A sand leakage prevention assembly for a sand mold 3D printed box

Abstract

The utility model is suitable for 3D printing box technical field provides a kind of sand leakage prevention subassembly for sand mould 3D printing box, including printing box, be provided with built-in box in printing box, built-in box is slidably connected with platform in it, the inner wall of left and right sides of built-in box is all set with two extension grooves, the left and right sides of the lower surface of platform are all provided with two fixed sliding blocks, the other side of two fixed sliding blocks respectively through two grooves extends the outside of built-in box, and can slide in groove, the top of groove is provided with the blocking block for limiting, the side of the lower surface of platform close to fixed sliding block is provided with n type mounting seat, rotatingly connected with winding shaft between two vertical boards of n type mounting seat, the utility model is through setting up flexible steel band of winding, printing sand box platform can seal both sides gap in the movement process of lifting and descending, solve sand leakage problem, ensure the use effect of this 3D printing box.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing box technology, and more specifically, it relates to a sand-leakage prevention component for a sand mold 3D printing box. Background Technology

[0002] The raw material used in sand mold 3D printing equipment is mainly silica sand, with a mesh size ranging from 200 mesh to 90 mesh and a pore size of approximately 0.074 mm to 0.9 mm. In the actual working process, the platform inside the 3D printing work box descends layer by layer to complete the entire printing work.

[0003] The existing printing platform's vertical movement mechanism generally uses a screw drive. Using a screw drive to control the printing platform's vertical movement allows for more precise control of the printing platform's displacement distance. However, using a screw drive has the following drawbacks: the existing screw drive requires sliding grooves to be opened on both sides of the printing chamber. This inevitably causes sand on the printing platform to leak out through the sliding grooves to the bottom of the chamber during use. If the sand cannot be discharged for a long time, it will accumulate at the bottom of the chamber, preventing the lifting bottom from returning to zero completely, thus affecting the entire printing process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a sand-leakage prevention component for sand mold 3D printing boxes, in which a flexible steel belt can seal the gaps on both sides during the lifting and lowering motion of the printing sand box platform.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sand-leakage prevention component for a sand mold 3D printing box includes a printing box with an inner box body inside. A platform is slidably connected inside the inner box body. Two grooves extending outward from the outer surface of the inner walls on both sides of the inner box body are formed. Two fixed sliders are provided on both sides of the lower surface of the platform. The other side of the two fixed sliders extends outward from the outer side of the inner box body through the two grooves and can slide within the grooves. A blocking block for limiting the movement is provided at the top of the groove. An n-type mounting seat is provided on the lower surface of the platform near the fixed sliders. A winding shaft is rotatably connected between the two vertical plates of the n-type mounting seat. A spring is provided between the winding shaft and the n-type mounting seat. A flexible steel strip is wound on the outer surface of the winding shaft. An inclined groove communicating with the groove is formed on the upper surface of the fixed sliders. The other side of the flexible steel strip extends into the groove through the inclined groove and connects to the lower surface of the blocking block. The flexible steel strip fits against the inner wall of the groove and blocks the groove.

[0007] The present invention is further configured such that: a connecting plate is provided on one side of the two fixed sliders located outside the inner box; screws are rotatably connected to both sides of the inner box; a threaded sleeve is provided on the side of the connecting plate near the screw, which is threaded onto the outer surface of the screw; and a motor transmission assembly for controlling the rotation of the screw is provided at the bottom of the inner box.

[0008] The present invention is further configured such that: a guide shaft is rotatably connected between the inner walls of the two sides of the inclined chute near the chute, and a flexible steel belt is connected to the lower side of the guide shaft.

[0009] The present invention is further configured such that: an inclined scraper is provided in the inclined groove of the fixed slider, the inclined scraper is located above the guide shaft, one side of the inclined scraper contacts and slides with the inner surface of the flexible steel strip, the other side of the inclined scraper extends out of the inclined groove of the fixed slider, and a discharge plate is provided on the side of the inclined scraper outside the fixed slider, and a discharge groove with front and rear inclinations is opened on the discharge plate.

