Middle roll moving and adjusting structure of multi-roll mill

Abstract

The utility model belongs to the technical field of multi-roll mills, and relates to an intermediate roll moving and adjusting structure of a multi-roll mill. The connecting handle mandrel (1) is movably sleeved in the connecting handle shaft sleeve (2), a connecting end (10) of the connecting handle mandrel (1) extends out of one end of the connecting handle shaft sleeve (2), the other end of the connecting handle shaft sleeve (2) is sleeved and connected with the connecting handle connector (3), the connecting handle connector (3) is connected with the telescopic component (11), the telescopic component (11) is arranged on the positioning bracket (12), and the connecting end (10) of the connecting handle mandrel (1) is connected with the middle roller (14). The middle roll moving and adjusting structure of the multi-roll mill is simple in structure, can conveniently and reliably achieve connection of the middle rolls, meets the transverse moving and adjusting requirements of the middle rolls, improves reliability of the middle rolls, prolongs the service life of the middle rolls, guarantees normal production of a production line, improves yield and quality of products, and saves cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-roll rolling mills, and more specifically, relates to a middle roll moving and adjusting structure of a multi-roll rolling mill. Background Art

[0002] The twenty-high rolling mill in the high-precision strip workshop is the main equipment for rolling thin strips. The rolling production speed is generally 200 m / min. During production, a middle roll (one of multiple middle rolls) rotating at high speed drives the corresponding adapter spindle to rotate. The middle roll is connected to the lateral movement adjustment device of the rolling mill middle roll through an adapter. The lateral movement of the middle roll is driven by the lateral movement of the adapter component, and the shape of the rolled strip is adjusted and controlled by the lateral movement of the middle roll. The adapter spindle rotates with the middle roll. In this way, the high-speed rotating adapter spindle mainly bears the pushing and pulling forces of the lateral movement adjustment device. On the one hand, the spindle itself is prone to fracture under stress, resulting in the adapter spindle getting stuck and not rotating, so that production has to be interrupted for maintenance. On the other hand, the connection between the adapter spindle and the adapter bushing and the adapter connecting hand often cannot adapt to the relatively harsh working environment and is prone to falling off or damage. Generally, it needs to be replaced once a month, which greatly affects the normal operation of the production line, leads to the generation of scrap products, and affects the product output and quality.

[0003] In the prior art, there is a technology with the name of "hot-fitted collar type second middle roll of a multi-roll rolling mill" and the publication number of "CN204276522U". This technology discloses a hot-fitted collar type second middle roll of a multi-roll rolling mill, including a second middle spindle, a collar, and an intermediate sleeve; one end of the second middle spindle is provided with a shoulder, the intermediate sleeve is fixedly installed at the other end of the second middle spindle, a plurality of the collars are arranged between the shoulder and the intermediate sleeve, the collars are hot-fitted and connected to the second middle spindle, and the distance between adjacent two collars is 0.1 - 3 mm. The utility model enhances the flexibility of the roll by using a second middle spindle with a smaller diameter and hot-fitting collars with a larger outer diameter, effectively improves the crown adjustment ability during the rolling process, and has the advantages of simple structure and low cost.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the deficiencies of the prior art, to provide a middle roll moving and adjusting structure of a multi-roll rolling mill with a simple structure, which can conveniently and reliably connect the middle roll, meet the requirements of the lateral movement adjustment of the middle roll, improve its own reliability and service life, thus ensuring the normal production of the production line, improving the product output and quality, and saving costs.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0007] The utility model relates to a moving and adjusting structure for an intermediate roll of a multi-roll rolling mill. A coupling mandrel is movably sleeved in a coupling sleeve. The connecting end of the coupling mandrel extends out of one end of the coupling sleeve. The other end of the coupling sleeve is sleeved and connected with a coupling connector. The coupling connector is connected with a telescopic component. The telescopic component is installed on a positioning bracket. The connecting end of the coupling mandrel is connected with the intermediate roll.

[0008] The connecting end is connected with the intermediate roll through a split bushing.

[0009] A first ball bearing and a second ball bearing are arranged between the coupling mandrel and the coupling sleeve. The first ball bearing is located at a position close to one end inside the coupling sleeve, and the second ball bearing is located at a position close to the other end inside the coupling sleeve.

