Electroplastic plate shape control roller system capable of being independently controlled in transverse partition mode

Abstract

The invention provides an electro-plastic plate shape control roller system capable of being independently controlled in a transverse partition mode, which belongs to the technical field of plate strip rolling equipment and comprises a plate shape control roller mandrel, a conductive copper ring, an insulating ceramic ring, a damping rubber sleeve, an insulating ceramic roller sleeve, a conductive swivel joint and the like. According to the system, the conductive copper rings and the insulating ceramic rings which are alternately arranged form a transverse partition electro-plastic plate shape control roller, the strip is wrapped above the electro-plastic plate shape control roller at a certain wrap angle during working, tight contact of the strip and the conductive copper rings is ensured, and the strip shape control roller is controlled by utilizing the principle that the resistance of the conductive copper rings, the strip and the adjacent conductive copper rings is minimum. The external control circuit is used for controlling the on-off of each group of independent conductive copper rings, so that the electric heating effect is realized at different positions along the width direction of the strip, the plastic state of the strip entering a rolling deformation area is changed, the rolling pressure of the deformation area is influenced, and finally the purpose of online regulation and control of the strip shape is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of plate and strip rolling equipment, and in particular relates to an electro-plastic plate shape control roller system with independent control of transverse partitions. Background Art

[0002] The strip shape is an important indicator of strip quality, and the flatness control is an important aspect of improving the strip shape quality. The local poor strip shape is essentially caused by excessive rolling pressure per unit width at the corresponding position of the rolling deformation zone, which causes the longitudinal extension of the strip to increase, and finally buckles and becomes unstable to produce a wave shape.

[0003] For traditional cold rolling, the main means of plate shape control include roll bending force, intermediate roll shifting, tilting roll, segmented cooling, high tension rolling, etc. However, the effects of roll bending force and shifting roll on plate shape control are mainly reflected in the edge, tilting roll mainly controls the wedge shape of plate shape, segmented cooling mainly controls the high-order wave shape, and it is a near-steady-state control process with poor real-time performance. High tension is conducive to reducing rolling force, and the ability to finely control local plate shape is poor. Therefore, the structure of the rolling mill is certain, and the control domain of conventional plate shape control means is certain, and its scope of action in the width direction of the plate and strip is limited. As plate rolling develops towards extremely thin, extremely hard, and extremely wide, and the center convexity is controlled towards thinning of the edge, complex high-order waves and coupling of flatness and cross-sectional profile control are very likely to occur in the production process, and new plate shape control means are urgently needed.

[0004] The above-mentioned traditional plate shape control methods mainly adjust the rolling pressure in the deformation zone of the strip by changing the transverse stiffness of the roll gap and the longitudinal tensile stress distribution. In fact, in addition to the transverse distribution of the roll gap and the front and rear tensile stresses, the factors that affect the rolling force in the deformation zone also include the plastic characteristic parameters of the strip. By changing the yield stress of the strip in the rolling deformation zone, the formability of the material is also changed, so as to change the distribution of the rolling pressure, thereby achieving plate shape and quality control. In recent years, electroplastic theory and technology have developed rapidly, but the current traditional current loading device cannot achieve accurate and active control of electroplasticity at local positions along the width direction of the strip, and lacks a clear and advanced electronic control system. Summary of the invention

[0005] In order to address the shortcomings and deficiencies of the prior art, a transversely partitioned independently controlled electroplastic plate shape control roller system is provided, thereby solving the problem that the current traditional current loading device cannot achieve accurate and active control of the electroplasticity at local positions along the width direction of the strip, and also lacks an electronic control system.

