Coating apparatus for 3D printing device

Abstract

Disclosed in the present invention is a coating apparatus for a 3D printing device, comprising a translation driving device, a translation seat, power rollers, a rotation driving device, a spreading component, a first tensioning frame, a second tensioning frame, a light-transmissive coating component, a feeding device, and an adjustment device, wherein the translation driving device is used for driving the translation seat to translate; the power rollers are rotatably mounted on the translation seat; the rotation driving device is mounted on the translation seat and used for driving the power rollers to rotate; the first tensioning frame is hingedly connected to the translation seat and comprises a first tensioning roller; the second tensioning frame is hingedly connected to the translation seat and comprises a second tensioning roller; the adjustment device is mounted on the translation seat. In the present invention, the light-transmissive coating component is used for performing coating in a tensioned state, and by means of the guidance of the spreading component, the light-transmissive coating component can evenly apply a printing material, thereby significantly improving the coating effect, and further improving the printing effect.

Description

A coating device for 3D printing equipment Technical Field

[0001] This invention relates to a coating apparatus for a 3D printing device. Background Technology

[0002] 3D printing technology, as a rapid prototyping process that manufactures objects quickly by printing layer by layer, has been favored by many industries due to its advantages such as shortening product development cycles and saving production costs. In the 3D printing process, printing material is generally first fed onto a light-transmitting coating component using a feeding device, and then the material is coated using the transmission mechanism of the light-transmitting coating component. However, existing coating devices have poor coating effects, which can easily affect the printing results. Furthermore, the replacement of the light-transmitting coating component is inconvenient, thus falling far short of industry requirements. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention aims to provide a coating device for a 3D printing equipment, which can improve the coating effect and facilitate the replacement of light-transmitting coating parts.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A coating device for a 3D printing equipment includes a translation drive, a translation base, a power roller, a rotation drive, a leveling component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device, and an adjusting device. The translation drive drives the translation base to translate. The power roller is rotatably mounted on the translation base. The rotation drive is mounted on the translation base and drives the power roller to rotate. The first tensioning frame is hinged to the translation base and includes a first tensioning roller. The second tensioning frame is hinged to the translation base and includes a second tensioning roller. The adjusting device... The device is mounted on a translation base, and the adjusting device is used to adjust the gap between the first tension roller and the second tension roller; the leveling component is mounted on the translation base; the light-transmitting coating component is in the shape of a collar, and the light-transmitting coating component passes around the power roller, the first tension roller, the second tension roller and the leveling component; the feeding device is mounted on the translation base, and the feeding device is used to supply printing material toward the light-transmitting coating component; the leveling component includes a leveling base and a light-transmitting block; the leveling base is provided with a mating groove, and the light-transmitting block is embedded in the mating groove; the lower end of the light-transmitting block is provided with a guide plane for the light-transmitting coating component to pass through.

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

[0007] The body of the first drive motor is fixed on the translation base.

[0008] The feeding device includes a material cylinder and a piston pushing device; the material cylinder 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 material cylinder; the piston pushing device is used to push the piston to make the piston move along the inside of the material cylinder.

[0009] The feeding device further includes a material rack; the material rack is fixed on a translation seat; the piston pushing device includes a first lead screw, a power component, a first lead screw nut, and a transmission component; the transmission component is movably mounted on the material rack; the power component is used to drive the first lead screw to rotate; the first lead screw nut is fitted onto the first lead screw; the transmission component is used to push the piston, and the transmission component is connected to the first lead screw nut.

[0010] The material cylinder is detachably fixed to the material rack.

[0011] The first tensioning roller and the second tensioning roller are placed on both sides of the translation seat.

[0012] The plane formed by the central axis of the first tensioning roller and the central axis of 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.

