CN115007880B - 3D printer for titanium alloy casting mold - Google Patents
3D printer for titanium alloy casting mold Download PDFInfo
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- CN115007880B CN115007880B CN202210554874.6A CN202210554874A CN115007880B CN 115007880 B CN115007880 B CN 115007880B CN 202210554874 A CN202210554874 A CN 202210554874A CN 115007880 B CN115007880 B CN 115007880B
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- 238000005266 casting Methods 0.000 title claims abstract description 26
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 16
- 238000007639 printing Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 239000012535 impurity Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010100 freeform fabrication Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/30—Platforms or substrates
- B22F12/33—Platforms or substrates translatory in the deposition plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention relates to the technical field of 3D printing, and particularly discloses a 3D printer for a titanium alloy casting die, which comprises a working box, wherein a bearing mechanism and a spraying mechanism are respectively arranged in the working box; the material spraying mechanism comprises a longitudinal moving mechanism which is fixedly connected to the workbench; the movable end of the longitudinal moving mechanism is fixed with a transverse moving mechanism, and the movable end of the transverse moving mechanism is fixed with a sprayer; the bearing mechanism is fixedly connected to the workbench; the vertical moving mechanism is fixedly connected to the workbench, and the moving end of the vertical moving mechanism is fixedly connected with the supporting table; the top of the supporting table is horizontally connected with a supporting plate in a sliding manner; the top fixedly connected with first driving motor of brace table, first driving motor output coaxial fixedly connected with first gear. The invention aims to provide a 3D printer for a titanium alloy casting die, which aims to solve the technical problem that a large die for 3D printing is difficult to carry.
Description
Technical Field
The invention relates to the technical field of 3D printing, and particularly discloses a 3D printer for a titanium alloy casting die.
Background
3D printing techniques, also known as "additive manufacturing techniques", "rapid prototyping techniques", and "solid freeform fabrication techniques", have been developed for more than 30 years so far. The 3D printing technology is based on a discrete-stacking principle, takes a digital model as a basis, and melts and stacks materials layer by layer through computer program operation, so that a three-dimensional object is finally obtained. Titanium alloy castings have been widely used in shipbuilding, chemical industry, metallurgy, medical treatment and the like because of their high strength, good corrosion resistance and high heat resistance. At present, although the latest 3D printing technology can realize direct printing of the titanium alloy structural member, the cost of the 3D printing titanium alloy structural member is high due to the high price of the titanium alloy powder, so that the 3D printing technology is not suitable for mass production and application.
At present, in the mass production process of large titanium alloy structural parts, the production and the manufacture are generally carried out in a casting mode. Because the precision of the casting is required to be accurate, the casting mould is required to be higher. Because of the high chemical activity of titanium, graphite is generally selected as a casting mold material for 3D printing to prepare the casting mold material in order to avoid violent reaction with the casting mold material during casting.
Existing 3D printers typically park the printed mold inside the 3D printer after printing is completed. For example, chinese patent publication (publication No. CN 110978496A) discloses a multi-print-head automatic head-changing rapid-forming 3d printer and a printing method thereof, wherein the printer comprises a frame, an attaching platform, a first driving part, a second driving part, a third driving part, a z-axis driving part, an electromagnetic head-changing assembly and a magnetic force adsorption assembly; the first, second and third printing heads reciprocate in the first, second and third areas under the driving of the first, second and third driving parts respectively, the z-axis driving part drives the attaching platform to descend by the height corresponding to the section model, and the steps are repeated again until the model printing task is completed, so that a finished product is obtained.
When printing is completed, an operator needs to manually carry the printed mold out of the 3D printer. However, large casting molds are generally heavy and difficult to handle. In addition, there is a risk that the operator may damage the internal facilities of the 3D printer due to false touch when entering the 3D printer to carry the finished product.
Disclosure of Invention
The invention aims to provide a 3D printer for a titanium alloy casting die, which aims to solve the technical problem that a large die for 3D printing is difficult to carry.
