A 3D printing device for recycling waste plastics

Abstract

The present invention provides a 3D printing device for recycling waste plastics, belonging to the field of 3D printing technology. The device comprises a printer body, the bottom of which is fixedly connected to a support table, a storage cavity is provided on one outer wall of the support table, and a storage drawer is slidably connected to the inner wall of the storage cavity; and a scraping assembly is used to scrape dust or residual materials off the printing plate, and the scraping assembly is connected to the support table. By providing a scraping assembly, the present invention can not only scrape dust or residual materials off the printing plate to prevent dust or residual materials from affecting the workpiece printed by the 3D printer, but also guide the scraped dust or residual materials into the storage drawer for easy later cleaning, thereby improving the work efficiency of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing device for recycling waste plastics. Background Art

[0002] Plastic waste leaks into the natural environment, including soil and water, and is difficult to degrade, causing environmental hazards such as visual pollution, soil damage, and the release of microplastics. As awareness of environmental protection and waste sorting grows, demand for plastic waste disposers is increasing. Currently, some 3D printing devices on the market can recycle waste plastics and directly process them for use as raw materials. These 3D printing devices typically fragment the waste plastic, then melt the fragmented plastic using a melting element. Finally, the melt is injected through a pipe into the 3D printing nozzle to achieve 3D printing.

[0003] However, when a 3D printer using plastic as consumables prepares a workpiece on a workbench, the printed workpiece is prone to warping. In order to solve this problem, the staff will apply a layer of glue on the printing plate on the workbench to facilitate the printed workpiece to adhere to the printing plate, thereby avoiding the occurrence of warping. After each workpiece is printed, it is necessary to remove the workpiece from the printing plate first, and then clean the remaining workpiece waste on the printing plate. Only then can the printing plate be placed back on the workbench and wait for the next print. This process requires the staff to manually scrape off the workpiece waste and apply glue, which affects the staff's work efficiency. Therefore, the present invention provides a waste plastic recycling 3D printing device to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a 3D printing device for recycling waste plastics. By providing a scraping component, not only can dust or residual materials on the printing plate be scraped off, preventing dust or residual materials from affecting the workpiece printed by the 3D printer, but the scraped dust or residual materials can also be directed into a storage drawer for easy later cleaning, thereby improving the work efficiency of the staff. In addition, after scraping the dust or residual materials on the printing plate, the top outer wall of the printing plate can be coated with glue to ensure that the printed workpiece adheres better to the printing plate, preventing the workpiece from warping and thereby improving the workpiece's print quality. The above configuration can solve the problem of manually cleaning the workpiece waste remaining on the printing plate, which affects work efficiency.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A 3D printing device for recycling waste plastics includes a printer body, the bottom of which is fixedly connected to a support table, a storage cavity is formed on an outer wall of one side of the support table, and a storage drawer is slidably connected to the inner wall of the storage cavity; a scraping assembly is used to scrape dust or residual material on the printing plate, and the scraping assembly is connected to the support table.

[0007] Optionally, the scraping assembly includes a workbench, which is fixedly connected to the middle position of the outer wall of the top of the support table, wherein the workbench is in a "U" shape, and a collecting funnel is fixedly connected to the outer wall of the top of the support table near the workbench, and a guide protrusion is fixedly connected to the outer wall of the top of the workbench near the collecting funnel.

[0008] Optionally, a blocking plate is fixedly connected to one side of the top outer wall of the workbench, a sliding guide groove is provided on the middle outer wall of the blocking plate, a first support plate is fixedly connected to the outer wall of the workbench close to the blocking plate, and a first abutment block is fixedly connected to the end of the first support plate away from the workbench.

[0009] Optionally, a second support plate is fixedly connected to the outer wall of the workbench away from the collecting funnel, a sliding groove is provided on the outer wall of the second support plate away from the workbench, a sliding rod is slidably connected to the inner wall of the sliding groove, and a plurality of sliding teeth are provided on the sliding rod, wherein the plurality of sliding teeth are distributed in a linear array.

[0010] Optionally, a brushless motor is fixedly connected to the outer wall of the second support plate at the top of the workbench, a rotating gear is fixedly connected to the top of the brushless motor, the sliding rod is fixedly connected to the first frame at one end close to the workbench, both ends of the first frame are fixedly connected to the same second frame, and two connecting plates are fixedly connected to the outer wall of the second frame away from the first frame, the two connecting plates are symmetrical about the center of the second frame, and the two connecting plates are fixedly connected to the same C-shaped elastic plate.

