Columnar steel grinding device for metal product machining

Abstract

The invention relates to the technical field of steel polishing devices, in particular to a columnar steel polishing device for metal product machining, which comprises a protective shell, partition surface shells are detachably mounted at the left end and the right end of the protective shell, and a plurality of conveying tables for conveying steel columns are fixedly mounted at the inner bottom ends of the two partition surface shells and the protective shell. A lifting plate is fixedly installed at the upper end of the interior of the protective shell, a driven support is arranged below the lifting plate, a grinding device used for machining the outer surface of the steel column is arranged between the driven support and the lifting plate, and when the steel column is conveyed into the driven support through the conveying wheels, the grinding device conducts grinding treatment on the surface of the steel column immediately. Through cooperation of the conveying table, the driven support and the pneumatic switching mechanism, full-automatic control of placing, lifting and rotary grinding of the steel column is achieved, an operator only needs to place the steel column on the conveying table, grinding operation can be completed under the condition that the steel column is not clamped and positioned through a lathe, the manual clamping step is greatly reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of steel grinding devices, specifically a cylindrical steel grinding device for metal product processing. Background Technology

[0002] In order to improve the surface finish and dimensional accuracy of metal products during the production and processing, the outer surface usually needs to be polished. In particular, for columnar steel, the surface often needs to be finely polished before subsequent welding, coating or plating processes to remove oxide scale, welding residue and surface micro-defects, thereby improving the bonding performance and appearance quality of the product.

[0003] Existing cylindrical steel grinding devices are mostly fixed or semi-automatic structures. They typically require operators to clamp the steel column onto a worktable or chuck, and then grind it unidirectionally through a grinding mechanism. When dealing with long or large-diameter steel columns, these structures suffer from problems such as complex positioning and adjustment, long clamping time, and limited grinding range, making it difficult to meet the needs of continuous production and processing of steel columns of various specifications. In addition, some devices lack a synchronous control structure during the rotation or displacement of the steel column, which can easily lead to uneven grinding or workpiece slippage, affecting the final surface quality. Therefore, this application proposes a cylindrical steel grinding device for metal product processing. Summary of the Invention

[0004] The purpose of this invention is to provide a grinding device for cylindrical steel materials used in metal product processing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for columnar steel in metal product processing, comprising a protective shell, wherein partition shells are detachably installed at both ends of the protective shell to prevent metal dust from being stirred up during the grinding process; multiple transport platforms for transporting the steel column are fixedly installed at the bottom of both partition shells and the protective shell, and multiple transport wheels are rotatably installed at the top of each transport platform; a lifting plate is fixedly installed at the upper inside of the protective shell, and a passive support is provided below the lifting plate; a grinding mechanism for processing the outer surface of the steel column is provided between the passive support and the lifting plate; when the steel column is transported by the transport wheels to the inside of the passive support, the grinding mechanism immediately grinds the surface of the steel column; a triangular slide is slidably installed at the inner end of each partition shell, and a transmission device for driving the steel column to rotate is installed at the upper end of the triangular slide.

[0006] As a further embodiment of the present invention, the transmission device includes a passive cylinder, which is slidably mounted on the inclined surface of a triangular slide table. The passive cylinder can slide along the inclined direction of the triangular slide table to adapt to steel columns of different diameters, thereby achieving reliable contact and positioning of the steel columns. A passive suction block is inserted inside the passive cylinder. By sliding the passive cylinder on the inclined surface of the triangular slide table, the transmission device can adapt to steel columns of different diameters, achieving reliable contact and positioning, and effectively improving the adaptability and stability of the operation.

[0007] As a further embodiment of the present invention, a transmission disk is rotatably mounted on the end of the passive suction block away from the passive cylinder, a transmission motor is fixedly mounted on the inner end of the passive suction block, and the output shaft of the transmission motor is fixedly connected to the transmission disk. The surface of the transmission disk contacts the apex of the steel column. After the passive suction block moves away from the passive cylinder, the transmission disk will contact the end face of the steel column. Subsequently, when the transmission disk rotates, it drives the steel column to rotate.

