CN220499967U - Three-dimensional forming equipment - Google Patents

Abstract

The utility model discloses a three-dimensional forming device, which is characterized in that two driving parts are matched with a transmission part to drive a functional part to move, so that a power source is increased, a larger torque can be provided for the movement of the transmission part, and the functional part can reach a higher speed. The main technical scheme of the utility model is as follows: a stereolithography apparatus, comprising: a support body; at least one functional piece, the functional piece is connected with the supporting main body in a sliding way; the driving mechanism is in one-to-one correspondence with the functional pieces, and comprises at least one driving unit, wherein the driving unit comprises a first driving piece, a second driving piece and a transmission piece, the transmission piece is respectively connected with the first driving piece and the second driving piece in a transmission way, and the transmission piece is connected with the functional pieces. The method is mainly used for 3D printing.

Description

Three-dimensional forming equipment

Technical Field

The utility model relates to the technical field of three-dimensional forming, in particular to three-dimensional forming equipment.

Background

The spraying type three-dimensional forming equipment continuously conveys materials into the printing head through the extruder, the printing head heats and melts the materials, the machine controls the printing head and the forming platform to move relatively, the printing head sprays according to a preset outline to form a layer of model, then the machine controls the printing head and the printing platform to be mutually far away from the thickness of the layer of model, the next layer of spraying is continued, and three-dimensional printing is realized by stacking layer by layer.

The movement of the printing head or the forming platform depends on the driving of a power mechanism, the power mechanism generally comprises a single motor and a synchronous belt, as in the patent with the publication number of CN207140361U, a Y-axis assembly of the 3D printer is disclosed, the Y-axis assembly comprises a Y-axis guide beam which can vertically lift, a Y-axis motor is arranged on the Y-axis guide beam, a Y-axis driving belt wheel is connected on the output shaft of the Y-axis motor, a Y-axis driven belt wheel is arranged on the Y-axis guide beam, the Y-axis synchronous belt is connected between the Y-axis driving belt wheel and the Y-axis driven belt wheel, a Y-axis sliding block is connected with the Y-axis synchronous belt, and a printing nozzle is arranged on the Y-axis sliding block. The motor drives the printing head or the forming platform to move through the synchronous belt, the torque of the motor driving the synchronous belt to move can be increased along with the speed of the printing head or the forming platform, and the torque of a single motor is insufficient, so that the driving speed of the synchronous belt is limited, the moving speed of the printing head or the forming platform is limited, the step is easy to lose in the rapid printing process, and the improvement of the printing speed is severely limited.

In view of this, a torque shortage caused by a single motor drive becomes a problem to be solved.

Disclosure of Invention

In view of the above, the present utility model provides a three-dimensional molding apparatus, which solves the problem of insufficient driving force of a single motor.

In order to achieve the above purpose, the present utility model mainly provides the following technical solutions:

in one aspect, an embodiment of the present utility model provides a stereoscopic molding apparatus, including:

a support body;

at least one functional piece, the functional piece is connected with the supporting main body in a sliding way;

the driving mechanism is in one-to-one correspondence with the functional pieces, and comprises at least one driving unit, wherein the driving unit comprises a first driving piece, a second driving piece and a transmission piece, the transmission piece is respectively connected with the first driving piece and the second driving piece in a transmission way, and the transmission piece is connected with the functional pieces.

According to the three-dimensional forming equipment provided by the utility model, the two driving parts and the transmission part are matched to drive the functional part to move, so that the power source is increased, larger torque can be provided for the movement of the transmission part, and the functional part can reach higher speed. In the prior art, the movement of the printing head or the forming platform depends on the driving of a power mechanism, the power mechanism generally comprises a single motor and a synchronous belt, the torque of the motor can be increased along with the acceleration of the printing head or the forming platform, and the torque of the single motor is insufficient, so that the driving speed of the synchronous belt is limited, the movement speed of the printing head or the forming platform is limited, the step is easy to lose in the rapid printing process, and the improvement of the printing speed is severely limited. Compared with the prior art, in this application file, adopt two driving pieces to drive same driving piece jointly and remove, drive the function piece on the driving piece then, two driving pieces provide the moment of torsion for the removal or the rotation of driving piece jointly, then under the certain circumstances of driving piece power, provide bigger moment of torsion for the removal of driving piece, make driving piece remove or pivoted maximum speed obtain improving then, realize the fast movement of function piece, be difficult for losing the step because of the moment of torsion is not enough.

Drawings

Fig. 1 is a schematic structural diagram of a first stereoscopic forming apparatus according to an embodiment of the present utility model at a first viewing angle;

fig. 2 is a schematic structural diagram of a first stereoscopic forming apparatus according to an embodiment of the present utility model at a second view angle;

fig. 3 is a schematic structural diagram of a first stereoscopic forming apparatus according to an embodiment of the present utility model at a third view angle;

fig. 4 is an exploded view of a first stereoscopic forming device according to an embodiment of the present utility model at a third view angle;

fig. 5 is a schematic structural diagram of a first stereoscopic forming apparatus according to an embodiment of the present utility model at a fourth view angle;

fig. 6 is a schematic view of a part of a structure of a first stereo-forming apparatus according to an embodiment of the present utility model at a sixth view angle;

fig. 7 is a schematic cross-sectional structural diagram of a first stereoscopic forming apparatus according to an embodiment of the present utility model at a third view angle;

FIG. 8 is an enlarged view of region B of the stereolithography apparatus of FIG. 7;

fig. 9 is a schematic structural diagram of a second stereoscopic forming apparatus according to an embodiment of the present utility model at a first view angle;

fig. 10 is an exploded view of a second perspective molding apparatus according to an embodiment of the present utility model;

fig. 11 is a schematic view of a part of a structure of a second stereoscopic forming apparatus according to an embodiment of the present utility model at a first view angle;

Fig. 12 is an exploded view of a part of a structure of a second stereolithography apparatus according to an embodiment of the present utility model at a first view angle;

fig. 13 is a schematic structural diagram of a second stereoscopic forming apparatus according to an embodiment of the present utility model at a second view angle;

fig. 14 is an enlarged view of a region a of the stereolithography apparatus shown in fig. 13;

fig. 15 is a schematic structural diagram of a second stereoscopic forming apparatus according to an embodiment of the present utility model at a third view angle;

fig. 16 is a schematic structural diagram of a second stereoscopic forming apparatus according to an embodiment of the present utility model at a fourth view angle;

fig. 17 is a schematic structural diagram of a third stereoscopic forming apparatus according to an embodiment of the present utility model at a first view angle;

fig. 18 is a schematic structural diagram of a third stereoscopic forming apparatus according to an embodiment of the present utility model at a second view angle;

fig. 19 is a schematic structural diagram of a third perspective view of a third stereoscopic forming apparatus according to an embodiment of the present utility model;

fig. 20 is a schematic structural diagram of a third stereoscopic forming apparatus according to an embodiment of the present utility model at a fourth view angle;

fig. 21 is an exploded view of a third stereolithography apparatus according to an embodiment of the present utility model;

fig. 22 is a schematic view of a part of a third stereoscopic forming apparatus according to an embodiment of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description refers to the specific implementation, structure, characteristics and effects of the three-dimensional forming device according to the utility model with reference to the accompanying drawings and the preferred embodiments.

