CN210100721U - But direction of negativity adjustment module device of desktop 3D printer - Google Patents

Abstract

The utility model discloses a module device capable of adjusting the direction of a desktop 3D printer, which comprises a first guide rod, a slide block, a position slice and a limit switch; the sliding block is provided with a guide rod hole, is sleeved on the first guide rod through the guide rod hole and can move along the first guide rod; the position sheet and the limit switch are respectively arranged on the sliding block and a rack of the desktop 3D printer; the position slice is matched with the limit switch to limit the sliding block in the direction of the first guide rod. The position slice of the utility model can pass through the limit switch, not only can finely adjust the zero point, but also can set any point of the Z axis (the direction of the first guide rod) as the starting point of the printing nozzle, so that even if the 3D printer is worn and the control precision is reduced, the distance between the printing nozzle and the receiving heating bed can reach a proper distance, and the printing model effect of the 3D printer is greatly improved; the utility model discloses simple structure still has, convenient operation's advantage.

Description

But direction of negativity adjustment module device of desktop 3D printer

Technical Field

The utility model relates to a 3D printer specifically is a but direction of negativity adjustment module device that relates to a desktop 3D printer.

Background

The 3D printing technology is a rapid prototyping technology and is increasingly used in the design and manufacture of innovative products. The desktop 3D printer of FDM (fused deposition modeling) integrates the advantages of more printing materials, high precision, high speed and the like, and is mainly used for prototype design of products. The technology is that hot melt type material wires are heated and melted, extruded out from a spray head, deposited on a receiving hot bed or a layer of solidified material before, and then solidified and molded after the temperature is lower than the solidification temperature of the material wires, and finally printed into an entity. The printing condition of the first layer of the model directly influences the molding effect of the model behind, the matching of the distance between the printing spray head and the receiving hot bed and the extrusion amount (the layer height for printing the first layer) directly influences the printing effect of the first layer, the distance between the printing spray head and the receiving hot bed is different, the stress of the material liquid drops in an electric field is different, and the distance between the spray heads is too large, so that the printing is discontinuous; the spray head interval is too small, so that Taylor cone jet flow cannot be formed, and the printing line width is too thick. Therefore, the selection of the initial position of the receiving hot bed of the 3D printer is particularly important, the reasonable distance between the printing nozzle and the receiving hot bed is generally realized by adopting an empirical value mode in the actual use process, but the device is limited by an original limit switch when the device is worn and the control precision is reduced along with the long-term use of the desktop 3D printer, so that the distance between the printing nozzle and the receiving hot bed cannot reach a proper distance, and the model effect is greatly influenced.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a simple structure, convenient operation, but flexible operation's desktop 3D printer's direction of negating adjustment module device, it enables the desktop 3D printer appear wearing and tearing and control accuracy under the reduction of the precision, also enables to print the shower nozzle and receive the hotbed interval and reach suitable distance, improves the 3D printer greatly and prints the model effect.

The utility model adopts the technical proposal that: a negative direction adjusting module device of a desktop 3D printer comprises a first guide rod, a sliding block, a position slice and a limit switch; the sliding block is provided with a guide rod hole, is sleeved on the first guide rod through the guide rod hole and can move along the first guide rod; the position sheet and the limit switch are respectively arranged on the sliding block and a rack of the desktop 3D printer; the position sheet comprises a square plate-shaped mounting part and a blocking sheet, the blocking sheet is mounted on the mounting part, and the position sheet is mounted on the sliding block through the mounting part; the limit switch is provided with a groove, the groove is arranged corresponding to the barrier thin sheet of the barrier thin sheet, and the barrier thin sheet can pass through the groove of the limit switch; a photoelectric tube is arranged in the groove, and the limit switch is connected with the main control box; when the position sheet is close to the limit switch and blocks the photoelectric tube of the limit switch, the limit switch-on light will send an in-place command to a main control box of the 3D printer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses make desktop 3D printer not in the module mechanical structure who needs the position baffle, the position thin slice can pass limit switch, not only can finely tune zero point, can also set up Z axle (first guide bar direction) random point and be the printing shower nozzle starting point, even make the 3D printer even if appear wearing and tearing and control accuracy reduces the condition, also can make printing shower nozzle and receiving the hot bed interval and reach suitable distance, improve the 3D printer greatly and print the model effect; the utility model discloses simple structure still has, convenient operation's advantage.

Drawings

Fig. 1 is a structural view of the present invention.

Fig. 2 is a structural diagram of a desktop 3D printer for which the present invention is used.

Fig. 3 is a flowchart of the adjustment of the present invention.

