Coating device of 3D printing equipment

Abstract

The utility model discloses a coating device of 3D printing equipment. The coating device comprises a translation driving device, a translation seat, a power roller, a rotary driving device, a paving part, a first tensioning frame, a second tensioning frame, a light-transmitting coating part, a feeding device and an adjusting device, the translation driving device is used for driving the translation seat to translate; the power roller is rotatably mounted on the translation seat; the rotary driving device is mounted on the translation seat and is used for driving the power roller to rotate; the first tensioning frame is hinged to the translation seat, and the first tensioning frame comprises a first tensioning roller; the second tensioning frame is hinged to the translation seat, and the second tensioning frame comprises a second tensioning roller; and the adjusting device is mounted on the translation seat. According to the utility model, the light-transmitting coating component is used for coating in a tensioning state, and the printing material can be flatly coated by the light-transmitting coating component through the guide of the flattening component, so that the coating effect can be obviously improved, and the printing effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of coating devices 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 The favor. In 3D printing process, generally need to be first fed by feeding device and be loaded on the light transmission coating component, then the transmission of light transmission coating component is used to coat printing material. But the coating effect of existing coating device is poor, which can easily affect the printing effect, and it is not convenient to replace the 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 coating device of 3D printing equipment, which can improve the 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 coating device of 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 and adjusting device;The translation drive device is used to drive translation seat translation;The power roller is rotatably mounted on translation seat;The rotary drive device is installed on translation seat, and is used to drive power roller rotation;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 the 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 flatten component is installed on translation seat;The light transmission coating component is in the form of sleeve ring, and light transmission coating component is around power roller, first tensioning roller, second tensioning roller and flatten component;The feeding device is installed on translation seat, and feeding device is used to supply printing material to light transmission coating component.

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

[0007] The lower end of the flatten component is provided with guide plane for the light transmission coating component to pass through;The plane formed by the center axis of the first tensioning roller and the center axis of the second tensioning roller is formed as tensioning reference plane, the power roller is located above the tensioning reference plane, and the guide plane is located below the tensioning 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 tensioning frame is provided with a first tooth pattern, and the first tensioning frame is engaged with the transmission gear; the second tensioning frame is provided with a second tooth pattern, and the second tensioning frame is engaged with the first tensioning 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 buckling into the tooth groove of the ratchet wheel; the elastic component is used for providing the elastic force for promoting the pawl to buckle into the tooth groove of the ratchet wheel.

[0009] The elastic reset element is used for providing the elastic force for promoting the axle to rotate and reset to the working position; when the axle is in the working position, the distance between the first tensioning roller and the second tensioning roller 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 tensioning frame further comprises a first tooth plate; the first tooth plate is hinged on the translation seat, and the first tensioning roller is rotatably mounted on the first tooth plate; the first tooth plate is provided with the first tooth pattern, and the first tooth plate is engaged with the transmission gear; the second tensioning frame further comprises a second tooth plate; the second tooth plate is hinged on the translation seat, and the second tensioning roller is rotatably mounted on the second tooth plate; the second tooth plate is provided with the second tooth pattern, and the second tooth plate is engaged with the first tooth plate.

[0012] Both ends of the axle are fixed with a transmission gear; the first tensioning frame comprises two first tooth plates; the two first tooth plates are hinged on the translation seat respectively, and the first tensioning 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 is engaged with the corresponding transmission gear; the second tensioning frame comprises two second tooth plates; the two second tooth plates are hinged on the translation seat respectively, and the second tensioning 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 is engaged with the corresponding second tooth plate.

[0013] 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 coating device of the 3D printing equipment comprises two power rollers; the two power rollers are rotatably mounted on the translation seat respectively; 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.

