Rust removal device and method for bar-shaped workpieces

Abstract

The application discloses a polishing rust removal device and method for rod-shaped workpieces, and belongs to the technical field of workpiece rust removal. The device comprises a transmission assembly arranged below the rod-shaped workpieces, support frames arranged on the two sides of the transmission assembly, a driving unit connected to the transmission assembly, and a polishing assembly arranged above the transmission assembly. The transmission assembly comprises guardrail plates arranged in parallel with each other, and a plurality of parallel roller tracks rotatably installed between the two guardrail plates. One end of the roller track is connected to the driving unit through a chain, and adjacent roller tracks are connected to each other through chains. The application drives multiple rod-shaped workpieces to rotate synchronously through the friction of the roller tracks, and realizes automatic and continuous polishing by cooperating with the polishing head above. A plurality of workpieces can be processed simultaneously at a time, and a batch of rust removal operations can be completed in 3-5 minutes. The device does not need manual polishing tools in the whole process, greatly reduces the labor intensity of workers, and significantly improves the rust removal efficiency.

Description

Technical Field

[0001] This invention belongs to the field of workpiece rust removal technology, and particularly relates to a grinding and rust removal device and method for rod-shaped workpieces. Background Technology

[0002] Before new steel grades are put into mass production, they must undergo multiple furnace and small-scale tests to produce small steel ingots, which are then rolled or forged to sample for various performance tests and analyses. Product performance is not only affected by the research and development process, but the purity control during the trial production process also has a significant impact on the test data.

[0003] Bar-shaped industrial pure iron is the main raw material for steelmaking experiments. Bar-shaped industrial pure iron inevitably rusts. The oxidizing rust layer reduces the recovery rate of alloying elements and increases the content of non-metallic inclusions. The traditional method is to manually polish the rust layer with sandpaper. However, since each experiment requires dozens or even hundreds of bars of industrial pure iron, manual polishing is labor-intensive and inefficient. Therefore, there is an urgent need for a polishing and rust removal device and method for bar-shaped industrial pure iron. Summary of the Invention

[0004] To address some or all of the technical problems existing in the prior art, the present invention provides a grinding and rust removal device and method for rod-shaped workpieces.

[0005] In one aspect of the present invention, a grinding and rust removal device for a rod-shaped workpiece is provided, comprising a transmission assembly disposed below the rod-shaped workpiece, support frames disposed on both sides of the transmission assembly, a drive unit connected to the transmission assembly, and a grinding assembly disposed above the transmission assembly, wherein: The transmission assembly includes parallel guardrails and multiple parallel roller tracks rotatably installed between the two guardrails. One roller track is connected to the drive unit via a chain, and adjacent roller tracks are connected to each other via chains. The grinding assembly includes a mesh frame mounted above the rod-shaped workpiece and multiple grinding heads mounted on the mesh frame. The multiple grinding heads are evenly distributed horizontally on the mesh frame. Both support frames have multiple height adjustment slots on the same side in the vertical direction. The end of the mesh frame is engaged between two height adjustment slots.

[0006] Furthermore, in the above-mentioned grinding and rust removal device for rod-shaped workpieces, the rod-shaped workpiece is rod-shaped industrial pure iron.

[0007] Furthermore, in the above-mentioned grinding and rust removal device for rod-shaped workpieces, the outer diameter of the roller is 68-72mm, the axial distance between two adjacent rollers is 95-105mm, the length of a single roller is 0.7-1m, the number of rollers is 10-15, and the surface roughness Ra of the outer wall of the roller is 200-400μm.

[0008] Furthermore, in the above-mentioned grinding and rust removal device for rod-shaped workpieces, the guardrail plate has a height of 0.2-0.3m and a thickness of 20-30mm.

