CN207028207U - A kind of 3D printer high accuracy feeding machanism - Google Patents
A kind of 3D printer high accuracy feeding machanism Download PDFInfo
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- CN207028207U CN207028207U CN201720935866.0U CN201720935866U CN207028207U CN 207028207 U CN207028207 U CN 207028207U CN 201720935866 U CN201720935866 U CN 201720935866U CN 207028207 U CN207028207 U CN 207028207U
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- screw rod
- material feed
- feed drum
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- piston
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Abstract
A kind of 3D printer high accuracy feeding machanism, including feed cartridge module and print head assembly；Material feed drum is packed in material feed drum mounting bracket vertically, and electronic worm type of reduction gearing is packed at the top of material feed drum mounting bracket, and screw rod is connected to worm gear center vertically；Piston is connected in screw rod bottom and in material feed drum；Abrasive rubber sealing ring is provided between piston and feed tube inner surface；Screw rod anti-rotation leading truck is packed at the top of electronic worm type of reduction gearing, which is provided with guide chute；Screw tip is equipped with anti-rotation sliding block and extends in guide chute；Printhead cylinder is connected with material feed drum by feeder sleeve；Spiral conveying blade is located in head cartridge body, and screw drives motor is connected with spiral conveying blade；Exhaust hole is offered on piston, exhaust hole internal thread is connected with closure；Graduated scale is labeled with screw rod anti-rotation leading truck；Printhead cylinder inner surface is provided with layer of silica gel, and spiral conveying blade is slidably matched with layer of silica gel sealing；The quantity for being fed cartridge module is for 1 or multiple.
Description
Technical field
The utility model belongs to 3D printing technique field, more particularly to a kind of 3D printer high accuracy feeding machanism.
Background technology
The 3D printing technique for being currently under the high-speed development period of 3D printing, particularly civil area also achieves considerable hair
Exhibition, including food 3D printing, BUILDINGS MODELS 3D printing and terra cotta 3D printing etc., the field being related to due to 3D printing is increasingly
Extensively, the species of 3D printing material is also very various, such as chocolate and syrup in food 3D printing, in BUILDINGS MODELS 3D printing
Resin and plastics, clay and composite earth in terra cotta 3D printing, and 3D printing material mentioned above have one altogether
The characteristics of same, that is, belong to high viscosity material.
Although developing comparatively fast in terms of the overall design of 3D printer, the feeding machanism for being attached to 3D printer is relative
Hysteresis, and at present using relatively broad for air pump drive-type syringe type feeding machanism, the gases at high pressure exported by air pump drive
Piston movement in dynamic syringe, and then the material in cylinder is squeezed out, it is embodied as 3D printer and printed material is continuously provided.
And air pump drive-type syringe type feeding machanism there is it is obvious the defects of, because the piston movement in syringe is by high
Press gas-powered, therefore need during 3D printing to maintain pressure constant, and in 3D printing pause or stopped process, it is necessary to
Reduce pressure maintains pressure constant simultaneously, but during pressure change, pressure oscillation is almost difficult to avoid that, and should be and stop originally
Only it is fed, but always has printed material and continue to drip, so as to reduces the precision of 3D printing.In addition, work as piston and barrel inside surface
When sealing is bad, it is desirable to maintain cylinder pressure constant by the very difficult of change, continue to drip so as to will also result in printed material
Fall, in turn result in the reduction of 3D printing precision.
Further, when adding printed material into syringe, air can also enter syringe with printed material, and these air
Also it is difficult to discharge syringe after piston returns dress, during 3D printing, printed material will be unable to avoid mixing bubble, and be mingled with
The printed material of bubble can also reduce the precision of 3D printing.
Utility model content
The problem of existing for prior art, the utility model provide a kind of 3D printer high accuracy feeding machanism, can
Precise and stable driving piston movement, it can effectively ensure that piston and be fed the sealing of tube inner surface, can avoid printing material
Bubble is mixed in material, 3D printing precision can be effectively improved.