[0013] In the transmission direction of the light-transmitting coating component, the leveling component is located between the first tension roller and the second tension roller; the coating device of the 3D printing equipment includes two power rollers; the two power rollers are rotatably mounted on the translation seat; 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 a translation seat, and the light-transmitting coating component also passes around the guide roller.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention provides a coating device for a 3D printing equipment. It employs a combination of a translation drive device, a translation seat, a power roller, a rotation drive device, a leveling component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device, and an adjustment device. The adjustment device can adjust the distance between the first and second tensioning rollers, keeping the light-transmitting coating component in a taut state. This reduces loosening of the light-transmitting coating component during coating, ensuring it coats under tension. Furthermore, the leveling component guides the light-transmitting coating component, allowing for a smooth coating of the printing material, significantly improving the coating effect and thus the printing quality. It also facilitates the replacement of the light-transmitting coating component. In addition, the rationally designed adjustment device makes tension adjustment convenient and quick, saving adjustment time and improving efficiency. Attached Figure Description

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

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

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

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

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

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

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

[0024] Figure 8 is an exploded view of the feeding device;

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

[0026] Among them, 100 is the adjusting device; 110 is the translation seat; 120 is the rotating body; 121 is the wheel axle; 122 is the transmission gear; 123 is the ratchet; 130 is the first tensioning frame; 131 is the first toothed plate; 132 is the first tensioning roller; 133 is the first toothed groove; 140 is the second tensioning frame; 141 is the second toothed plate; 142 is the second tensioning roller; 143 is the second toothed groove; 151 is the pawl; 160 is the elastic reset element; 200 is the feeding device; 210 is the power roller; 220 is the rotary drive device; 221 is the first drive motor; 222 is the driving pulley; 223 is the driven pulley; 224 is the transmission belt; 230 is the guide roller; 310 is the material rack; 311 is the first bearing seat; 312 is the second bearing seat; 313 is the guide... 314. First straight groove segment; 315. Arc groove segment; 316. Second straight groove segment; 317. Mounting groove; 318. Stopping component; 320. Material cylinder; 321. Discharge pipe; 322. Piston; 323. Protrusion; 324. Internal groove; 330. Piston pushing device; 331. First lead screw; 332. Power component; 333. First lead screw nut; 334. Transmission component; 335. Connecting component; 400. Translation drive device; 410. Support frame; 411. Second lead screw; 412. Lead screw drive device; 413. Second lead screw nut; 415. Guide rail; 416. Slider; 500. Flattening component; 510. Flattening seat; 520. Light-transmitting block; 521. Guide plane; 600. Light-transmitting coating component. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] As shown in Figures 1-9, a coating device for a 3D printing equipment includes a translation drive device 400, a translation base 110, a power roller 210, a rotation drive device 220, a leveling 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 drives the translation base 110 to translate. The power roller 210 is rotatably mounted on the translation base 110. The rotation drive device 220 is mounted on the translation base 110 and drives the power roller 210 to rotate. The first tensioning frame 130 is hinged to the translation base 110 and includes a first tensioning roller 132. The second tensioning frame 140 is hinged to the translation base 110 and includes a second tensioning roller 142. The adjusting device 100 is mounted on the translation seat 110 and is used to adjust the distance between the first tension roller 132 and the second tension roller 142; the leveling component 500 is mounted on the translation seat 110; the light-transmitting coating component 600 is in the shape of a collar and passes around the power roller 210, the first tension roller 132, the second tension roller 142 and the leveling component 500; the feeding device 200 is mounted on the translation seat 110 and is used to supply printing material toward the light-transmitting coating component 600; the leveling component 500 includes a leveling seat 510 and a light-transmitting block 520; the leveling seat 510 is provided with a mating groove, and the light-transmitting block 520 is embedded in the mating 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] In use, by adjusting the adjusting device 100, the distance between the first tensioning roller 132 and the second tensioning roller 142 is increased, so that the light-transmitting coating component 600, which passes through the power roller 210, the first tensioning roller 132, the second tensioning roller 142 and the leveling component 500, is in a tensioned state as the distance between the first tensioning roller 132 and the second tensioning roller 142 increases. Then, the translation drive device 400 drives the translation seat 110 to translate, and the rotation drive device 220 drives the power roller 210 to rotate. The light-transmitting coating component 600 is driven by the power roller 210 and performs coating in a tensioned state. Moreover, during the transmission of the light-transmitting coating component 600, the light-transmitting coating component 600 can be evenly coated with printing material under the guidance of the guide plane 521 of the leveling component 500, so as to improve the coating effect and thus improve the printing effect. Therefore, the coating apparatus of the 3D printing equipment provided by the present invention, by employing a combination of a translation drive device 400, a translation seat 110, a power roller 210, a rotation drive device 220, a leveling 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, allows the adjusting device 100 to adjust the distance between the first tensioning roller 132 and the second tensioning roller 142, keeping the light-transmitting coating component 600 in a tensioned state. This reduces the loosening of the light-transmitting coating component 600 during the coating process, ensuring that the light-transmitting coating component 600 is coated in a tensioned state, thus improving the coating effect. Furthermore, the leveling component 500 guides the light-transmitting coating component... The 600 can evenly coat the printing material, which can 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 distance between the first tension roller 132 and the second tension roller 142 can be reduced by adjusting the adjustment device 100. This allows the light-transmitting coating component 600, which is wrapped around the power roller 210, the first tension roller 132, the second tension roller 142 and the leveling component 500, to be in a relaxed state as the distance between the first tension roller 132 and the second tension roller 142 is reduced. At this time, the light-transmitting coating component 600 can be removed, and then a new light-transmitting coating component 600 can be wrapped around the power roller 210, the first tension roller 132, the second tension roller 142 and the leveling component 500, thereby facilitating the replacement of the light-transmitting coating component 600.