[0009] Furthermore, in the aforementioned grinding and rust removal device for rod-shaped workpieces, the grinding head uses a bundle of steel wire. The cross-section of a single wire is rectangular, with a thickness of 0.5-1 mm and a width of 3-5 mm. The Brinell hardness of the wire is 160-200 HB, and the bulk density of the bundled steel wire is 3-5 g / cm³. 3 The volume is 20-40cm 3 The number of grinding heads is 100-300.

[0010] Furthermore, in the aforementioned grinding and rust removal device for rod-shaped workpieces, the mesh fixing frame is constructed by perpendicularly intersecting and welding longitudinal steel bars and transverse steel bars. The longitudinal steel bars are arranged in parallel along a direction perpendicular to the axis of the roller conveyor, with a total of 30-40 bars. The length of a single longitudinal steel bar is 140-160cm, and the spacing between adjacent longitudinal steel bars is 20-30mm. The transverse steel bars are arranged in parallel along a direction parallel to the axis of the roller conveyor, with a total of 10-20 bars. The spacing between adjacent transverse steel bars is equal to the axial spacing of the roller conveyor, and the length of a single transverse steel bar is 140-200cm. The grinding head is fixed to the intersection of the longitudinal and transverse steel bars by iron wire with a diameter of 2-3mm.

[0011] Furthermore, in the above-mentioned grinding and rust removal device for rod-shaped workpieces, the support frame is composed of four vertically arranged steel bars with a diameter of 20-30mm and a length of 80-120cm. The four vertical steel bars are arranged on both sides of the transmission component, with two bars on each side. On the vertical steel bars of the support frame on each side, four to six inclined steel bars are welded in the vertical direction. The diameter of the inclined steel bars is 6-10mm and the length is 100-150mm. The gap between two adjacent inclined steel bars forms the height adjustment groove, and the width of a single height adjustment groove is 6-8mm.

[0012] Furthermore, the above-mentioned grinding and rust removal device for rod-shaped workpieces is suitable for rod-shaped workpieces with a diameter of 48-52mm and a length of 0.5-0.6m.

[0013] Furthermore, in the aforementioned grinding and rust removal device for rod-shaped workpieces, the drive unit is an electric motor.

[0014] In another aspect of the invention, a method for grinding and removing rust from rod-shaped workpieces is also provided, comprising: Step 1: Place the rod-shaped workpiece to be derusted in the gap between two adjacent rollers, so that the rod-shaped workpiece is directly below the grinding head of the grinding assembly. Step 2: Adjust the position of the mesh fixing frame in the height adjustment groove of the support frame along the vertical direction, and adjust the contact pressure between the grinding head and the surface of the rod-shaped workpiece; Step 3: Turn on the drive unit. The drive unit drives the end rollers to rotate through the chain. Adjacent rollers are synchronously driven by the chain, so that all rollers rotate in the same direction. Step 4: The rotating roller conveyor drives the rod-shaped workpiece to rotate around its own axis through the friction between itself and the workpiece. The outer surface of the workpiece continuously rubs against multiple grinding heads fixed on the mesh frame, thus completing the surface rust removal operation of the workpiece.