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

[0015] Compared with the prior art, the 3D printing equipment has the advantages that:

[0016] The coating device of the 3D printing equipment 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 and an adjusting device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of the 3D printing equipment of the utility model;

[0018] Figure 2 Fig. 2 is an exploded view of the 3D printing equipment of the utility model;

[0019] Figure 3 Fig. 3 is a sectional view of the 3D printing equipment of the utility model;

[0020] Figure 4 Fig. 4 is a structural schematic diagram of the translation seat and the adjusting device;

[0021] Figure 5 Fig. 5 is a schematic diagram of the translation seat and the adjusting device in a split state;

[0022] Figure 6 Fig. 6 is another schematic diagram of the translation seat and the adjusting device in a split state;

[0023] Figure 7 Fig. 7 is a structural schematic diagram of the feeding device;

[0024] Figure 8 Fig. 8 is an exploded schematic diagram of the feeding device;

[0025] Figure 9 Fig. 9 is an exploded schematic diagram of the piston pushing device;

[0026] Wherein, 100, adjusting device; 110, translation seat; 120, rotating body; 121, wheel shaft; 122, transmission gear; 123, ratchet wheel; 130, first tension frame; 131, first toothed plate; 132, first tension roller; 133, first tooth trace; 140, second tension frame; 141, second toothed plate; 142, second tension roller; 143, second tooth trace; 151, ratchet pawl; 160, elastic reset 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 section; 315, circular arc groove section; 316, second straight groove section; 317, mounting groove; 318, stopper; 320, material cylinder; 321, discharge pipe; 322, piston; 323, convex part; 324, built-in groove; 330, piston pushing device; 331, first lead screw; 332, power component; 333, first lead screw nut; 334, transmission piece; 335, connecting piece; 400, translation drive device; 410, support frame; 411, second lead screw; 412, lead screw drive device; 413, second lead screw nut; 415, guide rail; 416, sliding block; 500, flattening component; 510, flattening seat; 520, light-transmitting block; 521, guide plane; 600, light-transmitting coating component. DETAILED DESCRIPTION

[0027] The utility model will be described further in combination with the drawings and specific implementation, it is explained that, under the premise of not conflicting, the following described each embodiment or each technical feature between can be combined to form new embodiment.

[0028] As Figures 1-9As shown, a coating device of a 3D printing device comprises 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 and an adjusting device 100; the translation driving device 400 is used to drive the translation of the translation seat 110; 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 rotation of the power roller 210; 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 flattening component 500 is installed on the translation seat 110; the light-transmitting coating component 600 is in the form of a ring, and the light-transmitting coating component 600 passes through the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the flattening component 500; the feeding device 200 is installed on the translation seat 110, and the feeding device 200 is used to feed printing material towards the light-transmitting coating component 600.

[0029] 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 component 600 on the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening component 500 is in a tension state with the increase of the distance between the first tension roller 132 and the second tension roller 142, then the translational driving device 400 is used to drive the translational seat 110 to translate, the power roller 210 is driven to rotate by the rotational driving device 220, the light-transmitting coating component 600 is driven by the power roller 210 and is coated in a tension state, and in the driving process of the light-transmitting coating component 600, the light-transmitting coating component 600 can coat the printing material flat under the guidance of the flattening component 500, so as to improve the coating effect and further improve the printing effect. Thus, the coating device of the 3D printing equipment provided by the utility model can adjust the distance between the first tension roller 132 and the second tension roller 142 by the adjusting device 100, so that the light-transmitting coating component 600 is in a tension state, the light-transmitting coating component 600 can be prevented from loosening in the coating process of the light-transmitting coating component 600, the light-transmitting coating component 600 is coated in a tension state, the coating effect is improved, the light-transmitting coating component 600 can coat the printing material flat under the guidance of the flattening component 500, the coating effect is improved, and the printing effect is improved. In addition, if the light-transmitting coating component 600 needs to be replaced, the distance between the first tension roller 132 and the second tension roller 142 is reduced by the adjusting device 100, so that the light-transmitting coating component 600 on the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening component 500 is in a slack state with the reduction of the distance between the first tension roller 132 and the second tension roller 142, at this time, the light-transmitting coating component 600 can be removed, then a new light-transmitting coating component 600 is sleeved 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 is convenient to replace.

