Used sand cleaning and recycling equipment suitable for sand mold additive manufacturing equipment
Through the old sand cleaning equipment integrating sand cleaning equipment, old sand loading equipment, vibrating screening machine and fan, the problem of insufficient recycling of old sand in traditional sand cleaning equipment is solved, efficient cleaning and recycling of old sand is achieved, production costs are reduced, and it is suitable for industrial workshops of large-scale sand additive manufacturing equipment.
Patent Information
- Application Number
- CN202421860383.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional sand cleaning devices lack old sand recycling links, resulting in large waste of raw materials, especially in large sand-type 3D printers and industrial workshops, which cannot meet the needs of efficient and convenient cleaning.
An old sand cleaning and recycling equipment including sand cleaning device, old sand feeding device, vibrating screening machine and fan is designed to achieve efficient cleaning and recycling of old sand through automated processes, including sand cleaning platform, sand drop trough shell, sand transportation mechanism, vibrating screening and integrated use of fan.
It realizes efficient cleaning and recycling of old sand, reduces production costs, and is suitable for industrial workshops of large-scale sand additive manufacturing equipment, improving the processing volume and convenience of old sand.
Smart Images
Figure CN223056653U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, in particular to an old sand cleaning and recycling device applicable to sand mold additive manufacturing equipment. Background Art
[0002] 3DP technology is a technology that constructs objects by layer-by-layer bonding printing using powdered metal or non-metal and other bondable materials based on digital model files, and is widely used in technical fields such as mold manufacturing, industrial design, automobiles, aerospace, cultural and creative sculptures, etc. After completing 3D printing work, it is necessary to clean the unbonded powder material (i.e., floating old powder) from the printed model. For the industrialization workshop of sand mold additive manufacturing equipment, an efficient and convenient sand cleaning device is particularly important.
[0003] However, the traditional sand cleaning device lacks the link of old sand recycling, resulting in a large waste of raw materials. Using a vacuum cleaner to suck sand only meets the need to clean sand for small sand mold 3D printing machines, but for some large sand mold 3D printing machines and the industrialization workshop of sand mold additive manufacturing equipment, the amount of old sand is too large, which takes a long time and has a relatively low working efficiency. Summary of the Utility Model
[0004] Based on this, it is necessary to provide an old sand cleaning and recycling device applicable to sand mold additive manufacturing equipment that can efficiently and conveniently clean the old sand in the industrialization workshop of sand mold additive manufacturing equipment.
[0005] An old sand cleaning and recycling device applicable to sand mold additive manufacturing equipment includes a sand cleaning device, an old sand feeding device, a vibrating screen and a blower;
[0006] The sand cleaning device includes a sand cleaning frame, a sand cleaning platform, two sand dropping trough shells, a sand conveying mechanism corresponding to each sand dropping trough shell, and an old sand collection bin; the sand cleaning platform is arranged on the top of the sand cleaning frame and is provided with two sand dropping ports at intervals along the first direction; the two sand dropping trough shells are respectively arranged below the two sand dropping ports and are communicated with the sand dropping ports; the old sand collection bin is arranged at the lower side of the two sand dropping trough shells; the sand conveying mechanism is configured to be able to convey the old sand falling into the sand dropping trough shell to the old sand collection bin along the second direction intersecting with the first direction;
[0007] The old sand feeding device is configured to be able to convey the old sand in the old sand collection bin to the feed inlet of the vibrating screen; the discharge port of the vibrating screen is communicated with the air inlet of the blower; the air outlet of the blower is used to connect to the working box of the sand mold additive manufacturing equipment.
[0008] In one embodiment, the sand cleaning platform includes two cleaning plates and two sand retaining plates; the two cleaning plates are arranged at intervals along the first direction on the top of the sand cleaning frame; a sand dropping port is formed on each cleaning plate; the two sand retaining plates are arranged at intervals along the second direction; two ends of each sand retaining plate are respectively fixed on the upper surfaces of the two cleaning plates.
[0009] In one embodiment, a screen plate is installed at each sand dropping port.
