CN219505453U

CN219505453U - Lifting driving mechanism of section bar 3D printer

Info

Publication number: CN219505453U
Application number: CN202123414614.9U
Authority: CN
Inventors: 张迎春; 王红立; 冯森; 王若羽; 李海波
Original assignee: Zhengzhou Lingyu New Materials Co Ltd
Current assignee: Zhengzhou Lingyu New Materials Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-08-11
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of 3D printer transmission mechanisms, in particular to a lifting driving mechanism of a section bar 3D printer. Including the driving shaft, the driving shaft both sides set up chain hanging mechanism respectively, chain hanging mechanism is the fixed action wheel in driving shaft one side, and the action wheel drives the elevating chain, and the elevating chain drives the elevating platform and goes up and down, and the fixed drive wheel in driving shaft middle section is connected through drive chain between the sprocket on the output shaft of drive wheel and power supply, forms a set of chain drive mechanism, its characterized in that: two groups of chain transmission mechanisms are arranged in parallel between the driving shaft and the power source output shaft. The second set of chain drive chains is tensioned in a position opposite to that of the first set, enabling the lifting action to be effected without being affected by the gap.

Description

Lifting driving mechanism of section bar 3D printer

Technical Field

The utility model relates to the technical field of 3D printer transmission mechanisms, in particular to a lifting driving mechanism of a section bar 3D printer.

Background

The 3D printing technology is gradually applied to a plurality of fields, the existing 3D printer for the profile is about 2 meters in length and width, the printer comprises a printer frame, a workpiece forming table is arranged at the lower end of the printer frame, vertical guide columns are respectively arranged at four corners of the frame, lifting tables are slidingly connected to each guide column, as shown in fig. 1, four lifting tables are located on the same plane and are connected through a tetragonal translation mechanism, the tetragonal translation mechanism is commonly found in a common 3D printer, horizontal tracks are fixed on two lifting tables on the left side, horizontal tracks are fixed on two lifting tables on the right side, the two horizontal tracks are parallel, a track sliding block is slidingly connected to the two horizontal tracks, a printing mechanism is slidingly arranged on the track sliding block and moves forwards and backwards on the two horizontal tracks, the printing mechanism is slidingly arranged on the track sliding block and moves left and right, and the sliding motion is realized through a motor.

Since 3D printing is a layer-by-layer printing from bottom to top, it is necessary to implement a lifting function of the lifting table, and the existing lifting function is as follows: the chain hanging mechanism is characterized by comprising a driving shaft hinged to the right upper corner of the frame, a first driven shaft hinged to the right lower corner of the frame, a second driven shaft hinged to the left lower corner of the frame, a third driven shaft hinged to the left upper corner of the frame, chain hanging mechanisms are respectively arranged on two sides of the driving shaft, the chain hanging mechanisms are driving shafts fixedly arranged on one side of the driving shaft, driven wheels are arranged on other driven shafts at corresponding positions, the chains are matched with the driving wheels and are fixedly arranged on right lifting tables, and then are matched with the first driven wheels, the second driven wheels and the third driven wheels sequentially, finally, the left lifting table is fixedly arranged at the tail end, the driving wheels drive the chains, the chains drive the left lifting table and the right lifting table to lift, the chain hanging mechanisms are respectively arranged on two sides of the driving shaft, the driving wheels are respectively controlled to lift by the front lifting table and the rear lifting tables, the middle section of the driving shaft is fixedly connected with chain wheels on the output shafts of the power source through annular chains, and a group of chain transmission mechanisms is formed.

In summary, the power source controls the sprocket wheel to rotate, the driving shaft is driven to rotate through the chain, and the driving shaft is controlled to lift through the chain.

Because the sprocket of the power source is connected with the driving wheel through the annular chain, a fit clearance inevitably exists, but because the 3D printing process only needs to execute the ascending function, the chain which is shifted to one side of the sprocket is tightened when the chain is installed, the clearance is left at the other side, the clearance can not influence the normal gradual ascending printing process, but the defect is that the clearance can influence the descending action to form errors when the motor is reversed, which is not allowed in the precise 3D printing process, and the descending action can not be normally completed.

The descent motion is not a motion necessary in 3D printing, but if the machine does not have a descent function, it is often necessary to manually adjust descent, and the use is inconvenient.

If the printer is a small-sized 3D printer, the chain can be replaced by a flexible synchronous belt, but the 3D printer of the section bar has huge volume and heavy components, and the synchronous belt can not finish transmission work and can only use the chain.

The chain connected with the lifting platform can realize the elimination of gaps by gravity under the action of the gravity of the lifting platform.

Then, how to achieve accurate descent work by motor reversal becomes a problem.

Disclosure of Invention

The utility model provides a lifting driving mechanism of a section 3D printer, which aims to solve the problem that the section 3D printer cannot ascend due to gaps.

The object of the utility model is achieved in the following way: the utility model provides a lifting drive mechanism of section bar 3D printer, includes the driving shaft, and the driving shaft both sides set up chain respectively and hang the mechanism, chain hanging the mechanism and be driving shaft one side fixed action wheel, the action wheel drives lift chain, and lift chain drives the elevating platform and goes up and down, and the fixed drive wheel in driving shaft middle section forms a set of chain drive mechanism through drive chain connection between the sprocket on the output shaft of drive wheel and power supply, its characterized in that: two groups of chain transmission mechanisms are arranged in parallel between the driving shaft and the power source output shaft.

