Automatic sand blasting machine for rust removal on surface of steel structure

Abstract

The utility model discloses a kind of steel structure surface derusting automatic sand blasting machine, it is related to sand blasting derusting technical field, and the utility model includes box, the upper portion of box is equipped with sand blasting mechanism, and it can be used to carry out sand blasting derusting to the spherical face inner wall of steel structure workpiece, sand blasting mechanism includes: inner wall derusting subassembly includes the frame fixedly installed at the top of box, the middle part of frame is equipped with three-jaw chuck, the top of frame is fixedly installed with cylinder, the present application is controlled by servo motor, driving gear drives pivot rotation, so that adjusting frame drives sand blasting head to do circular motion, simultaneously, the linkage of driven gear and screw makes moving frame move along axial direction, adjusting frame is driven to realize along arc shape sliding by connecting rod, this compound motion track makes sand blasting head be able to with constant angle to adhere spherical inner wall curved surface, ensure abrasive flow evenly cover entire area to be treated, and then improve the efficiency and derusting effect of sand blasting derusting.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting and rust removal technology, specifically an automatic sandblasting machine for rust removal on steel structure surfaces. Background Technology

[0002] Rust removal on steel structure surfaces is usually achieved using a sandblasting machine. Sandblasting is a process that uses the impact of high-speed sand jets to clean and roughen the surface of the substrate. Compressed air is used as power to form a high-speed jet stream that propels the abrasive material onto the surface of the workpiece to be treated, causing changes in the appearance or shape of the workpiece surface. This results in a certain degree of cleanliness and varying roughness on the workpiece surface, while also facilitating the leveling and decoration of paint.

[0003] Reference patent document: Patent Publication No. CN115958537A, Patent Publication Date 2023-04-14, discloses a sandblasting rust removal device for building steel structures, including a sandblasting machine. The bottom of the sandblasting machine is equipped with a sandblasting recovery box. The top of the sandblasting recovery box is connected to the inner cavity of the sandblasting machine through a connecting groove. The inner cavity of the sandblasting recovery box is rotatably connected to a connecting shaft. A filter frame is fixedly connected to the surface of the connecting shaft. In this sandblasting rust removal device for building steel structures, the rust brushed off falls into the sandblasting recovery box through the connecting groove and into the filter frame below. At this time, the electromagnet inside the filter frame is energized to attract the iron sand inside. Water and sand leak from the filter screen into the sand-water chamber. After turning over, the rust accumulates above the water filter frame, and the water falls into the water collection tank for recycling. This can effectively separate rust and sand, avoiding the spraying of rust mixed with water, and improving the separation effect.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Traditionally, when removing rust from the spherical inner walls of steel structures, sandblasting machines are often operated using fixed tracks or by hand-held spray guns. During operation, the angle and speed of the spray gun are largely controlled by experience, resulting in the spray gun angle not being able to uniformly remove rust according to the curvature of the steel structure. This leads to poor consistency in rust removal, requiring multiple sandblasting processes to remove the rust, thus slowing down the rust removal efficiency. Furthermore, for thin steel structures, multiple sandblasting processes can easily damage the material surface.

[0006] Therefore, this utility model provides an automatic sandblasting machine for rust removal on steel structure surfaces. Utility Model Content

[0007] To address the problem that traditional rust removal methods for the inner walls of cylindrical steel structures are slow and prone to surface damage after repeated sandblasting, the purpose of this invention is to provide an automatic sandblasting machine for rust removal on steel structures.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic sandblasting machine for rust removal on steel structures, comprising a housing, wherein a sandblasting mechanism is provided on the upper part of the housing, which can be used to sandblast and remove rust from the inner wall of the spherical surface of a steel structure workpiece. The sandblasting mechanism includes:

[0009] The internal wall rust removal assembly includes a frame fixedly installed at the top of the housing, a three-jaw chuck in the middle of the frame, a cylinder fixedly installed at the top of the frame, the drive end of the cylinder fixedly installed on one side of the upper part of the three-jaw chuck, a rotating shaft rotatably installed on one side of the frame, a drive gear fixedly installed on one side of the rotating shaft, a drive assembly on one side of the drive gear, an adjusting frame movably installed at one end of the rotating shaft, a sandblasting head detachably installed at one end of the adjusting frame, a rotating ring slidingly mounted on the upper part of the rotating shaft, a connecting rod movably installed on the lower part of one side of the rotating ring, the other end of the connecting rod movably installed on the lower part of one side of the adjusting frame, a screw rotatably installed on the lower part of one side of the frame, a driven gear fixedly installed on one side of the screw, the driven gear meshing with the drive gear, a movable frame threadedly installed on one side of the screw, and a rotating ring rotatably installed on the upper part of the movable frame.

