3D printing equipment

Abstract

The utility model discloses 3D printing equipment which comprises a translation driving device, a translation seat, a power roller, a rotation driving device, a paving part, a first tensioning frame, a second tensioning frame, a light-transmitting coating part, a feeding device, an adjusting device, a light curing device, a printing workbench and a lifting device. The printing workbench is provided with a working area; the lifting device is used for driving the printing workbench to ascend and descend. The feeding device is mounted on the translation seat and is used for supplying a printing material to the light-transmitting coating part; the translation driving device is used for driving the translation seat to translate; and the power roller is rotatably mounted on the translation seat. In the single operation stroke of the translation seat, material spreading, light curing and demolding release can be realized, demolding of the light-transmitting coating part can be realized without descending the printing worktable, the step of pulling demolding by moving the printing worktable can be omitted, and the working efficiency is improved; and the influence of the release force on a printed workpiece is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of 3D printing equipment. BACKGROUND

[0002] 3D printing technology is as the quick prototyping process of the rapid prototyping manufacturing article by layer printing, with shorten product development cycle, save production cost and so on Advantages, and by many industries. In 3D printing process, generally need to be first by feeding device print material is fed on light transmission coating component, then print material is coated on printing workbench by the transmission of light transmission coating component, again by photocuring device towards print material emit light to make the print material solidified by light irradiation. But the coating effect of existing 3D printing equipment is poor, it is easy to affect printing effect, and, it is not convenient for the replacement of light transmission coating component, so it can not meet the industry requirements. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a kind of 3D printing equipment, which can improve coating effect, and facilitate the replacement of light transmission coating component.

[0004] The purpose of the utility model is realized by the following technical scheme:

[0005] A kind of 3D printing equipment, 3D printing equipment, including translation drive device, translation seat, power roller, rotary drive device, flatten component, first tensioning frame, second tensioning frame, light transmission coating component, feeding device, adjusting device, photocuring device, printing workbench and lifting device;The printing workbench is provided with work area;The lifting device is used to drive printing workbench to lift;The feeding device is installed on translation seat, and feeding device is used to supply print material towards light transmission coating component;The translation drive device is used to drive translation seat to translate;The power roller is rotatably installed on translation seat;The rotary drive device is installed on translation seat, and is used to drive power roller to rotate;The first tensioning frame is hinged on translation seat, and the first tensioning frame includes first tensioning roller;The second tensioning frame is hinged on translation seat, and second tensioning frame includes second tensioning roller;The adjusting device is installed on translation seat, and adjusting device is used to adjust the interval between first tensioning roller and second tensioning roller;The light transmission coating component is in the form of sleeve ring, and light transmission coating component is sleeved on power roller, first tensioning roller, second tensioning roller and flatten component;The light transmission coating component is used to coat print material at work area;The photocuring device is used to emit light towards print material to make the print material solidified by light irradiation;The flatten component is installed on the lower end of translation seat, and the flatten component includes light transmission part;The lower end of the light transmission part is provided with guide surface for light transmission coating component to pass through.

[0006] The first and second tension rollers are arranged on two sides of the translation seat.

[0007] The guide surface is a plane; a plane formed by the central axes of the first and second tension rollers is a tension reference plane, the power roller is located above the tension reference plane, and the guide surface is located below the tension reference plane.

[0008] The adjusting device comprises a rotating body, a pawl, an elastic component and an elastic reset element; the rotating body comprises an axle, a transmission gear and a ratchet wheel; the axle is rotatably mounted on the translation seat; the transmission gear and the ratchet wheel are fixed on the axle respectively; the elastic reset element is arranged between the rotating body and the translation seat; the first tension frame is provided with a first tooth pattern and engages with the transmission gear; the second tension frame is provided with a second tooth pattern and engages with the first tension frame; the pawl is hinged on the translation seat, and the elastic component is arranged between the pawl and the translation seat; the pawl is used for being buckled into the tooth groove of the ratchet wheel; and the elastic component is used for providing an elastic force for buckling the pawl into the tooth groove of the ratchet wheel.

[0009] The elastic reset element is used for providing an elastic force for rotating the axle to reset to a working position; when the axle is in the working position, the distance between the first and second tension rollers is maximum.

[0010] The elastic reset element comprises a coil spring mounted in the translation seat; one end of the coil spring is connected with the axle, and the other end is connected with the translation seat.

[0011] The first tension frame further comprises a first tooth plate; the first tooth plate is hinged on the translation seat, and the first tension roller is rotatably mounted on the first tooth plate; the first tooth plate is provided with the first tooth pattern and engages with the transmission gear; the second tension frame further comprises a second tooth plate; the second tooth plate is hinged on the translation seat, and the second tension roller is rotatably mounted on the second tooth plate; the second tooth plate is provided with the second tooth pattern and engages with the first tooth plate.

[0012] Both ends of the axle are fixed with a transmission gear; the first tension frame comprises two first tooth plates; the two first tooth plates are hinged on the translation seat respectively, and the first tension roller is rotatably mounted between the two first tooth plates; the two first tooth plates correspond to the transmission gears at both ends of the axle respectively, and each first tooth plate engages with the corresponding transmission gear; the second tension frame comprises two second tooth plates; the two second tooth plates are hinged on the translation seat respectively, and the second tension roller is rotatably mounted between the two second tooth plates; the two second tooth plates correspond to the two first tooth plates respectively, and each first tooth plate engages with the corresponding second tooth plate.

[0013] The flattened part is located between the first tension roller and the second tension roller in the transmission direction of the light-transmitting coating part; the 3D printing device comprises two power rollers; the two power rollers are rotatably installed on the translation seat respectively; the rotation driving device is used for driving the two power rollers to rotate; the light-transmitting coating part passes through the two power rollers.