To achieve these goals, the utility model adopts the following technical scheme that：A kind of 3D printer high accuracy feeding machine
Structure, including feed cartridge module and print head assembly, the feed cartridge module include material feed drum, material feed drum mounting bracket, piston, spiral shell
Bar, electronic worm type of reduction gearing and screw rod anti-rotation leading truck；The print head assembly includes printhead cylinder, helical feed leaf
Piece and screw drives motor；The material feed drum is packed in material feed drum mounting bracket vertically, and material feed drum bottom is discharging opening, material feed drum
Top is charging door；The electronic worm type of reduction gearing is packed at the top of material feed drum mounting bracket, electronic worm type of reduction gearing
Worm gear be in horizontal positioned state, the centre bore of worm gear is screwed hole, and the screw rod is connected in worm gear vertically by screwed hole
The heart；The piston is connected in the bottom of screw rod and in material feed drum, and piston is slidably matched with feed tube inner surface sealing, in work
Abrasive rubber sealing ring is added between plug and feed tube inner surface；The screw rod anti-rotation leading truck is packed in electronic worm and gear
At the top of decelerator, guide chute is vertically arranged with screw rod anti-rotation leading truck, anti-rotation sliding block is fixed with the screw tip,
Anti-rotation sliding block is extended in guide chute；The charging aperture of the printhead cylinder is located in the middle part of cylinder, the charging of printhead cylinder
Mouth is connected with the discharging opening of material feed drum by feeder sleeve, and the discharging opening of printhead cylinder is arranged on cylinder body bottom；The spiral
Conveying blade is located in head cartridge body, and spiral conveying blade is slidably matched with face seal in head cartridge body；The spiral shell
Rotation motor is packed at the top of printhead cylinder, and the motor shaft of screw drives motor passes through shaft coupling and spiral conveying blade
Central shaft is fixedly connected with.
Exhaust hole is offered on the piston, closure is connected with exhaust hole internal thread.
Graduated scale is labeled with the screw rod anti-rotation leading truck.
There is layer of silica gel in the inner surface setting of the printhead cylinder, spiral conveying blade is matched somebody with somebody with layer of silica gel sealing slip
Close.
The quantity of the feed cartridge module is 1 or multiple, and multiple feed cartridge modules by more feeder sleeves only with
One print head assembly is connected.
The beneficial effects of the utility model：
3D printer high accuracy feeding machanism of the present utility model, driving piston movement that can be precise and stable, Neng Gouyou
Effect ensures that piston with being fed the sealing of tube inner surface, can avoid mixing bubble in printed material, can effectively improve 3D and beat
Print precision.
Brief description of the drawings
Fig. 1 is 3D printer high accuracy feeding machanism structural representation of the present utility model；
In figure, 1-material feed drum, 2-material feed drum mounting bracket, 3-piston, 4-screw rod, 5-electronic worm type of reduction gearing,
6-screw rod anti-rotation leading truck, 7-printhead cylinder, 8-spiral conveying blade, 9-screw drives motor, 10-abrasive rubber
Sealing ring, 11-guide chute, 12-anti-rotation sliding block, 13-feeder sleeve, 14-shaft coupling, 15-exhaust hole, 16-closure,
17-graduated scale, 18-layer of silica gel.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of 3D printer high accuracy feeding machanism, including feed cartridge module and print head assembly, it is described
Feed cartridge module includes material feed drum 1, material feed drum mounting bracket 2, piston 3, screw rod 4, electronic worm type of reduction gearing 5 and screw rod anti-rotation
Leading truck 6；The print head assembly includes printhead cylinder 7, spiral conveying blade 8 and screw drives motor 9；The material feed drum
1 is packed in material feed drum mounting bracket 2 vertically, and the bottom of material feed drum 1 is discharging opening, and the top of material feed drum 1 is charging door；The electronic snail
Worm and gear decelerator 5 is packed in the top of material feed drum mounting bracket 2, and the worm gear of electronic worm type of reduction gearing 5 is in horizontal positioned state,
The centre bore of worm gear is screwed hole, and the screw rod 4 is connected to worm gear center by screwed hole vertically；The piston 3 is connected in spiral shell
