A structure for a mill rod feeding machine to prevent rod dropping and jamming.

Abstract

This utility model discloses a mill bar feeder structure to prevent bar dropping and jamming. It includes a transmission unit, a frame unit, a first idler roller unit, a roller chain, a tail groove, a levering unit, and multiple second idler roller units. The transmission unit is located at the lower part of the frame unit, the first idler roller unit is located on the frame unit above the transmission unit, and the multiple second idler roller units are evenly distributed on the frame unit. Three of the second idler roller units, comprising roller number one, roller number two, and roller number three, are arranged in a symmetrical equilateral triangle at the end of the frame unit. The transmission unit is connected to the first idler roller unit via a belt and transmits power, while the first idler roller unit is connected to the second idler roller units via a roller chain and transmits power. The first idler roller unit drives the multiple second idler roller units to rotate synchronously via the roller chain. The levering unit is connected to the tail groove via a bolt assembly. This utility model effectively suppresses bar deviation, jamming, and dropping, improving the conveying performance of the bar feeder; it also increases the overall height of the mounting base, facilitating equipment maintenance.

Description

Technical Field

[0001] This utility model relates to a structure for a mill rod feeder that prevents rods from falling off or getting stuck, and belongs to the technical field of mill rod feeders. Background Technology

[0002] In industries such as mining, building materials, and metallurgy, rod mills are key equipment for material crushing, and the performance of their accompanying rod feeders directly affects production efficiency and stability. Conventional rod feeders often experience problems such as uneven rod feeding, rod dropping, and rod jamming during operation, requiring frequent shutdowns for intervention. This severely impacts production efficiency and increases equipment wear, and the motor mounting base is complex to manufacture (e.g., Figure 5 As shown), the installation and disassembly of the electric motor are difficult, resulting in high manufacturing costs and inefficient maintenance. In existing technologies, bar feeders typically attempt to optimize performance by improving single components (such as changing the roller material or adding a lubrication device). Figure 3 (As shown), but lacking systematic innovation in the layout of the roller assembly and the mounting base, it failed to fundamentally solve the core contradictions of rod drop, rod jamming, and cost control. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an optimized structure for a mill bar feeder that prevents bar dropping and jamming, taking into account the defects of the existing technology, so as to achieve stable steel bar feeding, reduce manufacturing costs and improve maintenance efficiency.

[0004] To solve this technical problem, this utility model provides a mill bar adding machine structure to prevent bar dropping and jamming, including a transmission unit, a frame unit, a first idler roller unit, a roller chain, a tail groove, a bar shifting unit, and multiple second idler roller units. The transmission unit is located at the lower part of the frame unit, the first idler roller unit is located on the frame unit and above the transmission unit, and the multiple second idler roller units are evenly distributed on the frame unit. Three of the second idler roller units, including roller number one, roller number two, and roller number three, are arranged in a symmetrical equilateral triangle at the end of the frame unit. The first idler section is connected to the second idler section via pulleys and belts to transmit power. The first idler section is connected to the second idler section via sprockets and roller chains to transmit power. The first idler section drives multiple second idler sections to rotate synchronously via sprockets and roller chains. The pusher bar section is connected to the tail groove via bolt assemblies. The steel bars enter the idler section in an orderly manner under the action of the pusher bar section. The idler section conveys the steel bars under the action of power. When the steel bars are conveyed to the end of the bar adding machine, they are smoothly conveyed into the mill cylinder by the constraint of the triangular roller group, thus completing the bar adding operation.

[0005] The transmission unit includes a motor base, a motor, a V-belt, and a pulley. The height of the motor base is 1 / 3 of the height of the frame. The motor is mounted on the motor base. The output shaft of the motor is connected to a pulley via a key, and the pulley transmits power through the V-belt.

[0006] The motor base is made of steel plate and channel steel. The bottom is a support frame formed by three intersecting channel steels of different lengths. Between two longitudinal channel steels, stiffening plates are welded every 250mm along the length to form a "support wall". The top steel plate is fixed to the channel steel by welding. Holes are precisely drilled on the steel plate according to the size of the motor mounting holes, and the motor is rigidly connected to the steel plate by bolts.