[0030] As a preferred embodiment of the present application, the printing material can be viscous material, so as to improve the printing effect.

[0031] Preferably, the light-transmissive coating member 600 can adopt a coating film or the like as long as it can be used for coating. Among them, the light-transmissive coating member 600 is in the form of a ring, that is, at least one section of the light-transmissive coating member 600 is in the form of a loop and can be wound around the power roller 210, the first tension roller 132, the second tension roller 142 and the flattening member 500. For example, the two ends of the light-transmissive coating member 600 can be integrally formed or fixed together.

[0032] The rotation 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. 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 first driving motor 221 drives the driving pulley 222 to rotate, so as to drive the driven pulley 223 and the power roller 210 to rotate through the transmission belt 224.

[0033] Preferably, the coating device of the 3D printing equipment comprises two power rollers 210, which are respectively rotatably installed on the translation seat 110. The rotation driving device 220 is used to drive the two power rollers 210 to rotate. The light-transmissive coating member 600 is wound around the two power rollers 210. By driving the light-transmissive coating member 600 through the two power rollers 210, the power of the transmission of the light-transmissive coating member 600 can be increased, and the stability of the transmission of the light-transmissive coating member 600 can be improved.

[0034] Specifically, the two power rollers 210 are respectively fixed with a driven pulley 223. The transmission belt 224 is wound around the driven pulleys 223 of the two power rollers 210.

[0035] 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 operator manually or by the external rotating driving device 220, the ratchet wheel 123 and the transmission gear 122 positively rotate with the axle 121, the first tensioning frame 130 swings under the driving action of the transmission gear 122, the second tensioning frame 140 swings 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 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 buckles into the corresponding tooth groove of the ratchet wheel 123, thereby the locking function is realized, the first tensioning frame 130 and the second tensioning frame 140 are kept in 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 swings to reset under the driving action of the transmission gear 122, and the second tensioning frame 140 swings to reset 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 convenient and quick, the tightness adjustment time can be saved, and the adjustment efficiency is improved.

[0036] 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 pulled to separate the pawl 151 from the ratchet wheel 123, 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 the convenience of operation is improved, and the cost is reduced.

[0037] Of course, the elastic component can also be any elastic component available on the market, such as an elastic strip, etc.

[0038] 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.

[0039] 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.

[0040] 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, 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 around 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 in the forward direction with the wheel shaft 121, the first tension frame 130 swings under the driving action of the transmission gear 122, 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 rotates 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 remain 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 to buckle the pawl 151 into the tooth groove of the ratchet wheel 123 under the elastic force of the elastic member, so that the light-transmitting coating member 600 wound around the power roller 210, the flattening member 500, the first tension roller 132 and the second tension roller 142 is 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 remains in the working position under the elastic force of the coil spring, and the first tension roller 132 and the second tension roller 142 remain in the position with the largest distance therebetween during the transmission and coating process of the light-transmitting coating member 600 driven by the power roller 210, thereby making the light-transmitting coating member 600 continuously 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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 transmission 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 transmission coating component 600, so as to reduce the friction. During the rotation 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.

[0045] 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.

[0046] 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.

[0047] 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. By adopting the above arrangement, the stability of the swing of the first tensioning frame 130 and the second tensioning frame 140 can be improved.

[0048] 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.

[0049] The coating device of the 3D printing equipment further includes a guide roller 230, the guide roller 230 is rotatably mounted on the translation seat 110, and the light-transmitting coating member 600 also passes through the guide roller 230, so that the guide roller 230 can guide the light-transmitting coating member 600.

[0050] Preferably, the coating device of the 3D printing equipment further comprises two guide rollers 230, and the light-transmitting coating component 600 further passes through 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.

[0051] 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.

[0052] The lower end of the flattening component 500 is provided with a guide plane 521 for the light-transmitting coating component 600 to pass through, so that the printing material can be evenly coated on the workbench under the guidance of the guide plane 521 during the transmission of the light-transmitting coating component 600.

