CN216782663U

CN216782663U - Three-dimensional printer

Info

Publication number: CN216782663U
Application number: CN202122269045.7U
Authority: CN
Inventors: 刘付杰; 胡雅
Original assignee: Shenzhen Anycubic Technology Co Ltd
Current assignee: Shenzhen Anycubic Technology Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-06-21
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a three-dimensional printer which comprises a top plate, a light source assembly and a position adjusting assembly, wherein the top plate is provided with a light-transmitting plate; the light source assembly is positioned below the top plate and can move in the vertical direction; the position adjusting assembly is connected with the light source assembly; the position adjusting assembly is used for adjusting the distance between the light source assembly and the light transmitting plate so as to adjust the projection area of the light beam emitted by the light source assembly on the light transmitting plate. According to the three-dimensional printer provided by the utility model, the position of the light source assembly is continuously adjusted through the position adjusting assembly, so that the error between the actual printing area and the preset printing area is reduced, the smaller and clearer the printing forming characteristics of the three-dimensional printer can be, the printing precision of the three-dimensional printer can be improved, and the printing effect is improved.

Description

Three-dimensional printer

Technical Field

The utility model relates to the technical field of additive manufacturing, in particular to a three-dimensional printer.

Background

The light-cured three-dimensional printer utilizes a light source within a specific wavelength range to irradiate liquid light-cured resin and initiate photochemical reaction, so that the light-cured resin in an irradiation area of the light source is cured and formed by the liquid state, and an object to be formed can be obtained, wherein light beams emitted by a light source assembly of the three-dimensional printer are emitted in an umbrella shape and projected onto a light-transmitting plate, and the projection area is a printing area.

At present, a common photocuring three-dimensional printer is affected by machining errors or assembly errors, so that the actual printing area of the three-dimensional printer deviates from the preset printing area, the size of a printed model is different from the preset theoretical value, and the printing precision is affected.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a three-dimensional printer, which reduces an error between an actual printing area and a preset printing area by adjusting a distance between a light source assembly and a light-transmitting plate through a position adjusting assembly, so as to improve printing accuracy of the printer.

The utility model provides a three-dimensional printer, which is characterized by comprising:

a top plate provided with a light-transmitting plate;

a light source assembly located below the top plate and movable in a vertical direction;

the position adjusting assembly is connected with the light source assembly; the position adjusting assembly is used for adjusting the distance between the light source assembly and the light transmitting plate so as to adjust the projection area of the light beam emitted by the light source assembly on the light transmitting plate.

Further, the position adjusting assembly comprises a first connecting plate, a first guide rail, a first sliding block and an adjusting part, wherein the first connecting plate is connected with the bottom of the top plate; the first guide rail is vertically arranged on the first connecting plate; the first sliding block is connected with the light source assembly and can move along the length direction of the first guide rail; the adjusting part is used for controlling the position of the first sliding block on the first guide rail so as to adjust the distance between the light source assembly and the light transmission plate.

Furthermore, regulation portion is including adjusting pole, regulating block and regulation seat, adjust the seat with first guide rail is connected, be equipped with the connecting hole on the regulation seat, the regulating block is established on the first slider, it can follow to adjust the pole the length direction of connecting hole removes, just the one end of adjusting the pole is passed behind the connecting hole can with the regulating block butt, and first slider is followed it drives to adjust the pole after the regulating block adjusts to preset position, it fixes to adjust the pole on the regulation seat.

Furthermore, the position adjusting assembly further comprises a second connecting plate and a sliding part, the second connecting plate is connected with the bottom of the top plate, the sliding part is connected with the light source assembly and the second connecting plate respectively, and the sliding part enables the light source assembly to slide on the second connecting plate along the vertical direction.

Further, the first connecting plate and the second connecting plate are oppositely arranged at two sides of the light source assembly.

Further, the sliding part comprises a second guide rail and a second sliding block, and the second guide rail is vertically arranged on the second connecting plate; the second sliding block is connected with one side, close to the second connecting plate, of the light source assembly, and the second sliding block is connected with the second guide rail in a sliding mode.

