CN115157664B - Pressure intelligent control type photo-curing 3D printer - Google Patents
Pressure intelligent control type photo-curing 3D printer Download PDFInfo
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- CN115157664B CN115157664B CN202210861978.1A CN202210861978A CN115157664B CN 115157664 B CN115157664 B CN 115157664B CN 202210861978 A CN202210861978 A CN 202210861978A CN 115157664 B CN115157664 B CN 115157664B
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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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
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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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/245—Platforms or substrates
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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
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The application relates to the technical field of 3D printing, in particular to a pressure intelligent control type photo-curing 3D printer which comprises a bottom plate, a resin pool, a printing head, a lifting device, a forming platform, a belt, a winding device, a reset device and a pressure sensor, wherein the printing head is arranged right above the resin pool, the lifting device is used for controlling the lifting of the printing head, the forming platform is arranged at the bottom of the printing head, the downward end of the printing head is provided with a groove, the forming platform is slidably arranged in the groove of the printing head, the belt is movably matched with the printing head, the winding device is fixedly arranged outside the printing head, the winding device is fixedly matched with one end of the belt, the reset device is slidably matched with the printing head, the reset device is fixedly matched with one end of the belt, which is positioned in the groove of the printing head, and the pressure sensor is fixedly arranged inside a fixing seat. The application realizes the function that the forming platform can stop working when foreign matters exist on the workpiece on the premise of not influencing the normal working of the forming platform and giving the pressure to the workpiece.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a pressure intelligent control type photo-curing 3D printer.
Background
The 3D printer is also called as a three-dimensional printer (3 DP), is a cumulative manufacturing technology, namely a machine of a rapid prototyping technology, is based on a digital model file, and is prepared by applying special resin, powdery metal or plastic and other bondable materials, irradiating the bondable materials by using ultraviolet light or other light sources in a specific wavelength range and initiating photochemical reaction, and printing a layer of bonding materials layer by layer to solidify the bonding materials layer by layer to obtain an object to be shaped. At present, most of common 3D printers adopt photosensitive resin as an adhesive material, and the photosensitive resin is solidified and molded by matching a light source through reciprocating relative sliding between a molding platform and a resin pool, but in the reciprocating sliding of the molding platform, whether residual solid foreign matters exist in the resin pool or not cannot be detected, or the declining numerical value is deviated, so that the molding platform is declined when printing is caused, and is tightly pressed on the foreign matters and the resin pool, so that the pressure of the resin pool is overlarge, and a printing body and the resin pool are damaged.
Chinese patent CN202123390971.6 discloses a photocuring 3D printer with pressure detection device, sets up pressure sensor between resin pond and platen, makes the gravity in resin pond exert on pressure sensor's detection end, and in the printing process, whether through pressure sensor detection real-time supervision excessive pressure, in case there is the condition of excessive pressure just stops immediately, avoids destroying printing body and resin pond. However, in the using process, the pressure sensor works due to the fact that the forming platform and the foreign matters in the resin pool are required to be subjected to pressure change, and the printing body and the resin pool are damaged even when the forming platform stops working due to the fact that the foreign matters in the resin pool are extruded with the forming platform when the pressure sensor works.
Disclosure of Invention
To above-mentioned problem provides a pressure intelligence accuse formula photocuring 3D printer, and the force transmission of vertical direction gives pressure sensor when appearing the foreign matter on will printing the piece through shaping platform, belt and reset assembly cooperation, makes the printing during operation belt can not shelter from shaping platform through coiling mechanism and reset device.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the utility model provides a pressure intelligence accuse formula photocuring 3D printer, including the bottom plate, the resin pond, the setting is at the printing head directly over the resin pond, the elevating gear that the control printing head goes up and down and the shaping platform of setting in the printing head bottom, still include the belt, the coiling mechanism, resetting means and pressure sensor, the one end of printing head decurrent is provided with the recess, shaping platform slides and sets up in the recess of printing head, the slip direction of shaping platform is parallel with the slip direction of printing head, belt and printing head movable fit, the one end of belt sets up in the outside of printing head, the other end of belt sets up in the recess of printing head, the belt that sets up in the recess of printing head sets up in the below of shaping platform, the belt that sets up in the recess of printing head keeps parallel with shaping platform, the coiling mechanism is fixed to be set up in the outside of printing head with the belt, the one end fixed fit of coiling mechanism is followed to the belt, resetting means and the one end fixed fit in the recess of printing head, resetting means and the one end fixed with the resetting means that is in the belt, resetting means and the setting up respectively in the recess of printing head, the one end of resetting means is kept away from each other, the setting up in the fixed seat is kept away from in the pressure sensor in the direction of setting up at the pressure sensor, the fixed side is kept away from in the pressure sensor.
