CN210705238U - Extrusion type slurry 3D printer special fixture - Google Patents
Extrusion type slurry 3D printer special fixture Download PDFInfo
- Publication number
- CN210705238U CN210705238U CN201921130758.1U CN201921130758U CN210705238U CN 210705238 U CN210705238 U CN 210705238U CN 201921130758 U CN201921130758 U CN 201921130758U CN 210705238 U CN210705238 U CN 210705238U
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- Prior art keywords
- groove
- push rod
- fixed block
- notch
- linear electric
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 36
- 239000002002 slurry Substances 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 14
- 238000007639 printing Methods 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 229920000747 poly(lactic acid) Polymers 0.000 description 4
- 239000004626 polylactic acid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 238000010146 3D printing Methods 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a special fixture for an extrusion type slurry 3D printer, which comprises a fixture body, a first fixed block, a second fixed block and a third fixed block; the front wall surface of the clamp body is provided with a first containing cavity and a second containing cavity from top to bottom, so that the clamp body is provided with a top plate, a middle plate and a bottom plate; the front end of the top plate of the clamp body is provided with a first notch matched with the shape of the first fixed block; the front end of the middle plate of the clamp body is provided with a second notch matched with the shape of the second fixed block; the front end of the bottom plate of the clamp body is provided with a third notch matched with the shape of the third fixed block. This special fixture not only can carry out the clamping with the extruding means who extrudes formula thick liquids 3D printer fixed, can realize extruding means's quick assembly disassembly and change through three fixed block moreover, can not influence the precision because of dismouting many times, has improved printing efficiency. And the sizes of the three fixed blocks can be adjusted to adapt to the extrusion mechanisms of different models.
Description
Technical Field
The utility model belongs to the technical field of the 3D printer, specifically an extrude formula thick liquids 3D printer special fixture.
Background
The extrusion mechanism of the slurry 3D printer is divided into a plunger type and an air pressure type, the plunger type extrusion mechanism mainly comprises a linear electric push rod and a material cylinder, and the linear electric push rod drives a piston rod of the material cylinder to move downwards so as to extrude slurry; the air pressure type extrusion mechanism mainly comprises an air pump and an injector, the air pump is connected with an adapter of the injector through an air duct, air pressure generated by the work of the air pump enters the injector through the air duct, and slurry is pushed downwards to extrude the slurry.
The printing precision is determined by the weight of the printing device of the paste 3D printer and the clamping of the extruding mechanism, and the printing device is heavier, the more difficult the printing device moves on the Z axis of the 3D printer is, and the lower the printing precision is; the more stable the extrusion mechanism is clamped, the smaller the reaction force applied in the extrusion process is, and the higher the printing precision is.
The document with the application number of 201910006537.1 discloses a slurry extrusion device based on a micro-flow extrusion process and a control method thereof, wherein the extrusion device adopts a clamp with a one-plane L-shaped structure to clamp a charging barrel and a linear electric push rod, and when thrust is generated between the linear electric push rod and the charging barrel, the clamp is obviously deformed under the action of bending moment; in addition, the fixing position of the charging barrel is connected by bolts, so that the charging barrel is complex to assemble and disassemble; when the charging barrel is replaced for multiple times, the bolts need to be disassembled and assembled for multiple times, so that the bolts are loosened, and the printing precision is influenced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model discloses the technical problem who plans to solve provides an extrude formula thick liquids 3D printer special fixture.
The technical scheme for solving the technical problems of the utility model is to provide a special clamp for an extrusion type slurry 3D printer, which is characterized in that the special clamp comprises a clamp body, a first fixed block, a second fixed block and a third fixed block;
the front wall surface of the clamp body is provided with a first containing cavity and a second containing cavity from top to bottom, so that the clamp body is provided with a top plate, a middle plate and a bottom plate; the front end of the top plate of the clamp body is provided with a first notch matched with the shape of the first fixed block; the front end of the middle plate of the clamp body is provided with a second notch matched with the shape of the second fixed block; the front end of the bottom plate of the clamp body is provided with a third notch matched with the shape of a third fixed block;
the first fixed block is of a straight quadrangular prism structure with an isosceles trapezoid bottom surface; when the linear electric push rod is used, the surface formed by the upper bottom of the isosceles trapezoid is the upper surface of the first fixing block, the isosceles trapezoid is detachably arranged in the first notch, and the lower surface of the first fixing block is contacted with the end part of the linear electric push rod;
the second fixed block adopts a structure that the bottom surface is an isosceles trapezoid quadrangular prism and is provided with a U-shaped groove matched with the shell of the linear electric push rod; when the linear electric push rod is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the second fixed block, the isosceles trapezoid is detachably arranged in the second notch, and the U-shaped groove is matched with the shell of the linear electric push rod;
the third fixed block adopts a structure that the bottom surface is an isosceles trapezoid quadrangular prism and is provided with an arc-shaped groove matched with the shell of the charging barrel; when the charging barrel is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the third fixing block, the isosceles trapezoid is detachably mounted in the third notch, and the arc-shaped groove is matched with the shell of the charging barrel.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the clamp body adopts a cavity structure with an opening on one side, so that the phenomenon that the special clamp is deformed under the action of bending moment due to the reverse acting force generated in the process of pushing the piston rod of the charging barrel to extrude the slurry by the linear electric push rod is avoided, and the printing precision is improved.
