CN209257494U - 3D printer transmission mechanism - Google Patents

3D printer transmission mechanism Download PDF

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Publication number
CN209257494U
CN209257494U CN201821680205.9U CN201821680205U CN209257494U CN 209257494 U CN209257494 U CN 209257494U CN 201821680205 U CN201821680205 U CN 201821680205U CN 209257494 U CN209257494 U CN 209257494U
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China
Prior art keywords
slide rail
linear slide
printing
sliding block
stepper motor
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Active
Application number
CN201821680205.9U
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Chinese (zh)
Inventor
李明丽
朱兴建
朱嘉骊
朱骏皓
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Yunnan Sandi Technology Co Ltd
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Yunnan Sandi Technology Co Ltd
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Priority to CN201821680205.9U priority Critical patent/CN209257494U/en
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Abstract

The utility model belongs to 3D printing technique field, specially a kind of 3D printer transmission mechanism, the mechanism includes bracket and the mobile platform and linear slide rail that are fixed on bracket, it is characterized by: mobile platform includes support plate and belt gear, support plate upper surface covers belt, belt pulley is arranged in the belt both ends of closure, and side belt pulley is driven by stepper motor;Linear slide rail is arranged in mobile platform two sides, and matched sliding block is arranged on linear slide rail, and sliding block is coupled with the stepper motor for being located at bottom with the line or chain that are closed;The stepping motor rotating shaft is equipped with driving wheel, and linear slide rail top is pivotally connected driven wheel, and driven wheel, driving wheel and sliding block are synchronous with stepper motor movement;Two side slides are connect by connecting rod with printing material extrusion device.The transmission mechanism clever structure, printing is more preferably fast accurate, and creative being printed using inclination overcomes the problems, such as that the workpiece with cavity or cantilever design is collapsed or deformed.

