CN112743831A - Double-material forming workbench assembly for DLP photocuring 3D printing - Google Patents

Double-material forming workbench assembly for DLP photocuring 3D printing Download PDF

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Publication number
CN112743831A
CN112743831A CN202011447761.3A CN202011447761A CN112743831A CN 112743831 A CN112743831 A CN 112743831A CN 202011447761 A CN202011447761 A CN 202011447761A CN 112743831 A CN112743831 A CN 112743831A
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China
Prior art keywords
trough
base
threaded rod
groove body
strip
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Granted
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CN202011447761.3A
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Chinese (zh)
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CN112743831B (en
Inventor
朱协彬
陈志浩
王邦伦
鹿宪柯
李建生
朱传龙
华云涛
孙正君
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Anhui Polytechnic University
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Anhui Polytechnic University
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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
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/214—Doctor blades
    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/255—Enclosures for the building material, e.g. powder containers
    • 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
    • B29C64/379—Handling of additively manufactured objects, e.g. using robots
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)

Abstract

The invention discloses a double-material forming workbench assembly for DLP photocuring 3D printing, which belongs to the field of photocuring equipment and comprises a base and a trough, wherein a light transmitting opening is formed in the base, the trough which is in a rectangular structure is connected onto the base in a sliding manner, the top of the trough is open, a light transmitting window which is vertically aligned with the light transmitting opening is formed in the trough, a driving mechanism for driving the trough to move left and right is arranged on the base, the trough comprises a right trough body with a broken left end and a left trough body with a broken right end, and the broken part of the right trough body is connected with the broken part of the left trough body through a soft rubber connecting layer. According to the invention, through the arrangement of dislocation between the cured product and the feed liquid and reduction of the liquid level of the feed liquid, the product cured by the light beam generates smaller acting force with the feed liquid, and meanwhile, the phenomenon of hollowing between the cured product and the feed liquid can be avoided, so that the product can be rapidly subjected to demoulding after printing, and the printing quality of the product is ensured.

Description

Double-material forming workbench assembly for DLP photocuring 3D printing
Technical Field
The invention relates to the technical field of photocuring equipment, in particular to a double-material forming workbench assembly for DLP photocuring 3D printing.
Background
DLP photocuring molding can form one surface at one time, and the molding speed is high. With a high resolution projector and good molding quality resin, the 3D printed product has very high accuracy. The technology has the characteristics of high efficiency, wide adaptability, economy, energy conservation and environmental protection.
The existing photocuring equipment is characterized in that a plurality of products after being cured are extracted from a material liquid in a trough through a lifting mechanism, so that a large acting force is easily generated between the products after being cured and the material liquid when the products are extracted, the products after being cured are pulled, the quality of the products after being cured is influenced, and meanwhile, the demoulding efficiency of the products after being cured is also influenced.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a double-material forming workbench component for DLP photocuring 3D printing, which aims to solve the problems in the background technology.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
the double-material forming workbench assembly for DLP photocuring 3D printing comprises a base, a light transmitting opening, a trough and a light transmitting window, wherein the light transmitting opening is formed in the base, the trough is in a rectangular structure and is connected to the base in a sliding mode, the top of the trough is open, the trough is provided with the light transmitting window vertically aligned with the light transmitting opening, the base is provided with a driving mechanism for driving the trough to move left and right, the trough comprises a right trough body with a broken left end and a left trough body with a broken right end, the broken part of the right trough body is connected with the broken part of the left trough body through a soft rubber connecting layer, the soft rubber connecting layer is connected with the broken part in a sealing mode through a sealing glue, and the bottom end of the broken part of the right trough body is rotationally connected with the bottom; the bottom of the left end of the base is provided with a supporting plate in a forming mode, the side wall of the left end of the base is provided with a first telescopic mechanism which is arranged in an inclined mode and used for pulling the left groove body to rotate, and two end portions of the first telescopic mechanism are respectively connected with the bottom of the left end of the left groove body and the side wall of the left end of the base in a rotating mode through a second hinge seat;
be equipped with on the base and carry out floating scribble scraping mechanism to the inside feed liquid of silo, scribble scraping mechanism and locate the threaded rod three and the threaded rod four at silo both ends including the symmetry the threaded rod all sets up along the length direction of silo, and on every threaded rod equal thread bush be equipped with overlap joint piece two, two it all is equipped with the connecting rod that a level set up on the two opposite terminal surfaces of cup joint piece, two the tip of connecting rod is connected with concave type pole jointly, and two vertical poles on the concave type pole are connected with corresponding connecting rod respectively, the horizon bar of concave type pole bottom is parallel with the interior bottom of silo, and the horizon bar is located the inside of silo, two the threaded rod all is connected with the base through support two, and the end connection of one of them threaded rod has motor two, two the threaded rod passes through drive mechanism one and connects.
Preferably, bolt holes are formed in the two vertical rods on the concave rod at equal intervals, and the two vertical rods are connected through connecting rods corresponding to bolts.