2. This special fixture not only can carry out the clamping with the extruding means who extrudes formula thick liquids 3D printer fixed, can realize extruding means's quick assembly disassembly and change through three fixed block moreover, can not influence the precision because of dismouting many times, has improved printing efficiency. And the sizes of the three fixed blocks can be adjusted to adapt to the extrusion mechanisms of different models.
3. The special fixture is simultaneously suitable for a plunger type extrusion mechanism and an air pressure type extrusion mechanism of the extrusion type slurry 3D printer, and the cost is reduced.
4. The mounting groove of feed cylinder end ear inlays in the lateral wall about the anchor clamps body, has shortened special fixture's width, has reduced special fixture's volume, and simple structure is compact, has reduced the load of extruding formula thick liquids 3D printer Z axle slide rail simultaneously, has improved the printing precision.
5. This special fixture adopts PLA (polylactic acid) material to make, and intensity is high, and light in weight has further reduced the load of extruding formula thick liquids 3D printer Z axle slide rail, has improved the printing precision.
Description of the drawings:
FIG. 1 is an axial view of the overall structure of the special fixture of the present invention;
fig. 2 is a schematic structural view of the clamp body of the present invention;
FIG. 3 is a schematic view of the installation of the special fixture and the plunger type extruding mechanism of the slurry 3D printer according to the present invention;
FIG. 4 is a view showing a state of use of the special fixture of the present invention;
fig. 5 is a schematic structural view of the first fixing block of the present invention;
fig. 6 is a schematic structural view of a second fixing block of the present invention;
fig. 7 is a schematic structural view of a third fixing block of the present invention;
fig. 8 is an installation schematic diagram of the special fixture and the pneumatic extrusion mechanism of the slurry 3D printer according to the present invention;
wherein, 1, the clamp body; 2. a first notch; 3. a first through groove; 4. a second through groove; 5. a motor fixing groove; 6. a push rod fixing groove; 7. a second notch; 8. mounting holes; 9. a groove; 10. a material barrel fixing groove; 11. a third notch; 12. a first cavity; 13. a second cavity; 14. a first fixed block; 15. a second fixed block; 16. a third fixed block; 17. a linear electric push rod; 18. a limit switch; 19. a charging barrel; 20. a slider; 21. an extrusion type slurry 3D printer; 22. a U-shaped groove; 23. an arc-shaped slot; 24. mounting grooves; 25. an air duct.
Detailed Description
The present invention will be further explained with reference to the following embodiments and accompanying drawings. The specific embodiments are only used for further elaboration of the invention, and do not limit the scope of protection of the claims of the present application.