In order to achieve the above purpose, the basic scheme of the invention is as follows: A3D printer for a titanium alloy casting die comprises a working box, wherein a bearing mechanism and a spraying mechanism are respectively arranged in the working box;
the material spraying mechanism comprises a longitudinal moving mechanism which is fixedly connected to the workbench; the movable end of the longitudinal moving mechanism is fixed with a transverse moving mechanism, and the movable end of the transverse moving mechanism is fixed with a sprayer;
the bearing mechanism is positioned right below the spraying mechanism and is fixedly connected to the workbench; the vertical moving mechanism is fixedly connected to the workbench, and the moving end of the vertical moving mechanism is fixedly connected with the supporting table;
the top of the supporting table is horizontally connected with a supporting plate in a sliding manner; the top fixedly connected with first driving motor of brace table, the coaxial fixedly connected with first gear of first driving motor output, the bottom fixedly connected with of backup pad and first rack of first gear complex.
The working principle of the basic scheme is as follows: according to the technical scheme, the transverse moving mechanism of the material spraying mechanism is utilized, and the effect that the material sprayer transversely and freely moves above the workbench is achieved. And the longitudinal moving mechanism of the free end on the transverse moving mechanism can be used for enabling the sprayer to move freely in the longitudinal direction while moving freely in the transverse direction. Under the combined action of the transverse moving mechanism and the longitudinal moving mechanism, the technical effect that the sprayer can move freely in the same horizontal plane is finally achieved.
The supporting plate on the supporting table is utilized to achieve the effect of accommodating and bearing the 3D printing die. The supporting table and the supporting plate realize free movement in the vertical direction by utilizing a vertical movement mechanism. As the sprayer continues to operate, the support plate also gradually descends from its highest position (nearest the sprayer position). So as to achieve the technical effect of spraying and printing the material layer by layer on the supporting plate by the sprayer.
According to the technical scheme, the support plate and the support table are connected in a sliding mode, so that the effect that the 3D printing die which is printed is automatically conveyed and discharged from the 3D printer is achieved. The operator only needs to drive the first gear to rotate circumferentially by controlling the first driving motor. Because the first gear is meshed with the first rack, the supporting plate can move horizontally relative to the first gear in the rotating process of the first gear. And the supporting plate continuously moves horizontally until the supporting plate completely leaves from the inside of the 3D printer, and finally the technical effect of exposing the printed 3D printing die to the outside is achieved.
The beneficial effect of this basic scheme lies in: 1. compared with a 3D printer in the prior art, the technical scheme can realize the technical effect that the printed product is automatically sent out from the 3D printer after the casting die product is printed, and realize the technical effect of automatic blanking of the casting die product after the printing is finished.
Compared with the prior art, the technical scheme effectively avoids operators to carry casting die products after printing is finished, and can also ensure the stability and safety in the blanking process on the basis of saving labor cost.
Compare in traditional artifical transport unloading mode, this technique can make the inside of printing the product of accomplishing send out from the 3D printer automatically, effectively avoids leading to the risk emergence that leads to causing the destruction to 3D printer inner structure because of operating personnel gets into the inside transport product of 3D printer.
Further, the top of backup pad articulates there is the fly leaf, the pin joint of fly leaf is located and is close to backup pad ejection of compact direction's one side.
The beneficial effects are that: according to the technical scheme, the movable plate is hinged with the supporting plate, so that the movable plate can rotate relative to the supporting plate, impurities and the like on the surface of the movable plate can be directionally moved to one side, and an operator can concentrate and recover the impurities.
Further, a second gear is rotatably connected to one end, away from the discharging direction of the support plate, of the first rack, and the second gear can be meshed with the first gear; the eccentric department of second gear lateral wall articulates there is the connecting rod, the one end that the connecting rod kept away from the second gear articulates the slider, perpendicular opening in backup pad top has the slide opening, slider sliding connection in the slide opening, the top of slider offset in the fly leaf bottom.
