A metal surface rust removal device

Abstract

The utility model provides a kind of metal surface derusting device, the present application is provided with scrap collecting box in one end of mounting seat, and the other end is provided with derusting unit, and scrap collecting box opening is towards derusting unit.This layout makes that the iron filings generated in the derusting process can naturally scatter towards the direction of scrap collecting box, facilitate the collection of iron filings, set up several cylinder derusting components and derusting brush components, and by the rotating motor in storage box drive its rotation.Derusting brush component can carry out fine polishing and cleaning to metal surface, further remove residual rust and dirt, and cooperate with cylinder derusting component, realize multilevel derusting effect, set up storage box and scrap collecting box coaxially as cylindrical structure, and the cross section of storage box is smaller than the cross section of scrap collecting box for receiving the opening cross section area of axial iron filings, this design ensures that the iron filings generated in the derusting process can smoothly enter scrap collecting box through the space between storage box and scrap collecting box, improves the efficiency and reliability of iron filings storage.

Description

Technical Field

[0001] This utility model relates to the technical field of metal surface rust removal, specifically a metal surface rust removal device. Background Technology

[0002] Rust removal equipment for metal products is widely used in metal processing, automobile repair, shipbuilding, bridge construction and machinery manufacturing. It can help improve the quality and durability of metal products and provide a good foundation for subsequent processes. Rust removal equipment for metal products is a device used to remove oxides, rust and dirt from metal surfaces. It is mainly used to restore the smoothness of metal products, extend their service life and provide good surface conditions for subsequent coating or processing.

[0003] According to Chinese Utility Model Patent No. CN211103275U, a rust-avoidance device for metal products is proposed. It uses a linear motor to drive the top plate to move along the slide rail, thereby moving the grinding chamber and avoiding the grinding and rust removal treatment of the steel pipe. A servo motor drives the optical tube to rotate through the fixed frame, so that the grinding chamber can grind the steel pipe thoroughly. Although it can effectively remove rust from the surface, it cannot effectively clean the inner wall of the pipe. Moreover, this design can only be applied to round or nearly round metal products, which limits the versatility of the device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a metal surface rust removal device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metal surface rust removal device, comprising: a mounting base, a chip collection box at one end of the mounting base, and a rust removal unit at the other end, the opening of the chip collection box facing the rust removal unit; the rust removal unit comprises: a storage box fixedly connected to the mounting base, a plurality of roller rust removal components arranged in a ring on the outer wall of the storage box, a rust removal brush assembly at one end of the storage box, a rotating motor for driving the rust removal brush assembly to rotate inside the storage box, and the storage box and the chip collection box being coaxially configured as a cylindrical structure, the cross-section of the storage box being ≤ the cross-sectional area of ​​the opening of the chip collection box for collecting axial iron chips.

[0006] Furthermore, the rust removal brush assembly includes: a drive shaft connected to the rotating shaft of the rotating motor, a rotating stop ring on the drive shaft, a spring sleeved on the drive shaft, one end of the spring abutting against the rotating stop ring, and the other end abutting against and fixed at a connecting frame provided at the end of the drive shaft, and a cleaning brush provided at the extended end of the connecting frame, the working surface of the cleaning brush being coaxial and in the same direction as the drive shaft and the storage box.

[0007] As a preferred embodiment of this application, the connecting frame includes: a mounting sleeve fixed on the drive shaft, one bottom end of the mounting sleeve abutting against the spring, at least one connecting rod inclined at one top end of the mounting sleeve facing the side of the roller rust removal assembly, a reinforcing rod fixedly connected to the connecting rod at one bottom end of the mounting sleeve, a connecting part at one inclined end of the connecting rod, the connecting part being perpendicular to the drive shaft, and the connecting part being fixedly connected to the cleaning brush.

[0008] As a preferred embodiment of this application, the connecting frame is arranged in a circular array with the mounting sleeve as the center.

[0009] As a preferred embodiment of this application, support rods are provided on both sides of the connecting portion, and the support rods extend to the two ends of the cleaning brush respectively.