[0015] The grinding and rust removal apparatus and method for rod-shaped workpieces of the present invention have the following advantages and positive effects: (1) The core components of this invention consist only of a roller conveyor structure and a mesh grinding component. For steel pilot workshops equipped with rolling mill roller conveyors and drive devices, the existing roller conveyors and drive devices can be directly reused without the need to purchase additional large power devices. The grinding component can be made by binding and welding ordinary steel bars and steel wire grinding heads. The processing difficulty is low and the overall investment cost is extremely low. It is particularly suitable for the test unit to build and use on its own. The roller conveyor friction drives multiple rod-shaped workpieces to rotate synchronously. With the grinding head covering the top, automatic continuous grinding is achieved. Multiple workpieces can be processed at the same time. A batch of rust removal operations can be completed in 3-5 minutes. No manual hand-held grinding tools are required throughout the process, which greatly reduces the labor intensity of the operators and significantly improves the rust removal efficiency. (2) The present invention can flexibly adjust the vertical height of the grinding component through multiple sets of height adjustment grooves on the support frame, thereby changing the contact pressure between the grinding head and the workpiece. It can be adapted to rod-shaped workpieces of different diameters, and the grinding force can be adjusted according to the thickness of the rust layer. While ensuring the rust removal effect, it avoids excessive grinding and damage to the workpiece substrate. The rust removal quality is stable and the maintenance is convenient. The grinding head with a ball-shaped steel wire is evenly distributed on the mesh fixed frame. During the rotation of the workpiece, it is evenly contacted and ground in the whole circumference. The rust removal surface has good consistency. The grinding head is fixed by binding with iron wire. It can be replaced separately after wear. The maintenance cost is low and the operation is convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the transmission component in the grinding and rust removal device for rod-shaped workpieces of the present invention; Figure 2 This is a schematic diagram of the grinding component in the grinding and rust removal device for rod-shaped workpieces of the present invention; Figure 3 This is a schematic diagram of the structure of the grinding and rust removal device for rod-shaped workpieces according to the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Roller conveyor; 2. Guardrail; 3. Grinding head; 4. Mesh fixing frame; 5. Rod-shaped workpiece; 6. Chain; 7. Support frame; 8. Height adjustment groove; 9. Drive unit. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] This invention provides a grinding and rust removal device and method for rod-shaped workpieces, such as... Figures 1 to 3 As shown, the grinding and rust removal device for rod-shaped workpieces includes a transmission assembly disposed below the rod-shaped workpiece 5, support frames 7 disposed on both sides of the transmission assembly, a drive unit 9 connected to the transmission assembly, and a grinding assembly disposed above the transmission assembly, wherein: The transmission assembly includes parallel guardrail plates 2 and multiple parallel roller tracks 1 rotatably installed between two guardrail plates 2. One end of the roller track 1 is connected to the drive unit 9 via a chain 6, and adjacent roller tracks 1 are connected to each other via a chain 6. The grinding assembly includes a mesh frame 4 set above the rod-shaped workpiece 5 and multiple grinding heads 3 set on the mesh frame 4. The multiple grinding heads 3 are evenly distributed in the horizontal direction on the mesh frame 4. Multiple height adjustment slots 8 are set in the vertical direction on the same side of the two support frames 7. The end of the mesh frame 4 is locked between the two height adjustment slots 8.

[0020] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the rod-shaped workpiece 5 is rod-shaped industrial pure iron.

[0021] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the outer diameter of the roller 1 is 68-72mm, the axial distance between two adjacent rollers 1 is 95-105mm, the length of a single roller 1 is 0.7-1m, the number of rollers 1 is 10-15, and the surface roughness Ra of the outer wall of the roller 1 is 200-400μm.

[0022] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the guardrail plate 2 has a height of 0.2-0.3m and a thickness of 20-30mm.

[0023] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the grinding head 3 uses a bundle of steel wire. The cross-section of a single steel wire is rectangular, with a thickness of 0.5-1 mm and a width of 3-5 mm. The Brinell hardness of the steel wire is 160-200 HB, and the bulk density of the bundled steel wire is 3-5 g / cm³. 3 The volume is 20-40cm 3 The number of grinding heads is 100-300.

[0024] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the mesh fixing frame 4 is composed of longitudinal steel bars and transverse steel bars that intersect perpendicularly and are welded together. The longitudinal steel bars are arranged in parallel along the direction perpendicular to the axis of the roller conveyor 1, with a total of 30-40 bars. The length of a single longitudinal steel bar is 140-160cm, and the spacing between adjacent longitudinal steel bars is 20-30mm. The transverse steel bars are arranged in parallel along the direction parallel to the axis of the roller conveyor 1, with a total of 10-20 bars. The spacing between adjacent transverse steel bars is equal to the axial spacing of the roller conveyor 1, and the length of a single transverse steel bar is 140-200cm. The grinding head 3 is fixed to the intersection of the longitudinal and transverse steel bars by iron wire with a diameter of 2-3mm.