[0014] The 3D printing device further comprises a guide roller rotatably installed on the translation seat, and the light-transmitting coating part further passes through the guide roller.

[0015] Compared with the prior art, the 3D printing device has the following beneficial effects:

[0016] The 3D printing device provided by the utility model has the advantages that: the first tension roller and the second tension roller are adjusted by the adjusting device, so that the light-transmitting coating part is in a tension state, the loosening phenomenon of the light-transmitting coating part is reduced during the coating process of the light-transmitting coating part, the light-transmitting coating part is coated in the tension state, the coating effect is improved, the printing effect is improved, the light-transmitting coating part is convenient to replace, the tension adjustment operation is convenient and fast, the tension adjustment time is saved, the adjusting efficiency is improved, the material is laid, the light curing is performed, and the demolding is achieved in the single running stroke of the translation seat, the light-transmitting coating part is demolded without lowering the printing workbench, the step of moving the printing workbench to achieve the pulling demolding is saved, time is saved, the work efficiency is improved, and the demolding force is greatly reduced, and the influence of the demolding force on the printing workpiece is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is another direction schematic view of the utility model;

[0019] Figure 3 It is a structural schematic view of the translation driving device and the translation seat;

[0020] Figure 4 It is an explosion view of the translation driving device and the translation seat;

[0021] Figure 5 It is a sectional view of the translation driving device and the translation seat;

[0022] Figure 6Structure diagram of the translation seat and the adjusting device in an assembled state;

[0023] Figure 7 Structure diagram of the translation seat and the adjusting device in a disassembled state;

[0024] Figure 8 Structure diagram of the translation seat and the adjusting device in another disassembled state;

[0025] Figure 9 Exploded view of the feeding device;

[0026] Figure 10 Exploded view of the feeding device;

[0027] Figure 11 Exploded view of the piston pushing device;

[0028] In the drawings: 100, adjusting device; 110, translation seat; 120, rotating body; 121, wheel shaft; 122, transmission gear; 123, ratchet wheel; 130, first tensioning frame; 131, first toothed plate; 132, first tensioning roller; 133, first tooth trace; 140, second tensioning frame; 141, second toothed plate; 142, second tensioning roller; 143, second tooth trace; 151, pawl; 160, elastic return element; 200, feeding device; 210, power roller; 220, rotary drive device; 221, first drive motor; 222, driving pulley; 223, driven pulley; 224, transmission belt; 230, guide roller; 310, material rack; 311, first bearing seat; 312, second bearing seat; 313, guide groove; 314, first straight groove segment; 315, circular-arc groove segment; 316, second straight groove segment; 317, mounting groove; 318, stopper; 320, material cylinder; 321, discharge pipe; 322, piston; 323, protruding part; 324, built-in groove; 330, piston pushing device; 331, first lead screw; 332, power component; 333, first lead screw nut; 334, transmission component; 335, connecting component; 400, translation drive device; 410, support frame; 411, second lead screw; 412, translation lead screw drive device; 413, second lead screw nut; 415, guide rail; 416, sliding block; 500, flattening component; 510, flattening seat; 520, light-transmitting part; 521, guide surface; 600, light-transmitting coating component; 601, lifting device; 611, third lead screw; 612, lifting lead screw drive device; 613, third lead screw nut; 614, guide rod; 615, sliding sleeve; 616, printing workbench; 617, working area; 620, light-curing device. DETAILED DESCRIPTION

[0029] Hereinafter, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0030] As shown in Figures 1-11 A 3D printing device, comprising a translation driving device 400, a translation seat 110, a power roller 210, a rotation driving device 220, a flattening component 500, a first tensioning frame 130, a second tensioning frame 140, a light-transmitting coating component 600, a feeding device 200, an adjusting device 100, a light-curing device 620, a printing workbench 616 and a lifting device 601; the printing workbench 616 is provided with a working area 617; the lifting device 601 is used to drive the printing workbench 616 to lift; the feeding device 200 is installed on the translation seat 110, and the feeding device 200 is used to supply printing material towards the light-transmitting coating component 600; the translation driving device 400 is used to drive the translation seat 110 to translate; the power roller 210 is rotatably installed on the translation seat 110; the rotation driving device 220 is installed on the translation seat 110 and is used to drive the power roller 210 to rotate; the first tensioning frame 130 is hinged on the translation seat 110, and the first tensioning frame 130 comprises a first tensioning roller 132; the second tensioning frame 140 is hinged on the translation seat 110, and the second tensioning frame 140 comprises a second tensioning roller 142; the adjusting device 100 is installed on the translation seat 110, and the adjusting device 100 is used to adjust the distance between the first tensioning roller 132 and the second tensioning roller 142; the light-transmitting coating component 600 is in the form of a sleeve ring, and the light-transmitting coating component 600 is sleeved on the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the flattening component 500; the light-transmitting coating component 600 is used to coat printing material at the working area 617; the light-curing device 620 is used to emit light towards the printing material to cure the printing material irradiated by the light; the flattening component 500 is installed at the lower end of the translation seat 110, and the flattening component 500 comprises a light-transmitting part 520; the lower end of the light-transmitting part 520 is provided with a guide surface 521 for the light-transmitting coating component 600 to pass through.

