CN116061434B - 3D printer with membrane stretching mechanism - Google Patents
3D printer with membrane stretching mechanism Download PDFInfo
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- CN116061434B CN116061434B CN202310098586.9A CN202310098586A CN116061434B CN 116061434 B CN116061434 B CN 116061434B CN 202310098586 A CN202310098586 A CN 202310098586A CN 116061434 B CN116061434 B CN 116061434B
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- fixedly connected
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- ring
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- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title claims description 43
- 239000000463 material Substances 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 210000003781 tooth socket Anatomy 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims 1
- 229920006302 stretch film Polymers 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010146 3D printing Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 17
- 238000013461 design Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- 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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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Screen Printers (AREA)
Abstract
The invention belongs to the technical field of 3D printing equipment, in particular to a 3D printer with a film stretching mechanism, which comprises a mounting base, wherein mounting plates are vertically and fixedly connected to the top of the mounting base at positions close to the front side and the rear side, a tray is arranged between the two mounting plates, mounting strips are horizontally and fixedly connected to the front side and the rear side of the tray, and first mounting grooves are horizontally formed in the mounting plates at positions corresponding to the mounting strips. According to the invention, the tightening device is arranged, when the tension degree of the breathable film is weakened, the tray is pushed to move along the first mounting groove towards the forming platform, in the process, the tightening device at the bottom of the tray can upwards squeeze the breathable film from the edge position of the bottom of the breathable film along with the pushing of the tray, and the positioning device can lock the position regulated by the tightening device, so that the breathable film can be gradually tensioned by the tightening device, and the release effect of the breathable film on a printing product is ensured.
Description
Technical Field
The invention belongs to the technical field of 3D printing equipment, and particularly relates to a 3D printer with a film stretching mechanism.
Background
The 3D printer, also called a three-dimensional printer, is a process device for rapid molding. Functionally, as with the laser forming technique, layering processing and superposition forming are employed, i.e., the 3D entity is created by adding material layer by layer, which is quite different from conventional material removal processing techniques. 3D printing has become a trend, and is widely applied to the design field, especially industrial design, digital product die sinking and the like, and can finish printing of one die within a few hours, so that development time of a lot of products to the market is saved.
The existing 3D printer mainly comprises a forming platform, a material tray and a breathable film, wherein the material tray is used for containing printing materials, the breathable film is arranged at the bottom of the material tray, and a gap is reserved at the bottom of the breathable film, so that gas can conveniently pass through the breathable film from the bottom, the purpose of reducing release force and improving printing time is achieved.
However, in the long-term printing process, as the gas continuously passes through the gas permeable membrane, the gas permeable membrane becomes loose due to the tension of the gas, thereby affecting the release effect of the gas permeable membrane on the printed product.
Therefore, it is necessary to invent a 3D printer with a film stretching mechanism to solve the above problems.
Disclosure of Invention
In view of the above, the present invention provides a 3D printer with a film stretching mechanism to solve the above-mentioned problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a 3D printer with stretch out membrane mechanism, includes the installation base, the equal perpendicular fixedly connected with mounting panel in position that the installation base top is close to front and back side, two be equipped with the charging tray between the mounting panel, the equal horizontal fixedly connected with installation strip in front and back side of charging tray, the installation strip corresponds the position the first mounting groove has been seted up to the level on the mounting panel, and installation strip slidable mounting is in first mounting groove, the recess has been seted up to the bottom of charging tray, and installs the ventilated membrane in the recess, the bottom of ventilated membrane is equipped with the tight device that stretches out with the ventilated membrane and stretches out tightly the tight device of usefulness, all be equipped with the positioner that the tight device of location was used around the charging tray, one side of charging tray is equipped with the forming device that the cooperation charging tray used.