[0010] A sleeve positioning hole is arranged on the coupling sleeve, and a connector positioning hole is arranged on the coupling connector. A positioning pin passes through the sleeve positioning hole and the connector positioning hole.

[0011] The telescopic component is a telescopic oil cylinder or a telescopic air cylinder.

[0012] A limiting boss is arranged on the inner circle of the coupling sleeve. A first plain bearing and a second plain bearing are also arranged between the coupling mandrel and the coupling sleeve.

[0013] The first plain bearing is arranged at a position close to one side of the limiting boss, and the second plain bearing is arranged at a position close to the other side of the limiting boss.

[0014] A first copper bushing is arranged between the first plain bearing and the first ball bearing, and a second copper bushing is arranged between the second plain bearing and the second ball bearing.

[0015] The coupling connector is clamped at the end of the coupling sleeve through a stepped portion.

[0016] Two positioning nuts are screwed on the threaded portion of the coupling mandrel close to one end of the coupling connector. A thrust washer is arranged between the two positioning nuts. An anti-rotation washer is also arranged between one positioning nut and the first copper bushing.

[0017] Adopting the technical solution of the utility model, the working principle and beneficial effects are as follows:

[0018] For the intermediate roll moving and adjusting structure of the multi-roll rolling mill described in the present utility model, the coupling mandrel is movably sleeved in the coupling sleeve, so that the coupling mandrel can rotate relative to the coupling sleeve, but cannot axially move relative to the coupling sleeve. The connecting end of the coupling mandrel extends out of one end of the coupling sleeve for connecting the intermediate roll. The other end of the coupling sleeve is sleeved and connected to the coupling connector. The coupling connector is connected to the telescopic component. The telescopic component is installed on the positioning bracket. When the telescopic component expands and contracts, it drives the coupling connector to axially move (laterally move). The coupling connector drives the coupling sleeve to move laterally. The coupling sleeve transmits the lateral force to the coupling mandrel. The connecting end of the coupling mandrel is connected to the intermediate roll. Then, the lateral movement of the coupling mandrel will drive the intermediate roll to move laterally. The surface of the intermediate roll is a curved surface structure. Then, the lateral movement of the intermediate roll will control the shape of the rolled strip. In the above structure, the coupling mandrel and the coupling sleeve are reliably connected, the coupling connector reliably transmits power, the coupling connector will not rotate, but only move laterally under the control of the telescopic component. The coupling mandrel rotates synchronously with the rotation of the intermediate shaft. And the coupling mandrel and the coupling sleeve can rotate relative to each other flexibly, and the coupling mandrel and the coupling sleeve are ensured not to move axially relative to each other. In this way, on the one hand, it ensures that the rotational force of the coupling mandrel will not be transmitted to the coupling sleeve and the coupling connector. On the other hand, it ensures that the lateral movement force of the coupling connector is reliably transmitted to the coupling mandrel, so as to reliably control the lateral movement of the intermediate shaft. And the coupling sleeve and the coupling mandrel are reliably connected and will not be easily worn or broken due to force. The diameter and thickness of the connecting end of the coupling mandrel meet the requirements and will not be easily broken, improving the reliability and service life of use, meeting the long-term production requirements of the production line, reducing the shutdown problems caused by damage replacement or maintenance, and reducing the problem of product scrapping caused by the damage of the coupling components such as the coupling mandrel, ensuring the production rhythm, and improving the production quantity and quality of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:

[0020] Figure 1 It is a schematic structural diagram of the intermediate roll moving and adjusting structure of the multi-roll rolling mill described in the present utility model;

[0021] The marks in the drawings are respectively: 1, coupling mandrel; 2, coupling sleeve; 3, coupling connector; 4, positioning pin; 5, positioning nut; 6, thrust washer; 7, anti-rotation washer; 8, second copper bushing; 9, second ball bearing; 10, connecting end; 11, telescopic component; 12, positioning bracket; 13, first ball bearing; 14, intermediate roll; 15, first plain bearing; 16, second plain bearing; 17, limiting boss; 18, stepped portion; 19, first copper bushing; 20, third copper bushing; 21, hooked portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes in detail the specific embodiments of the present utility model, such as the shapes, structures of the components involved, the mutual positions and connection relationships between various parts, the functions of each part, and the working principles, etc., with reference to the accompanying drawings and through the description of the embodiments:

