WO2015081597A1

WO2015081597A1 - Multi-nozzle 3d printer

Info

Publication number: WO2015081597A1
Application number: PCT/CN2014/000338
Authority: WO
Inventors: 郭戈
Original assignee: 北京太尔时代科技有限公司; 郭戈
Priority date: 2013-12-04
Filing date: 2014-03-28
Publication date: 2015-06-11
Also published as: CN103660299B; CN103660299A

Abstract

A multi-nozzle 3D printer comprising no less than one nozzle and a movable support frame. No less than one horizontal movement apparatus is fixed onto the movable support frame. One nozzle is fixed onto each horizontal movement apparatus. The movable support frame moves in the vertical and longitudinal directions. The beneficial effect is such that: two or more nozzles can be simultaneously provided in parallel, the nozzles are directly fixed on the axis of motion, frequent up and down movements are absent, thus reducing the lack of printing precision caused by changes in nozzle positions.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer, and in particular to a 3D printer with a multi-nozzle setting. BACKGROUND OF THE INVENTION 3D printers in the prior art are all provided as a single nozzle, a nozzle is arranged in the nozzle or a plurality of nozzles are integrated, and most of them are collectively described as two nozzles. In practical applications, two nozzles are taken as an example, There is a limitation in position. When one of the nozzles is working, the other nozzle needs to move in the Z direction (vertical direction) to the book in order to prevent the squatting model, avoiding the model. Therefore, since a plurality of nozzles are integrated on the nozzle, affected by the position and relative motion, when the overall structure of the nozzle is not changed greatly, the number of nozzles is limited, and is generally a double nozzle. It is difficult to integrate a plurality of nozzles in the nozzle of the prior art 3D printer. In addition, in the long-term use of the 3D printer in the prior art, frequent movement of the nozzle may cause fatigue loss of the connecting member, and if it is not timely maintained, a printing accuracy error may be formed. SUMMARY OF THE INVENTION In view of the above, the present invention provides a multi-nozzle 3D printer to solve the problems of the prior art nozzles and the number of nozzles being too small. In order to achieve the above object, the technical solution adopted by the present invention is: A multi-nozzle 3D printer comprising not less than one nozzle and a moving bracket, wherein the moving bracket is fixed with not less than one horizontal motion device, each A head is fixed on the horizontal motion device, and the moving bracket moves in the vertical direction and the longitudinal direction. Multiple nozzles can be mounted on the 3D printer by juxtaposing multiple nozzles in the same direction of motion. Preferably, the horizontal moving device comprises a motor, a parallel shaft driven by the motor, the nozzle is fixed on the parallel shaft, and the vertical shaft is connected to both ends of the parallel shaft. Composed of a motor, a parallel shaft, and a spray head The composition of the motion device is relatively simple, the failure rate is low, and the precision error is small. Such a transmission system is accurate in transmission and stable in performance. Further, a distance adjusting device is connected between the parallel shaft and the vertical shaft. It is more convenient to assemble, and it can ensure that multiple parallel axes are at the same height. In addition, after a long time of use, the height of the parallel shaft can be adjusted after an error. Preferably, the distance adjusting device comprises an L-shaped stopper, a thread adjusting gap device and a backing plate; both ends of the parallel shaft are fixed on the L-shaped stopper, and a thread adjusting gap device is arranged between the L-shaped stopper and the vertical shaft, L The gap between the shaped block and the vertical axis is pressed with a backing plate. The distance adjusting device has a simple structure, is a common mechanical structure, has reliable performance and low economic cost. Further, a position adjusting device is connected between the nozzle and the parallel shaft. It is more convenient to assemble. When assembling, ensure that the nozzles of the nozzles are in the same position. When there is an error in use, the position of the nozzles can be fine-tuned. Preferably, the position adjusting device comprises an adapter plate, a fixing block and a fixing bolt; the adapter plate is fixed on the nozzle, the fixing block is sleeved on the parallel shaft, and the fixing bolt is threadedly connected to the fixing block through the adapter plate, and the adapter plate is opened There are long slotted holes that fit into the fixing bolts. The position adjusting device has the advantages of simple structure, common mechanical structure, reliable performance and low economic cost. Further, not less than one nozzle is integrated on the nozzle. A plurality of nozzles and a plurality of nozzles are provided in each of the nozzles, so that a large number of nozzles can be mounted. Or a plurality of nozzles and one nozzle in each nozzle, which realizes a plurality of nozzles through a plurality of nozzles, and eliminates the problem of deterioration in accuracy when a plurality of nozzles in one nozzle rotate. Effectively achieve uniformity of precision and quantity. The beneficial effects of the invention are: It is possible to have two or more nozzles in parallel at the same time. The nozzle is directly fixed on the moving shaft, and there is no frequent up and down movement, which reduces the lack of printing accuracy due to the position change of the nozzle. DRAWINGS