Preferably, the top of backup pad is equipped with vertical setting and is used for carrying out the telescopic machanism two that supports to the bottom of taking place the left cell body when rotating, and the inner structure of telescopic machanism two is the same with the inner structure of telescopic machanism one, telescopic machanism includes the sleeve, locates the inside spring of sleeve with sleeve sliding connection's slide bar, one end are fixed, every the other end of spring all be equipped with the slide bar fixed connection of corresponding side, the tip of the sleeve and the slide bar on the telescopic machanism one rotates through articulated seat two and the left end bottom of left cell body, the left end lateral wall of base respectively to be connected, the top shaping of the slide bar on the telescopic machanism two is equipped with the hemispheroid, and the top of hemispheroid is tangent with the bottom of.
Preferably, the bottom thickness of right side cell body is greater than the bottom thickness of left cell body, the fixed bar stopper that is equipped with in bottom middle part of left side cell body, and the width direction setting along the silo of bar stopper to the bottom of bar stopper contacts with the top of base, light-permeable opening and light-permeable window do not align yet when the bar stopper has just slided on the base, the bar stopper is close to articulated seat one and is located the left side setting of articulated seat one, the corner on bar stopper bottom right side is equipped with arc end one, the left corner in base top is equipped with and holds two with arc end tangent arc.
Preferably, the base is provided with a contact switch positioned on the right side of the first arc-shaped end, the first arc-shaped end can be contacted with the contact switch when the trough moves rightwards, and the contact switch is used for controlling the concave rod on the coating and scraping mechanism to move rightwards.
Preferably, be equipped with two bar sliders that are T font structure on the base, the bar spout that supplies bar slider horizontal slip is seted up to the bottom of right side cell body, bar slider, bar spout all with the length direction parallel arrangement of silo, install the gyro wheel with the contact of bar spout inside wall on the bar slider.
Preferably, actuating mechanism locates the threaded rod one and the threaded rod two of silo both sides including the symmetry, the length direction setting of silo is followed to threaded rod one, threaded rod two, and the both ends of silo are fixed respectively and are equipped with the cover and connect piece one on corresponding threaded rod to every cover and connect piece one all with corresponding threaded rod threaded connection, every the threaded rod all is connected with the base through support one, and the end connection of one of them threaded rod has motor one, two connect through drive mechanism two between the threaded rod.
Preferably, drive mechanism one is the same with drive mechanism two's structure, drive mechanism locates the band pulley on every threaded rod including fixed cover, the band pulley horizontal alignment setting on threaded rod one, the threaded rod two, the band pulley horizontal alignment setting on threaded rod three, the threaded rod four, two band pulleys that every level was aligned all pass through the belt and connect.
Preferably, the top end of the disconnected part of the left groove body is provided with a limiting block closely attached to the top end of the disconnected end of the right groove body.
3. Advantageous effects
1. The driving mechanism of the invention can drive the trough to move left and right on the base when in work, the left trough body on the trough rotates around the rotating shaft on the first hinged seat under the action of pulling or supporting of the first telescopic mechanism, namely, when the trough moves left, the telescopic mechanism is stretched, the telescopic mechanism has a pulling effect on the bottom end of the left trough body, the left trough body rotates anticlockwise around the rotating shaft on the first hinged seat through the pulling of the telescopic mechanism on the bottom end of the left trough body, the right trough body on the trough still slides horizontally on the base, when the left trough body rotates anticlockwise, the horizontal position of the bottom in the left trough body is lower than the horizontal position of the bottom in the right trough body, and because the right trough body is communicated with the left trough body, the feed liquid in the right trough body can flow to the inside of the left trough body, so that the height of the feed liquid in the right trough body is reduced, when the trough moves rightwards under the driving of the driving mechanism, the left trough body is horizontally aligned with the right trough body under the pulling of the right trough body, so that a large amount of feed liquid gathered in the left trough body flows back to the inside of the right trough body, and conditions are provided for the next printing and forming of a solidified product;
in summary, in the design application, the trough is moved left and right by the driving mechanism, so that the condensation surface of the product after being solidified by the light beam is dislocated with the feed liquid which is not solidified, thereby reducing the acting force on the product after being solidified to be subjected to film removal from the feed liquid, facilitating the film removal of the product, meanwhile, the feed liquid can be continuously accumulated in the left trough body at a low level position, so that the solidified product can be dislocated with the feed liquid and can be separated from the feed liquid in the right trough body, thereby realizing the rapid film removal of the solidified product, and when the feed liquid in the left trough body is continuously accumulated, the condensation surface of the product after being solidified each time can be separated from the feed liquid, and is immersed in the feed liquid again before the next solidification, so as to prevent the condensation surface of the product after being solidified from generating empty drum with the feed liquid when being solidified next time, and affecting the manufacturing quality of the product, this kind of dislocation and the setting that reduces to the feed liquid level between through product and feed liquid, make the product after the light beam solidification produce less effort between with the feed liquid when, can also guarantee that the product after solidification at every turn can not appear and the feed liquid between produce the phenomenon of hollowing, thereby the product can be quick after having guaranteed to print takes off the membrane, the quality that the product was printed has still been guaranteed, reduce current product after the light beam solidification, only extract the product after will solidifying from the feed liquid through elevating system, the product that leads to after the solidification produces great effort between easy and the feed liquid when extracting, and cause the pulling to the product after just solidifying, influence the quality of product after the solidification, also influence the efficiency of taking off the membrane of product after the solidification simultaneously.
