Roller structure of withdrawal and straightening machine for metallurgical forming

Abstract

The utility model relates to a roller structure of a withdrawal and straightening machine for metallurgical forming, which is applied to the field of withdrawal and straightening machines and comprises a mandrel, a positioning sleeve fixedly sleeved on the outer surface of the mandrel, a mounting sleeve fixedly sleeved on the outer surface of the positioning sleeve, a plurality of sliding grooves formed in the outer surface of the mounting sleeve, sliding strips arranged in the sliding grooves, and a shell fixedly connected with the outer surfaces of the sliding strips. The left ends of the shells are fixedly connected with inserting rods, the outer surface of the mandrel is sequentially and fixedly sleeved with a mounting plate and a positioning plate in a sliding mode from left to right, and the left end of the positioning plate is fixedly connected with a plurality of inserting plates corresponding to the shells. The roller is divided into the core shaft and the shells, the shells are fixedly connected to the surface of the core shaft, when the surface of the roller is abraded and damaged, the shell at the damaged part can be replaced, disassembly and assembly are easy, time consumed by shutdown replacement is short, and waste of the roller is small.

Description

Technical Field

[0001] This utility model relates to a roller structure, and more particularly to a roller structure for a metallurgical forming straightening machine applied in the field of straightening machines. Background Technology

[0002] The straightening machine is a crucial piece of equipment in continuous casting machines. During production, the upper and lower rollers clamp the billet using hydraulic cylinders, and a motor drives the billet to pull it away and straighten it. The straightening machine operates in a harsh environment: the rollers are in direct contact with the high-temperature billet; the straightening machine may be the only power source for pulling the billet in the continuous casting machine, relying on the friction between the rollers and the billet to overcome the resistance of the billet in the crystallizer and secondary cooling zone. The pressure between the rollers and the high-temperature billet is high, and the contact is tight; the roller speed is relatively low, and the larger the billet cross-section, the lower the roller speed, generally between 1 and 5 m / min.

[0003] Chinese Patent Publication No. CN220999758U discloses a roller structure for a continuous production line of ultra-thin strip steel. The roller mandrel and roller cylinder of this utility model adopt a hollow structure, which can reduce the weight of the roller structure and reduce the rotational inertia of the roller, thereby reducing the tension fluctuation of ultra-thin strip steel during acceleration and deceleration, improving the product quality and production efficiency of ultra-thin strip steel, and avoiding quality defects and strip breakage of ultra-thin strip steel.

[0004] The above-mentioned utility model will also encounter the following problems in actual application: The roller structure is an integral type. Due to the harsh working environment of the straightening machine, the roller cooling effect is not good. In particular, the surface of the roller is prone to wear and damage, resulting in a short service life of the roller. When part of the roller surface is damaged, the entire roller needs to be replaced, which not only causes great waste, but also makes the disassembly and assembly of the integral roller more complicated, and the downtime for replacement is longer, resulting in greater losses. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that most existing roller structures are integral. When the surface of the roller is damaged, the entire roller needs to be replaced, which not only causes great waste, but also takes more time to replace and results in greater losses.

[0006] To address the aforementioned problems, this utility model provides a roller structure for a metallurgical forming straightening machine, comprising a mandrel, a positioning sleeve fixedly fitted on the outer surface of the mandrel, an mounting sleeve fixedly fitted on the outer surface of the positioning sleeve, multiple grooves carved on the outer surface of the mounting sleeve, a slide bar provided in the groove, a housing fixedly connected to the outer surface of the slide bar, an insert rod fixedly connected to the left end of the housing, a mounting plate and a positioning plate slidably fitted and fixedly fitted on the outer surface of the mandrel from left to right, multiple insert plates corresponding to multiple housings fixedly connected to the left end of the positioning plate, the insert plates movably penetrating through the mounting plate, the left end of the insert rod movably penetrating through the positioning plate and the mounting plate and threaded with a nut, a baffle movably fitted on the right end of the mandrel, and a fixed connection to the inner cavity of the mandrel. The positioning component includes two support plates fixedly connected to the inner wall of the mandrel. A screw is rotatably connected between the two support plates. The right end of the screw rotates through the right support plate and is fixedly connected to a knob. A slider is threaded onto the outer surface of the screw. Multiple U-shaped plates are provided on the outer surface of the slider. The end of the U-shaped plate away from the slider is fixedly connected to the inner wall of the mandrel. A tension spring is fixedly connected to the transverse inner wall of the U-shaped plate. A slide plate is fixedly connected to the end of the tension spring away from the slider. A locking block is fixedly connected to the end of the slide plate away from the tension spring. The locking block moves through the mandrel at the end away from the slide plate. A push rod is fixedly connected to the end of the slide plate near the tension spring. The end of the push rod near the slider moves through the tension spring and the U-shaped plate in sequence and fits against the slider.