Further, the light source subassembly still includes ray apparatus, speculum and ray apparatus seat, the ray apparatus seat with the position control subassembly is connected, the ray apparatus is established on the ray apparatus seat, the light-emitting window of ray apparatus with the speculum sets up relatively, the speculum is used for right the light beam that the ray apparatus sent reflects, so that the light beam upwards and after reflecting and projection on the light-passing board.

Further, the light source subassembly still include with the fixed plate that the ray apparatus seat is connected, the speculum is placed on the fixed plate, the edge of the relative both sides of fixed plate corresponds respectively and is provided with first boss and second boss, first boss to the distance between the roof with the second boss reaches the distance between the roof equals.

Furthermore, the included angle between the reflecting mirror and the horizontal plane where the light-transmitting plate is located is 30-60 degrees.

Further, be equipped with the rack on the fixed plate, the rack is located under the light-passing board, the rack is including placing the board and establishing spread groove on placing the board, the edge of the relative both sides of speculum with the spread groove cooperation is connected, just the speculum passes through the spread groove is fixed back on the rack, the speculum with place between the board parallel to each other and have the clearance.

The three-dimensional printer comprises a top plate, a light source assembly and a position adjusting assembly, wherein the position adjusting assembly is connected with the light source assembly and controls the light source assembly to move, so that the distance between the light source assembly and a light-transmitting plate positioned on the top plate is adjusted, the projection area of a light beam emitted by the light source assembly on the light-transmitting plate is changed, the position of the light source assembly can be continuously adjusted through the position adjusting assembly, the error between the actual printing area and the preset printing area is reduced, the smaller and clearer the characteristic of the three-dimensional printer capable of printing and forming can be, the printing precision of the three-dimensional printer can be improved, and the printing effect is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is an overall structural view of a three-dimensional printer;

FIG. 2 is a front view of a partial structure of the three-dimensional printer;

FIG. 3 is an exploded view of the three-dimensional printer;

fig. 4 is a schematic diagram of the operation of the three-dimensional printer.

In the figure:

1-top plate, 101-light-transmitting plate;

2-light source assembly, 201-light machine, 202-reflector, 203-light machine base, 204-fixing plate, 205-placing frame, 2041-first fixing area, 2042-second fixing area, 2051-placing plate and 2052-connecting groove;

3-position adjustment assembly, 301-first connecting plate, 302-first guide rail, 303-first slide block, 304-adjusting rod, 305-adjusting block, 306-adjusting seat, 307-second connecting plate, 308-second guide rail, 309-second slide block;

the alpha-emitting angle, the L1-horizontal distance between the light machine and the reflector, the L2-vertical distance between the reflector and the transparent plate, and the L3-imaging size of the light beam on the transparent plate.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

The utility model provides a three-dimensional printer, which comprises a top plate 1, a light source assembly 2 and a position adjusting assembly 3, wherein the top plate 1 is provided with a light-transmitting plate 101; the light source component 2 is positioned below the top plate 1 and can move in the vertical direction; position adjustment subassembly 3 is connected with light source subassembly 2, and position adjustment subassembly 3 is used for adjusting the distance between light source subassembly 2 and the light-passing board 101 to the projection area of the light beam on the light-passing board 101 that the adjustment light source subassembly 2 sent.

The three-dimensional printer provided by the utility model comprises a top plate 1, a light source assembly 2 and a position adjusting assembly 3, wherein the position adjusting assembly 3 is connected with the light source assembly 2, the light source assembly 2 is controlled to move by the position adjusting assembly 3, so that the distance between the light source assembly 2 and a light-transmitting plate 101 positioned on the top plate 1 is adjusted, the projection area of a light beam emitted by the light source assembly 2 on the light-transmitting plate 101 is changed, the position of the light source assembly 2 can be continuously adjusted by the position adjusting assembly 3, the error between the actual printing area and the preset printing area is reduced, the smaller and clearer the characteristic of the three-dimensional printer capable of printing and forming can be, the printing precision of the three-dimensional printer can be improved, and the printing effect is improved.

In some embodiments, referring to fig. 1 to 3, the position adjustment assembly 3 includes a first connection plate 301, a first rail 302, a first slider 303, and an adjustment portion, the first connection plate 301 being connected to the bottom of the top plate 1; the first guide rail 302 is vertically arranged on the first connecting plate 301; the first slider 303 is connected with the light source assembly 2 and can move along the length direction of the first guide rail 302; the adjusting part is used for controlling the position of the first slider 303 on the first guide rail 302 to adjust the distance between the light source assembly 2 and the light-transmitting panel 101.