In one aspect, as shown in fig. 1-7, an embodiment of the present utility model provides a stereoscopic molding apparatus, including:

a support body 100;

at least one function member 200, the function member 200 being slidably coupled to the support body 100;

the driving mechanism is in one-to-one correspondence with the functional pieces 200, and comprises at least one driving unit, wherein the driving unit comprises a first driving piece 310, a second driving piece 320 and a transmission piece, the transmission piece is respectively in transmission connection with the first driving piece 310 and the second driving piece 320, and the transmission piece is connected with the functional pieces 200.

The support body 100 is a support structure of the stereolithography apparatus, may be part of a frame structure formed by profiles, and may be used to fix the position of the driving mechanism and provide a guiding function for the movement of the functional element 200. The functional piece 200 can be any part needing to be moved in the three-dimensional forming equipment, and the functional piece 200 can be a single part, can be an assembly, such as a printing head, a printing platform, a leveling piece and the like, and can also be a printing head assembly formed by a section bar and the printing head and the like. The stereolithography apparatus may include one or more functions 200, any of which corresponds to at least one set of drive mechanisms. The driving mechanism can comprise a single driving unit, namely one functional piece 200 corresponds to at least two driving pieces, and the functional piece 200 can reciprocate in a single direction; alternatively, the driving mechanism may further include two or more driving units, for example, the function element 200 corresponds to two driving units, that is, one function element 200 corresponds to two synchronous belts 330 and four driving elements, and by arranging two transmission elements, the function element 200 can move in multiple directions in a plane. The first driving member 310 and the second driving member 320 may be identical driving members with power, model, size, etc., or may be different driving members, such as different types and power sizes. The transmission members are respectively connected to the output ends of the first driving member 310 and the second driving member 320, and the transmission members are driven to move in a matched manner through friction, tooth connection or connection between the output ends and the transmission members. The first driving piece 310 and the second driving piece 320 drive the transmission piece to move at the same speed, and the first driving piece 310 and the second driving piece 320 simultaneously provide the transmission piece with the same-direction torque or the same-direction moving force, so that the transmission piece can move or rotate at a high speed, the printing speed of the three-dimensional forming equipment is provided, and the step loss is not easy to occur. Meanwhile, a high-power driving piece is not needed for improving the torque, and the situation that the local occupied space is too large is avoided. It will be appreciated that more drives may be provided per drive unit, e.g. the drive unit may also comprise a third drive.

The first driving member 310 and the second driving member 320 may be directly connected to the support body 100, or may be indirectly connected or not connected, so as to ensure that the relative positions of the first driving member 310 and the second driving member 320 and the support body 100 are fixed.

According to the three-dimensional forming equipment provided by the utility model, the two driving parts and the transmission part are matched to drive the functional part to move, so that the power source is increased, larger torque can be provided for the movement of the transmission part, and the functional part can achieve higher speed. In the prior art, the movement of the printing head or the forming platform depends on the driving of a power mechanism, the power mechanism generally comprises a single motor and a synchronous belt, the torque of the motor can be increased along with the acceleration of the printing head or the forming platform, and the torque of the single motor is insufficient, so that the driving speed of the synchronous belt is limited, the movement speed of the printing head or the forming platform is limited, the step is easy to lose in the rapid printing process, and the improvement of the printing speed is severely limited. Compared with the prior art, in this application file, adopt two driving pieces to drive same driving piece jointly and remove, drive the function piece on the driving piece then, two driving pieces provide the moment of torsion for the removal or the rotation of driving piece jointly, then under the certain circumstances of driving piece power, provide bigger moment of torsion for the removal of driving piece, make driving piece remove or pivoted maximum speed obtain improving then, realize the fast movement of function piece, be difficult for losing the step because of the moment of torsion is not enough.

Embodiments of the drive mechanism comprising a single drive unit and two drive units will be described further below.

In one embodiment, either drive mechanism includes a single drive unit for driving the function 200 to move in a single direction; the support body 100 includes a main frame 110 and at least one guide bracket connected to the main frame 110, and the function member 200 is slidably connected to the guide bracket. The first driving element 310 and the second driving element 320 are respectively connected with the guiding bracket and are respectively located at different sides of the functional element 200, and the first driving element 310 and the second driving element 320 are used for driving the transmission element to move or rotate in the same direction so as to drive the functional element 200 to move along the guiding bracket.

Wherein the driving unit is used for driving the functional element 200 to move in a single direction, and the driving unit can drive the functional element 200 to move in a positive direction and a negative direction of one direction. The drive unit may drive the print head to move in either the positive or negative direction of the x-direction, as in the x-direction.

The first driving member 310 and the second driving member 320 may be directly connected to the guide bracket, or indirectly connected to the guide bracket through a support seat or the like. The guide bracket is provided in different directions and functions according to the function member 200, and is intended to be able to support the function member 200 and provide a guide function. If the functional piece 200 is a printing platform 210, the guiding support is a Y-axis guiding support 121, and may specifically be a Y-axis guiding profile, the main frame 110 includes a base 111, the base 111 may be formed by connecting a plurality of profiles vertically and horizontally, and the Y-axis guiding profile is fixed above the base 111. The first driving part 310 and the second driving part 320 are fixed to both ends of the Y-axis guide profile in the length direction, respectively, as shown in fig. 4, may be fixed by using a fixing frame 321, and the fixing frame 321 may be an approximate triangle frame. The transmission member is a timing belt 330, and the timing belt 330 is at least partially connected around the output shafts of the first driving member 310 and the second driving member 320. The synchronous belt 330 is wound around the output ends of the first driving member 310 and the second driving member 320 in the vertical plane, and is fixedly connected to the supporting frame at the bottom end of the printing platform 210. The support frame at the bottom end of the printing platform 210 is provided with pulleys, and the pulleys clamp the Y-axis guide profile from two sides of the Y-axis guide profile. The first driving member 310 and the second driving member 320 rotate in the same direction, and drive the synchronous belt 330 together to drive, so that the printing platform 210 moves along the Y-axis guiding support 121 in the Y-axis direction, and the first driving member 310 and the second driving member 320 simultaneously drive to increase torque, so that the printing platform 210 can move at a high speed.

