceramic plate is not limited any more, and the sensing requirement can be met according to the printing size requirement, so that the sensing device is suitable for large-scale popularization and application.

Example two

Referring to fig. 2, an embodiment of the present application provides a 3D printing system, including a 3D printer and a sensing device as described in the first embodiment; wherein,

the 3D printer comprises a hot bed 6, nozzles 7 and a main board;

It should be understood that the 3D printer further includes other component designs, such as a traversing module, a lifting module, etc., which are specifically designed to ensure that the functions of the 3D printer are normal, and are not important in the design of the present embodiment, because they are already implemented in the prior art.

According to the 3D printing system provided by the application, the position sensor is added on the basis of the piezoelectric ceramic plate, and is used as a precondition when the piezoelectric ceramic plate is detected, namely the position sensor is required to detect that the nozzle is close to the hot bed first, then the piezoelectric ceramic plate detects that the nozzle bumps against the hot bed, so that the vibration detection of the piezoelectric ceramic plate can be finally determined to be accurate, the problem that the piezoelectric ceramic plate is easily influenced by external environmental factors is solved, and therefore, the size of the piezoelectric ceramic plate is not limited any more, and the sensing requirement can be met according to the printing size requirement, so that the 3D printing system is suitable for large-scale popularization and application.

Example III

Referring to fig. 3, fig. 3 is a flow chart of a 3D printing control method according to an embodiment of the present application, where the method is applicable to a scenario of 3D printing. The method specifically comprises the following steps:

and S301, in the leveling process, the position sensor descends along with the nozzle, detects whether the position sensor approaches the hot bed, and sends a proximity detection signal to the main board when the position sensor approaches the hot bed.

S302, detecting whether vibration from the nozzle falling collision to the hot bed is received or not by the piezoelectric ceramic plate, and sending a vibration detection signal to the main board when the vibration is received.

S303, after the main board receives the proximity detection signal and the vibration detection signal, determining the distance between the nozzle and the hot bed during printing according to the height of the nozzle, and recording the distance as the printing distance.

It should be noted that, only if the main board receives the proximity detection signal and the vibration detection signal, it will be finally determined that the vibration detected by the piezoelectric ceramic plate is generated by the nozzle falling and colliding to the hot bed, and then it is finally determined that the nozzle reaches the set position, that is, if the main board only receives the vibration detection signals in the two signals, it is indicated that the vibration detection signal is an error signal generated by the influence of external environmental factors by detecting the piezoelectric ceramic plate, and if the main board only receives the proximity detection signals in the two signals, it is indicated that there may be an abnormal situation of the piezoelectric ceramic plate or the nozzle falling abnormality, and at this time, the main board will send an alarm.

According to the 3D printing control method provided by the application, the position sensor is added on the basis of the piezoelectric ceramic plate, and is used as a precondition when the piezoelectric ceramic plate is detected, namely the position sensor is required to detect that the nozzle is close to the hot bed first, then the piezoelectric ceramic plate detects that the nozzle collides with the hot bed, so that the vibration detection of the piezoelectric ceramic plate can be finally determined to be accurate, the problem that the piezoelectric ceramic plate is easily influenced by external environmental factors is solved, and therefore, the size of the piezoelectric ceramic plate is not limited any more, and the sensing requirement can be met according to the printing size requirement, so that the method is suitable for large-scale popularization and application.

Example IV

Fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present application. Fig. 4 illustrates a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present application. The computer device 12 shown in fig. 4 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present application.

As shown in FIG. 4, the computer device 12 is in the form of a general purpose computing device. Components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.

Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. The computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard disk drive"). Although not shown in fig. 4, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the application.

A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the embodiments described herein.

The computer device 12 may also communicate with one or more external devices 15 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the computer device 12, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Moreover, computer device 12 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be appreciated that although not shown in fig. 4, other hardware and/or software modules may be used in connection with computer device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing a 3D printing control method provided by an embodiment of the present application.

Example five

A fifth embodiment of the present application provides a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement a 3D printing control method as provided by all embodiments of the present application.

Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

In view of the foregoing, it will be evident to a person skilled in the art that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not explicitly described herein, those skilled in the art will appreciate that the present application is intended to embrace a variety of reasonable alterations, improvements and modifications to the embodiments. Such alterations, improvements, and modifications are intended to be proposed by this application, and are intended to be within the spirit and scope of the exemplary embodiments of the application.

Furthermore, certain terms in the present application have been used to describe embodiments of the present application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. Thus, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be appreciated that in the foregoing description of embodiments of the application, various features are grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure. However, this is not to say that a combination of these features is necessary, and it is entirely possible for a person skilled in the art to extract some of them as separate embodiments to understand them when reading this application. That is, embodiments of the present application may also be understood as an integration of multiple secondary embodiments. While each secondary embodiment is satisfied by less than all of the features of a single foregoing disclosed embodiment.

Finally, it is to be understood that the embodiments of the application disclosed herein are illustrative of the principles of embodiments of the present application. Other modified embodiments are also within the scope of the application. Accordingly, the disclosed embodiments are illustrative only and not limiting. Those skilled in the art can adopt alternative configurations to implement the application of the present application according to embodiments of the present application. Accordingly, embodiments of the application are not limited to the embodiments precisely described in the application.

Claims

1. A sensing device applied to a 3D printer, characterized in that the device comprises a piezoelectric ceramic plate (1) and a position sensor (2); wherein,

the piezoelectric ceramic piece (1) is in contact with a thermal bed (6) of the 3D printer;

the position sensor (2) is arranged on a nozzle (7) of the 3D printer.

2. The sensing device according to claim 1, characterized in that the sensing surface of the position sensor (2) corresponds to the lifting direction of the nozzle (7).

3. The sensing device according to claim 1, characterized in that the position sensor (2) and the piezoceramic wafer (1) are connected to a motherboard of the 3D printer, respectively.

4. The sensing device according to claim 1, characterized in that the device further comprises a vibration-transmitting plate (3);

the piezoelectric ceramic piece (1) is arranged on the vibration transmission plate (3);

the vibration transmission plate (3) is contacted with the hot bed (6).

5. The sensing device according to claim 4, characterized in that the device further comprises a spring (4);

the vibration transmission plate (3) is arranged below the hot bed (6);

one end of the spring (4) is connected with the vibration transmission plate (3), and the other end of the spring (4) is in contact with the hot bed (6).

6. The sensing device according to claim 5, characterized in that the device further comprises a fixed block (5);

one end of the vibration transmission plate (3) is fixed on the fixed block (5), and the other end of the vibration transmission plate (3) is contacted with the hot bed (6) through the spring (4).

7. A 3D printing system comprising a 3D printer and a sensing device according to any of claims 1-6; wherein,

the 3D printer comprises a hot bed (6), nozzles (7) and a main board;

the piezoelectric ceramic plate (1) in the sensing device is in contact with the hot bed (6), and the position sensor (2) in the sensing device is arranged on the nozzle (7);

the piezoelectric ceramic piece (1) and the position sensor (2) are respectively connected with the main board.

8. A 3D printing control method applied to the 3D printing system according to claim 7, characterized in that the method comprises:

9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the 3D printing control method of claim 8 when executing the computer program.

10. A storage medium containing computer-executable instructions that are executed by a computer processor to implement the 3D printing control method of claim 8.