Description

3D printer transmission mechanism
Technical field
The invention belongs to 3D printing technique field, specially a kind of 3D printer transmission mechanism.
Background technique
3D printer, i.e. 3 D-printing, are one kind of rapid prototyping technology, it is based on a digital model file, With adhesive materials such as powdery metal or plastics, the technology of object is constructed by layer-by-layer printing.Past, it was normal It is used for modeling in fields such as mold manufacture, industrial designs, is now increasingly used for the direct manufacture of some workpiece.
The existing 3D printer equipment kind of drive is broadly divided into three kinds: XYZ type, CoreXY type and trigonometric expression parallel arm knot Structure.The transmission of three axis of the characteristics of XYZ type 3D printer is independent mutually, and three axis are respectively by three stepper motor independent controls; CoreXY structure uses XY linkage structure, and XY axis is all that two stepper motor cooperations are driven;And trigonometric expression parallel arm Structure controls the mechanical structure of movement of the target in X, Y, Z axis by a series of parallelogram of interconnections.
As the improvement of XYZ type printer, the entitled Prusa i3's that is designed and produced by Bath university Mechanical Academy Mobile platform type 3D printer structure, main body is the movement that a rectangle portal frame is responsible for print head Z axis and Y direction, another Part is the movement that print platform is also responsible for X-direction simultaneously.There is the structure open by design to facilitate upgrading hardware or repair Reason maintenance, printing workpiece also facilitate taking-up;Additionally, due to using double Z axis motors are arranged on gantry frame structure, print head is mobile more Add stabilization, but the shortcomings that printer is also apparent from: the assembly precision of portal frame is lower to cause its printing precision lower;Except this it Outside, since Y-axis and Z axis use motor independent control, print speed is slower.
On the other hand, the discharge port of the mobile platform type 3D printer structure printing material extrusion device of Prusa i3 vertically to Under, i.e., it successively prints in the horizontal direction ultimately constructed at complete workpiece.But when production has cavity or cantilever design, n-th Layer plane is not fully overlapped with the (n+1)th layer plane, cause not intersection bottom cause to collapse or deform without supporting point, influence The precision of workpiece.Existing 3D printer transmission mechanism simultaneously can not overcome the defect, only be supported by being arranged below n+1 layers The deformation problems of mold solution workpiece.
Summary of the invention
For Prusa i3 structure there are the above problem, the present invention proposes a kind of new 3D printer transmission mechanism.
3D printer transmission mechanism of the invention, it is characterised in that the mechanism include the mobile platform that is fixed on bracket and Linear slide rail:
Mobile platform includes support plate and belt gear, and support plate upper surface covers belt, the belt both ends of closure Belt pulley is set, and side belt pulley is driven by stepper motor;Linear slide rail is arranged in mobile platform two sides, on linear slide rail setting with Cooperation sliding block, sliding block be located at bottom stepper motor coupled with the line or chain that are closed;The stepping motor rotating shaft It is equipped with driving wheel, linear slide rail top is pivotally connected driven wheel, and driven wheel, driving wheel and sliding block are synchronous with stepper motor movement;Two Side slide is connect by connecting rod with printing material extrusion device.In use, the linkage of two linear slide rails drives printing material extrusion device in Y It is moved on axis and Z axis, the movement on X axis is realized by mobile platform;It is also resided in using the advantage of mobile platform, printing is completed Workpiece is moved at belt pulley simultaneously automatic demoulding of turning back with belt afterwards, and the belt position below linear slide rail continues new beat Print task realizes continuous printing.
For the stability for enhancing printing material extrusion device, two sliding blocks with that two are arranged between printing material extrusion device is parallel Connecting rod, four connecting rods are located at the corner location of printing material extrusion device, and printing material is kept to squeeze out direction and linear slide rail cloth It is consistent always to set direction.
Contact position is provided with steel ball between each linear slide rail and sliding block.Make nothing between sliding block and linear slide rail by steel ball Limit rolls circulation, and printing material extrusion device can move linearly with high precision easily along sliding rail, since frictional force subtracts significantly It is few, it prints more preferably accurate.
More preferably, linear slide rail and bracket are hinged, and the hinged place of bracket is additionally provided with three crotch, each point of three crotch Through-hole is provided in branch;Corresponding, through-hole is arranged in linear slide rail corresponding position, and linear slide rail connect solid with three crotch with fastener It is fixed.
As preferred forms of the invention, each branch of three crotch with horizontal plane angle be respectively 45 °, 90 ° and 135°.When needing to print the workpiece with cavity or cantilever design, 3D printing is carried out along 45 ° or 135 ° slices after modeling, is utilized The material of printing shaping is not easy to collapse or deform to support the material protruding parts newly printed to be supported.
After inclination printing, printing material extrusion device exists simultaneously the movement of Y-axis, Z axis and X-axis, at this time can be according to inclining Shift length of the movement of rake angle independent control mobile platform to compensate X-axis, the opposite transmission mechanism of three-shaft linkage control System is easier to realize.
The 3D printer transmission mechanism is suitable for the 3D printer equipment of ABS, PLA, PVA hot melt material.
3D printer transmission mechanism of the invention, clever structure are printed more preferably quick by the way of Y-axis and Z-axis linkage Precisely, existing Prusa i3 fault of construction is overcome.In addition, creative is overcome using inclination printing with cavity or cantilever The problem of workpiece of structure is collapsed or is deformed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the transmission mechanism.
Fig. 2 is the side view of the transmission mechanism.
Wherein, mobile platform 1, linear slide rail 2, stepper motor 3, connecting rod 4, printing material extrusion device 5, three crotch 6.
Specific embodiment
Embodiment 1: 3D printer transmission mechanism of the invention, it is characterised in that the mechanism includes bracket and is fixed on bracket On mobile platform 1 and linear slide rail 2: mobile platform 1 include support plate and belt gear, support plate upper surface cover skin Belt pulley is arranged in the belt both ends of band, closure, and side belt pulley is driven by stepper motor 3;The setting of 1 two sides of mobile platform is linear sliding Rail 2, matched sliding block is arranged on linear slide rail 2, and sliding block is joined with the stepper motor 3 for being located at bottom with the line of closure or chain It connects;3 shaft of stepper motor is equipped with driving wheel, and 2 top of linear slide rail is pivotally connected driven wheel, driven wheel, driving wheel and cunning Block is synchronous with the movement of stepper motor 3;Two side slides are connect by connecting rod 4 with printing material extrusion device 5.In use, two is linear sliding The linkage of rail 2 drives printing material extrusion device 5 to move in Y-axis and Z axis, and the movement on X axis is realized by mobile platform 1;It adopts It is also resided in the advantage of mobile platform 1, workpiece is moved at belt pulley simultaneously automatic demoulding of turning back with belt after the completion of printing, is located at The belt position of 2 lower section of linear slide rail continues new print out task, realizes continuous printing.For enhancing printing material extrusion device 5 Stability, two sliding blocks are located at printing material with two parallel connecting rods 4, four connecting rods 4 are arranged between printing material extrusion device 5 The corner location of extrusion device 5 keeps printing material extrusion direction and 2 arranged direction of linear slide rail consistent always.Each linear cunning Contact position is provided with steel ball between rail 2 and sliding block.Make infinite scroll circulation between sliding block and linear slide rail 2 by steel ball, prints Material extrusion device 5 can move linearly with high precision easily along sliding rail, and since frictional force greatly reduces, printing is more preferably smart It is quasi-.
Embodiment 2: 3D printer transmission mechanism of the invention, it is characterised in that the mechanism includes bracket and is fixed on bracket On mobile platform 1 and linear slide rail 2:
Mobile platform 1 includes support plate and belt gear, and support plate upper surface covers belt, the belt both ends of closure Belt pulley is set, and side belt pulley is driven by stepper motor 3;The hinged linear slide rail 2 in 1 two sides of mobile platform, the hinged place of bracket Be additionally provided with three crotch 6, each branch of three crotch 6 is respectively 45 °, 90 ° and 135 ° with horizontal plane angle, three crotch 6 it is each Through-hole is provided in branch;Corresponding, through-hole is arranged in 2 corresponding position of linear slide rail, and linear slide rail 2 is connected with three crotch 6 with fastener Connect fixation;Matched sliding block is set on linear slide rail 2, and sliding block is with the stepper motor 3 positioned at bottom with the line or chain of closure Item connection;3 shaft of stepper motor is equipped with driving wheel, and 2 top of linear slide rail is pivotally connected driven wheel, driven wheel, driving wheel And sliding block is synchronous with the movement of stepper motor 3;Two side slides are connect by connecting rod 4 with printing material extrusion device 5.In use, two lines Property the linkage of sliding rail 2 drive printing material extrusion device 5 to move in Y-axis and Z axis, the movement on X axis is real by mobile platform 1 It is existing;It is also resided in using the advantage of mobile platform 1, workpiece is moved at belt pulley with belt and turns back and take off automatically after the completion of printing Mould, the belt position positioned at 2 lower section of linear slide rail continue new print out task, realize continuous printing.It is squeezed out for enhancing printing material The stability of device 5, two sliding blocks distinguish position with two parallel connecting rods 4, four connecting rods 4 are arranged between printing material extrusion device 5 In the corner location of printing material extrusion device 5, keep printing material extrusion direction and 2 arranged direction of linear slide rail consistent always.Respectively Contact position is provided with steel ball between a linear slide rail 2 and sliding block.It is followed between sliding block and linear slide rail 2 as infinite scroll by steel ball Ring, printing material extrusion device 5 can move linearly with high precision easily along sliding rail, since frictional force greatly reduces, printing More preferably precisely.

