Steel ball rolling mill with online quick change function and quick change method thereof

Abstract

The present application relates to a kind of steel ball rolling mill with online quick change function and its quick change method, belong to rolling mill technical field, including rolling mill body, rolling mill body is connected with rotary drive device by joint shaft, and rolling mill body is arranged on slide, slide includes two slide rails, which are arranged in the axial direction of the roll system parallel to the rolling mill body, the middle part of slide rail is working position, and the both ends of slide rail are quick change position, locking mechanism is arranged in the position corresponding to the working position of slide rail to lock the rolling mill body, and the rolling mill body is connected with transverse drive mechanism to drive the rolling mill body to move along slide rail, to realize the switching between working position and quick change position;The side close to rotary drive device of working position is provided with joint shaft bracket to make joint shaft connect or separate from the roll system of rolling mill body.The present application can realize the automatic quick change of rolling mill, reduce the roll change downtime of whole production line, and reduce labor cost.

Description

Technical Field

[0001] This invention belongs to the field of rolling mill technology and relates to a steel ball rolling mill with online quick-change function and the quick-change method thereof. Background Technology

[0002] A ball mill is a type of machinery used to process metallic materials, typically by rolling metals (such as steel and aluminum) into spherical or hemispherical shapes through a series of rolling processes. A ball mill usually consists of a set of rolls that can achieve plastic deformation of the metal material through different rolling processes, ultimately forming the desired spherical or hemispherical product.

[0003] A ball mill uses rolling to repeatedly press and deform metal materials, gradually forming spherical or hemispherical products. During the rolling process, the metal material is squeezed and stretched by the rollers, causing its shape to gradually change. However, due to the contact and compression of the metal material during the rolling process, the roller components of the ball mill gradually wear down, necessitating frequent roller replacements.

[0004] To replace the roll system in a ball mill, the top cover plate of the ball mill is typically opened. The roll system is then gripped from above using the changeover manipulator's gripper, lifted from the roll plane to a horizontal changeover plane with a greater vertical height than the roll plane, and removed. Afterward, the new roll system is installed into the ball mill body in the opposite direction. The top cover plate is then reinstalled, and the ball mill begins operation with the new roll system.

[0005] The downside is that replacing the ball mill roll system using the above methods is very time-consuming, typically causing the ball mill production line to shut down for 1.5-2 hours, which increases maintenance costs to some extent. Furthermore, the original ball mill side pressure device is located outside the archway, affecting the integrity of the original archway; its rigidity and deformation resistance are poor. Additionally, the balancing device uses spring balancing, which is prone to failure during roll gap adjustment due to unstable spring load, and cannot be effectively adjusted. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a steel ball rolling mill with online quick-change function and a quick-change method thereof, so as to realize automatic quick-change of the rolling mill.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A steel ball rolling mill with online quick-change function includes a mill body. The mill body is connected to a rotary drive device via a connecting shaft to provide power to the mill body. The mill body is mounted on a slide block, which includes two slide rails arranged axially parallel to the roll system of the mill body. The middle of the slide rails is the working position, and the two ends of the slide rails are quick-change positions. A locking mechanism is provided at the position of the slide rail corresponding to the working position to lock the mill body. The mill body is connected to a transverse drive mechanism to drive the mill body to move along the slide rails, realizing the switching between the working position and the quick-change position. A connecting shaft bracket is provided on the side of the working position near the rotary drive device to connect or disconnect the connecting shaft from the roll system of the mill body. The connecting shaft bracket includes a fixed frame, on which a sliding frame is slidably connected. The sliding frame is connected to a bracket transverse drive mechanism to drive it to move in a direction parallel to the slide rails. The sliding frame is provided with a connecting shaft lifting mechanism with lifting function to lift the connecting shaft. The connecting shaft is a telescopic shaft structure capable of axial extension and retraction.

[0009] Optionally, the shaft lifting mechanism includes a support arm that is arranged opposite to the shaft and hinged to the sliding frame in the middle. One end of the support arm has a lifting structure that matches the shaft, and the other end is connected to a lifting drive mechanism to make the lifting structure contact or disengage from the shaft. The lifting structure is V-shaped or arc-shaped.

[0010] Optionally, the traverse drive mechanism is connected to the mill body via a pin, and the pin is connected to a pin drive mechanism to drive the pin to insert into or disengage from pin holes provided on the traverse drive mechanism and the mill body.

[0011] Optionally, the lateral movement drive mechanism is located between the two slide rails, and the power for the lateral movement drive mechanism is a hydraulic cylinder.