[0007] The frame is provided with a base plate and a support rod frame. The transmission part is set on the lower base plate of the frame. The first support roller part and multiple second support roller parts are set on the support rod frame of the frame. The support rod frame is made of two parallel channel steel welded together.

[0008] The idler roller section includes an idler roller shaft, an idler roller, and a sprocket. The idler roller shaft is supported by a bearing mounted on a channel steel. The idler roller is located at one end of the idler roller shaft and fixed by a key. The sprockets are located on both sides of the idler roller. The other end of the idler roller shaft is connected to a pulley by a key. The V-belt transmits the power of the motor to the idler roller shaft through the pulley, thereby driving the idler roller to rotate.

[0009] The second idler roller section includes a second idler roller shaft, a second idler roller, and a second sprocket. The second idler roller shaft is supported at both ends by channel steel. The second idler roller is mounted on the second idler roller shaft. The second sprocket is mounted on both sides of the second idler roller shaft and connected to the second idler roller shaft by keys. The second sprocket and the second idler roller shaft are fixed together by screws. The roller chain passes around the first sprocket and the second sprocket, transmitting the power of the first idler roller section to the second idler roller shaft, thereby driving the second idler roller to rotate.

[0010] The lever section includes a bearing device, a lever disc, a drive shaft, and a rocker arm. The drive shaft is mounted on the lever support frame of the frame section. The lever disc is welded to the drive shaft. The lever disc has two arc-shaped grooves that are evenly distributed along the circumference and are adapted to the outer circle of the steel bar. The arc-shaped grooves of the lever disc and the rollers of the roller section cooperate with each other in space, so that the lever section can accurately move the steel bar onto the conveying channel. The rocker arm is connected to the drive shaft through a bolt assembly and can drive the drive shaft to rotate. Under the guidance of the lever disc, the steel bar enters the roller section in an orderly manner.

[0011] The bottom plate of the frame is equipped with directional casters in the middle, and the directional casters are firmly connected to the bottom plate of the frame by bolt assembly.

[0012] The rear end of the base plate of the frame is equipped with swivel casters. The swivel casters are firmly connected to the base plate of the frame by bolt assembly. The swivel casters enable the bar adding machine to turn flexibly in a limited space.

[0013] Beneficial effects: This utility model is an optimized structural design for a bar feeder that balances conveying efficiency, manufacturing cost, and ease of maintenance. By adjusting the length of the roller chain and changing the spacing between the three rollers at the front end of the bar feeder, a symmetrical equilateral triangle layout is formed, ensuring uniform force on the steel bars during conveying and effectively suppressing bar deviation, jamming, and drop, thus improving the conveying performance of the bar feeder. By optimizing the original complex motor mounting base into a simple structure of steel plate + channel steel combination and increasing the overall height of the mounting base, the manufacturing cost of the bar feeder is reduced, and the convenience of equipment maintenance is improved. Attached Figure Description Figure 1 This is a schematic front view of the structure of this utility model; Figure 2 This is a schematic left view of the structure of this utility model; Figure 3 This is a schematic diagram of the roller distribution before optimization in this utility model; Figure 4 This is a schematic diagram of the optimized roller distribution of this utility model; Figure 5 This is a schematic front view of the structure of the motor mounting base before optimization of this utility model; Figure 6 This is a schematic front view of the optimized motor mounting base of this utility model; Figure 7 This is a schematic front view of the frame structure of this utility model; Figure 8 This is a schematic front view of the structure of the idler roller part of this utility model; Figure 9 This is a schematic front view of the structure of the second idler roller part of this utility model; Figure 10 This is a schematic front view of the structure of the lever part of this utility model; Figure 11 This is a schematic front view of the structure of the lever disc of this utility model.

