CN211518505U - High accuracy 3D printer - Google Patents

Abstract

The utility model relates to a high-precision 3D printer, which comprises a frame, an opto-mechanical, an opto-mechanical adjustment mechanism, a mounting plate, a material holding mechanism, an encoder, a Z-axis module, a printing platform and a scraper height adjustment mechanism; The optical machine is installed on the frame through the optical-mechanical adjustment mechanism, and the optical-mechanical adjustment mechanism can adjust the position of the optical-machine; the installation plate is fixed on the top of the frame; the material holding mechanism is installed on the installation plate; the coding The Z-axis module is connected to the frame, and the printing platform is installed on it, and can drive the printing platform to rise and fall; the scraper height adjustment mechanism is arranged on one side of the feeding mechanism, on which A scraper is installed, and can drive the scraper to rise and fall to adjust the scraper height. The high-precision 3D printer of the utility model has many advantages such as adjustable opto-mechanical precision, high degree of automation and stable performance.

Description

A high-precision 3D printer

【Technical field】

The utility model relates to a printer, in particular to a high-precision 3D printer, which belongs to the technical field of 3D printing.

【Background technique】

A 3D printer, also known as a three-dimensional printer, is a machine that uses cumulative manufacturing technology (ie, rapid prototyping technology). Its principle is to put data and raw materials into the 3D printer, and the machine builds the product layer by layer according to the program.

The prior art 3D printer is shown in the People's Republic of China Utility Model Patent Application No. 201610863393.8. However, the above printers often have the following defects in the actual use process:

1. The position of the optical machine of the printer is fixed after manual focusing, and the projection range of the optical machine cannot be adjusted as needed, so its accuracy cannot be adjusted, which greatly reduces the printing accuracy of the printer.

2. The resin box of this printer is driven by gears, but its rotation angle cannot be precisely measured and controlled, which has certain limitations.

3. The height of the scraper of this printer can only be adjusted manually, which is troublesome to adjust and has low adjustment accuracy.

Therefore, in order to solve the above technical problems, it is indeed necessary to provide an innovative high-precision 3D printer to overcome the defects in the prior art.

【Content of utility model】

In order to solve the above-mentioned technical problems, the purpose of this utility model is a high-precision 3D printer with adjustable optomechanical precision, high degree of automation and stable performance,

In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: a high-precision 3D printer, which includes a frame, an opto-mechanical, an opto-mechanical adjustment mechanism, a mounting plate, a material holding mechanism, an encoder, a Z-axis module, a printing Platform and scraper height adjustment mechanism; wherein, the optical machine is installed on the frame through the optical machine adjustment mechanism, and the optical machine adjustment mechanism can adjust the position of the optical machine; the mounting plate is fixed on the top of the frame; The mechanism is installed on the mounting plate; the encoder cooperates with the material holding mechanism; the Z-axis module is connected to the frame, and the printing platform is installed on it, and can drive the printing platform to rise and fall; the scraper height adjustment mechanism is set A scraper is installed on one side of the material holding mechanism, and the scraper can be driven to rise and fall to adjust the height of the scraper.

The high-precision 3D printer of the present invention is further configured as follows: the optical-mechanical adjustment mechanism comprises a base plate, an optical-mechanical coarse adjustment seat, a lower adjustment plate, an optical-mechanical leveling differential nut and an upper adjustment plate; wherein, the base plate is horizontally fixed on the on the frame; the optical-mechanical coarse adjustment seat is installed on the bottom plate, the top of which is connected to the bottom of the lower adjustment plate, and can be lifted up and down against the lower adjustment plate; the optical-mechanical leveling differential nut is installed on the lower adjustment plate, Its top abuts the upper adjustment plate and can fine-tune the position of the upper adjustment plate; the optical machine is fixed on the top of the upper adjustment plate.

The high-precision 3D printer of the present invention is further configured as follows: the optical-mechanical coarse adjustment seat is specifically a liftable optical-mechanical coarse adjustment seat, which is connected to the bottom center of the lower adjustment plate.