[0011] Optionally, the C-shaped elastic plate is fixedly connected to a shovel plate at one end away from the connecting plate, and baffles are symmetrically fixedly connected to both sides of the outer wall of the top of the shovel plate. The baffle on the side of the shovel plate close to the blocking plate has a sliding protrusion fixedly connected to the outer wall on the side close to the blocking plate.

[0012] Optionally, rotating protrusions are symmetrically fixedly connected to the inner walls at both ends of the second skeleton, and the rotating protrusion on the second skeleton away from the first support plate is provided with an avoidance groove on the outer wall on the side close to the first support plate, and the two rotating protrusions are rotatably connected to the same rubber rolling cylinder, and rotating grooves are respectively provided on the outer walls at both ends of the rubber rolling cylinder, and an accommodating cavity is provided inside the rubber rolling cylinder, and the two ends of the accommodating cavity are respectively connected to the two rotating grooves, and a plurality of gluing holes are provided on the outer wall of the rubber rolling cylinder, and the plurality of gluing holes are distributed in a linear array, and the gluing holes are connected to the accommodating cavity.

[0013] Optionally, a glue injection cylinder is fixedly connected to the top outer wall of the second skeleton, and a first pipe and a second pipe are fixedly connected to the end wall of the glue injection cylinder away from the first abutment block, a first chamber is opened inside the end of the glue injection cylinder away from the first abutment block, a second chamber is opened in the middle of the glue injection cylinder, and a third chamber is opened inside the end of the glue injection cylinder away from the first pipe.

[0014] Optionally, a first avoidance hole is provided on the inner wall of the first chamber close to the second chamber, a second avoidance hole is provided on the inner wall of the second chamber close to the third chamber, and an air inlet pipe and an air outlet pipe are fixedly connected to the outer wall of the injection cylinder, the air inlet pipe is connected to the inner wall of one end of the second chamber close to the first chamber, and the air outlet pipe is connected to the inner wall of one end of the second chamber close to the third chamber.

[0015] Optionally, a first piston is slidably connected to the inner wall of the first chamber, a second piston is slidably connected to the inner wall of the second chamber, a push rod is fixedly connected to the outer wall of the second piston close to the third chamber, an end of the push rod away from the second piston is fixedly connected to a second abutment block, an end of the second piston is fixedly connected to the outer wall of the third chamber close to one end of the first spring, and a second spring is fixedly connected to the inner wall of the third chamber close to the second chamber.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, the scraping assembly not only scrapes away dust or debris from the print plate, preventing it from affecting the workpiece being printed by the 3D printer, but also directs the scraped dust or debris into a storage drawer for easy later cleaning, thereby improving the worker's work efficiency. Furthermore, after scraping away dust or debris from the print plate, the top outer wall of the print plate can be coated with glue, allowing the printed workpiece to adhere better to the print plate, preventing warping of the workpiece and thereby improving the print quality.

[0018] By integrating a guide protrusion, a blocking plate, a collection funnel, and a storage drawer within the scraper assembly, the guide protrusion and the blocking plate work together to quickly position the printing plate. The curved outer wall of the guide protrusion also guides dust or debris into the collection funnel, where it falls into the storage drawer. Furthermore, the storage drawer can be pulled out for easy cleaning of dust or debris.

[0019] By arranging a scraper plate, a C-shaped elastic plate, a baffle, and a sliding protrusion within the scraper assembly, dust or residue on the printing plate can be scraped off. Furthermore, the dust or residue scooped onto the scraper plate and C-shaped elastic plate can be poured into a collection hopper under the guidance of the sliding guide groove. The baffle prevents dust or residue from sliding off the sides of the scraper plate during the scraping process.

[0020] By arranging a rubber roller, a rubber injection cylinder, a rubber injection hole, a first piston, a second piston, a first abutment block and a second abutment block in the scraping assembly, not only can the glue be evenly applied to the printing plate after the scraper scrapes off the dust or residue on the printing plate, but also the first piston can be continuously pushed along the inner wall of the first chamber toward the direction of the second pipe during the process of the scraper scraping off the dust or residue on the printing plate, thereby continuously replenishing glue for the accommodating chamber opened in the rubber roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the 3D printing device for recycling waste plastics;

[0023] Figure 2 An enlarged schematic diagram of the three-dimensional structure of the support table, workbench and collection funnel;

[0024] Figure 3 An enlarged schematic diagram of the three-dimensional structure for the support table and workbench;

[0025] Figure 4 This is an enlarged three-dimensional structural diagram of the brushless motor, sliding rod, C-shaped elastic plate and shovel plate;

[0026] Figure 5 It is an enlarged three-dimensional structural diagram of the C-shaped elastic plate, shovel plate, glue injection cylinder and sliding rod;

[0027] Figure 6 It is a half-section enlarged three-dimensional structural diagram of the C-shaped elastic plate, shovel plate, glue injection cylinder and sliding rod;

[0028] Figure 7 for Figure 6 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0029] Figure 8 for Figure 6 The enlarged three-dimensional structure diagram at B in the middle;

[0030] Figure 9 This is an enlarged three-dimensional structural diagram of the rubber roller;

[0031] Figure 10 It is a schematic diagram of the enlarged three-dimensional structure of the rubber roller.