[0008] As a further embodiment of the present invention, multiple arc-shaped rods are rotatably installed on the inner side of the passive support, and support wheels are rotatably installed on the free ends of the arc-shaped rods. The multiple support wheels are interconnected by synchronous connecting rods. Multiple electric actuators are rotatably installed on the inner end of the protective shell. The telescopic end of each electric actuator is connected to the corresponding synchronous connecting rod. When the telescopic end of the electric actuator extends outward, it drives the synchronous connecting rod to rotate, thereby realizing the synchronous rotation of the arc-shaped rods.

[0009] As a further embodiment of the present invention, the grinding mechanism includes two opposing support frames, with an annular grinding belt tensioned between the two support frames. The grinding belt is wound around multiple support shafts to form a closed grinding belt ring, and at least one support shaft is connected to the output shaft of a drive motor to drive the grinding belt to continuously circulate, so that the outer surface of the columnar steel material comes into contact with the grinding belt, thereby achieving continuous grinding of its outer surface. This grinding device directly drives the support shafts through the drive motor, driving the tensioned grinding belt to operate stably. It has a compact structure, high transmission efficiency, and can achieve uniform and effective grinding treatment of the workpiece.

[0010] As a further embodiment of the present invention, a connecting plate is fixedly installed at the upper end of the passive support, and two balancing cylinders are fixedly installed at the bottom end of the lifting plate. The two balancing cylinders are located above the connecting plate, and the telescopic ends of the balancing cylinders are fixedly connected to the connecting plate. A driving shell is fixedly installed on the surface of the passive support, and an abutment block is slidably installed at the bottom end of the driving shell. A transmission cylinder is fixedly installed on the surface of the driving shell. A passive rod and a transmission rod are respectively inserted inside the transmission cylinder, and a passive plug is fixedly installed at the end of the passive rod and the transmission rod that are close to each other. A gap is formed between the two passive plugs to serve as a buffer space.

[0011] As a further embodiment of the present invention, the passive rod is fixedly connected to the abutment block, and the passive rod is connected to the transmission cylinder by a return spring, which is used to reset the passive rod after the external force disappears. A guide rod is rotatably installed at the bottom end of the drive housing, and the bottom end of the guide rod is movably connected to the end of the transmission rod, so as to guide the movement direction of the transmission rod during the transmission process and prevent deflection or jamming.

[0012] As a further embodiment of the present invention, a switch cylinder is fixedly installed at the inner end of the drive housing, an air guide column is provided through the inner end of the switch cylinder, an annular air guide groove is provided on the outer surface of the air guide column, a partition plate is fixedly installed at the inner end of the switch cylinder, the partition plate divides the internal space of the switch cylinder into two independent chambers, and the air guide column passes through the partition plate and can slide therein.

[0013] As a further embodiment of the present invention, a protrusion is fixedly installed on the side of the guide rod near the switching cylinder. The surface of the protrusion abuts against the end of the air guide column. When the guide rod rotates, the protrusion on its surface drives the air guide column to move axially away from the guide rod, so that the air guide groove on the surface of the air guide column forms a communication channel with the chambers on both sides of the partition plate, thereby realizing rapid airflow switching. This mechanism drives the protrusion by rotating the guide rod, and the protrusion pushes the air guide column to move axially, so that the air guide groove quickly connects the chambers on both sides, realizing reliable airflow switching and switching control.

[0014] As a further embodiment of the present invention, a multi-port pipe is fixedly connected to one end of the on / off cylinder away from the air guide column. A movable pipe is inserted inside the multi-port pipe, and an axially movable switching plug is installed inside the multi-port pipe. The switching plug is fixedly connected to the end of the movable pipe. A synchronization pipe is fixedly connected to one output end of the multi-port pipe, and a drive pipe is fixedly connected to the other output end of the multi-port pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When using this invention, the steel column is fully automated from placement and lifting to rotation and grinding through the cooperation of the transport table, passive support and pneumatic switching mechanism. The operator only needs to place the steel column on the transport table to complete the grinding operation without the need for lathe clamping and positioning, which greatly reduces the manual clamping steps and improves the work efficiency.