The high-precision 3D printer of the present utility model is further configured as follows: the opto-mechanical leveling differential nuts are specifically provided with four, and are provided at the four corners of the lower adjusting plate.

The high-precision 3D printer of the present invention is further configured as follows: the lower adjusting plate is provided with locking bolts; the locking bolts pass through the upper adjusting plate; and the upper adjusting plate can be lifted and lowered along the locking bolts.

The high-precision 3D printer of the present utility model is further configured as follows: the material holding mechanism includes a turntable bearing, a mounting seat, a resin box, a driving motor and a driving gear; wherein, the turntable bearing is pivotally connected to the mounting plate, and an outer side thereof is provided with a turntable bearing. the outer ring gear; the mounting seat is mounted on the outer ring gear; the resin box and the mounting seat are fixedly connected; the driving motor is mounted on the bottom of the mounting plate, which is connected and drives the driving gear to rotate; the driving gear and The outer ring gear is meshed to make the drive motor drive the turntable bearing and the resin box to rotate.

The high-precision 3D printer of the present invention is further configured as follows: the encoder is connected with a driven gear, the driven gear and the outer gear are engaged, and the encoder obtains the rotation of the resin box by measuring the rotation angle of the driven gear Angle.

The high-precision 3D printer of the present invention is further configured as follows: a transparent glass is fixed at the bottom of the resin box, and the resin box and the transparent glass are rotated by an integer multiple of 360° under the control of an encoder.

The high-precision 3D printer of the present invention is further configured as follows: the Z-axis module includes a motor seat, a screw seat I, a Z-axis motor, a screw I, a lifting slider and a printing platform mounting seat; wherein, the said The top of the frame is fixed with a top plate; the motor base is fixed on the top plate; the screw base I is fixed on the upper part of the motor base; the Z-axis motor is installed on the motor base; the screw rod I is vertically arranged and It is pivotally connected to the screw seat; the Z-axis motor is connected and drives the screw rod I to rotate; the lifting slider is matched with the screw rod I, and the lifting slider is driven to rise and fall by the rotation of the screw rod I; the printing platform is installed The seat is fixed on the lifting slider, on which the printing platform is installed.

The high-precision 3D printer of the present invention is further configured as follows: the scraper height adjustment mechanism includes a drive module, a wedge block, a guide rail, a drive slider, a scraper guide bearing, a scraper height adjustment column and a scraper bracket; wherein, the drive module is installed on the top plate; the wedge block is connected to the drive module and is driven by the drive module to move; the guide rail and the wedge block are fixedly connected, and the two are linked together; the drive slider is matched with the guide rail and can move along the guide rail, and the wedge shaped The block can lift the drive slider; the scraper guide bearing is fixed on the mounting plate; the bottom end of the scraper height adjustment column is connected to the drive slider, which passes through the scraper guide bearing, and the top end is connected to the scraper bracket.

The high-precision 3D printer of the present invention is further configured as follows: the drive module specifically includes a scraper lift motor, a screw base II, a screw II and a moving slider; wherein, the screw base II is fixed on the top plate; the The scraper lift motor is installed on one side of the screw base II; the screw rod II is arranged horizontally and is pivotally connected to the screw base II, which is connected and driven by the scraper lift motor to rotate; the moving slider and the screw The rod II is matched and can be driven by the screw II to move along the screw II; the wedge block is connected to the moving slider.

The high-precision 3D printer of the present invention can also be configured as follows: the screw seat II is provided with a pair of inverted V-shaped guide bars; the moving slider is provided with inverted V-shaped guide grooves matched with the guide bars ; The inverted V-shaped guide bars are symmetrically distributed on both sides of the screw II.

Compared with the prior art, the utility model has the following beneficial effects:

1. The high-precision 3D printer of the present utility model roughly adjusts and finely adjusts the position of the optomechanical machine through the optomechanical coarse adjustment seat and the optomechanical leveling differential nut, so that the optomechanical focus can be adjusted, and then the projection range of the optomechanical machine can be adjusted, which greatly improves the performance of the optical machine. the printing accuracy of the printer.