[0010] In one embodiment, an upward-opening sand inlet is formed at the top of the used sand collecting tank; the sand conveying mechanism is a belt conveying mechanism; the belt conveying mechanism is arranged at the bottom corresponding to the sand dropping tank shell, and the conveying surface of the belt conveying mechanism serves as the bottom surface inside the sand dropping tank shell; the downstream end of the belt conveying mechanism extends directly above the sand inlet.
[0011] In one embodiment, an anti-static brush is arranged at the bottom of the downstream end of each belt conveying mechanism; the bristles of each anti-static brush are in contact with the conveying surface at the bottom of the downstream end of the corresponding belt conveying mechanism.
[0012] In one embodiment, a dust removal cover is further included; the dust removal cover is arranged at intervals directly above the sand cleaning platform and is configured to generate negative pressure to absorb the dust on the sand cleaning platform.
[0013] In one embodiment, the used sand feeding device includes a sand pumping pipeline and a vacuum feeder; two ends of the sand pumping pipeline are respectively communicated with the sand outlet of the used sand collecting bin and the feed inlet of the vacuum feeder; the discharge outlet of the vacuum feeder is communicated with the feed inlet of the vibrating screen.
[0014] In one embodiment, a used sand recycling frame is further included; the vacuum feeder, the vibrating screen and the fan are arranged on the used sand recycling frame in sequence from top to bottom; the sand pumping pipeline is arranged obliquely.
[0015] The above-mentioned used sand cleaning and recycling equipment for sand mold additive manufacturing equipment, when in use, the operator only needs to move the working box of the sand mold additive manufacturing equipment onto the sand cleaning platform and clean the used sand in the working cavity into the sand falling trough shells on both sides of the sand cleaning platform. Then, the used sand in the sand falling trough shells can be transported into the used sand collection bin for collection by the sand transportation mechanism, and then the used sand collected in the used sand collection bin can be fed into the vibrating screen by the used sand feeding device for vibrating screening, and the screened used sand can be reused under the action of the fan to achieve rapid cleaning of the used sand and recycling of the used sand. Therefore, the above-mentioned used sand cleaning and recycling equipment for sand mold additive manufacturing equipment is simple to operate, highly efficient and rapid in cleaning used sand, realizes the recycling of used sand, reduces production costs, has a large amount of used sand treatment, and can be applied to the industrial workshops of sand mold additive manufacturing equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 FIG. is a schematic structural diagram of the used sand cleaning and recycling equipment for sand mold additive manufacturing equipment in a preferred embodiment of the present invention;
[0017] Figure 2 is Figure 1 a schematic structural diagram of the sand cleaning device in the used sand cleaning and recycling equipment for sand mold additive manufacturing equipment shown.
[0018] Reference numerals: 100, used sand cleaning and recycling equipment for sand mold additive manufacturing equipment; 110, sand cleaning device; 111, sand cleaning frame; 112, sand cleaning platform; 1121, cleaning table board; 1122, sand retaining plate; 1123, screen plate; 113, sand falling trough shell; 114, sand transportation mechanism; 115, used sand collection bin; 116, anti-static brush; 120, used sand feeding device; 121, sand pumping pipeline; 122, vacuum feeder; 130, vibrating screen; 140, fan; 150, dust hood; 160, used sand recycling frame; 10, first direction; 20, second direction. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0021] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or an intermediate element may also exist. It can also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or one or more intermediate elements may also exist.
[0022] In the case of using "including", "having", and "comprising" described herein, unless explicit limiting terms are used, such as "only", "consisting of", etc., another component can also be added. Unless otherwise mentioned, terms in the singular form can include the plural form and should not be understood as having a quantity of one.
[0023] In addition, the drawings are not drawn to a scale of 1:1, and the relative sizes of the components are only drawn by way of example in the drawings and not necessarily to the true scale.
[0024] Figure 1 This is the structure of the used sand collection device applicable to the sand mold additive manufacturing equipment in an embodiment of the present utility model. For ease of description, the drawings only show the structures related to the embodiments of the present utility model.
