CN108297414A - A kind of 3D printer hott bed reorientation module - Google Patents

Abstract

The invention provides a 3D printer hot bed repositioning module, which relates to the technical field of 3D printing, and is mainly composed of a control part and a mechanical execution part, wherein the control part includes a single-chip microcomputer control chip, control buttons connected with the single-chip microcomputer control chip, and a liquid crystal display screen and a stepper motor drive module, the stepper motor drive module is connected to the mechanical execution part; the mechanical execution part includes a stepper motor, a screw rod driven by the stepper motor, a polished rod parallel to the screw rod, and the screw rod and the polished rod are provided with There is a slider, and the threaded fit between the slider and the screw rod, the linear guide fit between the slider and the polished rod, the photocell switch is set on the slider; the hot bed stopper is matched with the photocell switch , the hot bed block is fixed on the hot bed. The invention is independent of the main control system of the 3D printer, not only can fine-tune the zero point, but also can set any height as the zero point, thus providing more possibilities for 3D printing.

Description

A 3D printer hot bed repositioning module

technical field

The invention relates to the technical field of 3D printing, in particular to a hot bed repositioning module of a 3D printer.

Background technique

3D printing (3DP) is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing.

At present, with the continuous development of 3D printers, a variety of motion structures have appeared, but the problem of positioning the heated bed has always existed. In the prior art, the positioning module of the traditional mechanical travel switch is used, resulting in that each time the heated bed returns There are small differences in the position to the absolute zero point, which affects the overall printing quality. Secondly, if you need to add a new print on the original print, it is difficult for traditional 3D printers to do it. Generally, glue is used to stick It will greatly affect the aesthetics and strength of the finished product.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned defects, and provide a heating bed positioning module used in a 3D printer for customizing the height of the heating bed.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions to realize:

A 3D printer hot bed repositioning module is characterized in that: it is mainly composed of a control part and a mechanical execution part,

Wherein the control part comprises a single-chip microcomputer control chip (11), a control button (3) connected with the single-chip microcomputer control chip (11), a liquid crystal display screen (2) and a stepping motor drive module (4), a stepping motor drive module (4 ) is connected to the mechanical execution part;

The mechanical execution part includes a stepping motor (5), a screw mandrel (7) driven by the stepping motor (5), a polished rod (6) parallel to the screw mandrel (7), the screw rod (7) and the polished rod (6) is provided with slide block (8), is threaded fit between slide block (8) and screw mandrel (7), is linear guiding fit between described slide block (8) and polished rod (6), and described A photocell switch (9) is arranged on the slider (8);

Cooperating with the photocell switch (9) is a hot bed stopper (10), and the hot bed stopper (10) is fixed on the hot bed (12).

As a preference, both the stepping motor (5) and the polished rod (6) are fixedly installed on the fixing piece (1).

As a preference, a through hole is provided on the fixing piece (1), the stepper motor (5) is fixed under the fixing piece (1), the screw mandrel (7) is positioned above the fixing piece (1), and the screw mandrel The lower end of (7) passes through the through hole and is connected with the stepper motor (5).

Preferably, a polished rod fixing position is provided on the fixing member (1), and the polished rod (6) is longitudinally fixed on the polished rod fixing position.

Preferably, the stepping motor driving module (4) is connected with the stepping motor (5) of the mechanical execution part.

As preferably, the stepper motor (5) adopts a 42mm specification stepper motor.

As a preference, a linear bearing is installed inside the slider (8).

A relocation method using the hot bed relocation module, characterized in that: after the 3D printer executes the command to return to the zero point, it observes the difference with the target height, and then resets it through the hot bed relocation module Absolute zero point, execute the zero return command again; the 3D printer will set the hot bed to the desired height;

The specific steps are:

Through the control button (3), the desired height is adjusted, and the data is transmitted to the single-chip microcomputer control chip (11), and the single-chip microcomputer control chip (11) displays the data through the liquid crystal display (2), and at the same time transmits the control data to the step Into the motor drive module (4), the stepper motor drive module (4) output control current control stepper motor (5), the stepper motor (5) drives the screw mandrel (7) to rotate, and the screw mandrel (7) drives the slider ( 8) Move up or down, change the position of the photocell switch (9) by controlling the up and down position of the slider (8), so that the stopper (10) blocks the photocell switch (9) at the set height, and finally controls The heated bed (12) reaches the desired height.

The beneficial effects of the present invention are:

The invention provides a new type of hot bed repositioning module and repositioning method for a 3D printer. The hot bed repositioning module is independent of the main control system of the 3D printer. Provide more possibilities. Solve the defect that there is a small error in the position of the hot bed returning to the absolute zero point in the prior art, improve the quality of 3D printing; solve the problem that it is difficult to add new prints on the original prints in traditional 3D printers.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Reference signs: 1-fixer; 2-LCD display; 3-control buttons; 4-stepping motor drive module; 5-stepping motor; 6-polished rod; 7-screw rod; 8-slider; 9- Photoelectric switch; 10-heated bed block; 11-single-chip microcomputer control chip; 12-heated bed.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with specific embodiments and accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, not all . Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