Preferably, the printing head comprises a connecting end, a fixed shell and a linear moving device, wherein the connecting end is fixedly matched with the output end of the lifting device, the fixed shell is integrally in a T-shaped sleeve shape, the fixed shell is fixedly matched with the connecting end, the fixed shell is arranged between the connecting end and the resin pool, the axis of the fixed shell is parallel to the moving direction of the lifting device, the number of the linear moving devices is two, the linear moving devices are fixedly arranged on the inner wall of the fixed shell, the two linear moving devices are arranged in a mirror image mode inside the fixed shell, the output end of the linear moving device faces to the lower side, and the output end of the linear moving device is fixedly matched with the forming platform.
Preferably, the fixed shell is close to one end of the coiling mechanism and is provided with a long-strip through hole, the long-strip through hole and the belt work in a matching mode, and the penetrating direction of the long-strip through hole is perpendicular to the main surface of the forming platform.
Preferably, the winding device comprises a driving motor, a driving roller and a driving belt, wherein the driving motor is fixedly arranged outside the fixed shell, the driving roller is rotatably arranged outside the fixed shell, gears are arranged at two ends of the driving roller, one end of the driving belt is in transmission connection with the driving roller, the other end of the driving belt is in transmission connection with the driving motor, and one end of the belt outside the fixed shell is fixedly matched with the driving roller.
Preferably, the winding device further comprises a driven roller, the driven roller is rotatably arranged in the fixed shell and far away from the position of the pressure sensor, the driven roller is arranged below the forming platform, the axis of the driven roller is parallel to the axis of the driving roller, and the belt and the driven roller are matched for working.
Preferably, the resetting means comprises two first fixing plates and tension springs, the first fixing plates are in sliding fit with the fixing shell, the sliding directions of the first fixing plates are parallel to the main surface of the forming platform, the two first fixing plates are arranged in a mirror image mode inside the fixing shell, the first fixing plates are arranged below the forming platform and are fixedly matched with the belt, the tension springs are arranged at one ends, far away from the driving roller, of the first fixing plates, the axes of the tension springs are parallel to the sliding directions of the first fixing plates, and the pressure sensor is arranged below the first fixing plates.
Preferably, the whole L-shaped fixed plate, the reset device further comprises a limit bolt, the limit bolt is arranged on the first fixed plate, a first limit long groove matched with the limit bolt is formed in the fixed shell, and the length direction of the first limit long groove is parallel to the length direction of the fixed shell.
Preferably, the resetting device further comprises a second fixing plate and a limiting column, two ends of the second fixing plate are respectively and fixedly matched with the two first fixing plates, the second fixing plate is integrally U-shaped, the opening end of the second fixing plate faces towards the direction close to the belt, the second fixing plate is in contact with the pressure sensor, the limiting column is fixedly matched with one end, close to the belt, of the tension spring, the axis of the limiting column is parallel to the axis of the tension spring, the limiting column is matched with the second fixing plate to work, and the tension spring penetrates through the whole second fixing plate.
Preferably, the first fixing plate is provided with a second limiting long groove matched with the limiting bolt, the length direction of the second limiting long groove is perpendicular to the main surface of the forming platform, the reset device further comprises springs, the number of the springs is equal to that of the first fixing plate, the springs are arranged in the second limiting long groove, and the axis of each spring is parallel to the length direction of the second limiting long groove.
Preferably, a first magnetic sheet is arranged on one surface of the inner wall of the fixed shell, which is close to the second fixed plate, and a second magnetic sheet matched with the first magnetic sheet is arranged on the second fixed plate.
Compared with the prior art, the application has the beneficial effects that:
according to the application, the forming platform, the belt and the reset component are matched to transmit the force in the vertical direction to the pressure sensor when foreign matters appear on the printed piece, and the belt can not shield the forming platform during printing operation through the winding device and the reset device, so that the function that the forming platform can stop working when foreign matters exist on a workpiece on the premise that the normal working of the forming platform and the pressure of the workpiece are not influenced is realized, and the situation that the forming platform and the printing body are extruded for a certain distance when the pressure sensor reaches a set value during the use process, and the printing body and the resin pool are damaged when the forming platform stops working is avoided.