1 is a schematic structural view of a multi-nozzle 3D printer according to the present invention; 2 is a schematic structural view of a distance adjusting device according to the present invention;

3 is a schematic structural view of a position adjusting device according to the present invention;

FIG. 3 is a schematic structural view of the adapter plate according to the present invention.

In the picture,

1, moving bracket; 1 1, vertical axis; 2, nozzle; 3, horizontal moving device; 31, parallel axis; 4, distance adjustment device; 41, L-shaped block; 42, thread adjustment gap device; 5, position adjustment device; 51, adapter plate; 52, fixed block; 5 3, fixing bolts. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention are described below in conjunction with the accompanying drawings, and it is obvious that the drawings are only a part of the present invention.

As shown in FIG. 1-4, the multi-nozzle 3D printer provided by the present invention comprises a plurality of nozzles 2, each of which is fixedly disposed on a horizontal moving device 3, and a plurality of horizontal moving devices 3 are arranged side by side in the horizontal direction. The horizontal moving device 3 is fixed to a moving bracket 1. The function of the horizontal moving device 3, the moving bracket 1 is to enable the head to realize positioning and movement in a three-dimensional space. Here, the horizontal direction is not limited to a specific lateral direction, vertical direction or longitudinal direction, and the horizontal direction here means only that it constitutes a three-dimensional space together with the vertical and the longitudinal direction. In addition, the moving bracket can be an integral device, and the device can simultaneously realize vertical and longitudinal movement, and the vertical and vertical directions are driven by one driving device; meanwhile, the vertical and vertical movement can also refer to two separate driving devices, that is, one vertical. A longitudinal drive is added to the drive. In Fig. 1, the head 1 is moved back and forth in the horizontal direction by the horizontal moving device 3, and the vertical and vertical movements are performed by moving the bracket 1, and the head 2 is thereby moved at any point in the three-dimensional space. Multiple nozzles 2 are arranged side by side. During operation, the desired nozzle 2 is selected for motion control, and the non-working nozzle 2 is in the standby state.

In the multi-nozzle 3D printer provided by the present invention, the horizontal moving device 3 preferably includes a motor, a parallel shaft 31 driven by the motor, and a head fixed to the parallel shaft 31. The vertical shaft 11 is slidably coupled to both ends of the parallel shaft 31. In practical applications, the motor can be connected to the parallel shaft 31 through a gear belt transmission system, and the nozzle 1 can also be connected to the parallel shaft 31 through the nozzle connector for installation and disassembly. The remaining common mechanical transmission mechanisms such as rod drive, chain drive and cam mechanism Can be. In addition, the three-dimensional motion technology is a mature technology in the field of machine tools and many mechanical fields, and the vertical and vertical moving devices 1 and the horizontal moving device 3 are not described excessively.

It should be noted that the 3D printer in the name of the present invention should be understood in a broad sense, and includes not only small 3D printers for personal use but also 3D printers for industrial applications, commonly known as rapid prototyping machines.

The multi-nozzle 3D printer provided by the invention has a nozzle in the nozzle 2, and the nozzle should be fixed on the nozzle 2, which eliminates the dimensional error caused by the rotation of the plurality of nozzles in the prior design and requires frequent nozzle replacement. Defects. Alternatively, a plurality of nozzles can be designed in one nozzle, that is, the plurality of nozzles are arranged side by side while referring to the existing multi-nozzle design, which is suitable for applications requiring a large number of nozzles, and each nozzle can be used differently. The materials, so some processing sites that require a large number of different materials are suitable for this technical solution. At this time, for example, five nozzles are provided, and three nozzles are provided in each nozzle, for a total of 15 nozzles, and 15 different printing materials can be used. Compared with the existing one, the advantages are obvious.

