A coating device for 3D printing equipment

Abstract

The present invention discloses a coating device of a 3D printing device, comprising a translation drive device, a translation seat, a power roller, a rotation drive 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 drive device is used to drive the translation seat to translate; the power roller is rotatably mounted on the translation seat; the rotation drive device is mounted 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 the first tensioning frame includes a first tensioning roller; the second tensioning frame is hinged on the translation seat, and the second tensioning frame includes a second tensioning roller; the adjusting device is mounted on the translation seat. The present invention enables the light-transmitting coating component to be coated in a tensioned state, and through the guidance of the flattening component, the light-transmitting coating component can coat the printing material evenly, so as to significantly improve the coating effect, thereby improving the printing effect.

Description

Technical Field

[0001] The invention relates to a coating device for 3D printing equipment. Background Art

[0002] 3D printing technology is a rapid prototyping process that can quickly shape and manufacture objects through layer-by-layer printing. It has the advantages of shortening product development cycle and saving production costs, and is favored by many industries. In the 3D printing process, it is generally necessary to first feed the printing material onto the light-transmitting coating component through a feeding device, and then coat the printing material with the help of the transmission of the light-transmitting coating component. However, the coating effect of the existing coating device is poor, which is easy to affect the printing effect. Moreover, it is not convenient to replace the light-transmitting coating component, which is far from meeting the industry requirements. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a coating device for a 3D printing device, which can improve the coating effect and facilitate the replacement of light-transmitting coating components.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A coating device for a 3D printing device, comprising a translation drive device, a translation seat, a power roller, a rotation drive device, a paving component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device and an adjusting device; the translation drive device is used to drive the translation seat to translate; the power roller is rotatably mounted on the translation seat; the rotation drive device is mounted 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 the first tensioning frame includes a first tensioning roller; the second tensioning frame is hinged on the translation seat, and the second tensioning frame includes a second tensioning roller; the adjusting device The device is installed on the translation seat, and the adjustment device is 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 a ring shape, and the light-transmitting coating component is wound around 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 the feeding device is used to supply printing material toward the light-transmitting coating component; the flattening component includes a flattening seat and a light-transmitting block; the flattening seat is provided with a matching groove, and the light-transmitting block is embedded in the matching groove; the lower end of the light-transmitting block is provided with a guide plane for the light-transmitting coating component to pass around.

[0006] The rotary drive device comprises a first drive motor, a driving pulley, a driven pulley and a transmission belt; the first drive motor is used to drive the driving pulley to rotate, the driven pulley is fixed on the power roller, and the transmission belt is wound around the driving pulley and the driven pulley.

[0007] The body of the first driving motor is fixed on the translation seat.

[0008] The feeding device includes a barrel and a piston pushing device; a discharge pipe is provided on the barrel; the discharge pipe is used to discharge material toward the light-transmitting coating component, and a piston is movably installed inside the barrel; the piston pushing device is used to push the piston to move the piston along the inside of the barrel.

[0009] The feeding device also includes a material rack; the material rack is fixed on the translation seat; the piston pushing device includes a first screw, a power component, a first screw nut and a transmission component; the transmission component is movably installed on the material rack; the power component is used to drive the first screw to rotate; the first screw nut is matchedly sleeved on the first screw; the transmission component is used to push the piston, and the transmission component is connected to the first screw nut.

[0010] The material barrel is fixed on the material rack in a detachable manner.

[0011] The first tensioning roller and the second tensioning roller are respectively disposed on two sides of the translation seat.

[0012] A plane formed by the central axis of the first tensioning roller and the central axis of the second tensioning roller forms 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.

[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 includes two power rollers; the two power rollers are rotatably mounted on the translation seat respectively; the rotary drive device is used to drive the two power rollers to rotate; the light-transmitting coating component passes around the two power rollers.