[0025] Please refer to Figure 1 , the used sand cleaning and recycling device 100 applicable to the sand mold additive manufacturing equipment in the preferred embodiment of the present utility model includes a sand cleaning device 110, a used sand feeding device 120, a vibrating screen 130, and a blower 140.
[0026] The sand cleaning device 110 includes a sand cleaning frame 111, a sand cleaning platform 112, two sand falling trough shells 113, a sand conveying mechanism 114 corresponding to each sand falling trough shell 113, and an old sand collection bin 115. The sand cleaning platform 112 is arranged on the top of the sand cleaning frame 111 and is provided with two sand falling openings (not marked in the figure) at intervals along the first direction 10. The two sand falling trough shells 113 are respectively arranged below the two sand falling openings and are communicated with the sand falling openings. The old sand collection bin 115 is arranged at the lower side of the two sand falling trough shells 113. The sand conveying mechanism 114 is configured to be able to convey the old sand falling into the sand falling trough shell 113 to the old sand collection bin 115 along the second direction 20 intersecting with the first direction 10. When the sand cleaning device 110 is located on the horizontal plane, the first direction 10 and the second direction 20 are two mutually intersecting horizontal directions. Specifically, the first direction 10 and the second direction 20 can be perpendicular to each other or can be arranged in an intersecting manner at other angles. Among them, the sand conveying mechanism 114 can be a belt conveying mechanism, a screw feeding mechanism, etc.
[0027] The old sand feeding device 120 is configured to be able to convey the old sand in the old sand collection bin 115 to the feeding port of the vibrating screening machine 130. The discharge port of the vibrating screening machine 130 is communicated with the air inlet of the fan 140. The air outlet of the fan 140 is used to connect to the working box of the sand mold additive manufacturing equipment.
[0028] After the sand mold additive manufacturing equipment finishes printing, the working box of the sand mold additive manufacturing equipment is transported to the sand cleaning platform 112 through structures such as tracks. At this time, the working box is located at the position between the two sand falling openings. Then, the operator cleans the model old sand in the working box to clean the old sand into the sand falling openings on both sides of the sand cleaning platform 112; the old sand in the sand falling openings falls into the sand falling trough shell 113 under the action of its own gravity, and the sand conveying mechanism 114 is used to transport the old sand in the sand falling trough shell 113 to the old sand collection bin 115 for collection; the old sand feeding device 120 is used to feed the old sand collected in the old sand collection bin 115 into the vibrating screening machine 130, and the vibrating screening machine 130 is used to vibrate and screen these old sands, and then the screened old sands are reused under the action of the fan 140.
[0029] Therefore, for the above-mentioned old sand cleaning and recycling equipment 100 applicable to the sand mold additive manufacturing equipment, the operator only needs to complete the cleaning work of the model old sand in the working box, and the subsequent cleaning and recycling work are all automated, with simple operation, and the old sand cleaning is efficient and rapid, realizing the recycling of old sand to reduce production costs. At the same time, the old sand treatment volume is large, and it can be applicable to the industrial workshop of the sand mold additive manufacturing equipment.
[0030] In some embodiments, the sand cleaning platform 112 includes two cleaning plates 1121 and two sand retaining plates 1122. The two cleaning plates 1121 are arranged at intervals along the first direction 10 on the top of the sand cleaning frame 111. A sand dropping opening is formed on each cleaning plate 1121. The two sand retaining plates 1122 are arranged at intervals along the second direction 20. Two ends of each sand retaining plate 1122 are respectively fixed on the upper surfaces of the two cleaning plates 1121.
[0031] When the working box of the sand mold additive manufacturing equipment is transported onto the sand cleaning platform 112, the working box is located between the two sand retaining plates 1122. At this time, the sand retaining plates 1122 are used to prevent the old sand from falling out of the sand cleaning platform 112 during the sand cleaning process, which not only ensures the cleanliness of the surrounding working environment but also improves the recycling rate of the old sand.