[0014] In the diagram: 1. Fixed caster; 2. Transmission unit; 3. Frame unit; 4. Universal caster; 5. Idler roller unit one; 6. Roller chain; 7. Idler roller unit two; 8. Tail groove; 9. Bolt assembly; 10. Actuator rod unit; 11. Roller No. 1; 12. Roller No. 2; 13. Roller No. 3; 14. Sprocket No. 1; 15. Idler roller No. 1; 16. Idler roller shaft No. 1; 17. Key; 18. Sprocket No. 2; 19. Idler roller No. 2; 20. Idler roller shaft No. 2; 21. Bearing device; 22. Actuator rod disc; 23. Transmission shaft; 24. Rocker arm. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 and Figure 2 As shown, this utility model provides a mill bar-adding machine structure to prevent bar dropping and jamming, including a transmission part 2, a frame part 3, a first roller part 5, a roller chain 6, a tail groove 8, a lever part 10, and multiple second roller parts 7. The transmission part 2 is located at the lower part of the frame part 3, the first roller part 5 is located on the frame part 3 and above the transmission part 2, and the multiple second roller parts 7 are evenly arranged on the frame part 3. Among them, three second roller parts 7, including a first roller 11, a second roller 12, and a third roller 13, are arranged in a symmetrical equilateral triangle at the end of the frame part 3 (e.g., ...). Figure 4 As shown); the transmission unit 2 is connected to the idler roller unit 5 via pulleys and belts and transmits power; the idler roller unit 5 is connected to the idler roller unit 7 via sprockets and roller chains 6 and transmits power; the idler roller unit 5 drives the idler roller unit 7 to rotate synchronously via sprockets and roller chains 6; the lever unit 10 is connected to the tail groove 8 via bolt assembly 9, and the steel rod enters the idler roller unit in an orderly manner under the action of the lever unit 10. The idler roller unit conveys the steel rod under the action of power. When the steel rod is conveyed to the end of the rod adding machine, it is smoothly conveyed into the mill cylinder by the constraint of the triangular roller group, thus completing the rod adding operation. The idler section 27 is arranged in an equilateral triangle with the distance from the three vertices to the center being equal. When the steel bar is conveyed to this area, the outer circular surface contacts the surfaces of the three idlers simultaneously. The supporting force of each idler on the steel bar is equal in magnitude and direction, all pointing towards the center of the steel bar, forming a balanced radial constraint. This prevents the steel bar from shifting due to excessive force on one side, which could lead to bar misalignment or jamming. At the same time, the closed triangular structure forms a wrapping constraint on the steel bar from three directions, effectively suppressing the phenomenon of the steel bar falling off before entering the cylinder.

[0017] The transmission unit 2 includes a motor base, a motor, a V-belt, and a pulley. The height of the motor base is 1 / 3 of the height of the frame unit 3, and the motor is mounted on the motor base. The output shaft of the motor is connected to a pulley via a key 17, and the pulley transmits power through the V-belt.

[0018] like Figure 6 As shown, the motor base is made of a combination of steel plate and channel steel. The bottom is a support frame formed by three intersecting channel steels of different lengths. Between two longitudinal channel steels, stiffening plates are welded every 250mm along the length to form a "support wall" to enhance the overall rigidity of the frame and reduce vibration transmission during motor operation. The top steel plate is fixed to the channel steel by welding. Holes are precisely drilled on the steel plate according to the size of the motor mounting holes, and the motor is rigidly connected to the steel plate by bolts to ensure the stability of the motor position during operation.

[0019] like Figure 7 As shown, the frame part 3 is provided with a base plate and a support rod frame, the transmission part 2 is provided on the lower base plate of the frame part 3, the first support roller part 5 and multiple second support roller parts 7 are provided on the support rod frame of the frame part 3, and the support rod frame is made of two parallel channel steel welded together.

[0020] like Figure 8 As shown, the idler section 5 includes an idler shaft 16, an idler roller 15, and a sprocket 14. The idler shaft 16 is supported by a bearing mounted on a channel steel. The idler roller 15 is located at one end of the idler shaft 16 and fixed by a key. The sprocket 14 is located on both sides of the idler roller 15. The other end of the idler shaft 16 is connected to a pulley by a key. The V-belt transmits the power of the motor to the idler shaft 16 through the pulley, thereby driving the idler roller 15 to rotate.

[0021] like Figure 9 As shown, the second idler section 7 includes a second idler shaft 20, a second idler 19, and a second sprocket 18. The two ends of the second idler shaft 20 are supported by channel steel. The second idler 19 is mounted on the second idler shaft 20. The second sprocket 18 is mounted on both sides of the second idler shaft 20 and connected to the second idler shaft 20 by keys. The second sprocket 18 and the second idler shaft 20 are fixed together by screws. The roller chain 6 passes around the first sprocket 14 and the second sprocket 18 to transmit the power of the first idler section 5 to the second idler shaft 20, thereby driving the second idler 19 to rotate.