[0010] As a preferred embodiment of this application, the roller rust removal assembly includes: a telescopic seat, one side of which is provided with an installation tube in an inclined shape, a spring being sleeved on the installation tube, and a connecting tube being movably connected inside the installation tube, a roller seat being fixedly connected to the top of the connecting tube, the roller seat being fixed to the spring, and a grinding roller being rotatably provided inside the roller seat, the rotation direction of the grinding roller being consistent with the rotation direction of the rotating motor.

[0011] As a preferred embodiment of this application, the rotating motor is a dual-shaft motor, and the drive shaft of the rotating motor facing the chip collection box is provided with chip dispersion slurry.

[0012] As a preferred embodiment of this application, the outer end face of the opening of the chip collection box is provided with an enclosing edge that surrounds the rust removal unit, and the cross-sectional area of ​​the enclosing edge is less than the working coverage area of ​​the rust removal unit.

[0013] As a preferred embodiment of this application, a filter screen is also provided at the opening of the chip collection box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This application sets a chip collection box at one end of the mounting base and a rust removal unit at the other end, with the opening of the chip collection box facing the rust removal unit. This layout allows the iron filings generated during the rust removal process to naturally fall towards the chip collection box, facilitating the collection of iron filings, preventing them from flying everywhere, maintaining a clean working environment, and reducing subsequent cleaning work; the rust removal unit is comprehensively designed and has a good rust removal effect: Roller rust removal components: Several roller rust removal components are arranged in a ring on the outer wall of the storage box. This design can remove rust from the metal surface from multiple directions, increasing the contact area and range of action for rust removal, improving rust removal efficiency, and more comprehensively removing rust from the metal surface; Rust removal brush components: A rust removal brush component is set at one end of the storage box and is driven to rotate by a rotating motor inside the storage box. The rust-removing brush assembly can finely grind and clean metal surfaces, further removing residual rust and dirt. Working in conjunction with the roller rust-removing assembly, it achieves a multi-layered rust removal effect, leaving the metal surface smoother and cleaner. Its optimized shape design facilitates iron filings collection: the storage box and the chip collection box are coaxially arranged in a cylindrical structure, with the cross-sectional area of ​​the storage box being less than or equal to the cross-sectional area of ​​the opening in the chip collection box used to collect axial iron filings. This design ensures that iron filings generated during the rust removal process can smoothly pass through the space between the storage box and the chip collection box into the chip collection box, preventing iron filings from accumulating around the storage box and unable to enter the chip collection box, thus improving the efficiency and reliability of iron filings collection. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the structure of the drum rust removal assembly in this utility model; Figure 3 This is a schematic diagram of the rust removal brush assembly in this utility model; Figure 4 This is a schematic diagram showing the installation position of the rotary motor in this utility model; In the diagram: 1. Mounting base; 2. Chip collection box; 3. Rust removal unit; 31. Storage box; 32. Roller rust removal assembly; 321. Telescopic seat; 322. Mounting pipe; 323. Connecting pipe; 324. Roller seat; 325. Abrasive roller; 33. Spring; 34. Rust removal brush assembly; 341. Drive shaft; 342. Rotating stop ring; 343. Connecting frame; 3431. Mounting sleeve; 3432. Connecting rod; 3433. Reinforcing rod; 3434. Connecting part; 344. Support rod; 345. Cleaning brush; 4. Rotating motor; 41. Rotating shaft; 5. Chip dispersion slurry; 6. Enclosing edge; 7. Filter screen. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] The existing device has the following drawbacks: it requires a traction rope to pull the entire device to move it, which means that the traction rope needs to be passed through the round pipe before use. For longer round pipes, this increases the difficulty of passing the traction rope through the pipe. The rust removal device does not limit the grinding plate, which causes the grinding plate to squeeze the inner wall of the round pipe. Furthermore, because the rust removal process cannot be observed, it is easy to over-grind or under-grind. The position of the abrasive layer is fixed, which can easily cause jamming during grinding.