Further, the tightening device comprises a supporting plate, the positions, close to four corners, of the top of the supporting plate are vertically and fixedly connected with limiting rods, limiting blocks are sleeved on the limiting rods in a sliding manner, the limiting blocks are fixedly connected with the lateral side of the side of a material tray, the top of the supporting plate is fixedly connected with square inserting rings, one side, close to a forming device, of each inserting ring is connected with an air inlet pipe, slots matched with the inserting rings are formed in the groove walls of the top of the groove, the inner sides of the inserting rings are provided with supporting rings, a plurality of telescopic rods are vertically and fixedly connected between the positions of the two sides of the bottom of each supporting ring and the supporting plate, first springs are sleeved on the telescopic rods, supporting plates are fixedly connected to the positions of the front side and the rear side of the bottom of each supporting ring, right-angle plates are fixedly connected with right-angle plates on the sides of the two supporting plates, strip-shaped holes are formed in a penetrating manner along the two sides, the top end of the strip-shaped hole inclines towards the direction close to the center of the supporting ring, a deflector rod is vertically and slidably inserted in the position, which is opposite to the right-angle plate, of the front side and the rear side of the inserting ring, a notch is formed in one end, which is close to the right-angle plate, of the deflector rod, a fixed shaft is fixedly connected between the front side inner wall and the rear side inner wall of the notch side, the fixed shaft is slidably inserted in the strip-shaped hole, which is corresponding to the right-angle plate, an inclined plane groove is formed in the top of the mounting base, the groove wall of the bottom of the inclined plane groove is gradually inclined towards the direction close to the forming device, a supporting block is arranged in the inclined plane groove, sliding blocks are fixedly connected to the front side and the rear side of the supporting block, sliding grooves are formed in the side walls of the inclined plane groove, which are corresponding to the sliding blocks are slidably mounted in the corresponding sliding grooves, the sliding grooves are parallel to the groove wall of the bottom of the inclined plane groove, one side, which is close to the forming device, of the sliding blocks are provided with a second spring, and two ends of the second spring are fixedly connected with the sliding block and the corresponding groove wall of the sliding groove respectively, and stop rods are vertically and fixedly connected to the positions, close to the front side and the rear side, of the top of the supporting block.
Further, positioner includes the fixed plate, fixed plate fixed connection is in charging tray bottom edge position, the fixed plate runs through the grafting along fore-and-aft direction is slided and is had the locating pin, and the diameter at locating pin both ends all is greater than the diameter of locating pin interlude, the locating pin is located one side that the fixed plate is close to the insert ring and has cup jointed the third spring, one side fixedly connected with locating piece that the locating pin is close to the insert ring, and the bottom surface of locating piece is the inclined plane design, and the locating piece corresponds the position insert the ring outside and seted up vertical tooth's socket, be equipped with the tooth in the tooth's socket, and tooth and locating piece meshing are in the same place.
Further, forming device includes the fly leaf, and the fly leaf front and back side corresponds the second mounting groove has been seted up to the level on the mounting panel, and the front and back side of fly leaf slidable mounting respectively in two second mounting grooves, the perpendicular fixedly connected with crane in top of fly leaf, one side fixedly connected with forming platform that the crane is close to the charging tray.
Further, four storage grooves are formed in the bottom of the material tray, the four storage grooves are parallel to the four sides of the slot respectively, the four storage grooves are located at the inner edge positions of the slot, the rolling shaft is rotatably mounted in the slot, and the bottom of the rolling shaft is located outside the storage grooves.
Further, the inside fixedly connected with a plurality of horizontal poles of die-ring, a plurality of the horizontal poles interweave together perpendicularly, and the top of horizontal pole flushes with the top of die-ring.
Further, a supporting tube is sleeved on the part of the deflector rod, which is positioned at the outer side of the inserting ring, in a sliding manner, and the supporting tube is vertically and fixedly connected with the inserting ring.
Further, the height of the insert ring is equal to the sum of the height of the supporting plate and the thickness of the support ring, and when the top of the support ring is level with the top of the insert ring, one end of the deflector rod, which is far away from the right angle plate, is just not contacted with the stop lever.
Further, when the support block slides along the inclined plane groove, the maximum change amount of the support block along the vertical direction is equal to the depth of the slot, and the distance is larger than the maximum vertical distance from the top of the stop lever to the deflector rod.