[0010] The present invention is further configured such that: a rotating shaft located below the flexible steel strip is rotatably connected to the inner wall of the inclined groove of the fixed slider, and a contact wheel is sleeved on the outer surface of the rotating shaft, and the outer surface of the contact wheel contacts the lower surface of the flexible steel strip.

[0011] The present invention is further configured such that: the outer surface of the contact wheel is provided with a friction layer for increasing friction.

[0012] The present invention is further configured such that: an installation shaft is rotatably connected to the inner wall of the inclined groove of the fixed slider; a swing plate is sleeved on the outer surface of the installation shaft; one side of the swing plate is located below the rotating shaft; a cam is sleeved on the outer surface of the rotating shaft; the outer surface of the cam contacts and slides with the upper surface of one side of the swing plate; and a striking ball is provided on the upper surface of the other side of the swing plate.

[0013] The advantages of this utility model are:

[0014] Firstly, by setting up a retractable flexible steel belt, the printing sand box platform can seal the gaps on both sides during the lifting and lowering process, solving the problem of sand leakage and ensuring the effectiveness of the 3D printing box.

[0015] Secondly, this utility model can scrape off impurities attached to the surface of the flexible steel strip during winding, preventing these impurities from causing indentations or damage to the flexible steel strip during winding, thus further ensuring the service life of the flexible steel strip. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sand-leakage prevention component for a sand mold 3D printing box according to the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0019] Figure 4 This is a partial front view of the platform of this utility model;

[0020] Figure 5 for Figure 4 Enlarged view of point C in the middle.

[0021] In the diagram: 1. Printing box; 2. Internal housing; 3. Platform; 4. Slide groove; 5. Fixed slider; 6. Connecting plate; 7. Threaded sleeve; 8. Screw; 9. Block; 10. N-type mounting base; 11. Rewinding shaft; 12. Flexible steel belt; 13. Guide shaft; 14. Inclined scraper; 15. Discharge plate; 16. Rotating shaft; 17. Contact wheel; 18. Cam; 19. Mounting shaft; 20. Swing plate; 21. Striking ball. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] Specifically, it refers to a sand-leakage prevention component for a sand mold 3D printing box, including a printing box 1, an inner box 2 inside the printing box 1, the inner box 2 being hollow inside and open at the top, a platform 3 slidably connected inside the inner box 2, the outer surface of the platform 3 being in contact with the inner wall of the inner box 2, two grooves 4 extending out of their outer surfaces on the left and right inner walls of the inner box 2, two fixed sliders 5 on the left and right sides of the lower surface of the platform 3, the other side of the two fixed sliders 5 extending out of the outer side of the inner box 2 through the two grooves 4 respectively, and being able to slide within the grooves 4, a connecting plate 6 is provided on the side of the two fixed sliders 5 located outside the inner box 2, screws 8 are rotatably connected to the left and right sides of the inner box 2, a threaded sleeve 7 threaded onto the outer surface of the screw 8 is provided on the side of the connecting plate 6 near the screw 8, and a motor transmission assembly for controlling the rotation of the screw 8 is provided at the bottom of the inner box 2.

[0026] In use, the motor transmission assembly controls the screw 8 to rotate, so the threaded sleeve 7 drives the connecting plate 6 to move up or down under the transmission of the screw 8 thread. Therefore, the platform 3 can move up or down synchronously with the fixed slider 5, so as to achieve the purpose of controlling the platform 3 to move up and down.

[0027] The top of the slide 4 is provided with a blocking block 9 for limiting the position. An n-shaped mounting seat 10 is provided on the lower surface of the platform 3 near the fixed slider 5. The n-shaped mounting seat 10 and the fixed slider 5 are in the same horizontal position. A winding shaft 11 is rotatably connected between the two vertical plates of the n-shaped mounting seat 10. A spring is provided between the winding shaft 11 and the n-shaped mounting seat 10. A flexible steel strip 12 is wound on the outer surface of the winding shaft 11. An inclined slide chute communicating with the slide 4 is opened on the upper surface of the fixed slider 5. The other side of the flexible steel strip 12 extends into the slide 4 through the inclined slide chute and is connected to the lower surface of the blocking block 9. The flexible steel strip 12 fits against the inner wall of the slide 4 and blocks the slide 4.