[0031] In use, by adjusting the adjusting device 100, the distance between the first tension roller 132 and the second tension roller 142 is increased, so that the light-transmitting coating member 600 wrapped around the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening member 500 is in a tension state as the distance between the first tension roller 132 and the second tension roller 142 increases, then the printing workbench 616 is driven to rise by the lifting device 601, the translation seat 110 is driven to move left by the translation driving device 400, the power roller 210 is driven to rotate by the rotation driving device 220, the light-transmitting coating member 600 is driven to transmit under the driving of the power roller 210 and coats and flattens the printing material in a tension state at the working area 617, and the light-curing device 620 emits light to the printing material coated at the working area 617 to cure and form the printing material irradiated by the light into a material layer, as the light-transmitting coating member 600 continues to transmit, the light-transmitting coating member 600 separates from the material layer and is demolded, because the light-transmitting coating member 600 coats the printing material in a tension state during transmission, and the printing material can be evenly coated under the guiding action of the flattening member 500, the coating effect can be improved, and the printing effect can be improved; after the material layer is cured and formed, the light-transmitting coating member 600 separates from the material layer and is demolded, the printing workbench 616 is driven to descend by the lifting device 601, the translation seat 110 is driven to move right to the starting point by the translation driving device 400, then the translation seat 110 is driven to move left by the translation driving device 400, the power roller 210 is driven to rotate by the rotation driving device 220, the light-transmitting coating member 600 is driven to transmit under the driving of the power roller 210 and coats the printing material on the aforementioned material layer in a tension state, the light-curing device 620 emits light to the printing material coated on the aforementioned material layer to cure and form the next material layer, and then the product is made in a layer-by-layer printing and forming manner by continuously working in the above-mentioned manner.Therefore, the 3D printing equipment provided by the utility model can adjust the interval between the first tension roller 132 and the second tension roller 142 by means of the adjusting device 100, so that the light-transmitting coating component 600 is in a tension state, the loosening phenomenon of the light-transmitting coating component 600 can be reduced during the coating process of the light-transmitting coating component 600, the light-transmitting coating component 600 can be coated in a tension state, and the coating effect can be improved; on this basis, the light-transmitting coating component 600 can be guided by the flattening component 500 to coat the printing material evenly, so that the coating effect can be significantly improved, and the printing effect is further improved; in addition, when the light-transmitting coating component 600 needs to be replaced, the interval between the first tension roller 132 and the second tension roller 142 can be reduced by adjusting the adjusting device 100, so that the light-transmitting coating component 600 wound on the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening component 500 can be in a relaxed state as the interval between the first tension roller 132 and the second tension roller 142 is reduced; at this time, the light-transmitting coating component 600 can be removed, and then a new light-transmitting coating component 600 can be wound on the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening component 500, so that the light-transmitting coating component 600 can be conveniently replaced.

[0032] As a preferred embodiment of the present application, the printing material can adopt viscous material to improve the printing effect.

[0033] The light-transmitting part 520 can be used for the light emitted by the light curing device 620 to pass through; in use, the light emitted by the light curing device 620 can pass through the light-transmitting part 520 and the light-transmitting coating component 600 to irradiate on the printing material, so that the printing material irradiated by the light is cured.

[0034] Preferably, the light-transmitting coating component 600 can adopt a coating film or the like, as long as it can be used for coating. The light-transmitting coating component 600 is in the form of a sleeve ring, that is, at least one extension track of the light-transmitting coating component 600 is in the form of a loop and can be wound on the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening component 500, for example, the first end and the second end of the light-transmitting coating component 600 can be integrally formed or fixed together.

[0035] The rotating driving device 220 comprises a first driving motor 221, a driving pulley 222, a driven pulley 223 and a transmission belt 224; the first driving motor 221 is used to drive the driving pulley 222 to rotate, the driven pulley 223 is fixed on the power roller 210, and the transmission belt 224 is wound around the driving pulley 222 and the driven pulley 223. The body of the first driving motor 221 is fixed on the translation seat 110. In use, the driving pulley 222 is driven to rotate by the first driving motor 221, so as to drive the driven pulley 223 and the power roller 210 to rotate through the transmission belt 224.

[0036] Preferably, the 3D printing device comprises two power rollers 210, which are rotatably installed on the translation seat 110 respectively; the rotating driving device 220 is used to drive the two power rollers 210 to rotate; the light-transmitting coating member 600 is sleeved around the two power rollers 210, and the power of the transmission of the light-transmitting coating member 600 can be increased and the stability of the transmission of the light-transmitting coating member 600 can be improved by driving the light-transmitting coating member 600 through the two power rollers 210.

[0037] Specifically, the driven pulley 223 is fixed on each of the two power rollers 210; and the transmission belt 224 is wound around the driven pulleys 223 of the two power rollers 210.

[0038] The adjusting device 100 comprises a rotating body 120, a pawl 151, an elastic component and an elastic reset element 160; the rotating body 120 comprises an axle 121, a transmission gear 122 and a ratchet wheel 123; the axle 121 is rotatably installed on the translation seat 110; the transmission gear 122 and the ratchet wheel 123 are fixed on the axle 121 respectively; the elastic reset element 160 is arranged between the rotating body 120 and the translation seat 110; the first tensioning frame 130 is provided with a first toothed pattern 133, and the first tensioning frame 130 is engaged with the transmission gear 122; the second tensioning frame 140 is provided with a second toothed pattern 143, and the second tensioning frame 140 is engaged with the first tensioning frame 130; the pawl 151 is hinged on the translation seat 110, and the elastic component is arranged between the pawl 151 and the translation seat 110; the pawl 151 is used for buckling into the tooth groove of the ratchet wheel 123; the elastic component is used for providing the elastic force for urging the pawl 151 to buckle into the tooth groove of the ratchet wheel 123. In use, the axle 121 is positively rotated by the manual operation of the operator or by the external driving device, the ratchet wheel 123 and the transmission gear 122 are positively rotated along with the axle 121, the first tensioning frame 130 is swung under the driving action of the transmission gear 122, the second tensioning frame 140 is swung under the driving action of the first tensioning frame 130, and the interval between the first tensioning roller 132 and the second tensioning roller 142 can be adjusted along with the swinging of the first tensioning frame 130 and the second tensioning frame 140, and after the axle 121 is rotated to the position, the pawl 151 is buckled into the corresponding tooth groove of the ratchet wheel 123, thereby playing a locking role, so that the first tensioning frame 130 and the second tensioning frame 140 are kept at the corresponding positions, and the pawl 151 is separated from the ratchet wheel 123 by pulling the pawl 151, at this time, the axle 121 is elastically reset under the elastic force of the elastic reset element 160, the first tensioning frame 130 is swung for resetting under the driving action of the transmission gear 122, and the second tensioning frame 140 is swung for resetting under the driving action of the first tensioning frame 130, thus the interval between the first tensioning roller 132 and the second tensioning roller 142 can be flexibly and quickly adjusted, the tightness adjustment operation of the light-transmitting coating component 600 wound on the first tensioning roller 132 and the second tensioning roller 142 is more convenient and quick, the tightness adjustment time can be saved, and the adjustment efficiency is improved.