[0030] In 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 made of a coating film or any material suitable for coating. The light-transmitting coating component 600 is ring-shaped, meaning that at least one segment of its extension path forms a loop that can be wrapped around the power roller 210, the first tension roller 132, the second tension roller 142, and the leveling component 500. For example, the two 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 drives 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. In use, the first drive motor 221 drives the driving pulley 222 to rotate, which in turn drives the driven pulley 223 and the power roller 210 to rotate via 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. The rotary 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. By using the two power rollers 210 to drive the light-transmitting coating component 600, the driving power of the light-transmitting coating component 600 can be increased, and the driving stability of the light-transmitting coating component 600 can be improved.

[0034] Specifically, each of the two power rollers 210 is 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 includes a rotating body 120, a pawl 151, an elastic component, and an elastic reset element 160; the rotating body 120 includes a wheel axle 121, a transmission gear 122, and a ratchet 123; the wheel axle 121 is rotatably mounted on a translation seat 110; the transmission gear 122 and the ratchet 123 are respectively fixed on the wheel axle 121; the elastic reset element 160 is disposed between the rotating body 120 and the translation seat 110; a first tensioning frame 130 is provided with a first The first tensioner 130 has a toothed groove 133 and meshes with the transmission gear 122; the second tensioner 140 has a second toothed groove 143 and meshes with the first tensioner 130; the pawl 151 is hinged to the translation seat 110, and the elastic component is disposed between the pawl 151 and the translation seat 110; the pawl 151 is used to engage in the tooth groove of the ratchet 123; the elastic component is used to provide an elastic force to cause the pawl 151 to engage in the tooth groove of the ratchet 123. In use, the operator manually or via an external rotating drive device 220 rotates the axle 121 forward. The ratchet 123 and transmission gear 122 rotate forward with the axle 121. The first tensioning bracket 130 oscillates under the drive of the transmission gear 122, and the second tensioning bracket 140 oscillates under the drive of the first tensioning bracket 130. As the first tensioning bracket 130 and the second tensioning bracket 140 oscillate, the distance between the first tensioning roller 132 and the second tensioning roller 142 can be adjusted. Once the axle 121 has rotated to its designated position, the pawl 151 engages with the corresponding tooth groove of the ratchet 123, thus locking the first tensioning bracket 130 and the second tensioning bracket 140 in their respective positions. Pulling the pawl 151 separates it from the ratchet 123, at which point the axle 121 elastically resets under the elastic force of the elastic reset element 160. The first tensioning frame 130 swings and resets under the drive of the transmission gear 122, and the second tensioning frame 140 swings and resets under the drive 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 adjusted flexibly and quickly, making the tension adjustment operation of the light-transmitting coating component 600 passing around the first tensioning roller 132 and the second tensioning roller 142 more convenient and quick, saving tension adjustment time and improving 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 engage in the tooth groove of the ratchet 123, thereby improving the convenience of operation and reducing costs.

[0037] Of course, in addition to springs, any existing elastic component on the market can be used for the elastic component, such as elastic strips.