The beneficial effects are that: according to the technical scheme, the crank slide block mechanism is formed by the connecting rod, the slide block and the second gear, and the second gear can enable the slide block to vertically and freely move in the circumferential rotation process. The sliding block drives the movable plate to reciprocate in the process of reciprocating motion in the vertical direction, so that the technical effect of equal-frequency vibration of the movable plate is finally achieved, and the guiding effect of impurities on the surface of the movable plate is effectively improved. In the process that the movable plate moves towards the discharging direction, the first gear is meshed with the first rack first, and the movable plate is driven to move under the action of the first gear. When the first rack is completely driven away from the first gear, the second gear on the movable plate is meshed with the first gear. Along with the continuous rotation of the first gear, the first gear drives the second gear to rotate, and the second gear rotates to drive the movable plate to vibrate in a reciprocating manner by using the connecting rod and the sliding block.
Further, the movable plate is close to one end fixedly connected with baffle of backup pad ejection of compact direction.
The beneficial effects are that: according to the technical scheme, the baffle is additionally arranged so as to intensively block and collect impurities on the surface of the movable plate.
Further, one side of the movable plate, which is close to the baffle plate, is provided with a plurality of sieve holes.
The beneficial effects are that: according to the technical scheme, the sieve holes are formed in the movable plate, so that impurities on the surface of the movable plate can be cleaned from the surface of the movable plate in the first time in the process of vibration.
Further, the supporting plate is provided with a collecting cavity right below the sieve holes.
The beneficial effects are that: according to the technical scheme, the collecting cavity is additionally arranged at the bottom of the sieve holes, so that workers can concentrate and recycle collected impurities.
Further, vertical moving mechanism includes first lead screw, first lead screw vertical fixed connection in the work box, fixedly connected with second driving motor in the work box, second driving motor output coaxial fixed connection first lead screw, brace table lateral wall fixedly connected with first lead screw complex ball slide.
The beneficial effects are that: according to the technical scheme, the ball screw is adopted, so that the supporting table can freely move up and down in the working box. The ball screw has the technical advantages of high conveying stability and high accuracy.
Further, vertical moving mechanism still includes the guide bar, brace table lateral wall fixedly connected with guide bar complex guide block.
The beneficial effects are that: according to the technical scheme, the guide rod and the guide block are additionally arranged to realize the guide effect on the supporting table, so that the supporting table can stably and vertically move freely under the action of the first screw rod.
Further, the longitudinal moving mechanism comprises a third driving motor, the third driving motor is fixedly connected with the working box, the output end of the third driving motor is fixedly connected with a first driving wheel, the first driving wheel is in running fit with a first driving belt, and the transverse moving mechanism is fixedly connected with the first driving belt.
Further, the first driving motor, the second driving motor and the third driving motor are servo motors.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
FIG. 1 is a block diagram of a 3D printer for a titanium alloy casting mold according to the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1;
fig. 3 is a schematic left view illustrating an initial state of a bearing mechanism according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a portion at B in FIG. 3;
fig. 5 is a schematic left-hand view of a carrying mechanism in a 3D printing completion state according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of a portion of FIG. 5 at C;
FIG. 7 is an enlarged schematic view of a portion of the portion of FIG. 5 at D;
fig. 8 is a schematic left view illustrating an initial state of a bearing mechanism according to an embodiment of the present invention;
fig. 9 is a partially enlarged schematic view at E in fig. 8.
Detailed Description
Additional advantages and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Reference numerals in the drawings of the specification include: guide rod 1, supporting bench 2, guide block 3, first lead screw 4, ball seat 5, backup pad 6, first gear 7, first rack 8, second gear 9, cavity 10, connecting rod 11, slide hole 12, slider 13, fly leaf 14, baffle 15, sieve mesh 16, collection chamber 17, drive belt 19, driving roller 20, first drive belt 21, second drive belt 22, drive seat 23, fourth servo motor 24, sprayer 25, work box 26, work plate 27, thimble 28, compression spring 29, locating hole 30, bellows 31.