2. By setting the encoder, the high-precision 3D printer of the present utility model stops the drive motor immediately when the turntable bearing is stuck due to a foreign object and causes the rotor to lose steps to prevent damage to the resin box; at the same time, it can also detect the turntable bearing. When the number of steps has a small amount of lost steps or multiple steps, the corresponding feedback is performed, so that the drive motor can compensate for the corresponding number of steps.

3. The high-precision 3D printer of the present utility model adopts a motor-driven scraper height adjustment mechanism to control the height of the scraper, so that the scraper height can be easily adjusted and the degree of automation is high; The thickness of the printed layer is uniform and precise.

【Description of drawings】

FIG. 1 is a perspective view of the high-precision 3D printer of the present invention.

2 is a perspective view of the high-precision 3D printer of the present invention from another perspective.

FIG. 3 is a partial enlarged view of A in FIG. 1 .

FIG. 4 is a partial enlarged view of B in FIG. 1 .

5 is a schematic structural diagram of a Z-axis module of the high-precision 3D printer of the present invention.

FIG. 6 is a partial enlarged view of C in FIG. 1 .

7 is a cross-sectional view of the material holding mechanism of the present invention.

【Detailed ways】

Please refer to the accompanying drawings 1 to 7 of the description, the present utility model is a high-precision 3D printer, which consists of a frame 1, an optical machine 2, an optical machine adjustment mechanism 3, a mounting plate 4, a material holding mechanism 5, a code It is composed of several parts, such as a device 6, a Z-axis module 7, a printing platform 8 and a scraper height adjustment mechanism 9.

The optomechanical 2 is mounted on the frame 1 through an optomechanical adjustment mechanism 3 , and the optomechanical adjustment mechanism 3 can adjust the position of the optomechanical 2 . The optical machine 2 is a commercially available high-precision optical machine, so it will not be repeated here.

Specifically, the optomechanical adjustment mechanism 3 is composed of a base plate 31 , an optomechanical coarse adjustment seat 32 , a lower adjustment plate 33 , an optomechanical leveling differential nut 34 and an upper adjustment plate 35 . The bottom plate 31 is horizontally fixed on the rack 1 .

The optical-mechanical coarse adjustment base 32 is mounted on the bottom plate 31 , and the top of the base 32 is connected to the bottom of the lower adjustment plate 33 , and can lift against the lower adjustment plate 33 . In this embodiment, the optical-mechanical coarse adjustment seat 32 is a liftable optical-mechanical coarse adjustment seat, which is connected to the bottom center of the lower adjusting plate 33 .

The optical-mechanical leveling differential nut 34 is mounted on the lower adjusting plate 33 , and its top abuts the upper adjusting plate 35 and can fine-tune the position of the upper adjusting plate 35 . There are specifically four optical-mechanical leveling differential nuts 34 , which are arranged at the four corners of the lower adjusting plate 4 , and can stably support the upper adjusting plate 35 .

The optical machine 2 is fixed on the top of the upper adjusting plate 35 , which is adjusted correspondingly with the position adjustment of the upper adjusting plate 35 .

Further, locking bolts 36 are provided on the lower adjusting plate 33 ; the locking bolts 36 pass through the upper adjusting plate 35 ;

The design principle of the optical-mechanical adjustment mechanism 3 is as follows: when the position of the optical-mechanical 2 needs to be adjusted, the optical-mechanical coarse adjustment seat 32 is adjusted first, so that the optical-mechanical coarse adjustment seat 32 drives the lower adjustment plate 33 and the optical-mechanical leveling differential in turn. The nut 34 and the upper adjustment plate 35 are linked to the optical engine 2 through the upper adjustment plate 35, and then the position of the optical engine 2 is preliminarily adjusted; then the optical engine leveling differential nut 34 is adjusted so that the optical engine leveling differential nut 34 drives the upper adjustment plate 35 , the upper adjustment plate 35 is fine-tuned, the upper adjustment plate 35 is linked with the optical engine 2, and the position of the optical engine 2 is adjusted precisely, and finally the upper adjustment plate 35 is fixed and locked by the locking bolt 36.