[0039] The elastic component comprises a spring, so that after the axle 121 is elastically reset under the elastic force of the elastic reset element 160 after the pawl 151 is separated from the ratchet wheel 123 by the user pulling the pawl 151, the pawl 151 can be reset to buckle into the tooth groove of the ratchet wheel 123 under the elastic force of the spring, thereby improving the convenience of operation and reducing the cost.

[0040] Of course, the elastic component can also be any elastic component available on the market, such as an elastic strip, etc.

[0041] The elastic return element 160 comprises a coil spring. One end of the coil spring is connected to the wheel shaft 121, and the other end is connected to the translation seat 110, so that after the user pulls the pawl 151 to separate the pawl 151 from the ratchet wheel 123, the wheel shaft 121 can be elastically returned under the elastic force of the coil spring. By using a coil spring as the elastic return element 160, the elastic force can be provided to the wheel shaft 121, and the installation is also facilitated.

[0042] Of course, in addition to the coil spring, the elastic return element 160 can also be any elastic return element available on the market, such as a torsion spring, etc., as long as it can play an elastic return role.

[0043] Preferably, the elastic reset element 160 is used to provide an elastic force to urge the wheel shaft 121 to reset to the working position, when the wheel shaft 121 is in the working position, the distance between the first tension roller 132 and the second tension roller 142 is the largest, when the wheel shaft 121 is in other positions in the rotation range, the distance between the first tension roller 132 and the second tension roller 142 is smaller than the distance between the first tension roller 132 and the second tension roller 142 when the wheel shaft 121 is in the working position, so that after the user pulls the pawl 151 to separate the pawl 151 from the ratchet wheel 123, the wheel shaft 121 can be elastically reset to the working position under the elastic force of the coil spring, at this time, the distance between the first tension roller 132 and the second tension roller 142 is the largest, and the light-transmitting coating member 600 wound on the power roller 210, the flattening member 500, the first tension roller 132 and the second tension roller 142 is in a tension state, if it is necessary to replace the light-transmitting coating member 600, the operator can manually rotate the wheel shaft 121 in the forward direction, the wheel shaft 121 rotates from the working position to other positions, the ratchet wheel 123 and the transmission gear 122 rotate forward with the wheel shaft 121, the first tension frame 130 swings under the driving action of the transmission gear 122, and the second tension frame 140 swings under the driving action of the first tension frame 130, and the distance between the first tension roller 132 and the second tension roller 142 can be reduced with the swinging of the first tension frame 130 and the second tension frame 140, and after the wheel shaft 121 is rotated to the position, the pawl 151 is buckled into the tooth groove of the ratchet wheel 123 under the elastic force of the elastic member, thereby playing a locking role, so that the first tension frame 130 and the second tension frame 140 are kept in the corresponding positions, facilitating the removal of the light-transmitting coating member 600 and the replacement of the light-transmitting coating member 600, and after the replacement of the light-transmitting coating member 600 is completed, the pawl 151 is only needed to be pulled to separate the pawl 151 from the ratchet wheel 123, at this time, the wheel shaft 121 is elastically reset to the working position under the elastic force of the elastic reset element 160, and then the pawl 151 is released, so that the pawl 151 is buckled into the tooth groove of the ratchet wheel 123 under the elastic force of the elastic member, thereby making the light-transmitting coating member 600 wound on the power roller 210, the flattening member 500, the first tension roller 132 and the second tension roller 142 be in a tension state, making the tension adjustment operation more convenient and fast, saving the tension adjustment time and improving the adjustment efficiency, and moreover, the wheel shaft 121 continuously remains in the working position under the combined action of the elastic force of the coil spring and the buckling of the pawl 151 during the transmission and coating process of the light-transmitting coating member 600 driven by the power roller 210, the first tension roller 132 and the second tension roller 142 are in the position with the largest distance therebetween, thereby making the light-transmitting coating member 600 continuously be in a tension state during the coating process, improving the coating stability, further reducing or even avoiding the loosening phenomenon of the light-transmitting coating member 600 during the coating process of the light-transmitting coating member 600, and further improving the coating effect.

[0044] In actual design, in order to facilitate the identification of the wheel shaft 121 in the working position, a first identification point can be arranged on the wheel shaft 121, and a second identification point is arranged on the translation seat 110. When the wheel shaft 121 is reset to the working position, the first identification point is directly opposite to the second identification point. If the wheel shaft 121 is rotated to other positions from the working position, the first identification point is misaligned with the second identification point, thereby facilitating the user to identify the position of the wheel shaft 121.

[0045] The translation seat 110 is provided with a mounting cavity, and the coil spring is located in the mounting cavity, which can facilitate the installation of the coil spring and avoid the exposure of the coil spring.