[0025] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the support frame 7 is composed of four vertically arranged steel bars with a diameter of 20-30mm and a length of 80-120cm. The four vertical steel bars are arranged on both sides of the transmission component, with two bars on each side. On the vertical steel bars of the support frame 7 on each side, four to six inclined steel bars are welded obliquely in the vertical direction. The diameter of the inclined steel bars is 6-10mm and the length is 100-150mm. The gap between two adjacent inclined steel bars forms the height adjustment groove 8, and the width of a single height adjustment groove 8 is 6-8mm.

[0026] As one specific embodiment, the grinding and rust removal device for rod-shaped workpieces of the present invention is suitable for rod-shaped workpieces 5 with a diameter of 48-52mm and a length of 0.5-0.6m.

[0027] In one specific embodiment, in the grinding and rust removal device for rod-shaped workpieces of the present invention, the drive unit 9 is an electric motor.

[0028] On the other hand, the grinding and rust removal method for rod-shaped workpieces of the present invention is implemented using the above-mentioned grinding and rust removal device for rod-shaped workpieces, and specifically includes the following steps: Step 1: Place the rod-shaped workpiece 5 to be derusted in the gap between two adjacent roller tracks 1, so that the rod-shaped workpiece 5 is directly below the grinding head 3 of the grinding assembly. Step 2: Adjust the position of the mesh fixing frame 4 in the height adjustment groove 8 of the support frame 7 along the vertical direction, and adjust the contact pressure between the grinding head 3 and the surface of the rod-shaped workpiece 5. Step 3: Turn on the drive unit 9. The drive unit 9 drives the end roller conveyor 1 to rotate through the chain 6. Adjacent roller conveyors 1 are synchronously transmitted through the chain 6, so that all roller conveyors 1 rotate in the same direction. Step 4: The rotating roller 1 drives the rod-shaped workpiece 5 to rotate around its own axis through the friction between itself and the rod-shaped workpiece 5. The outer surface of the rod-shaped workpiece 5 continuously rubs against the multiple grinding heads 3 fixed on the mesh frame 4, thus completing the surface rust removal operation of the rod-shaped workpiece 5.

[0029] The following detailed description of the grinding and rust removal apparatus and method for rod-shaped workpieces of the present invention, with reference to embodiments, provides a comprehensive overview. Example 1 The embodiment provides a grinding and rust removal device for rod-shaped workpieces, suitable for surface rust removal operations of rod-shaped industrial pure iron workpieces with a diameter of 50mm and a length of 0.5m.

[0030] 1. Transmission component structure The transmission assembly is located below the rod-shaped workpiece 5, and is used to support the workpiece and drive its rotation. For example... Figure 2 As shown, the transmission assembly includes two parallel guardrail plates 2 and 12 roller conveyors 1 rotatably installed between the two guardrail plates 2.

[0031] All roller conveyors 1 have parallel axes and lie in the same horizontal plane. Each roller conveyor 1 has an outer diameter of 70mm, a length of 0.8m, and is made of ordinary carbon steel. The distance between the axes of two adjacent roller conveyors 1 is 100mm. The 12 roller conveyors 1 are arranged at equal intervals, forming the roller conveyor surface that supports the rod-shaped workpiece 5. The outer wall of the roller conveyor 1 is not smoothed; the surface roughness Ra is controlled between 200-400μm to increase the coefficient of friction between the outer wall of the roller conveyor 1 and the rod-shaped workpiece 5, ensuring that the workpiece can be stably rotated through friction.

[0032] Two guardrail plates 2 are respectively installed at both ends of the roller conveyor 1, arranged perpendicular to the axis of the roller conveyor 1, to block the rod-shaped workpiece 5 and prevent it from rolling off the roller conveyor 1 during rotation. The guardrail plates 2 are made of ordinary steel plate, with a height of 0.25m and a thickness of 20mm. The length matches the total width of the roller conveyor 1. The two ends of the roller conveyor 1 are rotatably installed on the guardrail plates 2 through bearings.