The optomechanical adjustment mechanism 3 roughly adjusts and finely adjusts the position of the optomechanical 2 through the optomechanical coarse adjustment seat 32 and the optomechanical leveling differential nut 34, so that the focal length of the optomechanical 2 can be adjusted to obtain a clear projected image, which greatly improves the performance of the optomechanical 2. the printing accuracy of the printer.

Further, the mounting plate 4 is horizontally fixed above the rack 1 . The material holding mechanism 5 is mounted on the mounting plate 4 .

Specifically, the material holding mechanism 5 is composed of a turntable bearing 51 , a mounting seat 52 , a resin box 53 , a driving motor 54 , and a driving gear 55 . The turntable bearing 51 is pivotally connected to the mounting plate 4 , and an outer gear ring 56 is arranged on the outer side thereof, and the outer gear ring 56 can rotate; the inner side of the turntable bearing 51 is fixed.

The mounting seat 52 is mounted on the outer ring gear 56 and rotates with the rotation of the outer ring gear 56 . The resin box 53 and the mounting seat 52 are fixedly connected, and the two are linked together. A transparent glass 58 is fixed to the bottom of the resin box 53 .

The drive motor 54 is mounted on the bottom of the mounting plate 4 and is connected to and drives the drive gear 55 to rotate. The drive gear 55 meshes with the outer ring gear 56 , so that the drive motor 54 drives the turntable bearing 51 and the resin box 53 to rotate.

The encoder 6 cooperates with the above-mentioned material holding mechanism 5 . Specifically, a driven gear 61 is connected to the encoder 6 , and the driven gear 61 meshes with the outer ring gear 56 of the material-receiving mechanism 5 . When the turntable bearing 51 is blocked due to foreign matter, resulting in lost steps, the encoder 6 can immediately stop the drive motor 54 to prevent damage to the resin box 53; at the same time, it can also detect a small amount of lost steps in the turntable bearing 51. Corresponding feedback is performed when one or more steps are taken, so that the drive motor 54 can perform corresponding step number compensation.

When the drive motor 54 drives the outer ring gear 56 of the turntable bearing 51 to rotate, the outer ring gear 56 also links the driven gear 61, and the encoder 6 calculates the rotation angle of the driven gear 61 to obtain the rotation of the resin box 53 of the feeding mechanism 5. angle, so that the thickness of the printed layer can be precisely controlled.

At the same time, the rotation angle of the resin box 53 is controlled by the encoder 6, so that the rotation of the resin box 53 is an integral multiple of 360°, so that the position of the transparent glass 58 at the bottom of the resin box 53 is constant during each printing, so that the Reduce the printing error caused by the flatness error of the transparent glass 58.

The Z-axis module 7 is connected to the frame 1 on which the printing platform 8 is installed, and can drive the printing platform 8 to rise and fall. Specifically, the Z-axis module 7 is composed of a motor base 71 , a screw base I72 , a Z-axis motor 73 , a screw I74 , a lifting slider 75 , and a printing platform mounting base 76 .

Wherein, a top plate 11 is fixed on the top of the frame 1 ; the motor base 71 is fixed on the top plate 11 . The screw base I72 is fixed on the upper part of the motor base 71 . The Z-axis motor 73 is mounted on the motor base 71 .

The screw rod I74 is vertically arranged and pivoted on the screw rod seat 72; the Z-axis motor 73 is connected and drives the screw rod I74 to rotate.

The lifting slider 75 cooperates with the screw rod I74, and the lifting slider 75 is driven to rise and fall by the rotation of the screw rod I74. The printing platform mounting seat 76 is fixed on the lifting slider 75 on which the printing platform 8 is mounted.

When the Z-axis module 7 works, the Z-axis motor 73 drives the screw rod I74, the screw rod I74 rotates to drive the lifting slider 75 to rise and fall, the lifting slider 75 is linked to the printing platform mounting seat 76, and the printing platform mounting seat 76 drives it. The printing platform 8 is raised and lowered.

Still further, the scraper height adjustment mechanism 9 is arranged on one side of the material holding mechanism 5, on which the scraper 10 is installed, and can drive the scraper 10 to rise and fall to adjust the scraper height. In this embodiment, the scraper is in the prior art, so it is not repeated here.