[0046] Preferably, the wheel shaft 121 is provided with a first embedding groove, the translation seat 110 is provided with a second embedding groove, the inner side end of the coil spring is fixed in the first embedding groove, and the outer side end of the coil spring is fixed in the second embedding groove, so as to facilitate the installation.

[0047] The first tensioning frame 130 further comprises a first toothed plate 131, the first toothed plate 131 is hinged on the translation seat 110, the first tensioning roller 132 is rotatably installed on the first toothed plate 131, the first toothed plate 131 is provided with the first tooth trace 133, and the first toothed plate 131 is engaged with the transmission gear 122. The second tensioning frame 140 further comprises a second toothed plate 141, the second toothed plate 141 is hinged on the translation seat 110, the second tensioning roller 142 is rotatably installed on the second toothed plate 141, the second toothed plate 141 is provided with the second tooth trace 143, and the second toothed plate 141 is engaged with the first toothed plate 131. During the transmission process of the light-transmitting coating component 600, the first tensioning roller 132 and the second tensioning roller 142 can respectively rotate relative to the first toothed plate 131 and the second toothed plate 141 under the driving action of the light-transmitting coating component 600, so as to reduce the friction. During the rotation process of the wheel shaft 121, the ratchet wheel 123 and the transmission gear 122 rotate with the wheel shaft 121, the first toothed plate 131 of the first tensioning frame 130 swings under the driving action of the transmission gear 122, at this time, the first tensioning roller 132 swings around the hinge point of the first toothed plate 131 with the first toothed plate 131, the second toothed plate 141 of the second tensioning frame 140 swings under the driving action of the first tensioning frame 130, and the second tensioning roller 142 swings around the hinge point of the second toothed plate 141 with the second toothed plate 141, thereby adjusting the positions of the first tensioning roller 132 and the second tensioning roller 142.

[0048] In the embodiment, the first toothed plate 131 is hinged to the translation seat 110 through a first pin shaft, the first toothed plate 131 is provided with a first through hole, the translation seat 110 is provided with a first mounting hole, the first pin shaft is mounted in the first mounting hole and passes through the first through hole, so that the first toothed plate 131 is hinged to the translation seat 110 in the above manner, and the first toothed plate 131 can swing around the central axis of the first pin shaft. The second toothed plate 141 is hinged to the translation seat 110 through a second pin shaft, the second toothed plate 141 is provided with a second through hole, the translation seat 110 is provided with a second mounting hole, the second pin shaft is mounted in the second mounting hole and passes through the second through hole, so that the second toothed plate 141 is hinged to the translation seat 110 in the above manner, and the second toothed plate 141 can swing around the central axis of the second pin shaft.

[0049] Of course, in addition to the above, the first toothed plate 131 and the second toothed plate 141 can also be hinged to the translation seat 110 through other existing structures.

[0050] Both ends of the wheel shaft 121 are fixed with a transmission gear 122; the first tensioning frame 130 includes two first toothed plates 131; the two first toothed plates 131 are hinged to the translation seat 110 respectively, and the first tensioning roller 132 is rotatably mounted between the two first toothed plates 131; the two first toothed plates 131 correspond to the transmission gears 122 at both ends of the wheel shaft 122 respectively, and each first toothed plate 131 is engaged with the corresponding transmission gear 122; the second tensioning frame 140 includes two second toothed plates 141; the two second toothed plates 141 are hinged to the translation seat 110 respectively, and the second tensioning roller 142 is rotatably mounted between the two second toothed plates 141; the two second toothed plates 141 correspond to the two first toothed plates 131 respectively, and each first toothed plate 131 is engaged with the corresponding second toothed plate 141. Through the above arrangement, the stability of the swing of the first tensioning frame 130 and the second tensioning frame 140 can be improved.

[0051] In the transmission direction A of the light-transmitting coating member 600, the flattening member 500 is located between the first tensioning roller 132 and the second tensioning roller 142.

[0052] The 3D printing equipment further includes a guide roller 230 rotatably mounted on the translation seat 110, and the light-transmitting coating member 600 is further wound on the guide roller 230, so that the guide roller 230 can guide the light-transmitting coating member 600.

[0053] Preferably, the 3D printing device further comprises two guide rollers 230, and the light-transmitting coating component 600 is arranged around the two guide rollers 230. In the transmission direction of the light-transmitting coating component 600, the two guide rollers 230 are located between the first tension roller 132 and the second tension roller 142, and the flattening component 500 is located between the two guide rollers 230.

[0054] Of course, in addition to the above, the number of guide rollers 230 can also be set according to actual needs, but the guide rollers 230 are set to two, which is the most preferred embodiment of the utility model.

[0055] The guide surface 521 is a plane, so that the printing material can be evenly coated on the workbench under the guidance of the guide surface 521 during the transmission of the light-transmitting coating component 600.

[0056] In the embodiment, the first tension roller 132 and the second tension roller 142 are located on the two sides of the translation seat 110, that is, if the first tension roller 132 is located on the left side of the translation seat 110, the second tension roller 142 is located on the right side of the translation seat 110; if the first tension roller 132 is located on the right side of the translation seat 110, the second tension roller 142 is located on the left side of the translation seat 110. The plane formed by the center axis of the first tension roller 132 and the center axis of the second tension roller 142 forms a tension reference surface, and the power roller 210 can be located above the tension reference surface, and the guide surface 521 can be located below the tension reference surface. During the transmission of the light-transmitting coating component 600, the parts of the light-transmitting coating component 600 are extruded, compressed and flattened from the first tension roller 132 to the flattening component 500 through one of the guide rollers 230, and the parts of the light-transmitting coating component 600 are gradually separated from the solidified material layer from the flattening component 500 to the second tension roller 142 through one of the guide rollers 230, and the parts of the light-transmitting coating component 600 are demolded. By using the above structure, the printing material can be evenly coated by the light-transmitting coating component 600, and the light-transmitting coating component 600 can be separated from the printing material to realize demolding, which can greatly reduce the demolding force and the influence of the demolding force on the printing part.