[0017] 2. When using this invention, the passive cylinder can be slidably arranged along the inclined surface of the triangular slide, so that it can automatically adjust the contact position with the end face of the steel column according to the change of the diameter of the steel column, thereby ensuring that steel columns of different specifications can be reliably clamped and rotated, improving the versatility and adaptability of the device. Furthermore, through the airflow switching design between the switch cylinder, the multi-way pipe and the balance cylinder, the air pressure on both sides of the passive cylinder can be alternately changed, thereby driving the steel column to move back and forth between the two sides, so that the surface of the steel column can be fully polished, effectively improving the uniformity of polishing and the surface smoothness.

[0018] 3. When using this invention, the electric actuator, synchronous connecting rod and arc rod together constitute the lifting mechanism, which can smoothly lift the steel column after it is moved into place, avoiding interference between the transport wheel and the grinding belt. The pneumatic drive and the lifting action are automatically coordinated through mechanical and pneumatic logic to ensure that the steel column maintains stable rotation and balanced force during the grinding process. Attached Figure Description

[0019] Figure 1 A schematic diagram of a steel grinding device;

[0020] Figure 2 A schematic diagram of the internal structure of a steel grinding device;

[0021] Figure 3 This is a schematic diagram of the structure at the triangular sliding table;

[0022] Figure 4 This is a schematic diagram of the internal structure of the passive cylinder;

[0023] Figure 5 This is a schematic diagram of the internal structure of the protective shell;

[0024] Figure 6 This is a schematic diagram of the structure when the lifting plate and the passive support are separated;

[0025] Figure 7 This is a disassembled diagram of the grinding device;

[0026] Figure 8 This is a schematic diagram of the structure at the passive support and the drive housing.

[0027] Figure 9 This is a schematic diagram of the structure between the contact block and the inside of the transmission cylinder;

[0028] Figure 10 This is a schematic diagram of the internal structure of the drive shell;

[0029] Figure 11 This is a cross-sectional view of the through-and-shut cylinder and the multi-way pipe.

[0030] In the diagram: 1. Partition shell; 2. Protective shell;

[0031] 41. Grinding belt; 42. Support frame; 43. Drive motor; 44. Support shaft;

[0032] 101. Transport platform; 102. Triangular slide table; 103. Guide motor; 104. Conveyor belt; 105. Transport wheel; 106. Electric actuator; 107. Buffer cylinder; 108. Stroke stop block;

[0033] 201. Passive cylinder; 202. Transmission disc; 203. Synchronizing tube; 204. Passive suction block; 205. Transmission motor;

[0034] 301. Passive support; 302. Connecting plate; 303. Balance cylinder; 304. Arc rod; 305. Support wheel; 306. Synchronous connecting rod;

[0035] 401. Lifting plate; 402. Drive housing; 403. Transmission tube; 404. Input tube; 405. Abutment block; 406. Transmission cylinder; 407. Passive rod; 408. Return spring; 409. Passive plug; 410. Transmission rod; 411. Guide rod; 412. Drive tube;

[0036] 501. Switch tube; 502. Multi-port pipe; 503. Switch plug; 504. Movable pipe; 505. Air guide column. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1-3 A grinding device for columnar steel in metal product processing includes a protective shell 2. Both ends of the protective shell 2 are detachably installed with partition shells 1 by bolts. The partition shells 1 prevent metal dust from being stirred up during the grinding process. Multiple transport platforms 101 for transporting steel columns are fixedly installed on the bottom of the two partition shells 1 and the protective shell 2 by bolts. Multiple transport wheels 105 are rotatably installed on the upper end of each transport platform 101. The surface of the transport wheels 105 is covered with a wear-resistant rubber coating to prevent scratches on the surface of the steel column during transport.

[0039] Each transport platform 101 is equipped with a transport motor (not shown in the figure). The output end of the transport motor is fixedly connected to one of the transport wheels 105 through a coupling. When the transport motor starts, it can drive the transport wheel 105 to rotate synchronously, thereby driving the steel column placed on it to be transported smoothly along the length of the protective shell 2.