[0014] The coating device of the 3D printing equipment also includes a guide roller, which is rotatably mounted on the translation seat, and the light-transmitting coating component also passes around the guide roller.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a coating device for 3D printing equipment. By adopting a combination of a translation drive device, a translation seat, a power roller, a rotation drive device, a paving component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device and an adjusting device, the spacing between the first tensioning roller and the second tensioning roller can be adjusted by means of the adjusting device, so that the light-transmitting coating component is in a tensioned state, so that the loosening phenomenon of the light-transmitting coating component can be reduced during the coating process of the light-transmitting coating component, so that the light-transmitting coating component is coated in a tensioned state, and on this basis, through the guidance of the paving component, the light-transmitting coating component can coat the printing material evenly, so as to significantly improve the coating effect, thereby improving the printing effect; moreover, it is also convenient to replace the light-transmitting coating component; in addition, by reasonably arranging the adjusting device, the tension adjustment operation is more convenient and quick, which can save the tension adjustment time and improve the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 An exploded view of the present invention;

[0019] Figure 3 is a cross-sectional view of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the translation seat and the adjustment device;

[0021] Figure 5 It is a schematic diagram of the disassembly state of the translation seat and the adjustment device;

[0022] Figure 6 It is a schematic diagram of another disassembled state of the translation seat and the adjustment device;

[0023] Figure 7 It is an exploded view of the feeding device;

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

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

[0026] Among them, 100, adjustment device; 110, translation seat; 120, rotating body; 121, wheel shaft; 122, transmission gear; 123, ratchet; 130, first tensioning frame; 131, first tooth plate; 132, first tensioning roller; 133, first tooth pattern; 140, second tensioning frame; 141, second tooth plate; 142, second tensioning roller; 143, second tooth pattern; 151, ratchet; 160, elastic reset element; 200, feeding device; 210, power roller; 220, rotation drive device; 221, first drive motor; 222, driving pulley; 223, driven pulley; 224, transmission belt; 230, guide roller; 310, material frame; 311, first bearing seat; 312, second bearing seat; 313, guide Groove; 314, first straight groove section; 315, arc groove section; 316, second straight groove section; 317, mounting groove; 318, stopper; 320, barrel; 321, discharge pipe; 322, piston; 323, convex portion; 324, built-in groove; 330, piston pushing device; 331, first screw rod; 332, power component; 333, first screw rod nut; 334, transmission component; 335, connecting member; 400, translation driving device; 410, support frame; 411, second screw rod; 412, screw driving device; 413, second screw rod nut; 415, guide rail; 416, slider; 500, paving component; 510, paving seat; 520, light-transmitting block; 521, guide plane; 600, light-transmitting coating component. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0028] like Figure 1-9As shown, a coating device of a 3D printing device includes a translation drive device 400, a translation seat 110, a power roller 210, a rotation drive device 220, a paving 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 drive device 400 is used to drive the translation seat 110 to translate; the power roller 210 is rotatably mounted on the translation seat 110; the rotation drive device 220 is mounted 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 includes a first tensioning roller 132; the second tensioning frame 140 is hinged on the translation seat 110, and the second tensioning frame 140 includes a second tensioning roller 142; the adjusting device 100 The adjustment device 100 is installed on the translation seat 110, and the adjustment 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 a ring shape, 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 supply printing material toward the light-transmitting coating component 600; the flattening component 500 includes a flattening seat 510 and a light-transmitting block 520; a matching groove is provided on the flattening seat 510, and the light-transmitting block 520 is embedded in the matching groove; the lower end of the light-transmitting block 520 is provided with a guide plane 521 for the light-transmitting coating component 600 to pass through.

[0029] When in use, the adjustment device 100 is used to increase the distance between the first tensioning roller 132 and the second tensioning roller 142, so that the light-transmitting coating component 600 passing through the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the flattening component 500 is in a tensioned state as the distance between the first tensioning roller 132 and the second tensioning roller 142 increases, and then the translation drive device 400 is used to drive the translation seat 110 to translate, and the power roller 210 is driven to rotate by the rotation drive device 220. The light-transmitting coating component 600 is driven by the power roller 210 and is coated in a tensioned state. Moreover, during the transmission process of the light-transmitting coating component 600, the light-transmitting coating component 600 can be guided by the guide plane 521 of the flattening component 500 to evenly coat the printing material, so as to improve the coating effect, thereby improving the printing effect. Therefore, the coating device of a 3D printing device provided by the present invention adopts a combination of a translation drive device 400, a translation seat 110, a power roller 210, a rotation drive device 220, a paving 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 adjusting device 100 can be used to adjust the distance between the first tensioning roller 132 and the second tensioning roller 142, so that the light-transmitting coating component 600 is in a tensioned state, so that the light-transmitting coating component 600 can be reduced from loosening during the coating process of the light-transmitting coating component 600, so that the light-transmitting coating component 600 is coated in a tensioned state, which can improve the coating effect. On this basis, the light-transmitting coating component is guided by the paving component 500 to 600 can coat the printing material evenly, so as to significantly improve the coating effect, and thus improve the printing effect; in addition, if it is necessary to replace the light-transmitting coating component 600, the adjustment device 100 can be used to reduce the distance between the first tensioning roller 132 and the second tensioning roller 142, so that the light-transmitting coating component 600 wound around the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the flattening component 500 can be in a relaxed state as the distance between the first tensioning roller 132 and the second tensioning roller 142 is reduced. At this time, the light-transmitting coating component 600 can be removed, and then the new light-transmitting coating component 600 can be wrapped around the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the flattening component 500, thereby facilitating the replacement of the light-transmitting coating component 600.