[0006] A laterally partitioned and independently controlled electroplastic shape control roller system is provided to achieve the purpose of the present invention, comprising a shape control roller core shaft, wherein the two ends of the shape control roller core shaft are respectively inserted into bearing seats for fixation, bearings are arranged between the two ends of the shape control roller core shaft and the bearing seats, conductive rotary joints are respectively sleeved on the outer walls of the two ends of the shape control roller core shaft, a plurality of conductive copper rings are sleeved on the outer wall of the middle part of the shape control roller core shaft, and insulating ceramic rings are arranged between adjacent conductive copper rings to isolate the conductive copper rings, a plurality of channels are opened inside the shape control roller core shaft, insulated wires are arranged in the channels, one end of the insulated wire is connected to the inner wall of the conductive copper ring, and the other end is connected to the conductive rotary joint for current transmission, and the conductive rotary joint is connected to the main circuit and the control circuit for realizing power on and off control of different conductive copper rings.

[0007] As a further improvement of the above solution, an insulating ceramic roller sleeve is arranged between the outer wall of the plate shape control roller core shaft and the inner walls of the conductive copper ring and the insulating ceramic ring to achieve insulation between the plate shape control roller core shaft and the conductive copper ring.

[0008] As a further improvement of the above scheme, a shock-absorbing rubber sleeve is arranged between the outer wall of the plate shape control roller core shaft and the inner wall of the insulating ceramic roller sleeve to achieve shock absorption during the movement of the plate shape control roller core shaft, the conductive copper ring and the insulating ceramic ring.

[0009] As a further improvement of the above solution, the position of the outer wall of the shock-absorbing rubber sleeve and the inner wall of the insulating ceramic roller sleeve is limited by a key.

[0010] As a further improvement of the above scheme, the main circuit includes a power supply, a first multi-way contactor, a second multi-way contactor and a multi-way thermal relay heating coil, the positive pole of the power supply is respectively connected to one end of the first multi-way contactor, the other end of the first multi-way contactor is connected to the conductive rotary joint at one end of the plate shape control roller core shaft, the negative pole of the power supply is connected to one end of the multi-way thermal relay heating coil, the other end of the multi-way thermal relay heating coil is connected to one end of the second multi-way contactor, the other end of the second multi-way contactor is connected to the conductive rotary joint at the other end of the plate shape control roller core shaft, and the conductive rotary joints at both ends of the plate shape control roller core shaft are respectively connected to corresponding conductive copper rings through insulated wires.

[0011] As a further improvement of the above solution, a multi-way fuse is provided on the line connecting the positive electrode of the power supply in the main circuit and the first multi-way contactor to protect the normal operation of the main circuit.

[0012] As a further improvement of the above scheme, the control circuit includes a power supply, a PLC controller, a multi-way contactor control coil, a multi-way thermal relay, an output circuit fuse and an input master command button; the pins X000-X002 of the PLC controller are respectively connected to one end of SB1-SB3 in the input master command button, and the other ends of SB1-SB3 in the input master command button are connected to the pin COM of the PLC controller; the pin COM0 of the PLC controller is connected to one end of the output circuit fuse, and the other end of the output circuit fuse is connected to the positive electrode of the power supply, and the pins Y000-Y00n of the PLC controller are respectively connected to KM1-KM n The pins Y00(n+1)-Y00(2n) of the PLC controller correspond to the KM in the multi-way contactor control coil. 1a -KM na One end of the multi-way contactor control coil KM 1a -KM na The other end corresponds to KH in the multi-way thermal relay 1a -KH na One end of the multi-way contactor control coil is connected to KM1-KM n The other end of the multi-channel thermal relay KH 1a -KH na The other end is connected to the - pole of the power supply.

[0013] As a further improvement of the above solution, the conductive copper ring and the insulating ceramic ring are immersed in an oil medium cooler below for cooling.

[0014] As a further improvement of the above solution, the maximum width of the conductive copper ring and the insulating ceramic ring is one eighth of the width of the strip.

[0015] As a further improvement of the above solution, the power supply is a high-frequency pulse power supply.