[0028] During use, as the platform 3 moves downward, it exerts tension on the flexible steel belt 12. At this time, the winding shaft 11 rotates, and the spring is tightened. Simultaneously, the flexible steel belt 12 slides within the groove 4. When the platform 3 moves upward, the spring drives the winding shaft 11 to reverse, and the winding shaft 11 winds up the flexible steel belt 12. This structure allows the flexible steel belt 12 to seal the gaps on both sides during the lifting and lowering of the printing sand box platform, solving the sand leakage problem and ensuring the effectiveness of the 3D printing box.

[0029] A guide shaft 13 is rotatably connected between the inner walls of the inclined chute and the two sides of the chute 4. The flexible steel belt 12 is connected to the lower side of the guide shaft 13. Therefore, the guide shaft 13 restricts the flexible steel belt 12, so that the side of the flexible steel belt 12 that extends into the chute 4 remains straight and taut, thus ensuring the sealing effect of the chute 4.

[0030] An inclined scraper 14 is installed in the inclined groove of the fixed slider 5. The inclined scraper 14 is located above the guide shaft 13. One side of the inclined scraper 14 contacts and slides against the inner surface of the flexible steel strip 12. The other side of the inclined scraper 14 extends out of the inclined groove of the fixed slider 5. A discharge plate 15 is installed on the side of the inclined scraper 14 outside the fixed slider 5. The discharge plate 15 has a discharge groove that is inclined forward and backward. During use, when the flexible steel strip 12 is wound by the winding shaft 11, the inclined scraper 14 can scrape off the dust attached to the flexible steel strip 12, and the scraped-off impurities fall off at the same time. The inclined scraper 14 extends and slides onto the discharge plate 15. Since the discharge plate 15 has a front-to-back inclined discharge groove, the dust that rolls onto the discharge plate 15 rolls forward or backward, thus preventing impurities from falling back onto the flexible steel strip 12. With the above structure, impurities attached to the inner side of the flexible steel strip 12 can be scraped off when the flexible steel strip 12 is wound up, preventing these impurities from causing indentations or damage to the flexible steel strip 12 as it is wound up, and further ensuring the service life of the flexible steel strip 12.

[0031] A rotating shaft 16 located below the flexible steel belt 12 is rotatably connected to the inner wall of the inclined groove of the fixed slider 5. A contact wheel 17 is sleeved on the outer surface of the rotating shaft 16. The outer surface of the contact wheel 17 contacts the lower surface of the flexible steel belt 12. When the flexible steel belt 12 is being conveyed, the contact wheel 17 rotates under the action of friction, and the rotating shaft 16 rotates synchronously with the contact wheel 17.

[0032] Meanwhile, the outer surface of the contact wheel 17 is provided with a friction layer to increase friction, ensuring the stability of the contact wheel 17 during the conveying process of the flexible steel belt 12.

[0033] A mounting shaft 19 is rotatably connected to the inner wall of the inclined groove of the fixed slider 5. A swing plate 20 is sleeved on the outer surface of the mounting shaft 19. One side of the swing plate 20 is located below the rotating shaft 16. A cam 18 is sleeved on the outer surface of the rotating shaft 16. The outer surface of the cam 18 contacts and slides with the upper surface of one side of the swing plate 20. A striking ball 21 is provided on the upper surface of the other side of the swing plate 20.

[0034] During use, the rotation of the rotating shaft 16 drives the cam 18 to rotate synchronously. The cam 18 will exert a thrust on one side of the swing plate 20, causing the swing plate 20 to rotate clockwise around the mounting shaft 19. At this time, the swing plate 20 drives the striking ball 21 to strike the bottom of the flexible steel strip 12, causing the flexible steel strip 12 to vibrate. In this way, the impurities attached to the outer surface of the flexible steel strip 12 can be dislodged under the action of vibration, further ensuring the cleaning effect of the flexible steel strip 12.