Drawings
FIG. 1 is a perspective view of the entirety of the present application;
FIG. 2 is a front view of the entirety of the present application;
FIG. 3 is a schematic perspective view of a printhead of the present application;
FIG. 4 is a top view of a printhead of the present application;
FIG. 5 is a schematic cross-sectional view of FIG. 4 of the present application;
FIG. 6 is an exploded perspective view of a printhead of the present application;
FIG. 7 is a schematic perspective view of a stationary housing of the present application;
FIG. 8 is a second perspective view of the stationary housing of the present application;
FIG. 9 is an exploded perspective view of the stationary housing of the present application;
FIG. 10 is a schematic perspective view of a winding apparatus of the present application;
FIG. 11 is an exploded perspective view of the winding device of the present application;
fig. 12 is a perspective view of the reset device of the present application;
fig. 13 is an exploded perspective view of the reset device of the present application.
The reference numerals in the figures are:
1-a bottom plate;
2-a resin pool;
3-a printhead; 3 a-a connection end; 3 b-a stationary housing; 3b 1-elongated through holes; 3b 2-a first limiting long groove; 3b 3-a first magnetic sheet; 3 c-a linear motion device;
4-lifting device;
5-a forming platform;
6-a belt;
7-a winding device; 7 a-driving a motor; 7 b-a drive roller; 7 c-a driving belt; 7 d-driven roller;
8-resetting means; 8 a-a first fixing plate; 8a 1-a second limiting long groove; 8 b-a tension spring; 8 c-a limit bolt; 8 d-a second fixing plate; 8d 1-a second magnetic sheet; 8 e-limiting columns; 8 f-springs;
9-pressure sensor.
Detailed Description
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
Referring to fig. 1 to 13, a pressure intelligent control type photo-curing 3D printer comprises a base plate 1, a resin pool 2, a printing head 3 arranged right above the resin pool 2, a lifting device 4 for controlling the lifting of the printing head 3, a forming platform 5 arranged at the bottom of the printing head 3, a belt 6, a winding device 7, a reset device 8 and a pressure sensor 9, wherein a groove is arranged at one downward end of the printing head 3, the forming platform 5 is arranged in the groove of the printing head 3 in a sliding manner, the sliding direction of the forming platform 5 is parallel to the sliding direction of the printing head 3, the belt 6 is movably matched with the printing head 3, one end of the belt 6 is arranged outside the printing head 3, the other end of the belt 6 is arranged in the groove of the printing head 3, the belt 6 arranged in the groove of the printing head 3 is arranged below the forming platform 5, the belt 6 and the shaping platform 5 that set up in the recess of printing head 3 keep parallelism, the fixed outside that sets up at printing head 3 of coiling mechanism 7, coiling mechanism 7 and belt 6 are in the outside one end fixed fit of printing head 3, the forward rotation of coiling mechanism 7 is followed to belt 6 carries out the rolling motion, resetting means 8 sets up in the recess of printing head 3, resetting means 8 and printing head 3 sliding fit, resetting means 8 and belt 6 are in the one end fixed fit in the recess of printing head 3, resetting means 8 and coiling mechanism 7 set up respectively on the one end that keeps away from each other on printing head 3, resetting means 8 drives belt 6 and carries out the removal of horizontal direction when coiling mechanism 7 reverses, pressure sensor 9 is fixed to be set up in the inside of fixing base, pressure sensor 9 sets up the one end that the coiling mechanism 7 was kept away from to the fixing base, pressure sensor 9 sets up in resetting means 8 below.