The scraper height adjustment mechanism 9 is composed of a drive module 91 , a wedge block 92 , a guide rail 93 , a drive slider 94 , a scraper guide bearing 95 , a scraper height adjustment column 96 and a scraper bracket 97 .

Wherein, the driving module 91 is installed on the top plate 11 . In this embodiment, the drive module 91 adopts a screw drive module, which is specifically composed of a scraper lift motor 911 , a screw seat II 912 , a screw II 913 , and a moving slider 914 . The screw seat II912 is fixed on the top plate 11 . The scraper lift motor 911 is installed on one side of the screw seat II912. The screw rod II913 is arranged horizontally, and is pivotally connected to the screw rod seat II912, which is connected and is driven by the scraper lift motor 911 to rotate. The moving slider 914 cooperates with the lead screw II913, and can be driven by the lead screw II913 to move along the lead screw II913.

The screw seat II912 is provided with a pair of inverted V-shaped guide bars 98; the inverted V-shaped guide bars 98 are symmetrically distributed on both sides of the screw rod II913. The moving slider 914 is provided with an inverted V-shaped guide groove 99 matched with the guide bar 98 . Through the cooperation of the guide bars 98 and the inverted V-shaped guide grooves 99 , the moving slider 914 can be guided to prevent the moving slider 914 from being deflected.

The wedge block 92 is connected to the driving module 91 and is driven to move by the driving module 91 . Specifically, the wedge block 92 is connected to the moving slider 914 of the driving module 91 .

The guide rail 93 and the wedge block 92 are fixedly connected, and the two are linked together. The driving slider 94 is matched with the guide rail 93 and can move along the guide rail 93 , and the wedge block 92 can lift the driving slider 94 .

The scraper guide bearing 95 is fixed on the mounting plate 4 . The bottom end of the scraper height adjusting column 96 is connected to the driving slider 94 , which passes through the scraper guide bearing 95 , and the top end is connected to the scraper bracket 97 .

The working principle of the scraper height adjustment mechanism 9 is as follows: the scraper lifting motor 911 drives the screw II913 to rotate, and the screw II913 drives the moving slider 914 to move; move. Since the wedge-shaped blocks 92 are arranged obliquely, the guide rails 93 are also arranged obliquely. When the guide rail 93 moves incline, the driving slider 94 can move along the guide rail 93, and at the same time, the driving slider 94 can lift or pull down the scraper height adjustment column 96, the scraper height adjustment column 96 is linked with the scraper bracket 97, and the scraper bracket 97 drives the scraper. 10 lifts.

The scraper height adjustment mechanism 9 is driven by the scraper lift motor 911 to control the height of the scraper, so that the scraper height can be easily adjusted and the degree of automation is high; Uniform and precise thickness.

The above specific embodiments are only preferred embodiments of this creation, and are not intended to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation shall be included in this creation. within the scope of protection.

Claims (12)