The bottom of bar 4 and in the material feed drum 1, piston 3 is slidably matched with the sealing of the inner surface of material feed drum 1, in piston 3 with material feed drum 1
Abrasive rubber sealing ring 10 is added between surface；The screw rod anti-rotation leading truck 6 is packed in electronic worm type of reduction gearing 5 and pushed up
Portion, guide chute 11 is vertically arranged with screw rod anti-rotation leading truck 6, anti-rotation sliding block 12 is fixed with the top of screw rod 4, prevented
Turn sliding block 12 to extend in guide chute 11；The charging aperture of the printhead cylinder 7 is located in the middle part of cylinder, printhead cylinder 7
Charging aperture is connected with the discharging opening of material feed drum 1 by feeder sleeve 13, and the discharging opening of printhead cylinder 7 is arranged on cylinder body bottom；
The spiral conveying blade 8 is located in printhead cylinder 7, and spiral conveying blade 8 slides with the sealing of the inner surface of printhead cylinder 7
Coordinate；The screw drives motor 9 is packed in the top of printhead cylinder 7, and the motor shaft of screw drives motor 9 passes through shaft coupling 14
It is fixedly connected with the central shaft of spiral conveying blade 8.
Exhaust hole 15 is offered on the piston 3, closure 16 is connected with exhaust hole internal thread.
Graduated scale 17 is labeled with the screw rod anti-rotation leading truck 6.
There is layer of silica gel 18 in the inner surface setting of the printhead cylinder 7, spiral conveying blade 8 is slided with the sealing of layer of silica gel 18
It is dynamic to coordinate.
In order to meet the 3D printing needs of large scale product, the quantity of the feed cartridge module is no less than two, and multiple
Feed cartridge module is only connected by more feeder sleeves 13 with a print head assembly, and multiple feed cartridge modules can be simultaneously
Print head assembly is fed or is fed respectively.
Illustrate first use process of the present utility model below in conjunction with the accompanying drawings：
A kind of high viscosity printed material is selected first, and completes the charging work to material feed drum 1, and what is fed possesses step
It is as follows：Disconnect the connection of electronic worm type of reduction gearing 5 and material feed drum mounting bracket 2 first, then by electronic worm type of reduction gearing
5th, screw rod 4, piston 3 and screw rod anti-rotation leading truck 6 together unload as an entirety from material feed drum mounting bracket 2, then by standard
The printed material got ready is loaded into material feed drum 1；After printed material loads, closure 16 is unloaded from piston 3 first,
Then electronic worm type of reduction gearing 5, screw rod 4, piston 3 and screw rod anti-rotation leading truck 6 are returned again as an entirety and are attached to
On material feed drum mounting bracket 2, and piston 3 is put back into material feed drum 1 first, is then firmly pressed downward, and the air of the lower section of piston 3 is passed through
The all extruding discharges of exhaust hole 15, until not having air residual between piston 3 and printed material, now return closure 16 again
It is attached on exhaust hole 15, finally electronic worm type of reduction gearing 5 is fixed together again with material feed drum mounting bracket 2 again.
Start electronic worm type of reduction gearing 5, with the rotation of worm gear, screw rod 4 can be driven accurately to move down, moving down distance can
Read in real time by the graduated scale 17 on screw rod anti-rotation leading truck 6.With moving down for screw rod 4, piston 3 can be pressed down against supplying
Printed material in barrel 1, printed material are then entered in printhead cylinder 7 by feeder sleeve 13, now start screw drives electricity
Machine 9, and drive spiral conveying blade 8 to rotate, now can continuously it be discharged by the bottom discharge cause for gossip of printhead cylinder 7.
When print procedure needs to suspend or stopped, electronic worm type of reduction gearing 5 and screw drives motor only need to be stopped
9, after electronic worm type of reduction gearing 5 stops, because piston 3 passes through abrasive rubber sealing ring 10 and the inner surface shape of material feed drum 1
Into good sealing, be not in leakage, therefore effectively prevent printed material and continue to drip；And work as screw drives motor
After 9 stop, due to the presence of layer of silica gel 18, the sealing of spiral conveying blade 8 and the inner surface of printhead cylinder 7 can be effectively improved
Property, the drippage of printed material is further avoid, finally improves 3D printing precision.