If the functional component 200 is a print head 220, the guiding support is an X-axis guiding support 122, and the X-axis guiding support 122 may specifically include an X-axis guiding profile and X-axis moving supports connected to two ends of the X-axis guiding profile, the main frame 110 includes a gantry 112, the gantry 112 is mounted above the base 111, and the two X-axis moving supports are connected to the gantry 112 and can move in the Z-axis direction under the action of the gantry 112, and the X-axis guiding profile is located above the print platform 210 and extends in the X-axis direction perpendicular to the Y-axis guiding profile. The first driving part 310 and the second driving part 320 are respectively fixed on the X-axis moving bracket. The transmission member is a timing belt 330, and the timing belt 330 is at least partially connected around the output shafts of the first driving member 310 and the second driving member 320. The timing belt 330 is wound around the output ends of the first driving member 310 and the second driving member 320 in a vertical plane, and is fixedly connected to a supporting frame at the rear side of the print head 220. The carriage at the rear side of the print head 220 is provided with pulleys, which sandwich the X-axis guide profile from both sides of the X-axis guide profile. The first driving member 310 and the second driving member 320 rotate in the same direction, and drive the synchronous belt 330 together to drive, so that the printing head 220 moves along the X-axis guiding support 122 in the X-axis direction, and the first driving member 310 and the second driving member 320 simultaneously drive and increase torque, so that the printing head 220 can move at a high speed.

For another example, the functional element 200 is a printhead assembly formed by a printhead 220 and an X-axis guiding support 122, the main frame 110 includes a base 111, the guiding support is a Z-axis guiding support, and the Z-axis guiding support may be a support extending in two Z-axis directions of the gantry 112, that is, the gantry 112 is a part of the main frame 110 when the functional element 200 is the printhead 220, and when the functional element 200 is a printhead module, the part of the gantry 112 is a guiding support. The Z-axis guide bracket is connected to the base 111, the x-axis guide bracket 122 is slidably connected to the Z-axis guide bracket, and the first driving member 310 and the second driving member 320 are respectively fixed to the Z-axis guide bracket. The transmission piece is a screw rod 340, two ends of the screw rod 340 are respectively and coaxially connected with output shafts of the first driving piece 310 and the second driving piece 320 by adopting a coupler, and an X-axis guide bracket 122 of the printing head assembly is in threaded connection with the screw rod 340. The first driving member 310 and the second driving member 320 rotate in the same direction, and jointly drive the screw rod 340 to rotate, so that the printing head assembly moves along the Z-axis guiding support in the Z-axis direction through the pushing action of threads, and the first driving member 310 and the second driving member 320 simultaneously drive and increase torque, so that the printing head 220 can move at a high speed.

It will be appreciated that the foregoing embodiments of the functional elements 200 as the print platform 210, the print head 220, and the print head assembly may occur simultaneously in the same stereolithography apparatus, e.g., the stereolithography apparatus includes three functional elements 200 including three driving mechanisms, three driving units, six driving elements including the first driving element 310 and the second driving element 320 corresponding to the print platform 210, and the first driving element 310 and the second driving element 320 corresponding to the print head 220, and the first driving element 310 and the second driving element 320 corresponding to the print head assembly. Alternatively, embodiments of the print platform 210, the print head 220, and the print head assembly may also be present in a stereolithography apparatus, either alone or in combination.

In another embodiment, the driving mechanism includes two driving units, namely a first driving unit and a second driving unit, wherein the first driving unit and the second driving unit are different driving units, and a transmission member of the first driving unit and a transmission member of the second driving unit are respectively in driving connection with the functional member 200, so that the functional member 200 moves in multiple directions in a plane. The arrangement of the components in the first drive unit and the second drive unit may be various, and two specific ways are exemplified below. To facilitate distinguishing the timing belts 330 in the different driving units in the drawings, one of the timing belts 330 of the driving units is defined as a first timing belt 331, and the other one of the timing belts 330 of the driving units is defined as a second timing belt 332, it can be understood that the first and second timing belts 331 and 332 each follow the characteristics of the timing belt 330.

The two embodiments have the following common features: the support main body 100 includes a main frame 110, a second guide frame 140 and two first guide frames 130, where the two first guide frames 130 are connected to the main frame 110, the two first guide frames 130 are spaced apart, the second guide frame 140 is slidably connected to the two first guide frames 130, and the functional element 200 is slidably connected to the second guide frame 140. The transmission member of the first driving unit is fixedly connected with the functional member 200, and the transmission member of the first driving unit is in rolling connection with the second guide frame 140. The transmission member of the second driving unit is fixedly connected with the functional member 200, and the transmission member of the second driving unit is in rolling connection with the second guide frame 140. The second guide frames 140 may be respectively perpendicular to and slidably connected with the two first guide frames 130, and the two first guide frames 130 may be disposed at a parallel interval.

More specifically:

9-16, the driving units further include a guiding assembly, where the guiding assembly includes a first guiding member 341, a second guiding member 342 and a third guiding member 343, the first guiding member 341 and the second guiding member 342 are respectively connected with the second guiding frame 140 and are respectively located at different sides of the functional member 200, the first driving member 310 and the second driving member 320 of each driving unit are respectively connected with different first guiding frames 130 and are located at the same side of the second guiding frame 140, the third guiding member 343 is connected with the first guiding frame 130 where the second driving member 320 is located, and the third guiding member 343 and the second driving member 320 are respectively located at different sides of the second guiding frame 140. The third guide 343 of the first driving unit and the third guide 343 of the second driving unit are respectively disposed on different first guide frames 130.

The transmission part is a synchronous belt 330, a first end and a second end of the synchronous belt 330 are respectively connected with two opposite sides of the functional part 200, and the synchronous belt 330 is sequentially wound with a first guide part 341, a first driving part 310, a second driving part 320, a third guide part 343 and a second guide part 342 from the direction from the first end to the second end.

The timing belt 330 of the first driving unit is wound around the first guide 341, the second guide 342, and the third guide 343 of the first driving unit, and the timing belt 330 of the second driving unit is wound around the first guide 341, the second guide 342, and the third guide 343 of the second driving unit.