[0053] In the embodiment, the first tension roller 132 and the second tension roller 142 are respectively arranged 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 central axis of the first tension roller 132 and the central axis of the second tension roller 142 forms a tension reference plane, the power roller 210 can be located above the tension reference plane, and the guide plane 521 can be located below the tension reference plane. During the transmission of the light-transmitting coating component 600, each part of the light-transmitting coating component 600 has a downward narrowing movement trend from the first tension roller 132 to the flattening component 500 through one of the guide rollers 230, so as to flatten, compact and flatten the printing material, thereby realizing material laying and separating from the material cured by laser irradiation and demolding. Through the above structure, the printing material can be evenly coated by the light-transmitting coating component 600, the light-transmitting coating component 600 can be separated from the printing material to realize demolding, the demolding force can be greatly reduced, and the influence of the demolding force on the printing part can be reduced.

[0054] Preferably, the flattening component 500 comprises a flattening seat 510 and a light-transmitting block 520, the flattening seat 510 is provided with a matching groove, the light-transmitting block 520 is arranged in the matching groove, and the guide plane 521 is arranged on the lower end of the light-transmitting block 520. Through the above arrangement, the printing material can be evenly coated by the light-transmitting coating component 600 guided by the flattening component 500, and the manufacturing process is facilitated, and the manufacturing cost is reduced.

[0055] The feeding device 200 comprises a rack 310, a barrel 320 and a piston pushing device 330, which are installed on the translation base 110; the barrel 320 is detachably fixed on the rack 310; the barrel 320 is provided with a discharge pipe 321; the discharge pipe 321 is used for discharging towards the light-transmitting coating component 600; the piston 322 is movably installed inside the barrel 320; the piston pushing device 330 is used for pushing the piston 322 to move along the inside of 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 inside of the barrel 320, and the printing material in the barrel 320 is sprayed out of the discharge pipe 321 and discharged onto the light-transmitting coating component 600 under the pushing action of the piston 322, so as to supply the printing material to the light-transmitting coating component 600.

[0056] Of course, in addition to this, the feeding device 200 can also adopt a nozzle device, a roller coating device, etc., as long as it can be used to supply 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 discharge can be realized by pushing the piston 322 with 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 as to facilitate the disassembly of the barrel 320 and the replacement of the barrel 320.

[0057] The piston pushing device 330 comprises a first lead screw 331, a power component 332, a first lead screw nut 333 and a transmission member 334; the power component 332 is used for driving the first lead screw 331 to rotate; the first lead screw nut 333 is matchedly sleeved on the first lead screw 331; the transmission member 334 is used for pushing the piston 322, and the transmission member 334 is connected with the first lead screw nut 333. In use, the power component 332 works, drives the first lead screw 331 to rotate forward, so as to move the first lead screw nut 333, 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 direction of the discharge pipe 321 through the piston 322, so that the printing material can be sprayed out of the discharge pipe 321 and onto the light-transmitting coating component 600, thereby realizing the discharge.

[0058] Preferably, the power component 332 comprises a second driving motor. Specifically, the output shaft of the second driving motor is connected with the first lead screw 331. By adopting the second driving motor for the power component 332, the connection can be facilitated.

[0059] 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 to the first screw rod 331 can be improved through the first bearing seat 311 and the second bearing seat 312.

[0060] 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.

[0061] 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 can be improved.

[0062] 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 can be realized, and the stability of the pushing piston 322 can be further improved.

[0063] 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.

[0064] The material 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 material 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.

[0065] 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.

[0066] The material rack 310 is provided with a mounting groove 317 for accommodating the feeding cylinder 320, and the material 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 material rack 310 through screws. During the disassembly of the feeding cylinder 320 and the material rack 310, the resisting member 318 is only needed to be detached from the material rack 310, and then the feeding cylinder 320 can be removed from the mounting groove 317 of the material rack 310, so as to complete the disassembly of the feeding cylinder 320 and the material rack 310.