[0032] Reference numerals:

[0033] 1. Printer body; 101. Support table; 102. Storage chamber; 103. Storage drawer; 104. Collection funnel; 105. Print plate; 2. Workbench; 201. Guide protrusion; 202. Blocking plate; 203. Sliding guide groove; 204. First support plate; 205. First abutment block; 206. Second support plate; 207. Sliding groove; 208. Brushless motor; 209. Rotating gear; 3. Sliding rod; 301. Sliding tooth; 302. First frame; 303. Second frame; 304. Connecting plate; 305. C-shaped elastic plate; 306. Shovel plate; 307 , baffle; 308, sliding protrusion; 4, rubber roller; 401, rotating groove; 402, accommodating chamber; 403, glue coating hole; 404, rotating protrusion; 405, avoidance groove; 5, glue injection cylinder; 501, first chamber; 502, second chamber; 503, third chamber; 504, first piston; 505, second piston; 506, push rod; 507, first spring; 508, second spring; 509, first avoidance hole; 510, second avoidance hole; 511, first pipe; 512, second pipe; 513, air inlet pipe; 514, air outlet pipe; 6, second abutment block.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The following describes in detail a 3D printing device for recycling waste plastics provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0036] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0037] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0038] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0039] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0040] like Figures 1 to 10As shown, an embodiment of the present invention provides a 3D printing device for recycling waste plastics, including a printer body 1, the bottom of the printer body 1 is fixedly connected to a support table 101, the support table 101 consists of three parts: a metal cuboid and two "T"-shaped metal plates, wherein the two "T"-shaped metal plates are symmetrically fixedly connected to the outer walls on both sides of the bottom of the metal cuboid, a storage cavity 102 is opened on the outer wall of one side of the support table 101, the storage cavity 102 is a rectangular trough, and a storage drawer 103 is slidably connected to the inner wall of the storage cavity 102, the storage drawer 103 is a metal rectangular box with an opening at the top, the storage drawer 103 is used to collect dust or residues, the storage drawer 103 can be removed by pulling, and the dust or residues in the storage drawer 103 can be cleaned; a scraping component, the scraping component is used to scrape dust or residues on the printing plate 105, and the scraping component is connected to the support table 101.

[0041] The present application provides a scraping assembly that not only scrapes away dust or residue from the printing plate 105, preventing the dust or residue from affecting the workpiece printed by the 3D printer, but also directs the scraped dust or residue into the storage drawer 103 for easy later cleaning, thereby improving the work efficiency of the staff. In addition, after scraping away the dust or residue from the printing plate 105, the top outer wall of the printing plate 105 can be coated with glue to ensure that the printed workpiece adheres better to the printing plate 105, preventing the workpiece from warping, thereby improving the print quality of the workpiece.

[0042] As an implementation method in this embodiment, Figures 1 to 10As shown, the scraping assembly includes a workbench 2, which is fixedly connected to the middle position of the top outer wall of the support table 101, wherein the workbench 2 is in an inverted "U" shape and is made of metal. The workbench 2 can provide support for the printing plate 105. A collecting funnel 104 is fixedly connected to the outer wall of the top of the support table 101 near the workbench 2. The collecting funnel 104 consists of two parts: a hollow metal step and a hollow rectangular parallelepiped, and the collecting funnel 104 is connected to the inner wall of the storage cavity 102, so the collecting funnel 104 can guide dust or residues into the storage drawer 103. A guide protrusion 201 is fixedly connected to the outer wall of the top of the workbench 2 near the collecting funnel 104. The guide protrusion 201 is in the shape of a quarter metal semi-cylinder. A blocking plate 202 is fixedly connected to one side of the top outer wall of the workbench 2. The blocking plate 202 is a metal straight plate. A blocking plate 202 is opened on the middle outer wall There is a sliding guide groove 203, which consists of a rectangular straight groove and a straight groove inclined toward the collecting funnel 104. The outer wall of the workbench 2 close to the blocking plate 202 is fixedly connected to a first support plate 204. The first support plate 204 is an "L"-shaped metal plate. The end of the first support plate 204 away from the workbench 2 is fixedly connected to a first abutment block 205. The first abutment block 205 consists of a metal cuboid and a metal triangular prism, and the part of the metal triangular prism is located at the end of the first abutment block 205 close to the workbench 2. The above structural arrangement, with the cooperation of the guide protrusion 201 and the blocking plate 202, can quickly position the printing plate 105. Among them, the guide protrusion 201 has a curved outer wall on one side, which can also guide dust or residue to the collecting funnel 104. The dust or residue falls into the storage drawer 103 under the guidance of the collecting funnel 104.