The whole printing head 3 is controlled to move downwards along the vertical direction by the lifting device 4 so as to be close to the resin pool 2, at the moment, the belt 6 is in a stretching state so that the molding platform 5 is positioned above the belt 6 and is fully shielded, when the printing head 3 moves to the lowest position, the molding platform 5 moves downwards so as to be close to the belt 6 positioned in the groove of the printing head 3 and is then attached, at the moment, no printing part is arranged on the molding platform 5, so that no downward force is arranged on the belt 6, the reset device 8 fixedly matched with the belt 6 can not enable the pressure sensor 9 to send out a signal, then the winding device 7 works, the belt 6 fixedly matched with the winding device 7 rotates along with the belt to wind, the belt 6 positioned below the molding platform 5 moves so that the molding platform 5 is not shielded, the resin pool 2, the light source and the molding platform 5 are matched to enable a layer of photosensitive resin to be solidified and molded, then the lifting device 4 works to drive the whole printing head 3 to move upwards, the forming platform 5 moves upwards after the printing head 3 moves upwards to the maximum distance, the winding device 7 rotates reversely, the belt 6 moves horizontally under the operation of the resetting device 8 to be blocked by the forming platform 5, when the printing head 3 moves downwards to the lowest position again, the forming platform 5 moves downwards at this time to enable the printing piece to be attached to the belt 6, if no foreign matters exist on the printing piece at this time, the pressure sensor 9 does not work, the winding device 7 works to drive the belt 6 to move, if foreign matters exist on the printing piece at this time, the belt 6 bears downward force, then the resetting device 8 fixedly matched with the belt 6 is driven to squeeze the pressure sensor 9, the pressure sensor 9 transmits signals to the matched controller, and the controller controls the whole equipment to stop working, compared with the prior art, according to the application, the forming platform 5 and the belt 6 are matched to stop processing on the premise that the pressure of a workpiece is not given when foreign matters appear on the workpiece, and the normal operation of the forming platform 5 is not affected by the belt 6 through the matching of the winding device 7 and the reset device 8, so that the situation that the forming platform 5 and the printing body are extruded for a certain distance when the pressure sensor 9 reaches a set value in the use process, and the printing body and the resin pool 2 are damaged when the forming platform 5 stops working is avoided.
See fig. 6-9: the printing head 3 comprises a connecting end 3a, a fixed shell 3b and a linear moving device 3c, wherein the connecting end 3a is fixedly matched with the output end of the lifting device 4, the fixed shell 3b is integrally in a T-shaped sleeve shape, the fixed shell 3b is fixedly matched with the connecting end 3a, the fixed shell 3b is arranged between the connecting end 3a and the resin pool 2, the axis of the fixed shell 3b is parallel to the moving direction of the lifting device 4, the number of the linear moving devices 3c is two, the linear moving devices 3c are fixedly arranged on the inner wall of the fixed shell 3b, the two linear moving devices 3c are arranged in a mirror image mode inside the fixed shell 3b, the output end of the linear moving device 3c faces to the lower side, and the output end of the linear moving device 3c is fixedly matched with the forming platform 5.
Compared with the prior art, the linear moving device 3c controls the forming platform 5 to move vertically so that the vertical movement of the forming platform 5 can be stably performed, and the problem that the forming platform 5 collides with the belt 6 in the moving process of the printing head 3 to affect the integral printing work is avoided.
See fig. 7-9: the fixed shell 3b is close to the one end of coiling mechanism 7 and has offered rectangular through-hole 3b1, rectangular through-hole 3b1 and belt 6 cooperation work, and rectangular through-hole 3b 1's direction of penetration keeps perpendicularly with the main face of shaping platform 5.
Compared with the prior art, the strip through hole 3b1 of the application limits the moving direction of the belt 6 to ensure the belt 6 to have a better protection effect, thereby avoiding the situation that the belt 6 cannot fully coincide with the forming platform 5 to cover the forming platform 5.
See fig. 10 to 11: the winding device 7 comprises a driving motor 7a, a driving roller 7b and a driving belt 7c, wherein the driving motor 7a is fixedly arranged outside the fixed shell 3b, the driving roller 7b is rotatably arranged outside the fixed shell 3b, gears are arranged at two ends of the driving roller 7b, one end of the driving belt 7c is in transmission connection with the driving roller 7b, the other end of the driving belt 7c is in transmission connection with the driving motor 7a, and one end of the belt 6 arranged outside the fixed shell 3b is fixedly matched with the driving roller 7 b.
The driving motor 7a works to drive the whole driving roller 7b to rotate through the driving belt 7c, the belt 6 fixedly matched with the driving roller 7b is rolled and stored along with the rotation of the driving roller 7b, the belt 6 below the forming platform 5 moves along a horizontal state under the matching of the reset device 8, so that the whole forming platform 5 is not shielded and protected by the belt 6, and when the driving motor 7a is reversed, the belt 6 is released to move along with the reset device 8.
See fig. 10 to 11: the winding device 7 further comprises a driven roller 7d, the driven roller 7d is rotatably arranged in the fixed shell 3b and away from the position of the pressure sensor 9, the driven roller 7d is arranged below the forming platform 5, the axis of the driven roller 7d is parallel to the axis of the driving roller 7b, and the belt 6 and the driven roller 7d are matched to work.