The utility model provides a special clamp (refer to special clamp for short, see fig. 1-8) for extrusion type slurry 3D printer, which is characterized in that the special clamp comprises a clamp body 1, a first fixed block 14, a second fixed block 15 and a third fixed block 16; the first fixing block 14, the second fixing block 15 and the third fixing block 16 are detachably mounted on the fixture body 1; the clamp body 1 is used for installing a linear electric push rod 17 of an extrusion type slurry 3D printer 21, a motor of the linear electric push rod 17 and a charging barrel 19; the first fixing block 14, the second fixing block 15 and the third fixing block 16 are used for fixing the extrusion type slurry 3D printer 21;
the front wall surface of the clamp body 1 is provided with a first containing cavity 12 and a second containing cavity 13 from top to bottom, so that the clamp body 1 is provided with a top plate, a middle plate and a bottom plate; a first notch 2 is formed in the center of the front end of a top plate of the clamp body 1, is used for placing a first fixing block 14 and a limit switch 18 of a linear electric push rod 17, and is matched with the first fixing block 14 in shape; a second notch 7 is formed in the center of the front end of the middle plate of the clamp body 1 and used for placing a second fixing block 15, and the shape of the second fixing block 15 is matched with that of the second fixing block; a third notch 11 is formed in the center of the front end of the bottom plate of the clamp body 1 and used for placing a third fixing block 16, and the shape of the third fixing block 16 is matched with that of the third fixing block;
the first fixed block 14 is of a straight quadrangular prism structure with an isosceles trapezoid bottom surface; when in use, the surface formed by the upper bottom of the isosceles trapezoid is the upper surface of the first fixing block 14, and is detachably mounted (inserted) in the first notch 2, and the lower surface of the first fixing block 14 is in contact with the end part of the linear electric push rod 17, so that the linear electric push rod 17 is prevented from moving in the Z-axis direction after working stress, and the rapid dismounting of the first fixing block 14 is facilitated;
the second fixed block 15 is in a structure that the bottom surface is an isosceles trapezoid quadrangular prism, and a U-shaped groove 22 matched with the shell of the linear electric push rod 17 is formed in the surface, which is in contact with the linear electric push rod 17; when the linear electric push rod fixing device is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the second fixing block 15, the isosceles trapezoid is detachably installed (inserted) in the second notch 7, and the U-shaped groove 22 is matched with the shell of the linear electric push rod 17, so that the linear electric push rod 17 is fixed, and the rapid disassembly and assembly of the second fixing block 15 are facilitated;
the third fixed block 16 is in a structure that the bottom surface is an isosceles trapezoid quadrangular prism, and an arc-shaped groove 23 matched with the shell of the charging barrel 19 is formed on the surface contacted with the charging barrel 19; when the charging barrel is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the third fixing block 16, the charging barrel is detachably mounted in (inserted into) the third groove 11, and the arc-shaped groove 23 is matched with the shell of the charging barrel 19, so that the charging barrel 19 is fixed and the third fixing block 16 is rapidly mounted and dismounted.
Preferably, the first cavity 12 is used for accommodating a linear electric push rod 17 and a motor of the linear electric push rod 17;
a motor fixing groove 5 with a notch facing the clamp body 1 is arranged in the first accommodating cavity 12, is positioned below the first notch 2 and is used for accommodating a motor of the linear electric push rod 17; a first strip-shaped through groove 3 is arranged in the first accommodating cavity 12, is positioned behind the motor fixing groove 5 and is used for wiring and heat dissipation of a motor of the linear electric push rod 17; a push rod fixing groove 6 with a notch facing the clamp body 1 and openings at the top and the bottom is arranged in the first accommodating cavity 12, is positioned below the motor fixing groove 5 and is used for placing a linear electric push rod 17;
the inner surface of the rear wall of the push rod fixing groove 6 is flush with the notch of the motor fixing groove 5, so that the motor fixing groove 5 can better fix a motor of the linear electric push rod 17;
still be provided with the second that runs through lateral wall about anchor clamps body 1 on the anchor clamps body 1 back wall and lead to groove 4, second leads to groove 4 and first logical groove 3 and communicates with each other, and second leads to groove 4 and is used for accelerating the heat dissipation of sharp electric putter 17's motor, prevents that sharp electric putter motor from appearing losing the step in the course of the work, influences printing quality.
The second notch 7 is communicated with the push rod fixing groove 6;
the second cavity 13 is used for realizing the up-and-down movement of the linear electric push rod 17 and the piston rod of the charging barrel 19 in the second cavity 13;
a groove 9 and a circular arc-shaped charging barrel fixing groove 10 are sequentially arranged in the second accommodating cavity 13 from top to bottom along the height direction of the special fixture; the groove 9 is used for limiting the end lug of the charging barrel 19; a step surface is formed between the material cylinder fixing groove 10 and the groove 9 and is used for placing an end lug of the material cylinder 19; the lower parts of the left side wall and the right side wall of the second cavity 13 are respectively provided with a mounting groove 24 which is recessed in the side wall and communicated with the groove 9, and the mounting grooves 24 are used for loading and unloading the charging barrel 19 and axially limiting the end lug of the charging barrel 19;
the two mounting grooves 24 can be symmetrically arranged or asymmetrically arranged; when the two mounting grooves 24 are symmetrically arranged, the length of the mounting groove 24 is long enough to meet the length that the charging barrel end lug is obliquely placed when the charging barrel 19 is mounted; when the two mounting grooves 24 are asymmetrically arranged, the two mounting grooves 24 are positioned in the front and back positions of the second accommodating cavity 13, and the charging barrel end lug is obliquely placed into the two mounting grooves 24, so that the charging barrel 19 is mounted.