[0067] 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 material rack 310, for example, a pull-out box can be pullably mounted on the material 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 material 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 material rack 310, and detachably connecting the resisting member 318 to the material rack 310, the feeding cylinder 320 can be detachably connected to the material rack 310, and the disassembly of the feeding cylinder 320 and the material rack 310 can be facilitated.

[0068] Preferably, the translation driving device 400 comprises a support frame 410, a second screw rod 411, a screw rod driving device 412, and a second screw rod nut 413; the 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 seat 110 is movably installed on the support frame 410, and the translation seat 110 is connected with the second screw rod nut 413. In use, the 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, and drive the translation seat 110 to translate.

[0069] Preferably, the second screw rod 411 is rotatably installed on the support frame 410, the 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 seat 110 is provided with a sliding block 416 which is slidably matched with the guide rail 415, so as to improve the stability of the movement of the translation seat 110.

[0070] Of course, in addition thereto, the translation driving device 400 can also adopt a cylinder, an oil cylinder, etc., as long as it can drive the translation seat 110 to translate, but the combination of the support frame 410, the second screw rod 411, the screw rod driving device 412, the second screw rod nut 413 and the translation seat 110 is the most preferred embodiment of the utility model, which can improve the stability of the translation of the translation seat 110.

[0071] The above-mentioned embodiments are only the preferred embodiments of the utility model, and cannot be used to limit the scope of protection of the utility model, and any non-substantial changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A coating device of a 3D printing apparatus, characterized by: The 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 and an adjusting device; the translation driving device is used to drive the translation of the translation seat; the power roller is rotatably installed on the translation seat; the rotation driving device is installed on the translation seat and used to drive the rotation of the power roller; 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 used to adjust the distance between the first tensioning roller and the second tensioning roller; the flattening component is installed on the translation seat; the light-transmitting coating component is in the form of a ring and passes through the power roller, the first tensioning roller, the second tensioning roller and the flattening component; the feeding device is installed on the translation seat and used to feed printing material towards the light-transmitting coating component.

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

3. The coater of a 3D printing apparatus according to claim 1 or 2, characterized in that: The lower end of the flattening component is provided with a guide plane for the light-transmitting coating component to pass through; 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 plane is located below the tensioning reference plane. 4.The coating device of the 3D printing apparatus 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 engages with the transmission gear; the second tensioning frame is provided with a second tooth pattern and engages 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; 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 coating device of the 3D printing apparatus according to claim 4, wherein: The elastic reset element is used to provide an elastic force to facilitate the axle to rotate back to a working position; when the axle is in the working position, the distance between the first tensioning roller and the second tensioning roller is the largest.

6. The coater of a 3D printing apparatus according to 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 coating device of the 3D printing apparatus of claim 4, wherein: The first tensioning frame further comprises a first tooth plate; the first tooth plate is hinged on the translation seat and the first tensioning roller is rotatably installed on the first tooth plate; the first tooth plate is provided with the first tooth pattern and engages with the transmission gear; the second tensioning frame further comprises a second tooth plate; the second tooth plate is hinged on the translation seat and the second tensioning roller is rotatably installed on the second tooth plate; the second tooth plate is provided with the second tooth pattern and engages with the first tooth plate.

8. The coater of the 3D printing apparatus of claim 7, wherein: Both ends of the axle are fixed with a transmission gear; the first tensioning frame includes 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 and the transmission gears at both ends of the axle are respectively one-to-one corresponding, and each first toothed plate is engaged with the corresponding transmission gear; the second tensioning frame includes 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 and the two first toothed plates are respectively one-to-one corresponding, and each first toothed plate is engaged with the corresponding second toothed plate. 9.The coating device of the 3D printing apparatus 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 coating device of the 3D printing equipment includes 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 coating device of the 3D printing apparatus of claim 1, wherein: The coating device of the 3D printing equipment further includes 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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