Floating sand cleaning device for workpiece for 3D printing sand mold casting

Abstract

The utility model provides a floating sand cleaning device for a 3D printing sand casting workpiece, which comprises an air compressor body, an air guide pipe connected to an exhaust valve of the air compressor body and a mounting frame, mounting grooves are formed in vertical surfaces of two sides of the mounting frame, adjusting blocks are slidably connected in the two mounting grooves, and the adjusting blocks are connected with the air guide pipe. A rotating cylinder is rotatably connected to the two adjusting blocks, a plurality of sets of brushes are evenly arranged on the outer side wall of the rotating cylinder, a plurality of exhaust holes are formed in the outer side wall of the rotating cylinder, and one end of an air guide pipe is connected to one end of the rotating cylinder through a rotating connector. Therefore, the cleaning effect and speed of floating sand on the workpiece can be improved through synchronous rotation of the multiple sets of brushes and the multiple exhaust holes, then the surface quality and size precision of the workpiece can be prevented from being affected, and the subsequent surface treatment procedure of the workpiece can be prevented from being affected.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing sand casting technology, specifically to a floating sand cleaning device for workpieces in 3D printing sand casting. Background Technology

[0002] 3D printing sand casting is an innovative casting method that integrates 3D printing technology with traditional sand casting processes. Based on a digital three-dimensional model, 3D printing equipment is used to build up special sand materials such as resin sand containing binder layer by layer according to the cross-sectional information of the model to print a sand mold, including upper and lower sand molds, core, etc. Then, molten metal is poured into the cavity formed by the sand mold. After the molten metal cools and solidifies, the sand mold is removed to obtain the desired metal casting.

[0003] In existing technologies, compressed air spray guns are generally used to clean the loose sand on the cast workpiece. The compressed air spray gun can easily clean the loose sand that adheres to the surface of the workpiece after casting by spraying air.

[0004] However, due to the process characteristics of 3D printing sand casting, some loose sand will adhere tightly to the surface of the workpiece. It is difficult to completely remove the loose sand adhering to the surface of the workpiece by relying on the airflow ejected by the air gun, which may affect the surface quality and dimensional accuracy of the workpiece, and also affect subsequent surface treatment processes. Utility Model Content

[0005] In view of this, the present invention provides a floating sand cleaning device for workpieces of 3D printed sand casting. By setting a rotating cylinder and several vent holes and multiple sets of brushes, the floating sand on the workpiece can be cleaned more effectively and quickly by rotating the multiple sets of brushes and several vent holes synchronously. This can avoid affecting the surface quality and dimensional accuracy of the workpiece, and also avoid affecting the subsequent surface treatment process of the workpiece.

[0006] To solve the above technical problems, this utility model provides a floating sand cleaning device for workpieces of 3D printed sand casting, including an air compressor body, an air guide pipe connected to the exhaust valve of the air compressor body, and a mounting frame. The mounting frame has mounting grooves on both vertical surfaces. The mounting grooves can be integrally formed with the mounting frame by casting through a mold during manufacturing. Adjusting blocks are slidably connected in both mounting grooves. A rotating cylinder is rotatably connected to the two adjusting blocks. Both ends of the rotating cylinder are rotatably connected to the two adjusting blocks through bearings.

[0007] Multiple sets of brushes are evenly arranged on the outer side wall of the rotating cylinder. The multiple sets of brushes are fixedly connected to the outer side wall of the rotating cylinder. Several vent holes are opened on the outer side wall of the rotating cylinder. The several vent holes can be integrally formed with the rotating cylinder by casting through a mold during the manufacturing process. The multiple sets of brushes and the several vent holes are arranged alternately.

[0008] One end of the air guide tube is connected to one end of the rotating cylinder via a rotary joint. A drive assembly is provided on one side of one of the adjusting blocks. The drive assembly is used to drive the rotating cylinder to rotate.