[0012] Optionally, the output shaft of the rotary drive is arranged parallel to the roll system of the mill body to reduce the deflection angle of the shaft.

[0013] Optionally, the mill body includes two arches arranged vertically and a roll system located between the two arches; the lower arch is mounted on a slide rail, and the roll system is rotatably positioned between the two arches; a side-pressing mechanism and a balancing mechanism are respectively provided on both sides of the roll system; the side-pressing mechanism is located on the inner side of the arch, and one end of the side-pressing mechanism presses against the roll system through a pressure head to drive the roll system to move, thereby adjusting the roll gap; one end of the balancing mechanism is connected to the arch, and the other end is connected to the roll system, applying a force opposite to that of the side-pressing mechanism to the roll system, so that the roll system is balanced by forces.

[0014] Optionally, the archway is an integral steel plate structure, with two archways fixedly connected by a frame. The bottom of the lower archway is equipped with a detachable wear-resistant sliding plate, and the archway slides in cooperation with the slide rail via the wear-resistant sliding plate.

[0015] Optionally, the side pressure mechanism uses a hydraulic motor to drive a worm gear to achieve roll gap adjustment.

[0016] A quick-change method for a ball mill with online quick-change function, based on the aforementioned ball mill, involves pre-installing the new mill body and placing it on the quick-change position of the slide rail before replacing the mill body. During replacement, the locking mechanism on the working position is first loosened, the connecting shaft bracket lifts the connecting shaft and drives the connecting shaft to disengage from the roll system, and then the old mill body is moved to the empty quick-change position by the transverse drive mechanism. After that, the new mill body is moved to the working position and locked by the locking mechanism. The connecting shaft bracket drives the connecting shaft to connect with the roll system of the new mill body. After the connection is completed, the connecting shaft bracket disengages from the connecting shaft, completing the quick mill change.

[0017] Optionally, the traverse drive mechanism is connected to the mill body in the working state, and disengaged from the mill body in the non-working state.

[0018] The present invention has the following beneficial effects:

[0019] 1) A track is installed below the ball mill, and the ball mill body can slide on the track, which can realize the rapid and automatic switching of the ball mill station, realize the quick change of the mill, reduce the downtime of the entire production line for roll changing, and reduce labor costs.

[0020] 2) A horizontally movable connecting shaft bracket is installed below the connecting shaft of the ball mill to facilitate the connection and disconnection of the connecting shaft and the rolls in conjunction with the rapid switching of the ball mill station.

[0021] 3) The side pressure mechanism of the steel ball rolling mill roll system is located inside the archway. At the same time, the rolling mill archway is made of an integral steel plate, which ensures the integrity of the archway and improves the overall rigidity and deformation resistance of the steel ball rolling mill.

[0022] 4) The balancing mechanism of the steel ball mill roll system can keep the rolls always in contact with the pressure head of the side pressure mechanism, maintain a constant balancing force during the adjustment of the roll gap, and the balancing force is controllable and adjustable.

[0023] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of the steel ball rolling mill with online quick-change function in this invention;

[0026] Figure 2 for Figure 1K-direction diagram;

[0027] Figure 3 This is a schematic diagram of the transverse movement device;

[0028] Figure 4 Schematic diagram of the shaft bracket Figure 1 ;

[0029] Figure 5 Schematic diagram of the shaft bracket Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the structure of the rolling mill body;

[0031] Figure 7 This is a schematic diagram of the installation of the wear-resistant sliding plate at the bottom of the archway.

[0032] Reference numerals in the attached drawings: 1. Rolling mill body; 2. Transverse movement device; 3. Shaft support bracket; 4. Shaft; 5. Rotary drive device; 11. Archway; 12. Roll system; 13. Side pressure mechanism; 14. Balancing mechanism; 15. Wear-resistant sliding plate; 21. Base; 22. Slide rail; 23. Transverse movement hydraulic cylinder; 24. Pin cylinder; 25. Locking hydraulic cylinder; 31. Fixed frame; 32. Support bracket transverse movement cylinder; 33. Shaft lifting cylinder; 34. Support arm. Detailed Implementation