[0007] In the roller structure of the above-mentioned metallurgical forming straightening machine, compared with the traditional integral roller structure, the roller in this utility model is divided into a mandrel and multiple outer shells. The multiple outer shells are fixedly connected to the surface of the mandrel. When the surface of the roller is worn and damaged, the outer shell of the damaged part can be replaced. Not only is disassembly and assembly simple, but the time spent on replacement during downtime is also short, and less waste of rollers is also achieved.

[0008] As a further improvement of this application, the outer shell is arc-shaped, and two adjacent outer shells fit together, with the right end of the positioning plate fitting together with the outer shell.

[0009] As a further improvement to this application, the interior of the positioning sleeve is honeycomb-shaped, the slide bar is T-shaped, and the length of the slide bar is the same as the length of the mounting sleeve.

[0010] As a further improvement of this application, the left end of the card block is attached to the right end of the baffle, and the diameter of the baffle is the same as the diameter of the outer shell.

[0011] As another improvement of this application, the slider is in the shape of a frustum, with the small diameter end of the slider facing the positioning plate, the end of the push rod near the slider being rounded, and multiple U-shaped plates arranged in a ring array around the central axis of the spindle.

[0012] As another improvement of this application, the inner wall of the mandrel is chiseled with two limiting grooves, and the right end of the slider is fixedly connected with two L-shaped limiting rods, the end of the limiting rod away from the slider moving through into the limiting groove.

[0013] In summary, in practical applications, when the surface of a portion of the outer casing becomes worn and needs replacement, the knob can be turned to rotate the screw, causing the slider to move to the right. The push rod moves towards the screw, causing the locking block to move inwards towards the spindle until the locking block no longer contacts the surface of the baffle. Then, the nut of the outer casing to be replaced is unscrewed, and the insertion rod is pushed to the right, causing the insertion rod to disengage from the positioning plate. The right end of the slide bar is exposed, making it easy for the operator to remove the entire slide bar. A new slide bar can then be inserted to replace the new outer casing. This method is not only simple to disassemble and assemble, but also minimizes downtime for replacement and reduces waste of rollers. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0015] Figure 2 This is a structural cross-sectional view of the first embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the outer shell structure according to the first embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the mounting plate structure according to the first embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the mandrel structure according to the first embodiment of this application;

[0019] Figure 6 This is an exploded view of the positioning component structure according to the first embodiment of this application;

[0020] Figure 7 This is a cross-sectional view of the structure of the second embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Mandrel, 2. Positioning sleeve, 3. Mounting sleeve, 4. Limiting rod, 5. Slide groove, 6. Slide bar, 7. Housing, 8. Insert rod, 9. Mounting plate, 10. Positioning plate, 11. Insert plate, 12. Baffle, 13. Support plate, 14. Screw, 15. Slider, 16. U-shaped plate, 17. Tension spring, 18. Slide plate, 19. Locking block, 20. Top rod, 21. Limiting groove. Detailed Implementation

[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] First implementation method:

[0025] Figure 1 , Figure 2 , Figure 3 and Figure 4 The diagram shows a roller structure for a metallurgical forming straightening machine, including a mandrel 1. A positioning sleeve 2 is fixedly fitted onto the outer surface of the mandrel 1. The interior of the positioning sleeve 2 is honeycomb-shaped. An mounting sleeve 3 is fixedly fitted onto the outer surface of the positioning sleeve 2. Multiple grooves 5 are chiseled into the outer surface of the mounting sleeve 3. Sliding strips 6 are provided in the grooves 5. The sliding strips 6 are T-shaped, and their length is the same as the length of the mounting sleeve 3. The sliding strips 6 can limit the outer shell 7, thereby effectively preventing the outer shell 7 from falling off. The outer shell 7 is fixedly connected to the outer surface of the sliding strip 6. The outer shell 7 is arc-shaped, and two adjacent outer shells 7 fit together. The right end of the positioning plate 10... The mandrel 1 fits snugly against the outer shell 7 and is fixedly positioned thereon. The left end of the outer shell 7 is fixedly connected to the insert rod 8. The outer surface of the mandrel 1 is slidably fitted and fixedly fitted with the mounting plate 9 and the positioning plate 10 from left to right. The left end of the positioning plate 10 is fixedly connected to multiple insert plates 11, which correspond to multiple outer shells 7 respectively. The insert plates 11 movably pass through the mounting plate 9 and can limit and fix the mounting plate 9. The left end of the insert rod 8 movably passes through the positioning plate 10 and the mounting plate 9 and is threaded with a nut. The nut can fix the insert rod 8 to the mounting plate 9 and the positioning plate 10, thereby effectively improving the stability of the roller when it rotates.

[0026] Figure 2 , Figure 5 and Figure 6The diagram shows that a baffle 12 is movably fitted onto the right end of the mandrel 1, which can block the right side of multiple outer shells 7. A positioning assembly is fixedly connected to the inner cavity of the mandrel 1. The positioning assembly includes two support plates 13 fixedly connected to the inner wall of the mandrel 1. A screw 14 is rotatably connected between the two support plates 13. The right end of the screw 14 rotatably passes through the right support plate 13 and is fixedly connected to a knob, which facilitates the rotation of the screw 14. A slider 15 is threaded onto the outer surface of the screw 14. The slider 15 is frustum-shaped, and the small diameter end of the slider 15 faces the positioning plate 10. When the screw 14 rotates, the slider 15 moves left and right, thereby squeezing multiple push rods 20 and forcing the slide plate 18 to move, thereby causing the locking block 19 to move to block the baffle 12. Multiple U-shaped plates 16 are provided on the outer surface of the slider 15, with the U-shaped plates 16 away from the slider. One end of the U-shaped plate 16 is fixedly connected to the inner wall of the spindle 1. A tension spring 17 is fixedly connected to the transverse inner wall of the U-shaped plate 16. The tension spring 17 facilitates the movement and reset of the locking block 19. A sliding plate 18 is fixedly connected to the end of the tension spring 17 away from the slider 15. A locking block 19 is fixedly connected to the end of the sliding plate 18 away from the tension spring 17. The end of the locking block 19 away from the sliding plate 18 moves through the spindle 1. A push rod 20 is fixedly connected to the end of the sliding plate 18 near the tension spring 17. The end of the push rod 20 near the slider 15 moves through the tension spring 17 and the U-shaped plate 16 in sequence and fits against the slider 15. The left end of the locking block 19 fits against the right end of the baffle 12. The diameter of the baffle 12 is the same as the diameter of the outer shell 7. The end of the push rod 20 near the slider 15 is rounded to facilitate the movement of the push rod 20. Multiple U-shaped plates 16 are arranged in a ring array around the central axis of the spindle 1.

[0027] When the surface of part of the outer shell 7 is worn and needs to be replaced, the knob can be turned to drive the screw 14 to rotate, causing the slider 15 to move to the right. The push rod 20 moves toward the screw 14, causing the locking block 19 to move into the spindle 1 until the locking block 19 no longer contacts the surface of the baffle 12. Then, the nut of the outer shell 7 to be replaced is unscrewed, and the insertion rod 8 is pushed to the right, causing the insertion rod 8 to disengage from the positioning plate 10. The right end of the slide bar 6 is exposed, making it easy for the staff to remove the entire slide bar 6. Then, a new slide bar 6 can be inserted to replace the new outer shell 7. Not only is disassembly and assembly simple, but the time spent on replacement is also short, and the waste of rollers is also less.

[0028] Second implementation method:

[0029] This embodiment adds a limiting groove 21 and a limiting rod 4 to the first embodiment, while the rest remains the same as the first embodiment.

[0030] The figure shows that the inner wall of the spindle 1 has two limiting grooves 21, and the right end of the slider 15 is fixedly connected to two L-shaped limiting rods 4. The end of the limiting rod 4 away from the slider 15 moves through the limiting groove 21.