2. According to the invention, the concave rod between the third threaded rod and the fourth threaded rod can be driven to translate on the inner side of the trough through positive and negative rotation of the third threaded rod and the fourth threaded rod, the feed liquid stored in the trough can be spread and scraped through translation of the concave rod, so that the feed liquid in the trough can be spread and leveled before printing each time, a powerful condition is provided for printing of a product, and after the product is printed at one time, the concave rod can move leftwards (the printed product is lifted at the moment), so that the concave rod can shift the feed liquid below a condensation surface of the printed and solidified product, and the demoulding of the product is promoted.
3. The contact switch is arranged, so that the left groove body and the right groove body are horizontally aligned and then simultaneously move rightwards (at the moment, the light-transmitting opening is not aligned with the light-transmitting window, and the feed liquid gathered in the left groove body flows towards the right groove body), the concave rod on the coating and scraping mechanism is driven to move rightwards when the arc-shaped end on the strip-shaped limiting block contacts the contact switch, so that the feed liquid in the horizontally aligned left groove body and right groove body is coated and scraped, and the coating and scraping mechanism is rotationally controlled, so that the feed liquid can be effectively leveled, and the next product curing is facilitated.
4. The first telescopic mechanism can pull or support the left side of the bottom end of the left groove body so as to provide power for the rotation of the left groove body, the second telescopic mechanism is arranged so that the slide rod at the top end of the second telescopic mechanism can upwards support the left groove body which rotates anticlockwise (at the moment, the spring in the second telescopic mechanism is in a state of being extruded), so that the situation that the left groove body is quickly rotated in a short time due to the fact that the force for pulling the left groove body by the second telescopic mechanism is large is prevented, the stability of feed liquid in the left groove body is influenced, when the left groove body rotates clockwise, the left groove body can be quickly reset by upwards supporting the left groove body by the spring on the second telescopic mechanism, at the moment, the left groove body can be stably reset due to the limitation of the first telescopic mechanism on the left groove body, and in conclusion, the first telescopic mechanism is matched with the second telescopic mechanism, can make the rotation of left cell body more smooth-going, and left cell body when rotating, the tangent setting in accessible telescopic machanism two last slide bar top hemispheroids and left cell body bottom makes telescopic machanism two when effectively supporting left cell body, still effectual reduction the wearing and tearing between slide bar top and the left cell body.
Drawings
FIG. 1 is a schematic top view of the present invention
FIG. 2 is a schematic front view of the internal structure of the present invention;
FIG. 3 is a schematic top view of a portion of the present invention;
FIG. 4 is a left side view of the present invention;
FIG. 5 is a schematic diagram of the right view structure of the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 2;
fig. 7 is an enlarged schematic view of B in fig. 5.
Reference numerals: 1-base, 2-light-transmitting opening, 3-trough, 31-right trough body, 32-flexible glue connecting layer, 33-left trough body, 34-hinged seat I, 4-light-transmitting window, 5-strip-shaped sliding block, 6-strip-shaped sliding groove, 7-roller, 8-driving mechanism, 81-threaded rod I, 82-threaded rod II, 83-sleeved block I, 84-motor I, 85-bracket I, 9-belt wheel, 10-belt, 11-supporting plate, 12-telescopic mechanism I, 13-telescopic mechanism II, 14-sleeve, 15-sliding rod, 16-spring, 17-hemisphere, 18-hinged seat II, 19-strip-shaped limiting block, 191-arc-shaped end I, 20-arc-shaped end II, 21-threaded rod III, 22-four threaded rods, 23-two sleeve blocks, 24-connecting rods, 25-concave rods, 251-bolt holes, 252-bolts, 26-two supports, 27-two motors, 28-contact switches and 29-limiting blocks.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
The double-material forming workbench assembly for DLP photocuring 3D printing shown in the figures 1-7 comprises a base 1, a light transmitting opening 2, a trough 3 and a light transmitting window 4, wherein the base 1 is provided with the light transmitting opening 2, the base 1 is connected with the trough 3 in a rectangular structure in a sliding manner, the base 1 is provided with two strip-shaped sliders 5 in a T-shaped structure, the bottom end of a right trough body 31 is provided with a strip-shaped sliding chute 6 for the strip-shaped sliders 5 to slide left and right, the strip-shaped sliders 5 and the strip-shaped sliding chute 6 are both arranged in parallel with the length direction of the trough 3, the strip-shaped sliders 5 are provided with rollers 7 contacted with the inner side wall of the strip-shaped sliding chute 6, and the trough 3 and the base 1 can be limited through the sliding connection between the strip-shaped sliders 5 and the strip-shaped sliding chute;