[0018] Therefore, this application provides a rust removal device for metal surfaces, such as... Figure 1-4 The device includes: a mounting base 1, a chip collection box 2 at one end of the mounting base 1, and a rust removal unit 3 at the other end. The opening of the chip collection box 2 faces the rust removal unit 3. The rust removal unit 3 includes: a storage box 31 fixedly connected to the mounting base 1, a plurality of roller rust removal components 32 arranged in a ring on the outer wall of the storage box 31, a rust removal brush assembly 34 at one end of the storage box 31, and a rotary motor 4 (operated by an external 380V voltage) inside the storage box 31 to drive the rust removal brush assembly 34 to rotate. The storage box 31 and the chip collection box 2 are coaxially arranged in a cylindrical structure, and the cross-sectional area of ​​the storage box 31 is less than or equal to the cross-sectional area of ​​the opening of the chip collection box 2 for collecting axial iron chips.

[0019] The working principle of the above embodiment is as follows: the rust removal unit 3 and the chip collection box 2 are arranged in a coaxial cylindrical shape. Iron chips fall directly into the chip collection box 2 with a larger opening under the dual action of centrifugal force and gravity. The roller rust removal component 32 and the rust removal brush component 34 form a "multi-directional coupling" rust removal path, which can complete rough grinding and fine brushing in one go. The advantage of this structure is that there is no secondary scattering of iron chips in the axial direction, and the PM10 on site is reduced by 55%. In actual operation, the following models can be used to achieve the following: the mounting base 1 is a SUS304 welded frame (model: KZ-1200×350×180 mm), and the storage box 31 and the chip collection box 2 are made of 2 mm cold-rolled plate (model: KZ-CT350×450). Data: the outer diameter of the storage box 31 is 350 mm, the inner diameter of the opening of the chip collection box 2 is 420 mm (meeting the requirement that the cross-section of the storage box 31 is ≤ the cross-section of the opening), and the weight of the whole machine is 38 kg.

[0020] The rust removal brush assembly 34 includes: a drive shaft 341 connected to the rotating shaft 41 of the rotating motor 4; a rotating stop ring 342 on the drive shaft 341; a spring 33 sleeved on the drive shaft 341, with one end of the spring 33 abutting against the rotating stop ring 342 and the other end abutting and fixed at a connecting bracket 343 at the end of the drive shaft 341; the pre-compression of the spring 33 ensures that the cleaning brush 345 is always in close contact with the curved surface, and the rotating stop ring 342 limits the maximum compression, ensuring that the brush bristles maintain a contact pressure of 2.5 N / cm² even after 2 mm of wear; the extended end of the connecting bracket 343 is provided with the cleaning brush 345; the working surface of the cleaning brush 345 is coaxial and in the same direction as the drive shaft 341 and the storage box 31, thus extending the brush bristle life from the traditional 30 h to 65 h; in actual operation, the drive shaft 341 is 40Cr tempered steel (model: KZ-ZT-25×380). The spring 33 is made of 65Mn wire with a diameter of 2 mm, a free length of 55 mm, and a preload of 8 mm. The cleaning brush 345 uses DuPont 612 nylon filament (model: KZ-BR-80 mm) with a diameter of 0.3 mm, a bristle density of 120 tufts / cm², a brush head speed of 800 rpm, and an outer diameter of 80 mm. It achieves a rust removal rate of 93.4% for Class C rust surfaces in a single pass.

[0021] The connecting frame 343 includes: a mounting sleeve 3431 fixed on the drive shaft 341, one bottom end of the mounting sleeve 3431 abutting against the spring 33; at least one connecting rod 3432 is inclined at the top end of the mounting sleeve 3431 towards the roller rust removal assembly 32, the connecting rod 3432 is inclined outward at 30°, so that the cleaning brush 345 forms a "beveled cleaning" trajectory, the iron filings are forced to be guided to the chip collection box 2, the roots of the brush bristles do not accumulate chips, and the clogging failure rate is reduced to zero; a reinforcing rod 3433 is provided on the side of the bottom end of the mounting sleeve 3431 and is fixedly connected to the connecting rod 3432; a connecting part 3434 is provided at the inclined extension end of the connecting rod 3432, the connecting part 3434 is set perpendicular to the drive shaft 341, and the connecting part 3434 is fixedly connected to the cleaning brush 345. In actual operation, the mounting sleeve 3431 is made of 45# steel precision machined (model: KZ-AS-Ø25×35). Both connecting rod 3432 and reinforcing rod 3433 are made of 6061-T6 aluminum profile (model: KZ-LG-8×8 mm). The inclination angle of connecting rod 3432 is 3°, the weld angle between reinforcing rod 3433 and connecting rod 3432 is 45°, and the weld strength is ≥240 MPa.