[0033] The drive unit 9 uses a motor and is located at one end of the transmission assembly. The extended shaft of the first roller 1 at the very end is connected to the output shaft of the motor via a chain 6. Each pair of adjacent rollers 1 is connected to each other via a sprocket at the end of the roller 1 and a chain 6. When the motor starts, power is transmitted to the first roller 1 via the chain 6, and then progressively transmitted through the chains 6 between each roller 1, ultimately achieving the same direction and speed rotation of all 12 rollers 1. In practical applications, the drive unit 9 can directly reuse the drive motor of the existing rolling mill roller 1 in the workshop, eliminating the need for additional power equipment.

[0034] 2. Grinding the component structure The grinding assembly is positioned directly above the transmission assembly and is used to perform friction rust removal on the rod-shaped workpiece 5 below. The grinding assembly includes a mesh holder 4 and 300 grinding heads 3 fixed on the mesh holder 4.

[0035] The mesh support frame 4 is constructed by perpendicularly welding longitudinal and transverse steel bars, forming a planar mesh structure. Thirty longitudinal steel bars are arranged parallel to each other along the direction perpendicular to the axis of roller conveyor 1 (i.e., the length of the workpiece), with each bar being 140cm long and 6mm in diameter, and spaced 20mm apart. Ten transverse steel bars are arranged parallel to the axis of roller conveyor 1, with each bar also 140cm long and 6mm in diameter, and spaced 100mm apart, consistent with the axial spacing of roller conveyor 1. The longitudinal and transverse steel bars are welded together at their intersections to form a stable mesh frame.

[0036] Each grinding head 3 employs a clustered steel wire structure, composed of multiple steel wires. Each individual wire has a rectangular cross-section with dimensions of 0.5mm thickness and 3mm width. The wire has a Brinell hardness of 160-180HB, combining rust removal capability with wear resistance, and is unlikely to scratch the workpiece substrate. The bulk density of a single grinding head 3 is 3-4 g / cm³. 3 The volume is 20-30cm 3The overall shape is loose and fluffy, allowing for flexible contact with the workpiece surface. 300 grinding heads 3 are individually tied and fixed to each intersection of the longitudinal and transverse steel bars by iron wires with a diameter of 3mm, so that the grinding heads 3 are evenly distributed throughout the lower area of ​​the entire mesh fixing frame 4, ensuring that the grinding heads 3 can contact the workpiece along its entire length.

[0037] 3. Support frame 7 and height adjustment structure Support frames 7 are located on both sides of the transmission assembly to support the entire grinding assembly and provide height adjustment. Support frames 7 consist of four vertically arranged support steel bars, two on each side, positioned at the four corners of the transmission assembly. The support steel bars are 20mm in diameter and 100cm in length, and their bottoms can be placed directly on the ground or fixed to a workshop platform.

[0038] On the inner side of the two supporting steel bars on each side, five limiting steel bars are welded obliquely in the vertical direction. The diameter of the limiting steel bars is 6mm and the length is 150mm. The gap between two adjacent limiting steel bars forms a height adjustment groove 8. The groove width of a single height adjustment groove 8 is 6mm, forming a total of 5 different height adjustment positions. The 5 height adjustment grooves 8 are arranged at equal intervals in the vertical direction. The two ends of the horizontal steel bars of the mesh fixing frame 4 can be inserted into the corresponding height adjustment grooves 8 to fix the height of the grinding component; the obliquely set limiting steel bars can form a locking groove to prevent the mesh fixing frame 4 from slipping during operation.

[0039] In this embodiment, when the mesh fixing frame 4 is engaged in the third height adjustment slot 8 at the middle position in the vertical direction, the bottom of the grinding head 3 is exactly abutting against the upper surface of the rod-shaped workpiece 5 with a diameter of 50mm below, forming initial contact pressure. By engaging the mesh fixing frame 4 in higher or lower adjustment slots, the contact pressure between the grinding head 3 and the workpiece can be increased or decreased to adapt to workpieces of different diameters or adjust the rust removal intensity.