the top of the trough 3 is open, the trough 3 is provided with a light transmission window 4 vertically aligned with the light transmission opening 2, the base 1 is provided with a driving mechanism 8 for driving the trough 3 to move left and right, the driving mechanism 8 comprises a first threaded rod 81 and a second threaded rod 82 which are symmetrically arranged at two sides of the trough 3, the first threaded rod 81 and the second threaded rod 82 are arranged along the length direction of the trough 3, two ends of the trough 3 are respectively and fixedly provided with a first sleeving block 83 sleeved on the corresponding threaded rods, each first sleeving block 83 is in threaded connection with the corresponding threaded rod, each threaded rod is connected with the base 1 through a first support 85, the end part of one threaded rod is connected with a first motor 84, the two threaded rods are connected through a second transmission mechanism, the first motor 84 can drive the first threaded rod 81 and the second threaded rod 82 to rotate simultaneously, and the first sleeving blocks 83 at two ends of the trough 3 are sleeved with the, the material groove 3 is enabled to move horizontally on the base 1;
the structure of the first transmission mechanism is the same as that of the second transmission mechanism, the first transmission mechanism comprises belt wheels 9 fixedly sleeved on each threaded rod, the belt wheels 9 on the first threaded rod 81 and the second threaded rod 82 are horizontally aligned, the belt wheels 9 on the third threaded rod 21 and the fourth threaded rod 22 are horizontally aligned, the two belt wheels 9 horizontally aligned are connected through a belt 10, and the first transmission mechanism and the second transmission mechanism are arranged so that the two horizontally aligned threaded rods can rotate simultaneously under the driving of a motor, thereby reducing the manufacturing cost of the device;
the trough 3 comprises a right trough body 31 with a broken left end and a left trough body 33 with a broken right end, the broken part of the right trough body 31 is connected with the broken part of the left trough body 33 through a soft rubber connecting layer 32, the soft rubber connecting layer 32 is hermetically connected with the broken part through sealant, the bottom end of the broken part of the right trough body 31 is rotatably connected with the bottom end of the broken part of the left trough body 33 through a first hinge seat 34, a limiting block 29 tightly attached to the top end of the broken end of the right trough body 31 is arranged at the top end of the broken part of the left trough body 33, and when the left trough body 33 is rotated clockwise to reset, the limiting block 29 can limit the left trough body 33, so that the left trough body 33 is exactly horizontally aligned with the right trough body 31;
the left end bottom of the base 1 is provided with a supporting plate 11 in a forming mode, the left end side wall of the base 1 is provided with a first telescopic mechanism 12 which is obliquely arranged and used for pulling the left groove body 33 to rotate, two end portions of the first telescopic mechanism 12 are respectively connected with the left end bottom of the left groove body 33 and the left end side wall of the base 1 in a rotating mode through a second hinge seat 18, a second telescopic mechanism 13 which is vertically arranged and used for supporting the bottom end of the left groove body 33 in the rotating mode is arranged at the top end of the supporting plate 11, the internal structure of the second telescopic mechanism 13 is the same as that of the first telescopic mechanism 12, the telescopic mechanism comprises a sleeve 14, a sliding rod 15 in sliding connection with the sleeve 14, springs 16 of which one end is fixedly arranged inside the sleeve 14, the other end of each spring 16 is fixedly connected with the corresponding sliding rod 15, and the end portions of the sleeve 14 and the sliding rod 15 on the first telescopic mechanism 12 are respectively connected with the, The side wall of the left end of the base 1 is rotationally connected, a hemisphere 17 is formed at the top end of a sliding rod 15 on a telescopic mechanism II 13, the top end of the hemisphere 17 is tangent to the bottom end of a left groove body 33, the telescopic mechanism I12 can pull or support the left side of the bottom end of the left groove body 33 to provide power for the rotation of the left groove body 33, the sliding rod 15 at the top end of the telescopic mechanism II 13 can support the left groove body 33 which rotates anticlockwise upwards (at the moment, a spring inside the telescopic mechanism II 13 is in an extruded state), so that the situation that the force for pulling the left groove body 33 by the telescopic mechanism I12 is large, the left groove body 33 rotates rapidly in a short time, the stability of liquid inside the left groove body 33 is affected, and when the left groove body 33 rotates clockwise, the spring 16 on the telescopic mechanism II 13 can support the left groove body 33 upwards, the left groove body 33 can be reset quickly, the left groove body 33 can be reset stably by limiting the left groove body 33 through the first telescopic mechanism 12, in sum, the rotation of the left groove body 33 can be smoother through the mutual matching of the first telescopic mechanism 12 and the second telescopic mechanism 13, and when the left groove body 33 rotates, the abrasion between the top end of the slide rod 15 and the left groove body 33 can be effectively reduced while the second telescopic mechanism 13 effectively supports the left groove body 33 through the arrangement that the hemisphere 17 at the top end of the slide rod 15 on the second telescopic mechanism 13 is tangent to the bottom end of the left groove body 33;
