A cleaning device for sand paving device of sand type 3D printer

Abstract

The present invention belongs to the technical field of 3D printers, and relates to a cleaning device for a sand paving device of a sand type 3D printer. Water is injected into an inner shaft through a water injector, and the water in the inner shaft flows to the outer shaft through two rows of through holes, and enters the water storage layer through the through holes on the outer shaft to keep the scrubbing object moist. The driving motor works, and the cleaning roller is driven to rotate through the transmission belt, and the scraping plate and the scrubbing object contact each other, so as to effectively wipe the black matter and other debris on the scraping plate, and the length of the scrubbing object and the scraping plate are matched, thereby improving the cleaning efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of 3D printers, and more specifically, relates to a cleaning device for a sand paving device of a sand type 3D printer. Background Art

[0002] At present, in the process of printing sand molds, the additives in the sand used for printing react with each other to form some black substances that are difficult to clean. These black substances will stick to the scraper plate of the sand paving machine during continuous printing. The smoothness of the scraper plate is particularly high during printing, so these black substances sticking to the scraper plate will directly cause abnormal sand paving of the sand paving machine. If the black substances are not handled in time, as their volume increases, these black substances may damage the sand surface during the operation of the sand paving machine, causing sand pulling; or even blocking the sand discharge port of the sand paving machine, resulting in no sand discharge from the sand paving machine and uneven sand paving surface. Whether sand is pulled or not, it will seriously affect the production of sand 3D printers, and even produce waste products. Summary of the invention

[0003] In view of the black matter formed on the scraping plate of the sand paving device of the sand type 3D printer during the operation of the sand type 3D printer, the present invention provides a cleaning device for the sand paving device of the sand type 3D printer, which can effectively remove the black matter and ensure the normal production of the product.

[0004] A cleaning device for a sand-laying device of a sand-type 3D printer, comprising a cleaning roller and a water injector; the cleaning roller is composed of an outer shaft, an inner shaft, a water storage layer, a scrubbing object, a left support plate and a right support plate; the outer shaft is hollow and a plurality of through holes are arranged on the side wall, the water storage layer is wrapped on the side wall of the outer shaft, and the scrubbing object is wrapped on the outside of the water storage layer; the two ends of the outer shaft are rotatably connected to the left support plate and the right support plate respectively; the inner shaft is hollow and two rows of through holes are arranged on the side wall, the two ends of the inner shaft pass through the two ends of the outer shaft and are respectively fixed on the left support plate and the right support plate, the other end of the inner shaft is connected to the water injector, and the water injector can inject water into the interior of the outer shaft.

[0005] Furthermore, a cleaning device for a sand-laying device of a sand-type 3D printer also includes a driving motor and a transmission belt; the driving motor is fixed to the left support plate, and one end of the outer shaft and the driving motor are drivably connected together by the transmission belt; the left support plate and the right support plate are provided with sealed bearings, and the outer shaft and the inner shaft are connected to the left support plate and the right support plate by cooperating with the sealed bearings; the left support plate and the right support plate are also provided with fixing frames, and both ends of the inner shaft are fixed to the fixing frames.

[0006] Furthermore, the lengths of the scrubbing object and the scraping board match.

[0007] Furthermore, the plurality of through holes provided on the side wall of the outer shaft are evenly distributed and are all covered by the water storage layer.

[0008] Furthermore, on the outer shaft, round pancake-shaped limit blocks are sealed at both ends of the water storage layer and the scrubbing object, and there is a round hole in the middle of the limit block. The limit block is sealed and sleeved on the outer shaft through the round hole. The limit block can limit the displacement of the water storage layer and the scrubbing object.

[0009] Furthermore, the outer shaft and the inner shaft are arranged horizontally, the two rows of through holes on the upper side wall of the inner shaft are located in the upper half of the inner shaft, and the two rows of through holes are symmetrical about the vertical plane where the axis of the inner shaft is located.

[0010] Further, the aquifer is a sponge.

[0011] Furthermore, the scrubbing object is water-absorbent and is a towel or felt.

[0012] Furthermore, the water injector can inject water into the outer shaft, and can control the water injection amount and water pressure.