[0030] As a preferred embodiment of the present invention, the printing material may be a viscous material to improve the printing effect.

[0031] Preferably, the light-transmitting coating component 600 can be a coating film, etc., as long as it can be used for coating. The light-transmitting coating component 600 is in a ring shape, that is, at least one section of the extension track of the light-transmitting coating component 600 is in a loop shape and can be wrapped around the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the paving component 500. For example, the head and tail ends of the light-transmitting coating component 600 can be integrally formed or fixed together.

[0032] The rotary drive device 220 includes a first drive motor 221, a driving pulley 222, a driven pulley 223 and a transmission belt 224; the first drive 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 drive motor 221 is fixed on the translation seat 110. When in use, the first drive motor 221 drives the driving pulley 222 to rotate, so that the driven pulley 223 and the power roller 210 are driven to rotate through the transmission belt 224.

[0033] Preferably, the coating device of the 3D printing equipment includes two power rollers 210, which are rotatably mounted on the translation seat 110 respectively; the rotation drive device 220 is used to drive the two power rollers 210 to rotate; the light-transmitting coating component 600 passes around the two power rollers 210, and by utilizing the two power rollers 210 to drive the light-transmitting coating component 600 to transmit, the power of the light-transmitting coating component 600 transmission can be increased, and the stability of the transmission of the light-transmitting coating component 600 can be improved.

[0034] Specifically, a 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 .

[0035] The adjusting device 100 includes a rotating body 120, a ratchet 151, an elastic component and an elastic reset element 160; the rotating body 120 includes a wheel shaft 121, a transmission gear 122 and a ratchet 123; the wheel shaft 121 is rotatably mounted on the translation seat 110; the transmission gear 122 and the ratchet 123 are respectively fixed on the wheel shaft 121; 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 The first tensioning frame 130 is meshed with the transmission gear 122; the second tensioning frame 140 is provided with a second tooth pattern 143, and the second tensioning frame 140 is meshed 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 to buckle into the tooth groove of the ratchet 123; the elastic component is used to provide an elastic force to urge the pawl 151 to buckle into the tooth groove of the ratchet 123. When in use, the wheel shaft 121 is rotated forward manually by the operator or by the external rotation driving device 220, the ratchet 123 and the transmission gear 122 rotate forward with the wheel shaft 121, the first tensioning frame 130 swings under the driving action of the transmission gear 122, and the second tensioning frame 140 swings under the driving action of the first tensioning frame 130, and with the swing of the first tensioning frame 130 and the second tensioning frame 140, the distance between the first tensioning roller 132 and the second tensioning roller 142 can be adjusted, and after the wheel shaft 121 rotates to the right position, the pawl 151 is buckled into the corresponding tooth groove of the ratchet 123, so as to play a locking role, so that the first tensioning frame 130 and the second tensioning frame 140 remain in the corresponding position, and the pawl 151 is pulled to separate the pawl 151 from the ratchet 123, at this time, the wheel shaft 121 is elastically reset under the elastic force of the elastic reset element 160, The first tensioning frame 130 swings and resets under the driving action of the transmission gear 122, and the second tensioning frame 140 swings and resets under the driving action of the first tensioning frame 130. In this way, the distance between the first tensioning roller 132 and the second tensioning roller 142 can be flexibly and quickly adjusted, so that the tension adjustment operation of the light-transmitting coating component 600 wrapped around the first tensioning roller 132 and the second tensioning roller 142 is more convenient and quick, which can save the tension adjustment time and improve the adjustment efficiency.