[0043] In this embodiment, if Figures 1 to 7As shown, a second support plate 206 is fixedly connected to the outer wall of the workbench 2 away from the collecting funnel 104. The second support plate 206 is an "L"-shaped metal plate. A sliding groove 207 is provided on the outer wall of the second support plate 206 away from the workbench 2. The sliding groove 207 is a square groove body. A sliding rod 3 is slidably connected to the inner wall of the sliding groove 207. The sliding rod 3 is a rectangular metal column. A plurality of sliding teeth 301 are provided on the sliding rod 3. The plurality of sliding teeth 301 are distributed in a linear array. The sliding teeth 301 are metal triangular prisms, and the matching profile between the sliding rod 3 and the sliding teeth 301 is adapted to the profile of the sliding groove 207. Therefore, the sliding rod 3 can slide on the inner wall of the sliding groove 207. A brushless motor 208 is fixedly connected to the outer wall of the top of the workbench 2 near the second support plate 206. The top of the brushless motor 208 It is fixedly connected with a rotating gear 209. The brushless motor 208 and the rotating gear 209 are both disclosed in the prior art, so they are not described in detail. The tooth groove on the outer wall of the rotating gear 209 is adapted to the profile of the sliding tooth 301, so the rotating gear 209 is engaged with the sliding rod 3. When the brushless motor 208 rotates clockwise, the rotating gear 209 rotates clockwise under the drive of the brushless motor 208, and drives the sliding rod 3 to slide along the inner wall of the sliding groove 207 toward the workbench 2. Conversely, when the brushless motor 208 rotates counterclockwise, the rotating gear 209 rotates counterclockwise under the drive of the brushless motor 208, and drives the sliding rod 3 to slide along the inner wall of the sliding groove 207 away from the workbench 2. Such an arrangement can drive the sliding rod 3 to slide by the brushless motor 208.

[0044] The end of the sliding rod 3 close to the workbench 2 is fixedly connected to the first frame 302, the first frame 302 is a "U"-shaped metal plate, both ends of the first frame 302 are fixedly connected to the same second frame 303, the second frame 303 is a "U"-shaped metal plate, the second frame 303 is fixedly connected to the outer wall of the side away from the first frame 302 with two connecting plates 304, the two connecting plates 304 are symmetrical about the center of the second frame 303, the connecting plates 304 are rectangular metal plates, the two connecting plates 304 are fixedly connected to the same C-shaped elastic plate 305, the C-shaped elastic plate 305 is a "C"-shaped metal plate, when the C-shaped elastic plate 305 is subjected to force, it will bend along its The shovel plate 306 is a metal plate with an arc at one end, and an inclined surface is provided on the end of the shovel plate 306 away from the C-shaped elastic plate 305. When the brushless motor 208 rotates clockwise, the shovel plate 306 can scrape off the dust or residue on the printing plate 105. Baffles 307 are symmetrically fixedly connected to the two sides of the top outer wall of the shovel plate 306. The baffle 307 is a metal plate with an arc at one end close to the C-shaped elastic plate 305. The setting of the baffle 307 can prevent dust or residue from sliding out from both sides of the shovel plate 306 during the process of scraping off dust or residue.

[0045] The baffle 307 on the side of the shovel plate 306 close to the blocking plate 202 has a sliding protrusion 308 fixedly connected to the outer wall of the side close to the blocking plate 202. The sliding protrusion 308 is composed of two metal cylinders with different diameters. The metal cylinder with a smaller diameter is located at the end of the sliding protrusion 308 close to the baffle 307, and the overall contour is a "convex" shape that matches the inner wall contour of the sliding guide groove 203. Therefore, the sliding protrusion 308 can slide on the inner wall of the sliding guide groove 203. When the brushless motor 208 rotates clockwise, it will drive the rotating gear 209 to rotate clockwise and drive the sliding rod 3 to slide along the inner wall of the sliding groove 207 toward the workbench 2, which will push the first frame 302, the second frame 303 and the connecting plate 304 to displace, and the C-shaped elastic plate 305 will follow the connecting plate 304 to displace in the direction of the guide protrusion 201. The shovel plate 306 will come into contact with the top outer wall of the printing plate 105 under the drive of the C-shaped elastic plate 305, and scrape the dust or residue on the printing plate 105 toward the collecting funnel 104. At the same time, the sliding protrusion 308 will slide along the inner wall of the sliding guide groove 203 toward the collecting funnel 104, and drive the shovel plate 306 to tilt toward the collecting funnel 104 under the guidance of the inclined end of the sliding guide groove 203. At this time, the C-shaped elastic plate 305 will be deformed along its bending direction under the force, and the dust or residue on the shovel plate 306 and the C-shaped elastic plate 305 will be poured into the collecting funnel 104. The above structural arrangement can not only scrape off the dust or residue on the printing plate 105, but also pour the dust or residue on the shovel plate 306 and the C-shaped elastic plate 305 into the collecting funnel 104 under the guidance of the sliding guide groove 203.