The invention has the technical effects and advantages that:
1. according to the invention, the tightening device is arranged, when the tension of the breathable film is weakened, the tray is pushed to move along the first mounting groove towards the forming platform, in the process, the tightening device at the bottom of the tray can upwards squeeze the breathable film from the edge position of the bottom of the breathable film along with the pushing of the tray, and the positioning device can lock the position regulated by the tightening device, so that the breathable film can be gradually tensioned by the tightening device, and the release effect of the breathable film on a printing product is ensured;
2. in the process that the inserting ring inserts the ventilated membrane into the slot, along with the ventilated membrane being gradually pressed into the slot, the ventilated membrane slides along with the bottom of the rolling shaft, and the rolling shaft can start rotating under the action of friction force of the ventilated membrane to the ventilated membrane, so that the sliding friction force between the ventilated membrane and the bottom of the charging tray is converted into rolling friction between the ventilated membrane and the rolling shaft, and further, the ventilated membrane is prevented from being worn out due to overlarge friction force.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the major face structure of the present invention;
FIG. 3 is a schematic perspective view of the tightening device of the present invention;
FIG. 4 is a schematic view of a partial perspective view of the tightening device of the present invention;
FIG. 5 is a schematic perspective view of the mounting base, mounting plate, support block and stop lever of the present invention;
FIG. 6 is a schematic perspective view of the bottom of the tray of the present invention;
FIG. 7 is a side elevational view in cross-section of the present invention;
fig. 8 is an enlarged view of a portion a of fig. 7 in the present invention.
In the figure: 1. a mounting base; 2. a mounting plate; 3. a material tray; 4. a mounting bar; 5. a breathable film; 6. a tightening device; 601. a supporting plate; 602. a limit rod; 603. inserting a ring; 604. an air inlet pipe; 605. a slot; 606. a backing ring; 607. a telescopic rod; 608. a first spring; 609. a support plate; 610. a right angle plate; 611. a bar-shaped hole; 612. a deflector rod; 613. a fixed shaft; 614. a support block; 615. a slide block; 616. a second spring; 617. a stop lever; 7. a positioning device; 71. a fixing plate; 72. a positioning pin; 73. a third spring; 74. a positioning block; 75. teeth; 8. a molding device; 81. a movable plate; 82. a lifting frame; 83. a forming platform; 9. a roller; 10. a cross bar; 11. and (5) supporting the tube.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a 3D printer with a film stretching mechanism as shown in figures 1-8, which comprises a mounting base 1, wherein the positions, close to the front side and the rear side, of the top of the mounting base 1 are vertically and fixedly connected with mounting plates 2, a material tray 3 is arranged between the two mounting plates 2, the front side and the rear side of the material tray 3 are horizontally and fixedly connected with mounting strips 4, the mounting plates 2 at the positions corresponding to the mounting strips 4 are horizontally provided with first mounting grooves, the mounting strips 4 are slidably mounted in the first mounting grooves, the bottoms of the material tray 3 are provided with grooves, breathable films 5 are mounted in the grooves, the bottoms of the breathable films 5 are provided with tightening devices 6 for tightening the breathable films 5, the front side and the rear side of the material tray 3 are respectively provided with a positioning device 7 for positioning the tightening devices 6, one side of the material tray 3 is provided with a forming device 8 for matching the material tray 3, the forming device 8 comprises a movable plate 81, the mounting plates 2 corresponding to the front side and the rear side of the movable plate 81 are horizontally provided with second mounting grooves, the front side and the rear side of the movable plate 81 are respectively slidably mounted in the two second mounting grooves, the tops of the movable plate 81 are slidably mounted in the first mounting grooves, the movable plate 81 is fixedly provided with a lifting frame 82, and the lifting frame 82 is connected with a vertical lifting platform 83, and the lifting platform is connected to the fixed and is close to the fixed on one side of the lifting platform 83;
during printing, a material for printing is placed into the tray 3, then the lifting frame 82 is adjusted, so that the forming platform 83 can extend into the tray 3, 3D printing is performed by using raw materials in the tray 3, and in the printing process, gas can be introduced into the bottom of the breathable film 5 through the tightening device 6, so that the printed product can be conveniently subjected to timely release operation;
along with long-time printing, the ventilated membrane 5 can deform under the effect of gas to lead to the rate of tension of ventilated membrane 5 to weaken, can promote charging tray 3 this moment, make it along the direction motion of first mounting groove to shaping platform 83, at this in-process, along with charging tray 3 is promoted, the tight device 6 of charging tray 3 bottom can upwards extrude ventilated membrane 5 from ventilated membrane 5 bottom edge position, and positioner 7 then can lock the position after tight device 6 adjusts, thereby make ventilated membrane 5 can be strained by tight device 6 gradually, and then guarantee the release effect of ventilated membrane 5 to the printing product.