[0036] The elastic component includes a spring, so that when the user pulls the pawl 151 to separate the pawl 151 from the ratchet 123, the axle 121 is elastically reset under the elastic force of the elastic reset element 160, and then the pawl 151 is released. The pawl 151 can be reset under the elastic force of the spring to snap into the tooth groove of the ratchet 123, thereby improving the convenience of operation and reducing costs.

[0037] Of course, the elastic component may be any elastic component currently available on the market, such as an elastic strip, in addition to the spring.

[0038] The elastic reset element 160 includes a coil spring. One end of the coil spring is connected to the axle 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 123, the axle 121 can be elastically reset under the elastic force of the coil spring. By using the coil spring as the elastic reset element 160, it can provide elastic force to the axle 121 and facilitate installation.

[0039] Of course, in addition to the coil spring, the elastic reset element 160 can also adopt any existing elastic reset element on the market, such as a torsion spring, etc., as long as it can play an elastic reset role.

[0040] Preferably, the elastic reset element 160 is used to provide an elastic force to cause the wheel shaft 121 to rotate and reset to the working position. When the wheel shaft 121 is in the working position, the distance between the first tensioning roller 132 and the second tensioning roller 142 is the largest, so that after the user pulls the pawl 151 to separate the pawl 151 from the ratchet 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 tensioning roller 132 and the second tensioning roller 142 is the largest, and the light-transmitting coating component 600 wound around the power roller 210, the paving component 500, the first tensioning roller 132 and the second tensioning roller 142 is in a tensioned state. If the light-transmitting coating needs to be replaced When the cloth component 600 is moved, the operator can manually rotate the axle 121 in the positive direction, and the axle 121 rotates from the working position to other positions. The ratchet 123 and the transmission gear 122 rotate in the positive direction with the axle 121. The first tensioning frame 130 swings under the driving action of the transmission gear 122, and the second tensioning frame 140 swings under the driving action of the first tensioning frame 130. With the swinging of the first tensioning frame 130 and the second tensioning frame 140, the distance between the first tensioning roller 132 and the second tensioning roller 142 can be reduced. After the axle 121 rotates to the right position, the ratchet 151 is buckled into the tooth groove of the ratchet 123 under the elastic force of the elastic component, thereby locking the first tensioning frame 130 and the second tensioning roller 142. The first tensioning frame 130 and the second tensioning frame 140 are kept in the corresponding positions, which is convenient for taking out the light-transmitting coating component 600 and updating the light-transmitting coating component 600. After the light-transmitting coating component 600 is replaced, it is only necessary to pull the pawl 151 to separate the pawl 151 from the ratchet 123. At this time, the axle 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 123 under the elastic force of the elastic component, so that the light-transmitting coating wound on the power roller 210, the paving component 500, the first tensioning roller 132 and the second tensioning roller 142 can be moved. Component 600 is in a tensioned state, which makes the tension adjustment operation more convenient and quick, saves tension adjustment time, and improves adjustment efficiency. Moreover, when the light-transmitting coating component 600 is driven by the power roller 210 and is coating, the axle 121 remains in the working position under the elastic force of the coil spring, and the first tensioning roller 132 and the second tensioning roller 142 are still at the position with the largest distance between them, so that the light-transmitting coating component 600 is continuously in a tensioned state during the coating process, which can improve the coating stability, so as to further reduce or even avoid the loosening of the light-transmitting coating component 600 during the coating process of the light-transmitting coating component 600, thereby further improving the coating effect.

[0041] In actual design, in order to facilitate identification of the working position of the wheel axle 121, a first identification point may be set on the wheel axle 121, and a second identification point may be set on the translation seat 110. When the wheel axle 121 is reset to the working position, the first identification point is opposite to the second identification point. If the wheel axle 121 is rotated from the working position to other positions, the first identification point and the second identification point are offset, thereby facilitating the user to identify the position of the wheel axle 121.