Compared with the prior art, the driven roller 7d of the application avoids friction between the belt 6 and the hard surface on the fixed shell 3b and simultaneously ensures that the belt 6 can be kept parallel to the forming platform 5, thereby avoiding the situation that the belt 6 is broken due to friction between the belt 6 and the hard surface on the fixed shell 3b after long-term reciprocating movement of the belt 6 and the hard surface on the fixed shell 3 b.
See fig. 12 to 13: the resetting device 8 comprises two first fixing plates 8a and tension springs 8b, the number of the first fixing plates 8a is two, the first fixing plates 8a are in sliding fit with the fixing shell 3b, the sliding direction of the first fixing plates 8a is parallel to the main surface of the forming platform 5, the two first fixing plates 8a are arranged in a mirror image mode inside the fixing shell 3b, the first fixing plates 8a are arranged below the forming platform 5, the first fixing plates 8a are fixedly matched with the belt 6, the tension springs 8b are arranged at one ends, far away from the driving rollers 7b, of the first fixing plates 8a, the axis of the tension springs 8b is parallel to the sliding direction of the first fixing plates 8a, and the pressure sensor 9 is arranged below the first fixing plates 8 a.
By reversing the driving motor 7a, the driving roller 7b reverses the driving motor 7a, the tension spring 8b drives the first fixing plate 8a to return along the horizontal direction from the stretching state to the shrinking state, one end of the belt 6 fixedly matched with the first fixing plate 8a moves along the first fixing plate 8a, so that most of the area of the belt 6 returns to the horizontal state to cover the forming platform 5 again, and compared with the prior art, the belt 6 can stably cover the forming platform 5 by following the horizontal displacement of the reset device 8 when the winding device 7 reverses by the cooperation of the first fixing plate 8a and the tension spring 8b, so that the belt 6 in the printing head 3 does not move when the belt 6 is released after the winding device 7 reverses.
See fig. 7 and 12: the whole first fixed plate 8a is L-shaped, the reset device 8 further comprises a limit bolt 8c, the limit bolt 8c is arranged on the first fixed plate 8a, a first limit long groove 3b2 matched with the limit bolt 8c is formed in the fixed shell 3b, and the length direction of the first limit long groove 3b2 is parallel to the length direction of the fixed shell 3 b.
Compared with the prior art, the first fixing plate 8a is placed in the fixing shell 3b, the limit bolt 8c sequentially penetrates through the first fixing plate 8a and the first limit long groove 3b2 from the inside of the fixing shell 3b and then is fixed by using the nut, and compared with the prior art, the limit bolt 8c and the first limit long groove 3b2 are matched, so that a worker can finish the installation work of the first fixing plate 8a from the outside of the fixing shell 3b when placing the first fixing plate 8a in the fixing shell 3b, and therefore, the problem that the worker spends a great deal of time and effort in installation and disassembly is avoided.
See fig. 12 to 13: the resetting device 8 further comprises a second fixing plate 8d and a limiting column 8e, two ends of the second fixing plate 8d are respectively and fixedly matched with the two first fixing plates 8a, the second fixing plate 8d is integrally U-shaped, the opening end of the second fixing plate 8d faces the direction close to the belt 6, the second fixing plate 8d is in contact with the pressure sensor 9, the limiting column 8e is fixedly matched with one end, close to the belt 6, of the tension spring 8b, the axis of the limiting column 8e is parallel to the axis of the tension spring 8b, the limiting column 8e is matched with the second fixing plate 8d to work, and the tension spring 8b penetrates through the whole second fixing plate 8d.
Compared with the prior art, the limiting post 8e and the second fixing plate 8d are matched so that the tension spring 8b can pass through the second fixing plate 8d and can also be matched with the second fixing plate 8d to work, and therefore the problem that the belt 6 cannot completely shield imaging glass due to overlong length of the tension spring 8b is avoided.
See fig. 12 to 13: the first fixing plate 8a is provided with a second limiting long groove 8a1 matched with the limiting bolt 8c, the length direction of the second limiting long groove 8a1 is perpendicular to the main surface of the forming platform 5, the reset device 8 further comprises springs 8f, the number of the springs 8f is equal to that of the first fixing plate 8a, the springs 8f are arranged in the second limiting long groove 8a1, and the axis of each spring 8f is parallel to the length direction of the second limiting long groove 8a 1.