[0040] A support plate 401 is fixedly installed at the upper end of the inner side of the protective shell 2. A passive support 301 is provided below the support plate 401. A grinding mechanism for processing the outer surface of the steel column is provided between the passive support 301 and the support plate 401. When the steel column is transported to the inside of the passive support 301 by the transport wheel 105, the grinding mechanism immediately grinds the surface of the steel column. In order to improve the grinding quality and stability, a triangular slide table 102 is slidably installed at the inner end of the partition shell 1. A transmission device for driving the steel column to rotate is installed at the upper end of the triangular slide table 102.

[0041] In addition, the protective shell 2 is equipped with a dust collection pipe and a cooling air duct, which are used to simultaneously remove dust and reduce the temperature rise of the grinding wheel during the grinding process, thereby preventing the spread of metal dust and extending the service life of the grinding device.

[0042] like Figures 2-4 As shown, the transmission device includes a passive cylinder 201, which is slidably mounted on the inclined surface of the triangular slide table 102. The passive cylinder 201 can slide along the inclined direction of the triangular slide table 102 to adapt to steel columns of different diameters, thereby achieving reliable contact and limiting of the steel columns. A passive suction block 204 is inserted inside the passive cylinder 201. A protrusion is fixedly installed on the surface of the passive suction block 204. A rectangular groove that mates with the protrusion is opened at the inner end of the passive cylinder 201. Through the guiding cooperation between the protrusion and the rectangular groove, the passive suction block 204 maintains a stable posture when sliding inside the passive cylinder 201, preventing it from rotating during axial sliding.

[0043] A transmission disk 202 is rotatably mounted on the end of the passive suction block 204 away from the passive cylinder 201. A transmission motor 205 is fixedly mounted on the inner end of the passive suction block 204, and the output shaft of the transmission motor 205 is fixedly connected to the transmission disk 202. The surface of the transmission disk 202 contacts the apex of the steel column. After the passive suction block 204 moves away from the passive cylinder 201, the transmission disk 202 will contact the end face of the steel column. Then, when the transmission disk 202 rotates, it drives the steel column to rotate.

[0044] Specifically, the contact surface of the transmission disc 202 is evenly distributed with anti-slip sharp teeth to enhance the friction with the end face of the steel column and prevent slippage during transmission. The two ends of the steel column contact the corresponding transmission disc 202 to form a clamping fit, thereby achieving stable driving of steel columns of different lengths and weights. The passive cylinder 201 slides upward along the inclined surface of the triangular slide table 102 to make way for the steel column to enter the channel until the steel column is completely inside the passive support 301, after which the passive cylinder 201 moves downward.

[0045] Tensioning wheels are rotatably mounted on the three ends of the triangular slide table 102. The three tensioning wheels are tensioned together by a conveyor belt 104, which is fixedly connected to the passive cylinder 201. A guide motor 103 is fixedly mounted on the inner end of the triangular slide table 102 by bolts. The output end of the guide motor 103 is fixedly connected to any one of the tensioning wheels.

[0046] Example 2: Please refer to Figure 2 , Figure 5 , Figure 6 A grinding device for columnar steel for metal product processing, based on Embodiment 1, wherein multiple arc-shaped rods 304 are rotatably installed on the inner side of the passive support 301, and support wheels 305 are rotatably installed on the free ends of the arc-shaped rods 304. The multiple support wheels 305 are interconnected by synchronous connecting rods 306. Specifically, the arc-shaped rods 304 are symmetrically arranged on both sides of the passive support 301 for lifting and limiting the steel column.

[0047] When the steel column is transported into the passive support 301 by the transport wheel 105, the support wheels 305 are located on both sides below the steel column. Then, under the action of the driving force, the arc rod 304 rotates around its axis, so that the support wheel 305 contacts the outer wall of the steel column and forms support. As the arc rod 304 continues to rotate, the steel column is gradually lifted to the grinding station to achieve alignment and cooperation with the grinding device above.