[0042] The translation seat 110 is provided with an installation cavity, and the coil spring is located in the installation cavity, which can facilitate the installation of the coil spring and prevent the coil spring from being exposed.

[0043] Preferably, a first embedding groove is provided on the wheel axle 121, a second embedding groove is provided on the translation seat 110, the inner end of the coil spring is fixed in the first embedding groove, and the outer end of the coil spring is fixed in the second embedding groove to facilitate installation.

[0044] The first tensioning frame 130 further includes a first tooth plate 131; the first tooth plate 131 is hinged on the translation seat 110, and the first tensioning roller 132 is rotatably mounted on the first tooth plate 131; the first tooth plate 131 is provided with the first tooth pattern 133, and the first tooth plate 131 is meshed with the transmission gear 122. The second tensioning frame 140 further includes a second tooth plate 141; the second tooth plate 141 is hinged on the translation seat 110, and the second tensioning roller 142 is rotatably mounted on the second tooth plate 141; the second tooth pattern 143 is provided on the second tooth plate 141, and the second tooth plate 141 is meshed with the first tooth 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 rotate relative to the first tooth plate 131 and the second tooth plate 141 respectively under the driving action of the light-transmitting coating component 600 to reduce friction. During the rotation of the axle 121, the ratchet 123 and the transmission gear 122 rotate with the axle 121, and the first tooth 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 tooth plate 131 along with the first tooth plate 131, and the second tooth 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 tooth plate 141 along with the second tooth plate 141, thereby adjusting the positions of the first tensioning roller 132 and the second tensioning roller 142.

[0045] In this embodiment, the first tooth plate 131 is hinged to the translation seat 110 through a first pin shaft, a first through hole is provided on the first tooth plate 131, a first mounting hole is provided on the translation seat 110, the first pin shaft is installed in the first mounting hole and penetrates in the first through hole, so that the first tooth plate 131 is hinged to the translation seat 110 in the above manner, so that the first tooth plate 131 can swing around the central axis of the first pin shaft. The second tooth plate 141 is hinged to the translation seat 110 through a second pin shaft, a second through hole is provided on the second tooth plate 141, a second mounting hole is provided on the translation seat 110, the second pin shaft is installed in the second mounting hole and penetrates in the second through hole, so that the second tooth plate 141 is hinged to the translation seat 110 in the above manner, so that the second tooth plate 141 can swing around the central axis of the second pin shaft.

[0046] Of course, in addition to this, the first tooth plate 131 and the second tooth plate 141 may be hinged on the translation seat 110 through other existing structures.

[0047] A transmission gear 122 is fixed to both ends of the wheel shaft 121; the first tensioning frame 130 includes two first tooth plates 131; the two first tooth plates 131 are respectively hinged on the translation seat 110, and the first tensioning roller 132 is rotatably installed between the two first tooth plates 131; the two first tooth plates 131 correspond to the transmission gears 122 at both ends of the wheel shaft 121, and each first tooth plate 131 is meshed with the corresponding transmission gear 122; the second tensioning frame 140 includes two second tooth plates 141; the two second tooth plates 141 are respectively hinged on the translation seat 110, and the second tensioning roller 142 is rotatably installed between the two second tooth plates 141; the two second tooth plates 141 correspond to the two first tooth plates 131, and each first tooth plate 131 is meshed with the corresponding second tooth plate 141. By adopting the above arrangement, the swing stability 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 component 600 , the flattening component 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 , which is rotatably mounted on the translation seat 110 , and the light-transmitting coating component 600 also passes around the guide roller 230 , so that the guide roller 230 can guide the light-transmitting coating component 600 .

[0050] Preferably, the coating device of the 3D printing device further includes two guide rollers 230, and the light-transmitting coating component 600 also 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 tensioning roller 132 and the second tensioning roller 142, and the flattening component 500 is located between the two guide rollers 230.