[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 a coil spring for the elastic reset element 160, elastic force can be provided to the axle 121, while also facilitating installation.

[0039] Of course, in addition to coil springs, the elastic reset element 160 can also be any existing elastic reset element on the market, such as torsion springs, 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 axle 121 to rotate and reset to the working position. When the axle 121 is in the working position, the distance between the first tension roller 132 and the second tension roller 142 is at its maximum. Thus, after the user pulls the pawl 151 to separate the pawl 151 from the ratchet 123, the axle 121 can 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 at its maximum, and the light-transmitting coating component 600, which is wound around the power roller 210, the leveling component 500, the first tension roller 132, and the second tension roller 142, is in a tensioned state. If it is necessary to replace the light-transmitting coating... When the fabric component 600 is in operation, the operator can manually rotate the axle 121 forward. The axle 121 rotates from the working position to another position, causing the ratchet 123 and transmission gear 122 to rotate forward with it. The first tensioning frame 130 oscillates under the drive of the transmission gear 122, and the second tensioning frame 140 oscillates under the drive of the first tensioning frame 130. As the first tensioning frame 130 and the second tensioning frame 140 oscillate, the distance between the first tensioning roller 132 and the second tensioning roller 142 is reduced. Once the axle 121 has rotated to its final position, the pawl 151 engages with the tooth groove of the ratchet 123 under the elastic force of the elastic component, thus locking the device. The function is to keep the first tensioning bracket 130 and the second tensioning bracket 140 in their respective positions, facilitating the removal and replacement of the light-transmitting coating component 600. After the light-transmitting coating component 600 is replaced, simply pull the pawl 151 to separate it from the ratchet 123. At this time, the wheel axle 121 elastically returns to its working position under the elastic force of the elastic reset element 160. Then, release the pawl 151, allowing it to engage with the tooth groove of the ratchet 123 under the elastic force of the elastic element. This allows the light-transmitting coating component wound around the power roller 210, the leveling component 500, the first tensioning roller 132, and the second tensioning roller 142 to be removed. The tension of component 600 makes tension adjustment convenient and quick, saving adjustment time and improving adjustment efficiency. Moreover, during the coating process driven by the power roller 210, the axle 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 at their maximum distance. This ensures that the light-transmitting coating component 600 remains in a tensioned state during the coating process, improving coating stability. This further reduces or even eliminates the loosening of the light-transmitting coating component 600 during the coating process, further improving the coating effect.

[0041] In the actual design, in order to facilitate the identification of the working position of the axle 121, a first marking point can be set on the axle 121 and a second marking point can be set on the translation seat 110. When the axle 121 is reset to the working position, the first marking point is directly opposite the second marking point. If the axle 121 rotates from the working position to other positions, the first marking point and the second marking point are offset, thereby making it convenient for the user to identify the position of the axle 121.

[0042] The translation seat 110 is provided with a mounting cavity, and the coil spring is located in the mounting cavity, which facilitates the installation of the coil spring and avoids the coil spring being exposed.

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

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

[0045] In this embodiment, the first toothed plate 131 is hinged to the translation seat 110 via a first pin. The first toothed plate 131 has a first through hole, and the translation seat 110 has a first mounting hole. The first pin is installed in the first mounting hole and passes through the first through hole, thereby enabling the first toothed plate 131 to be hinged to the translation seat 110 and swing around the central axis of the first pin. The second toothed plate 141 is hinged to the translation seat 110 via a second pin. The second toothed plate 141 has a second through hole, and the translation seat 110 has a second mounting hole. The second pin is installed in the second mounting hole and passes through the second through hole, thereby enabling the second toothed plate 141 to be hinged to the translation seat 110 and swing around the central axis of the second pin.