As shown in fig. 1-8, the tightening device 6 comprises a supporting plate 601, the positions, close to four corners, of the top of the supporting plate 601 are vertically and fixedly connected with limiting rods 602, limiting blocks are sleeved on the limiting rods 602 in a sliding manner, the limiting blocks are fixedly connected with the lateral side of the material tray 3, the top of the supporting plate 601 is fixedly connected with square inserting rings 603, one side, close to the forming device 8, of the inserting rings 603 is connected with an air inlet pipe 604, slot 605 matched with the inserting rings 603 are arranged on the groove wall of the groove top at the position corresponding to the inserting rings 603, supporting rings 606 are arranged on the inner side of the inserting rings 603, a plurality of telescopic rods 607 are vertically and fixedly connected between the two sides of the bottom of the supporting rings 606 and the supporting plate 601, first springs 608 are sleeved on the telescopic rods 607, supporting plates 609 are fixedly connected to the front side and the rear side of the bottom of the supporting rings 606, one side, which is away from the two supporting plates 609, bar-shaped holes 611 are formed by penetrating through the rectangular plates 610 along the two side directions, the top end of the bar hole 611 inclines towards the direction close to the center of the supporting ring 606, a deflector rod 612 is vertically and slidably inserted in the position, opposite to the right angle plate 610, of the front side and the rear side of the insert ring 603, a notch is formed at one end, close to the right angle plate 610, of the deflector rod 612, a fixed shaft 613 is fixedly connected between the front side inner wall and the rear side inner wall of the notch side, the fixed shaft 613 is slidably inserted in the bar hole 611 corresponding to the right angle plate 610, an inclined plane groove is formed at the top of the mounting base 1, the bottom groove wall of the inclined plane groove gradually inclines towards the direction close to the forming device 8, a supporting block 614 is arranged in the inclined plane groove, a sliding block 615 is fixedly connected to the front side and the rear side of the supporting block 614, a sliding groove is formed on the side wall of the inclined plane groove at the position corresponding to the sliding block 615, the sliding block 615 is slidably mounted in the corresponding sliding groove, the sliding groove is parallel to the bottom groove wall of the inclined plane groove, a second spring 616 is arranged at one side, close to the forming device 8, of the sliding block 615, two ends of the second spring 616 are fixedly connected with the sliding block 615 and the groove wall corresponding to the sliding groove respectively, stop rods 617 are vertically and fixedly connected to positions, close to the front side and the rear side, of the top of the supporting block 614, a plurality of cross rods 10 are fixedly connected to the inner side of the supporting ring 606, the cross rods 10 are vertically interwoven together, the top of the cross rod 10 is flush with the top of the supporting ring 606, a supporting tube 11 is sleeved on the part, located on the outer side of the inserting ring 603, of the driving rod 612 in a sliding mode, and the supporting tube 11 is vertically and fixedly connected with the inserting ring 603;
through the support ring 606 and the cross rod 10 at the inner side of the support ring 606, before printing, the top of the support ring 606 can be kept flush with the top of the insert ring 603 under the action of the pressure of the breathable film 5 due to the large surface tension of the breathable film 5, the deflector rod 612 and the stop rod 617 are kept in a staggered state, and when a printing material is placed into the inner side of the tray 3, the support force can be applied to the support ring 606 and the cross rod 10 from the bottom of the breathable film 5, so that the breathable film 5 can not downwards bulge under the action of the gravity of the printing material, and the tension of the breathable film 5 is ensured;
in the process that the forming platform 83 extends into the material tray 3 and 3D printing is carried out by utilizing the raw materials in the material tray 3, air can be introduced into the bottom of the breathable film 5 through the air inlet pipe 604 on the side surface of the insert ring 603, so that the breathable film 5 can conveniently carry out timely release operation on the printed product;
along with long-time printing operation, as the ventilated membrane 5 is subjected to upward blowing force of air in the printing process, the ventilated membrane 5 is raised upwards, so that the tension of the ventilated membrane 5 is weakened, the pressure applied to the supporting ring 606 by the ventilated membrane 5 is reduced along with the weakening of the tension of the ventilated membrane 5, at the moment, the supporting ring 606 can move upwards for a certain distance under the action of the first spring 608, along with the upward movement of the supporting ring 606, the supporting plate 609 can drive the rectangular plate 610 to move upwards along with the action of the supporting ring 606, along with the upward movement of the rectangular plate 610, the bar-shaped hole 611 can cooperate with the fixed shaft 613 to push the deflector 612 to move outwards of the supporting tube 11, and along with the movement of the deflector 612 outwards of the supporting tube 11, the free end of the deflector 612 is gradually overlapped with the stop lever 617, and at the moment, the tray 3 is pushed to move along the direction of the first mounting groove to the forming platform 83;