[0022] like Figure 10 and Figure 11 As shown, the lever section 10 includes a bearing device 21, a lever disc 22, a transmission shaft 23, and a rocker arm 24. The transmission shaft 23 is mounted on the support frame of the frame section 3. The lever disc 22 is welded to the transmission shaft 23. The lever disc 22 has two arc-shaped grooves that are evenly opened along the circumference and are adapted to the outer circle of the steel bar. The arc-shaped grooves of the lever disc 22 and the rollers of the roller section cooperate with each other in space, so that the lever section 10 can accurately move the steel bar onto the conveying channel. The rocker arm 24 is connected to the transmission shaft 23 through a bolt assembly and can drive the transmission shaft to rotate. The steel bar enters the roller section in an orderly manner under the guidance of the lever disc 22.

[0023] The frame section 3 has a directional caster 1 in the middle of its base plate. The directional caster 1 is firmly connected to the base plate of the frame section 3 by a bolt assembly to ensure that the bar adding machine remains stable when moving in a straight line.

[0024] The rear end of the base plate of the frame part 3 is equipped with swivel casters 4. The swivel casters 4 are firmly connected to the base plate of the frame part 3 by bolts, and the swivel casters 4 enable the bar adding machine to turn flexibly in a limited space.

[0025] When using this invention for adding steel bars in a mill, the motor of the transmission unit 2 is started, and the power is transmitted to the roller shaft of the first roller unit 5 via a V-belt, causing the rollers of the first roller unit 5 to rotate. The sprocket of the first roller unit 5 drives the second roller unit 7 to rotate synchronously via the roller chain 6. The rocker arm drives the lever shaft of the lever unit 10 to rotate, and the steel bars enter the roller unit in an orderly manner under the guidance of the lever disc. The roller unit conveys the steel bars forward under the action of power. When the steel bars are conveyed to the end of the adding machine, they are precisely guided by the triangular rollers and smoothly conveyed into the mill cylinder, completing the adding operation. This operation process, through the support of the first roller unit 5 and the second roller unit 7, the sorting of the lever unit 10, and the constraint of the triangular roller group of the second roller unit 7, achieves full positioning of the steel bars during the conveying process, effectively suppressing the phenomena of rod deviation, rod jamming, and rod dropping, and ensuring that the steel bars can finally enter the mill cylinder accurately.

[0026] This invention optimizes the original complex motor mounting base into a simple structure composed of steel plate and channel steel, and increases the overall height of the mounting base, thereby significantly reducing the overall height of the frame, reducing the material costs of the bar adding machine, and effectively saving manufacturing costs.

[0027] Using this invention for the bar feeding operation of the mill bar feeder can effectively suppress bar deviation, bar jamming, and bar dropping, thereby improving production efficiency. The motor mounting base has a reasonable structural design, low manufacturing cost, and convenient maintenance, achieving the goals of stable steel bar feeding, reduced manufacturing costs, and improved maintenance efficiency.

[0028] The above-described embodiments of this utility model are merely illustrative examples and are not the only ones. All modifications within the scope of this utility model or equivalent to this utility model are encompassed by this utility model.

Claims

1. A mill rod feeder structure for preventing rod dropping and rod jamming, characterized in that: The system includes a transmission section (2), a frame section (3), a first roller section (5), a roller chain (6), a tail groove (8), a lever section (10), and multiple second roller sections (7). The transmission section (2) is located at the lower part of the frame section (3), the first roller section (5) is located on the frame section (3) and above the transmission section (2), and multiple second roller sections (7) are evenly arranged on the frame section (3). Among them, three second roller sections (7) include a first roller (11), a second roller (12), and a third roller (13) arranged in a symmetrical equilateral triangle at the end of the frame section (3); the transmission section (2) and the second roller section (7) are connected to the frame section (3). Roller section 1 (5) is connected and transmits power through pulleys and belts; roller section 1 (5) and roller section 2 (7) are connected and transmit power through sprockets and roller chains (6); roller section 1 (5) drives roller section 2 (7) to rotate synchronously through sprockets and roller chains (6); the lever section (10) is connected to the tail groove (8) through bolt assembly (9), and the steel rod enters the roller section in an orderly manner under the action of lever section (10). The roller section transports the steel rod under the action of power. When the steel rod is transported to the end of the rod adding machine, it is smoothly transported into the mill cylinder by the constraint of the triangular roller group to complete the rod adding operation.