[0048] Multiple electric actuators 106 (not shown in the figure) are rotatably installed on the inner end of the protective shell 2. The telescopic end of each electric actuator 106 is connected to the corresponding synchronous connecting rod 306 through a rotating shaft. When the telescopic end of the electric actuator 106 extends outward, it drives the synchronous connecting rod 306 to rotate, thereby realizing the synchronous rotation of the arc rod 304. In order to avoid interference between the thrust direction and the rotation direction, the electric actuators 106 are arranged at an angle inside the protective shell 2 to ensure the driving stability of the arc rod 304.

[0049] Two buffer cylinders 107 are fixedly installed on the inner side of the transport platform 101. The buffer cylinders 107 are symmetrically distributed below both ends of the passive support 301. Each buffer cylinder 107 has a travel obstruction block 108 passing through its upper end. The travel obstruction block 108 is connected to the buffer cylinder 107 through an elastic sheet. The travel obstruction block 108 has a triangular structure, and its upper end is higher than the outer circle surface of the transport wheel 105. When the steel column moves along the transport platform 101 to the position of the travel obstruction block 108, the edge of the steel column contacts the inclined surface of the travel obstruction block 108, causing the travel obstruction block 108 to move downward under force. An infrared sensor (not shown in the figure) is installed inside the travel obstruction block 108 to detect the current position of the steel column and whether it has reached the grinding area of ​​the passive support 301. The sensor adopts existing mature technology and can output position signals in real time, providing control basis for the start and stop of the electric push rod 106, thereby realizing the coordinated control of automated alignment and lifting action.

[0050] like Figure 6 , Figure 7 As shown, the grinding mechanism includes two opposing support frames 42, which are fixedly installed at the bottom of the lifting plate 401. An annular grinding belt 41 is tensioned between the two support frames 42. The grinding belt 41 is wound around multiple support shafts 44 to form a closed grinding belt ring. At least one support shaft 44 is connected to the output shaft of the drive motor 43 to drive the grinding belt 41 to continuously circulate, so that the outer surface of the columnar steel material is in close contact with the grinding belt 41 to achieve continuous grinding of its outer surface. The inner end of the support frame 42 is provided with a tensioning wheel, and the surface of the tensioning wheel is in contact with the inside of the grinding belt 41.

[0051] Example 3: Please refer to Figures 8-10 A grinding device for columnar steel for metal product processing, based on embodiments 1 and 2, wherein a connecting plate 302 is fixedly installed at the upper end of a passive support 301, and two balance cylinders 303 are fixedly installed at the bottom end of a lifting plate 401. The two balance cylinders 303 are located above the connecting plate 302, and the telescopic ends of the balance cylinders 303 are fixedly connected to the connecting plate 302. The balance cylinders 303 are provided with balance springs inside, which are used to provide rebound force when the lifting plate 401 is deformed by force or the steel column is eccentrically loaded, so that the connecting plate 302 can return to its initial position under the action of the balance spring after the force is exhausted, thereby maintaining the vertical stability of the grinding device;

[0052] A drive housing 402 is bolted to the surface of the passive support 301. An abutment block 405 is slidably mounted on the bottom end of the drive housing 402. A transmission cylinder 406 is fixedly mounted on the surface of the drive housing 402. A passive rod 407 and a transmission rod 410 are respectively inserted inside the transmission cylinder 406. A passive plug 409 is fixedly mounted on the end of the passive rod 407 and the transmission rod 410 that are close to each other. A gap is formed between the two passive plugs 409, which serves as a buffer space. When the passive rod 407 is subjected to an instantaneous external force and moves along the transmission direction, this space is compressed, which can effectively absorb the impact energy and avoid direct force transmission that could cause structural damage.

[0053] The passive rod 407 is fixedly connected to the abutment block 405. The passive rod 407 is connected to the transmission cylinder 406 through a return spring 408, which is used to reset the passive rod 407 after the external force disappears. The bottom end of the drive housing 402 is rotatably mounted with a guide rod 411, and the bottom end of the guide rod 411 is movably connected to the end of the transmission rod 410 through an auxiliary rod, which is used to guide the movement direction of the transmission rod 410 during the transmission process and prevent deflection or jamming.