[0022] The connecting frame 343 is arranged in a circular array with the mounting sleeve 3431 as the center. The four sets of connecting frames 343 are arranged in a 90° array to achieve 360° uniform load, avoid eccentric vibration, and the overall machine amplitude is <0.5 mm (ISO 10816-1, Class A). The residual unbalance in the dynamic balance test is ≤0.8 g·cm.

[0023] Support rods 344 are provided on both sides of the connecting part 3434. The two support rods 344 form a "triangular stability" structure, so the brush head does not sway at high speed. The support rods 344 extend to the two ends of the cleaning brush 345 respectively. With this structure, the wear uniformity of the brush head edge is improved by 40%. The support rod is a stainless steel 304 round rod (model: KZ-SUP-Ø6×100 mm), and the two ends are locked with the brush head end cap with M4 threads. The sway of the brush head end is reduced from 0.9 mm to 0.3 mm.

[0024] The roller rust removal assembly 32 includes: a telescopic base 321, one side of which is inclined and has an installation tube 322. A spring 33 is sleeved on the installation tube 322, and a connecting tube 323 is movably connected inside the installation tube 322. A roller base 324 is fixedly connected to the top of the connecting tube 323. The roller base 324 is fixed to the spring 33. The inclined telescopic base 321 and spring 33 float, allowing the abrasive roller 325 to adapt to the undulations of the board surface. The abrasive roller 325 rotates in the same direction as the brush head, producing a combined "shearing + grinding" effect. The abrasive roller 325 is rotatably mounted inside the roller base 324, and the rotation direction of the abrasive roller 325 is consistent with the rotation direction of the rotating motor 4. This structure can still effectively remove rust from areas with weld seam height within 3 mm. The telescopic base 321 is an aluminum alloy CNC integral part (model: KZ-TS-30° inclined), and the spring 33 is SWOSC-V with a wire diameter of 1.2 mm. mm; the 325 abrasive roller uses 3M 777F abrasive belt, grit size P80, roller outer diameter 60 mm × width 40 mm (model: KZ-RT-60×40), roller linear speed 15 m / s, single-pass rust removal depth 20 µm, surface roughness Ra 1.8 µm.

[0025] The rotating motor 4 is a dual-shaft motor. The drive shaft 341 of the rotating motor 4 facing the chip collection box 2 is equipped with a chip dispersion impeller 5. In this embodiment, the rear shaft directly drives the chip dispersion impeller 5 to break up the iron filings falling into the chip collection box 2 again and distribute them evenly, preventing local accumulation and clogging of the filter screen 7. The effective volume utilization rate of the chip collection box 2 is increased from 65% to 92%. The dual-shaft motor is Delta ECMA-C20807RS (750 W, 3000 rpm, rated torque 2.39 N·m). The chip dispersion impeller 5 is a SUS304 four-bladed oblique impeller (model: KZ-MP-Ø120 mm, impeller angle 30°). After the chips are dispersed, the volume is reduced to 1 / 3 of the original volume, and the replacement cycle of the filter screen 7 is extended from 4 hours to 10 hours.

[0026] The chip collection box 2 has an enclosing edge 6 at its outer end face that faces the rust removal unit 3. The cross-sectional area of ​​the enclosing edge 6 is less than the working coverage area of ​​the rust removal unit 3. The enclosing edge 6 forms a "trumpet mouth" airflow guide, and iron filings are sucked into the chip collection box 2 by the negative pressure zone. At the same time, the outer diameter of the enclosing edge 6 is smaller than the working coverage area, avoiding interference with the workpiece. On-site dust is reduced by 70%. The enclosing edge 6 is a 2 mm SUS304 bent part (model: KZ-FL-Ø380 mm, height 50 mm). The maximum operating span difference between the enclosing edge 6 and the rust removal unit 3 is 20 mm (coverage area difference ≈ 12%), and the suction inlet wind speed is 7.2 m / s.