[0016] The beneficial effects of the present invention are:

[0017] Compared with the prior art, the present invention provides an electro-plastic plate shape control roller system with independent control of transverse partitions, in which conductive copper rings and insulating ceramic rings are arranged at intervals, and a control circuit is used to change the local plastic state of the strip in the electric heating zone along the transverse structure of the strip, so as to affect the rolling pressure distribution in the deformation zone, and finally achieve the purpose of strip shape control, which makes up for the shortcomings of the existing plate shape control means, is conducive to improving the control ability of the rolling mill for high-order complex plate shapes, and provides technical guarantee for the rolling of ultra-wide, high-strength, ultra-thin and high-quality plates and strips; at the same time, due to the strip The cross section shows a convex distribution at the microscopic level. The system uses an integral roller body composed of segmented conductive copper rings as the basic structure. While ensuring the rigidity of the system, it also applies a certain pressure to the strip, thereby ensuring close contact between the conductive copper rings and the strip during the working process; in addition, the system can be used as a winding guide roller, a tension gauge roller, an inter-frame looper roller, etc. It has a simple structure, reliable electrical control, and fast electric heating speed. It can meet the needs of online rapid regulation of plate shape and can be used for online electroplasticity requirements of high-strength difficult-to-deform metals and near-isothermal rolled strips with a narrow temperature window.

[0018] In summary, this system constructs a transversely partitioned electroplastic shape control roller through alternately arranged conductive copper rings and insulating ceramic rings. When working, the strip is wrapped over the electroplastic shape control roller at a certain wrap angle to ensure close contact between the strip and the conductive copper ring. By using the principle of minimum resistance of conductive copper ring-strip-adjacent conductive copper ring, each group of independent conductive copper rings is controlled to be on and off through an external control circuit, thereby realizing electric heating at different positions along the width direction of the strip, changing the plastic state of the strip entering the rolling deformation zone, affecting the rolling pressure in the deformation zone, and finally achieving the purpose of online shape regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the present invention;

[0020] Figure 2 A top view of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross section of AA;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of the middle circle B;

[0023] Figure 5 It is a structural schematic diagram of the plate shape control roller core shaft and the shock-absorbing rubber sleeve in the present invention;

[0024] Figure 6 A top view of the plate shape control roller core shaft and the shock absorbing rubber sleeve in the present invention;

[0025] Figure 7 for Figure 6Schematic diagram of the cross section of CC;

[0026] Figure 8 is a schematic diagram of a shock-absorbing rubber sleeve in the present invention;

[0027] Fig. 9 is a schematic diagram of the insulating ceramic roller sleeve of the present invention;

[0028] Fig.10 It is a schematic diagram of the main circuit line and hardware connection in the present invention;

[0029] Fig.11 It is a schematic diagram of the control circuit line and hardware connection in the present invention.

[0030] Among them, 1-plate-shaped control roller core shaft; 2-conductive copper ring; 3-insulating ceramic ring; 4-bearing seat; 5-insulated wire; 6-shock-absorbing rubber sleeve; 7-insulating ceramic roller sleeve; 8-power supply; 9-key; 10-conductive rotary joint; 11-channel; 701-multi-way contactor; 702-multi-way fuse; 703-multi-way contactor; 704-multi-way thermal relay heating coil; 901-PLC controller; 902-multi-way contactor control coil; 903-multi-way thermal relay; 904-output circuit fuse; 905-input main command button. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0032] according to Figure 1-Figure 11 As shown, the present invention provides an electroplastic plate shape control roller system with independent control of transverse partitions, including a plate shape control roller core shaft 1, both ends of the plate shape control roller core shaft 1 are respectively inserted into a bearing seat 4 for fixation, bearings are arranged between the two ends of the plate shape control roller core shaft 1 and the bearing seat 4, which are used to improve the smoothness of the plate shape control roller core shaft 1 when rotating, and conductive rotary joints 10 are respectively sleeved on the outer walls of the two ends of the plate shape control roller core shaft 1, and a plurality of conductive copper rings 2 are sleeved on the outer wall of the middle part of the plate shape control roller core shaft 1, and insulating ceramic rings 3 are arranged between adjacent conductive copper rings 2, so as to improve the smoothness of the plate shape control roller core shaft 1 when rotating. The conductive copper ring 2 is isolated, and the maximum width of the conductive copper ring 2 and the insulating ceramic ring 3 is one eighth of the strip width. A plurality of channels 11 are provided inside the plate shape control roller core shaft 1. Insulated wires 5 are provided in the channels 11. One end of the insulating wire 5 is connected to the inner wall of the conductive copper ring 2, and the other end is connected to the conductive rotary joint 10 for current transmission. The conductive rotary joint 10 is connected to the main circuit and the control circuit to realize the on-off control of different conductive copper rings 2. The bottom of the conductive copper ring 2 and the insulating ceramic ring 3 should be immersed in an oil medium cooler for cooling.