[0023] As shown in the appended Figure 1As shown in the figure, the utility model relates to a moving and adjusting structure of an intermediate roll of a multi-roll rolling mill. The adapter spindle 1 is movably sleeved in the adapter sleeve 2. The connecting end 10 of the adapter spindle 1 extends out of one end of the adapter sleeve 2. The other end of the adapter sleeve 2 is sleeved and connected to the adapter connecting head 3. The adapter connecting head 3 is connected to the telescopic member 11. The telescopic member 11 is installed on the positioning bracket 12. The connecting end 10 of the adapter spindle 1 is connected to the intermediate roll 14. For the deficiencies in the prior art, the above structure proposes an improved technical solution. When setting the structure, the adapter spindle 1 is provided. The adapter spindle 1 is movably sleeved in the adapter sleeve 2, so that the adapter spindle 1 can rotate relative to the adapter sleeve 2, but cannot move axially relative to the adapter sleeve 1. The connecting end 10 of the adapter spindle 1 extends out of one end of the adapter sleeve 2 for connecting the intermediate roll. The other end of the adapter sleeve 2 is sleeved and connected to the adapter connecting head 3. The adapter connecting head 3 is connected to the telescopic member 11. The telescopic member 11 is installed on the positioning bracket 12. When the telescopic member 11 expands and contracts, it drives the adapter connecting head 3 to move axially (laterally). The adapter connecting head 3 drives the adapter sleeve 2 to move laterally. The adapter sleeve 2 transmits the lateral force to the adapter spindle 1. The connecting end 10 of the adapter spindle 1 is connected to the intermediate roll 14, so that the lateral movement of the adapter spindle 1 will drive the lateral movement of the intermediate roll 14. The surface of the intermediate roll 14 is a curved surface structure, so the lateral movement of the intermediate roll 14 will control the shape of the rolled strip. In the above structure, the adapter spindle 1 and the adapter sleeve 2 are reliably connected. The adapter connecting head 3 reliably transmits the lateral force. The adapter connecting head 3 will not rotate, but only move laterally under the control of the telescopic member 11. The adapter spindle 1 rotates synchronously with the rotation of the intermediate shaft 14. The adapter spindle 1 and the adapter sleeve 2 can rotate relative to each other flexibly, and the adapter spindle 1 and the adapter sleeve 2 are ensured not to move axially relative to each other. In this way, on the one hand, it is ensured that the rotational force of the adapter spindle 1 will not be transmitted to the adapter sleeve 2 and the adapter connecting head 3. On the other hand, it is ensured that the lateral movement force of the adapter connecting head 3 is reliably transmitted to the adapter spindle 1, so as to reliably and synchronously control the lateral movement of the intermediate shaft 14 through the lateral movement of the adapter spindle. The adapter sleeve 2 and the adapter spindle 1 are reliably connected and will not be easily worn or broken due to force. The diameter and thickness of the connecting end of the adapter spindle 1 meet the requirements and will not be easily broken, improving the use reliability and service life, meeting the long-term production requirements of the production line, reducing the downtime problems caused by damage replacement or maintenance, and reducing the problem of product scrapping caused by the damage of the adapter components such as the adapter spindle, ensuring the production rhythm, and improving the production quantity and quality of the products. The moving and adjusting structure of the intermediate roll of the multi-roll rolling mill described in the utility model has a simple structure, can conveniently and reliably realize the connection of the intermediate roll, meet the requirements of the lateral movement adjustment of the intermediate roll, improve its own reliability and service life, thus ensuring the normal production of the production line, improving the product output and quality, and saving costs.

[0024] The described connecting end 10 is connected to the intermediate roll 14 through a split clamp sleeve. For the above structure, the lateral movement of the intermediate roll is content in the prior art. The improvement of this application does not involve the structure of the intermediate roll and the structure of the lateral movement of the intermediate roll, but only involves the improvement of the adapter component. The connecting end 10 is connected to the intermediate roll 14 through a split clamp sleeve, and the split clamp sleeve is in the prior art.