Scheme in embodiment simultaneously is not used to limit scope of patent protection of the present utility model, all without departing from the utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the claims of this case.
Claims (5)
- A kind of 1. 3D printer high accuracy feeding machanism, it is characterised in that：Including feed cartridge module and print head assembly, the confession Barrel component includes material feed drum, material feed drum mounting bracket, piston, screw rod, electronic worm type of reduction gearing and screw rod anti-rotation leading truck； The print head assembly includes printhead cylinder, spiral conveying blade and screw drives motor；The material feed drum is packed in vertically In material feed drum mounting bracket, material feed drum bottom is discharging opening, is charging door at the top of material feed drum；The electronic worm type of reduction gearing is consolidated At the top of material feed drum mounting bracket, the worm gear of electronic worm type of reduction gearing is in horizontal positioned state, and the centre bore of worm gear is spiral shell Pit, the screw rod are connected to worm gear center by screwed hole vertically；The piston is connected in the bottom of screw rod and positioned at feed In cylinder, piston is slidably matched with feed tube inner surface sealing, and it is close to add abrasive rubber between piston and feed tube inner surface Seal；The screw rod anti-rotation leading truck is packed at the top of electronic worm type of reduction gearing, is set vertically in screw rod anti-rotation leading truck Guide chute is equipped with, is fixed with anti-rotation sliding block in the screw tip, anti-rotation sliding block is extended in guide chute；The printhead The charging aperture of cylinder is located in the middle part of cylinder, and the charging aperture of printhead cylinder is connected with the discharging opening of material feed drum by feeder sleeve, The discharging opening of printhead cylinder is arranged on cylinder body bottom；The spiral conveying blade is located in head cartridge body, and helical feed Blade is slidably matched with face seal in head cartridge body；The screw drives motor is packed at the top of printhead cylinder, spiral The motor shaft of motor is fixedly connected with by the central shaft of shaft coupling and spiral conveying blade.
- A kind of 2. 3D printer high accuracy feeding machanism according to claim 1, it is characterised in that：Opened on the piston Provided with exhaust hole, closure is connected with exhaust hole internal thread.
- A kind of 3. 3D printer high accuracy feeding machanism according to claim 1, it is characterised in that：In the screw rod anti-rotation Graduated scale is labeled with leading truck.
- A kind of 4. 3D printer high accuracy feeding machanism according to claim 1, it is characterised in that：In the head cartridge The inner surface setting of body has layer of silica gel, and spiral conveying blade is slidably matched with layer of silica gel sealing.
- A kind of 5. 3D printer high accuracy feeding machanism according to claim 1, it is characterised in that：The feed cartridge module Quantity be 1 or multiple, and multiple feed cartridge modules are only connected by more feeder sleeves with a print head assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935866.0U CN207028207U (en) | 2017-07-28 | 2017-07-28 | A kind of 3D printer high accuracy feeding machanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935866.0U CN207028207U (en) | 2017-07-28 | 2017-07-28 | A kind of 3D printer high accuracy feeding machanism |
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| Publication Number | Publication Date |
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| CN207028207U true CN207028207U (en) | 2018-02-23 |
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| CN201720935866.0U Active CN207028207U (en) | 2017-07-28 | 2017-07-28 | A kind of 3D printer high accuracy feeding machanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297244A (en) * | 2018-02-26 | 2018-07-20 | 江苏省海洋资源开发研究院(连云港) | A kind of new ceramics molding equipment based on 3D printing technique |
-
2017
- 2017-07-28 CN CN201720935866.0U patent/CN207028207U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297244A (en) * | 2018-02-26 | 2018-07-20 | 江苏省海洋资源开发研究院(连云港) | A kind of new ceramics molding equipment based on 3D printing technique |
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