Compared with the prior art, the spring 8f and the second limiting long groove 8a1 of the application can enable the first fixing plate 8a to move vertically when the first fixing plate 8a receives the force in the vertical direction, so that the limiting bolt 8c can be prevented from decomposing and balancing the force in the vertical direction when the first fixing plate 8a receives the force in the vertical direction, and the pressure sensor 9 cannot receive accurate pressure.
See fig. 9 and 13: the first magnetic sheet 3b3 is arranged on one surface of the inner wall of the fixed shell 3b, which is close to the second fixed plate 8d, and the second magnetic sheet 8d1 matched with the first magnetic sheet 3b3 is arranged on the second fixed plate 8d.
Compared with the prior art, the magnetic force between the first magnetic sheet 3b3 and the second magnetic sheet 8d1 enables the second fixed plate 8d to move to the maximum moving distance when the second fixed plate 8d cannot move after moving a certain distance when the tension spring 8b returns to the compression state from the tension state, and the magnetic force between the first magnetic sheet 3b3 and the second magnetic sheet 8d1 enables the tension spring 8b to push the second fixed plate 8d to move when the tension spring 8b cannot work, so that the situation that the forming platform 5 cannot be completely blocked due to the fact that the second fixed plate 8d cannot move continuously after moving a certain distance is avoided.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (8)
1. The pressure intelligent control type photo-curing 3D printer comprises a bottom plate (1), a resin pool (2), a printing head (3) arranged right above the resin pool (2), a lifting device (4) for controlling the lifting of the printing head (3) and a forming platform (5) arranged at the bottom of the printing head (3), and is characterized by further comprising a belt (6), a winding device (7), a resetting device (8) and a pressure sensor (9);
one downward end of the printing head (3) is provided with a groove, the forming platform (5) is arranged in the groove of the printing head (3) in a sliding mode, and the sliding direction of the forming platform (5) is parallel to the sliding direction of the printing head (3);
the belt (6) is movably matched with the printing head (3), one end of the belt (6) is arranged outside the printing head (3), the other end of the belt (6) is arranged in a groove of the printing head (3), the belt (6) arranged in the groove of the printing head (3) is arranged below the forming platform (5), and the belt (6) arranged in the groove of the printing head (3) is parallel to the forming platform (5);
the winding device (7) is fixedly arranged outside the printing head (3), the winding device (7) is fixedly matched with one end of the belt (6) which is positioned outside the printing head (3), and the belt (6) rotates along with the forward direction of the winding device (7) to perform winding movement;
the reset device (8) is arranged in a groove of the printing head (3), the reset device (8) is in sliding fit with the printing head (3), the reset device (8) is fixedly matched with one end of the belt (6) which is positioned in the groove of the printing head (3), the reset device (8) and the winding device (7) are respectively arranged at one ends of the printing head (3) which are far away from each other, and the reset device (8) drives the belt (6) to move in the horizontal direction when the winding device (7) is reversed;
the pressure sensor (9) is fixedly arranged in the fixing seat, the pressure sensor (9) is arranged at one end of the fixing seat far away from the winding device (7), and the pressure sensor (9) is arranged below the resetting device (8);
the resetting device (8) comprises a first fixing plate (8 a) and a tension spring (8 b);
the number of the first fixing plates (8 a) is two, the first fixing plates (8 a) are in sliding fit with the fixing shell (3 b), the sliding direction of the first fixing plates (8 a) is parallel to the main surface of the forming platform (5), the two first fixing plates (8 a) are arranged in a mirror image mode in the fixing shell (3 b), the first fixing plates (8 a) are arranged below the forming platform (5), the first fixing plates (8 a) are fixedly matched with the belt (6), the tension springs (8 b) are arranged at one ends, far away from the driving roller (7 b), of the first fixing plates (8 a), the axes of the tension springs (8 b) are parallel to the sliding direction of the first fixing plates (8 a), and the pressure sensor (9) is arranged below the first fixing plates (8 a);
the resetting device (8) further comprises a second fixing plate (8 d) and a limiting column (8 e);
the both ends of second fixed plate (8 d) respectively with two first fixed plates (8 a) fixed cooperation, second fixed plate (8 d) wholly are "U" type, the open end orientation of second fixed plate (8 d) is close to the direction of belt (6), second fixed plate (8 d) and pressure sensor (9) contact, spacing post (8 e) and extension spring (8 b) are close to the fixed cooperation of one end of belt (6), the axis of spacing post (8 e) is parallel with the axis of extension spring (8 b), spacing post (8 e) and the cooperation work of second fixed plate (8 d), extension spring (8 b) run through whole second fixed plate (8 d).