[0025] A first ball bearing 13 and a second ball bearing 9 are arranged between the adapter mandrel 1 and the adapter sleeve 2. The first ball bearing 13 is located at a position close to one end inside the adapter sleeve 2, and the second ball bearing 9 is located at a position close to the other end inside the adapter sleeve 2. For the above structure, the outer ring of each bearing can be interference-connected with the inner ring of the adapter sleeve, and the inner ring of each bearing is interference-connected with the mandrel, so as to ensure that the adapter mandrel can rotate flexibly relative to the adapter sleeve without lateral movement.

[0026] Bushing positioning holes are provided on the described adapter sleeve 2, and connector positioning holes are provided on the adapter connector 3. A positioning pin 4 passes through the bushing positioning hole and the connector positioning hole. For the above structure, the positioning pin 4 can reliably position the adapter connector and the adapter sleeve, ensuring that the two do not rotate relative to each other and do not move axially. The telescopic component is clamped to the adapter connector through the hook portion 21, and can reliably transmit the lateral movement force to the adapter connector, ensuring that the telescopic component synchronously controls the lateral movement of the adapter connector.

[0027] The described telescopic component 11 is a telescopic oil cylinder or a telescopic air cylinder. For the above structure, the telescopic component can be of various structures, as long as it has a telescopic function, it meets the technical requirements of the application.

[0028] A limiting boss 17 is arranged on the inner ring of the described adapter sleeve 2, and a first plain bearing 15 and a second plain bearing 16 are also arranged between the adapter mandrel 1 and the adapter sleeve 2. For the above structure, the outer ring of each bearing can be interference-connected with the inner ring of the adapter sleeve, and the inner ring of each bearing is interference-connected with the mandrel, so as to ensure that the adapter mandrel can rotate flexibly relative to the adapter sleeve without lateral movement.

[0029] The first plain bearing 15 is arranged at a position close to one side of the limiting boss 17, and the second plain bearing 16 is arranged at a position close to the other side of the limiting boss 17. A first copper bush 19 is arranged between the first plain bearing 15 and the first ball bearing 13, and a second copper bush 8 is arranged between the second plain bearing 16 and the second ball bearing 9. For the above structure, the limiting boss plays a function of axial limiting.

[0030] The described adapter connector 3 is clamped to the end of the adapter sleeve 2 through a stepped portion 18. For the above structure, the adapter connector is reliably clamped, so as to realize the axial limit with the adapter sleeve.

[0031] Two positioning nuts 5 are screwed onto the threaded portion of the adapter core shaft 1 near one end of the adapter connector 3. A thrust washer 6 is disposed between the two positioning nuts 5. An anti-rotation washer 7 is also disposed between one positioning nut 5 and the first copper washer 19. In the above structure, the two positioning nuts, thrust washer 6, and anti-rotation washer 7 all serve as axial limiters, ensuring reliable structural performance.