[0040] 4. Grinding and rust removal process The specific operation process for removing rust from rod-shaped workpiece 5 using the apparatus of this embodiment is as follows: Loading and positioning: Place 10 bar-shaped industrial pure iron workpieces to be derusted one by one in the gap between two adjacent roller tracks 1, one workpiece in each gap, so that the axis of the workpiece is parallel to the axis of roller track 1, and all workpieces are within the coverage of the upper grinding head 3.

[0041] Pressure adjustment: According to the workpiece diameter and rust layer thickness, the two ends of the mesh fixing frame 4 are inserted into the height adjustment groove 8 of the corresponding height; in this embodiment, the middle position is inserted so that the grinding head 3 is in moderate contact with the workpiece surface, ensuring that the contact pressure can effectively remove rust through friction without locking up and hindering the rotation of the workpiece.

[0042] Start the transmission: Turn on the motor of the drive unit 9. The motor drives the first roller 1 at the end to rotate through the chain 6. Then, through the chain 6 between each roller 1, all 12 rollers 1 rotate synchronously in the same direction.

[0043] Automatic rust removal: The rotating roller conveyor 1 drives the rod-shaped workpiece 5 to rotate uniformly around its own axis through the friction between the outer wall and the workpiece. During the rotation, the entire outer circumference of the workpiece continuously rubs against the fixed grinding head 3 above, gradually removing the oxide rust layer through the mechanical grinding action of the steel wire. After grinding for 3-5 minutes, the rust removal operation of the entire batch of workpieces is completed. After turning off the motor, the workpieces can be removed.

[0044] If the rust removal effect is insufficient during the operation, the mesh fixing frame 4 can be adjusted down one position to increase the contact pressure; if the workpiece rotation is obstructed, the position can be adjusted up to reduce the pressure. The adjustment method is simple and quick.

[0045] In summary, compared with the prior art, the grinding and rust removal device and method for rod-shaped workpieces of the present invention have the following advantages and positive effects: (1) The core components of this invention consist only of the roller conveyor 1 transmission structure and the mesh grinding component. For steel pilot workshops equipped with rolling mill roller conveyor 1 and drive device, the existing roller conveyor 1 and drive device can be directly reused without the need to purchase a large power device. The grinding component can be made by binding and welding ordinary steel bars and steel wire grinding head 3. The processing difficulty is low and the overall investment cost is extremely low. It is especially suitable for the test unit to build and use on its own. The roller conveyor 1 drives multiple rod-shaped workpieces 5 to rotate synchronously. With the grinding head 3 covering the top, automatic continuous grinding is achieved. Multiple workpieces can be processed at the same time. A batch of rust removal operation can be completed in 3-5 minutes. No manual hand-held grinding tools are required throughout the process, which greatly reduces the labor intensity of the operators and significantly improves the rust removal efficiency. (2) The present invention can flexibly adjust the vertical height of the grinding component through multiple sets of height adjustment grooves 8 on the support frame 7, thereby changing the contact pressure between the grinding head 3 and the workpiece. It can be adapted to rod-shaped workpieces 5 of different diameters, and the grinding force can be adjusted according to the thickness of the rust layer. While ensuring the rust removal effect, it avoids excessive grinding and damage to the workpiece substrate. The rust removal quality is stable and the maintenance is convenient. The ball-shaped steel wire grinding head 3 is evenly and densely distributed on the mesh fixing frame 4. During the rotation of the workpiece, it makes uniform contact grinding in the whole circumference, resulting in good consistency of the rust removal surface. The grinding head 3 is fixed by iron wire binding. It can be replaced individually after wear, resulting in low maintenance cost and convenient operation.