along with the movement of the tray 3, the tray 3 can drive the supporting plate 601, the insert ring 603 and the deflector 612 to move together through the limit rod 602, in the process, when the deflector 612 contacts with the stop lever 617, the deflector 612 can push the supporting block 614 to slide along the inclined plane groove through the stop lever 617, and along with the movement of the supporting block 614, the sliding block 615 gradually compresses the second spring 616 under the drive of the supporting block 614, and the top of the supporting block 614 can gradually push the supporting plate 601 upwards under the action of the inclined plane groove, so that the supporting plate 601 can drive the insert ring 603 to move upwards and gradually insert into the slot 605, and along with the gradual insertion of the insert ring 603 into the slot 605, the peripheral edge of the breathable film 5 can also gradually enter into the slot 605 under the pressure of the insert ring 603, so that the breathable film 5 is gradually tensioned, as the breathable film 5 is gradually tensioned, the pressure of the breathable film 5 to the supporting ring 606 is gradually increased, so that the supporting ring 606 can gradually move downwards under the action of ventilation, as the supporting ring 606 moves downwards, the two deflector rods 612 are gradually retracted into the supporting tube 11 under the action of the matching of the strip-shaped holes 611 and the fixed shafts 613, as the deflector rods 612 move inwards of the supporting tube 11, the deflector rods 612 are gradually separated from the stop rods 617, when the deflector rods 612 are completely separated from the stop rods 617, the supporting blocks 614 are restored to the original positions under the action of the second springs 616, the inserting ring 603 is locked at the current position under the action of the positioning device 7, and at the moment, the breathable film 5 keeps better surface tension under the action of the inserting ring 603, so that the release effect of the breathable film 5 on printed products is ensured;
in addition, because in the in-process of follow-up printing, the rate of tension of ventilated membrane 5 still can weaken because of long-time use, can repeat above-mentioned operation here to make ventilated membrane 5 further taut, and then when guaranteeing ventilated membrane 5 to the printing product release effect, can also prolong ventilated membrane 5's life.
As shown in fig. 2, fig. 6, fig. 7 and fig. 8, the positioning device 7 comprises a fixed plate 71, the fixed plate 71 is fixedly connected to the bottom edge position of the tray 3, the fixed plate 71 is inserted with a positioning pin 72 in a sliding manner along the front-back direction, the diameters of two ends of the positioning pin 72 are larger than the diameter of the middle section of the positioning pin 72, a third spring 73 is sleeved on one side of the positioning pin 72, close to the insert ring 603, of the positioning pin 72 is fixedly connected with a positioning block 74, the bottom surface of the positioning block 74 is in an inclined plane design, the outer side of the insert ring 603, which corresponds to the position of the positioning block 74, is provided with a vertical tooth socket, teeth 75 are arranged in the tooth socket, the teeth 75 are meshed with the positioning block 74, the height of the insert ring 603 is equal to the sum of the height of the supporting plate 609 and the thickness of the support ring 606, and when the top of the support ring 606 is leveled with the top of the insert ring 603, one end, which is far away from the right angle plate 610, of the support block 614 is not contacted with a stop lever 617, the maximum change amount of the support block 614 along the vertical direction is equal to the depth of the insert slot 605, and the distance of the maximum distance of the stop lever 612 is larger than the maximum distance 617;
when the supporting plate 601 drives the insert ring 603 to be gradually inserted into the slot 605 under the pushing action of the supporting plate 614, along with the gradual upward movement of the insert ring 603, the teeth 75 in the tooth grooves gradually move upward relative to the positioning block 74, meanwhile, along with the action force of the teeth 75 on the bottom inclined surface of the positioning block 74, the positioning block 74 pushes the positioning pin 72 to move away from the insert ring 603, the third spring 73 is gradually compressed, along with the gradual tensioning of the breathable film 5, the breathable film 5 gradually presses the supporting ring 606, when the supporting ring 606 drives the deflector 612 to shrink inwards towards the support pipe 11 through the fixing shaft 613 under the pressing action of the breathable film 5, the deflector 612 is gradually separated from the stop lever 617, when the top of the supporting ring 606 is level with the top of the insert ring 603 again, the deflector 612 is completely separated from the stop lever 617, at the moment, the supporting plate 614 can be clamped with the teeth 75 under the action of the third spring 73, the locking of the current position of the insert ring 603 is achieved, and the breathable film 5 can be tensioned under the action of the insert ring 603, and further the effect of the breathable film 5 is further guaranteed to be printed.