The central axes of the groove 9, the charging barrel fixing groove 10 and the push rod fixing groove 6 are overlapped to ensure that the linear electric push rod 17 and the piston rod of the charging barrel 19 move on the same vertical axis;
the charging barrel fixing groove 10 is respectively communicated with the groove 9 and the third groove opening 11;
be provided with at least one row on the wall behind anchor clamps body 1 along special fixture direction of height be used for with extrude the epaxial mounting hole 8 of slider 20 of formula thick liquids 3D printer Z, be provided with a plurality of equidistance mounting holes 8 on every row, can adjust special fixture's mounting height in a flexible way.
The clamp body 1, the first fixed block 14, the second fixed block 15 and the third fixed block 16 are all made of PLA (polylactic acid) materials through 3D printing by an FDM process, the filling rate of the materials is 20%, the number of printing layers is 3, the weight of the special clamp is further reduced, and materials are saved.
In this embodiment, the linear electric push rod 17 is composed of 1 42 stepping motors, a metal gear, 2 limit switches and 1 telescopic rod, and the whole shell is made of aluminum alloy; the charging barrel 19 is a metal syringe, a 304 stainless steel shell, a glass cylindrical tube and a copper inner core, and the types of the charging barrel include 20mL, 30mL and 50 mL.
The utility model discloses a theory of operation and work flow are:
when the clamp is used for a plunger type extrusion mechanism, firstly, the clamp body 1 is installed on a slide block 20 of a Z shaft of an extrusion type slurry 3D printer 21 through a bolt; horizontally pushing the linear electric push rod 17 into the clamp body 1 from front to back by facing a motor of the linear electric push rod 17 to an opening on the front wall of the clamp body 1, clamping the limit switch 18 into the first notch 2, simultaneously enabling the lower surface of the limit switch 18 to coincide with the upper surface of the clamp body 1, clamping a shell of the linear electric push rod 17 into the push rod fixing groove 6, clamping a motor of the linear electric push rod 17 into the motor fixing groove 5, and enabling a line of the motor of the linear electric push rod 17 to pass through the first through groove 3 to be connected with an external power supply, so as to finish the installation of the linear electric push rod 17; the end lugs of the charging barrel are obliquely inserted into the mounting grooves 24 at the bottoms of the left side wall and the right side wall of the second accommodating cavity 13, and then the charging barrel 19 is rotated to enable the end lugs of the charging barrel to be clamped in the grooves 9, so that the charging barrel 19 is mounted; horizontally pushing the first fixing block 14 into the first notch 2 from front to back, and axially limiting the linear electric push rod 17; pushing the second positioning block 15 into the second notch 7 from top to bottom, and radially limiting the linear electric push rod 17; and pushing the third positioning block 16 into the third notch 11 from top to bottom to radially fix the charging barrel 19, so as to complete the assembly of the special fixture.
When the clamp is used for an air pressure type extrusion mechanism, firstly, the clamp body 1 is installed on a slide block 20 of a Z shaft of an extrusion type slurry 3D printer 21 through a bolt; a charging barrel 19 (the charging barrel uses an injector here) is placed in the charging barrel fixing groove 10, an air duct 25 of an air pump is connected with an adapter of the charging barrel 19, the air pump is placed on the peripheral ground, and the connection of the air pressure type extrusion mechanism and the special clamp is completed; and pushing the third positioning block 16 into the third notch 11 from top to bottom to radially fix the charging barrel 19, so as to complete the assembly of the special fixture.
The utility model discloses the nothing is mentioned the part and is applicable to prior art.