[0013] The present invention provides a cleaning device for a sand-type 3D printer sand paving device. Water is injected into the inner shaft through a water injector. When the water level in the inner shaft reaches the height of two rows of through holes, water will flow relatively evenly from the two rows of through holes to the outer shaft. The water will be absorbed by the water storage layer through a number of through holes on the outer shaft to keep the scrubbing object moist. The motor works and drives the cleaning roller to rotate through the transmission belt. The scraping plate of the 3D printer and the scrubbing object contact each other, thereby effectively wiping the black matter and other debris on the scraping plate. The length of the scrubbing object matches the length of the scraping plate, thereby improving the cleaning efficiency. A limit block is set on the outer shaft to limit the displacement of the water storage layer and the scrubbing object, and effectively prevent the water in the water storage layer and the scrubbing object from penetrating to both sides, thereby improving the practicality and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An overall schematic diagram of a cleaning device for a sand paving device of a sand type 3D printer according to the present invention;

[0015] Figure 2 Figure 1 AA section view in;

[0016] Figure 3 A schematic diagram of the outer shaft structure of a cleaning device for a sand paving device of a sand type 3D printer according to the present invention;

[0017] Figure 4 A schematic diagram of the water injector side structure of a cleaning device for a sand paving device of a sand mold 3D printer according to the present invention;

[0018] Figure 5 A schematic diagram of the motor side structure of a cleaning device for a sand paving device of a sand mold 3D printer of the present invention.

[0019] Among them, 10-sand spreader; 11-scraper plate; 20-cleaning roller; 21-outer shaft; 211-pinhole; 22-water storage layer; 23-scrubbing object; 24-limiting block; 25-left support plate; 26-right support plate; 27-A sealed bearing; 28-B sealed bearing; 29-inner shaft; 291-through hole; 30-driving motor; 31-tensioning sleeve; 32-transmission belt; 32-belt 33-tensioning sleeve 34-synchronous belt; 40-connecting seat; 41-fixed frame; 50 water injector. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given 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, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0021] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] The cleaning device of the sand paving device of the sand type 3D printer is described below in conjunction with specific embodiments to further understand the concept of the present invention.

[0024] See also Figure 1-3The sand type 3D printer has a movable sand paving device 10, a horizontal scraper plate 11 is provided at the bottom of the sand paving device 10, and a cleaning station is provided below the movable range of the sand paving device 10, and a frame (not shown in the figure) is installed on the cleaning station. A cleaning device for a sand-laying device of a sand-type 3D printer, mainly comprising a cleaning roller 20 and a water injector; the cleaning roller is composed of an outer shaft 21, an inner shaft 29, a water storage layer 22, a scrubbing object 23, a left support plate 25 and a right support plate 26; the outer shaft 21 is hollow and a plurality of through holes are arranged on the side wall, the water storage layer 22 is wrapped on the side wall of the outer shaft 21, and the scrubbing object 23 is wrapped on the outside of the water storage layer 22; the two ends of the outer shaft 21 are rotatably connected to the left support plate 25 and the right support plate 26 respectively; the inner shaft 29 is hollow and two rows of through holes are arranged on the side wall, the two ends of the inner shaft 29 pass through the two ends of the outer shaft 21 and are respectively fixed on the left support plate 25 and the right support plate 26, the other end of the inner shaft 29 is connected to the water injector 50, and the water injector 50 can inject water into the interior of the outer shaft.

[0025] See also Figure 4-5 , a cleaning device for a sand-laying device of a sand-type 3D printer, further comprising a driving motor 30 and a transmission belt 32; the driving motor 30 is fixed on the left support plate 25, and one end of the outer shaft 21 and the driving motor 30 are drivably connected together by the transmission belt 32; the left support plate 25 and the right support plate 26 are provided with sealed bearings, and the outer shaft 21 and the inner shaft 29 are connected to the left support plate 25 and the right support plate 26 by cooperating with the sealed bearings, and the left support plate 25 and the right support plate 26 are also provided with a fixing frame 41, and the two ends of the inner shaft are fixed to the fixing frame. Two connecting seats 40 A connecting seat 40 is provided at the bottom sea of ​​the left support plate 25 and the right support plate 26, and the connecting seat 40 and the frame of the cleaning station are detachably fixed together.