Examples
Basically as shown in fig. 1 and 2: A3D printer for a titanium alloy casting die comprises a working box 26, wherein a bearing mechanism and a spraying mechanism are respectively arranged in the working box 26.
The bearing mechanism comprises a vertical moving mechanism, the vertical moving mechanism comprises four guide rods 1 which are parallel to each other, and the guide rods 1 are vertically fixed at the bottom of the working box 26 in a threaded manner. A supporting table 2 is slidably connected between the four guide rods 1, the top of the supporting table 2 is a plane, and guide blocks 3 matched with the guide rods 1 are fixed on the side walls of the supporting table 2 in a threaded manner.
The bottom of the working box 26 is also fixedly connected with a second servo motor (not shown in the figure) through a vertical bolt, the output end of the second driving motor is coaxially and fixedly connected with a first screw 4, and the axial direction of the first screw 4 is parallel to the guide rod 1. The lateral wall screw thread fixedly connected with ball seat 5 of supporting bench 2, ball seat 5 and first lead screw 4 mutually support.
As shown in fig. 3 and fig. 4, a first servo motor (not shown in the drawings) is fixedly connected to the top bolt of the supporting table 2, and a first gear 7 is coaxially and fixedly connected to the output end of the first servo motor. A slideway is arranged at the top of the supporting table 2, and a supporting plate 6 is horizontally and slidably connected on the slideway. The bottom welded fastening of backup pad 6 has first rack 8, and first rack 8 can with first gear 7 intermeshing. The bottom of backup pad 6 is fixed open in the left side of adjacent first rack 8 has cavity 10, and cavity 10 swivelling joint has second gear 9, and second gear 9 can intermesh with first gear 7.
The supporting plate 6 is provided with a slide hole 12 right above the cavity 10, and the top of the slide hole 12 is communicated with the outside. A sliding block 13 is connected in the sliding hole 12 in a sliding way, a connecting rod 11 is hinged to the side wall of the sliding block 13, and one end, away from the sliding block 13, of the connecting rod 11 is hinged to the eccentric side wall of the second gear 9. The top of the supporting plate 6 is hinged with a movable plate 14, and the hinge point of the movable plate 14 is positioned near the top end of the right sliding block 13 of the supporting plate 6 and props against the bottom end of the movable plate 14. A baffle 15 is welded and fixed at the right end of the top of the movable plate 14. The top of the movable plate 14 is uniformly provided with a plurality of sieve holes 16 on the left side of the baffle 15. The supporting plate 6 is provided with a collecting cavity 17 under the sieve holes 16, and the top of the collecting cavity 17 is open.
The top in the working box 26 is also provided with a spraying mechanism, which comprises a longitudinal moving mechanism, wherein the longitudinal moving mechanism comprises a third driving motor, and the third driving motor is fixedly connected to the top of the working box 26 through bolts. The output end of the third driving motor is connected with a driving belt 19, and one end of the driving belt 19 far away from the third driving motor is matched with a driving roller 20. The driving roller 20 is rotatably connected to the top of the working box 26, and a first driving wheel is coaxially and fixedly connected to the right end of the driving roller 20. The first driving wheel is rotatably matched with a first driving belt 21, a transmission seat 23 is fixed on the first driving belt 21 through bolts, and a transverse moving mechanism is arranged on the transmission seat 23. The lateral movement mechanism comprises a second driving wheel which is rotatably connected to the transmission seat 23. The second driving wheel is coaxially and fixedly connected with a fourth servo motor 24, the second driving wheel is rotatably matched with a second driving belt 22, and a sprayer 25 for 3D printing is fixedly arranged on the second driving belt 22 through bolts.
The specific implementation mode is as follows: before 3D printing, the operator moves the support table 2 and the support plate 6 to the top end of the working box 26 by controlling the second servo motor, so that the distance between the movable plate 14 on the support table 2 and the sprayer 25 is closest. While the support plate 6 is also located directly above the support table 2.