As shown in fig. 6-8, four storage grooves are formed in the bottom of the tray 3, the four storage grooves are parallel to four sides of the slot 605 respectively, the four storage grooves are located at the inner edge position of the slot 605, the rolling shaft 9 is rotatably mounted in the slot 605, and the bottom of the rolling shaft 9 is located outside the storage grooves;
in the process that the inserting ring 603 inserts the ventilated membrane 5 into the slot 605, along with the fact that the ventilated membrane 5 is gradually pressed into the slot 605, the ventilated membrane 5 slides against the bottom of the rolling shaft 9, and the rolling shaft 9 can start to rotate under the action of friction force of the ventilated membrane 5 on the ventilated membrane, so that sliding friction force between the ventilated membrane 5 and the bottom of the tray 3 is converted into rolling friction between the ventilated membrane 5 and the rolling shaft 9, and further abrasion of the ventilated membrane 5 due to overlarge friction force is avoided.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. 3D printer with stretch film mechanism, including installation base (1), its characterized in that: the device is characterized in that mounting plates (2) are vertically and fixedly connected to the positions, close to the front side and the rear side, of the top of the mounting base (1), a charging tray (3) is arranged between the two mounting plates (2), mounting strips (4) are horizontally and fixedly connected to the front side and the rear side of the charging tray (3), a first mounting groove is horizontally formed in the mounting plate (2) at the corresponding position of each mounting strip (4), the mounting strips (4) are slidably mounted in the first mounting groove, a groove is formed in the bottom of the charging tray (3), an air-permeable membrane (5) is mounted in the groove, tightening devices (6) for tightening the air-permeable membrane (5) are arranged at the bottom of the air-permeable membrane (5), positioning devices (7) for positioning the tightening devices (6) are arranged in the front side and the rear side of the charging tray (3), and one side of the charging tray (3) is provided with a forming device (8) for matching the charging tray (3);
the tightening device (6) comprises a supporting plate (601), limit rods (602) are vertically and fixedly connected to the positions, close to four corners, of the top of the supporting plate (601), limiting blocks are sleeved on the limit rods (602) in a sliding mode, side outer side faces of the limiting blocks and the tray (3) are fixedly connected, square inserting rings (603) are fixedly connected to the top of the supporting plate (601), air inlet pipes (604) are connected to one side, close to a forming device (8), of each inserting ring (603), slots (605) matched with the inserting rings (603) are formed in groove top groove walls at the positions corresponding to the inserting rings (603), supporting rings (606) are arranged on the inner sides of the inserting rings (603), a plurality of telescopic rods (607) are vertically and fixedly connected between the positions of the two sides of the bottom of the supporting rings (606) and the supporting plate (601), first springs (608) are sleeved on the telescopic rods (607), supporting plates (609) are fixedly connected to the positions of the front side and the back side of the bottom of the supporting rings (606), one side, which is close to the forming device (8), of each supporting plate (609) is fixedly connected with an air inlet pipe (604), a slot (605) which is matched with the inserting ring (603), the inserting rings (606) in a vertical direction, the vertical direction (610) is opposite to the front side of the inserting rings (611), a gap is formed at one end of the deflector rod (612) close to the right angle plate (610), a fixed shaft (613) is fixedly connected between the front side inner wall and the rear side inner wall of the gap side, the fixed shaft (613) is in sliding penetration connection with a strip-shaped hole (611) on the corresponding right angle plate (610), an inclined plane groove is formed at the top of the mounting base (1), the bottom groove wall of the inclined plane groove is gradually inclined towards the direction close to the forming device (8), a supporting block (614) is arranged in the inclined plane groove, sliding blocks (615) are fixedly connected to the front side and the rear side of the supporting block (614), sliding grooves are formed in the side walls of the inclined plane grooves at the positions corresponding to the sliding blocks (615), the sliding blocks (615) are slidably mounted in the corresponding sliding grooves, the sliding grooves are parallel to the bottom groove walls of the inclined plane grooves, a second spring (616) is arranged at one side of the sliding block (615) close to the forming device (8), two ends of the second spring (616) are respectively fixedly connected with the sliding blocks (615) and the groove walls corresponding to the sliding grooves, and stop rods (617) are vertically and fixedly connected to the positions of the top of the supporting block (614) close to the front side and the rear side.
