阅读说明：本技术 一种3d打印机的多头打印机构 (Multi-head printing mechanism of 3D printer ) 是由 曹岩 寇啸溪 田春雷 于 2020-10-28 设计创作，主要内容包括：本发明公开了一种3D打印机的多头打印机构,包括基座,升降机构,所述升降机构设置于基座的上表面,移动机构,所述移动机构设置于升降机构的内侧,打印机构,所述打印机构安装于移动机构的中间位置,所述升降机构包括立柱,所述立柱的数量为四个,四个所述立柱分别沿上下方向设置于基座的上表面四角,齿轮,所述齿轮的数量为四个,四个所述齿轮分别与四个所述立柱的顶端通过轴承连接,四个所述齿轮的外壁底端延伸进立柱的内腔并与立柱的内腔底端通过轴承连接。该3D打印机的多头打印机构,可减小3D打印在进行作业时设备发生的抖动,避免机械运转不平稳,增强了打印机构的控制能力,增加了打印精度,降低了打印机构的造价,使打印机构的结构变得简单,更有利于进行推广。(The invention discloses a multi-head printing mechanism of a 3D printer, which comprises a base and a lifting mechanism, wherein the lifting mechanism is arranged on the upper surface of the base, a moving mechanism is arranged on the inner side of the lifting mechanism, the printing mechanism is arranged in the middle of the moving mechanism, the lifting mechanism comprises four upright columns, the four upright columns are respectively arranged at four corners of the upper surface of the base along the vertical direction, gears are arranged, the four gears are respectively connected with the top ends of the four upright columns through bearings, and the bottom ends of the outer walls of the four gears extend into the inner cavity of the upright columns and are connected with the bottom ends of the inner cavities of the upright columns through bearings. This bull printing mechanism of 3D printer can reduce the shake that 3D printed equipment emergence when carrying out the operation, avoids mechanical operation not steady, has strengthened printing mechanism's controllability, has increased the printing precision, has reduced printing mechanism's cost, makes printing mechanism's structure become simple, more is favorable to promoting.)

1. The utility model provides a bull printing mechanism of 3D printer which characterized in that includes:

a base (1);

the lifting mechanism (2), the said lifting mechanism (2) is set up in the upper surface of the base (1);

the moving mechanism (3), the said moving mechanism (3) is set up in the inboard of the lifting gear (2);

and the printing mechanism (4), wherein the printing mechanism (4) is arranged in the middle position of the moving mechanism (4).

2. The multi-head printing mechanism of the 3D printer according to claim 1, wherein: the lifting mechanism comprises:

the number of the upright columns (21) is four, and the four upright columns (21) are respectively arranged at four corners of the upper surface of the base (1) along the vertical direction;

the number of the gears (23) is four, the four gears (23) are respectively connected with the top ends of the four upright posts (21) through bearings, the bottom ends of the outer walls of the four gears (23) extend into the inner cavity of the upright posts (21) and are connected with the bottom ends of the inner cavities of the upright posts (21) through bearings, the bottom ends of the outer walls of the gears (23) are in interference fit with inner rings of the bearings, the bottom ends of the inner cavities of the upright posts (21) are fixedly connected with outer rings of the bearings, and the front gear (23) and the rear gear (23) are connected through chains;

the number of the first motors (22) is two, and the two first motors (22) are respectively positioned at the top ends of the two gears (23) in the left-right direction of the rear side and are in screw connection with the top ends of the two upright columns (21).