1. a high-precision 3D printer, characterized in that: comprising a frame, an opto-mechanical, an opto-mechanical adjustment mechanism, a mounting plate, a material holding mechanism, an encoder, a Z-axis module, a printing platform and a scraper height adjustment mechanism; wherein, The optical machine is installed on the rack through an optical-mechanical adjustment mechanism, and the optical-mechanical adjustment mechanism can adjust the position of the optical-machine; the mounting plate is fixed on the top of the rack; the material holding mechanism is mounted on the mounting plate; the The encoder cooperates with the material holding mechanism; the Z-axis module is connected to the frame, a printing platform is installed on it, and can drive the printing platform to rise and fall; the scraper height adjustment mechanism is arranged on one side of the material holding mechanism, and its A scraper is installed on it, and can drive the scraper to lift and adjust the scraper height. 2. The high-precision 3D printer according to claim 1, wherein the optomechanical adjustment mechanism comprises a base plate, an optomechanical coarse adjustment seat, a lower adjustment plate, an optomechanical leveling differential nut and an upper adjustment plate; The bottom plate is horizontally fixed on the frame; the optical-mechanical coarse adjustment seat is installed on the bottom plate, the top of which is connected to the bottom of the lower adjustment plate, and can be lifted up and down against the top of the lower adjustment plate; the optical-mechanical leveling differential nut is installed on the bottom plate. The top of the lower adjusting plate abuts the upper adjusting plate and can fine-tune the position of the upper adjusting plate; the optical machine is fixed on the top of the upper adjusting plate. 3 . The high-precision 3D printer according to claim 2 , wherein the optical-mechanical coarse adjustment seat is a liftable optical-mechanical coarse adjustment seat, which is connected to the bottom center of the lower adjustment plate. 4 . 4 . The high-precision 3D printer according to claim 2 , wherein there are four specific optomechanical leveling differential nuts, which are arranged at the four corners of the lower adjusting plate. 5 . 5 . The high-precision 3D printer according to claim 2 , wherein: the lower adjustment plate is provided with locking bolts; the locking bolts pass through the upper adjustment plate; the upper adjustment plate can be locked along the Bolt lift. 6. The high-precision 3D printer according to claim 1, wherein the material holding mechanism comprises a turntable bearing, a mounting seat, a resin box, a driving motor and a driving gear; wherein, the turntable bearing is pivotally connected to the mounting plate The mounting seat is mounted on the outer ring gear; the resin box and the mounting seat are fixedly connected; the drive motor is mounted on the bottom of the mounting plate, which connects and drives the drive gear to rotate ; The drive gear meshes with the outer ring gear, so that the drive motor drives the turntable bearing and the resin box to rotate. 7. The high-precision 3D printer according to claim 6, characterized in that: a driven gear is connected to the encoder, the driven gear is meshed with the outer ring gear, and the encoder calculates the rotational speed of the driven gear by measuring the rotational speed of the driven gear. Angle to get the angle of resin box rotation. 8 . The high-precision 3D printer according to claim 6 , wherein a transparent glass is fixed at the bottom of the resin box, and the resin box and its transparent glass are rotated by an integral multiple of 360° under the control of an encoder. 9 . 9. high-precision 3D printer as claimed in claim 1, is characterized in that: described Z-axis module comprises motor seat, screw seat I, Z-axis motor, screw I, lifting slider and printing platform mounting seat; Wherein, the top of the frame is fixed with a top plate; the motor base is fixed on the top plate; the screw base I is fixed on the upper part of the motor base; the Z-axis motor is installed on the motor base; the screw rod I Vertically arranged and pivoted on the screw seat; the Z-axis motor is connected and drives the screw I to rotate; the lifting slider is matched with the screw I, and the lifting slider is driven to rise and fall by the rotation of the screw I; The printing platform mounting seat is fixed on the lifting slider, on which the printing platform is mounted. 10. The high-precision 3D printer according to claim 1, wherein the scraper height adjustment mechanism comprises a drive module, a wedge block, a guide rail, a drive slider, a scraper guide bearing, a scraper height adjustment column and a scraper bracket; wherein , the drive module is installed on the top plate; the wedge block is connected to the drive module and is driven to move by the drive module; the guide rail and the wedge block are fixedly connected, and the two are linked; It moves along the guide rail, and the wedge-shaped block can lift the drive slider; the scraper guide bearing is fixed on the mounting plate; the bottom end of the scraper height adjustment column is connected to the drive slider, which passes through the scraper guide bearing, and the top is connected to the the scraper holder. 11. The high-precision 3D printer according to claim 10, wherein the drive module specifically comprises a scraper lift motor, a screw base II, a screw II and a moving slider; wherein, the screw base II holds the on the top plate; the scraper lift motor is installed on one side of the screw base II; the screw rod II is arranged horizontally and is pivotally connected to the screw base II, which is connected and rotated by the scraper lift motor; The moving slider is matched with the screw II, which can be driven by the screw II to move along the screw II; the wedge block is connected to the moving slider. 12. The high-precision 3D printer according to claim 11, characterized in that: a pair of inverted V-shaped guide bars are arranged on the screw base II; Inverted V-shaped guide groove; the inverted V-shaped guide strips are symmetrically distributed on both sides of the screw II.

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