The first guide 341, the second guide 342 and the third guide 343 may be guide wheels, the main frame 110 may be a frame with a rectangular outer contour, including a bottom frame and four columns, the two first guide frames 130 are located above the main frame 110 and connected with the top ends of the four columns of the main frame 110, and further include two reinforcing plates disposed between the two first guide frames 130, two ends of the reinforcing plates are respectively connected with the two first guide frames 130, and the two reinforcing plates are respectively located at different ends of the first guide frames 130, so that the two reinforcing plates, the two first guide frames 130 and the main frame 110 enclose a square frame structure. The first guide frame 130 includes a base plate coupled to the main frame 110 and a Y-axis guide bar disposed on the base plate. The second guide frame 140 includes an X-axis profile bracket and sliding blocks located at two sides of the X-axis profile bracket, and the sliding blocks are slidably connected to the Y-axis guide bars. The function 200 may be a printhead that is slidably coupled to the X-axis profile support. The first guide 341 and the second guide 342 are respectively disposed on the sliding blocks, the first driving element 310 and the second driving element 320 are respectively disposed at the first ends of the two first guide frames 130, and the third guide 343 is disposed at the second end of the first guide frame 130 where the second driving element 320 is located. The first driving element 310 and the second driving element 320 may be directly connected to different first guide frames 130, or may be indirectly connected by using a supporting seat, so that the first driving element 310 and the second driving element 320 may be respectively close to different first guide frames 130.

The first synchronous belt 331 and the second synchronous belt 332 are respectively disposed around the guide assembly, the first driving member 310 and the second driving member 320 on a horizontal plane, and since the first synchronous belt 331 and the second synchronous belt 332 have overlapping areas, the two driving units can be disposed up and down, that is, the first synchronous belt 331 is disposed above the second synchronous belt 332. The first end of the first timing belt 331 and the first end of the second timing belt 332 are connected to opposite sides of the function member 200.

In the driving process, the first driving member 310 and the second driving member 320 of the same driving unit are driven in the same direction, for example, the synchronous belt 330 is driven clockwise, and the driving directions of the driving units can be the same or different, so that the print head moves in different directions in the plane. The transmission member of the first driving unit is driven to move the function member 200 in both the negative direction of the first direction and the negative direction of the second direction, or to move the function member 200 in both the positive direction of the first direction and the positive direction of the second direction. The transmission member of the second driving unit is driven to move the function member 200 in both the negative direction of the first direction and the positive direction of the second direction, or to move the function member 200 in both the positive direction of the first direction and the negative direction of the second direction. The first direction may be an X-axis direction, and the second direction may be a Y-axis direction, for example, the driving directions of the first driving members 310 in the two driving units are the same, and the driving is performed at the same speed, for example, the synchronous belt 330 is driven clockwise, the first driving unit makes the print head move in the positive direction of the X-axis direction and the positive direction of the Y-axis direction, the second driving unit makes the print head move in the positive direction of the X-axis direction and the negative direction of the Y-axis direction, and then the print head moves on the X-axis profile support along the X-axis direction; when the driving directions of the first driving member 310 in the two driving units are different and the driving is performed at the same speed, for example, one driving the synchronous belt 330 clockwise and the other driving the synchronous belt 330 clockwise, the first driving unit makes the print head move in the negative direction of the X-axis direction and the negative direction of the Y-axis direction, the second driving unit makes the print head move in the positive direction of the X-axis direction and the negative direction of the Y-axis direction, and the second guide frame 140 moves along the first guide frame 130 to drive the print head to move in the Y-axis direction; when the driving speeds of the first driving members 310 in the two driving units are different, the print head is caused to move obliquely, and various moving directions can be controlled by the moving direction and speed of the synchronous belt 330, and the structure according to this embodiment can be realized, which is not described one by one in this embodiment.

Since the positions of the first driving element 310 of the first driving unit and the second driving element 320 of the second driving unit overlap in the vertical direction, and in order to facilitate the arrangement of the timing belt 330 above and below the two driving units, in one embodiment, as shown in fig. 9 to 10, the supporting body 100 further includes two fixing bases 150, and the first driving element 310 and the second driving element 320 are respectively connected to the first guide frame 130 through the two fixing bases 150. The fixing base 150 includes a fixing base opening and a fixing base cavity connected to the fixing base opening, and the first driving member 310 and the second driving member 320 each include a driving member main body 301 and a driving wheel 302.

The driving element main body 301 of the first driving element 310 of the first driving element and the driving element main body 301 of the second driving element 320 of the second driving element are respectively located at two opposite sides of the outside of the fixing seat 150, the output ends of the two driving element main bodies 301 are respectively inserted into the inner cavity of the fixing seat, the two driving wheels 302 are located in the inner cavity of the fixing seat and respectively connected with the output ends of the corresponding driving element main bodies 301, and the synchronous belts 330 of the first driving element and the second driving element respectively extend into the inner cavity of the fixing seat from the openings of the fixing seat and are wound on the corresponding driving wheels 302.

The driver body 301 may be a driving motor. For the same holder 150, the first driving piece 310 and the second driving piece 320 connected to the holder 150 are driving pieces from different driving units. The two driving motors are respectively fixed at the upper side and the lower side of the fixed seat 150, and the rotating shafts of the driving motors are inserted into the inner cavities of the fixed seat 150. The two driving wheels 302 are in the inner cavity of the fixing seat and are connected with the rotating shaft of the driving motor, so that the positions of the two driving wheels 302 and the two synchronous belts 330 in the vertical direction are closer, the overall layout rule of the driving mechanism is compact, the distribution range of the connecting positions of different synchronous belts 330 on the functional piece 200 can be reduced due to the close-range arrangement of the synchronous belts 330, vibration caused by the fact that the force application positions of the different synchronous belts 330 are separated by a long distance is avoided, and the problem that the connection of the shorter functional piece 200 is inconvenient is avoided.

In addition, the three-dimensional forming device further comprises a printing platform mechanism positioned in the main frame 110, and the printing platform mechanism comprises a Z-axis guiding unit and a printing platform, wherein the Z-axis guiding unit comprises a platform driving piece, a platform synchronous belt, two driving wheels and two screw rods, the two screw rods are respectively in threaded connection with the printing platform and are close to the edges of different sides of the printing platform, and the two screw rods are respectively in rotary connection with the main frame 110. The two driving wheels are respectively fixed on the two screw rods, the platform driving piece is connected with the main frame 110, and the platform synchronous belt is arranged around the platform driving piece and the two driving wheels. The platform driving piece is used for driving the platform synchronous belt to rotate, then drives the screw rod to rotate through two driving wheels, and drives the printing platform to move close to the printing head or away from the printing head through the pushing action of the screw rod and the threads of the printing platform.

In other embodiments, as shown in fig. 17-22, the driving units further include a first guiding element 341, a second guiding element 342, and a third guiding element 343, where the first guiding element 341 and the second guiding element 342 are respectively connected to the second guiding frame 140 and are respectively located on different sides of the functional element 200, the first driving element 310 and the second driving element 320 of each driving unit are connected to the same first guiding frame 130 and are located on different sides of the second guiding frame 140, and the third guiding element 343 is connected to the first guiding frame 130 different from the second guiding frame 320 and is located on the same side of the second guiding frame 140 as the second driving element 320. The third guide 343 of the first driving unit and the third guide 343 of the second driving unit are respectively disposed on different first guide frames 130.