3. The multi-head printing mechanism of the 3D printer according to claim 1, wherein: the moving mechanism includes:

the number of the slide rails (31) is two, the two slide rails (31) are respectively positioned at the left side and the right side of the base (1), and the front end and the rear end of the outer wall of each slide rail (31) are respectively inserted into the inner cavity of the corresponding directional upright post (21);

the number of the second motors (32) is two, and the two second motors (32) are respectively positioned on the front sides of the two upright posts (21) and are in screw connection with the front sides of the two slide rails (31);

the number of the sliding plates (33) is two, and the sliding plates (33) are inserted into the inner cavity of the sliding rail (31);

the number of the first lead screws (36) is two, the first lead screws (36) are located in the inner cavity of the sliding rail (31), the front end and the rear end of the outer wall of each first lead screw (36) are respectively connected with the front end and the rear end of the inner cavity of the sliding rail (31) through bearings, the front end and the rear end of the outer wall of each first lead screw (36) are respectively in interference fit with an inner ring of each bearing, the front side and the rear side of the inner cavity of the sliding rail (31) are respectively fixedly connected with an outer ring of each bearing, the front side of the outer wall of each first lead screw (36) is in key connection with the output end of the second motor (32), and the first lead screws (36) are in threaded connection;

the number of the second lead screws (34) is two, the two second lead screws (34) are respectively positioned at the front end, the rear end, the left end and the right end of the inner side of the outer wall of the two sliding plates (33), the left side and the right side of the outer wall of the second lead screw (34) are respectively connected with the two sliding plates (33) through bearings, the left side and the right side of the outer wall of the second lead screw (34) are respectively in interference fit with an inner ring of the bearing, the inner sides of the two sliding plates (33) are respectively and fixedly connected with an outer ring of the bearing, the right sides of the outer walls of the two second lead screws (34) extend out of the right side of the outer wall of the sliding plates (33), and a printing mechanism (4) is arranged in the middle of the two;

the number of the first conical gears (35) is two, and the first conical gears (35) are in key connection with the right side of the outer wall of the second lead screw (34);

the third motor (37), the said third motor (37) is connected with right side screw of outer wall of the slide (33);

the number of the second bevel gears (38) is two, the two second bevel gears (38) are respectively connected with the front end and the rear end of the outer wall of the third motor (37) in a key mode, and the second bevel gears (38) are in meshed connection with the first bevel gears (35).

4. The multi-head printing mechanism of the 3D printer according to claim 1, wherein: the printing mechanism (4) includes:

the front side and the rear side of the outer wall of the shell (41) are respectively in threaded connection with the two second lead screws (34);

the conveying pipes (46), a plurality of said conveying pipes (46) link with cavity of the outer cover (41) along the upper and lower direction;

the heating grooves (42) are formed in the inner cavity of the shell (41);

the heating sheets (43), a plurality of the heating sheets (43) are respectively arranged between the two heating grooves (42);

the spray heads (44) are inserted into the bottom end of the inner cavity of the shell (41), and the bottom end of the outer wall of each spray head (44) extends out of the bottom end of the shell (41);

the springs (45) are positioned in the inner cavity of the shell (41) and are sleeved with the bottom end of the outer wall of the spray head (44).

5. The multi-head printing mechanism of the 3D printer according to claim 2 or 3, wherein: the shape of stand (21) inner chamber is the cross, both ends all are provided with the slider around the outer wall of slide rail (31), and the inner chamber of stand (21) is pegged graft with the slider looks adaptation at both ends around slide rail (31).

6. The multi-head printing mechanism of the 3D printer according to claim 4, wherein: and a high-temperature-resistant sealing ring is arranged at the top end of the outer wall of the spray head (44).

Technical Field

The invention relates to the technical field of 3D printing, in particular to a multi-head printing mechanism of a 3D printer.

Background

3D printing (3DP), one of the rapid prototyping technologies, also known as additive manufacturing, is a technology for constructing an object by layer-by-layer printing using an adhesive material such as powdered metal or plastic based on a digital model file, and 3D printing is generally implemented by a digital technical material printer, and is commonly used to manufacture models in the fields of mold manufacturing, industrial design, and the like, and is then gradually used for direct manufacturing of some products, and there are already parts printed using this technology, which are applied in the fields of jewelry, footwear, industrial design, construction, engineering and construction (AEC), automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and others;

3D printing is through computer control stack the printing material layer upon layer, finally becomes the process in kind to the blue picture on the computer, and 3D prints equipment often can take place the shake when carrying out the operation, and machinery operates unstably, and is poor to printing mechanism's controllability, influences the printing precision, and in addition, printing mechanism's cost is higher, and the structure is complicated, is unfavorable for promoting.