[0046] In this embodiment, if Figures 6 to 10As shown, rotating protrusions 404 are symmetrically fixedly connected to the inner walls at both ends of the second skeleton 303. The rotating protrusion 404 is composed of two metal cylinders with different diameters, wherein the part of the metal cylinder with a smaller diameter is located at the end of the rotating protrusion 404 close to the second skeleton 303, and the overall outline is a "convex" shape. The rotating protrusion 404 on the second skeleton 303 away from the first support plate 204 has an avoidance groove 405 on its outer wall on the side close to the first support plate 204. The avoidance groove 405 is a circular groove body and passes through the outer wall of the second skeleton 303, so that glue can be injected into the accommodating cavity 402 through the avoidance groove 405. The two rotating protrusions 404 are rotatably connected to the same rubber roller 4. The rubber roller 4 is a plastic cylinder. The outer walls of the rubber roller 4 at both ends are respectively provided with rotating grooves 401. The rotating groove 401 is a "convex" circular groove body. The inner wall contour of the rotating groove 401 is adapted to the outer wall contour of the rotating protrusion 404, so the rubber roller 4 can rotate on the outer wall of the rotating protrusion 404. A accommodating chamber 402 is provided inside the rubber roller 4. The accommodating chamber 402 is a circular groove body, and the two ends of the accommodating chamber 402 are respectively connected to the two rotating grooves 401. Glue application holes 403 are provided on the outer wall of the rubber roller 4. The glue application holes 403 are distributed in a linear array. The glue application holes 403 are circular groove bodies, and the glue application holes 403 are connected to the accommodating chamber 402. The glue in the accommodating chamber 402 can flow out from the glue application holes 403, and the rubber roller 4 can evenly apply the glue flowing out of the glue application holes 403 to the top outer wall of the printing plate 105 during the rolling process. With the above structural arrangement, the glue can be evenly applied to the printing plate 105 after the shovel plate 306 scrapes off the dust or residue on the printing plate 105.