2. The mill rod feeding machine structure for preventing rod drop and rod jamming according to claim 1, characterized in that: The transmission part (2) includes a motor base, a motor, a V-belt and a pulley. The height of the motor base is 1 / 3 of the frame part (3). The motor is mounted on the motor base. The output shaft of the motor is connected to a pulley via a key (17). The pulley transmits power through the V-belt.

3. The rod-drop and stick-bar mill and rod charger structure according to claim 2, characterized in that: The motor base is made of steel plate and channel steel. The bottom is a support frame formed by three intersecting channel steels of different lengths. Between two longitudinal channel steels, stiffening plates are welded every 250mm along the length to form a "support wall". The top steel plate is fixed to the channel steel by welding. Holes are precisely drilled on the steel plate according to the size of the motor mounting holes, and the motor is rigidly connected to the steel plate by bolts.

4. The rod drop and stick prevention mill and rod insertion machine structure according to claim 1, characterized in that: The frame part (3) is provided with a base plate and a support rod frame. The transmission part (2) is set on the lower base plate of the frame part (3). The first support roller part (5) and multiple second support roller parts (7) are set on the support rod frame of the frame part (3). The support rod frame is made of two parallel channel steel welded together.

5. The rod drop and stick prevention mill and rod insertion machine structure according to claim 1, characterized in that: The first idler section (5) includes an idler shaft (16), an idler (15), and a sprocket (14). The first idler shaft (16) is supported by a bearing mounted on a channel steel. The first idler (15) is mounted on one end of the first idler shaft (16) and fixed by a key. The first sprocket (14) is mounted on both sides of the first idler (15). The other end of the first idler shaft (16) is connected to a pulley by a key (17). The V-belt transmits the power of the motor to the first idler shaft (16) through the pulley, thereby driving the first idler (15) to rotate.

6. The rod drop and stick prevention mill and rod insertion machine structure according to claim 1, characterized in that: The second idler section (7) includes a second idler shaft (20), a second idler (19), and a second sprocket (18). The two ends of the second idler shaft (20) are supported by channel steel. The second idler (19) is mounted on the second idler shaft (20). The second sprocket (18) is mounted on both sides of the second idler shaft (20) and connected to the second idler shaft (20) by a key. The second sprocket (18) and the second idler shaft (20) are fixed together by screws. The roller chain (6) passes around the first sprocket (14) and the second sprocket (18) to transmit the power of the first idler section (5) to the second idler shaft (20), thereby driving the second idler (19) to rotate.

7. The mill rod feeding machine structure for preventing rod drop and rod jamming according to claim 1, characterized in that: The lever part (10) includes a bearing device (21), a lever disc (22), a transmission shaft (23), and a rocker arm (24). The transmission shaft (23) is mounted on the support frame of the frame part (3). The lever disc (22) is welded to the transmission shaft (23). The lever disc (22) has two arcs that are evenly opened along the circumference and are adapted to the outer circle of the steel bar. The lever disc (22) and the rollers of the roller part cooperate with each other in space, so that the lever part (10) can accurately push the steel bar onto the conveying channel. The rocker arm (24) is connected to the transmission shaft (23) through a bolt assembly and can drive the transmission shaft to rotate. The steel bar enters the roller part in an orderly manner under the guidance of the lever disc (22).

8. The rod drop and stick prevention mill and rod insertion machine structure according to claim 1, characterized in that: The frame part (3) has a directional caster (1) in the middle of the bottom plate. The directional caster (1) is firmly connected to the bottom plate of the frame part (3) by bolt assembly.

9. A rod drop-out and stick mill rod loading structure according to any one of claims 1 to 8, characterised in that: The rear end of the bottom plate of the frame part (3) is provided with a universal caster (4). The universal caster (4) is firmly connected to the bottom plate of the frame part (3) by a bolt assembly. The universal caster (4) enables the bar adding machine to turn flexibly in a limited space.

Images