2. A pressure-controlled photo-curing 3D printer according to claim 1, characterized in that the print head (3) comprises a connection end (3 a), a stationary housing (3 b) and a linear movement device (3 c);
the connecting end (3 a) is fixedly matched with the output end of the lifting device (4), the whole of the fixed casing (3 b) is in a T-shaped sleeve shape, the fixed casing (3 b) is fixedly matched with the connecting end (3 a), the fixed casing (3 b) is arranged between the connecting end (3 a) and the resin pool (2), the axis of the fixed casing (3 b) is parallel to the moving direction of the lifting device (4), the number of the linear moving devices (3 c) is two, the linear moving devices (3 c) are fixedly arranged on the inner wall of the fixed casing (3 b), the two linear moving devices (3 c) are arranged in a mirror image mode inside the fixed casing (3 b), the output end of the linear moving device (3 c) is arranged downwards, and the output end of the linear moving device (3 c) is fixedly matched with the forming platform (5).
3. The pressure intelligent control type photo-curing 3D printer according to claim 2, wherein a strip through hole (3 b 1) is formed at one end of the fixed shell (3 b) close to the winding device (7);
the long through holes (3 b 1) are matched with the belt (6), and the penetrating direction of the long through holes (3 b 1) is vertical to the main surface of the forming platform (5).
4. A pressure intelligent control type photo-curing 3D printer according to claim 3, characterized in that the winding device (7) comprises a driving motor (7 a), a driving roller (7 b) and a driving belt (7 c);
the driving motor (7 a) is fixedly arranged outside the fixed casing (3 b), the driving roller (7 b) is rotatably arranged outside the fixed casing (3 b), gears are arranged at two ends of the driving roller (7 b), one end of the driving belt (7 c) is in transmission connection with the driving roller (7 b), the other end of the driving belt (7 c) is in transmission connection with the driving motor (7 a), and the belt (6) is arranged at one end outside the fixed casing (3 b) and fixedly matched with the driving roller (7 b).
5. The pressure intelligent control type photo-curing 3D printer according to claim 4, wherein the rolling device (7) further comprises a driven roller (7D);
the rotatable position that sets up in fixed shell (3 b) inside keep away from pressure sensor (9) of driven voller (7 d), driven voller (7 d) set up in the below of shaping platform (5), and the axis of driven voller (7 d) is parallel with the axis of drive roller (7 b), and belt (6) and driven voller (7 d) cooperation work.
6. The pressure intelligent control type photo-curing 3D printer according to claim 1, wherein the first fixing plate (8 a) is L-shaped integrally, and the reset device (8) further comprises a limit bolt (8 c);
the limiting bolt (8 c) is arranged on the first fixing plate (8 a), a first limiting long groove (3 b 2) matched with the limiting bolt (8 c) is formed in the fixing shell (3 b), and the length direction of the first limiting long groove (3 b 2) is parallel to the length direction of the fixing shell (3 b).
7. The pressure intelligent control type photo-curing 3D printer according to claim 1 is characterized in that a second limiting long groove (8 a 1) matched with a limiting bolt (8 c) is formed in the first fixing plate (8 a);
the length direction of the second limiting long groove (8 a 1) is perpendicular to the main surface of the forming platform (5), the reset device (8) further comprises springs (8 f), the number of the springs (8 f) is equal to that of the first fixing plates (8 a), the springs (8 f) are arranged in the second limiting long groove (8 a 1), and the axis of the springs (8 f) is parallel to the length direction of the second limiting long groove (8 a 1).
8. The pressure intelligent control type photo-curing 3D printer according to claim 7, wherein a first magnetic sheet (3 b 3) is arranged on one surface of the inner wall of the fixed shell (3 b) close to the second fixed plate (8D);
the second fixing plate (8 d) is provided with a second magnetic sheet (8 d 1) which is matched with the first magnetic sheet (3 b 3).
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| CN202210861978.1A CN115157664B (en) | 2022-07-20 | 2022-07-20 | Pressure intelligent control type photo-curing 3D printer |
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