Multifunctional direct-writing 3D printer based on connecting station

Abstract

The utility model discloses a multifunctional direct-writing 3D printer based on a connecting station. The multifunctional direct-writing 3D printer comprises a base; a working platform; a pillar; a power mechanism; the printing head module system comprises a plurality of printing head modules and a driving module; the controller has multiple control modes; the connecting station is arranged on the base and is provided with a plurality of input interfaces and output interfaces, the input interfaces and the output interfaces are 9-25-core pluggable circuit interfaces and are respectively connected with the controller and the driving module, and after the driving module is connected with the connecting station, the driving module and the printing head module can form a control loop. The input interface of the driving module and the input interface of the connecting station are consistent in signal definition, the output interface of the driving module and the output interface of the connecting station are consistent in signal definition, and the connecting station achieves function switching of the printing head module system according to conversion of output signals of the controller. Rapid switching of printing heads with different direct writing functions can be realized through cooperation of the connection station and the printing head module system, and a circuit of a host does not need to be changed.

Description

Technical Field

[0001] The utility model relates to a 3D printing device, in particular to a multifunctional direct-writing 3D printer based on a connection station. Background Art

[0002] Direct Writing 3D printing is a technology that extrude the printing material from a nozzle fixed on a three-dimensional tele-motion platform, and then stacks it layer by layer to form an object with a three-dimensional structure. The printing material can be liquid ink in a syringe or ink cartridge, which is extruded directly from the nozzle; or it can be a solid filament or granular material, which is converted into a liquid state by heating and then extruded from the nozzle. Therefore, technologies such as FDM (fused deposition modeling), DIW (ink direct writing), and Polyjet (polymer jetting) can all be classified as direct writing 3D printing, and the main difference lies in the different molding principles. For example, FDM is based on the solid-liquid phase transition caused by heating and cooling, while DIW is mainly based on the Sol-Gel transition or photocuring of the raw material.

[0003] Normally, a direct writing 3D printer can only realize one function. If other functions are required, a lot of circuit modifications or component replacements will be required for the device, and even the overall mechanical structure must be changed to meet the requirements of different raw material forms or molding principles.

[0004] For example, the Chinese utility model patent with announcement number CN208180266U discloses "a multifunctional 3D printer" that realizes multi-functions by installing multiple print heads, but the print heads can only realize a single molding principle.

[0005] The Chinese utility model patent with announcement number CN209240492U discloses a "3D printer multifunctional set", which assembles a clay printing device, a laser engraving device, a chocolate printing device, a nylon printing device, and a laser scanning device on a 3D printer to form a printing set, and enables the 3D printer to have functions such as clay printing and chocolate printing. However, to achieve different functions, the entire printing platform needs to be replaced or increased. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a multifunctional direct-writing 3D printer based on a connection station.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A multifunctional direct writing 3D printer based on a connection station, comprising:

[0009] a base having a mounting surface;

[0010] A working platform, arranged on the mounting surface;

[0011] Support pillars are arranged on the mounting surface and located on both sides of the working platform;

[0012] A power mechanism, fixedly supported by the pillars and spanning above the working platform;

[0013] The print head module system is driven by a power mechanism to realize three-dimensional axis movement, which includes a number of print head modules and a drive module that drives the print head modules to move;

[0014] A controller, electrically connected to the power mechanism, having multiple control modes, and each control mode is provided with a corresponding output signal;

[0015] The connection station is arranged on the base, and has a plurality of pluggable input interfaces and output interfaces, wherein the input interface and the output interface are 9 to 25 core pluggable circuit interfaces, and are respectively connected to the controller and the drive module. After the drive module is connected to the connection station, a control loop can be formed with the print head module, and the input interface of the drive module is consistent with the input interface signal definition of the connection station, and the output interface of the drive module is consistent with the output interface signal definition of the connection station.

[0016] The connection station implements function switching of the print head module system according to the conversion of the output signal of the controller.

[0017] The input interface of the connection station is a standard 15-core pluggable DB interface.

[0018] The input interfaces 1 to 6 of the connection station are weak current signal sources, including thermistor A, thermistor B, serial port RXD, serial port TXD, motor pulse, and motor direction signal.

[0019] The input interfaces 7 to 11 of the connection station are high-current power supplies, including 5V, 24V, GND, 5VPWM, and 24VPWM.

[0020] The input interface 12-15 cores of the connection station are standby signals.

[0021] The output interface of the connection station is a standard 15-core pluggable DB interface.

[0022] When the driving module is in FDM mode, the signals of cores 1 to 6 include thermistor A and thermistor B, and the signals of cores 7 to 15 include heating, fan, and stepper motor signals A+, A-, B+, and B-.

[0023] When the driving module is in stepper motor mode, the signals of cores 7 to 15 include stepper motor signals A+, A-, B+, and B-.