[0033] An insulating ceramic roller sleeve 7 is provided between the outer wall of the plate shape control roller mandrel 1 and the inner wall of the conductive copper ring 2 and the insulating ceramic ring 3, for achieving insulation between the plate shape control roller mandrel 1 and the conductive copper ring 2. A shock-absorbing rubber sleeve 6 is provided between the outer wall of the plate shape control roller mandrel 1 and the inner wall of the insulating ceramic roller sleeve 7, for achieving shock absorption during the movement of the plate shape control roller mandrel 1, the conductive copper ring 2 and the insulating ceramic ring 3. The position between the outer wall of the shock-absorbing rubber sleeve 6 and the inner wall of the insulating ceramic roller sleeve 7 is limited by a key 9.

[0034] The main circuit includes a power supply 8, a first multi-way contactor 701, a second multi-way contactor 703 and a multi-way thermal relay heating coil 704. The positive pole of the power supply 8 is respectively connected to one end of the first multi-way contactor 701, and the other end of the first multi-way contactor 701 is connected to the conductive rotary joint 10 at one end of the plate shape control roller core shaft 1. The negative pole of the power supply 8 is connected to one end of the multi-way thermal relay heating coil 704, and the other end of the multi-way thermal relay heating coil 704 is connected to one end of the second multi-way contactor 703, and the other end of the second multi-way contactor 703 is connected to the conductive rotary joint 10 at the other end of the plate shape control roller core shaft 1. The conductive rotary joints 10 at both ends of the plate shape control roller core shaft 1 are respectively connected to the corresponding conductive copper rings 2 through insulated wires 5. A multi-way fuse 702 is provided on the line connecting the positive pole of the power supply 8 in the main circuit with the first multi-way contactor 701 to protect the normal operation of the main circuit. The power supply 8 is a high-frequency pulse power supply, and its controllable parameters include output voltage, output current, pulse frequency, pulse width and duty cycle. When working, the conductive rotary joint 10 at one end of the plate shape control roller core shaft 1 is connected to the positive pole of the power supply 8 through a wire, and the conductive rotary joint 10 at the other end is also connected to the negative pole of the power supply 8 through a wire. The number of branches connecting the conductive rotary joint 10 with the positive and negative poles of the power supply 8 is equal to the number of conductive copper rings 6 in the middle of the plate shape control roller core shaft 1, and each branch is insulated from each other. When working, the control circuit must ensure that the two paths connecting the positive and negative poles of the same conductive copper ring 6 to the power supply 8 cannot be connected at the same time.