[0057] Preferably, the flattening component 500 further comprises a flattening seat 510, and the light-transmitting part 520 is arranged in the matching groove on the flattening seat 510. By using the above arrangement, the light-transmitting coating component 600 can be guided by the flattening component 500 to evenly coat the printing material, which is convenient for processing and manufacturing and can reduce the manufacturing cost.

[0058] The feeding device 200 comprises a rack 310, a barrel 320 and a piston pushing device 330, the rack 310 is installed on the translation base 110, the barrel 320 is detachably fixed on the rack 310, the barrel 320 is provided with a discharging pipe 321, the discharging pipe 321 is used for discharging towards the light-transmitting coating component 600, the piston 322 is movably installed in the barrel 320, and the piston pushing device 330 is used for pushing the piston 322 to move along the barrel 320. In use, the piston pushing device 330 works, the piston 322 is pushed by the piston pushing device 330 to move along the barrel 320, and the printing material in the barrel 320 is sprayed out of the discharging pipe 321 and discharged on the light-transmitting coating component 600 under the pushing action of the piston 322, so that the printing material can be supplied to the light-transmitting coating component 600.

[0059] Of course, in addition to this, the feeding device 200 can also adopt a nozzle device, a roller coating device and the like, as long as it can be used for supplying the printing material to the light-transmitting coating component 600, but the combination of the rack 310, the barrel 320 and the piston pushing device 330 is the most preferred embodiment of the utility model, the discharging can be realized by pushing the piston 322 by means of the piston pushing device 330, and after the printing material in the barrel 320 is used up, the barrel 320 can be detached from the rack 310, the piston is separated from the piston pushing device 330, and then a new barrel 320 is connected to the rack 310, so that the barrel 320 is convenient to detach, and the barrel 320 is convenient to replace.

[0060] The piston pushing device 330 comprises a first screw rod 331, a power component 332, a first screw rod nut 333 and a transmission member 334, the power component 332 is used for driving the first screw rod 331 to rotate, the first screw rod nut 333 is matchedly sleeved on the first screw rod 331, the transmission member 334 is used for pushing the piston 322, and the transmission member 334 is connected with the first screw rod nut 333. In use, the power component 332 works, drives the first screw rod 331 to rotate in the positive direction, so as to drive the first screw rod nut 333 to move, and drives the piston 322 to move through the transmission member 334, so as to push the printing material in the barrel 320 towards the discharging pipe 321 through the piston 322, so that the printing material can be sprayed out of the discharging pipe 321 and on the light-transmitting coating component 600, thereby realizing discharging.

[0061] Preferably, the power component 332 comprises a second driving motor, and the output shaft of the second driving motor is connected with the first screw rod 331. By adopting the second driving motor as the power component 332, the connection is convenient.

[0062] The rack 310 is provided with a first bearing seat 311 and a second bearing seat 312; the first screw rod 331 is rotatably installed on the first bearing seat 311 and the second bearing seat 312, so that the support of the first screw rod 331 is improved through the first bearing seat 311 and the second bearing seat 312.

[0063] Preferably, the transmission member 334 is connected with the first screw rod nut 333 through a connecting member 335, so as to facilitate the connection between the transmission member 334 and the first screw rod nut 333.

[0064] The piston 322 is provided with a protruding part 323, and the protruding part 323 is provided with an embedded groove 324 for embedding an end of the transmission member 334 away from the first screw rod nut 333. Through the embedded groove 324 provided on the protruding part 323 and embedding the end of the transmission member 334 away from the first screw rod nut 333 in the embedded groove 324, the stability of the pushing piston 322 is improved.

[0065] Preferably, the end of the transmission member 334 away from the first screw rod nut 333 is detachably connected with the protruding part 323. Through embedding the end of the transmission member 334 away from the first screw rod nut 333 in the embedded groove 324 and detachably connecting the end of the transmission member 334 away from the first screw rod nut 333 with the protruding part 323, the separation between the piston 322 and the piston pushing device 330 is realized, and the stability of the pushing piston 322 is further improved.

[0066] In the embodiment, the end of the transmission member 334 away from the first screw rod nut 333 is connected with the protruding part 323 through a screw, of course, in addition to this, the end of the transmission member 334 away from the first screw rod nut 333 can also be connected with the protruding part 323 through a bolt and the like, as long as the end of the transmission member 334 away from the first screw rod nut 333 can be detachably connected with the protruding part 323.

[0067] The rack 310 is provided with a guide groove 313, and the transmission member 334 comprises an anti-bending chain; the anti-bending chain is located in the guide groove 313 and moves along the guide groove 313. Specifically, the guide groove 313 comprises a first straight groove section 314, a circular-arc groove section 315 and a second straight groove section 316; the first straight groove section 314 is opposite to the second straight groove section 316, and the first straight groove section 314 is communicated with the second straight groove section 316 through the circular-arc groove section 315. During the movement of the first screw nut 333 along the axial direction of the first screw rod 331 driven by the power component 332, the anti-bending chain moves along the guide groove 313 driven by the first screw nut 333 to push the piston 322, so as to guide the anti-bending chain through the guide groove 313. By providing the guide groove 313 on the rack 310 and adopting the anti-bending chain as the transmission member 334, the piston 322 can be pushed to move, and the volume of the feeding device can be reduced.