The positioning device (7) comprises a fixed plate (71), the fixed plate (71) is fixedly connected to the edge position of the bottom of the material tray (3), the fixed plate (71) is inserted with a positioning pin (72) in a sliding way along the front-back direction, the diameters of two ends of the positioning pin (72) are larger than the diameter of the middle section of the positioning pin (72), a third spring (73) is sleeved on one side, close to the insert ring (603), of the positioning pin (72) close to the insert ring (603), a positioning block (74) is fixedly connected to one side, close to the insert ring (603), of the positioning block (72) is designed in an inclined plane, a vertical tooth socket is formed in the outer side of the insert ring (603) at the corresponding position of the positioning block (74), teeth (75) are arranged in the tooth socket, and the teeth (75) are meshed with the positioning block (74);
the inner side of the supporting ring (606) is fixedly connected with a plurality of cross bars (10), the cross bars (10) are vertically interwoven together, and the top of the cross bars (10) is flush with the top of the supporting ring (606).
2. A 3D printer with a film stretching mechanism according to claim 1, wherein: the forming device (8) comprises a movable plate (81), wherein the front side and the rear side of the movable plate (81) correspond to each other, the mounting plate (2) is horizontally provided with second mounting grooves, the front side and the rear side of the movable plate (81) are respectively slidably mounted in the two second mounting grooves, the top of the movable plate (81) is vertically and fixedly connected with a lifting frame (82), and one side, close to the material tray (3), of the lifting frame (82) is fixedly connected with a forming platform (83).
3. A 3D printer with a film stretching mechanism according to claim 2, wherein: four storage grooves are formed in the bottom of the material tray (3), the four storage grooves are parallel to four sides of the slot (605) respectively, the four storage grooves are located at the inner edge of the slot (605), the rolling shaft (9) is rotatably mounted in the slot (605), and the bottom of the rolling shaft (9) is located outside the storage grooves.
4. A 3D printer with a film stretching mechanism according to claim 1, wherein: the part of the deflector rod (612) positioned at the outer side of the insert ring (603) is sheathed with a supporting tube (11) in a sliding way, and the supporting tube (11) is vertically and fixedly connected with the insert ring (603).
5. The 3D printer with film stretching mechanism of claim 4, wherein: the height of the insert ring (603) is equal to the sum of the height of the supporting plate (609) and the thickness of the supporting ring (606), and when the top of the supporting ring (606) is level with the top of the insert ring (603), one end of the deflector rod (612) far away from the right angle plate (610) is just not contacted with the stop lever (617).
6. A 3D printer with a film stretching mechanism according to claim 5, wherein: when the supporting blocks (614) slide along the inclined grooves, the maximum change amount of the supporting blocks (614) along the vertical direction is equal to the depth of the slots (605), and the distance is larger than the maximum vertical distance from the top of the stop lever (617) to the deflector rod (612).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310098586.9A CN116061434B (en) | 2023-02-10 | 2023-02-10 | 3D printer with membrane stretching mechanism |
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| CN202310098586.9A CN116061434B (en) | 2023-02-10 | 2023-02-10 | 3D printer with membrane stretching mechanism |
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| CN116061434B true CN116061434B (en) | 2024-04-12 |
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| CN116061434A (en) | 2023-05-05 |
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