It can be understood that, the first connecting plate 301 is connected with the bottom of the top plate 1, the first guide rail 302 on the first connecting plate 301 is in sliding connection with the first slider 303 in a matching manner, and the first slider 303 is connected with the light source assembly 2, the position of the first slider 303 on the first guide rail 302 is controlled by the adjusting part, so that the first slider 303 drives the light source assembly 2 to move on the first connecting plate 301 along the length direction of the first guide rail 302, and further the distance between the light source assembly 2 and the top plate 1 is adjusted, so as to adjust the distance between the light source assembly 2 and the light-transmitting plate 101 on the top plate 1.

Specifically, the adjusting portion includes an adjusting rod 304, an adjusting block 305 and an adjusting seat 306, the adjusting seat 306 is connected to the first guide rail 302, the adjusting seat 306 is provided with a connecting hole, the adjusting block 305 is disposed on the first slider 303, the adjusting rod 304 can move along the length direction of the connecting hole, one end of the adjusting rod 304 can abut against the adjusting block 305 after passing through the connecting hole, and the adjusting rod 304 is fixed on the adjusting seat 306 after the first slider 303 drives the adjusting block 304 to adjust to a preset position along with the adjusting rod 304.

For example, the adjusting rod 304 includes a micrometer knob screw, a screw thread is disposed in the connecting hole and is in fit connection with the micrometer knob screw, the micrometer knob screw is screwed, that is, the length of the micrometer knob screw passing through one end of the connecting hole on the adjusting base 306 is changed, because the adjusting base 306 is fixedly connected with the first guide rail 302, when the length of the micrometer knob screw passing through one end of the connecting hole is changed, the micrometer knob screw abuts against the adjusting block 305 and is in fit connection with the adjusting block 305, the micrometer knob screw can drive the adjusting block 305 to move along the length direction of the connecting hole in a screwing manner, so that the first slider 303 moves along with the movement of the adjusting block 305 to adjust the position of the first slider 303 on the first guide rail 302, and when the first slider 303 reaches a preset position, the micrometer knob screw is in fit connection with the connecting hole through the screw thread, the micrometer knob screw is fixed on the adjusting base 306, further completing the locking of the adjusting part to the position of the light source component 2; specifically, the micrometer knob screw in the embodiment utilizes the principle of spiral amplification, when the micrometer knob screw rotates a circle in the thread of the connecting hole, the screw advances or retreats along the direction of the rotation axis by a pitch, so that the light source assembly 2 moves along the axis direction, for example, the pitch of the precise thread of the micrometer knob screw is 0.5mm, the movable scale has 50 equal scales, the movable scale rotates a circle, and the micrometer knob screw can advance or retreat by 0.5mm, so that each small scale is rotated, which is equivalent to 0.01mm advancing or retreating of the micrometer knob screw, so that the movement of the light source assembly 2 can be accurately controlled to 0.01mm, so as to accurately control the imaging size, when the imaging size is larger than the required size, the micrometer knob screw is unscrewed clockwise, the light source assembly 2 vertically moves upward, conversely, when the imaging size is smaller than the required size, the micrometer knob screw rod is screwed up to counter-clockwise, and light source subassembly 2 is vertical to be removed downwards, only can order about light source subassembly 2 to remove through twisting micrometer knob screw rod, and simple structure easily operates, and because the micrometer has accurate pitch, consequently can make the less distance of accurate removal of light source subassembly 2 to accurate adjustment light beam is at the formation of image size on light-passing board 101.

Further, the position adjustment assembly 3 further includes a second connection plate 307 and a sliding portion, the second connection plate 307 is connected to the bottom of the top plate 1, the sliding portion is respectively connected to the light source assembly 2 and the second connection plate 307, and the sliding portion enables the light source assembly 2 to slide on the second connection plate 307 in the vertical direction.