[0046] Of course, in addition to this, 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 axle 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 respectively hinged to the translation seat 110, and the first tensioning roller 132 is rotatably installed between the two first toothed plates 131; the two first toothed plates 131 correspond one-to-one with the transmission gears 122 at both ends of the axle 121, and each first toothed plate 131 meshes with the corresponding transmission gear 122; the second tensioning frame 140 includes two second toothed plates 141; the two second toothed plates 141 are respectively hinged to the translation seat 110, and the second tensioning roller 142 is rotatably installed between the two second toothed plates 141; the two second toothed plates 141 correspond one-to-one with the two first toothed plates 131, and each first toothed plate 131 meshes with the corresponding second toothed plate 141. By adopting the above configuration, 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 component 600, the leveling 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 also includes a guide roller 230, which is rotatably mounted on the translation seat 110. 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 equipment further includes two guide rollers 230, and the light-transmitting coating component 600 also passes around the two guide rollers 230. In the transmission direction of the light-transmitting coating component 600, the two guide rollers 230 are located between the first tension roller 132 and the second tension roller 142, and the leveling component 500 is located between the two guide rollers 230.

[0051] Of course, the number of guide rollers 230 can 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 tension roller 132 and the second tension roller 142 are respectively placed on both 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, then 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, then 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 is formed as the 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 process of the light-transmitting coating component 600, each part of the light-transmitting coating component 600 moves downwards and narrows as it is driven from the first tensioning roller 132 through one of the guide rollers 230 to the leveling component 500. This forces the printing material to flatten, compact, and spread, thus achieving material placement. As each part of the light-transmitting coating component 600 moves upwards and tilts as it is driven from the leveling component 500 through another guide roller 230 to the second tensioning roller 142, it gradually separates from the material cured by laser irradiation, facilitating demolding. By adopting the above structure, it is convenient to use the light-transmitting coating component 600 to apply the printing material evenly and to facilitate the separation of the light-transmitting coating component 600 from the printing material for demolding. This greatly reduces the demolding release force and minimizes its impact on the printed parts.

[0052] The feeding device 200 includes a material cylinder 320 and a piston pushing device 330. A discharge pipe 321 is provided on the material cylinder 320. The discharge pipe 321 discharges material towards the light-transmitting coating component 600. A piston 322 is movably installed inside the material cylinder 320. The piston pushing device 330 pushes the piston 322 to move it along the inside of the material cylinder 320. In use, the piston pushing device 330 operates, pushing the piston 322 to move it along the inside of the material cylinder 320. Under the pushing action of the piston 322, the printing material inside the material cylinder 320 is sprayed out along the discharge pipe 321 onto the discharge surface of the light-transmitting coating component 600, thereby supplying printing material to the light-transmitting coating component 600.

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

[0054] The feeding device also includes a material rack 310 fixed on the translation seat 110. The piston pushing device 330 includes a first lead screw 331, a power component 332, a first lead screw nut 333, and a transmission component 334; the power component 332 is used to drive the first lead screw 331 to rotate; the first lead screw nut 333 is fitted onto the first lead screw 331; the transmission component 334 is used to push the piston 322, and the transmission component 334 is connected to the first lead screw nut 333. In use, the power component 332 operates, driving the first lead screw 331 to rotate forward, thereby causing the first lead screw nut 333 to move, and driving the piston 322 to move through the transmission component 334, so that the printing material in the material cylinder 320 is pushed towards 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 material discharge.

[0055] The material cylinder 320 is detachably fixed to the material rack 310. Based on the material feeding device 200 using the material cylinder 320 and the piston pushing device 330 to push the piston 322 for material discharge, the material cylinder 320 is detachably fixed to the material rack 310. After the printing material in the material cylinder 320 is used up, the material cylinder 320 can be removed from the material rack 310, separating the piston from the piston pushing device 330. Then, a new material cylinder 320 can be connected to the material rack 310, facilitating the disassembly and replacement of the material cylinder 320.

[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 lead screw 331. Using a second drive motor for the power component 332 facilitates connection.

[0057] The material rack 310 is provided with a first bearing seat 311 and a second bearing seat 312; the first lead screw 331 is rotatably mounted on the first bearing seat 311 and the second bearing seat 312, thereby improving the support of the first lead screw 331 through the first bearing seat 311 and the second bearing seat 312.

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

[0059] The piston 322 is provided with a protrusion 323, and the protrusion 323 is provided with an internal groove 324. The internal groove 324 is used for the end of the transmission member 334 away from the first lead screw nut 333 to be fitted. By providing an internal groove 324 on the protrusion 323 and by using the end of the transmission member 334 away from the first lead screw nut 333 to be fitted into the internal groove 324, the stability of the pushing piston 322 can be improved.