The first end and the second end of the synchronous belt 330 are respectively connected with two opposite sides of the functional element 200, and the synchronous belt 330 is sequentially wound with the first guide 341, the third guide 343, the second driving element 320, the first driving element 310 and the second guide 342 from the direction from the first end to the second end.

The function 200 may be a printhead. The main frame 110 may be a supporting frame with a square outer contour formed by vertically and horizontally connecting profiles, and the guiding mechanism may be disposed above the main frame 110 as in the previous embodiment, or may be integrated in the main frame 110, for example, two first guiding frames 130 are located between the top profile and the bottom profile of the main frame 110. In a more specific embodiment, as shown in fig. 18 and 21, the first guide frame 130 includes a Y-axis guide bar 131, a first driver support 132, and a second driver support 133. The first driving piece support 132 and the second driving piece support 133 are both connected with the main frame 110, two ends of the Y-axis guide bar 131 are respectively connected with the first driving piece support 132 and the second driving piece support 133, the second guide frame 140 comprises an X-axis guide bar and sliding blocks connected to two ends of the X-axis guide bar, the two sliding blocks are respectively and slidably connected to the two Y-axis guide bars 131, and the printing head is slidably connected to the X-axis guide bar. The first driver 310 and the second driver 320 are connected to the first driver support 132 and the second driver support 133, respectively, and the third guide 343 is connected to the second driver support 133. The first driver seat 132 and the second driver seat 133 may each include a seat cavity, and the first driver 310 and the second driver 320 may each include a driver body 301 and a driver 302. The driver body 301 of the first driver 310 is located outside the first driver support 132, with its output end extending into the support cavity, and the driver 302 of the first driver 310 is located in the support cavity and connected to the output end of the first driver 310. The driver body 301 of the second driver 320 is located outside the second driver support 133, and its output end extends into the support cavity, and the driving wheel 302 of the second driver 320 is located in the support cavity and connected to the output end of the second driver 320. The timing belt 330 extends into the support cavities of the first driver support 132 and the second driver support 133, respectively, and is connected to the driving wheels 302 of the first driver 310 and the second driver 320, respectively. Similar to the above embodiments of the first synchronous belt 331 and the second synchronous belt 332, the first synchronous belt 331 and the second synchronous belt 332 are also disposed up and down, and the heights of the first synchronous belt 331 and the second synchronous belt 332 can be adjusted by adjusting the heights of the first driving member support 132 and the second driving member support 133, which is not described herein.

In one embodiment, as shown in fig. 13 and 22, the driving unit includes an auxiliary guide 344, and the auxiliary guide 344 is connected to the support body 100. At least one auxiliary guide 344 is arranged on the first driving member 310 at a parallel interval, and the winding directions of the auxiliary guide 344 and the synchronous belt 330 on the first driving member 310 are opposite. And/or the second driver 320 is provided with at least one auxiliary guide 344 in parallel spaced relation. The direction of the wrap around of the timing belt 330 on the auxiliary guide 344 and the second drive 320 is opposite.

The auxiliary guide 344 serves to increase the contact area of the timing belt 330 with the first driver 310 and/or the second driver 320, avoiding the problem of slipping due to the contact area being too small. Particularly in the embodiment in which the drive unit further comprises a guide assembly, the direction of extension of the timing belt 330 on both sides of the first drive member 310 and/or the second drive member 320 is approximately perpendicular, resulting in that the contact range of the timing belt 330 with the first drive member 310 and/or the second drive member 320, in particular with the driving wheel 302, is only approximately one fourth in circumferential direction, resulting in insufficient friction or toothed area, and easy slipping. In a specific embodiment, as shown in fig. 13, when the first driving member 310 and the second driving member 320 are located on different first guide frames 130, an auxiliary guiding member 344 is disposed for each of the first driving member 310 and the second driving member 320, the auxiliary guiding member 344 is a guiding wheel, and the auxiliary guiding member 344 is located between the first driving member 310 and the second driving member 320 of the same driving unit and is closer to the second guide frame 140 than the driving wheel 302, and is matched with the reverse winding of the synchronous belt 330 on the driving wheel 302 and the auxiliary guiding member 344, so that the contact area of the synchronous belt 330 on the driving wheel 302 is larger. In another embodiment, as shown in fig. 22, when the first driving member 310 and the second driving member 320 are located on the same first guide frame 130, two auxiliary guiding members 344 are disposed in parallel for each second driving member 320, the auxiliary guiding members 344 are guiding wheels, the two auxiliary guiding members 344 are distributed on different sides of the driving wheel 302 of the second driving member 320, and the two auxiliary guiding members 344 are closer to the second guide frame 140. Reverse winding of the timing belt 330 on the capstan 302 and the adjacent auxiliary guide 344 results in a larger contact area of the timing belt 330 on the capstan 302.

In one embodiment, as shown in fig. 7 to 8 and 13 to 14, the stereolithography apparatus further includes at least one tension adjuster 400, the tension adjuster 400 being connected to the support body 100, the tension adjuster 400 being connected to the adjustment body, the tension adjuster 400 being for moving the adjustment body to adjust the tension of the timing belt 330.

Because of the rapid movement of the functional element 200, the acceleration of the functional element 200 during the acceleration process will cause the tension of the synchronous belt 330 to increase, and under the action of the tension for a long time, the synchronous belt 330 will generate unrecoverable deformation, which causes the synchronous belt 330 to lengthen, and affects the guiding effect. By providing the tension adjusting member 400, the degree of tension of the timing belt 330 can be adjusted.

More specifically, the tension adjusting member 400 includes a fixing portion 410, a moving portion 420, and an adjusting portion 430, where the fixing portion 410 is connected to the support body 100, and the fixing portion 410 includes a sliding cavity, and the moving portion 420 is located in the sliding cavity and slidably abuts against an inner wall of the sliding cavity. The adjusting body is connected to the moving part 420, and the adjusting part 430 is connected to the fixed part 410 and the moving part 420, respectively, for driving the moving part 420 to move relative to the fixed part 410, so as to adjust the tension of the timing belt 330. The adjusting part 430 includes an adjusting bolt passing through the fixed part 410 and screw-coupled with the moving part 420. The adjusting body is provided according to the composition of the driving unit, such as in one embodiment, the driving unit includes only the first driving member 310 and the second driving member 320, and the adjusting body is the first driving member 310 or the second driving member 320. As shown in fig. 7-8, the adjusting body is taken as a first driving member 310, and the functional member 200 is taken as an example of the printing platform 210. The fixing portion 410 is connected to a side of the Y-axis guiding profile remote from the second driving member 320, and a sliding cavity of the fixing portion 410 is opened toward the direction perpendicular to the Y-axis guiding profile. The moving part 420 is inserted into the sliding chamber through the sliding chamber opening and is movable along the sliding chamber in the Y-axis guide profile extending direction. The fixing portion 410 is provided with a through hole at an end portion remote from the second driving member 320, and is screw-coupled to the moving portion 420 after the adjusting bolt is inserted into the through hole. By manually screwing the adjusting bolt, the moving part 420 can drive the first driving piece 310 to move in the extending direction of the Y-axis guiding profile, and then the synchronous belt 330 is tensioned.