[0032] In some embodiments, a screen plate 1123 is installed at each sand dropping opening. The screen plate 1123 covers the corresponding sand dropping opening. The screen plate 1123 is used to preliminarily screen out larger impurities in the old sand, ensure the smooth transportation of the subsequent old sand, and is beneficial to the screening effect of the subsequent old sand.
[0033] In some embodiments, the top of the old sand collection tank is formed with a sand inlet with an upward opening. The sand transportation mechanism 114 is a belt conveyor mechanism. The belt conveyor mechanism is arranged at the bottom of the corresponding sand dropping tank shell 113, and the conveying surface of the belt conveyor mechanism serves as the bottom surface inside the sand dropping tank shell 113. The downstream end of the belt conveyor mechanism extends directly above the sand inlet.
[0034] That is, the old sand entering the sand dropping tank shell 113 from the sand dropping opening will directly fall on the conveying surface of the belt conveyor mechanism. The belt conveyor mechanism operates to convey this old sand directly above the old sand collection bin 115, and under the action of the gravity of the old sand itself, it falls into the old sand collection bin 115 for collection. Therefore, setting the sand transportation mechanism 114 as a belt conveyor mechanism is beneficial to the cleaning and maintenance of the equipment in the later stage and the improvement of the old sand transportation efficiency.
[0035] Further, in some embodiments, an anti-static brush 116 is arranged at the bottom of the downstream end of each belt conveyor mechanism. The bristles of each anti-static brush 116 are in contact with the conveying surface at the bottom of the downstream end of the corresponding belt conveyor mechanism.
[0036] During the operation of the belt conveyor mechanism, especially when the old sand leaves the conveying surface at the downstream end of the belt conveyor mechanism, the anti-static brush 116 performs static elimination treatment on the conveying surface of the belt conveyor mechanism to eliminate static electricity and prevent the old sand from adhering to the belt conveyor mechanism due to static electricity, ensuring the safety and reliability of the old sand recycling process.
[0037] In some embodiments, the used sand cleaning and recycling device 100 applicable to sand mold additive manufacturing equipment further includes a dust removal hood 150. The dust removal hood 150 is spaced above the sand cleaning platform 112 and is configured to generate negative pressure to absorb the dust on the sand cleaning platform 112.
[0038] In practical applications, before cleaning the used sand of the sand mold, turn on the dust removal function of the dust removal hood 150 to quickly suck the dust generated during the cleaning process of the used sand of the sand mold into the dust removal hood 150 for dust removal treatment, which can effectively reduce the harm of dust to the physical health of operators during the sand cleaning process and improve the safety during the used sand cleaning and recycling process.
[0039] In some embodiments, the used sand feeding device 120 includes a sand pumping pipeline 121 and a vacuum feeder 122. Both ends of the sand pumping pipeline 121 are respectively communicated with the sand outlet of the used sand collection bin 115 and the feed inlet of the vacuum feeder 122. The discharge outlet of the vacuum feeder 122 is communicated with the feed inlet of the vibrating screen 130. Among them, the length and installation method of the sand pumping pipeline 121 can be selected according to the installation position between the used sand collection bin 115 and the vibrating screen 130.
[0040] The used sand feeding device 120 is set as the sand pumping pipeline 121 and the vacuum feeder 122, so that under the action of the vacuum negative pressure provided by the vacuum feeder 122, the used sand in the used sand collection bin 115 is sucked into the vibrating screen 130 for vibrating screening work, which is convenient and efficient, and the whole feeding process is carried out in a closed environment, reducing the probability of dust generation during the used sand recycling process, which is beneficial to improving the use safety of the above-mentioned used sand cleaning and recycling device 100 applicable to sand mold additive manufacturing equipment.
[0041] Of course, in other embodiments, the used sand feeding device 120 can also be a screw elevator, a belt conveyor mechanism, etc.
[0042] In some embodiments, the used sand cleaning and recycling device 100 applicable to sand mold additive manufacturing equipment further includes a used sand recycling frame 160. The vacuum feeder 122, the vibrating screen 130 and the fan 140 are arranged on the used sand recycling frame 160 in sequence from top to bottom. The sand pumping pipeline 121 is arranged obliquely.