[0051] Of course, in addition to this, the number of the guide rollers 230 can also be set according to actual needs, but setting two guide rollers 230 is the most preferred embodiment of the present invention. In this embodiment, the first tensioning roller 132 and the second tensioning roller 142 are respectively placed on both sides of the translation seat 110, that is, if the first tensioning roller 132 is located on the left side of the translation seat 110, the second tensioning roller 142 is located on the right side of the translation seat 110; if the first tensioning roller 132 is located on the right side of the translation seat 110, the second tensioning roller 142 is located on the left side of the translation seat 110. The plane formed by the central axis of the first tensioning roller 132 and the central axis of the second tensioning roller 142 forms a tensioning reference plane, the power roller 210 can be located above the tensioning reference plane, and the guide plane 521 can be located below the tensioning reference plane. During the transmission of the light-transmitting coating component 600, the parts of the light-transmitting coating component 600 show a downward narrowing movement trend during the transmission from the first tensioning roller 132 to the flattening component 500 via one of the guide rollers 230, squeezing, pressing, and flattening the printing material, thereby achieving material laying, and as the parts of the light-transmitting coating component 600 are transmitted from the flattening component 500 to the second tensioning roller 142 via another guide roller 230, they show an inclined upward movement trend, gradually separated from the material solidified by laser irradiation, and demolding is performed. By adopting the above structure, it is convenient to use the light-transmitting coating component 600 to smoothly coat the printing material, and it is convenient to separate the light-transmitting coating component 600 from the printing material to achieve demolding, which can greatly reduce the demolding release force and reduce the influence of the release force on the printed part.

[0052] The feeding device 200 includes a barrel 320 and a piston pushing device 330; the barrel 320 is provided with a discharge pipe 321; the discharge pipe 321 is used to discharge materials toward the light-transmitting coating component 600, and a piston 322 is movably installed inside the barrel 320; the piston pushing device 330 is used to push the piston 322 so that the piston 322 moves along the inside of the barrel 320. When in use, the piston pushing device 330 works, and the piston 322 is pushed by the piston pushing device 330 so that the piston 322 moves along the inside of the barrel 320. The printing material in the barrel 320 is sprayed out of the light-transmitting coating component 600 along the discharge pipe 321 under the pushing action of the piston 322, so that the printing material can be supplied to the light-transmitting coating component 600.

[0053] Of course, in addition to this, the feeding device 200 may also adopt a nozzle device, a roller coating device, etc., as long as it can be used to supply printing materials to the light-transmitting coating component 600. However, the feeding device 200 adopts a combination of a barrel 320 and a piston pushing device 330, which is the most preferred embodiment of the present invention and can facilitate continuous and stable discharge of materials.

[0054] The feeding device further includes a material rack 310 fixed on the translation seat 110. The piston pushing device 330 includes a first screw 331, a power component 332, a first screw nut 333 and a transmission member 334; the power component 332 is used to drive the first screw 331 to rotate; the first screw nut 333 is matched and sleeved on the first screw 331; the transmission member 334 is used to push the piston 322, and the transmission member 334 is connected to the first screw nut 333. When in use, the power component 332 works to drive the first screw 331 to rotate in the positive direction to move the first screw nut 333, and drives the piston 322 to move through the transmission member 334, so that the printing material in the barrel 320 is pushed toward the discharge pipe 321 through the piston 322, so that the printing material can be sprayed from the discharge pipe 321 onto the light-transmitting coating component 600, thereby realizing the discharge.

[0055] The barrel 320 is detachably fixed to the rack 310. On the basis that the feeding device 200 uses the barrel 320 and the piston pushing device 330, the piston pushing device 330 can push the piston 322 to realize material discharge, and then the barrel 320 is detachably fixed to the rack 310. After the printing material in the barrel 320 is used up, the barrel 320 can be removed 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 can be easily removed and replaced.

[0056] Preferably, the power component 332 includes a second drive motor. Specifically, the output shaft of the second drive motor is connected to the first screw rod 331. By using the second drive motor as the power component 332, the connection can be facilitated.

[0057] The material rack 310 is provided with a first bearing seat 311 and a second bearing seat 312 ; the first screw rod 331 is rotatably mounted on the first bearing seat 311 and the second bearing seat 312 , so that the first bearing seat 311 and the second bearing seat 312 can improve the supporting effect on the first screw rod 331 .

[0058] Preferably, the transmission member 334 is connected to the first screw nut 333 via a connecting member 335 to facilitate the connection between the transmission member 334 and the first screw nut 333 .