[0031] When the screw 14 is rotated, the limiting rod 4 moves along with the slider 15. Through the cooperation of the limiting rod 4 and the limiting groove 21, the slider 15 can be limited, forcing the slider 15 to only make horizontal linear movements, thereby effectively improving the stability of the slider 15 when it moves.

[0032] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A roll structure of a stretch leveler for metallurgical forming, comprising a mandrel (1), characterized in that: The outer surface of the mandrel (1) is fixedly sleeved with a positioning sleeve (2), the outer surface of the positioning sleeve (2) is fixedly sleeved with a mounting sleeve (3), a plurality of sliding grooves (5) are opened on the outer surface of the mounting sleeve (3), the sliding grooves (5) are provided with sliding strips (6), the outer surface of the sliding strips (6) is fixedly connected with shells (7), the left end of the shell (7) is fixedly connected with a plug rod (8), the outer surface of the mandrel (1) is sequentially and slidably sleeved and fixedly sleeved with mounting plates (9) and positioning plates (10) from left to right, the left end of the positioning plate (10) is fixedly connected with a plurality of plug plates (11) corresponding to the plurality of shells (7), the plug plates (11) movably penetrate the mounting plates (9), the left end of the plug rod (8) sequentially movably penetrates the positioning plates (10) and the mounting plates (9) and is threadedly sleeved with nuts. The right end of the mandrel (1) is movably sleeved with a baffle (12), the inner cavity of the mandrel (1) is fixedly connected with a positioning assembly, the positioning assembly comprises two support plates (13) fixedly connected to the inner wall of the mandrel (1), a screw rod (14) rotatably connected between the two support plates (13), the right end of the screw rod (14) rotatably penetrates the right support plate (13) and is fixedly connected with a knob, the outer surface of the screw rod (14) is threadedly sleeved with a sliding block (15), the outer surface of the sliding block (15) is provided with a plurality of U-shaped plates (16), one end of the U-shaped plate (16) away from the sliding block (15) is fixedly connected with the inner wall of the mandrel (1), the transverse inner wall of the U-shaped plate (16) is fixedly connected with a tension spring (17), one end of the tension spring (17) away from the sliding block (15) is fixedly connected with a sliding plate (18), one end of the sliding plate (18) away from the tension spring (17) is fixedly connected with a clamping block (19), one end of the clamping block (19) away from the sliding plate (18) movably penetrates the mandrel (1), one end of the sliding plate (18) close to the tension spring (17) is fixedly connected with a jacking rod (20), one end of the jacking rod (20) close to the sliding block (15) sequentially movably penetrates the tension spring (17) and the U-shaped plate (16) and is attached to the sliding block (15).

2. A roll arrangement for a straightening and levelling machine for metallurgical forming according to claim 1, characterized in that: The shell (7) is arc-shaped, and adjacent two shells (7) are attached to each other, the right end of the positioning plate (10) is attached to the shell (7).

3. A roll arrangement for a straightening and levelling machine for metallurgical forming according to claim 1, characterized in that: The inner part of the positioning sleeve (2) is honeycomb-shaped, and the sliding strip (6) is T-shaped as a whole, and the length of the sliding strip (6) is consistent with the length of the mounting sleeve (3).

4. A roll arrangement for a straightening and leveling machine for metallurgical forming according to claim 1, characterized in that: The left end of the clamping block (19) is attached to the right end of the baffle (12), and the diameter of the baffle (12) is consistent with the diameter of the shell (7).

5. A roll arrangement for a straightening and leveling machine for metallurgical forming according to claim 1, characterized in that: The sliding block (15) is circular truncated cone-shaped as a whole, and the small diameter end of the sliding block (15) faces the positioning plate (10), one end of the jacking rod (20) close to the sliding block (15) is rounded, and a plurality of U-shaped plates (16) are annularly arranged around the central axis of the mandrel (1).

6. A roll arrangement for a straightening and leveling machine for metallurgical forming according to claim 1, characterized in that: The inner wall of the mandrel (1) is bored with two limiting grooves (21), the right end of the sliding block (15) is fixedly connected with two L-shaped limiting rods (4), and the end, away from the sliding block (15), of the limiting rod (4) is movably penetrated into the limiting groove (21).

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