[0009] The drive assembly includes a support plate mounted on one side of the adjusting block. The support plate is bolted to the vertical surface of one side of the adjusting block. A motor is mounted on the side of the support plate facing the adjusting block and corresponding to the rotating cylinder. The motor is bolted to the side of the support plate, and the output shaft of the motor is connected to one end of the rotating cylinder via a coupling.

[0010] Each adjusting block has multiple guide rods connected to its upper part. One end of each guide rod is fixedly connected to the upper part of the adjusting block. The guide rods pass through the upper part of the mounting frame and are slidably connected to the mounting frame. That is, multiple through holes are opened on the upper part of the mounting frame corresponding to the positions of the guide rods. The guide rods are slidably connected in the corresponding through holes. The upper parts of the guide rods are connected by a lifting plate, which is fixedly connected to the upper part of the guide rods. A spring is set around each guide rod. The two ends of each spring are respectively connected to the upper part of the adjusting block and the upper part of the inner sidewall of the mounting groove. That is, the inner ring of the spring is set around the guide rod but is not connected to the guide rod. The two ends of each spring are respectively fixedly connected to the upper part of the adjusting block and the upper part of the inner sidewall of the mounting groove.

[0011] Each adjusting block has a limit block on both sides, and the limit block is fixedly connected to the vertical surfaces on both sides of each adjusting block. Each mounting groove has a limit groove on both sides of its vertical inner wall. The limit groove can be integrally formed with the mounting groove by casting a mold during manufacturing. Each limit block is slidably connected in its corresponding limit groove.

[0012] A sliding groove is provided at the upper axis of the lifting plate. The sliding groove can be opened by a cutting machine when the lifting plate is made. A fixing frame is provided on the upper part of the mounting frame and inside the sliding groove. The fixing frame is fixedly connected to the upper part of the mounting frame.

[0013] A protective layer is provided on the outer wall of the fixed frame. The protective layer is fixedly connected to the outer wall of the fixed frame and is made of rubber.

[0014] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0015] 1. By setting up a rotating cylinder and several vent holes and multiple sets of brushes, the cleaning effect and speed of loose sand on the workpiece can be improved by the synchronous rotation of multiple sets of brushes and multiple vent holes. This can avoid affecting the surface quality and dimensional accuracy of the workpiece, and also avoid affecting the subsequent surface treatment process of the workpiece.

[0016] 2. By using an adjustable block, guide rod, spring, and lifting plate, the position of the adjustable block and its components can be easily adjusted, and the extension length of multiple brushes can be adjusted, thus avoiding damage to the workpiece.

[0017] 3. The fixed frame and protective layer make it easy for users to exert force, which in turn makes it easy to adjust the position of the lifting plate and prevents injury to the workers' hands. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the mounting bracket and its components according to the present invention.

[0020] Figure 3 This is a schematic diagram of the mounting bracket and its components on the other side of the present invention.

[0021] Figure 4 This is a schematic diagram of the rotating cylinder and its components according to the present invention.

[0022] Figure 5 This is a schematic diagram of a partial component structure of this utility model.

[0023] In the diagram: 101, air compressor body; 102, air guide pipe; 103, mounting bracket; 104, mounting slot; 105, adjusting block; 106, rotating cylinder; 107, brush; 108, exhaust port;

[0024] 201. Motor; 202. Support plate;

[0025] 301. Guide rod; 302. Spring; 303. Lifting plate;