Wherein, second connecting plate 307 is connected with the bottom of roof 1 equally, light source subassembly 2 is connected with second connecting plate 307 through the sliding part, the regulation portion of being connected with first connecting plate 301 is as main sliding part, in order to drive light source subassembly 2 and remove, simultaneously, the cooperation of second connecting plate 307 and sliding part can be regarded as from sliding part cooperation light source subassembly 2 and remove, make light source subassembly 2 slide along vertical direction on second connecting plate 307 in step, in order to reach the effect of light source subassembly 2 vertical migration on first connecting plate 301 and second connecting plate 307.

Further, the first coupling plate 301 and the second coupling plate 307 are oppositely disposed at both sides of the light source assembly 2.

Specifically, the both sides of light source subassembly 2 are connected with first connecting plate 301 and second connecting plate 307 respectively, and when first connecting plate 301 and second connecting plate 307 set up relatively, adjusting part 3 has better direction effect for, and then makes the removal of light source subassembly 2 between first connecting plate 301 and second connecting plate 307 more steady, in the same direction as smooth for light source subassembly 2 output beam is more stable.

Specifically, the sliding portion includes a second guide rail 308 and a second slider 309, and the second guide rail 308 is vertically provided on the second connection plate 307; the second slider 309 is connected to a side of the light source assembly 2 close to the second connecting plate 307, and the second slider 309 is slidably connected to the second guide rail 308.

The sliding part on one side of the second connecting plate 307 adopts a transmission mode of matching the guide rail sliding blocks, and is mutually matched and connected with the second sliding block 309 through the second guide rail 308, so that the sliding part has higher guiding precision, and the sliding of two sides of the light source assembly 2 is ensured to be stable.

In some embodiments, referring to fig. 1 to 3, the light source assembly 2 further includes a light machine 201, a reflector 202, and a light machine base 203, the light machine base 203 is connected to the position adjusting assembly 3, the light machine 201 is disposed on the light machine base 203, a light outlet of the light machine 201 is disposed opposite to the reflector 202, and the reflector 202 is configured to reflect a light beam emitted by the light machine 201, so that the light beam is reflected and then projected upwards and onto the light-transmitting plate 101.

In some embodiments, referring to fig. 4, the light beam is emitted from the inside of the optical machine 201 in an umbrella shape, and the image is very small when the light beam is emitted, and by setting the emission angle α in the horizontal direction, the horizontal distance L1 between the optical machine 201 and the reflecting mirror 202, and the vertical distance L2 between the reflecting mirror 202 and the transparent plate 101, the image is projected onto the transparent plate 101, and the image becomes the imaging size L3 of the light beam onto the transparent plate 101; according to the reflection principle of light, the relation among the emission angles alpha, L1, L2 and L3 is as follows: 2 ═ L1+ L2 ═ tan α ═ L3; the method is characterized in that the method is influenced by machining errors and assembly errors, errors can be generated by L1 and L2, so that the size of L3 is influenced, the accuracy of an imaging size L3 from a light beam to a light transmission plate is adjusted by adjusting the vertical distance L2 from a reflection mirror 202 to the light transmission plate 101, the relation between L2 and L3 is L2 which is L3/2tan alpha-L1, a light outlet of an optical machine 201 is arranged opposite to the reflection mirror 202, therefore, the position of the optical machine 201 on an optical machine base 203 is adjusted by adopting a position adjusting assembly 3, the distance L2 between the reflection mirror 202 and the light transmission plate 101 is changed, and the optimal projection effect is achieved.

Furthermore, the light source assembly 2 further includes a fixing plate 204 connected to the base 203, the reflector 202 is disposed on the fixing plate 204, and a first protrusion (not shown) and a second protrusion (not shown) are disposed at edges of two opposite sides of the fixing plate 204, respectively, and a distance between the first protrusion and the top plate 1 is equal to a distance between the second protrusion and the top plate 1.