[0046] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used 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. Meanwhile, 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 a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding and rust removal device for rod-shaped workpieces, characterized in that, It includes a transmission assembly positioned below the rod-shaped workpiece, support frames positioned on both sides of the transmission assembly, a drive unit connected to the transmission assembly, and a grinding assembly positioned above the transmission assembly, wherein: The transmission assembly includes parallel guardrails and multiple parallel roller tracks rotatably installed between the two guardrails. One roller track is connected to the drive unit via a chain, and adjacent roller tracks are connected to each other via chains. The grinding assembly includes a mesh frame mounted above the rod-shaped workpiece and multiple grinding heads mounted on the mesh frame. The multiple grinding heads are evenly distributed horizontally on the mesh frame. Both support frames have multiple height adjustment slots on the same side in the vertical direction. The end of the mesh frame is engaged between two height adjustment slots.

2. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The rod-shaped workpiece is made of industrial pure iron.

3. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The outer diameter of the roller conveyor is 68-72mm, the axial distance between two adjacent roller conveyors is 95-105mm, the length of a single roller conveyor is 0.7-1m, the number of roller conveyors is 10-15, and the surface roughness Ra of the outer wall of the roller conveyor is 200-400μm.

4. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The guardrail is 0.2-0.3m high and 20-30mm thick.

5. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The grinding head uses bundled steel wire, with a rectangular cross-section for each wire. The thickness of the rectangular cross-section is 0.5-1mm, and the width is 3-5mm. The Brinell hardness of the steel wire is 160-200HB, and the bulk density of the bundled steel wire is 3-5g / cm³. 3 The volume is 20-40cm 3 The number of grinding heads is 100-300.

6. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The mesh fixing frame is constructed by welding longitudinal and transverse steel bars perpendicularly to each other. The longitudinal steel bars are arranged in parallel along the direction perpendicular to the axis of the roller conveyor, with a total of 30-40 bars. The length of a single longitudinal steel bar is 140-160cm, and the spacing between adjacent longitudinal steel bars is 20-30mm. The transverse steel bars are arranged in parallel along the direction parallel to the axis of the roller conveyor, with a total of 10-20 bars. The spacing between adjacent transverse steel bars is equal to the axial spacing of the roller conveyor, and the length of a single transverse steel bar is 140-200cm. The grinding head is fixed to the intersection of the longitudinal and transverse steel bars by iron wire with a diameter of 2-3mm.

7. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The support frame consists of four vertically arranged steel bars with a diameter of 20-30mm and a length of 80-120cm. The four vertical steel bars are arranged on both sides of the transmission component, with two bars on each side. On each side of the support frame, four to six inclined steel bars are welded in the vertical direction. The diameter of the inclined steel bars is 6-10mm and the length is 100-150mm. The gap between two adjacent inclined steel bars forms the height adjustment groove. The width of a single height adjustment groove is 6-8mm.

8. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, Suitable for rod-shaped workpieces with a diameter of 48-52mm and a length of 0.5-0.6m.

9. The grinding and rust removal device for rod-shaped workpieces according to claim 1, characterized in that, The drive unit uses a motor.

10. A method for grinding and removing rust from rod-shaped workpieces, the method being carried out using the grinding and rust removal apparatus as described in any one of claims 1 to 9, comprising: Step 1: Place the rod-shaped workpiece to be derusted in the gap between two adjacent rollers, so that the rod-shaped workpiece is directly below the grinding head of the grinding assembly. Step 2: Adjust the position of the mesh fixing frame in the height adjustment groove of the support frame along the vertical direction, and adjust the contact pressure between the grinding head and the surface of the rod-shaped workpiece; Step 3: Turn on the drive unit. The drive unit drives the end rollers to rotate through the chain. Adjacent rollers are synchronously driven by the chain, so that all rollers rotate in the same direction. Step 4: The rotating roller conveyor drives the rod-shaped workpiece to rotate around its own axis through the friction between itself and the workpiece. The outer surface of the workpiece continuously rubs against multiple grinding heads fixed on the mesh frame, thus completing the surface rust removal operation of the workpiece.

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