[0026] 401. Sliding groove; 402. Fixing bracket; 403. Protective layer. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0028] like Figure 1 , 3 As shown in Figure 4: A floating sand cleaning device for 3D printed sand casting workpieces includes an air compressor body 101, with an air guide pipe 102 connected to the exhaust valve of the air compressor body 101 (all of which are prior art and need not be described in detail). It also includes a mounting frame 103, which provides stable support for its components. Mounting grooves 104 are provided on both vertical surfaces of the mounting frame 103. These grooves allow for support of the adjusting block 105 and its components, and also enable position adjustment. This allows for adjustment of the contact length between the multiple sets of brushes 107 and the workpiece, thus enabling cleaning of gaps according to the workpiece's shape. The mounting grooves 104 can be connected to the mounting frame 103. 3. The components are integrally formed by casting with a mold during manufacturing, which makes the connection structure more stable and facilitates manufacturing. Adjusting blocks 105 are slidably connected in both mounting slots 104. The adjusting blocks 105 provide stable support for the rotating cylinder 106 and its components. A rotating cylinder 106 is rotatably connected to the two adjusting blocks 105. When the rotating cylinder 106 rotates, the multiple vent holes 108 and the multiple sets of brushes 107 on it rotate accordingly, which further improves the cleaning effect and speed of the loose sand on the workpiece. Both ends of the rotating cylinder 106 are rotatably connected to the two adjusting blocks 105 through bearings, so that the rotating cylinder 106 will not jam when it rotates.

[0029] like Figure 3 , 4As shown: Multiple sets of brushes 107 are evenly arranged on the outer wall of the rotating cylinder 106. The multiple sets of brushes 107 rotate, thus cleaning the loose sand tightly adhering to the workpiece surface. The rotating brushes 107, in conjunction with several vent holes 108, effectively clean the loose sand from the workpiece surface. The multiple sets of brushes 107 are fixedly connected to the outer wall of the rotating cylinder 106, making the connection structure more stable. Several vent holes 108 are provided on the outer wall of the rotating cylinder 106 to... Air can be compressed by the air compressor body 101 and guided into the rotating cylinder 106 through the air guide pipe 102, and then discharged through several exhaust holes 108. This allows the rotating gas to blow away the loose sand on the workpiece and the rotating multiple sets of brushes 107 to brush the surface of the workpiece. Therefore, the cleaning effect of loose sand on the workpiece can be further improved, so that the loose sand attached to the workpiece can be cleaned, avoiding affecting the surface quality and dimensional accuracy of the workpiece, and also avoiding affecting subsequent surface treatment processes.

[0030] like Figure 1 , 4 As shown: Several exhaust holes 108 can be integrally formed with the rotating cylinder 106 by casting through a mold during manufacturing, thereby making their connection structure more stable. Multiple sets of brushes 107 are staggered with several exhaust holes 108, so that when multiple sets of brushes 107 clean the floating sand on the surface of the workpiece, they will not affect the normal air output of several exhaust holes 108, thereby further improving the cleaning effect on the workpiece. One end of the air guide pipe 102 is connected to one end of the rotating cylinder 106 through a rotary joint, so that the compressed air generated by the air compressor body 101 can be guided to the rotating cylinder 106 and sprayed out through several exhaust holes 108 to clean the workpiece. The connection through the rotary joint ensures that the air guide pipe 102 will not rotate when the rotating cylinder 106 rotates, thereby avoiding the air guide pipe 102 from rotating and causing entanglement. One of the adjusting blocks 105 is provided with a drive component on one side, which is used to drive the rotating cylinder 106 to rotate.

[0031] like Figure 2As shown: The drive assembly includes a support plate 202 disposed on one side of the adjusting block 105. The support plate 202 provides support for the motor 201, preventing the output shaft of the motor 201 from rotating. The support plate 202 is bolted to the vertical surface of one side of the adjusting block 105, making it easy to install and remove. The motor 201 is disposed on the side of the support plate 202 facing the adjusting block 105 and corresponding to the rotating cylinder 106. The motor 201's output shaft rotation drives the rotating cylinder 106 to rotate accordingly. The motor 201 is bolted to one side of the support plate 202, making it easy to install and remove when maintenance or replacement is required. The motor 201's output shaft is connected to one end of the rotating cylinder 106 via a coupling, so that rotation of the motor 201's output shaft drives the rotating cylinder 106 to rotate accordingly.