And then starting 3D printing, and driving the driving roller 20 to rotate by the third driving motor through the driving belt 19 in the 3D printing process, and driving the first driving belt 21 to rotate in the driving roller 20 rotating process, so that the technical effect of longitudinally moving the driving seat 23 on the first driving belt 21 is realized. Meanwhile, the fourth servo motor 24 drives the second driving wheel to rotate, and the second driving wheel drives the sprayer 25 to move transversely through the second driving belt 22. To finally achieve the technical effect that the sprayer 25 can be freely moved in the lateral and longitudinal directions.
Along with the continuous work of the sprayer 25, the second servo motor controls the first screw rod 4 to rotate, the first screw rod 4 drives the ball seat 5 to vertically move downwards, the supporting table 2 also gradually descends from the highest position gradually, and the technical purpose of spraying the sprayer 25 on the movable plate 14 layer by layer is achieved.
As shown in fig. 5, 6 and 7, after the 3D printing is completed, the first servo motor is started, and drives the first gear 7 to rotate clockwise. Since the first gear 7 is engaged with the first rack 8, the support plate 6 is also horizontally moved from left to right with respect to the support table 2 during the rotation of the first gear 7. Continued horizontal movement of the support plate 6 in turn moves the 3D printed mold from inside the working box 26 to outside. When the support plate 6 is moved to the far right end of the opposite support table 2, the first gear 7 is disengaged from the first rack 8 and is engaged with the second gear 9. As the first gear 7 continues to rotate, the first gear 7 drives the second gear 9 to rotate. Since the connecting relationship of the connecting rod 11, the slider 13 and the second gear 9 constitutes a crank slider mechanism, the slider 13 moves up and down in the slide hole 12. The movable plate 14 is continuously pushed to vibrate reciprocally around the hinge point during the up-and-down movement of the slider 13. During the continuous vibration, the debris impurities generated on the surface of the movable plate 14 due to the 3D printing are concentrated and vibrated to the rightmost end of the movable plate 14, and finally fall into the collection chamber 17 through the mesh 16 by the baffle 15.
Examples
The difference between this embodiment and the first embodiment is that, as shown in fig. 8 and fig. 9, the movable plate 14 has a rectangular plate structure, the top of the movable plate 14 is welded with the thimble 28 at four corners, the thimble 28 has a cylindrical structure, and the top of the thimble 28 has a hemispherical structure. The outer wall of the lower half part of the thimble 28 is a smooth outer wall, and the outer wall of the upper half part of the thimble 28 is provided with external threads. A working plate 27 is further arranged right above the movable plate 14, four groups of compression springs 29 are fixedly connected between the working plate 27 and the movable plate 14, and each compression spring 29 surrounds the periphery of one thimble 28. The expansion and contraction direction of the compression spring 29 is parallel to the central axis of the ejector pin 28. Four positioning holes 30 are also formed in the working plate 27, the ejector pins 28 are slidably connected to the positioning holes 30, and the positioning holes 30 are located at the lower half height position of the ejector pins 28. The baffle 15 is welded and fixed on the upper right of the working plate 27, and the right end of the working plate 27 is also provided with a sieve mesh 16, and a corrugated pipe 31 which can freely axially stretch and retract is communicated between the sieve mesh 16 of the working plate 27 and the sieve mesh 16 of the movable plate 14.
The specific implementation process is as follows: the ejectors 25 of the 3D printer perform 3D spray printing on top of the work plate 27. As printing continues to progress, the weight of material deposited on top of the work plate 27 increases. Further, the working plate 27 is pressed against the compression spring 29, and the compression spring 29 is contracted after being compressed. The relative distance between the working plate 27 and the movable plate 14 is shortened in the shrinking process, so that the top of the thimble 28 continuously rises relative to the top of the working plate 27. The thimble 28 that continuously rises realizes fixing in position the mould that prints 3D on the working plate 27, makes the mould that 3D printed more stable, prevents that the displacement slip's the condition from taking place for the mould sample that 3D printed, effectively improves the precision that 3D printed.