As a further improvement, as shown in Fig. 2, a distance adjusting device 4 is provided between the parallel shaft 31 and the vertical shaft 11. The distance adjusting device 4 includes an L-shaped stopper 41, a thread adjusting gap device 42 and a backing plate 43; both ends of the parallel shaft 31 are fixed to the L-shaped stopper 41, and the L-shaped stopper 41 is disposed between the vertical shaft 11 and the vertical shaft 11 The thread adjusting gap device 42, the gap between the L-shaped stopper 41 and the vertical shaft 11 is pressed with a backing plate 43. At the time of assembly, the gap between the L-shaped stopper ⁴ 1 and the vertical shaft 11 is adjusted by the thread adjusting gap device 42, and the gap is filled with the backing plate 43, and the backing plate 43 is preferably made of an extremely thin (millimeter) stainless steel plate. If an error occurs between the heights of the parallel shafts 31 during use, the distance adjusting means can be used to adjust the gap between the parallel shaft and the vertical axis, thereby eliminating the height difference between the parallel shafts 31.

As a further improvement, as shown in Fig. 3, a position adjusting device 5 is provided between the head 2 and the parallel shaft 31. The position adjusting device 5 includes an adapter plate 51, a fixing block 52 and a fixing bolt 53. The adapter plate 51 is fixed on the nozzle 2, and the fixing block 52 is sleeved on the parallel shaft 31. The fixing bolt 53 passes through the adapter plate 51 and is fixed. The block 52 is screwed, and the adapter plate 51 is provided with a long slotted hole that cooperates with the fixing bolt 53. During assembly, the position adjustment device 5 ensures the uniformity of the position of the plurality of nozzles during processing. In operation, when the working positions of the respective heads 2 are inconsistent, the position adjusting device 5 can also be used for adjustment. It should be noted that the distance adjusting device 4 and the position adjusting device 5 are mainly mature and stable in terms of cost performance and stability, and can achieve millimeter-level adjustment at a low economic cost. This has been able to meet the needs of most processing objects. However, in machining, the final precision of some products may need to be lower than the millimeter level. At this time, the above-mentioned distance adjusting device and position adjusting device can be designed as some adjusting devices with higher adjustment precision. These devices can be found in existing lathes, milling machines, planers, grinding machines, drill presses, boring machines, and numerically controlled machine tools, and are common technical means and common knowledge in the art, so these high precision adjustment means will not be described again. The description of the above technical solutions merely embodies the preferred technical solutions of the present invention, and is not intended to be exhaustive or to limit the invention to the disclosed forms. Other forms of technical solutions obtained by any person without creative work, regardless of changes in structure or form, are within the scope of the present invention.

Claims

claims

1. A multi-nozzle 3D printer, including no less than 1 nozzle (2) and a moving bracket (1), characterized in that, the moving bracket is fixed with no less than one horizontal movement device (3), each horizontal movement device A nozzle is fixed on the device, and the movable bracket moves vertically and longitudinally.

2. The multi-nozzle 3D printer according to claim 1, characterized in that the horizontal moving device includes a motor and a parallel shaft (31) driven by the motor, the nozzle is fixed on the parallel shaft, and both ends of the parallel shaft are connected with vertical axis (11).

3. The multi-nozzle 3D printer according to claim 2, characterized in that a distance adjustment device (4) is connected between the parallel axis and the vertical axis.

4. The multi-nozzle 3D printer according to claim 3, characterized in that the distance adjustment device includes an L-shaped stopper (41), a threaded gap adjustment device (42) and a backing plate (43); both ends of the parallel axis are fixed On the L-shaped block, a threaded gap adjustment device is provided between the L-shaped block and the vertical shaft, and a backing plate is pressed into the gap between the L-shaped block and the vertical shaft.

5. The multi-nozzle 3D printer according to claim 2, characterized in that a position adjustment device (5) is connected between the nozzle and the parallel axis.

6. The multi-nozzle 3D printer according to claim 5, characterized in that the position adjustment device includes an adapter plate (51), a fixing block (52) and a fixing bolt (53); the adapter plate is fixed on the nozzle head and fixed on the nozzle head. The block is sleeved on the parallel shaft, and the fixing bolts pass through the adapter plate and are threadedly connected to the fixed block. The adapter plate has long slotted holes that match the fixing bolts.

7. The multi-nozzle 3D printer according to any one of claims 1 to 6, characterized in that at least one nozzle is integrated on the nozzle head.