[0024] When the drive module is in brushless servo motor mode, the signals of cores 1 to 6 include SensorA, SensorB, and SensorC, and the signals of cores 7 to 15 are 5V, GND, MotorA, MotorB, and MotorC.

[0025] The beneficial effect of the utility model is that the connection station can cooperate with the print head module system to realize the rapid switching of print heads with different direct writing functions without changing the circuit of the host.

[0026] 1) The driver module can be designed to selectively connect the required signals and power to the print head driver through a pluggable connector, and then convert them into print head drive signals and transmit them to the print head.

[0027] 2) Because the input pluggable interface of the connection station has standard signal definitions, the module will not be damaged even if the wrong driver module is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model.

[0029] Figure 2 It is a structural schematic diagram of the connection station and the drive module of the utility model.

[0030] Figure 3 This is a schematic diagram of a control loop formed by a connection station and a drive module of the utility model.

[0031] In the figure: 10. base, 11. pillar, 12. working platform, 20. X-axis power mechanism, 21. Y-axis power mechanism (A), 22. Y-axis power mechanism (B), 23. Z-axis power mechanism, 30. print head platform, 40. controller, 50. connection station, 55. connection station input interface, 56. connection station output interface, 60. print head driver module, 61. HMI module, 65. print head driver module output interface, 66. print head driver module input interface, 70. print head module. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] The utility model provides a multifunctional direct writing 3D printer based on a connection station, which comprises:

[0035] A base 10 having a mounting surface;

[0036] A working platform 12, arranged on the mounting surface;

[0037] Pillars 11 are arranged on the mounting surface and located on both sides of the working platform, and are used to support the power mechanism, so that it is always located above the working platform and can relatively realize movement in three directions: X, Y, and Z;

[0038] The power mechanism is fixedly supported by the pillar and spans over the working platform. The power mechanism is composed of an X-axis power mechanism 20, a Y-axis power mechanism (A) 21, a Y-axis power mechanism (B) 22, and a Z-axis power mechanism 23, and controls the slide to move along the X, Y, and Z directions in a three-dimensional coordinate system. The Y-axis power mechanism (A) 21 and the Y-axis power mechanism (B) 22 are fixedly connected to the pillar 11, the X-axis power mechanism 20 is fixedly connected to the slides of the Y-axis power mechanism (A) 21 and the Y-axis power mechanism (B) 22, and the Z-axis power mechanism 23 is fixedly connected to the slide of the X-axis power mechanism 20; the slide of the Z-axis power mechanism 23 is connected to the print head platform 30.

[0039] The print head module system is driven by a power mechanism to realize three-dimensional axis movement, and includes a plurality of print head modules 70 and a drive module 60 for driving the print head modules. The print head modules can be various combinations of print head modules such as FDM print head modules, push rod extrusion print head modules, and eccentric screw extrusion print head modules. Each drive module 60 is provided with a set of input interface 65 and output interface 66, and the interface is a 15-core pluggable circuit interface matching the connection station interface, wherein the input interface is connected to the controller through the connection station, and the output interface is connected to the print head module through the connection station, and the drive module is multiple groups;

[0040] A controller, electrically connected to the power mechanism, wherein the controller 40 is provided with a switch power supply, a control card, and a control element, and has multiple control modes, and each control mode is provided with a corresponding output signal, which is controllably connected to the corresponding drive module and the print head module, and controls the corresponding print head module to move according to the selected mode;

[0041] The connection station is arranged on the base, and has a plurality of pluggable input interfaces 55 and output interfaces 56. The connection station is also provided with an HMI (human-machine interface) interface, which is connected to the controller through a cable, and the HMI module 61 can be connected to the controller. The input interface and the output interface are 9 to 25-core pluggable circuit interfaces, which can transmit multiple analog / digital signals and multiple DC power supplies, and are respectively connected to the controller and the drive module. After the drive module is connected to the connection station, it can form a control loop with the print head module, that is, the controller is correspondingly connected to the drive module through the connection station, and then the drive module is connected to the print head module through the connection station, and the input interface of the drive module is consistent with the input interface signal definition of the connection station, and the output interface of the drive module is consistent with the output interface signal definition of the connection station, that is, the connection station is used as a transfer interface, and through the design of the pluggable socket, the function conversion of the print head module system is realized according to the conversion of the output signal of the controller.

[0042] The input interface of the connection station is a standard 15-core pluggable DB interface, and the interface is directional and can prevent the plug-in direction of the drive module.

[0043] The input interfaces 1 to 6 of the connection station are weak current signal sources, including thermistor A, thermistor B, serial port RXD, serial port TXD, motor pulse, and motor direction signal. The input interfaces 7 to 11 are strong current power sources, including 5V, 24V, GND, 5VPWM, and 24VPWM. The input interfaces 12-15 of the connection station are standby signals.

[0044] The output interface of the connection station is a standard 15-core pluggable DB interface.

[0045] When the driving module is in FDM mode, the signals of cores 1 to 6 include thermistor A and thermistor B, and the signals of cores 7 to 15 include heating, fan, and stepper motor signals A+, A-, B+, and B-.