[0032] like Figure 2 , 3 As shown in Figure 5: Each adjusting block 105 is connected to multiple guide rods 301 on its upper part. These guide rods 301 guide the adjusting block 105, allowing for position adjustment. One end of each guide rod 301 is fixedly connected to the upper part of the adjusting block 105, making the connection structure more stable and ensuring proper guidance. The guide rods 301 pass through the upper part of the mounting frame 103 and are slidably connected to it. Specifically, the upper part of the mounting frame 103 corresponds to the multiple guide rods 301. Multiple through holes are provided at the position, and multiple guide rods 301 are slidably connected in the corresponding through holes, so that the guide rods 301 can be limited in the through holes, thereby further improving the guiding effect on the adjusting block 105. The upper part of the multiple guide rods 301 is connected by a lifting plate 303. The lifting plate 303 can be used to lift the multiple guide rods 301, thereby adjusting the position of the adjusting block 105 and its components. The lifting plate 303 is fixedly connected to the upper part of the multiple guide rods 301, making the connection structure more stable.

[0033] like Figure 3 , 5As shown: A spring 302 is provided around each guide rod 301. The spring 302 allows the two adjusting blocks 105 to be lowered after being lifted by the lifting plate 303. Releasing the lifting plate 303 allows the spring 302 to automatically return to its original position. The position of the adjusting block 105 and its components can be adjusted by the operator applying pressure. The two ends of each spring 302 are connected to the upper part of the adjusting block 105 and the upper part of the inner wall of the mounting groove 104, respectively. That is, the inner ring of the spring 302 is set around the guide rod 301 but is not connected to the guide rod 301. The two ends of each spring 302 are fixedly connected to the upper part of the adjusting block 105 and the upper part of the inner wall of the mounting groove 104, respectively. This provides stable support for the spring 302 and allows the spring 302 to apply a certain pressure to the adjusting block 105 through elastic deformation. Under the action of the spring 302, the adjusting block 105 can return to its original position when the operator releases his hand after being lifted.

[0034] like Figure 2 , 5 As shown: Each adjusting block 105 has limit blocks on both sides. The limit blocks, in conjunction with the limit grooves, further limit the adjusting block 105, thereby preventing it from shaking or tilting during adjustment and further improving the stability of the rotating cylinder 106 and its components. The limit blocks are fixedly connected to the vertical surfaces on both sides of each adjusting block 105, making the connection structure more stable. Each mounting groove 104 has limit grooves on both sides of its vertical inner walls, which limit the limit blocks and further limit the adjusting block 105, improving the limiting structure. The limit grooves can be integrally formed with the mounting grooves 104 by casting a mold during manufacturing, making the connection structure more stable and easier to manufacture. Each limit block is slidably connected in its corresponding limit groove, thereby preventing the adjusting block 105 from getting stuck during movement.

[0035] like Figure 2 , 3As shown in Figure 5, a sliding groove 401 is provided at the upper axis of the lifting plate 303. The sliding groove 401 allows the lifting plate 303 to slide on the fixed frame 402 during vertical movement, thus guiding the lifting plate 303 and facilitating the installation of the fixed frame 402. The sliding groove 401 can be created using a cutting machine during the manufacturing of the lifting plate 303, resulting in a more stable connection structure and easier manufacturing. A fixed frame 402 is provided on the upper part of the mounting frame 103 within the sliding groove 401. The fixed frame 402 facilitates the user's application of force, thereby facilitating the lifting plate 303. The position of 3 is adjusted, and the fixing bracket 402 is fixedly connected to the upper part of the mounting bracket 103, so that the connection structure is more stable. A protective layer 403 is provided on the outer wall of the fixing bracket 402. The protective layer 403 can protect the worker's hands and prevent the sharp edges of the fixing bracket 402 from causing injury to the worker's hands. The protective layer 403 is fixedly connected to the outer wall of the fixing bracket 402, so that the connection structure is more stable. The protective layer 403 is made of rubber. The soft rubber material can increase friction to prevent slipping during use and avoid injury to the worker's hands.