[0068] Of course, in addition to this, the transmission member 334 can also adopt a transmission rod or a pushing frame, as long as the piston 322 can be pushed. However, the anti-bending chain is adopted as the transmission member 334, which is the most preferred embodiment of the utility model, and the piston 322 can be pushed to move, and the volume of the feeding device can be reduced.

[0069] The rack 310 is provided with a mounting groove 317 for accommodating the feeding cylinder 320, and the rack 310 is detachably connected with a resisting member 318 for resisting the feeding cylinder 320. In this embodiment, the resisting member 318 is fixed on the rack 310 by screws. During the disassembly of the feeding cylinder 320 and the rack 310, the resisting member 318 is only needed to be detached from the rack 310, and then the feeding cylinder 320 can be removed from the mounting groove 317 of the rack 310, so as to complete the disassembly of the feeding cylinder 320 and the rack 310.

[0070] Of course, in addition to this, other structures can also be adopted, as long as the feeding cylinder 320 can be detachably connected to the rack 310, for example, a pull-out box can be pullably mounted on the rack 310, and an accommodation cavity for accommodating the feeding cylinder 320 is arranged in the pull-out box, or a built-in cavity for accommodating the feeding cylinder 320 is arranged on the rack 310, and a buckle is arranged at the opening of the built-in cavity (so that the feeding cylinder 320 can be conveniently put in and taken out through the opening of the buckle, and the feeding cylinder 320 can be locked in the accommodation cavity through the buckling of the buckle), and the like. However, by providing the mounting groove 317 for accommodating the feeding cylinder 320 on the rack 310, and detachably connecting the resisting member 318 to the rack 310, the feeding cylinder 320 can be detachably connected to the rack 310, and the disassembly of the feeding cylinder 320 and the rack 310 can be facilitated.

[0071] Preferably, the translation driving device 400 comprises a support frame 410, a second screw rod 411, a translation screw rod driving device 412, and a second screw rod nut 413; the translation screw rod driving device 412 is used to drive the second screw rod 411 to rotate; the second screw rod nut 413 is matchedly sleeved on the second screw rod 411; the translation base 110 is movably installed on the support frame 410, and the translation base 110 is connected with the second screw rod nut 413. In use, the translation screw rod driving device 412 works to drive the second screw rod 411 to rotate, so as to drive the second screw rod nut 413 to move, thereby driving the translation base 110 to translate.

[0072] Preferably, the second screw rod 411 is rotatably installed on the support frame 410, and the translation screw rod driving device 412 can adopt a motor, or a motor and a transmission belt assembly, or a rotary cylinder, or a motor and a gear assembly, etc., as long as it can drive the second screw rod 411 to rotate. The support frame 410 is provided with a guide rail 415, and the translation base 110 is provided with a sliding block 416 which is slidingly matched with the guide rail 415, so as to improve the stability of the movement of the translation base 110.

[0073] Of course, in addition to the above, the translation driving device 400 can also adopt a cylinder, an oil cylinder, etc., as long as it can drive the translation base 110 to translate, but the combination of the support frame 410, the second screw rod 411, the translation screw rod driving device 412, and the second screw rod nut 413 is the most preferred embodiment of the utility model, which can improve the stability of the translation of the translation base 110.

[0074] In the embodiment, the light curing device 620 comprises a laser. Of course, in addition to the above, the light curing device 620 can also adopt a UV lamp tube, etc., as long as it can be used to emit light to the printing material to cure the printing material irradiated by the light.

[0075] Preferably, the lifting device 601 comprises a third screw rod 611, a lifting screw rod driving device 612, and a third screw rod nut 613; the lifting screw rod driving device 612 is used to drive the third screw rod 611 to rotate; the third screw rod nut 613 is matchedly sleeved on the third screw rod 611; the printing workbench 616 is movably installed on the support frame 410, and the printing workbench 616 is connected with the third screw rod nut 613. In use, the lifting screw rod driving device 612 works to drive the third screw rod 611 to rotate, so as to drive the third screw rod nut 613 to move together with the printing workbench 616 along the third screw rod 611.

[0076] Preferably, the third screw rod 611 is rotatably mounted on the support frame 410, and the lifting screw rod driving device 612 can adopt a motor, or a motor and a transmission belt assembly, or a rotary cylinder, or a motor and a gear assembly, etc., as long as it can drive the third screw rod 611 to rotate.

[0077] Preferably, the support frame 410 is provided with a guide rod 614, and the printing workbench 616 is provided with a sliding sleeve 615 which is arranged on the guide rod 614 in a lifting manner, so as to improve the stability of the lifting of the printing workbench 616.

[0078] Of course, in addition to the above, the lifting device 601 can also adopt a cylinder, an oil cylinder, etc., as long as it can drive the printing workbench 616 to lift, but the combination of the third screw rod 611, the lifting screw rod driving device 612 and the third screw rod nut 613 is the most preferred embodiment of the utility model, which can improve the stability of the lifting of the printing workbench 616.