It is understood that, when the light source module 2 is assembled, in order to ensure that the angle between the reflector 202 disposed on the fixing plate 204 and the plane where the light-transmitting plate 101 is located is a predetermined angle, the fixing plate 204 provided with the reflector 202 and the light source module 2 needs to be assembled in parallel with the top plate 1. This embodiment corresponds respectively through the edge in the relative both sides of fixed plate 204 and is provided with first boss and second boss, and first boss and second boss can be the fixed plate along the step face of the relative both sides edge of length direction, and through comparing first boss and second boss respectively and roof 1 between the distance equal, can judge whether parallel between fixed plate 204 and the roof 1 to make the assembly personnel to the assembly of fixed plate 204. It can also be understood that it is necessary to ensure that the two step surfaces of the first boss and the second boss are coplanar and parallel to the plane of the top plate 1. Wherein, the first boss and the second boss can be respectively arranged on one side of the fixing plate 204 close to the top plate 1.

Specifically, the fixing plate 204 includes a first fixing area 2041 connected to the bottom of the optical bench 203, and a second fixing area 2042 for fixing the reflector 202; the fixing plate 204 is divided into two areas, the first fixing area 2041 is used for connecting the bottom of the optical machine base 203, the second fixing area 2042 is used for fixing the reflector 202, so that the reflector 202 and the optical machine 201 on the optical machine base 203 can move synchronously, under the condition that the distance L1 between the optical machine 201 and the reflector 202 is kept unchanged, a better projection effect can be obtained on the light-transmitting plate 101 only by adjusting the distance L2 between the reflector 202 and the light-transmitting plate 101, and the adjusting mode is simple and effective; in this embodiment, the first boss is disposed at one side edge of the fixing plate 204 away from the reflector 202, the second boss is disposed at one side edge of the fixing plate 204 away from the optical base 203, and whether the fixing plate 204 and the top plate 1 are parallel can be determined by determining whether the distances between the first boss and the top plate 1 and the distances between the second boss and the top plate are equal.

In some embodiments, the first fixing area 2041 is provided with two protrusions connected to the edges of two opposite sides of the bottom of the optical bench 203, and after the bottom of the optical bench 203 is connected to the two protrusions, the bottom of the optical bench 203 and the fixing plate 204 are parallel to each other and have a gap parallel to the top plate 1.

Through being equipped with two archs on the relative both sides of first fixed area 2041, two archs are connected with ray apparatus seat 203 bottom, make and form the clearance between ray apparatus seat 203 bottom and the first fixed area 2041 to avoid ray apparatus seat 203 bottom and first fixed area 2041 direct contact, and then reduce the processing requirement to first fixed area 2041 surface flatness, in order to guarantee that fixed plate 204 passes through the bottom of ray apparatus seat 203 and two bellied cooperation are connected and are kept parallel with roof 1.

In some embodiments, the fixing plate 204 is provided with a placing rack 205, the placing rack 205 is located right below the light-transmitting plate 101, the placing rack 205 includes a placing plate 2051 and a connecting groove 2052 provided on the placing plate 2051, edges of two opposite sides of the reflecting mirror 202 are fittingly connected with the connecting groove 2052, and after the reflecting mirror 202 is fixed on the placing rack 205 through the connecting groove 2052, the reflecting mirror 202 and the placing plate 2051 are parallel to each other with a gap.

Furthermore, the two connecting grooves 2052 are respectively arranged at the upper side and the lower side of the placing plate 2051, the edges of the two opposite sides of the reflector 202 are inserted along the two connecting grooves 2052 and are respectively matched and connected with the two connecting grooves 2052, the reflector 202 can be placed on the placing frame 205 on the fixing plate 204, so that the stability of the reflector 202 on the fixing plate 204 is improved, the reflector 202 can be further in threaded connection with the placing frame 205, the disassembly is convenient, the reflector 202 can be replaced or adjusted, and the maintenance cost of the three-dimensional printer is reduced; fix speculum 202 on rack 205 through the connecting groove 2052 after, speculum 202 with place and be parallel to each other between the board 2051, the speculum with place and leave the clearance between the board 2051, avoid speculum 202 and the surperficial direct contact who places board 2051, and then reduce the machining precision requirement to the surface smoothness of placing board 2051.

Further, the angle between the reflector 202 and the horizontal plane where the light-transmitting plate 101 is located is 30-60 °.

In some embodiments, the angle of the reflector 2 has an effect on the collimation of the finally formed light surface, the included angle between the reflector 202 and the horizontal plane where the light-transmitting plate 101 is located can be adjusted between 30 ° and 60 °, and the angle can be selected according to different requirements, so that the light beam reflected by the reflector 202 passes through the light-transmitting plate 101 to obtain a better light surface effect, wherein the angle is preferably 45 ° and a relatively ideal light surface effect can be obtained.