the bottom thickness of the right groove body 31 is larger than that of the left groove body 33, the middle part of the bottom end of the left groove body 33 is fixedly provided with a strip-shaped limiting block 19, the strip-shaped limiting block 19 is arranged along the width direction of the trough 3, the bottom end of the strip-shaped limiting block 19 is contacted with the top end of the base 1, the light transmission opening 2 is not aligned with the light transmission window 4 when the strip-shaped limiting block 19 just slides on the base 1, the strip-shaped limiting block 19 is arranged close to the first hinge seat 34 and positioned at the left side of the first hinge seat 34, the corner at the right side of the bottom end of the strip-shaped limiting block 19 is provided with a first arc end 191, the corner at the left side of the top end of the base 1 is provided with a second arc end 20 tangent to the first arc end 191, the bottom thickness of the right groove body 31 is larger than that of the bottom of the, when the trough 3 moves towards the left and right direction, the time that the left trough body 33 on the trough 3 is in a horizontal state can be prolonged through the contact between the strip-shaped limiting block 19 and the base 1, namely when the left trough body 33 moves towards the left, the left trough body 33 is in a horizontal state all the time when the strip-shaped limiting block 19 is not separated from the top end of the base 1, the spring 16 on the first telescopic mechanism 12 is in a stretched state at the moment, namely the pulling force of the spring 16 on the bottom end of the left trough body 33 is continuously increased, so that power is provided for the anticlockwise rotation of the left trough body 33, in addition, when the left trough body 33 rotates clockwise and is just aligned with the right trough body 31 horizontally under the pulling of the right trough body 31, the light transmission opening 2 is not aligned with the light transmission window 4, at the moment, through the simultaneous movement of the right trough body 31 and the left trough body 33 after alignment, conditions are provided for the feed liquid in the left trough body, namely, a period of time is provided before the light-transmitting opening 2 and the light-transmitting window 4 are aligned, so that the material liquid in the right groove body 31 and the left groove body 33 can be at the same horizontal height, the printing quality of the product is ensured, and the rotation of the strip-shaped limiting block 19 at the corner of the left end of the base 1 is facilitated through the tangency of the arc-shaped end one 191 and the arc-shaped end two 20;
the contact switch 28 is arranged on the right side of the arc-shaped end 191 on the base 1, the arc-shaped end 191 is contacted with the contact switch 28 when the trough 3 moves rightwards, the contact switch 28 is used for controlling the concave rod 25 on the coating and scraping mechanism to move rightwards, the position of the contact switch 28 is arranged, when the left trough body 33 and the right trough body 31 move rightwards simultaneously after being horizontally aligned (at the moment, the light-transmitting opening 2 is not aligned with the light-transmitting window 4, and the material liquid gathered in the left trough body 33 flows into the right trough body 31), the arc-shaped end 191 on the strip-shaped limiting block 19 is contacted with the contact switch 28 to drive the concave rod 25 on the coating and scraping mechanism to move right, so as to carry out coating type leveling on the feed liquid in the left groove body 33 and the right groove body 31 which are aligned horizontally, the rotation control of the coating and scraping mechanism can effectively level feed liquid, thereby being beneficial to the solidification of the next product;
the base 1 is provided with a coating and scraping mechanism for leveling feed liquid in the trough 3, the coating and scraping mechanism comprises a third threaded rod 21 and a fourth threaded rod 22 which are symmetrically arranged at two ends of the trough 3, the two threaded rods are all arranged along the length direction of the trough 3, each threaded rod is provided with a second splicing block 23 in a threaded sleeve manner, the opposite end faces of the two second splicing blocks 23 are respectively provided with a connecting rod 24 which is horizontally arranged, the end parts of the two connecting rods 24 are commonly connected with a concave rod 25, two vertical rods on the concave rod 25 are respectively connected with the corresponding connecting rods 24, a horizontal rod at the bottom end of the concave rod 25 is parallel to the inner bottom part of the trough 3 and is positioned in the trough 3, the two threaded rods are both connected with the base 1 through a second support 26, the end part of one threaded rod is connected with a second motor 27, the two threaded rods are connected through a first transmission mechanism, bolt holes 251 are arranged on the two vertical rods on the, and two vertical poles are all connected through the corresponding connecting rod 24 of bolt 252, and the setting of a plurality of keyhole 251 on two vertical poles on the concave pole 25 makes people can carry out corresponding regulation according to the degree of depth of the inside feed liquid of silo 3 to the degree of depth that the horizontal pole of bottom immerses the inside feed liquid of silo 3 on the concave pole 25 to this makes concave pole 25 can both scribble the stirring of scraping formula to the feed liquid that is close to product condensation surface position when removing at every turn.