[0059] The piston 322 is provided with a convex portion 323, and the convex portion 323 is provided with an inner groove 324, and the inner groove 324 is used for embedding one end of the transmission member 334 away from the first screw nut 333. By providing the inner groove 324 on the convex portion 323 and embedding one end of the transmission member 334 away from the first screw nut 333 in the inner groove 324, the stability of the push piston 322 can be improved.

[0060] Preferably, the end of the transmission member 334 away from the first screw nut 333 is detachably connected to the protruding portion 323. By embedding the end of the transmission member 334 away from the first screw nut 333 in the built-in groove 324, and then detachably connecting the end of the transmission member 334 away from the first screw nut 333 to the protruding portion 323, the piston 322 and the piston pushing device 330 can be separated, and the stability of the pushing piston 322 can be further improved.

[0061] In this embodiment, the end of the transmission member 334 away from the first screw nut 333 is connected to the protruding portion 323 through a screw. Of course, in addition to this, the end of the transmission member 334 away from the first screw nut 333 can also be connected to the protruding portion 323 through a pin, etc., as long as the end of the transmission member 334 away from the first screw nut 333 can be connected to the protruding portion 323 in a detachable manner.

[0062] The transmission member 334 is movably mounted on the material rack 310. Specifically, a guide groove 313 is provided on the material rack 310, and the transmission member 334 includes 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 includes a first straight groove segment 314, a circular arc groove segment 315, and a second straight groove segment 316; the first straight groove segment 314 is opposite to the second straight groove segment 316, and the first straight groove segment 314 is connected to the second straight groove segment 316 through the circular arc groove segment 315. In the process of the power component 332 driving the first screw nut 333 to move axially along the first screw 331, the anti-bending chain moves along the guide groove 313 under the driving action of the first screw nut 333 to push the piston 322, so that the anti-bending chain can be guided through the guide groove 313. By providing a guide groove 313 on the material rack 310 and using an 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, thereby reducing the space.

[0063] Of course, in addition to this, the transmission member 334 can also be a transmission rod, or a push frame, etc., as long as it can push the piston 322. However, using an anti-bending chain as the transmission member 334 is the most preferred embodiment of the present invention, which can push the piston 322 and reduce the volume of the feeding device and the space.

[0064] The material rack 310 is provided with a mounting groove 317 for accommodating the material barrel 320, and the material rack 310 is detachably connected with a stopper 318 for stopping the material barrel 320. In this embodiment, the stopper 318 is fixed to the material rack 310 by screws. During the separation process of the material barrel 320 and the material rack 310, the material barrel 320 can be removed from the mounting groove 317 of the material rack 310 by simply removing the stopper 318 from the material rack 310, thereby completing the separation between the material barrel 320 and the material rack 310.

[0065] Of course, in addition to this, other structures can be used as long as the barrel 320 can be connected to the rack 310 in a detachable manner. For example, a pull-out box can be installed on the rack 310 in a pull-out manner, and a accommodating chamber for accommodating the barrel 320 is provided in the pull-out box, or a built-in chamber for accommodating the barrel 320 can be provided on the rack 310, and a buckle is provided at the opening of the built-in chamber (so that the barrel 320 can be conveniently moved in and out by opening the buckle, and the barrel 320 can be locked in the accommodating chamber by snapping the buckle), etc. However, by providing the rack 310 with a mounting groove 317 for accommodating the barrel 320, and the rack 310 is detachably connected with a stopper 318, it is a more preferred embodiment of the present invention, which can realize that the barrel 320 is detachably connected to the rack 310, and facilitate the separation of the barrel 320 from the rack 310.

[0066] Preferably, the translation drive device 400 includes a support frame 410, a second screw rod 411, a screw drive device 412, and a second screw nut 413; the screw drive device 412 is used to drive the second screw rod 411 to rotate; the second screw nut 413 is matched and sleeved on the second screw rod 411; the translation seat 110 is movably mounted on the support frame 410, and the translation seat 110 is connected to the second screw nut 413. When in use, the screw drive device 412 works to drive the second screw rod 411 to rotate, so as to move the second screw nut 413, so as to drive the translation seat 110 to translate.

[0067] Preferably, the second screw rod 411 is rotatably mounted on the support frame 410, and the screw rod driving device 412 can be 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 slider 416 that slidably cooperates with the guide rail 415 to improve the stability of the movement of the translation seat 110.