Finally, when the movable plate 14 continues to vibrate due to the crank block mechanism, the working plate 27 can also be tilted relatively together with the movable plate 14. The thimble 28 can further strengthen and stabilize the die. Finally, the impurities screened out by the vibration screen fall into the sieve holes 16 of the movable plate 14 through the sieve holes 16 of the working plate 27 by the corrugated pipe 31, and finally the effect of collecting the impurities is realized.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (5)
1. A3D printer for titanium alloy casting mould, its characterized in that: the automatic spraying device comprises a working box (26), wherein a bearing mechanism and a spraying mechanism are respectively arranged in the working box (26);
the material spraying mechanism comprises a longitudinal moving mechanism which is fixedly connected to the workbench; a transverse moving mechanism is fixed at the moving end of the longitudinal moving mechanism, and a sprayer (25) is fixed at the moving end of the transverse moving mechanism;
the bearing mechanism is positioned right below the spraying mechanism and is fixedly connected to the workbench; the automatic lifting device further comprises a vertical moving mechanism, wherein the vertical moving mechanism is fixedly connected to the workbench, and the moving end of the vertical moving mechanism is fixedly connected with a supporting table (2);
the top of the supporting table (2) is horizontally and slidably connected with a supporting plate (6); the top of the supporting table (2) is fixedly connected with a first driving motor, the output end of the first driving motor is coaxially and fixedly connected with a first gear (7), and the bottom of the supporting plate (6) is fixedly connected with a first rack (8) matched with the first gear (7);
the top of the supporting plate (6) is hinged with a movable plate (14), and the hinge point of the movable plate (14) is positioned at one side close to the discharging direction of the supporting plate (6);
the support plate (6) is rotatably connected with a second gear (9) at one end of the first rack (8) far away from the discharging direction of the support plate (6), and the second gear (9) can be meshed with the first gear (7); a connecting rod (11) is hinged to the eccentric position of the side wall of the second gear (9), one end, away from the second gear (9), of the connecting rod (11) is hinged to a sliding block (13), a sliding hole (12) is vertically formed in the top of the supporting plate (6), the sliding block (13) is connected to the sliding hole (12) in a sliding mode, and the top end of the sliding block (13) abuts against the bottom end of the movable plate (14);
one end of the movable plate (14) close to the discharging direction of the supporting plate (6) is fixedly connected with a baffle plate (15); a plurality of sieve holes (16) are formed in one side, close to the baffle plate (15), of the movable plate (14); the supporting plate (6) is provided with a collecting cavity (17) right below the sieve holes (16).
2. A 3D printer for titanium alloy casting molds according to claim 1, wherein: the vertical moving mechanism comprises a first screw rod (4), the first screw rod (4) is vertically and fixedly connected with the working box (26), a second driving motor is fixedly connected in the working box (26), the output end of the second driving motor is coaxially and fixedly connected with the first screw rod (4), and the side wall of the supporting table (2) is fixedly connected with a ball sliding seat matched with the first screw rod (4).
3. A 3D printer for titanium alloy casting molds according to claim 2, wherein: the vertical moving mechanism further comprises a guide rod (1), and the side wall of the supporting table (2) is fixedly connected with a guide block (3) matched with the guide rod (1).
4. A 3D printer for titanium alloy casting molds according to claim 3, wherein: the longitudinal moving mechanism comprises a third driving motor which is fixedly connected with the working box (26), the output end of the third driving motor is fixedly connected with a first driving wheel, the first driving wheel is rotatably matched with a first driving belt (21), and the transverse moving mechanism is fixedly connected with the first driving belt (21).
5. A 3D printer for titanium alloy casting molds as defined in claim 4, wherein: the first driving motor, the second driving motor and the third driving motor are servo motors.
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| CN202210554874.6A CN115007880B (en) | 2022-05-19 | 2022-05-19 | 3D printer for titanium alloy casting mold |
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| CN115007880A (en) | 2022-09-06 |
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