[0032] The intermediate roller movement and adjustment structure of the multi-roll rolling mill described in the present invention is that the receiving core shaft 1 is movably sleeved in the receiving shaft sleeve 2, so the receiving core shaft 1 can be movably rotated relative to the receiving shaft sleeve 2, but cannot move axially relative to the receiving shaft sleeve 2, and the connecting end 10 of the receiving core shaft 1 extends out of one end of the receiving shaft sleeve 2 for connecting the intermediate roller, and the other end of the receiving shaft sleeve 2 is sleeved and connected to the receiving connector 3, and the receiving connector 3 is connected to the telescopic component 11, and the telescopic component 11 is installed on the positioning bracket 12. When the telescopic component 11 is telescopic, it drives the receiving connector 3 to move axially (laterally), and the receiving connector 3 drives the receiving shaft sleeve 2 to move laterally, and the receiving shaft sleeve 2 transmits the lateral force to the receiving core shaft 1, and the connecting end 10 of the receiving core shaft 1 is connected to the intermediate roller 14, so the lateral movement of the receiving core shaft 1 will drive the intermediate roller 14 to move laterally. The surface of the intermediate roller 14 is a curved structure, so the lateral movement of the intermediate roller 14 will control the plate shape of the rolled strip. In the above structure, the takeover core shaft 1 and the takeover sleeve 2 are reliably connected, the takeover connector 3 can reliably transmit lateral force, the takeover connector 3 will not rotate, but will only move laterally under the control of the telescopic component 11, the takeover core shaft 1 rotates synchronously with the rotation of the intermediate shaft 14, and the takeover core shaft 1 and the takeover sleeve 2 can rotate relatively flexibly, and the takeover core shaft 1 and the takeover sleeve 2 are ensured not to move axially relative to each other. In this way, on the one hand, it is ensured that the rotational force of the takeover core shaft 1 will not be transmitted to the takeover sleeve 2 and the takeover connector 3, and on the other hand, it is ensured that the lateral movement force of the takeover connector 3 is reliably transmitted to the takeover core shaft 1, so that the lateral movement of the intermediate shaft 14 is reliably and synchronously controlled by the lateral movement of the takeover core shaft. The connection between the takeover sleeve 2 and the takeover core shaft 1 is reliable and will not be easily worn or broken due to stress. The diameter and thickness of the connecting end of the takeover core shaft 1 meet the requirements and will not be easily broken, thereby improving the reliability and service life of use, meeting the long-term production needs of the production line, reducing the downtime caused by damage, replacement or repair, and reducing the problem of product scrapping due to damage to the takeover parts such as the takeover core shaft, ensuring the production rhythm, and improving the production quantity and quality of products.

[0033] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A moving and adjusting structure for intermediate rolls of a multi-roll rolling mill, characterized in that: The receiving mandrel (1) is movably sleeved inside the receiving shaft sleeve (2). The connecting end (10) of the receiving mandrel (1) extends out of one end of the receiving shaft sleeve (2). The other end of the receiving shaft sleeve (2) is sleeved and connected to the receiving connector (3). The receiving connector (3) is connected to the telescopic member (11). The telescopic member (11) is installed on the positioning bracket (12). The connecting end (10) of the receiving mandrel (1) is connected to the intermediate roll (14).

2. The intermediate roll moving and adjusting structure of the multi-roll rolling mill according to claim 1, characterized in that: The connecting end (10) is connected to the intermediate roll (14) through a split bushing.

3. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 1 or 2, characterized in that: A first ball bearing (13) and a second ball bearing (9) are arranged between the receiving mandrel (1) and the receiving shaft sleeve (2). The first ball bearing (13) is located at a position close to one end inside the receiving shaft sleeve (2), and the second ball bearing (9) is located at a position close to the other end inside the receiving shaft sleeve (2).

4. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 1 or 2, characterized in that: Bushing positioning holes are provided on the receiving shaft sleeve (2), and connector positioning holes are provided on the receiving connector (3). The positioning pin (4) passes through the bushing positioning holes and the connector positioning holes.

5. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 1 or 2, characterized in that: The telescopic member (11) is a telescopic oil cylinder or a telescopic air cylinder.

6. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 3, characterized in that: A limiting boss (17) is provided on the inner circle of the receiving shaft sleeve (2). A first plain bearing (15) and a second plain bearing (16) are also arranged between the receiving mandrel (1) and the receiving shaft sleeve (2).

7. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 6, characterized in that: The first plain bearing (15) is arranged at a position on one side close to the limiting boss (17), and the second plain bearing (16) is arranged at a position on the other side close to the limiting boss (17).

8. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 7, characterized in that: A first copper bushing (19) is arranged between the first plain bearing (15) and the first ball bearing (13), and a second copper bushing (8) is arranged between the second plain bearing (16) and the second ball bearing (9).

9. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 1 or 2, characterized in that: The receiving connector (3) is clamped on the end of the receiving shaft sleeve (2) through a stepped portion (18).

10. The intermediate roll movement adjustment structure of the multi-roll rolling mill according to claim 1 or 2, characterized in that: Two positioning nuts (5) are screwed on the threaded portion of the receiving mandrel (1) close to one end of the receiving connector (3). A thrust washer (6) is arranged between the two positioning nuts (5). An anti-rotation washer (7) is also arranged between one positioning nut (5) and the first copper bushing (19).

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