Disclosure of Invention

The invention aims to provide a multi-head printing mechanism of a 3D printer, which at least solves the problems of poor control capability of the printing mechanism and complex structure and high cost of the printing mechanism in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bull printing mechanism of 3D printer, includes the base, elevating system sets up in the upper surface of base, moving mechanism sets up in elevating system's inboard, printing mechanism installs in moving mechanism's intermediate position.

Preferably, elevating system includes the stand, the quantity of stand is four, four the stand sets up in the upper surface four corners of base along upper and lower direction respectively, the gear, the quantity of gear is four, four the gear respectively with four the top of stand is passed through the bearing and is connected, four the outer wall bottom of gear extends into the inner chamber of stand and passes through the bearing with the inner chamber bottom of stand and be connected, the outer wall bottom interference fit of gear has the inner ring of bearing, the outer loop of the inner chamber bottom fixedly connected with bearing of stand, first motor, the quantity of first motor is two, two first motor is located the rear side left and right sides direction two respectively the top of gear and with two the top screw connection of stand.

Preferably, the moving mechanism comprises two sliding rails, the two sliding rails are respectively positioned at the left side and the right side of the base, the front end and the rear end of the outer wall of each sliding rail are respectively inserted into the inner cavities of the upright posts in the corresponding directions, the two second motors are respectively positioned at the front sides of the two upright posts and connected with the front side screws of the two sliding rails, the two sliding plates are inserted into the inner cavities of the sliding rails, the first lead screws are respectively positioned in the inner cavities of the sliding rails, the front end and the rear end of the outer wall of each first lead screw are respectively connected with the front end and the rear end of the inner cavity of each sliding rail through bearings, the front end and the rear end of the outer wall of each first lead screw are respectively in interference fit with the inner rings of the bearings, and the front end and the rear end of the inner cavity of each sliding rail are fixedly connected with the outer rings of the bearings, the front side of the outer wall of the first screw rod is connected with the output end of a second motor in a key mode, the first screw rod is in threaded connection with a sliding plate, the number of the second screw rods is two, the two second screw rods are respectively positioned at the front end, the rear end, the left end and the right end of the inner side of the outer wall of the two sliding plates, the left side and the right side of the outer wall of the second screw rod are respectively connected with the two sliding plates through bearings, the left side and the right side of the outer wall of the second screw rod are respectively in interference fit with an inner ring of the bearing, the inner sides of the two sliding plates are respectively and fixedly connected with an outer ring of the bearing, the right sides of the outer walls of the two second screw rods extend out of the right side of the outer wall of the sliding plate, a printing mechanism, first conical gears and the number of the two first conical gears are arranged at the middle positions, the third motor is connected with the right side of the outer wall of the sliding plate through screws, the number of the second bevel gears is two, the second bevel gears are connected with the front end and the rear end of the outer wall of the third motor through keys respectively, and the second bevel gears are meshed with the first bevel gears.

Preferably, the shell, both sides respectively with two around the outer wall of shell the second lead screw spiro union, conveyer pipe, a plurality of the conveyer pipe is connected with the inner chamber of shell along upper and lower direction, adds hot groove, a plurality of the inner chamber of shell is seted up to the hot groove, heating plate, a plurality of the heating plate sets up respectively between two hot grooves, shower nozzle, a plurality of the shower nozzle is pegged graft with the inner chamber bottom of shell, and the outer wall bottom of shower nozzle extends the bottom of shell, spring, a plurality of the spring is located the inner chamber of shell and cup joints with the outer wall bottom of shower nozzle.

Preferably, the shape of stand inner chamber is the cross, both ends all are provided with the slider around the outer wall of slide rail, and the inner chamber of stand is pegged graft with the slider looks adaptation at both ends around the slide rail.

Preferably, the top end of the outer wall of the spray head is provided with a high-temperature-resistant sealing ring.