[0054] In addition, abutment block 405 is also slidably installed on the side of passive support 301 away from drive housing 402, and is connected to passive support 301 through spring piece. Abutment block 405 has a triangular structure, and its inclined surface faces the direction of movement of steel column. When steel column moves upward along the lifting path, its edge contacts the inclined surface of abutment block 405, causing abutment block 405 to slide outward under the action of force.

[0055] like Figure 10 , Figure 11 As shown, a switch cylinder 501 is fixedly installed at the inner end of the drive housing 402. An air guide column 505 passes through the inner end of the switch cylinder 501. The air guide column 505 and the switch cylinder 501 are connected by a reset spring to ensure that the air guide column 505 can automatically return to its position after the force is released. An annular air guide groove is opened on the outer surface of the air guide column 505. A partition plate is fixedly installed at the inner end of the switch cylinder 501. The partition plate divides the internal space of the switch cylinder 501 into two independent front and rear chambers. The air guide column 505 passes through the partition plate and can slide in it.

[0056] A protrusion is fixedly installed on the side of the guide rod 411 near the switch cylinder 501. The surface of the protrusion abuts against the end of the air guide column 505. When the guide rod 411 rotates, the protrusion on its surface drives the air guide column 505 to move axially in a direction away from the guide rod 411, so that the air guide groove on the surface of the air guide column 505 forms a communication channel with the chambers on both sides of the partition plate, thereby realizing the rapid switching of airflow. When the guide rod 411 is reset, under the elastic force of the reset spring, the air guide column 505 automatically returns to the original position, and the chambers on both sides of the partition plate are re-isolated.

[0057] An input pipe 404 is fixedly connected to the surface of the on / off cylinder 501. The input pipe 404 communicates with a chamber near the guide rod 411, and the other end of the input pipe 404 is connected to a compressor that provides high-pressure gas.

[0058] like Figure 8 , Figure 10 , Figure 11 As shown, a multi-port pipe 502 is fixedly connected to one end of the on / off cylinder 501 away from the air guide column 505. A movable pipe 504 is installed inside the multi-port pipe 502. An axially movable switching plug 503 is installed inside the multi-port pipe 502. The switching plug 503 is fixedly connected to the end of the movable pipe 504. By the reciprocating movement of the movable pipe 504, the switching plug 503 can be driven to switch different airflow channels inside the multi-port pipe 502.

[0059] One of the output terminals of the multi-channel tube 502 is fixedly connected to a synchronizing tube 203, and the output terminal of the synchronizing tube 203 is connected to the input terminal of the passive cylinder 201. The other output terminal of the multi-channel tube 502 is fixedly connected to a driving tube 412, and the output terminal of the driving tube 412 is connected to the input terminal of the other passive cylinder 201.

[0060] The output end of the balance cylinder 303 near the drive housing 402 is fixedly connected to the transmission pipe 403. The output end of the transmission pipe 403 is installed inside the movable pipe 504 to provide pneumatic driving force for the movement of the movable pipe 504. After the switching plug 503 moves towards the drive pipe 412 and passes the connection with the switch cylinder 501, the drive pipe 412 cannot be vented. The gas inside the switch cylinder 501 will flow into the synchronization pipe 203. It is worth noting that the passive cylinder 201 is equipped with a solenoid valve to control the opening and closing of the gas inside it.

[0061] The working principle of this invention is:

[0062] In use, the steel column to be polished is placed on the transport platform 101 inside the partition shell 1. At this time, the transport wheel 105 on the transport platform 101 rotates and drives the steel column to move until the steel column moves into the passive support 301. Then, the telescopic end of the electric push rod 106 pushes the synchronous connecting rod 306, causing the arc rod 304 to rotate. During the rotation of the arc rod 304, the steel column is lifted and separated from the contact between it and the transport wheel 105. At this time, the surface of the steel column contacts the surface of the polishing belt 41. At the same time, when the steel column moves upward along the lifting path, its edge contacts the inclined surface of the abutment block 405, causing the abutment block 405 to slide outward under the force and push the transmission rod 410 to move through the passive rod 407. When the guide rod 411 rotates, the protrusion on its surface drives the air guide column 505 to move axially in a direction away from the guide rod 411, so that the air guide groove on the surface of the air guide column 505 forms a communication channel with the chambers on both sides of the partition plate.