The specific application process of the double-material forming workbench assembly for DLP photocuring 3D printing is as follows: when the device is used, firstly, the depth of the horizontal rod at the upper bottom of the concave rod 25, which is immersed into the material liquid in the trough 3, is correspondingly adjusted according to the depth of the material liquid in the trough 3, namely, the depth of the horizontal rod at the upper bottom of the concave rod 25, which is immersed into the material liquid in the trough 3, is correspondingly adjusted according to the depth of the material liquid in the trough 3 through the arrangement of the plurality of bolt holes 251 on the two vertical rods on the concave rod 25, so that the concave rod 25 can perform scraping type leveling on the material liquid close to the condensation surface of a product during each movement;
secondly, the first motor 84 can drive the first two threaded rods 81 and the second threaded rod 82 to rotate simultaneously, the first trough 3 can be sleeved with the threaded rods through the first sleeving blocks 83 at the two ends of the trough 3, the trough 3 can move leftwards on the base 1, the first telescopic mechanism 12 can be stretched when the trough 3 moves leftwards, the first telescopic mechanism 12 can have a pulling effect on the bottom end of the left trough body 33, the left trough body 33 can rotate anticlockwise around a rotating shaft on the first hinging seat 34 through the pulling of the first telescopic mechanism 12 on the bottom end of the left trough body 33, the right trough body 31 on the trough 3 still slides horizontally on the base 1, when the left trough body 33 rotates anticlockwise, the horizontal position of the bottom in the left trough body 33 is lower than the horizontal position of the bottom in the right trough body 31, and because the right trough body 31 is communicated with the left trough body 33, the feed liquid in the right trough body 31 can flow towards the inside of the left trough body 33, therefore, the height of the liquid in the right groove body 31 is reduced, when the trough 3 moves rightwards under the reverse driving of the first threaded rod 81 and the second threaded rod 82, the left groove body 33 is horizontally aligned with the right groove body 31 under the pulling of the right groove body 31, so that a large amount of liquid gathered in the left groove body 33 flows back to the right groove body 31, and conditions are provided for the next printing and forming of a solidified product;
when the trough 3 moves left and right, the strip-shaped limiting block 19 fixed at the bottom end of the left trough body 33 can contact with the top end of the base 1, so that when the trough 3 moves left and right, the time that the left trough body 33 on the trough 3 is in a horizontal state can be prolonged through the contact between the strip-shaped limiting block 19 and the base 1, namely when the left trough body 33 moves left, the left trough body 33 is not separated from the top end of the base 1 yet, the left trough body 33 is always in a horizontal state, at the moment, the spring 16 on the first telescopic mechanism 12 is in a stretched state, namely, the pulling force of the spring 16 on the bottom end of the left trough body 33 is continuously increased, so as to provide power for the anticlockwise rotation of the left trough body 33, in addition, when the left trough body 33 rotates clockwise and is pulled by the right trough body 31 to be exactly horizontally aligned with the right trough body 31, the light transmission opening 2, at this time, through the simultaneous movement of the right groove body 31 and the left groove body 33 after the alignment, conditions are provided for the feed liquid in the left groove body 33 to enter the right groove body 31 sufficiently, namely, a period of time exists before the light-transmitting opening 2 and the light-transmitting window 4 are aligned, so that the feed liquid in the right groove body 31 and the feed liquid in the left groove body 33 can be at the same horizontal height, the printing quality of a product is ensured, and the rotation of the strip-shaped limiting block 19 at the left end corner of the base 1 is facilitated through the tangency of the first arc-shaped end 191 and the second arc-shaped end 20;
when the left groove body 33 rotates, the rotation of the left groove body 33 is smoother through the mutual matching of the first telescopic mechanism 12 and the second telescopic mechanism 13, and when the left groove body 33 rotates, the abrasion between the top end of the slide bar 15 and the left groove body 33 is effectively reduced while the second telescopic mechanism 13 effectively supports the left groove body 33 through the arrangement that the hemispheroid 17 at the top end of the slide bar 15 on the second telescopic mechanism 13 is tangent to the bottom end of the left groove body 33;
when the trough 3 moves left and right, the threaded rod I81 and the threaded rod II 82 are driven to rotate through the work of the motor II 27, and the concave rod 25 is connected with the threaded rod through the sleeving block II 23 in a threaded manner, so that the concave rod 25 is driven by the sleeving block II 23 to translate in the trough 3, the feed liquid stored in the trough 3 can be leveled in a scraping manner through the translation of the concave rod 25, the feed liquid in the trough 3 can be leveled before printing at each time, a powerful condition is provided for the printing of a product, and after the product is printed at one time, the concave rod 25 can move leftwards through the concave rod 25 (the printed product is lifted at the moment), so that the concave rod 25 can toggle the feed liquid below the condensation surface of the printed and solidified product, the demoulding of the product is promoted, the feed liquid can be leveled effectively through the position setting of the contact switch 28, the left groove body 33 and the right groove body 31 are enabled to move rightwards after being horizontally aligned (at the moment, the light-transmitting opening 2 is not aligned with the light-transmitting window 4, the feed liquid gathered in the left groove body 33 flows towards the right groove body 31), the first arc-shaped end 191 on the strip-shaped limiting block 19 drives the concave rod 25 on the coating and scraping mechanism to move rightwards when contacting the contact switch 28, so that the left groove body 33 and the feed liquid in the right groove body 31 which are horizontally aligned are coated and scraped to be leveled, the coating and scraping mechanism is rotationally controlled, the feed liquid can be leveled effectively, the next product curing is facilitated, and therefore the using process of the double-material forming workbench assembly for DLP photocuring 3D printing is completed.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (9)