The multi-head printing mechanism of the 3D printer has the beneficial effects that:

the invention can control the slide rail to move up and down stably along the inner cavity of the upright post by driving the gear to rotate by the first motor in the lifting mechanism, can control the slide plate to move back and forth along the inner cavity of the slide rail by driving the first screw rod to rotate by the second motor of the moving mechanism, can control the slide plate to move back and forth along the inner cavity of the slide rail by rotating the first screw rod in the positive and negative directions, can drive the second screw rod to rotate by driving the first bevel gear by the third motor so as to drive the printing mechanism to move along the second screw rod, can push the nozzle to move downwards to be connected with a printing surface by raw materials and pressure provided by a conveying pipe in the printing mechanism, can control the discharge amount and the expansion and contraction of the nozzle by controlling the pressure, can reduce the shake of equipment during the 3D printing operation, avoid unstable mechanical operation, enhance the control capability of the printing mechanism, increase, is more beneficial to popularization.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a front sectional view of the lifting mechanism of FIG. 1;

FIG. 3 is a front sectional view of the moving mechanism of FIG. 1;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

fig. 5 is a front sectional view of the printing mechanism of fig. 1.

In the figure: 1. the printing device comprises a base, 2, a lifting mechanism, 3, a moving mechanism, 4, a printing mechanism, 21, a stand column, 22, a first motor, 23, a gear, 31, a slide rail, 32, a second motor, 33, a slide plate, 34, a second lead screw, 35, a first bevel gear, 36, a first lead screw, 37, a third motor, 38, a second bevel gear, 41, a shell, 42, a heating groove, 43, a heating sheet, 44, a spray head, 45, a spring, 46 and a conveying pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a bull printing mechanism of 3D printer, includes base 1, elevating system 2, moving mechanism 3 and printing mechanism 4, and elevating system 2 sets up in the upper surface of base 1, and moving mechanism 3 sets up in elevating system 2's inboard, and printing mechanism 4 installs in moving mechanism 4's intermediate position.

As a preferable scheme, further, the lifting mechanism includes two first motors 22, two first motors 22 and gears 23, the number of the four upright columns 21 is four, the four upright columns 21 are respectively arranged at four corners of the upper surface of the base 1 along the up-down direction, the number of the gears 23 is four, the four gears 23 are respectively connected with the top ends of the four upright columns 21 through bearings, the bottom ends of the outer walls of the four gears 23 extend into the inner cavity of the upright column 21 and are connected with the bottom end of the inner cavity of the upright column 21 through bearings, the bottom ends of the outer walls of the gears 23 are in interference fit with inner rings of the bearings, the bottom ends of the outer walls of the gears 23 are provided with threads, the rotation of the through gears 23 causes the slide rail 31 to stably move up and down along the inner cavity of the upright column 21, the bottom ends of the inner cavity of the upright column 21 are fixedly connected with the outer rings of the bearings, the two first motors, the first motor 22 and the second motor 32 are assembled by using commercially available external components that can precisely control the rotation speed and direction.

Preferably, the moving mechanism includes two sliding rails 31, two second motors 32, two sliding plates 33, two second lead screws 34, two first bevel gears 35, two first lead screws 36, two third motors 37, and two second bevel gears 38, the two sliding rails 31 are respectively located on the left and right sides of the base 1, the front and rear ends of the outer wall of the sliding rail 31 are respectively inserted into the inner cavities of the upright posts 21 in the corresponding direction, the number of the second motors 32 is two, the second motors 32 should be biaxial motors, and are assembled and used by using outer members which are commonly used in the market and can accurately control the rotating speed and the direction, the two second motors 32 are respectively located on the front sides of the two upright posts 21 and are connected with the front side screws of the two sliding rails 31, the number of the two sliding plates 33 is inserted into the inner cavities of the sliding rails 31, the number of the first lead screws 36 is two, the first lead screws 36 are located in the inner cavities of the sliding rails 31, the front end and the rear end of the outer wall of the first lead screw 36 are respectively connected with the front end and the rear end of the inner cavity of the slide rail 31 through bearings, the front end and the rear end of the outer wall of the first lead screw 36 are respectively in interference fit with inner rings of the bearings, the front side and the rear side of the inner cavity of the slide rail 31 are respectively fixedly connected with outer rings of the bearings, the front side of the outer wall of the first lead screw 36 is connected with the output end of the second motor 32 through a key, the first lead screw 36 is in threaded connection with the slide plates 33, the number of the second lead screws 34 is two, the two second lead screws 34 are respectively positioned at the front end, the rear end, the left side and the right side of the outer wall of the two slide plates 33, the left side and the right side of the outer wall of the second lead screw 34 are respectively connected with the two side slide plates 33 through bearings, the inner rings of the bearings are in interference fit with the left side and, the number of the first conical gears 35 is two, the first conical gears 35 are in key connection with the right side of the outer wall of the second lead screw 34, the third motor 37 is in screw connection with the right side of the outer wall of the sliding plate 33, the number of the second conical gears 38 is two, the two second conical gears 38 are in key connection with the front end and the rear end of the outer wall of the third motor 37 respectively, and the second conical gears 38 are in meshed connection with the first conical gears 35.