[0063] When the conveyor belt 104 rotates, it drives the passive cylinder 201 to move, so that the transmission disc 202 contacts the end face of the steel column. Then the transmission motor 205 drives the transmission disc 202 to rotate, and the steel column starts to rotate under this action. The grinding belt 41 rotates accordingly and performs grinding operations on the surface of the steel column. At this time, high-pressure gas enters the inside of the switching cylinder 501 along the input pipe 404, and then enters the inside of the passive cylinder 201 on the left side of the protective shell 2 along the drive pipe 412. As the gas inside the passive cylinder 201 on the left side of the protective shell 2 increases, it pushes the steel column to move to the right side of the protective shell 2 through the passive suction block 204. At this time, the passive support 301 moves along with the steel column.

[0064] As the passive support 301 moves, the connecting plate 302 compresses the air in the balance cylinder 303 on the side of the drive housing 402. The compressed air then enters the interior of the moving pipe 504 along the transmission pipe 403. The switching plug 503 moves toward the drive pipe 412 and passes the connection with the switch cylinder 501. At this time, the drive pipe 412 cannot be vented, and the gas inside the switch cylinder 501 flows into the synchronization pipe 203. The air inside the passive cylinder 201 on the right side of the protective housing 2 increases (the solenoid valve of the passive cylinder 201 on the left side of the protective housing 2 opens). At this time, the steel column moves toward the left side of the protective housing 2, thus achieving a full grinding operation on the steel column.

[0065] After the grinding operation is completed, the electric actuator 106 drives the arc rod 304 to return to its initial state. At this time, the steel column moves downward and re-contacts the surface of the transport wheel 105. Subsequently, the steel column flows out from the partition shell 1 on the left side of the protective shell 2.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A grinding device for cylindrical steel materials used in metal product processing, comprising a protective shell (2), characterized in that: Both ends of the protective shell (2) are detachably fitted with partition shells (1). Multiple transport platforms (101) for transporting steel columns are fixedly installed at the bottom of both partition shells (1) and the inner interior of the protective shell (2). The transport platforms (101) prevent metal dust from being stirred up during the grinding process. Multiple transport wheels (105) are rotatably mounted on the upper end of each transport platform (101). A lifting plate (401) is fixedly installed at the upper interior of the protective shell (2). A passive support (301) is provided below (401), and a grinding mechanism for processing the outer surface of the steel column is provided between the passive support (301) and the support plate (401). When the steel column is transported to the inside of the passive support (301) by the transport wheel (105), the grinding mechanism grinds the surface of the steel column. A triangular slide (102) is slidably installed on the inner end of the partition shell (1), and a transmission device for driving the steel column to rotate is installed on the upper end of the triangular slide (102). The grinding mechanism includes two opposing support frames (42), which are fixedly installed at the bottom end of the lifting plate (401). An annular grinding belt (41) is tensioned between the two support frames (42). The grinding belt (41) is wound around multiple support shafts (44) to form a closed grinding belt ring. At least one support shaft (44) is connected to the output shaft of the drive motor (43) to drive the grinding belt (41) to continuously circulate, so that the outer surface of the columnar steel material is in close contact with the grinding belt (41) to achieve continuous grinding of its outer surface.

2. The grinding device for cylindrical steel materials used in metal product processing according to claim 1, characterized in that: The transmission device includes a passive cylinder (201), which is slidably mounted on the inclined surface of the triangular slide (102). The passive cylinder (201) can slide along the inclined direction of the triangular slide (102) to adapt to steel columns of different diameters and achieve reliable fitting and limiting of the steel column. A passive suction block (204) is inserted inside the passive cylinder (201).

3. The grinding device for cylindrical steel materials used in metal product processing according to claim 2, characterized in that: A transmission disk (202) is rotatably mounted on the end of the passive suction block (204) away from the passive cylinder (201). A transmission motor (205) is fixedly mounted on the inner end of the passive suction block (204), and the output shaft of the transmission motor (205) is fixedly connected to the transmission disk (202). The surface of the transmission disk (202) is in contact with the apex of the steel column. After the passive suction block (204) moves away from the passive cylinder (201), the transmission disk (202) will contact the end face of the steel column. Then, when the transmission disk (202) rotates, it drives the steel column to rotate.