[0033] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0035] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] Please see Figures 1-7 A steel ball rolling mill with online quick-change function includes a mill body 1. The mill body 1 is connected to a rotary drive device 5 via a connecting shaft 4 to provide power to the mill body 1. The mill body 1 is mounted on a slide block, which includes two slide rails 22 arranged parallel to the axial direction of the roll system of the mill body 1. The middle part of the slide rails 22 is the working position, and the two ends of the slide rails 22 are quick-change positions. Locking mechanisms are provided at the positions of the slide rails 22 corresponding to the working positions to lock the mill body 1. The mill body 1 is connected to a transverse drive mechanism to drive the mill body 1 to move along the slide rails 22 to achieve... Switching between the working position and the quick change position; the working position is provided with a shaft support bracket 3 on the side near the rotary drive device 5 so that the shaft 4 can be connected or disconnected from the roll system 12 of the mill body 1; the shaft support bracket 3 includes a fixed frame 31, and a sliding frame is provided on the fixed frame 31 and slidably connected thereto. The sliding frame is connected to a support transverse movement drive mechanism to drive the sliding frame to move in a direction parallel to the slide rail 22. The support transverse movement drive mechanism can be a hydraulic cylinder; the sliding frame is provided with a shaft lifting mechanism with lifting function to lift the shaft 4; the shaft 4 can be axially extended and retracted and can be a spline structure.

[0037] The mill body 1 includes two vertically arranged arches 11 and a roll system 12 located between the two arches 11. The lower arch 11 is mounted on a slide rail 22, and the roll system 12 is rotatably positioned between the two arches 11. A side-pressing mechanism 13 and a balancing mechanism 14 are respectively provided on both sides of the roll system 12. The balancing mechanism 14 can be a balancing hydraulic cylinder. The side-pressing mechanism 13 is located inside the arches 11, ensuring the integrity of the arches 11 and thus providing them with sufficient rigidity and resistance to deformation. One end of the side-pressing mechanism 13 is pressed against the roll system 12 via a pressure head to drive the roll system 12 to move. The roller gap is adjusted by moving the rollers; one end of the balancing mechanism 14 is connected to the archway 11 and the other end is connected to the roller system 12, applying a force opposite to that of the side pressure mechanism 13 to the roller system 12, so that the roller system 12 is balanced by force; the archway 11 is an integral steel plate structure, and the two archways 11 are fixedly connected by a frame. The bottom of the lower archway 11 is provided with a detachable wear-resistant sliding plate 15. The archway 11 slides with the slide rail 22 through the wear-resistant sliding plate 15. The wear-resistant sliding plate 15 can be removed and replaced after wear; the side pressure mechanism 13 uses a hydraulic motor to drive the worm gear to achieve roller gap adjustment.

[0038] The shaft support mechanism can have the following structure: it includes a support arm 34 that is arranged opposite to each other and hinged to the sliding frame in the middle. One end of the support arm 34 has a support structure that matches the shaft 4, and the other end is connected to a support drive mechanism to make the support structure contact or disengage from the shaft 4; the support structure can be V-shaped or arc-shaped.

[0039] The transverse drive mechanism and the mill body 1 can be connected by a pin. The pin is connected to a pin drive mechanism to drive the pin to insert into or disengage from the pin holes provided on the transverse drive mechanism and the mill body 1.

[0040] The transverse drive mechanism should be located in the middle of the two slide rails 22, and the power source for the transverse drive mechanism can be a hydraulic cylinder.

[0041] In order to reduce the deflection angle of the connecting shaft 4 and improve its stability and service life, the present invention arranges the output shaft of the rotary drive device 5 and the roll system 12 of the rolling mill body 1 in parallel.

[0042] This invention also provides a quick-change method for a ball mill with online quick-change function. Based on the ball mill described above, before replacing the mill body 1, the new mill body 1 is pre-installed and placed on the quick-change position of the slide rail 22. During replacement, the locking mechanism on the working position is first loosened, the connecting shaft bracket 3 lifts the connecting shaft 4 and drives the connecting shaft 4 to disengage from the roll system 12. Then, the old mill body 1 is moved to the empty quick-change position by the transverse drive mechanism. After that, the new mill body 1 is moved to the working position and locked by the locking mechanism. The connecting shaft bracket 3 drives the connecting shaft 4 to connect with the roll system 12 of the new mill body 1. After the connection is completed, the connecting shaft bracket 3 disengages from the connecting shaft 4, completing the quick mill change.

[0043] To protect the transverse drive mechanism, the present invention connects the transverse drive mechanism to the mill body 1 in the working state and disconnects it from the mill body 1 in the non-working state. This method is beneficial to protect the transverse drive mechanism.