[0060] Preferably, the end of the transmission member 334 away from the first lead screw nut 333 is detachably connected to the protrusion 323. By embedding the end of the transmission member 334 away from the first lead screw nut 333 into the built-in groove 324, and then detachably connecting the end of the transmission member 334 away from the first lead screw nut 333 to the protrusion 323, the separation between the piston 322 and the piston pushing device 330 can be achieved, 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 lead screw nut 333 is connected to the protrusion 323 by a screw. Of course, in addition, the end of the transmission member 334 away from the first lead screw nut 333 can also be connected to the protrusion 323 by a pin or the like, as long as the end of the transmission member 334 away from the first lead screw nut 333 can be detachably connected to the protrusion 323.

[0062] The transmission component 334 is movably mounted on the material rack 310. Specifically, the material rack 310 is provided with a guide groove 313, and the transmission component 334 includes an anti-bending chain; the anti-bending chain is located within the guide groove 313 and moves along the guide groove 313. Specifically, the guide groove 313 includes a first straight groove segment 314, an 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 arc groove segment 315. During the operation of the power component 332, which drives the first lead screw nut 333 to move axially along the first lead screw 331, the anti-bending chain moves along the guide groove 313 under the driving action of the first lead screw nut 333, exerting a pushing effect on the piston 322, so that the anti-bending chain can be guided by the guide groove 313. By providing a guide groove 313 on the material rack 310 and using an anti-bending chain for the transmission component 334, the piston 322 can be pushed to move, while the volume of the feeding device can be reduced, thus saving space.

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

[0064] The material rack 310 is provided with a mounting groove 317 for accommodating the material cylinder 320. A stopper 318 for blocking the material cylinder 320 is detachably connected to the material rack 310. In this embodiment, the stopper 318 is fixed to the material rack 310 with screws. During the separation of the material cylinder 320 from the material rack 310, simply removing the stopper 318 from the material rack 310 allows the material cylinder 320 to be removed from the mounting groove 317, thus completing the separation between the material cylinder 320 and the material rack 310.

[0065] Of course, other structures can also be used, as long as the material cylinder 320 can be detachably connected to the material rack 310. For example, a pull-out box can be installed on the material rack 310, with a receiving cavity for accommodating the material cylinder 320. Alternatively, an internal cavity for accommodating the material cylinder 320 can be provided on the material rack 310, with a buckle at the opening of the internal cavity (so that the material cylinder 320 can be easily inserted and removed by opening the buckle, and locked in the receiving cavity by closing the buckle), and so on. However, a more preferred embodiment of the present invention is to provide an installation groove 317 for accommodating the material cylinder 320 on the material rack 310, with a stopper 318 detachably connected to the material rack 310. This allows the material cylinder 320 to be detachably connected to the material rack 310 while facilitating the separation of the material cylinder 320 from the material rack 310.

[0066] Preferably, the translation drive device 400 includes a support frame 410, a second lead screw 411, a lead screw drive device 412, and a second lead screw nut 413; the lead screw drive device 412 drives the second lead screw 411 to rotate; the second lead screw nut 413 is fitted onto the second lead screw 411; the translation seat 110 is movably mounted on the support frame 410, and the translation seat 110 is connected to the second lead screw nut 413. In use, the lead screw drive device 412 operates, driving the second lead screw 411 to rotate, thereby causing the second lead screw nut 413 to move, which in turn drives the translation seat 110 to translate.

[0067] Preferably, the second lead screw 411 is rotatably mounted on the support frame 410. The lead screw drive device 412 can be a motor, a motor and transmission belt assembly, a rotary cylinder, or a motor and gear assembly, etc., as long as it can drive the second lead screw 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 slides with the guide rail 415 to improve the smoothness of the movement of the translation seat 110.

[0068] Of course, in addition to the above, the translation drive device 400 can also be a cylinder, hydraulic cylinder, etc., as long as it can drive the translation seat 110 to move. However, the most preferred embodiment of the present invention is to combine the translation drive device 400 with a support frame 410, a second lead screw 411, a lead screw drive device 412, a second lead screw nut 413 and a translation seat 110, which can improve the stability of the translation of the translation seat 110.