[0026] In one embodiment of the present invention, the water storage layer 22 can store water, and is preferably a sponge, and the scrubbing material 23 is absorbent, and is preferably a towel or felt. The cleaning roller 20 is arranged as a whole at the cleaning station, and the water storage layer 22 and the scrubbing material 23 have the same length, and the length of the scrubbing material 23 is greater than or equal to the length of the scraping board 11, that is, the scrubbing material 23 can cover and scrub the entire scraping board 11 at one time. When the sanding device 10 moves to the top of the cleaning roller 20, the bottom surface of the scraping board 11 will squeeze the scrubbing material 23, that is, the horizontal height of the scrubbing material 23 is higher than the bottom surface of the scraping board 11. Please combine Figure 3 and Figure 4, the side wall of the outer shaft 21 is provided with a plurality of through holes, namely, pinholes 211. The inner shaft 29, the outer shaft 21 and the right support plate 26 are connected together through the B sealed bearing 27. On the other side of the right support plate 26, the water injector 50 is connected to the outer shaft 21, and water can be directly injected into the outer shaft 21 from one end of the outer shaft 21. The outer shaft 21 and the inner shaft 29 are arranged horizontally, and the two rows of through holes 291 arranged on the upper side wall of the inner shaft 29 are located in the upper half of the inner shaft 29, and the two rows of through holes 291 are symmetrical about the vertical plane where the axis of the inner shaft 29 is located. The pinholes 211 are evenly distributed on the outer shaft 21, and are distributed within the range wrapped by the water storage layer 22. The water storage layer 22 has good water permeability, which can ensure that the water flowing out of the pinholes 211 can be completely absorbed by the water storage layer 22, and then absorbed by the scrubbing object 23. In order to ensure that the water storage layer 22 can be firmly wrapped on the outer shaft 21, anti-skid measures can be taken on the outer wall of the outer shaft 21, such as grinding the outer wall of the outer shaft 21 to be rough or gluing the water storage layer 22 to the outer shaft 21 with glue. In order to prevent the water storage layer 22 and the scrubbing object 23 from sliding axially with the outer shaft 21, on the outer shaft 21, the water storage layer 22 and the scrubbing object 23 are sealed with round pancake-shaped limit blocks 24 at both ends, and the limit blocks 24 have a round hole in the middle. The limit blocks 24 are sealed and sleeved on the outer shaft 21 through the round hole. The limit blocks 24 can limit the displacement of the water storage layer 22 and the scrubbing object 23, and prevent water from seeping out from both sides of the water storage layer 22. The water injector 50 can effectively control the water injection amount and water pressure. The inner diameter of the outer shaft 21 and the number and aperture of the pinholes 211 can be set according to actual conditions.

[0027] In one embodiment of the present invention, the drive motor 30 is fixed to one side of the left support plate 25. One end of the outer shaft 21 and the left support plate 25 are connected together through the A sealed bearing 28. Transmission wheels are respectively installed on the part of the outer shaft 21 passing through the left support plate 25 and the rotating shaft of the drive motor 30. The two transmission wheels are installed with tension sleeves 31. The transmission belt 32 cooperates with the tension sleeve 31 so that when the drive motor 30 is working, the transmission belt 32 can drive the outer shaft 21 to rotate. The two ends of the inner shaft 29 are respectively fixed to two fixing brackets 41. The tension sleeve 31 can adjust the tightness of the transmission belt 32 to ensure a good kinetic energy transmission effect. The A sealed bearing 27 and the B sealed bearing 28 effectively prevent water from seeping out from the connection. The cross-section of the left support plate 25 and the right support plate 26 is designed to be an inverted T-shaped. A fixing bracket 41 is also vertically provided on one side of the bottom of the left support plate 25 and the right support plate 26. The two fixing brackets 41 are detachably connected to the left support plate and the right support plate, respectively.