[0010] The collection component, located at the bottom of the housing, is used to collect the sand and gravel used during sandblasting.

[0011] Preferably, the collecting assembly includes a spiral conveyor blade rotatably mounted on the lower part of the housing, the spiral conveyor blade being connected to the driven gear via a transmission belt, and a discharge port that cooperates with the spiral conveyor blade is provided on one side of the lower part of the housing.

[0012] Preferably, the drive assembly includes a servo motor fixed to one side of the upper part of the frame, and one side of the drive gear is fixedly mounted on the drive end of the servo motor.

[0013] Preferably, the upper part of the frame is provided with a sliding groove, and the upper part of the three-jaw chuck is slidably engaged in the middle of the sliding groove.

[0014] Preferably, two symmetrically distributed drive rods are fixedly installed on the outer surface of the rotating shaft, and the middle part of the rotating ring is slidably locked onto the outer surface of the drive rods.

[0015] Preferably, four evenly distributed sliding rods are fixedly installed in the middle of the frame, and all four sliding rods slide through the three-jaw chuck. Four symmetrically distributed support legs are fixedly installed in the lower part of the box.

[0016] Beneficial effects

[0017] This utility model provides an automatic sandblasting machine for rust removal from steel structures. Compared with the prior art, it has the following advantages:

[0018] 1. This application uses a servo motor to control the drive gear to rotate the shaft, which in turn causes the adjustment frame to move the sandblasting head in a circular motion. At the same time, the linkage between the driven gear and the screw causes the moving frame to move axially. The adjustment frame is driven by the connecting rod to slide along the arc. This composite motion trajectory allows the sandblasting head to fit the curved inner wall of the sphere at a constant angle, ensuring that the abrasive flow evenly covers the entire area to be treated, thereby improving the efficiency and effect of sandblasting and rust removal.

[0019] 2. This application uses the driven gear to rotate, which in turn causes the spiral conveyor blades to rotate under the drive of the transmission belt. This allows the scattered abrasive to be collected from the bottom of the housing and discharged from the discharge port. This facilitates direct connection of the discharge port to the abrasive processing device, improving the continuity of the production process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is another structural schematic diagram of the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the adjusting frame in this utility model.

[0024] In the diagram: 1. Housing; 11. Support leg; 2. Sandblasting mechanism; 21. Inner wall rust removal component; 211. Frame; 212. Cylinder; 213. Three-jaw chuck; 2131. Slide groove; 2132. Sliding rod; 214. Servo motor; 215. Drive gear; 2151. Driven gear; 216. Rotating shaft; 2161. Drive rod; 217. Adjusting frame; 2171. Sandblasting head; 218. Connecting rod; 2181. Rotating ring; 219. Screw; 2191. Moving frame; 22. Collection component; 221. Spiral conveyor blade; 222. Discharge port. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4This utility model provides a technical solution: an automatic sandblasting machine for rust removal on steel structure surfaces, including a housing 1, with a sandblasting mechanism 2 provided on the upper part of the housing 1, which can be used to sandblast and remove rust from the inner wall of the spherical surface of steel structure workpieces. The sandblasting mechanism 2 includes:

[0027] The inner wall rust removal component 21 includes a frame 211 fixedly installed at the top of the housing 1. A three-jaw chuck 213 is located in the middle of the frame 211. The three-jaw chuck 213 uses a KS200 three-jaw pneumatic chuck clamp, with anti-slip texture added to the jaw surface to improve the clamping stability of the workpiece's outer wall. A cylinder 212 is fixedly installed at the top of the frame 211. The cylinder 212 is an original Airtac SI50X75 cylinder with a thickened aluminum alloy body and hard anodizing process, greatly improving the wear resistance and corrosion resistance of the cylinder 212. A motion sensor precisely controls the lifting stroke of the three-jaw chuck 213. The drive end of the cylinder 212 is fixedly mounted on one side of the upper part of the three-jaw chuck 213. A rotating shaft 216 is rotatably mounted on one side of the frame 211. A drive gear 215 is fixedly mounted on one side of the rotating shaft 216. A drive assembly is located on one side of the drive gear 215. An adjusting frame 217 is movably mounted on one end of the rotating shaft 216. A sandblasting head 2171 is detachably mounted on one end of the adjusting frame 217. One end of the sandblasting head 2171 is connected to a sandblasting pipe, through which compressed air is delivered. Abrasive (sand particles) are fed to the blasting head 2171, where they are ejected under negative pressure to remove rust from the workpiece surface. The blasting head 2171 is made of tungsten carbide wear-resistant material, and its internal flow channel is designed as a tapered conical hole. The outlet diameter can be flexibly changed via a quick-release nozzle assembly to adapt to different rust removal precision requirements. A rotating ring 2181 is slidably mounted on the upper part of the rotating shaft 216. A connecting rod 218 is movably mounted on the lower side of one side of the rotating ring 2181. The other end of the connecting rod 218 is movably mounted on the lower side of the adjusting frame 217. Frame 211 A screw 219 is rotatably mounted on the lower part of one side of the housing 1. A driven gear 2151 is fixedly mounted on one side of the screw 219. The driven gear 2151 meshes with the drive gear 215. A movable frame 2191 is threadedly mounted on one side of the screw 219. A rotating ring 2181 is rotatably mounted on the upper part of the movable frame 2191. The bottom end of the movable frame 2191 is in contact with the top end of one side of the housing 1, thereby limiting the movable frame 2191 and ensuring that the movable frame 2191 slides stably under the rotation of the screw 219.

[0028] The collection component 22 is located at the bottom of the housing 1 and is used to collect the sand and gravel used during sandblasting.

[0029] The collecting component 22 includes a spiral conveyor blade 221 rotatably mounted on the lower part of the housing 1. The spiral conveyor blade 221 is connected to the driven gear 2151 via a transmission belt. The transmission belt is made of high-strength rubber material, which has good wear resistance and transmission efficiency. A discharge port 222 is provided on the lower side of the housing 1 to cooperate with the spiral conveyor blade 221.

[0030] The drive assembly includes a servo motor 214 fixed on one side of the upper part of the frame 211. The servo motor 214 is a 60TM-01330F5-C model and is equipped with an absolute encoder, which can accurately control the rotation angle and speed of the shaft 216 to meet the needs of complex curved surface rust removal trajectory planning. One side of the drive gear 215 is fixedly installed on the drive end of the servo motor 214.

[0031] The upper part of the frame 211 is provided with a slide groove 2131, and the upper part of the three-jaw chuck 213 is slidably locked in the middle of the slide groove 2131. By providing the slide groove 2131, the three-jaw chuck 213 can be easily moved back and forth under the drive of the cylinder 212 to transport the steel structure workpiece.

[0032] Two symmetrically distributed drive rods 2161 are fixedly installed on the outer surface of the rotating shaft 216. The middle part of the rotating ring 2181 is slidably locked on the outer surface of the drive rods 2161. Under the limitation of the drive rods 2161, the rotating ring 2181 can slide on the surface of the rotating shaft 216, and the rotation of the rotating shaft 216 can drive the rotating ring 2181 to rotate.

[0033] Four evenly distributed sliding rods 2132 are fixedly installed in the middle of the frame 211. All four sliding rods 2132 slide through the three-jaw chuck 213. Four symmetrically distributed support legs 11 are fixedly installed in the lower part of the box 1. The sliding rods 2132 are used to support and limit the three-jaw chuck 213, ensuring that the three-jaw chuck 213 can stably drive the workpiece to move.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, the steel structure workpiece that needs to be derusted is clamped and fixed on its outer wall by the three-jaw chuck 213. Driven by the cylinder 212, the three-jaw chuck 213 is driven so that one end of the steel structure workpiece is located at the end of the sandblasting head 2171. By starting the servo motor 214, the drive gear 215 is driven to rotate, which in turn drives the rotating shaft 216 to rotate. The rotating ring 2181 is rotated by the limit of the drive rod 2161. The rotation of the rotating shaft 216 drives the adjusting frame 217 to rotate in a circular motion, which in turn drives the sandblasting head 2171 to rotate in a circular motion.