The following describes an embodiment of the three-dimensional printer according to the present invention in detail, and the embodiment is implemented on the premise of the technical solution of the present invention, and a detailed embodiment is given, but the scope of the present invention is not limited to the following embodiment.

A three-dimensional printer is disclosed, referring to fig. 1 to 3, and comprises a top plate 1, a light source assembly 2 and a position adjusting assembly 3, wherein the top plate 1 is provided with a light-transmitting plate 101; the light source component 2 is positioned below the top plate 1 and can move in the vertical direction; position adjustment subassembly 3 is connected with light source subassembly 2, and position adjustment subassembly 3 is used for adjusting the distance between light source subassembly 2 and the light-transmitting board 101 to the projected area of the light beam on the light-transmitting board 101 that the adjustment light source subassembly 2 sent.

The position adjusting assembly 3 comprises a first connecting plate 301, a first guide rail 302, a first sliding block 303 and an adjusting part, wherein the first connecting plate 301 is connected with the bottom of the top plate 1; the first guide rail 302 is vertically arranged on the first connecting plate 301; the first slider 303 is connected to the light source assembly 2 and is movable along the length direction of the first guide rail 302; the adjusting part is used for controlling the position of the first slider 303 on the first guide rail 302 to adjust the distance between the light source assembly 2 and the light-transmitting panel 101.

The adjusting portion comprises an adjusting rod 304, an adjusting block 305 and an adjusting seat 306, the adjusting seat 306 is connected with the first guide rail 302, a connecting hole is formed in the adjusting seat 306, the adjusting block 305 is arranged on the first sliding block 303, the adjusting rod 304 can move along the length direction of the connecting hole, one end of the adjusting rod 304 penetrates through the connecting hole and then can be abutted to the adjusting block 305, and the adjusting rod 304 is fixed on the adjusting seat 306 after the first sliding block 303 drives the adjusting block 304 to be adjusted to a preset position along with the adjusting rod 304.

The position adjustment assembly 3 further includes a second connection plate 307 and a sliding portion, the second connection plate 307 is connected to the bottom of the top plate 1, the sliding portion is connected to the light source assembly 2 and the second connection plate 307, respectively, and the sliding portion enables the light source assembly 2 to slide on the second connection plate 307 in the vertical direction.

The first and

second connection plates

301 and 307 are oppositely disposed at both sides of the light source assembly 2.

The sliding part comprises a second guide rail 308 and a second sliding block 309, and the second guide rail 308 is vertically arranged on the second connecting plate 307; the second slider 309 is connected to a side of the light source assembly 2 close to the second connecting plate 307, and the second slider 309 is slidably connected to the second guide rail 308.

The light source assembly 2 further includes a light machine 201, a reflector 202 and a light machine seat 203, the light machine seat 203 is connected to the position adjusting assembly 3, the light machine 201 is disposed on the light machine seat 203, a light outlet of the light machine 201 is disposed opposite to the reflector 202, and the reflector 202 is configured to reflect a light beam emitted by the light machine 201, so that the light beam is reflected and then projected upwards onto the light-transmitting plate 101.

The light source assembly 2 further includes a fixing plate 204 connected to the light base 203, the reflector 202 is disposed on the fixing plate 204, a first boss (not shown in the figure) and a second boss (not shown in the figure) are respectively disposed at edges of two opposite sides of the fixing plate 204, and a distance between the first boss and the top plate 1 is equal to a distance between the second boss and the top plate 1.

Be equipped with the rack 205 on the fixed plate 204, the rack 205 is located the light-transmitting plate 101 under, the rack 205 is including placing the board 2051 and establishing the connecting groove 2052 on placing the board 2051, and the edge and the connecting groove 2052 cooperation of the relative both sides of speculum 202 are connected, and after speculum 202 passes through the connecting groove 2052 to be fixed on the rack 205, speculum 202 with place between the board 2051 be parallel to each other and have the clearance.

The angle between the reflector 202 and the horizontal plane in which the light-transmitting plate 101 is located is 30-60 deg..