The power source is a stepping motor.

The power source is a servo motor.

Compared with the prior art, the utility model can realize the lifting action without being influenced by the clearance by the second group of chain transmission mechanisms, wherein the tightening position of the chains of the second group of chain transmission mechanisms is opposite to that of the first group.

Drawings

FIG. 1 is a schematic diagram of a 3D printer for profiles;

fig. 2 is a schematic structural diagram of a profile 3D printer implementing six-directional movement;

FIG. 3 is a side view in the direction of the arrow in FIG. 1;

FIG. 4 is a schematic diagram of the structure of the present utility model;

FIG. 5 is a cross-sectional view of A-A and B-B.

Wherein the printer frame 1; a drive shaft 21; a driving wheel 211; a drive wheel 212; a first driven shaft 22; a first driven wheel 221; a second driven shaft 23; a second driven wheel 231; a third driven shaft 24; a third driven wheel 241; a guide post 3; a lifting table 4; a horizontal rail 5; a track slider 6; a printing mechanism 7; a lifting chain 8; a work forming table 9; a power source 10; a sprocket 101; a drive chain 102.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used for convenience of description and for simplifying the description only with respect to the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

As shown in fig. 1-5, a 3D printer for profiles has a length and width Gao Jun of about 2 meters, and comprises a printer frame 1, wherein a workpiece forming table 9 is arranged at the lower end of the printer frame 1, four vertical guide posts 3 are respectively arranged at four corners of the frame, lifting tables 4 are slidingly connected on each guide post 3, as shown in fig. 1, four lifting tables 4 are positioned on the same plane and are connected through a tetragonal translation mechanism, the tetragonal translation mechanism is commonly used in a common 3D printer, in this case, horizontal rails 5 are fixed on two lifting tables 4 on the left side, horizontal rails 5 are fixed on two lifting tables on the right side, two horizontal rails 5 are parallel, rail sliders 6 are slidingly connected on the two horizontal rails 5, a printing mechanism 7 is slidingly arranged on the rail sliders 6, the two horizontal rails 5 are slidingly moved back and forth, the printing mechanism 7 is slidingly moved left and right on the rail sliders 6 through a motor, and the sliding motion is realized through a motor, which is not shown in the drawing.

Since 3D printing is a layer-by-layer printing from bottom to top, it is necessary to realize the raising function of the lift table 4, and the existing raising function is as follows: the lifting chain 8 is matched with the driving wheel 211 and is fixed with the right lifting table 4, then is matched with the first driven wheel 221, the second driven wheel 231 and the third driven wheel 241 in sequence, finally the left lifting table 4 is fixed at the tail end, the driving wheel 211 drives the lifting chain 8, the lifting chain 8 drives the left lifting table 4 to lift, the two sides of the driving shaft 21 are respectively provided with chain hanging mechanisms which respectively control the lifting of the front lifting table 4 and the rear lifting table 4, the middle section of the driving shaft 21 is fixedly provided with the driving wheel 212, and the driving wheel 212 is connected with the chain wheel 101 on the output shaft of the power source 10 through the annular transmission chain 102 to form a group of chain transmission mechanism.

In summary, the sprocket 101 is controlled to rotate by the power source 10, the driving shaft 21 is driven to rotate by the driving chain 102, and the driving shaft 21 is controlled to lift the left and right lifting tables 4 by the lifting chain 8.

Since the sprocket 101 of the power source 10 is connected to the driving wheel 212 through the endless transmission chain 102, there is inevitably a fit gap, but since only the rising function is required to be performed in the 3D printing process, the chain that is turned into one side of the sprocket 101 when the transmission chain 102 is installed is tightened, the gap is left on the other side, and the gap does not affect the printing process that normally rises gradually, but there is a disadvantage in that the gap affects the rising action when the motor is reversed, forming an error, which is not allowed in the precise 3D printing, so that the rising action cannot be completed normally.

In the utility model, two groups of chain transmission mechanisms are arranged in parallel between the driving shaft 21 and the output shaft of the power source 10, specifically as shown in fig. 4, one chain wheel 101 is arranged at the lengthening position, one driving wheel 212 is arranged at the corresponding position on the driving shaft 21 and matched with the lengthening position, the two chain transmission mechanisms are connected through another annular transmission chain 102, and the tightening position of the chains of the second group of chain transmission mechanisms is opposite to that of the first group, so that the lifting action can be realized without being influenced by gaps, and the gap elimination is realized as shown in fig. 5.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a lifting drive mechanism of section bar 3D printer, includes the driving shaft, and the driving shaft both sides set up chain respectively and hang the mechanism, chain hanging the mechanism and be driving shaft one side fixed action wheel, the action wheel drives lift chain, and lift chain drives the elevating platform and goes up and down, and the fixed drive wheel in driving shaft middle section forms a set of chain drive mechanism through drive chain connection between the sprocket on the output shaft of drive wheel and power supply, its characterized in that: two groups of chain transmission mechanisms are arranged in parallel between the driving shaft and the power source output shaft.

2. The lifting drive mechanism of a profile 3D printer according to claim 1, wherein: the power source is a stepping motor.

3. The lifting drive mechanism of a profile 3D printer according to claim 1, wherein: the power source is a servo motor.