[0036] In use, place the air compressor body 101 in a suitable position, then turn on the air compressor body 101 and open its exhaust valve. Compressed gas can be guided to one side of the rotating drum 106 through the air guide pipe 102. At the same time, start the motor 201 so that the rotating drum 106 and its components can rotate accordingly. When it is necessary to clean the workpiece of loose sand, the operator holds the lifting plate 303 and uses his palm to support the fixing frame 402. The position of the adjusting block 105 can be adjusted so that the position of the multiple sets of brushes 107 is retracted a certain distance into the mounting frame 103. When the palm relaxes the lifting plate 303, the position of the multiple sets of brushes 107 will move a certain distance away from the mounting bracket 103. According to the shape of the workpiece, the height of the rotating cylinder 106 and the multiple sets of brushes 107 on it can be adjusted to clean the workpiece according to the depth or shallowness of the groove, thus avoiding damage to the workpiece. Furthermore, the floating sand attached to the surface of the workpiece can be cleaned through the rotating exhaust holes 108 and the multiple sets of brushes 107 on them, thereby avoiding affecting the surface quality and dimensional accuracy of the workpiece, and avoiding affecting the subsequent surface treatment process of the workpiece.

[0037] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for cleaning floating sand from 3D printed sand casting workpieces, comprising an air compressor body (101), wherein an air guide pipe (102) is connected to the exhaust valve of the air compressor body (101), characterized in that: It also includes a mounting bracket (103), on which mounting slots (104) are provided on both vertical surfaces. Adjusting blocks (105) are slidably connected in both mounting slots (104), and a rotating cylinder (106) is rotatably connected to the two adjusting blocks (105). Multiple sets of brushes (107) are evenly arranged on the outer side wall of the rotating cylinder (106), and several exhaust holes (108) are opened on the outer side wall of the rotating cylinder (106). One end of the air guide pipe (102) is connected to one end of the rotating cylinder (106) via a rotary joint. A drive assembly is provided on one side of one of the adjusting blocks (105), and the drive assembly is used to drive the rotating cylinder (106) to rotate.

2. The floating sand cleaning device for 3D printed sand casting workpieces as described in claim 1, characterized in that: The drive assembly includes a support plate (202) disposed on one side of the adjusting block (105). A motor (201) is disposed on the side of the support plate (202) facing the adjusting block (105) and corresponding to the rotating cylinder (106). The output shaft of the motor (201) is connected to one end of the rotating cylinder (106) through a coupling.

3. The floating sand cleaning device for 3D printed sand casting workpieces as described in claim 1, characterized in that: Each of the adjusting blocks (105) is connected to a plurality of guide rods (301) on its upper part. The plurality of guide rods (301) pass through the upper part of the mounting frame (103) and are slidably connected to the mounting frame (103). The upper parts of the plurality of guide rods (301) are connected by a lifting plate (303). A spring (302) is provided around each of the guide rods (301). The two ends of each spring (302) are respectively connected to the upper part of the adjusting block (105) and the upper part of the inner sidewall of the mounting groove (104).

4. The floating sand cleaning device for 3D printed sand casting workpieces as described in claim 3, characterized in that: Each of the adjustment blocks (105) is provided with limit blocks on both sides, and each of the mounting grooves (104) is provided with limit grooves on both sides of the vertical inner wall. Each limit block is slidably connected in the corresponding limit groove.

5. The floating sand cleaning device for 3D printed sand casting workpieces as described in claim 3, characterized in that: A sliding groove (401) is provided at the upper axis of the lifting plate (303), and a fixing frame (402) is provided on the upper part of the mounting frame (103) and in the sliding groove (401).

6. The floating sand cleaning device for 3D printed sand casting workpieces as described in claim 5, characterized in that: A protective layer (403) is provided on the outer wall of the fixing frame (402), and the protective layer (403) is made of rubber.

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