  1. The double-material forming workbench assembly for DLP photocuring 3D printing comprises a base (1), a light-transmitting opening (2), a trough (3) and a light-transmitting window (4), wherein the light-transmitting opening (2) is arranged on the base (1), the trough (3) which is of a rectangular structure is connected to the base (1) in a sliding manner, the top of the trough (3) is open, the light-transmitting window (4) which is vertically aligned with the light-transmitting opening (2) is arranged on the trough (3), a driving mechanism (8) which drives the trough (3) to move left and right is arranged on the base (1), and the double-material forming workbench assembly is characterized in that the trough (3) comprises a right trough body (31) with a broken left end and a left trough body (33) with a broken right end, the broken part of the right trough body (31) is connected with the broken part of the left trough body (33) through a soft rubber connecting layer (32), and the soft rubber connecting layer (, the bottom end of the disconnected part of the right groove body (31) is rotatably connected with the bottom end of the disconnected part of the left groove body (33) through a first hinge seat (34); a supporting plate (11) is formed at the bottom of the left end of the base (1), a first telescopic mechanism (12) which is obliquely arranged and used for pulling the left groove body (33) to rotate is arranged on the side wall of the left end of the base (1), and two end parts of the first telescopic mechanism (12) are respectively in rotating connection with the bottom of the left end of the left groove body (33) and the side wall of the left end of the base (1) through a second hinge seat (18);
    be equipped with on base (1) and carry out floating scribbling of silo (3) inside feed liquid and scrape the mechanism, scribble and scrape the mechanism and locate three (21) of threaded rod and four (22) of threaded rod at silo (3) both ends including the symmetry, two the threaded rod all sets up along the length direction of silo (3), and on every threaded rod all the thread bush be equipped with overlap joint piece two (23), two on the terminal surface in opposite directions of overlap joint piece two (23) all be equipped with a connecting rod (24) that the level set up, two the tip of connecting rod (24) is connected with concave pole (25) jointly, and two vertical poles on concave pole (25) are connected with corresponding connecting rod (24) respectively, the horizon bar of concave pole (25) bottom is parallel with the interior bottom of silo (3), and the horizon bar is located the inside of silo (3), two the threaded rod all is connected with base (1) through support two (26), and the end part of one of the threaded rods is connected with a second motor (27), and the two threaded rods are connected through a first transmission mechanism.
  2. 2. The DLP photocuring 3D printing bi-material forming workbench assembly as claimed in claim 1, wherein two vertical rods on the female rod (25) are provided with bolt holes (251) at equal intervals, and are connected through corresponding connecting rods (24) of bolts (252).
  3. 3. The DLP photocuring 3D printing double-material forming workbench assembly as claimed in claim 1, wherein the top end of the support plate (11) is provided with a second telescoping mechanism (13) which is vertically arranged and used for supporting the bottom end of the left groove body (33) when rotating, the internal structure of the second telescoping mechanism (13) is the same as that of the first telescoping mechanism (12), the telescoping mechanism comprises a sleeve (14), a sliding rod (15) which is in sliding connection with the sleeve (14) and a spring (16) with one end fixedly arranged inside the sleeve (14), the other end of each spring (16) is fixedly connected with the sliding rod (15) on the corresponding side, the ends of the sleeve (14) and the sliding rod (15) on the first telescoping mechanism (12) are respectively in rotating connection with the bottom of the left end of the left groove body (33) and the side wall of the left end of the base (1) through a second hinged seat (18), and a hemisphere (17) is formed at the top end of the sliding rod (15) on the second telescopic mechanism (13), and the top end of the hemisphere (17) is tangent to the bottom end of the left groove body (33).
  4. 4. The DLP photocuring 3D printing bi-material forming table assembly of claim 1, it is characterized in that the bottom thickness of the right groove body (31) is larger than that of the left groove body (33), a strip-shaped limiting block (19) is fixedly arranged in the middle of the bottom end of the left trough body (33), the strip-shaped limiting block (19) is arranged along the width direction of the trough (3), the bottom end of the strip-shaped limiting block (19) is contacted with the top end of the base (1), the light-transmitting opening (2) is not aligned with the light-transmitting window (4) when the strip-shaped limiting block (19) just slides on the base (1), the strip-shaped limiting block (19) is arranged close to the first hinged seat (34) and on the left side of the first hinged seat (34), an arc-shaped end I (191) is arranged at the corner on the right side of the bottom end of the strip-shaped limiting block (19), and a second arc-shaped end (20) tangent to the first arc-shaped end (191) is arranged at the corner of the left side of the top end of the base (1).
  5. 5. The DLP photocuring 3D printing bi-material forming table assembly according to claim 4, wherein the base (1) is provided with a contact switch (28) at the right side of the first arc-shaped end (191), the first arc-shaped end (191) is contacted with the contact switch (28) when the trough (3) moves rightwards, and the contact switch (28) is used for controlling the concave rod (25) on the coating and scraping mechanism to move rightwards.
  6. 6. The DLP photocuring 3D printing double-material forming workbench assembly according to claim 1, characterized in that two strip-shaped sliding blocks (5) with a T-shaped structure are arranged on the base (1), a strip-shaped sliding groove (6) for the strip-shaped sliding blocks (5) to slide left and right is formed in the bottom end of the right groove body (31), the strip-shaped sliding blocks (5) and the strip-shaped sliding groove (6) are arranged in parallel with the length direction of the trough (3), and a roller (7) in contact with the inner side wall of the strip-shaped sliding groove (6) is arranged on the strip-shaped sliding blocks (5).