[0068] Of course, in addition to this, the translation drive device 400 can also use a cylinder, an oil cylinder, etc., as long as it can drive the translation seat 110 to translate. However, the translation drive device 400 uses a combination of a support frame 410, a second screw rod 411, a screw drive device 412, a second screw nut 413 and a translation seat 110. This is the most preferred embodiment of the present invention and can improve the stability of the translation of the translation seat 110.

[0069] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A coating device for a 3D printing device, characterized in that: It includes a translation drive device, a translation seat, a power roller, a rotation drive device, a paving component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device and an adjusting device; the translation drive device is used to drive the translation seat to translate; the power roller is rotatably mounted on the translation seat; the rotation drive device is mounted 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 the first tensioning frame includes a first tensioning roller; the second tensioning frame is hinged on the translation seat, and the second tensioning frame includes a second tensioning roller; the adjusting device is mounted on the translation seat, and the adjusting device is 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 a ring shape, and the light-transmitting coating component is wound around 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 the feeding device is used to supply printing material toward the light-transmitting coating component; the flattening component includes a flattening seat and a light-transmitting block; the flattening seat is provided with a matching groove, and the light-transmitting block is embedded in the matching groove; the lower end of the light-transmitting block is provided with a guide plane for the light-transmitting coating component to wind around; the adjusting device includes a rotating body, a pawl, an elastic component and an elastic reset element; the rotating body includes an axle, a transmission gear and a ratchet; the axle is rotatably mounted on the translation seat; the transmission gear and the ratchet are respectively fixed on the axle; 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 meshed with the transmission gear; the second tensioning frame is provided with a second tooth pattern, and the second The tensioning frame is meshed 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 to buckle into the tooth groove of the ratchet wheel; the elastic component is used to provide an elastic force that causes the pawl to buckle into the tooth groove of the ratchet wheel; the elastic reset element is used to provide an elastic force that causes the wheel axle to rotate and reset to the working position. When the wheel axle is in the working position, the distance between the first tensioning roller and the second tensioning roller is the largest; the first tensioning frame also includes 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 meshed with the transmission gear; the feeding device includes a barrel and a piston pushing device; the barrel is provided with a discharge pipe; the discharge pipe is used to discharge material toward the light-transmitting coating component, and a piston is movably installed inside the barrel; the piston pushing device is used to push the piston to move the piston along the inside of the barrel.

2. The coating device of the 3D printing equipment according to claim 1, characterized in that: The rotary drive device comprises a first drive motor, a driving pulley, a driven pulley and a transmission belt; the first drive motor is used to drive the driving pulley to rotate, the driven pulley is fixed on the power roller, and the transmission belt is wound around the driving pulley and the driven pulley.

3. The coating device of the 3D printing equipment according to claim 2, characterized in that: The body of the first driving motor is fixed on the translation seat.

4. The coating device of the 3D printing equipment according to claim 3, characterized in that: The feeding device also includes a material rack; the material rack is fixed on the translation seat; the piston pushing device includes a first screw rod, a power component, a first screw rod nut and a transmission component; the transmission component is movably installed on the material rack; the power component is used to drive the first screw rod to rotate; the first screw rod nut is matchingly sleeved on the first screw rod; the transmission component is used to push the piston, and the transmission component is connected to the first screw rod nut.

5. The coating device of the 3D printing equipment according to claim 4, characterized in that: The material barrel is fixed on the material rack in a detachable manner.

6. The coating device of the 3D printing equipment according to claim 1, characterized in that: The first tensioning roller and the second tensioning roller are respectively disposed on two sides of the translation seat.

7. The coating device of the 3D printing equipment according to claim 1 or 6, characterized in that: A plane formed by the central axis of the first tensioning roller and the central axis of the second tensioning roller forms 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.

8. The coating device of the 3D printing equipment according to claim 1, characterized in that: 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 rotatably mounted on the translation seat respectively; the rotary drive device is used to drive the two power rollers to rotate; the light-transmitting coating component passes around the two power rollers.

9. The coating device of the 3D printing equipment according to claim 1, characterized in that: The coating device of the 3D printing equipment further comprises a guide roller, which is rotatably mounted on the translation seat, and the light-transmitting coating component also passes around the guide roller.

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