[0044] Example

[0045] A steel ball rolling mill with online quick-change function, such as Figures 1-7 As shown, the mill includes a mill body 1 and a rotary drive device 5 that provides power to the mill body 1 via a connecting shaft 4. The rotary drive device 5 is a reducer. It also includes a transverse movement device 2, which includes a transverse movement hydraulic cylinder 23, a slide rail 22, and a pin cylinder 24. The slide rail 22 is fixedly installed on the foundation via a base 21. The mill body 1 is slidably installed on the slide rail 22. The transverse movement hydraulic cylinder 23 is arranged along the length of the slide rail 22 and is detachably connected to the mill body 1 via the pin cylinder 24. A working position is provided on the slide rail 22, and quick-change positions are provided on both sides of the working position. One of the quick-change positions is used to place the new mill body to be replaced. During replacement, the old mill body 1 and the new mill body are switched between the working position and the quick-change position by the transverse movement hydraulic cylinder 23, realizing online quick-change of the mill.

[0046] Among them, a shaft connecting bracket 3 is provided on the side of the working position near the reducer 5. The shaft connecting bracket 3 includes a fixed frame 31, a sliding frame, a bracket transverse cylinder 32, and a shaft connecting lifting cylinder 33. The fixed frame 31 is fixedly installed on one side of the slide rail 22, and the sliding frame is slidably installed on the fixed frame 31. The shaft connecting lifting cylinder 33 is installed on the sliding frame, and one end of the shaft connecting lifting cylinder 33 is connected to a support arm 34. The support arm 34 is located below the connecting shaft 4. Under the drive of the shaft connecting lifting cylinder 33, the support arm 34 contacts and lifts the connecting shaft 4 or separates from the connecting shaft 4. The bracket transverse cylinder 32 is connected to the sliding frame and drives the sliding frame to move along the axial direction of the inner roll system 12 of the mill body 1, thereby causing the connecting shaft 4 to disengage from or connect with the roll system 12.

[0047] The transverse hydraulic cylinder 23 is connected to the mill body 1 by a pin. The pin cylinder 24 is installed at the front end of the transverse hydraulic cylinder 23 and is connected to the pin, driving the pin to insert into or disengage from the connected pin hole.

[0048] A locking mechanism is installed at the working position, and the locking mechanism is driven by the locking hydraulic cylinder 25 to lock the mill body 1.

[0049] In this embodiment, the mill body 1 includes two arches 11 and a roll system 12 disposed between the arches 11; the arches 11 are integral steel plate structures, and the two arches 11 are fixedly connected by a frame. The bottom of the arches 11 is provided with a wear-resistant sliding plate 15 that can be detachably connected. The arches 11 slide with the slide rail 22 through the wear-resistant sliding plate 15. The roll system 12 is rotatably disposed between the two arches 11; a side pressure mechanism 13 and a balancing mechanism 14 are provided on one side of the roll system 12.

[0050] The side pressure mechanism 13 is fixedly installed inside the archway 11. One end of the side pressure mechanism 13 is pressed against the roller system 12 through the pressure head. The side pressure mechanism 13 uses a hydraulic motor to drive the worm gear to move the roller system 12, thereby adjusting the roller gap. One end of the balancing mechanism 14 is connected to the archway 11, and the other end is connected to the roller system 12. It applies a force opposite to that of the side pressure mechanism 13 to the roller system 12, so that the roller system 12 is balanced by force.

[0051] In this embodiment, the output shaft of the reducer 5 is arranged parallel to the roller system 12.

[0052] The replacement steps for the rolled piece are as follows: Before replacing the mill body 1, the new mill body is pre-installed and placed on the quick change position of the slide rail 22. During replacement, the locking hydraulic cylinder 25 on the working position is retracted first to release the mill body 1. The shaft lifting cylinder 33 drives the support arm 34 to lift the shaft 4. The bracket transverse cylinder 32 drives the shaft 4 to disengage from the roll system 12. The shaft 4 is a telescopic structure. Then, the old mill body 1 is moved to the empty quick change position by the transverse hydraulic cylinder 23. After that, the new mill body is moved to the working position and locked by the locking hydraulic cylinder 25. The bracket transverse cylinder 32 drives the shaft 4 to connect with the roll system 12. After the roll system 12 is connected, the support arm 34 is lowered, and the shaft support 3 is disengaged from the shaft 4. This does not affect the normal operation of the ball mill and completes the quick change.

[0053] During the quick change process, the transverse hydraulic cylinder 23 is controlled by the pin cylinder 24. It is connected to the mill body 1 in the working state and disconnected from the mill body 1 in the non-working state.