[0046] When the driving module is in stepper motor mode, the signals of cores 7 to 15 include stepper motor signals A+, A-, B+, and B-.

[0047] When the drive module is in brushless servo motor mode, the signals of cores 1 to 6 include SensorA, SensorB, and SensorC, and the signals of cores 7 to 15 are 5V, GND, MotorA, MotorB, and MotorC.

[0048] [Example 1]

[0049] When the FDM direct writing function is required, the FDM driver module and the FDM print head module are used to form the relevant print head module system. The input interface signal of the connection station remains unchanged, and the output signals of cores 1 to 6 include thermistor A and thermistor B, and the signals of cores 7 to 15 include heating, fan, stepper motor signals A+, A-, B+, B-, etc.

[0050] [Example 2]

[0051] When the push rod extrusion direct writing function is required, the stepping mode drive module and the push rod extrusion print head module are used to form the relevant print head module system. The input interface signal of the connection station remains unchanged, and the output signal 7 to 15 cores contain stepper motor signals A+, A-, B+, B-, etc.

[0052] [Example 3]

[0053] When the eccentric screw extrusion direct writing function is required, the brushless servo motor mode drive module and the eccentric screw extrusion print head module are used to form the relevant print head module system. The input interface signal of the connection station remains unchanged. The signals of 1 to 6 cores include SensorA, SensorB, SensorC, etc., and the signals of 7 to 15 cores are 5V, GND, MotorA, MotorB, MotorC.

[0054] That is, the utility model can realize the rapid switching of print heads with different direct writing functions through the cooperation of the connection station and the print head module system, without changing the circuit of the host.

[0055] 1) The driver module can be designed to selectively connect the required signals and power to the print head driver through a pluggable connector, and then convert them into print head drive signals and transmit them to the print head module.

[0056] 2) Because the input pluggable interface of the connection station has standard signal definitions, the module will not be damaged even if the wrong driver module is used.

[0057] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A multifunctional direct writing 3D printer based on a connection station, characterized in that: It includes: A base (10) having a mounting surface; A working platform (12) is arranged on the mounting surface; Support pillars (11) are arranged on the mounting surface and located on both sides of the working platform; A power mechanism, fixedly supported by the pillars and spanning above the working platform; The print head module system is driven by a power mechanism to realize three-dimensional axis movement, which includes a number of print head modules and a drive module that drives the print head modules to move; A controller (40) is electrically connected to the power mechanism and has multiple control modes, and each control mode is provided with a corresponding output signal; A connection station (50) is arranged on the base, and has a plurality of pluggable input interfaces and output interfaces, wherein the input interfaces and output interfaces are 9 to 25-core pluggable circuit interfaces and are respectively connected to a controller and a drive module. After the drive module is connected to the connection station, it can form a control loop with the print head module, and the input interface of the drive module has the same signal definition as the input interface of the connection station, and the output interface of the drive module has the same signal definition as the output interface of the connection station. The connection station implements function switching of the print head module system according to the conversion of the output signal of the controller.

2. A multifunctional direct writing 3D printer based on a connection station according to claim 1, characterized in that: The input interface of the connection station is a standard 15-core pluggable DB interface.

3. A multifunctional direct writing 3D printer based on a connection station according to claim 2, characterized in that: The input interfaces 1 to 6 of the connection station are weak current signal sources, including thermistor A, thermistor B, serial port RXD, serial port TXD, motor pulse, and motor direction signal.

4. A multifunctional direct writing 3D printer based on a connection station according to claim 2, characterized in that: The input interfaces 7 to 11 of the connection station are high-current power supplies, including 5V, 24V, GND, 5VPWM, and 24VPWM.

5. A multifunctional direct writing 3D printer based on a connection station according to claim 2, characterized in that: The input interface 12-15 cores of the connection station are standby signals.

6. A multifunctional direct writing 3D printer based on a connection station according to any one of claims 2 to 5, characterized in that: The output interface of the connection station is a standard 15-core pluggable DB interface.

7. A multifunctional direct writing 3D printer based on a connection station according to any one of claims 2 to 5, characterized in that: When the driving module is in FDM mode, the signals of cores 1 to 6 include thermistor A and thermistor B, and the signals of cores 7 to 15 include heating, fan, and stepper motor signals A+, A-, B+, and B-.

8. A multifunctional direct writing 3D printer based on a connection station according to any one of claims 2 to 5, characterized in that: When the driving module is in stepper motor mode, the signals of cores 7 to 15 include stepper motor signals A+, A-, B+, and B-.

9. A multifunctional direct writing 3D printer based on a connection station according to any one of claims 2 to 5, characterized in that: When the drive module is in brushless servo motor mode, the signals of cores 1 to 6 include SensorA, SensorB, and SensorC, and the signals of cores 7 to 15 are 5V, GND, MotorA, MotorB, and MotorC.

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