[0036] Meanwhile, the rotation of the drive gear 215 can drive the driven gear 2151 to rotate, causing the screw to rotate 219. This drives the moving frame 2191 to move, which in turn drives the rotating ring 2181 to move. During sandblasting, the rotating ring 2181 is driven to move towards the servo motor 214, which causes the upper part of the adjusting frame 217 to slowly deflect to the other side under the transmission of the connecting rod 218. This causes the sandblasting head 2171 to deflect, and its deflection angle is arc-shaped. As the sandblasting head 2171 makes a circular motion, its angle deflects in an arc shape, thus sandblasting and removing rust from the spherical inner wall of the workpiece. After the rust removal is completed, the deflection angle of the sandblasting head 2171 can be reset under the reverse drive of the servo motor 214. At this time, the workpiece can be moved away from the sandblasting head 2171 under the reverse drive of the cylinder 212, and the rust-removed workpiece can be removed from one side of the three-jaw chuck 213.

[0037] During sandblasting, the abrasive (grit) discharged from the workpiece enters the lower housing 1. Driven by the transmission belt, the spiral conveyor blade 221 rotates to collect and transport the abrasive (grit) that has entered the housing 1, so that it is discharged from the discharge port 222 on the lower side of the housing 1. At the same time, after the sandblasting and rust removal is completed, the abrasive (grit) remaining in the workpiece can also be poured into the housing 1 by the operator when removing the workpiece, and collected by the spiral conveyor blade 221.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic sandblasting machine for rust removal on steel structures, comprising a housing (1), characterized in that: The upper part of the box (1) is provided with a sandblasting mechanism (2), which can be used to sandblast and remove rust from the inner wall of the spherical surface of the steel structure workpiece. The sandblasting mechanism (2) includes: The inner wall rust removal component (21) includes a frame (211) fixedly installed at the top of the housing (1). A three-jaw chuck (213) is provided in the middle of the frame (211). A cylinder (212) is fixedly installed at the top of the frame (211). The drive end of the cylinder (212) is fixedly installed on one side of the upper part of the three-jaw chuck (213). A rotating shaft (216) is rotatably installed on one side of the frame (211). A drive gear (215) is fixedly installed on one side of the rotating shaft (216). A drive assembly is provided on one side of the drive gear (215). An adjusting bracket (217) is movably installed at one end of the rotating shaft (216). A sandblasting head is detachably installed at one end of the adjusting bracket (217). 2171), the upper part of the rotating shaft (216) is provided with a rotating ring (2181), a connecting rod (218) is movably installed on the lower part of one side of the rotating ring (2181), the other end of the connecting rod (218) is movably installed on the lower part of one side of the adjusting frame (217), a screw (219) is rotatably installed on the lower part of one side of the frame (211), a driven gear (2151) is fixedly installed on one side of the screw (219), the driven gear (2151) and the drive gear (215) are meshed and connected to each other, a movable frame (2191) is threaded on one side of the screw (219), and a rotating ring (2181) is rotatably installed on the upper part of the movable frame (2191); A collection component (22) is located at the bottom of the housing (1) for collecting the sand and gravel used during sandblasting.

2. The automatic sandblasting machine for rust removal on steel structures according to claim 1, characterized in that: The collection assembly (22) includes a spiral conveyor blade (221) rotatably installed at the bottom of the box (1). The spiral conveyor blade (221) is connected to the driven gear (2151) via a transmission belt. A discharge port (222) is provided on the lower side of the box (1) to cooperate with the spiral conveyor blade (221).

3. The automatic sandblasting machine for rust removal on steel structures according to claim 1, characterized in that: The drive assembly includes a servo motor (214) fixed on one side of the upper part of the frame (211), and one side of the drive gear (215) is fixedly installed on the drive end of the servo motor (214).

4. The automatic sandblasting machine for rust removal on steel structure surfaces according to claim 1, characterized in that: The upper part of the frame (211) is provided with a sliding groove (2131), and the upper part of the three-jaw chuck (213) is slidably locked in the middle of the sliding groove (2131).

5. The automatic sandblasting machine for rust removal on steel structures according to claim 1, characterized in that: Two symmetrically distributed drive rods (2161) are fixedly installed on the outer surface of the rotating shaft (216), and the middle part of the rotating ring (2181) is slidably locked on the outer surface of the drive rods (2161).

6. The automatic sandblasting machine for rust removal on steel structure surfaces according to claim 1, characterized in that: Four evenly distributed sliding rods (2132) are fixedly installed in the middle of the frame (211), and the four sliding rods (2132) slide through the three-jaw chuck (213). Four symmetrically distributed support legs (11) are fixedly installed in the lower part of the box (1).

Images