Claims (5)

1.3D printer transmission mechanism, it is characterised in that the mechanism include bracket and the mobile platform being fixed on bracket (1) and Linear slide rail (2): mobile platform (1) includes support plate and belt gear, and support plate upper surface covers belt, the skin of closure Belt pulley is arranged in band both ends, and side belt pulley is driven by stepper motor (3);Linear slide rail (2) are arranged in mobile platform (1) two sides, Matched sliding block is set on linear slide rail (2), and sliding block is joined with the stepper motor (3) for being located at bottom with the line of closure or chain It connects;Stepper motor (3) shaft is equipped with driving wheel, and linear slide rail (2) top is pivotally connected driven wheel, driven wheel, driving wheel And sliding block is synchronous with stepper motor (3) movement;Two side slides are connect by connecting rod (4) with printing material extrusion device (5).
2. 3D printer transmission mechanism as described in claim 1, it is characterised in that two sliding blocks and printing material extrusion device (5) Between two parallel connecting rods (4) are set, four connecting rods (4) are located at the corner location of printing material extrusion device (5), and holding is beaten Print material squeezes out direction and linear slide rail (2) arranged direction is consistent always.
3. 3D printer transmission mechanism as described in claim 1, it is characterised in that contacted between each linear slide rail (2) and sliding block Place is provided with steel ball.
4. 3D printer transmission mechanism as described in claim 1, it is characterised in that linear slide rail (2) is hinged, branch with bracket The hinged place of frame is additionally provided with three crotch (6), is provided with through-hole in each branch of three crotch (6);It is corresponding, linear slide rail (2) through-hole is arranged in corresponding position, and linear slide rail (2) is connected and fixed with three crotch (6) with fastener.
5. 3D printer transmission mechanism as claimed in claim 4, it is characterised in that three crotch (6) each branch with horizontal face angle Degree is respectively 45 °, 90 ° and 135 °.
CN201821680205.9U 2018-10-17 2018-10-17 3D printer transmission mechanism Active CN209257494U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821680205.9U CN209257494U (en) 2018-10-17 2018-10-17 3D printer transmission mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821680205.9U CN209257494U (en) 2018-10-17 2018-10-17 3D printer transmission mechanism

Publications (1)

Publication Number Publication Date
CN209257494U true CN209257494U (en) 2019-08-16

Family

ID=67557879

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821680205.9U Active CN209257494U (en) 2018-10-17 2018-10-17 3D printer transmission mechanism

Country Status (1)

Country Link
CN (1) CN209257494U (en)

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