In another embodiment, the driving unit includes a guiding assembly, the guiding assembly is connected to the supporting body 100, the synchronous belt 330 is wound around the guiding assembly, and the adjusting body is the guiding assembly, the first driving member 310 or the second driving member 320. As shown in fig. 13-14, the guide assembly includes a first guide 341, a second guide 342, and a third guide 343, and the first driving member 310 and the second driving member 320 are located on different first guide frames 130, and the adjusting body is exemplified as the third guide 343. The fixing portion 410 is connected to a side of the first guide frame 130 away from the second driving member 320, and a sliding cavity of the fixing portion 410 is opened toward a direction perpendicular to the first guide frame 130. The moving part 420 is inserted into the sliding chamber through the sliding chamber opening, and is movable along the sliding chamber in the extending direction of the first guide frame 130. The fixing portion 410 is provided with a through hole at an end portion remote from the second driving member 320, and is screw-coupled to the moving portion 420 after the adjusting bolt is inserted into the through hole. By manually screwing the adjusting bolt, the moving part 420 can drive the third guide member 343 to move in the extending direction of the first guide frame 130, so that the synchronous belt 330 is tensioned.

In some other embodiments, the stereolithography apparatus may have a plurality of tension adjusters 400, such as two, and the adjustment bodies of the two tension adjusters 400 are the first driver 310 and the second driver 320, respectively.

In one embodiment, the function 200 is connected with a cable. The stereolithography apparatus further includes a cable protector 500, and the cable is connected to the cable protector 500. The cable protector 500 includes a drag chain, or flexible tank chain, into which a cable is inserted, and protects the cable from breakage while not affecting the cable to follow movements such as a print head.

In other embodiments of the present application:

in one aspect, an embodiment of the present utility model provides a stereoscopic molding apparatus, including:

a support body 100;

at least one function member 200, the function member 200 being slidably coupled to the support body 100;

the driving mechanism is in one-to-one correspondence with the functional pieces 200, and comprises at least one driving unit, wherein the driving unit comprises a first driving piece 310, a second driving piece 320 and a transmission piece, the transmission piece is respectively in transmission connection with the first driving piece 310 and the second driving piece 320, and the transmission piece is connected with the functional pieces 200.

Wherein, the first driving piece 310 and the second driving piece 320 are both connected with the support body 100;

the driving mechanism includes a single driving unit for driving the function member 200 to move in a single direction;

the support body 100 includes a main frame 110 and at least one guide bracket connected to the main frame 110, and the function member 200 is slidably connected to the guide bracket;

The first driving element 310 and the second driving element 320 are respectively connected with the guiding bracket and are respectively located at different sides of the functional element 200, and the first driving element 310 and the second driving element 320 are used for driving the transmission element to move or rotate in the same direction so as to drive the functional element 200 to move along the guiding bracket.

The main frame 110 includes a base 111, the guide support is a Y-axis guide support 121, the Y-axis guide support 121 is connected with the base 111, the functional component 200 is a printing platform 210, the transmission component is a synchronous belt 330, and the synchronous belt 330 is at least partially connected with output shafts of the first driving component 310 and the second driving component 320 in a surrounding manner;

and/or, the main frame 110 comprises a portal frame 112, the guiding support is an X-axis guiding support 122, the X-axis guiding support 122 is movably connected with the portal frame 112, the functional component 200 is a printing head 220, the transmission component is a synchronous belt 330, and the synchronous belt 330 is at least partially connected with output shafts of the first driving component 310 and the second driving component 320 in a surrounding manner;

and/or, the main frame 110 comprises a base 111, the guide support is a Z-axis guide support, the Z-axis guide support is connected with the base 111, the functional component 200 is a print head assembly, the transmission component is a screw rod 340, the screw rod 340 is respectively connected with output shafts of the first driving component 310 and the second driving component 320, and the print head assembly is in threaded connection with the screw rod 340.

The driving mechanism comprises a first driving unit and a second driving unit, the first driving unit and the second driving unit are different driving units, and a transmission part of the first driving unit and a transmission part of the second driving unit are respectively in driving connection with the functional part 200 so as to enable the functional part 200 to move in multiple directions in a plane.

The supporting body 100 includes a main frame 110, a second guide frame 140 and two first guide frames 130, wherein the two first guide frames 130 are connected with the main frame 110, the two first guide frames 130 are arranged at intervals, and the second guide frames 140 are respectively connected with the two first guide frames 130 in a sliding manner;

the functional element 200 is slidably connected with the second guide frame 140;

the transmission part of the first driving unit is fixedly connected with the functional part 200, and the transmission part of the first driving unit is in rolling connection with the second guide frame 140; the transmission member of the first driving unit is driven to move the function member 200 in both the negative direction of the first direction and the negative direction of the second direction, or to move the function member 200 in both the positive direction of the first direction and the positive direction of the second direction;

the transmission member of the second driving unit is fixedly connected with the function member 200, and the transmission member of the second driving unit is in rolling connection with the second guide frame 140, and the transmission member of the second driving unit is driven to move the function member 200 in the negative direction of the first direction and the positive direction of the second direction at the same time, or to move the function member 200 in the positive direction of the first direction and the negative direction of the second direction at the same time.

The second guide frames 140 are respectively perpendicular to and slidingly connected with the two first guide frames 130; the two first guide frames 130 are arranged in parallel and at intervals;

the driving unit further comprises a first guide 341, a second guide 342 and a third guide 343, wherein the first guide 341 and the second guide 342 are respectively and rotatably connected with the second guide frame 140 and positioned on different sides of the functional member 200;

the transmission part is a synchronous belt 330, the synchronous belt 330 of the first driving unit is wound on a first guide 341, a second guide 342 and a third guide 343 of the first driving unit, and the synchronous belt 330 of the second driving unit is wound on the first guide 341, the second guide 342 and the third guide 343 of the second driving unit;

the first driving part 310 and the second driving part 320 of each driving unit are respectively connected with different first guide frames 130 and are positioned at the same side of the second guide frame 140;

the third guiding element 343 is connected with the first guiding frame 130 where the second driving element 320 is located, and the third guiding element 343 and the second driving element 320 are located at different sides of the second guiding frame 140;

the third guide 343 of the first driving unit and the third guide 343 of the second driving unit are respectively disposed on different first guide frames 130;

The first end and the second end of the synchronous belt 330 are respectively connected with the functional piece 200, and the synchronous belt 330 is sequentially wound with the first guide piece 341, the first driving piece 310, the second driving piece 320, the third guide piece 343 and the second guide piece 342 from the direction from the first end to the second end.