[0069] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A coating device for a 3D printing equipment, characterized in that: The device includes a translation drive, a translation base, a power roller, a rotary drive, a leveling component, a first tensioning frame, a second tensioning frame, a light-transmitting coating component, a feeding device, and an adjusting device. The translation drive drives the translation base to move horizontally. The power roller is rotatably mounted on the translation base. The rotary drive is mounted on the translation base and drives the power roller to rotate. The first tensioning frame is hinged to the translation base and includes a first tensioning roller. The second tensioning frame is hinged to the translation base and includes a second tensioning roller. The adjusting device is mounted on the translation base and adjusts the distance between the first and second tensioning rollers. The leveling component is mounted on the translation seat; the light-transmitting coating component is ring-shaped and passes around the power roller, the first tension roller, the second tension roller, and the leveling component; the feeding device is mounted on the translation seat and is used to supply printing material toward the light-transmitting coating component; the leveling component includes a leveling seat and a light-transmitting block; the leveling seat is provided with a mating groove, and the light-transmitting block is embedded in the mating groove; the lower end of the light-transmitting block is provided with a guide plane for the light-transmitting coating component to pass through; the adjusting device includes a rotating body, a pawl, an elastic component, and an elastic reset element; the rotating body includes a wheel axle, a transmission gear, and a ratchet; the wheel axle is rotatably mounted on the translation seat; the transmission gear and the ratchet are respectively fixed on the wheel axle; the elastic reset element is disposed between the rotating body and the translation seat; the first tensioning frame is provided with a first tooth, and the first tensioning frame meshes with the transmission gear; the second tensioning frame is provided with a second tooth, and the second The tensioning frame engages with the first tensioning frame; the pawl is hinged to the translation seat, and the elastic component is disposed between the pawl and the translation seat; the pawl is used to engage in the tooth groove of the ratchet; the elastic component is used to provide an elastic force to cause the pawl to engage in the tooth groove of the ratchet; the elastic reset element is used to provide an elastic force to cause the wheel axle to rotate back to the working position, and the distance between the first tensioning roller and the second tensioning roller is the largest when the wheel axle is in the working position; the first tensioning frame also includes a first toothed plate; the first toothed plate is hinged to the translation seat, and the first tensioning roller is rotatably mounted on the first toothed plate; the first toothed plate is provided with the first tooth pattern, and the first toothed plate engages with the transmission gear; the feeding device includes a material cylinder and a piston pushing device; the material cylinder 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 material cylinder; the piston pushing device is used to push the piston to make the piston move along the inside of the material cylinder.

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

3. The coating apparatus of the 3D printing equipment as described in claim 2, characterized in that: The body of the first drive motor is fixed on the translation base.

4. The coating apparatus of the 3D printing equipment as described in claim 3, characterized in that: The feeding device further includes a material rack; the material rack is fixed on a translation seat; the piston pushing device includes a first lead screw, a power component, a first lead screw nut, and a transmission component; the transmission component is movably mounted on the material rack; the power component is used to drive the first lead screw to rotate; the first lead screw nut is fitted onto the first lead screw; the transmission component is used to push the piston, and the transmission component is connected to the first lead screw nut.

5. The coating apparatus of the 3D printing equipment as described in claim 4, characterized in that: The material cylinder is detachably fixed to the material rack.

6. The coating apparatus of the 3D printing equipment as described in claim 1, characterized in that: The first tensioning roller and the second tensioning roller are placed on both sides of the translation seat.

7. The coating apparatus of the 3D printing equipment as described in claim 1 or 6, characterized in that: The plane formed by the central axis of the first tensioning roller and the central axis of 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.

8. The coating apparatus of the 3D printing equipment as described in claim 1, characterized in that: In the transmission direction of the light-transmitting coating component, the leveling component is located between the first tension roller and the second tension roller; the coating device of the 3D printing equipment includes two power rollers; the two power rollers are rotatably mounted on the translation seat; 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 apparatus of the 3D printing equipment as described in claim 1, characterized in that: The coating device of the 3D printing equipment also includes a guide roller, which is rotatably mounted on a translation seat, and the light-transmitting coating component also passes around the guide roller.

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