[0035] The control circuit includes a power supply 8, a PLC controller 901, a multi-way contactor control coil 902, a multi-way thermal relay 903, an output circuit fuse 904 and an input master command button 905; the pins X000-X002 of the PLC controller 901 are respectively connected to one end of SB1-SB3 in the input master command button 905, and the other ends of SB1-SB3 in the input master command button 905 are connected to the pin COM of the PLC controller 901; the pin COM0 of the PLC controller 901 is connected to one end of the output circuit fuse 904, and the other end of the output circuit fuse 904 is connected to the positive electrode of the power supply 8, and the pins Y000-Y00n of the PLC controller 901 are respectively connected to KM1-KM nThe pins Y00(n+1)-Y00(2n) of the PLC controller 901 correspond to the KM in the multi-way contactor control coil 902. 1a -KM na One end of the multi-way contactor control coil 902 KM 1a -KM na The other end corresponds to KH in multi-way thermal relay 903 1a -KH na One end of the multi-way contactor control coil 902 is connected to KM1-KM n The other end, multi-way thermal relay 903 KH 1a -KH na The other end of each is connected to the - pole of the power supply 8. The power supply 8 is a high-frequency pulse power supply; during operation, the PLC controller 901 logically controls the on-off of the multi-way contactor control coil 902, and then controls the on-off of the power supply 8 and each conductive copper ring 2 circuit through the first contactor 701 and the second contactor 703, and finally realizes the regulation of the electrical plasticity of the strip, and the multi-way thermal relay heating coil 704 in the main circuit affects the on-off of the multi-way thermal relay 903 in the control circuit, and then controls the temperature of each conductive copper ring 2 circuit, and realizes the circuit breaking when the temperature is too high, to prevent the long-term high temperature of the conductive copper ring 2 circuit from burning the circuit and components, and the multi-way fuse 702 in the main circuit prevents the circuit from short-circuiting or seriously overloading, and prevents the instantaneous overcurrent of the conductive copper ring 2 circuit from burning the circuit and components, and the control of the PLC controller 901 ensures the connection between the conductive rotary joint 10 connected to any conductive copper ring 2 and the power supply 8.

[0036] The axial width dimensions of the spaced conductive copper rings 2 and insulating ceramic rings 3 can be arranged evenly or unevenly, but the maximum width is one eighth of the width of the main rolled strip designed for the production line to meet the requirements of plate shape control for more than 4 times.

[0037] Each conductive copper ring 2 can be individually controlled to be powered on and off, and the power supply 8 can perform real-time control of electrical parameters; during operation, the strip is wrapped around the surface of the conductive copper ring 2 that is independently controlled in the lateral partition at a certain wrap angle to ensure good contact between the strip and the surface of the conductive copper ring 2.

[0038] The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments can be combined with each other to form new embodiments. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modification or equivalent replacement that does not deviate from the spirit and scope of the present invention shall be included in the scope of the technical solutions of the present invention.

Claims

1. An electroplastic plate shape control roller system with independent control of lateral partitions, characterized in that: The invention comprises a plate shape control roller core shaft (1), the two ends of the plate shape control roller core shaft (1) are respectively inserted into a bearing seat (4) for fixing, bearings are arranged between the two ends of the plate shape control roller core shaft (1) and the bearing seat (4), conductive rotary joints (10) are respectively sleeved on the outer walls of the two ends of the plate shape control roller core shaft (1), a plurality of conductive copper rings (2) are sleeved on the outer wall of the middle part of the plate shape control roller core shaft (1), and insulating ceramic rings are arranged between adjacent conductive copper rings (2). (3), thereby isolating the conductive copper ring (2), the plate shape control roller core shaft (1) is provided with a plurality of channels (11), each of the channels (11) is provided with an insulated wire (5), one end of the insulated wire (5) is connected to the inner wall of the conductive copper ring (2), and the other end is connected to the conductive rotary joint (10) for current transmission, the conductive rotary joint (10) is connected to the main circuit and the control circuit, and is used to realize the on-off control of different conductive copper rings (2).

2. The electroplastic plate shape control roller system with independent control of lateral partitions according to claim 1 is characterized by: An insulating ceramic roller sleeve (7) is provided between the outer wall of the plate shape control roller core shaft (1) and the inner walls of the conductive copper ring (2) and the insulating ceramic ring (3), and is used to achieve insulation and heat insulation between the plate shape control roller core shaft (1) and the conductive copper ring (2).