The supporting body 100 further includes two fixing bases 150, and the first driving element 310 and the second driving element 320 are respectively connected with the first guide frame 130 through the two fixing bases 150;

the fixing seat 150 comprises a fixing seat opening and a fixing seat inner cavity communicated with the opening, and the first driving piece 310 and the second driving piece 320 comprise a driving piece main body 301 and a driving wheel 302;

the driving element main body 301 of the first driving element 310 of the first driving element and the driving element main body 301 of the second driving element 320 of the second driving element are respectively located at two opposite sides of the outside of the fixing seat 150, the output ends of the two driving element main bodies 301 are respectively inserted into the inner cavity of the fixing seat, the two driving wheels 302 are located in the inner cavity of the fixing seat and respectively connected with the output ends of the corresponding driving element main bodies 301, and the synchronous belts 330 of the first driving element and the second driving element respectively extend into the inner cavity of the fixing seat from the openings of the fixing seat and are wound on the corresponding driving wheels 302.

The driving unit further includes a first guide 341, a second guide 342, and a third guide 343, where the first guide 341 and the second guide 342 are respectively rotatably connected to the second guide frame 140 and located on different sides of the functional element 200;

the first driving part 310 and the second driving part 320 of each driving unit are connected with the same first guide frame 130 and are positioned at different sides of the second guide frame 140;

the third guiding element 343 is connected with the first guiding frame 130 different from the second driving element 320, and the third guiding element 343 and the second driving element 320 are positioned on the same side of the second guiding frame 140;

the third guide 343 of the first driving unit and the third guide 343 of the second driving unit are respectively disposed on different first guide frames 130;

the first end and the second end of the timing belt 330 are respectively connected with the functional element 200, and the timing belt 330 is sequentially wound around the first guide 341, the third guide 343, the second driving element 320, the first driving element 310, and the second guide 342 from the first end to the second end.

The first guide frame 130 includes a Y-axis guide bar 131, a first driver support 132, and a second driver support 133;

the first driving piece support 132 and the second driving piece support 133 are connected with the main frame 110, two ends of the Y-axis guide rod 131 are respectively connected with the first driving piece support 132 and the second driving piece support 133, and the second guide frame 140 is connected with the Y-axis guide rod 131 in a sliding manner;

The first driver 310 and the second driver 320 are connected to the first driver support 132 and the second driver support 133, respectively, and the third guide 343 is connected to the second driver support 133.

The driving unit comprises an auxiliary guide 344, the auxiliary guide 344 is connected with the supporting main body 100, and the transmission part is a synchronous belt 330;

at least one auxiliary guide piece 344 is arranged on the first driving piece 310 at a parallel interval, and the winding directions of the auxiliary guide piece 344 and the synchronous belt 330 on the first driving piece 310 are opposite;

and/or, the second driving member 320 is provided with at least one auxiliary guiding member 344 at a parallel interval, and the winding directions of the auxiliary guiding member 344 and the synchronous belt 330 on the second driving member 320 are opposite.

The stereo lithography apparatus further includes at least one tension adjuster 400, the tension adjuster 400 being connected to the support body 100, the tension adjuster 400 being connected to the adjustment body, the tension adjuster 400 being configured to move the adjustment body to adjust the tension of the timing belt 330;

the adjusting body is a first driving piece 310 or a second driving piece 320;

alternatively, the driving unit further includes a guide assembly connected to the support body 100, and the timing belt 330 is further wound around the guide assembly, and the adjusting body is the guide assembly, the first driving member 310, or the second driving member 320.

The tensioning adjustment piece 400 comprises a fixing portion 410, a moving portion 420 and an adjustment portion 430, wherein the fixing portion 410 is connected with the support main 100, the fixing portion 410 comprises a sliding cavity, and the moving portion 420 is located in the sliding cavity and is in sliding abutting connection with the inner wall of the sliding cavity;

the adjusting body is connected with the moving part 420, and the adjusting part 430 is respectively connected with the fixed part 410 and the moving part 420, and is used for driving the moving part 420 to move relative to the fixed part 410 so as to adjust the tension of the synchronous belt 330;

the adjusting part 430 includes an adjusting bolt passing through the fixed part 410 and screw-coupled with the moving part 420.

Wherein, the functional piece 200 is connected with a cable;

the three-dimensional forming equipment further comprises a cable protector 500, and the cable is connected with the cable protector 500;

the cable protector 500 includes a tow chain.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A stereolithography apparatus, comprising:

a support body;

at least one functional element slidingly connected with the support body;

the driving mechanism is in one-to-one correspondence with the functional pieces, the driving mechanism comprises at least one driving unit, the driving unit comprises a first driving piece, a second driving piece and a transmission piece, the transmission piece is respectively in transmission connection with the first driving piece and the second driving piece, and the transmission piece is connected with the functional pieces.

2. The stereolithography apparatus according to claim 1, wherein the first drive member and the second drive member are each connected to the support body;

the driving mechanism comprises a single driving unit for driving the functional element to move in a single direction;

the support main body comprises a main frame and at least one guide bracket, the guide bracket is connected with the main frame, and the functional piece is in sliding connection with the guide bracket;

the first driving piece and the second driving piece are respectively connected with the guide support and are respectively positioned on different sides of the functional piece, and the first driving piece and the second driving piece are used for driving the transmission piece to move or rotate in the same direction so as to drive the functional piece to move along the guide support.

3. The stereolithography apparatus as claimed in claim 2, wherein,

the main frame comprises a base, the guide support is a Y-axis guide support, the Y-axis guide support is connected with the base, the functional part is a printing platform, the transmission part is a synchronous belt, and the synchronous belt is at least partially connected with output shafts of the first driving part and the second driving part in a surrounding mode;

and/or the main frame comprises a portal frame, the guide support is an X-axis guide support, the X-axis guide support is movably connected with the portal frame, the functional part is a printing head, the transmission part is a synchronous belt, and the synchronous belt is at least partially connected with the output shafts of the first driving part and the second driving part in a surrounding manner;

and/or, the main frame comprises a base, the guide support is a Z-axis guide support, the Z-axis guide support is connected with the base, the functional part is a printing head assembly, the transmission part is a screw rod, the screw rod is respectively connected with the output shafts of the first driving part and the second driving part, and the printing head assembly is in threaded connection with the screw rod.