[0047] In this embodiment, if Figure 2 and Figures 4 to 7As shown, the top outer wall of the second skeleton 303 is fixedly connected with a glue injection cylinder 5, which is a metal cylinder. A first chamber 501 is provided inside the end of the glue injection cylinder 5 away from the first abutting block 205, and the first chamber 501 is a cylindrical trough body. A second chamber 502 is provided in the middle of the glue injection cylinder 5, and the second chamber 502 is a cylindrical trough body. A third chamber 503 is provided inside the end of the glue injection cylinder 5 away from the first pipe 511, and the third chamber 503 is a cylindrical trough body, and passes through the end of the glue injection cylinder 5 close to the first abutting block 205. A first avoidance hole 509 is provided on the inner wall of the first chamber 501 close to the second chamber 502, and the first avoidance hole 509 is a circular trough body. The first chamber 501 and the second chamber 502 are connected through the first avoidance hole 5 09 are connected, a second avoidance hole 510 is opened on the inner wall of the second chamber 502 near the third chamber 503, and the second avoidance hole 510 is a circular groove. The second chamber 502 and the third chamber 503 can be connected through the second avoidance hole 510, and the end wall of the glue injection cylinder 5 away from the first abutment block 205 is fixedly connected with a first pipe 511 and a second pipe 512, wherein the first pipe 511 is an "L"-shaped circular metal pipe, and the second pipe 512 is a "C"-shaped circular metal pipe, and the first pipe 511 and the second pipe 512 are both connected to the first chamber 501, and a one-way valve is installed on the inner wall of the first pipe 511 and the second pipe 512. The one-way valve is disclosed in the prior art, so it is not described in detail. Under the action of the one-way valve, glue can pass The air flows into the first chamber 501 through the first pipe 511 and then flows out from the second pipe 512. The outer wall contour of the second pipe 512 is adapted to the inner wall contour of the avoidance groove 405. Therefore, the end of the second pipe 512 away from the glue injection cylinder 5 can be plugged into the inner wall of the avoidance groove 405. The outer wall of the glue injection cylinder 5 is fixedly connected with an air inlet pipe 513 and an air outlet pipe 514. The air inlet pipe 513 and the air outlet pipe 514 are both circular metal tubes. The air inlet pipe 513 is connected to the inner wall of one end of the second chamber 502 close to the first chamber 501, and the air outlet pipe 514 is connected to the inner wall of one end of the second chamber 502 close to the third chamber 503. A one-way valve is installed on the inner wall of the air inlet pipe 513. Under the action of the one-way valve, gas can pass through the air inlet pipe 513. After entering the second chamber 502, a first piston 504 is slidably connected to the inner wall of the first chamber 501, and a second piston 505 is slidably connected to the inner wall of the second chamber 502. The first piston 504 and the second piston 505 are both composed of three parts: a plastic circular plate and two semicircular rubber rings. A push rod 506 is fixedly connected to the outer wall of the second piston 505 close to the third chamber 503. The push rod 506 is a plastic cylinder. The outer wall profile of the push rod 506 is adapted to the inner wall profile of the second avoidance hole 510, so the push rod 506 can slide on the inner wall of the second avoidance hole 510. The end of the push rod 506 away from the second piston 505 is fixedly connected to a second abutment block 6. The second abutment block 6 is composed of two parts: a metal cuboid and a metal triangular prism.The metal triangular prism portion is located at one end of the second abutment block 6 close to the first abutment block 205. One end of the first spring 507 is fixedly connected to the outer wall of the second piston 505 close to the third chamber 503. The other end of the first spring 507 is fixedly connected to the inner wall of the second chamber 502 close to the third chamber 503. A second spring 508 is fixedly connected to the inner wall of the end of the third chamber 503 close to the second chamber 502. The end of the second spring 508 away from the second piston 505 is fixedly connected to the outer wall of the end of the second abutment block 6 close to the second chamber 502. The first spring 507 and the second spring 508 are both disclosed in the prior art and will not be described in detail. When the first spring 507 and the second spring 508 are subjected to force, they will deform along their respective bending directions.

[0048] When the second abutment block 6 is subjected to the abutment pressure of the first abutment block 205, the second abutment block 6 will be displaced toward the first chamber 501. Driven by the second abutment block 6, the push rod 506 will move along the inner wall of the second avoidance hole 510 toward the first chamber 501. At this time, the second spring 508 is stressed and deformed along its bending direction. At the same time, driven by the push rod 506, the second piston 505 slides along the inner wall of the second chamber 502 toward the first chamber 501. The gas in the second chamber 502 enters the first chamber 501 through the first avoidance hole 509, pushing The first piston 504 slides along the inner wall of the first chamber 501 toward the second pipe 512. At this time, the C-shaped elastic plate 305 is stressed and deformed along its bending direction. The glue in the first chamber 501 is pushed into the second pipe 512 by the first piston 504, and under the guidance of the second pipe 512, the glue is replenished into the accommodating chamber 402 opened in the rubber roller 4 until the second abutting block 6 no longer abuts the first abutting block 205. Under the action of the elasticity of the first spring 507 and the second spring 508, the deformation is restored and the second abutting block 6 is pushed back to its original position. At this time, the second abutting block 6 drives the push The rod 506 slides along the inner wall of the second avoidance hole 510 in the direction away from the first chamber 501, and drives the second piston 505 to reset under the elastic action of the first spring 507 itself. At this time, during the reset process of the second piston 505, gas will be sucked into the second chamber 502 through the intake pipe 513. As the scraping is continuously performed, the second piston 505 will continuously push the gas into the first chamber 501 through the first avoidance hole 509, thereby continuously using the gas to push the first piston 504 along the inner wall of the first chamber 501 toward the direction of the second pipe 512, thereby replenishing the rubber roller 4. Filling with glue: When the glue in the first chamber 501 is squeezed out, glue can be poured into the first chamber 501 through the first pipe 511. As the glue continues to be poured in, the glue will push the first piston 504 to slide along the inner wall of the first chamber 501 toward the second abutment block 6. The first piston 504 will push the gas in the first chamber 501 into the second chamber 502 through the first avoidance hole 509, and push the second piston 505 to slide along the inner wall of the second chamber 502 toward the first abutment block 205, causing the first spring 507 to deform in the direction of its bending under the force. As the glue continues to be injected, the second piston 505 slides to the end of the second chamber 502 near the third chamber 503, exposing the air outlet pipe 514, and the gas can flow out from the air outlet pipe 514 until the glue pushes the first piston 504 to the inner wall of the end of the first chamber 501 near the second chamber 502.At this time, there is no gas pushing the second piston 505, and the first spring 507 is no longer under stress. It recovers its deformation under the action of its own elasticity, pushing the second piston 505 to return to its original position and covering the air outlet pipe 514. The above structural arrangement can continuously push the first piston 504 along the inner wall of the first chamber 501 toward the second pipe 512 while the scraper is scraping dust or residue on the printing plate 105, thereby continuously replenishing glue into the accommodating chamber 402 opened in the rubber roller 4.