As shown in Figure 1, a 3D printer hot bed repositioning module is composed of a control part and a mechanical execution part, wherein the control part includes a single-chip microcomputer control chip 11, a control button 3 connected to the single-chip microcomputer control chip 11, and a liquid crystal display 2 And stepper motor drive module 4, stepper motor drive module 4 is connected to mechanical execution part; Mechanical execution part comprises stepper motor 5, the screw mandrel 7 driven by stepper motor 5, the polished rod 6 parallel with screw mandrel 7, so The screw rod 7 and the polished rod 6 are provided with a slide block 8, the slide block 8 and the screw rod 7 are threaded, the slide block 8 and the polished rod 6 are linearly guided, and the slide block 8 is provided with Photoelectric cell switch 9; What cooperates with photoelectric cell switch 9 is the hot bed stopper 10, and the hot bed stopper 10 is fixed on the hot bed 12.

The stepping motor 5 and the polished rod 6 are all fixedly installed on the fixing part 1, and the fixing part 1 is provided with a through hole, the stepping motor 5 is fixed under the fixing part 1, the screw mandrel 7 is positioned at the top of the fixing part 1, and the screw mandrel 7 The lower end of the lower end passes through the through hole and is connected with the stepping motor 5; the fixing member 1 is provided with a polished rod fixing position, and the polished rod 6 is longitudinally fixed on the polished rod fixing position.

A repositioning method using a 3D printer hot bed repositioning module. After the 3D printer executes the command to return to the zero point, it observes the difference with the target height, and then resets the absolute zero point through the hot bed repositioning module. Execute the zero return command; the 3D printer will set the heat bed to the desired height;

The specific steps are:

By controlling the button 3, the desired height is adjusted, and the data is transmitted to the single-chip microcomputer control chip 11, and then the single-chip microcomputer control chip 11 displays the data through the liquid crystal display 2, and at the same time transmits the control data to the stepping motor drive module 4, stepping The motor drive module 4 outputs control current to control the stepping motor 5, the stepping motor 5 drives the screw rod 7 to rotate, and the screw rod 7 drives the slider 8 to move up or down, and the photocell switch 9 is changed by controlling the up and down position of the slider 8 position, so that the block 10 blocks the photocell switch 9 at the set height, and finally controls the heated bed 12 to reach the desired height.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and those described in the above-mentioned embodiments and description are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A 3D printer hot bed repositioning module is characterized in that: it is mainly composed of a control part and a mechanical execution part, Wherein the control part comprises a single-chip microcomputer control chip (11), a control button (3) connected to the single-chip microcomputer control chip (11), a liquid crystal display (2) and a stepping motor drive module (4), a stepping motor drive module (4 ) is connected to the mechanical execution part; The mechanical execution part includes a stepping motor (5), a screw mandrel (7) driven by the stepping motor (5), a polished rod (6) parallel to the screw mandrel (7), the screw rod (7) and the polished rod (6) is provided with slide block (8), is threaded fit between slide block (8) and screw mandrel (7), is linear guiding fit between described slide block (8) and polished rod (6), and described A photocell switch (9) is arranged on the slider (8); Cooperating with the photocell switch (9) is a hot bed stopper (10), and the hot bed stopper (10) is fixed on the hot bed (12). 2. The 3D printer hot bed repositioning module according to claim 1, characterized in that: the stepping motor (5) and the polished rod (6) are both fixedly installed on the fixing member (1). 3. The 3D printer hot bed repositioning module according to claim 2, characterized in that: the fixing part (1) is provided with a through hole, and the stepping motor (5) is fixed on the fixing part (1) Below, the screw mandrel (7) is located above the fixing piece (1), and the lower end of the screw mandrel (7) passes through the through hole and is connected with the stepper motor (5). 4. The repositioning module of the hot bed of a 3D printer according to claim 2, characterized in that: the fixing member (1) is provided with a polished rod fixing position, and the polished rod (6) is longitudinally fixed on the polished rod fixing position. 5. The 3D printer hot bed repositioning module according to claim 1, characterized in that: the stepping motor driving module (4) is connected with the stepping motor (5) of the mechanical execution part. 6. The 3D printer hot bed repositioning module according to claim 1, characterized in that: the stepper motor (5) adopts a 42mm stepper motor. 7. The 3D printer hot bed repositioning module according to claim 1, characterized in that: a linear bearing is installed inside the slider (8). 8. A relocation method using the hot bed relocation module according to claim 1, characterized in that: after the 3D printer executes the command to return to zero, it observes the difference with the target height, and then repositions through the hot bed The module resets the absolute zero point and executes the zero return command again; the 3D printer will set the hot bed to the desired height; The specific steps are: Through the control button (3), the desired height is adjusted, and the data is transmitted to the single-chip microcomputer control chip (11), and the single-chip microcomputer control chip (11) displays the data through the liquid crystal display (2), and at the same time transmits the control data to the step Into the motor drive module (4), the stepper motor drive module (4) output control current control stepper motor (5), the stepper motor (5) drives the screw mandrel (7) to rotate, and the screw mandrel (7) drives the slider ( 8) Move up or down, change the position of the photocell switch (9) by controlling the up and down position of the slider (8), so that the stopper (10) blocks the photocell switch (9) at the set height, and finally controls The heated bed (12) reaches the desired height.