  7. 7. The DLP photocuring 3D printing double-material forming workbench assembly as claimed in claim 1, wherein the driving mechanism (8) comprises a first threaded rod (81) and a second threaded rod (82) which are symmetrically arranged at two sides of the trough (3), the first threaded rod (81) and the second threaded rod (82) are arranged along the length direction of the trough (3), two ends of the trough (3) are respectively and fixedly provided with a first sleeving block (83) sleeved on the corresponding threaded rod, each first sleeving block (83) is in threaded connection with the corresponding threaded rod, each threaded rod is connected with the base (1) through a first bracket (85), the end of one threaded rod is connected with a first motor (84), and the two threaded rods are connected through a second transmission mechanism.
  8. 8. The DLP photocuring 3D printing bi-material forming table assembly according to claim 7, wherein the first transmission mechanism and the second transmission mechanism have the same structure, the transmission mechanism comprises belt wheels (9) fixedly sleeved on each threaded rod, the belt wheels (9) on the first threaded rod (81) and the second threaded rod (82) are horizontally aligned, the belt wheels (9) on the third threaded rod (21) and the fourth threaded rod (22) are horizontally aligned, and each horizontally aligned two belt wheels (9) are connected through a belt (10).
  9. 9. The DLP photocuring 3D printing double-material forming workbench assembly as recited in claim 1, wherein the top end of the broken part of the left groove body (33) is provided with a limit block (29) closely attached to the top end of the broken end of the right groove body (31).
CN202011447761.3A 2020-12-09 2020-12-09 Double-material forming workbench assembly for DLP photocuring 3D printing Active CN112743831B (en)

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1942117A (en) * 2004-04-06 2007-04-04 Wm.雷格利Jr.公司 Comestible product dispensers and methods of making and using same
CN202879933U (en) * 2012-07-11 2013-04-17 湖北美术学院 Compressible packing box
CN103264812A (en) * 2013-05-27 2013-08-28 南通纺织职业技术学院 Multi-purpose packing box suitable for regular or irregular objects and manufacturing method of multi-purpose packing box
CN203994735U (en) * 2014-08-29 2014-12-10 广州丽格打印耗材有限公司 Novel printer
CN105965890A (en) * 2016-05-16 2016-09-28 中国科学院兰州化学物理研究所 Double-material molding workbench assembly used for digital light processing (DLP) photocuring 3D printing
CN205686740U (en) * 2016-06-27 2016-11-16 湖北京华彩印有限公司 Double opening pushes away symmetrical expression packaging
CN206265489U (en) * 2016-11-18 2017-06-20 温州商学院 A kind of packing box
CN108724701A (en) * 2018-08-06 2018-11-02 岭南师范学院 A kind of 3D printer
CN109732907A (en) * 2019-01-10 2019-05-10 何岷洪 A kind of 3D printing equipment
CN110103466A (en) * 2019-06-15 2019-08-09 大理大学 3D printing structure and its Method of printing
AT16432U1 (en) * 2018-04-10 2019-09-15 Progress Maschinen & Automation Ag Device for producing at least one three-dimensional component for the construction industry
CN211968426U (en) * 2020-04-01 2020-11-20 江苏锐辰光电技术有限公司 Quantitative supplementary resin self-cleaning is from type membrane 3D printer platform

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1942117A (en) * 2004-04-06 2007-04-04 Wm.雷格利Jr.公司 Comestible product dispensers and methods of making and using same
CN202879933U (en) * 2012-07-11 2013-04-17 湖北美术学院 Compressible packing box
CN103264812A (en) * 2013-05-27 2013-08-28 南通纺织职业技术学院 Multi-purpose packing box suitable for regular or irregular objects and manufacturing method of multi-purpose packing box
CN203994735U (en) * 2014-08-29 2014-12-10 广州丽格打印耗材有限公司 Novel printer
CN105965890A (en) * 2016-05-16 2016-09-28 中国科学院兰州化学物理研究所 Double-material molding workbench assembly used for digital light processing (DLP) photocuring 3D printing
CN205686740U (en) * 2016-06-27 2016-11-16 湖北京华彩印有限公司 Double opening pushes away symmetrical expression packaging
CN206265489U (en) * 2016-11-18 2017-06-20 温州商学院 A kind of packing box
AT16432U1 (en) * 2018-04-10 2019-09-15 Progress Maschinen & Automation Ag Device for producing at least one three-dimensional component for the construction industry
CN108724701A (en) * 2018-08-06 2018-11-02 岭南师范学院 A kind of 3D printer
CN109732907A (en) * 2019-01-10 2019-05-10 何岷洪 A kind of 3D printing equipment
CN110103466A (en) * 2019-06-15 2019-08-09 大理大学 3D printing structure and its Method of printing
CN211968426U (en) * 2020-04-01 2020-11-20 江苏锐辰光电技术有限公司 Quantitative supplementary resin self-cleaning is from type membrane 3D printer platform

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