[0049] The working principle of the technical solution provided by the present invention is as follows:

[0050] During use, the printing plate 105 is first placed on the workbench 2. Under the limiting action of the guide protrusion 201 and the blocking plate 202, the printing plate 105 can be quickly positioned. Then the brushless motor 208 is started. When the brushless motor 208 rotates clockwise, the rotating gear 209 also rotates clockwise under the drive of the brushless motor 208, and drives the sliding rod 3 to slide along the inner wall of the sliding groove 207 toward the workbench 2. This pushes the first skeleton 302, the second skeleton 303 and the connecting plate 304 to move. The C-shaped elastic plate 305 follows the connecting plate 304 to move toward the guide protrusion 201. Driven by the C-shaped elastic plate 305, the shovel plate 306 contacts the top outer wall of the printing plate 105 and scrapes the dust or residue on the printing plate 105 toward the collection funnel 104. At the same time, the sliding protrusion 308 slides along the inner wall of the sliding guide groove 203 toward the collection funnel 104, and under the guidance of the inclined end of the sliding guide groove 203, it drives the shovel plate 306 to tilt into the collection funnel 104. At this time, the C-shaped elastic plate 305 is deformed along its bending direction under the force, and the dust or residue on the shovel plate 306 and the C-shaped elastic plate 305 is poured into the collection funnel 104. At the same time, the rubber roller 4 is attached to the top outer wall of the printing plate 105, and the glue in the accommodating cavity 402 flows out from the glue application hole 403 and is evenly applied to the top outer wall of the printing plate 105 during the rolling process of the rubber roller 4. After the glue is applied, the 3D printer can be started. After the waste plastic is melted in the furnace, it is transported to the nozzle of the 3D printer through a pipe to print the workpiece.

[0051] During the process of scraping dust or residue off the printing plate 105, when the second abutment block 6 is subjected to the abutment pressure of the first abutment block 205, the second abutment block 6 is displaced toward the first chamber 501. Driven by the second abutment block 6, the push rod 506 moves along the inner wall of the second avoidance hole 510 toward the first chamber 501. At this time, the second spring 508 is deformed along its bending direction under the force. At the same time, the second piston 505 is driven by the push rod 506 to slide along the inner wall of the second chamber 502 toward the first chamber 501. The gas in the second chamber 502 enters the first chamber 501 through the first avoidance hole 509, pushing the first piston 504 to slide along the inner wall of the first chamber 501 toward the second pipe 512. At this time, the C-shaped elastic plate 305 is deformed along its bending direction under the force. The glue in the first chamber 501 is pushed into the second conduit 512 by the first piston 504. Guided by the second conduit 512, the glue is replenished in the receiving chamber 402 within the rubber roller 4 until the second abutment block 6 no longer contacts the first abutment block 205. Under the elasticity of the first and second springs 507 and 508, they recover their deformation and push the second abutment block 6 back into position. At this point, the second abutment block 6 drives the push rod 506 to slide along the inner wall of the second avoidance hole 510 away from the first chamber 501. Under the elasticity of the first spring 507, the second piston 505 is reset. During the reset process of the second piston 505, gas is drawn into the second chamber 502 through the air inlet pipe 513. As the scraping is continued, the second piston 505 will continuously push the gas into the first chamber 501 through the first avoidance hole 509, thereby continuously using the gas to push the first piston 504 along the inner wall of the first chamber 501 toward the second pipe 512 to replenish glue for the rubber roller 4.

[0052] After the glue in the first chamber 501 is squeezed out, glue can be poured into the first chamber 501 through the first pipe 511. As the glue is continuously poured in, the glue pushes the first piston 504 to slide along the inner wall of the first chamber 501 toward the second abutment block 6. The first piston 504 pushes the gas in the first chamber 501 into the second chamber 502 through the first avoidance hole 509, and pushes the second piston 505 to slide along the inner wall of the second chamber 502 toward the first abutment block 205, causing the first spring 507 to be deformed along its bending direction under force. As the glue is continuously injected, the second piston 505 slides to the end of the second chamber 502 close to the third chamber 503, exposing the air outlet pipe 514, and the gas can flow out from the air outlet pipe 514 until the glue pushes the first piston 504 to the inner wall of the end of the first chamber 501 close to the second chamber 502. At this time, there is no gas pushing the second piston 505 , and the first spring 507 is no longer under stress. It recovers its deformation under the action of its own elasticity, pushing the second piston 505 to return to its original position and covering the gas outlet pipe 514 .