4. The grinding device for cylindrical steel materials used in metal product processing according to claim 1, characterized in that: The passive support (301) has multiple arc-shaped rods (304) rotatably mounted on its inner side. Each arc-shaped rod (304) has a support wheel (305) rotatably mounted on its free end. The multiple support wheels (305) are interconnected by a synchronous connecting rod (306). The protective shell (2) has multiple electric actuators (106) rotatably mounted on its inner end. The telescopic end of each electric actuator (106) is connected to the corresponding synchronous connecting rod (306). When the telescopic end of the electric actuator (106) extends outward, it drives the synchronous connecting rod (306) to rotate, thereby realizing the synchronous rotation of the arc-shaped rod (304).

5. The grinding device for cylindrical steel materials used in metal product processing according to claim 1, characterized in that: A connecting plate (302) is fixedly installed at the upper end of the passive support (301), and two balance cylinders (303) are fixedly installed at the bottom end of the lifting plate (401). The two balance cylinders (303) are located above the connecting plate (302), and the telescopic ends of the balance cylinders (303) are fixedly connected to the connecting plate (302). A driving shell (402) is fixedly installed on the surface of the passive support (301).

6. The grinding device for cylindrical steel materials used in metal product processing according to claim 5, characterized in that: A contact block (405) is slidably installed at the bottom end of the drive housing (402). A transmission cylinder (406) is fixedly installed on the surface of the drive housing (402). A passive rod (407) and a transmission rod (410) are respectively inserted inside the transmission cylinder (406). A passive plug (409) is fixedly installed at the end of the passive rod (407) and the transmission rod (410) that are close to each other. A gap is formed between the two passive plugs (409) to serve as a buffer space.

7. The grinding device for cylindrical steel materials used in metal product processing according to claim 6, characterized in that: The passive rod (407) is fixedly connected to the abutment block (405), and the passive rod (407) is connected to the transmission cylinder (406) by a return spring (408) to reset the passive rod (407) after the external force disappears. The bottom end of the drive housing (402) is rotatably mounted with a guide rod (411), and the bottom end of the guide rod (411) is movably connected to the end of the transmission rod (410) to guide the movement direction of the transmission rod (410) during transmission and prevent deflection or jamming.

8. The grinding device for cylindrical steel materials used in metal product processing according to claim 7, characterized in that: A switch cylinder (501) is fixedly installed at the inner end of the drive housing (402). An air guide column (505) is provided through the inner end of the switch cylinder (501). An annular air guide groove is provided on the outer surface of the air guide column (505). A partition plate is fixedly installed at the inner end of the switch cylinder (501). The partition plate divides the internal space of the switch cylinder (501) into two independent chambers, and the air guide column (505) passes through the partition plate and can slide within it.

9. A grinding device for cylindrical steel materials used in metal product processing according to claim 8, characterized in that: A protrusion is fixedly installed on the side of the guide rod (411) near the switch cylinder (501). The surface of the protrusion abuts against the end of the air guide column (505). When the guide rod (411) rotates, the protrusion on its surface drives the air guide column (505) to move axially away from the guide rod (411), so that the air guide groove on the surface of the air guide column (505) forms a communication channel with the chambers on both sides of the partition plate, thereby realizing the rapid switching of airflow.

10. A grinding device for cylindrical steel materials used in metal product processing according to claim 9, characterized in that: The end of the switch cylinder (501) away from the air guide column (505) is fixedly connected to a multi-port pipe (502). A movable pipe (504) is installed inside the multi-port pipe (502). An axially movable switching plug (503) is installed inside the multi-port pipe (502). The switching plug (503) is fixedly connected to the end of the movable pipe (504). A synchronization pipe (203) is fixedly connected to one of the output ends of the multi-port pipe (502), while a drive pipe (412) is fixedly connected to the other output end of the multi-port pipe (502).

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