[0027] A filter screen 7 is also provided at the opening of the chip collection box 2. In this embodiment, the 40-mesh stainless steel filter screen 7 intercepts large iron filings to prevent them from entering the subsequent dust removal fan; at the same time, it allows fine dust to pass through, maintains airflow, and doubles the life of the fan blades. The filter screen 7 is made of SUS304, 40 mesh, with a wire diameter of 0.25 mm and an effective filtration area of ​​0.12 m² (model: KZ-FIL-40M). The pressure drop is 120 Pa at a wind speed of 7 m / s, and it allows dust particles with a diameter of <380 µm to pass through.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rust removal device for metal surfaces, characterized in that, include: Mounting base (1), with a chip collection box (2) at one end and a rust removal unit (3) at the other end. The opening of the chip collection box (2) faces the rust removal unit (3). The rust removal unit (3) includes a storage box (31) fixedly connected to the mounting base (1). Several roller rust removal components (32) are arranged in a ring on the outer wall of the storage box (31). A rust removal brush assembly (34) is provided at one end of the storage box (31). A rotating motor (4) is provided inside the storage box (31) to drive the rust removal brush assembly (34) to rotate. The storage box (31) and the chip collection box (2) are coaxially arranged in a cylindrical structure. The cross-sectional area of ​​the storage box (31) is less than or equal to the cross-sectional area of ​​the opening of the chip collection box (2) for collecting axial iron chips.

2. The metal surface rust removal device as described in claim 1, characterized in that, The rust removal brush assembly (34) includes: a transmission shaft (341) connected to the rotating shaft (41) of the rotating motor (4), a rotating stop ring (342) is provided on the transmission shaft (341), a spring (33) is sleeved on the transmission shaft (341), one end of the spring (33) abuts against the rotating stop ring (342), and the other end abuts against and is fixed at the connecting bracket (343) provided at the end of the transmission shaft (341), and a cleaning brush (345) is provided at the extended end of the connecting bracket (343), and the working surface of the cleaning brush (345) is coaxial and in the same direction as the transmission shaft (341) and the storage box (31).

3. The metal surface rust removal device as described in claim 2, characterized in that, The connecting frame (343) includes: a mounting sleeve (3431) fixed on the drive shaft (341), one bottom end of the mounting sleeve (3431) abutting against the spring (33), one top end of the mounting sleeve (3431) inclined towards the side of the roller rust removal assembly (32) and a reinforcing rod (3433) fixedly connected to the connecting rod (3432) on the side of the bottom end of the mounting sleeve (3431), and a connecting part (3434) at one end of the inclined extension of the connecting rod (3432), the connecting part (3434) being perpendicular to the drive shaft (341) and fixedly connected to the cleaning brush (345).

4. The metal surface rust removal device as described in claim 3, characterized in that, The connecting frame (343) is arranged in a circular array with the mounting sleeve (3431) as the center.

5. A metal surface rust removal device as described in claim 4, characterized in that, Support rods (344) are provided on both sides of the connecting part (3434), and the support rods (344) extend to the two ends of the cleaning brush (345) respectively.

6. A metal surface rust removal device as described in claim 1 or 5, characterized in that, The roller rust removal assembly (32) includes: a telescopic seat (321), one side of which is inclined and has an installation tube (322), a spring (33) is sleeved on the installation tube (322), and a connecting tube (323) is movably connected inside the installation tube (322). A roller seat (324) is fixedly connected to the top of the connecting tube (323), the roller seat (324) is fixed to the spring (33), and a sanding roller (325) is rotatably provided inside the roller seat (324). The rotation direction of the sanding roller (325) is the same as the rotation direction of the rotating motor (4).

7. A metal surface rust removal device as described in claim 6, characterized in that, The rotating motor (4) is a dual-shaft motor, and the drive shaft (341) of the rotating motor (4) facing the chip collection box (2) is provided with chip dispersion slurry (5).

8. A metal surface rust removal device as described in claim 7, characterized in that, The chip collection box (2) has an enclosing edge (6) at the outer end face of the opening, which encloses the rust removal unit (3). The cross-sectional area of ​​the enclosing edge (6) is less than the working coverage area of ​​the rust removal unit (3).

9. A metal surface rust removal device as described in claim 8, characterized in that, A filter screen (7) is also provided at the opening of the chip collection box (2).

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