Claims (9)
1. The special fixture for the extrusion type slurry 3D printer is characterized by comprising a fixture body, a first fixing block, a second fixing block and a third fixing block;
the front wall surface of the clamp body is provided with a first containing cavity and a second containing cavity from top to bottom, so that the clamp body is provided with a top plate, a middle plate and a bottom plate; the front end of the top plate of the clamp body is provided with a first notch matched with the shape of the first fixed block; the front end of the middle plate of the clamp body is provided with a second notch matched with the shape of the second fixed block; the front end of the bottom plate of the clamp body is provided with a third notch matched with the shape of a third fixed block;
the first fixed block is of a straight quadrangular prism structure with an isosceles trapezoid bottom surface; when the linear electric push rod is used, the surface formed by the upper bottom of the isosceles trapezoid is the upper surface of the first fixing block, the isosceles trapezoid is detachably arranged in the first notch, and the lower surface of the first fixing block is contacted with the end part of the linear electric push rod;
the second fixed block adopts a structure that the bottom surface is an isosceles trapezoid quadrangular prism and is provided with a U-shaped groove matched with the shell of the linear electric push rod; when the linear electric push rod is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the second fixed block, the isosceles trapezoid is detachably arranged in the second notch, and the U-shaped groove is matched with the shell of the linear electric push rod;
the third fixed block adopts a structure that the bottom surface is an isosceles trapezoid quadrangular prism and is provided with an arc-shaped groove matched with the shell of the charging barrel; when the charging barrel is used, the surface formed by the lower bottom of the isosceles trapezoid is the upper surface of the third fixing block, the isosceles trapezoid is detachably mounted in the third notch, and the arc-shaped groove is matched with the shell of the charging barrel.
2. The extrusion type slurry 3D printer special fixture as claimed in claim 1, wherein a motor fixing groove with a notch facing the fixture body is provided in the first cavity, and the motor fixing groove is located below the first notch and used for placing a motor of the linear electric push rod; the first accommodating cavity is internally provided with a first strip-shaped through groove which is positioned behind the motor fixing groove and used for wiring and heat dissipation of a motor of the linear electric push rod; the first chamber is provided with a push rod fixing groove with a notch facing the clamp body and the top and the bottom being provided with openings, is located below the motor fixing groove and is used for placing a linear electric push rod.
3. The extrusion type slurry 3D printer specific fixture according to claim 2, wherein an inner surface of the rear wall of the push rod fixing groove is flush with a notch of the motor fixing groove.
4. The special fixture for the extrusion type slurry 3D printer according to claim 2, wherein a second through groove is formed in the rear wall of the fixture body, the second through groove is communicated with the first through groove, and the second through groove is used for accelerating heat dissipation of a motor of the linear electric push rod.
5. The special fixture for the extruded paste 3D printer according to claim 2, wherein the second notch communicates with the push rod fixing groove.
6. The extrusion type slurry 3D printer special fixture as claimed in claim 2, wherein the second chamber is provided with a groove and a circular arc-shaped material barrel fixing groove in sequence from top to bottom along a height direction of the special fixture; the groove is used for limiting the end lug of the charging barrel; a stepped surface is formed between the charging barrel fixing groove and the groove and used for placing an end lug of the charging barrel; the lower parts of the left side wall and the right side wall of the second cavity are provided with mounting grooves which are sunken in the side walls and communicated with the grooves, and the mounting grooves are used for loading and unloading the charging barrel and axially limiting end lugs of the charging barrel.
7. The extrusion type slurry 3D printer special fixture according to claim 6, wherein the central axes of the groove, the barrel fixing groove and the push rod fixing groove coincide to ensure that the linear electric push rod and the piston rod of the barrel move on the same vertical axis.
8. The extrusion type slurry 3D printer specific fixture according to claim 6, wherein the cartridge fixing groove communicates with the groove and the third groove opening, respectively.
9. The special fixture for the extrusion type slurry 3D printer according to claim 1, wherein at least one row of mounting holes for fixing with a slide block on a Z axis of the extrusion type slurry 3D printer is arranged on the rear wall of the fixture body along the height direction of the special fixture, and a plurality of mounting holes with equal distance are arranged on each row, so that the mounting height of the special fixture can be flexibly adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130758.1U CN210705238U (en) | 2019-07-18 | 2019-07-18 | Extrusion type slurry 3D printer special fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130758.1U CN210705238U (en) | 2019-07-18 | 2019-07-18 | Extrusion type slurry 3D printer special fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210705238U true CN210705238U (en) | 2020-06-09 |
Family
ID=70956263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921130758.1U Withdrawn - After Issue CN210705238U (en) | 2019-07-18 | 2019-07-18 | Extrusion type slurry 3D printer special fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210705238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253710A (en) * | 2019-07-18 | 2019-09-20 | 河北工业大学 | A kind of extruded type slurry 3D printer special fixture |
-
2019
- 2019-07-18 CN CN201921130758.1U patent/CN210705238U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253710A (en) * | 2019-07-18 | 2019-09-20 | 河北工业大学 | A kind of extruded type slurry 3D printer special fixture |
| CN110253710B (en) * | 2019-07-18 | 2024-02-02 | 河北工业大学 | Special fixture for extrusion type slurry 3D printer |
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