[0035] The striking ball 21 is made of elastic material, which can reduce the impact on the flexible steel strip 12 and avoid the problem of dents appearing when the striking ball 21 strikes the flexible steel strip 12.

[0036] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A sand leakage prevention assembly for a sand mold 3D printing box, comprising a printing box (1), a built-in box (2) is arranged in the printing box (1), and a platform (3) is slidably connected in the built-in box (2), characterized in that: The inner walls of the left and right sides of the built-in housing (2) are provided with two grooves (4) extending out of their outer surfaces. Two fixed sliders (5) are provided on the left and right sides of the lower surface of the platform (3). The other side of each fixed slider (5) extends out of the outer side of the built-in housing (2) through the two grooves (4) and can slide within the grooves (4). A blocking block (9) for limiting movement is provided at the top of the groove (4). An n-type mounting base (10) is provided on the lower surface of the platform (3) near the fixed sliders (5). A winding shaft (11) is rotatably connected between the two vertical plates of the seat (10). A spring is provided between the winding shaft (11) and the n-type mounting seat (10). A flexible steel strip (12) is wound on the outer surface of the winding shaft (11). An inclined groove communicating with the slide groove (4) is opened on the upper surface of the fixed slider (5). The other side of the flexible steel strip (12) extends into the slide groove (4) through the inclined groove and is connected to the lower surface of the blocking block (9). The flexible steel strip (12) fits against the inner wall of the slide groove (4) and blocks the slide groove (4).

2. A sand leakage prevention assembly for a sand mold 3D printed box according to claim 1, characterized in that: The two fixed sliders (5) are provided with a connecting plate (6) on one side outside the inner box (2). The left and right sides of the inner box (2) are rotatably connected with screws (8). The connecting plate (6) is provided with a threaded sleeve (7) threaded on the outer surface of the screw (8) on the side close to the screw (8). The bottom of the inner box (2) is provided with a motor transmission assembly for controlling the rotation of the screw (8).

3. The sand leakage prevention assembly for sand-type 3D printed box of claim 1, wherein: The inclined chute is rotatably connected between the inner walls of the two sides of the chute (4), and the flexible steel belt (12) is connected to the lower side of the guide shaft (13).

4. The anti-sand leakage component for a sand mold 3D printing box according to claim 1, characterized in that: An inclined scraper (14) is provided in the inclined groove of the fixed slider (5). The inclined scraper (14) is located above the guide shaft (13). One side of the inclined scraper (14) contacts the inner surface of the flexible steel strip (12) and slides. The other side of the inclined scraper (14) extends out of the inclined groove of the fixed slider (5). A discharge plate (15) is provided on the side of the inclined scraper (14) outside the fixed slider (5). A discharge groove with front and rear inclinations is opened on the discharge plate (15).

5. The anti-sand leakage component for a sand mold 3D printing box according to claim 4, characterized in that: The inclined groove inner wall of the fixed slider (5) is rotatably connected to a rotating shaft (16) located below the flexible steel belt (12). A contact wheel (17) is sleeved on the outer surface of the rotating shaft (16), and the outer surface of the contact wheel (17) contacts the lower surface of the flexible steel belt (12).

6. The anti-sand leakage component for a sand mold 3D printing box according to claim 5, characterized in that: The outer surface of the contact wheel (17) is provided with a friction layer for increasing friction.

7. The anti-sand leakage component for a sand mold 3D printing box according to claim 5, characterized in that: The fixed slider (5) is rotatably connected to the inner wall of the inclined groove. The outer surface of the mounting shaft (19) is fitted with a swing plate (20). One side of the swing plate (20) is located below the rotating shaft (16). The outer surface of the rotating shaft (16) is fitted with a cam (18). The outer surface of the cam (18) contacts and slides with the upper surface of one side of the swing plate (20). The upper surface of the other side of the swing plate (20) is provided with a striking ball (21).

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