In the figure: 1-first guide bar, 2-sliding screw rod, 3-second guide bar, 4-printing nozzle, 5-main control box, 6-Y axis motor, 7-position slice, 8-hot bed, 9-limit switch, 10-Z axis motor, 11-X axis motor, and 12-slide block.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model comprises a first guide rod 1, a slide block 12, a position slice 7 and a limit switch 9; the sliding block 12 is provided with a guide rod hole, and the guide rod hole is sleeved on the first guide rod 1 and can move along the first guide rod 1. The position sheet 7 and the limit switch 9 are respectively arranged on the sliding block 12 and a machine frame of the desktop 3D printer; the position sheet 7 and the limit switch 9 are matched to limit the slide block in the direction of the first guide rod 1. The position sheet and the limit switch are respectively arranged on the sliding block and a rack of the desktop 3D printer; the position sheet 7 comprises a square plate-shaped mounting part and a blocking sheet, the blocking sheet is mounted on the mounting part, and the position sheet is mounted on the slide block 12 through the mounting part; the limit switch 9 is provided with a groove which is arranged corresponding to the barrier thin sheet of the barrier thin sheet, and the barrier thin sheet can pass through the groove of the limit switch 9; a photoelectric tube is arranged in the groove, and a limit switch 9 is connected with the main control box 5; when the position sheet is close to the limit switch and blocks the photocell of the limit switch, the limit switch-on light will send an in-place command to the main control box 5 of the 3D printer.

The utility model discloses a limit switch 9 need not set up the position baffle, and limit switch 9 can be passed to position thin slice 7, the utility model discloses can adjust in the past the negative direction, not only can finely tune zero point, can also set up Z axle (first guide bar direction) random point for printing the shower nozzle starting point, solved the problem that the interval is improper that the desktop 3D printer caused because the machine is ageing prints the shower nozzle and receives the hotbed, improved the quality that 3D printed.

As shown in fig. 2, the utility model discloses during the use, first guide bar 1, second guide bar 3, slip lead screw 2, limit switch 9 switch and Z axle motor 11 are fixed in desktop 3D printer frame, and first guide bar 1, second guide bar 3, slip lead screw 2 ensure to print the unified action of shower nozzle, can avoid the condition of 3D printing a slope. The Z-axis motor 10 rotates to drive the sliding screw rod 2 to rotate, and the nut on the sliding screw rod 2 can drive the printing nozzle 4, the Y-axis motor 6 and the sliding block 12 to move along the first guide rod 1. The Y-axis motor 6 can drive the position of the printing nozzle 4 in the Y-axis direction to change, the X-axis motor 11 can change the position of the hot bed 8, and thus the three motors together realize the movement of the printing nozzle 4 in a three-dimensional space relative to the hot bed 8. When the position sheet 7 approaches the limit switch 9 and blocks the photocell of the limit switch, the limit switch-on light 9 will issue a put-in-place command to the main control box 5 of the 3D printer.

As shown in fig. 3, the adjustment process of the present invention is as follows:

step 1, starting a desktop 3D printer, and starting to prepare an adjustment module device;

step 2, acquiring an initial position of a Z axis;

step 3, the controller starts to acquire the Z-axis position of the printing nozzle;

step 4, the main control box 5 compares the initial position of the printing nozzle 4 on the Z axis with the position of the thermal bed 8, if the initial position is not at the same position, the Z axis motor 10 drives the sliding block 12 to move, the position of the printing nozzle 4 in the Z axis direction is finely adjusted until the thermal bed 8 and the printing nozzle 4 are overlapped at the initial position on the Z axis, and if the initial position is at the same position, the next step is carried out;

and 5, manually judging the distance between the printing nozzle 4 and the hot bed 8, if the distance between the printing nozzle 4 and the hot bed 8 is too large, enabling the receiving hot bed 8 to move in the negative direction, and if the distance is too small, enabling the hot bed 8 to move in the positive direction. Just because the limit switch 9 shown in fig. 2 is not provided with a position baffle, the hot bed 8 can be adjusted flexibly;

and 6, after the adjustment and the setting of the hot bed 8 are finished, starting the model printing operation.

Claims (1)

1. The utility model provides a but desktop 3D printer's direction of negativity adjustment module device which characterized by: comprises a first guide rod, a slide block, a position slice and a limit switch; the sliding block is provided with a guide rod hole, is sleeved on the first guide rod through the guide rod hole and can move along the first guide rod; the position sheet and the limit switch are respectively arranged on the sliding block and a rack of the desktop 3D printer; the position sheet comprises a square plate-shaped mounting part and a blocking sheet, the blocking sheet is mounted on the mounting part, and the position sheet is mounted on the sliding block through the mounting part; the limit switch is provided with a groove, the groove is arranged corresponding to the barrier thin sheet of the barrier thin sheet, and the barrier thin sheet can pass through the groove of the limit switch; a photoelectric tube is arranged in the groove, and the limit switch is connected with the main control box; when the position sheet is close to the limit switch and blocks the photoelectric tube of the limit switch, the limit switch-on light will send an in-place command to a main control box of the 3D printer.

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