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A three-dimensional printer, comprising:

a top plate (1) provided with a light-transmitting plate (101);

a light source assembly (2) which is positioned below the top plate (1) and can move in the vertical direction;

the position adjusting assembly (3) is connected with the light source assembly (2); the position adjusting component (3) is used for adjusting the distance between the light source component (2) and the light transmitting plate (101) so as to adjust the projection area of the light beams emitted by the light source component (2) on the light transmitting plate (101).

2. The three-dimensional printer according to claim 1, characterized in that said position adjustment assembly (3) comprises a first connection plate (301), a first guide (302), a first slider (303) and an adjustment portion, said first connection plate (301) being connected to the bottom of said top plate (1); the first guide rail (302) is vertically arranged on the first connecting plate (301); the first sliding block (303) is connected with the light source component (2) and can move along the length direction of the first guide rail (302); the adjusting part is used for controlling the position of the first sliding block (303) on the first guide rail (302) so as to adjust the distance between the light source assembly (2) and the light-transmitting plate (101).

3. The three-dimensional printer according to claim 2, wherein the adjusting portion comprises an adjusting rod (304), an adjusting block (305) and an adjusting seat (306), the adjusting seat (306) is connected with the first guide rail (302), a connecting hole is formed in the adjusting seat (306), the adjusting block (305) is arranged on the first sliding block (303), the adjusting rod (304) can move along the length direction of the connecting hole, one end of the adjusting rod (304) can abut against the adjusting block (305) after passing through the connecting hole, and the adjusting rod (304) is fixed on the adjusting seat (306) after the first sliding block (303) drives the adjusting block (305) to be adjusted to a preset position along with the adjusting rod (304).

4. The three-dimensional printer according to claim 2, characterized in that said position adjustment assembly (3) further comprises a second connection plate (307) and a sliding portion, said second connection plate (307) being connected to the bottom of said top plate (1), said sliding portion being connected to said light source assembly (2) and said second connection plate (307), respectively, said sliding portion enabling said light source assembly (2) to slide in a vertical direction on said second connection plate (307).

5. The three-dimensional printer according to claim 4, characterized in that said first connection plate (301) and said second connection plate (307) are oppositely arranged on either side of said light source assembly (2).

6. The three-dimensional printer according to claim 4, characterized in that said sliding portion comprises a second guide (308) and a second slider (309), said second guide (308) being vertically provided on said second connection plate (307); the second sliding block (309) is connected with one side, close to the second connecting plate (307), of the light source assembly (2), and the second sliding block (309) is connected with the second guide rail (308) in a sliding mode.

7. The three-dimensional printer according to claim 1, wherein the light source assembly (2) further comprises a light machine (201), a reflector (202), and a light machine base (203), the light machine base (203) is connected to the position adjusting assembly (3), the light machine (201) is disposed on the light machine base (203), a light outlet of the light machine (201) is disposed opposite to the reflector (202), and the reflector (202) is configured to reflect the light beam emitted by the light machine (201), so that the light beam is reflected and then projected upwards onto the light-transmitting plate (101).

8. The three-dimensional printer according to claim 7, wherein the light source assembly (2) further comprises a fixing plate (204) connected to the light base (203), the reflector (202) is disposed on the fixing plate (204), a first boss and a second boss are correspondingly disposed at edges of two opposite sides of the fixing plate (204), and a distance from the first boss to the top plate (1) is equal to a distance from the second boss to the top plate (1).

9. The three-dimensional printer according to claim 8, wherein a placing frame (205) is disposed on the fixing plate (204), the placing frame (205) is located under the light-transmitting plate (101), the placing frame (205) comprises a placing plate (2051) and a connecting groove (2052) disposed on the placing plate (2051), edges of two opposite sides of the reflecting mirror (202) are connected with the connecting groove (2052) in a matching manner, and after the reflecting mirror (202) is fixed on the placing frame (205) through the connecting groove (2052), the reflecting mirror (202) and the placing plate (2051) are parallel to each other and have a gap.

10. The three-dimensional printer according to claim 8, characterized in that the angle between the mirror (202) and the horizontal plane in which the light-transmitting plate (101) is located is 30 ° -60 °.