[0054] The main body 1 of the ball mill of the present invention can slide on the track, which can realize the rapid and automatic switching of the working position of the ball mill. A horizontally movable connecting shaft bracket 3 is set below the connecting shaft 4 of the ball mill. With the rapid switching of the working position of the ball mill, the connecting shaft 4 and the roll can be connected and disconnected, realizing the quick change of the mill and reducing the downtime of the entire production line for changing rolls.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A steel ball rolling mill with online quick-change function, comprising a mill body (1), the mill body (1) being connected to a rotary drive device (5) via a connecting shaft (4), characterized in that: It also includes a transverse movement device (2), which includes a slide block and a transverse movement drive mechanism. The slide block includes two slide rails (22) arranged parallel to the axial direction of the roll system of the mill body (1). The middle part of the slide rail (22) is the working position, and the two ends of the slide rail (22) are quick-change positions. The slide rail (22) is provided with a locking mechanism at the position corresponding to the working position to lock the mill body (1). The mill body (1) is connected to the transverse movement drive mechanism to drive the mill body (1) to move along the slide rail, thereby realizing the switching between the working position and the quick-change position. A shaft support bracket (3) is provided on the side of the working position near the rotary drive device (5). The shaft support bracket (3) includes a fixed frame (31). A sliding frame is slidably connected to the fixed frame (31). The sliding frame is connected to a bracket transverse drive mechanism to drive it to move in a direction parallel to the slide rail. A shaft lifting mechanism with lifting function is provided on the sliding frame to lift the shaft (4). The shaft (4) is a spline structure that can extend and retract axially. The rolling mill body (1) includes two arches (11) arranged vertically and an upper and lower arches (11) and a roller system (12) located between the two arches (11); the lower arch (11) is located on a slide rail (22), and the roller system (12) is rotatably located between the two arches (11); a side pressure mechanism (13) and a balancing mechanism (14) are respectively provided on both sides of the roller system (12). The side pressure mechanism (13) is located inside the archway (11). One end of the side pressure mechanism (13) is pressed against the roller system (12) through the pressure head to drive the roller system (12) to move, thereby adjusting the roller gap. One end of the balancing mechanism (14) is connected to the archway (11), and the other end is connected to the roller system (12). It applies a force opposite to that of the side pressure mechanism (13) to the roller system (12) so that the roller system (12) is balanced by force. The archway (11) is an integral steel plate structure. The two archways are fixedly connected by a frame. The bottom of the lower archway (11) is provided with a detachable wear-resistant sliding plate (15). The archway (11) slides and engages with the slide rail (22) through the wear-resistant sliding plate (15).

2. The steel ball rolling mill with online quick-change function according to claim 1, characterized in that: The shaft lifting mechanism includes a support arm (34) that is arranged opposite to the shaft (4) and hinged to the sliding frame in the middle. One end of the support arm (34) has a lifting structure that matches the shaft (4), and the other end is connected to a lifting drive mechanism to make the lifting structure contact or disengage from the shaft (4). The lifting structure is V-shaped or arc-shaped.

3. The steel ball rolling mill with online quick-change function according to claim 1, characterized in that: The transverse drive mechanism is connected to the mill body (1) by a pin. The pin is connected to a pin drive mechanism to drive the pin to insert into or disengage from the pin hole provided on the transverse drive mechanism and the mill body (1).

4. The steel ball rolling mill with online quick-change function according to claim 1, characterized in that: The transverse drive mechanism is located between the two slide rails (22).

5. The steel ball rolling mill with online quick-change function according to claim 1, characterized in that: The output shaft of the rotary drive device (5) is arranged parallel to the roll system (12) of the mill body (1) to reduce the deflection angle of the connecting shaft (4).

6. The steel ball rolling mill with online quick-change function according to claim 1, characterized in that: The side pressure mechanism (13) uses a hydraulic motor to drive a worm gear to achieve roll gap adjustment.

7. A quick-change method for a steel ball rolling mill with online quick-change function, characterized in that: Based on the steel ball rolling mill as described in any one of claims 1 to 6, before replacing the rolling mill body, the new rolling mill body is pre-installed and placed on the quick change position of the slide rail. During replacement, the locking mechanism on the working position is first loosened, the connecting shaft bracket (3) lifts the connecting shaft (4) and drives the connecting shaft (4) to disengage from the roll system (12). Then, the old rolling mill body is moved to the empty quick change position through the transverse drive mechanism. After that, the new rolling mill body is moved to the working position and locked by the locking mechanism. The connecting shaft bracket (3) drives the connecting shaft (4) to connect with the roll system (12) of the new rolling mill body. After the connection is completed, the connecting shaft bracket (3) disengages from the connecting shaft (4) to complete the quick machine change.

8. The quick-change method for a steel ball rolling mill with online quick-change function according to claim 7, characterized in that: In the working state, the transverse drive mechanism is connected to the mill body (1), and in the non-working state, the transverse drive mechanism is disconnected from the mill body (1).

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