3. The electroplastic plate shape control roller system with independent control of lateral partitions according to claim 2 is characterized by: A shock-absorbing rubber sleeve (6) is provided between the outer wall of the plate shape control roller core shaft (1) and the inner wall of the insulating ceramic roller sleeve (7) to achieve shock absorption when the plate shape control roller core shaft (1), the conductive copper ring (2) and the insulating ceramic ring (3) move.

4. The electroplastic shape control roller system with independent control of transverse zones according to claim 3 is characterized in that: The position of the outer wall of the shock-absorbing rubber sleeve (6) and the inner wall of the insulating ceramic roller sleeve (7) is limited by a key (9).

5. The electroplastic shape control roller system with independent control of transverse zones according to claim 4, characterized in that: The main circuit comprises a power supply (8), a first multi-way contactor (701), a second multi-way contactor (703) and a multi-way thermal relay heating coil (704); the positive electrode of the power supply (8) is respectively connected to one end of the first multi-way contactor (701); the other end of the first multi-way contactor (701) is connected to a conductive rotary joint (10) at one end of the plate shape control roller core shaft (1); the negative electrode of the power supply (8) is connected to one end of the multi-way thermal relay heating coil (704); the other end of the multi-way thermal relay heating coil (704) is connected to one end of the second multi-way contactor (703); the other end of the second multi-way contactor (703) is connected to a conductive rotary joint (10) at the other end of the plate shape control roller core shaft (1); and the conductive rotary joints (10) at both ends of the plate shape control roller core shaft (1) are respectively connected to corresponding conductive copper rings (2) through insulated wires (5).

6. An electroplastic shape control roller system with independent control of transverse zones according to any one of claim 5, characterized in that: A multi-way fuse (702) is provided on the line connecting the positive electrode of the power source (8) in the main circuit and the first multi-way contactor (701) to protect the normal operation of the main circuit.

7. An electroplastic shape control roller system with independent control of transverse zones according to any one of claim 6, characterized in that: The control circuit comprises a power supply (8), a PLC controller (901), a multi-way contactor control coil (902), a multi-way thermal relay (903), an output circuit fuse (904) and an input master command button (905); pins X000-X002 of the PLC controller (901) are respectively connected to one end of SB1-SB3 in the input master command button (905), and the other ends of SB1-SB3 in the input master command button (905) are connected to pin COM of the PLC controller (901); pin COM0 of the PLC controller (901) is connected to one end of the output circuit fuse (904), and the other end of the output circuit fuse (904) is connected to the positive electrode of the power supply (8); pins Y000-Y00n of the PLC controller (901) are respectively connected to KM1-KM2 in the multi-way contactor control coil (902). n The pins Y00(n+1)-Y00(2n) of the PLC controller (901) correspond to the KM in the multi-way contactor control coil (902) respectively. 1a -KM na One end of the multi-way contactor control coil (902) is connected to KM 1a -KM na The other end corresponds to KH in the multi-way thermal relay (903) 1a -KH na One end of the multi-way contactor control coil (902) is connected to KM1-KM n The other end of the multi-way thermal relay (903) KH 1a -KH na The other end of each is connected to a - pole of a power source (8).

8. An electroplastic shape control roller system with independent control of transverse zones according to any one of claim 7, characterized in that: The bottom of the conductive copper ring (2) and the insulating ceramic ring (3) should be immersed in an oil medium cooler for temperature reduction and cooling.

9. An electroplastic shape control roller system with independent control of transverse zones according to any one of claim 8, characterized in that: The maximum width of the conductive copper ring (2) and the insulating ceramic ring (3) is one eighth of the width of the strip.

10. An electroplastic shape control roller system with independent control of transverse zones according to any one of claim 9, characterized in that: The power supply (8) is a high-frequency pulse power supply.

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