[0079] The actual working process of the utility model is as follows: the power roller 210 is driven to rotate by the rotary driving device 220, the light-transmitting coating component 600 is driven under the driving of the power roller 210, and each part of the light-transmitting coating component 600 presents a downward narrowing movement trend in the process from the first tensioning roller 132 to the flattening component 500 through one of the guide rollers 230, the printing material can be pressed and flattened at the working area 617, and the thickness of the material can be determined by the cooperation of the flattening component 500 and the working area 617, so as to realize material laying, and the light-cured device 620 emits light to the printing material coated on the working area 617, so that the printing material irradiated by the light is cured and formed into a material layer, so as to realize light curing, with the continuous driving of the light-transmitting coating component 600, and with the movement trend of each part of the light-transmitting coating component 600 from the flattening component 500 to the second tensioning roller 142 through the other guide roller 230, the material layer is gradually separated from the cured and formed material layer, and demolding is realized; after the material layer is cured and formed, the light-transmitting coating component 600 is separated from the material layer and demolded, the lifting device 601 drives the printing workbench 616 to descend, the translation driving device 400 drives the translation seat 110 to move right to the starting point, then drives the translation seat 110 to move left, and drives the power roller 210 to rotate by the rotary driving device 220, the light-transmitting coating component 600 is driven to transmit under the driving of the power roller 210 and coats the printing material on the aforementioned material layer in a tensioning state, the light-cured device 620 emits light to the printing material coated on the aforementioned material layer, so that the printing material irradiated by the light is cured and formed into a next material layer, and then the above-mentioned mode is continuously worked to make the printing product in a layer-by-layer printing and forming mode.

[0080] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A 3D printing device, characterized by: The printing device comprises a translation driving device, a translation seat, a power roller, a rotation driving device, a flattening component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device, an adjusting device, a light curing device, a printing workbench and a lifting device; the printing workbench is provided with a working area; the lifting device is used to drive the printing workbench to lift; the feeding device is installed on the translation seat and is used to feed printing material towards the light-transmitting coating component; the translation driving device is used to drive the translation seat to translate; the power roller is rotatably installed on the translation seat; the rotation driving device is installed on the translation seat and is used to drive the power roller to rotate; the first tensioning frame is hinged on the translation seat and comprises a first tensioning roller; the second tensioning frame is hinged on the translation seat and comprises a second tensioning roller; the adjusting device is installed on the translation seat and is used to adjust the distance between the first tensioning roller and the second tensioning roller; the light-transmitting coating component is in the form of a ring and is sleeved on the power roller, the first tensioning roller, the second tensioning roller and the flattening component; the light-transmitting coating component is used to coat printing material at the working area; the light curing device is used to emit light towards the printing material to cure the printing material irradiated by the light; the flattening component is installed at the lower end of the translation seat and comprises a light-transmitting part; the lower end of the light-transmitting part is provided with a guide surface for the light-transmitting coating component to pass through.

2. The 3D printing device of claim 1, wherein: The first tensioning roller and the second tensioning roller are separately arranged on the two sides of the translation seat.

3. The 3D printing device of claim 1 or 2, wherein: The guide surface is a plane; the plane formed by the central axes of the first tensioning roller and the second tensioning roller is a tensioning reference plane; the power roller is located above the tensioning reference plane; and the guide surface is located below the tensioning reference plane.

4. The 3D printing device of claim 1, wherein: The adjusting device comprises a rotating body, a pawl, an elastic component and an elastic reset element; the rotating body comprises an axle, a transmission gear and a ratchet wheel; the axle is rotatably installed on the translation seat; the transmission gear and the ratchet wheel are fixed on the axle respectively; the elastic reset element is arranged between the rotating body and the translation seat; the first tensioning frame is provided with a first tooth pattern and is engaged with the transmission gear; the second tensioning frame is provided with a second tooth pattern and is engaged with the first tensioning frame; the pawl is hinged on the translation seat; the elastic component is arranged between the pawl and the translation seat; the pawl is used to be buckled into the tooth groove of the ratchet wheel; and the elastic component is used to provide an elastic force to facilitate the pawl to be buckled into the tooth groove of the ratchet wheel.

5. The 3D printing device of claim 4, wherein: The elastic reset element is used to provide an elastic force to facilitate the axle to rotate and reset to a working position; when the axle is at the working position, the distance between the first tensioning roller and the second tensioning roller is the largest.

6. The 3D printing device of claim 4 or 5, characterized in that: The elastic reset element comprises a coil spring installed in the translation seat; one end of the coil spring is connected with the axle and the other end is connected with the translation seat.

7. The 3D printing device of claim 4, wherein: The first tensioning frame further comprises a first toothed plate; the first toothed plate is hinged on the translation seat, and the first tensioning roller is rotatably installed on the first toothed plate; the first toothed plate is provided with the first tooth trace, and the first toothed plate is engaged with the transmission gear; the second tensioning frame further comprises a second toothed plate; the second toothed plate is hinged on the translation seat, and the second tensioning roller is rotatably installed on the second toothed plate; the second toothed plate is provided with the second tooth trace, and the second toothed plate is engaged with the first toothed plate.

8. The 3D printing device of claim 7, wherein: Both ends of the wheel shaft are fixed with a transmission gear; the first tensioning frame comprises two first toothed plates; the two first toothed plates are respectively hinged on the translation seat, and the first tensioning roller is rotatably installed between the two first toothed plates; the two first toothed plates correspond to the transmission gears at both ends of the wheel shaft respectively, and each first toothed plate is engaged with the corresponding transmission gear; the second tensioning frame comprises two second toothed plates; the two second toothed plates are respectively hinged on the translation seat, and the second tensioning roller is rotatably installed between the two second toothed plates; the two second toothed plates correspond to the two first toothed plates respectively, and each first toothed plate is engaged with the corresponding second toothed plate.

9. The 3D printing device of claim 1, wherein: In the transmission direction of the light-transmitting coating component, the flattening component is located between the first tensioning roller and the second tensioning roller; the 3D printing equipment comprises two power rollers; the two power rollers are respectively rotatably installed on the translation seat; the rotary driving device is used for driving the two power rollers to rotate; the light-transmitting coating component passes through the two power rollers.

10. The 3D printing device of claim 1, wherein: The 3D printing equipment further comprises a guide roller, the guide roller is rotatably installed on the translation seat, and the light-transmitting coating component further passes through the guide roller.

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