[0028] In one embodiment of the present invention, in order to facilitate the disassembly and installation of a cleaning device for a sand paving device of a sand type 3D printer of the present invention, two connecting seats 40 are detachably connected to the left support plate 25 and the right support plate 26. The cross section of the connecting seat 40 is designed to be L-shaped and consists of two parts perpendicular to each other. Among them, one part of the two connecting seats 40 is fixed to the bottom of the left support plate 25 and the right support plate 26 with screws, and the other part is fixed to the frame of the printer with screws.

[0029] In one embodiment of the present invention, a cleaning device for a sand paving device of a sand type 3D printer works as follows: when the sand paving device 10 moves to the top of the cleaning roller 20, when the cleaning roller 20 contacts the scraping plate 11, the driving motor 30 works, and drives the cleaning roller 20 to rotate through the transmission belt 32, and the rotation direction of the cleaning roller 20 is opposite to the moving direction of the sand paving device 10. While the cleaning roller 20 rotates, the water injector 51 injects water into the inner shaft 29, and when the water level reaches the height of the two rows of through holes 291, the water flows out from the two rows of through holes 291 into the outer shaft 21, and then soaks the water storage layer through the pinhole 211 on the outer shaft 21. The water injection amount is controlled by the water injector, thereby controlling the water injection amount of the pinhole 211 into the water storage layer 22, thereby ensuring the wettability of the water storage layer 22 and the scrubbing object 23, thereby effectively wiping the black matter and other debris on the scraping plate 11. After the sanding device 10 moves over the cleaning roller 20, the cleaning roller stops rotating. When the sanding device 10 moves in the opposite direction and passes over the cleaning roller 20 again, the driving motor controls the cleaning roller 20 to rotate in the opposite direction, so as to ensure that the two are always in contact in the opposite direction. The sanding device 10 reciprocates once, and this process is one cleaning, and this cycle is repeated to clean the sanding device scraper 11.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning device for a sand paving device of a sand type 3D printer, characterized in that: It includes a cleaning roller, two connecting seats and a water injector; the cleaning roller is composed of an outer shaft, an inner shaft, a water storage layer, a scrubbing material, a left support plate and a right support plate; the outer shaft is hollow and a plurality of through holes are arranged on the side wall, the water storage layer is wrapped on the side wall of the outer shaft, and the scrubbing material is wrapped on the outside of the water storage layer; the two ends of the outer shaft are rotatably connected to the left support plate and the right support plate respectively; the inner shaft is hollow and two rows of through holes are arranged on the side wall, the two ends of the inner shaft pass through the two ends of the outer shaft and are respectively fixed on the left support plate and the right support plate, the other end of the inner shaft is connected to the water injector, and the water injector can inject water into the interior of the outer shaft.

2. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: It also includes a driving motor and a transmission belt; the driving motor is fixed to the left support plate, and one end of the outer shaft and the driving motor are drivably connected together by the transmission belt; the left support plate and the right support plate are provided with sealed bearings, and the outer shaft and the inner shaft are connected to the left support plate and the right support plate by cooperating with the sealed bearings; the left support plate and the right support plate are also provided with fixing frames, and both ends of the inner shaft are fixed to the fixing frames.

3. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The scrubber and scraper board are matched in length.

4. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The plurality of through holes arranged on the side wall of the outer shaft are evenly distributed and are all covered by the water storage layer.

5. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: On the outer shaft, round pancake-shaped limit blocks are sealed at both ends of the water storage layer and the scrubbing object, and a round hole is provided in the middle of the limit block. The limit block is sealed and sleeved on the outer shaft through the round hole, and the limit block can limit the displacement of the water storage layer and the scrubbing object.

6. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The outer shaft and the inner shaft are arranged horizontally, the two rows of through holes on the upper side wall of the inner shaft are located in the upper half of the inner shaft, and the two rows of through holes are symmetrical about the vertical plane where the axis of the inner shaft is located.

7. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The aquifer is a sponge.

8. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The scrubbing object is water-absorbent and is a towel or felt.

9. A cleaning device for a sand paving device of a sand type 3D printer according to claim 1, characterized in that: The water injector can inject water into the outer shaft, and can control the water injection amount and water pressure.

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