As a preferable scheme, further, a housing 41, heating grooves 42, heating plates 43, nozzles 44, a spring 45 and delivery pipes 46, wherein the front and rear sides of the outer wall of the housing 41 are respectively screwed with the two second lead screws 34, the delivery pipes 46 are connected with the inner cavity of the housing 41 along the up-down direction, the heating grooves 42 are arranged in the inner cavity of the housing 41, the heating plates 43 are respectively arranged between the two heating grooves 42, the heating plates 43 are assembled and used by adopting market common external members capable of controlling heating temperature, the nozzles 44 are inserted into the bottom end of the inner cavity of the housing 41, the bottom end of the outer wall of the spray heads 44 extends out of the bottom end of the casing 41, the apertures of the plurality of spray heads 44 are designed according to different nozzles with different shapes from large to small, in order to meet the working requirement, a plurality of springs 45 are positioned in the inner cavity of the shell 41 and are sleeved with the bottom end of the outer wall of the spray head 44, and the spray head 44 moving downwards can be reset through the springs 45.

As a preferred scheme, furthermore, the shape of the inner cavity of the upright post 21 is cross-shaped, the front end and the rear end of the outer wall of the slide rail 31 are both provided with slide blocks, the inner cavity of the upright post 21 is inserted into the slide blocks at the front end and the rear end of the slide rail 31 in a matching manner, the slide rail 31 is stably moved along the inner cavity of the upright post 21 through the slide blocks, and the bottom end of the outer wall of the gear 23 and the first lead screw 36 are installed in a staggered manner through the cross-shaped slide blocks arranged at the.

Preferably, a high temperature-resistant sealing ring is disposed at the top end of the outer wall of the nozzle 44, so that the nozzle 44 can move up and down along the inner cavity of the housing 41 and prevent the raw material from leaking.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

The power is switched on, the first motor 22, the second motor 37 and the third motor 37 are respectively controlled to rotate by an external controller, the printing mechanism 4 is controlled to print, the gear 23 is driven to rotate by the first motor 22, the gear 23 at the front side is driven to rotate by a chain, the slide rail 31 is driven to move up and down along the inner cavity of the upright post 21 by the rotation of the gear 23, the first lead screw 36 is driven to rotate by the second motor 32, the slide plate 33 moves back and forth along the inner cavity of the slide rail 31, the second bevel gear 38 is driven to rotate by the third motor 37, the first bevel gear 35 drives the second lead screw 34 to rotate, the moving mechanism 4 moves left and right along the second lead screw 34 by the rotation of the second lead screw 34, when printing is needed, the raw material is conveyed into the inner cavity of the heating groove 42 by the conveying pipe 46, the raw material in the heating groove 42 is heated and melted by the heating sheet 43, the raw materials melts the back because pressure gets into the shower nozzle 44 that needs to use in, pressure pushes down shower nozzle 44 and compresses spring 45, and from shower nozzle 44 blowout after pressure reachs a definite value to print, the device simple structure uses the stability control precision height, and the practicality is strong, is favorable to the popularization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.