[0053] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A 3D printing device for recycling waste plastics, characterized in that: The printer comprises a body, the bottom of which is fixedly connected to a support table, a storage cavity is formed on an outer wall of one side of the support table, and a storage drawer is slidably connected to an inner wall of the storage cavity; A scraping assembly, the scraping assembly is used to scrape dust or residual material on the printing plate, and the scraping assembly is connected to the support table; The scraping assembly includes a workbench, which is fixedly connected to the middle position of the outer wall of the top of the support table, wherein the workbench is "U"-shaped, a collecting funnel is fixedly connected to the outer wall of the top of the support table near the workbench, and a guide protrusion is fixedly connected to the outer wall of the top of the workbench near the collecting funnel; A second support plate is fixedly connected to the outer wall of the workbench on the side away from the collecting funnel, a sliding groove is provided on the outer wall of the second support plate on the end away from the workbench, a sliding rod is slidably connected to the inner wall of the sliding groove, and a plurality of sliding teeth are provided on the sliding rod, wherein the plurality of sliding teeth are distributed in a linear array; A brushless motor is fixedly connected to the outer wall of the top of the workbench close to the second support plate, and a rotating gear is fixedly connected to the top of the brushless motor. One end of the sliding rod close to the workbench is fixedly connected to the first frame, and both ends of the first frame are fixedly connected to the same second frame. Two connecting plates are fixedly connected to the outer wall of the second frame away from the first frame. The two connecting plates are symmetrical about the center of the second frame, and the two connecting plates are fixedly connected to the same C-shaped elastic plate; A glue injection cylinder is fixedly connected to the top outer wall of the second frame, a first pipe and a second pipe are fixedly connected to the end wall of the glue injection cylinder away from the first abutment block, a first chamber is defined in the interior of one end of the glue injection cylinder away from the first abutment block, a second chamber is defined in the middle of the glue injection cylinder, and a third chamber is defined in the interior of one end of the glue injection cylinder away from the first pipe; A first avoidance hole is formed on the inner wall of the first chamber close to the second chamber, a second avoidance hole is formed on the inner wall of the second chamber close to the third chamber, an air inlet pipe and an air outlet pipe are fixedly connected to the outer wall of the injection cylinder, the air inlet pipe is connected to the inner wall of one end of the second chamber close to the first chamber, and the air outlet pipe is connected to the inner wall of one end of the second chamber close to the third chamber; A first piston is slidably connected to the inner wall of the first chamber, a second piston is slidably connected to the inner wall of the second chamber, a push rod is fixedly connected to the outer wall of the second piston close to the third chamber, an end of the push rod away from the second piston is fixedly connected to a second abutment block, a first spring is fixedly connected to the outer wall of the second piston close to the third chamber, and a second spring is fixedly connected to the inner wall of one end of the third chamber close to the second chamber.

2. The 3D printing device for recycling waste plastics according to claim 1, characterized in that: A blocking plate is fixedly connected to one side of the top outer wall of the workbench, a sliding guide groove is provided on the middle outer wall of the blocking plate, a first support plate is fixedly connected to the outer wall of the workbench close to the blocking plate, and a first abutment block is fixedly connected to the end of the first support plate away from the workbench.

3. The 3D printing device for recycling waste plastics according to claim 2, characterized in that: The end of the C-shaped elastic plate away from the connecting plate is fixedly connected to a shovel plate, and baffles are symmetrically fixedly connected to both sides of the outer wall of the top of the shovel plate, wherein the baffle on the side of the shovel plate close to the blocking plate has a sliding protrusion fixedly connected to the outer wall on the side close to the blocking plate.

4. The 3D printing device for recycling waste plastics according to claim 2, characterized in that: Rotating protrusions are symmetrically fixedly connected to the inner walls at both ends of the second skeleton, and the rotating protrusion on the second skeleton away from the first support plate is provided with an avoidance groove on the outer wall on the side close to the first support plate. The two rotating protrusions are rotatably connected to the same rubber rolling barrel, and rotating grooves are respectively provided on the outer walls at both ends of the rubber rolling barrel. An accommodating cavity is provided inside the rubber rolling barrel, and the two ends of the accommodating cavity are respectively connected to the two rotating grooves. A plurality of gluing holes are provided on the outer wall of the rubber rolling barrel, and the plurality of gluing holes are distributed in a linear array, and the gluing holes are connected to the accommodating cavity.

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