[0043] In this way, the vacuum feeder 122, the vibrating screen 130 and the fan 140 are all centrally installed on the used sand recycling mechanism to form a whole, which not only reduces the floor area of the above-mentioned used sand cleaning and recycling device 100 applicable to sand mold additive manufacturing equipment, but also facilitates the on-site installation of the equipment.
[0044] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.
[0045] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. An old sand cleaning and recycling device applicable to sand mold additive manufacturing equipment, characterized in that, It includes a sand cleaning device, an old sand feeding device, a vibrating screen and a fan; The sand cleaning device includes a sand cleaning frame, a sand cleaning platform, two sand dropping trough shells, a sand conveying mechanism corresponding to each sand dropping trough shell, and an old sand collecting bin; the sand cleaning platform is arranged on the top of the sand cleaning frame and is provided with two sand dropping openings at intervals along a first direction; the two sand dropping trough shells are respectively arranged below the two sand dropping openings and are communicated with the sand dropping openings; the old sand collecting bin is arranged at the lower side of the two sand dropping trough shells; the sand conveying mechanism is configured to be able to convey the old sand falling into the sand dropping trough shell to the old sand collecting bin along a second direction intersecting the first direction; The old sand feeding device is configured to be able to convey the old sand in the old sand collecting bin to the feed inlet of the vibrating screen; the discharge outlet of the vibrating screen is communicated with the air inlet of the fan; the air outlet of the fan is used to connect to the working box of the sand mold additive manufacturing equipment.
2. The used sand cleaning and recycling equipment applicable to the sand mold additive manufacturing equipment according to claim 1, wherein The sand cleaning platform includes two cleaning plates and two sand retaining plates; the two cleaning plates are arranged at intervals along the first direction on the top of the sand cleaning frame; each cleaning plate is formed with the sand dropping opening; the two sand retaining plates are arranged at intervals along the second direction; both ends of each sand retaining plate are respectively fixed on the upper surfaces of the two cleaning plates.
3. The old sand cleaning and recycling equipment applicable to sand mold additive manufacturing equipment according to claim 1, characterized in that, A screen plate is installed at each sand dropping opening.
4. The old sand cleaning and recycling equipment applicable to sand mold additive manufacturing equipment according to claim 1, characterized in that, The top of the old sand collecting trough is formed with a sand inlet with an upward opening; the sand conveying mechanism is a belt conveying mechanism; the belt conveying mechanism is arranged at the bottom of the corresponding sand dropping trough shell, and the conveying surface of the belt conveying mechanism serves as the bottom surface in the sand dropping trough shell; the downstream end of the belt conveying mechanism extends to directly above the sand inlet.
5. The old sand cleaning and recycling equipment applicable to sand mold additive manufacturing equipment according to claim 4, wherein An anti-static brush is arranged at the bottom of the downstream end of each belt conveying mechanism; the bristles of each anti-static brush are in contact with the conveying surface at the bottom of the downstream end of the corresponding belt conveying mechanism.
6. The used sand cleaning and recycling equipment applicable to sand mold additive manufacturing equipment according to claim 1, wherein, It further includes a dust removal cover; the dust removal cover is arranged at intervals directly above the sand cleaning platform and is configured to be able to generate negative pressure to absorb the dust on the sand cleaning platform.
7. The used sand cleaning and recycling equipment applicable to sand mold additive manufacturing equipment according to claim 1, characterized in that, The old sand feeding device includes a sand pumping pipeline and a vacuum feeder; the two ends of the sand pumping pipeline are respectively communicated with the sand outlet of the old sand collecting bin and the feed inlet of the vacuum feeder; the discharge outlet of the vacuum feeder is communicated with the feed inlet of the vibrating screen.
8. The old sand cleaning and recycling equipment applicable to the sand mold additive manufacturing equipment according to claim 7, characterized in that, It further includes an old sand recycling frame; the vacuum feeder, the vibrating screen and the fan are arranged on the old sand recycling frame in sequence from top to bottom; the sand pumping pipeline is arranged obliquely.