4. The stereolithography apparatus as claimed in claim 1, wherein,

The driving mechanism comprises a first driving unit and a second driving unit, the first driving unit and the second driving unit are different driving units, and a transmission part of the first driving unit and a transmission part of the second driving unit are respectively in driving connection with the functional part so as to enable the functional part to move in multiple directions in a plane.

5. The stereolithography apparatus according to claim 4, wherein the support body includes a main frame, a second guide frame, and two first guide frames, both of the first guide frames being connected to the main frame, and the two first guide frames being disposed at intervals, the second guide frame being slidably connected to the two first guide frames, respectively;

the functional piece is connected with the second guide frame in a sliding way;

the transmission part of the first driving unit is fixedly connected with the functional part, and the transmission part of the first driving unit is in rolling connection with the second guide frame; the transmission member of the first driving unit is driven to move the functional member in the negative direction of the first direction and the negative direction of the second direction at the same time, or to move the functional member in the positive direction of the first direction and the positive direction of the second direction at the same time;

The transmission part of the second driving unit is fixedly connected with the functional part, the transmission part of the second driving unit is in rolling connection with the second guide frame, and the transmission part of the second driving unit is driven so as to enable the functional part to move along the negative direction of the first direction and the positive direction of the second direction at the same time or enable the functional part to move along the positive direction of the first direction and the negative direction of the second direction at the same time.

6. The stereolithography apparatus according to claim 5, wherein the second guide frames are respectively perpendicular to and slidably connected to the two first guide frames; the two first guide frames are arranged in parallel at intervals;

the driving unit further comprises a first guide piece, a second guide piece and a third guide piece, wherein the first guide piece and the second guide piece are respectively and rotatably connected with the second guide frame and are positioned on different sides of the functional piece;

the transmission part is a synchronous belt, the synchronous belt of the first driving unit is wound on the first guide part, the second guide part and the third guide part of the first driving unit, and the synchronous belt of the second driving unit is wound on the first guide part, the second guide part and the third guide part of the second driving unit;

The first driving piece and the second driving piece of each driving unit are respectively connected with different first guide frames and are positioned on the same side of the second guide frames;

the third guide piece is connected with the first guide frame where the second driving piece is located, and the third guide piece and the second driving piece are located on different sides of the second guide frame;

the third guide piece of the first driving unit and the third guide piece of the second driving unit are respectively arranged on different first guide frames;

the first end and the second end of the synchronous belt are respectively connected with the functional piece, and the synchronous belt is sequentially wound on the first guide piece, the first driving piece, the second driving piece, the third guide piece and the second guide piece from the direction from the first end to the second end.

7. The stereolithography apparatus as claimed in claim 5, wherein,

the supporting main body further comprises two fixing seats, and the first driving piece and the second driving piece are respectively connected with the first guide frame through the two fixing seats;

the fixing seat comprises a fixing seat opening and a fixing seat inner cavity communicated with the opening, and the first driving piece and the second driving piece comprise a driving piece main body and a driving wheel;

The driving piece main part of the first driving piece of the first driving unit, the driving piece main part of the second driving piece of the second driving unit are respectively located on two opposite sides outside the fixing base, the output ends of the two driving piece main parts are respectively inserted into the inner cavity of the fixing base, the two driving wheels are located in the inner cavity of the fixing base and are respectively connected with the corresponding output ends of the driving piece main parts, the transmission piece is a synchronous belt, and the synchronous belt of the first driving unit and the synchronous belt of the second driving unit respectively extends into the inner cavity of the fixing base through the opening of the fixing base and is connected with the corresponding driving wheels in a winding mode.

8. The stereolithography apparatus as claimed in claim 5, wherein,

the driving unit further comprises a first guide piece, a second guide piece and a third guide piece, wherein the first guide piece and the second guide piece are respectively and rotatably connected with the second guide frame and are positioned on different sides of the functional piece;

the first driving piece and the second driving piece of each driving unit are connected with the same first guide frame and are positioned on different sides of the second guide frame;

the third guide piece is connected with the first guide frame which is different from the second drive piece, and the third guide piece and the second drive piece are positioned on the same side of the second guide frame;

The third guide piece of the first driving unit and the third guide piece of the second driving unit are respectively arranged on different first guide frames;

the transmission part is a synchronous belt, a first end and a second end of the synchronous belt are respectively connected with the functional part, and the synchronous belt is sequentially wound on the first guide part, the third guide part, the second driving part, the first driving part and the second guide part from the direction from the first end to the second end;

the first guide frame comprises a Y-axis guide rod, a first driving piece support and a second driving piece support;

the first driving piece support and the second driving piece support are connected with the main frame, two ends of the Y-axis guide rod are respectively connected with the first driving piece support and the second driving piece support, and the second guide frame is connected with the Y-axis guide rod in a sliding manner;

the first driving piece and the second driving piece are respectively connected with the first driving piece support and the second driving piece support, and the third guide piece is connected with the second driving piece support.

9. The stereolithography apparatus as claimed in claim 5, wherein,

the driving unit comprises an auxiliary guide piece, the auxiliary guide piece is connected with the supporting main body, and the transmission piece is a synchronous belt;

The first driving piece is provided with at least one auxiliary guide piece at intervals in parallel, and the winding directions of the auxiliary guide piece and the synchronous belt on the first driving piece are opposite;

and/or the second driving piece is provided with at least one auxiliary guide piece at intervals in parallel, and the winding connection directions of the auxiliary guide piece and the synchronous belt on the second driving piece are opposite.

10. The stereolithography apparatus as claimed in claim 1, wherein,

the transmission part is a synchronous belt, the three-dimensional forming equipment further comprises at least one tensioning adjusting part, the tensioning adjusting part is connected with the supporting main body, and the tensioning adjusting part is connected with an adjusting main body and used for moving the adjusting main body so as to adjust the tension of the synchronous belt;

the adjusting body is the first driving piece or the second driving piece;

or, the driving unit further comprises a guide assembly, the guide assembly is connected with the supporting main body, the synchronous belt is further wound on the guide assembly, and the adjusting main body is the guide assembly, the first driving piece or the second driving piece;

the tensioning adjusting piece comprises a fixing part, a moving part and an adjusting part, wherein the fixing part is connected with the supporting main body, the fixing part comprises a sliding cavity, and the moving part is positioned in the sliding cavity and is in sliding abutting connection with the inner wall of the sliding cavity;

The adjusting main body is connected with the moving part, and the adjusting part is respectively connected with the fixed part and the moving part and is used for driving the moving part to move relative to the fixed part so as to adjust the tension of the synchronous belt;

the adjusting part comprises an adjusting bolt, and the adjusting bolt penetrates through the fixed part and is in threaded connection with the moving part;

and/or

The functional piece is connected with a cable; the three-dimensional forming equipment further comprises a cable protection piece, wherein the cable is connected with the cable protection piece; the cable protector includes a tow chain.