A quick roll changing device for roll system of stainless steel coil rolling mill

Abstract

The utility model belongs to stainless steel plate rolling mill maintenance technical field especially a kind of roll system quick roll changing device of stainless steel coiled plate rolling mill, in view of the problem that the existing hook type fixture is rigidly collided with roll system group under shaking working condition and hook type fixture opening and closing time is long, present and propose following scheme, including two roll system groups and the clamping block fixedly connected in the one side of roll system group, AGV trolley is located rolling mill side, hydraulic cylinder I is fixedly connected on the fixed platform of rolling mill side, the piston rod end of hydraulic cylinder I is fixedly connected with clamp, clamp is used to clamp roll system group, in the utility model, clamp is through the linkage structure of hydraulic cylinder III, reciprocating sliding block and connecting rod, the synchronous quick opening and closing of clamping jaw are realized, in addition, the rubber layer that arc clamping piece outside covers and the rubber shock pad on guide base form double buffering structure, avoid the shaking in the process of moving, improve the transfer speed of roll system group on guide rail II, improve roll changing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel plate rolling mill maintenance technology, and in particular to a quick roll changing device for a stainless steel coil rolling mill. Background Technology

[0002] In the production of stainless steel coils, the rolling mill's roll system is the core component directly involved in the rolling process. Its performance and condition directly affect the surface quality, dimensional accuracy, and mechanical properties of the stainless steel sheet. With the continuous expansion of stainless steel product applications, market demands for quality are increasing. This necessitates that the rolling mill roll system be able to be replaced quickly and accurately when a certain rolling volume is reached or when wear or fatigue occurs, in order to reduce downtime and ensure the continuity and stability of production. Even with the gradual introduction of mechanized roll changing equipment, existing systems still have significant shortcomings:

[0003] Traditional sliding guides are prone to wear during repeated roller changes, resulting in a decrease in positioning accuracy. While rolling guides reduce friction, the roller assembly is prone to abnormal vibration during movement. The current hook-type fixing clamps rigidly collide with the roller assembly under vibration conditions, forcing a reduction in movement speed to ensure safety, which fails to achieve a breakthrough in efficiency.

[0004] The existing hook-type fixing fixture requires the "hooking-locking-calibration" action to be completed in steps, which takes a long time. In addition, it is prone to positioning deviation when the roller system vibrates, requiring additional manual adjustment, which prolongs the roller system replacement time and affects the work efficiency of roller system replacement.

[0005] Therefore, a quick roll changing device for the roll system of a stainless steel coil rolling mill is proposed. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the rigid collision between the hook-type fixing clamp and the roll system under vibration conditions, and the long opening, closing, and positioning time of the hook-type fixing clamp. Therefore, this invention proposes a quick roll changing device for the roll system of a stainless steel coil rolling mill.

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

[0008] A quick roll changing device for a stainless steel coil rolling mill includes two sets of roll sets and a clamping block fixedly connected to one side of the roll sets.

[0009] The AGV trolley is located on one side of the rolling mill;

[0010] Hydraulic cylinder I is fixedly connected to a fixed platform on one side of the rolling mill. A clamp is fixedly connected to the end of the piston rod of hydraulic cylinder I. The clamp is used to hold the roll assembly.

[0011] The fixture includes a connector, a reciprocating slider, multiple connecting rods, a hydraulic cylinder III, multiple grippers, and a guide base. One side of the connector is fixedly connected to the end of the piston rod of the hydraulic cylinder I, and the other side is fixedly connected to the cylinder body of the hydraulic cylinder III. The end of the piston rod of the hydraulic cylinder III is fixedly connected to the reciprocating slider. The reciprocating slider and the multiple grippers are rotatably connected through connecting rods. The cylinder body of the hydraulic cylinder III is fixedly connected to the guide base. The multiple grippers are slidably connected to the surface of the guide base. The gripping side of the multiple grippers is provided with an arc-shaped gripping piece that cooperates with the gripping block. The distance between the gripping piece and the side of the guide base that are close to each other is matched with the step thickness of the gripping block.

[0012] The translation mechanism, located on top of the AGV trolley, is used for translating and switching the roller system.

[0013] In one possible design, the translation mechanism includes a guide rail I fixedly connected to the top of the AGV trolley, a support plate slidably connected to the top of the guide rail I, a support base fixedly connected to one side of the AGV trolley, a hydraulic cylinder II fixedly connected to the top of the support base, and the piston rod end of the hydraulic cylinder II fixedly connected to the support plate.

[0014] In one possible design, the translation mechanism includes a guide rail I fixedly connected to the top of the AGV trolley, a support plate slidably connected to the top of the guide rail I, and a hydraulic cylinder II fixedly connected to one end of the AGV trolley, with the piston rod end of the hydraulic cylinder II fixedly connected to the support plate.

[0015] In one possible design, the outer side of the curved clamping piece is covered with a rubber layer.

[0016] In one possible design, a rubber shock-absorbing pad is fixedly connected to the side of the guide base near the gripper.

[0017] In one possible design, two sets of guide rails II are fixedly connected to the top of the support plate, and the guide rails II slide in engagement with the bottom of the roller system.

[0018] In one possible design, multiple rollers are fixedly connected to the bottom of guide rail II.

[0019] In this application:

[0020] The device includes a new roll assembly and a replaced old roll assembly. Each roll assembly has a clamping block fixedly connected to one side to provide a reliable clamping point for the fixture. The AGV trolley serves as a mobile carrying platform and is pre-positioned on the ground on one side of the rolling mill to carry the new roll assembly to be replaced and the replaced old roll assembly.

[0021] When a roll change is required, hydraulic cylinder I, fixed on a platform on one side of the mill, is activated. Its piston rod extends and pushes the entire fixture closer to the clamping block of the roll assembly. Hydraulic cylinder III in the fixture acts as the drive source, and its piston rod extends and retracts, driving the reciprocating slider to move linearly. The reciprocating slider drives multiple jaws to slide on the surface of the guide base synchronously through multiple connecting rods. At this time, the T-shaped groove on the side of the jaws near the guide base slides and engages with the T-shaped guide rail on the guide base, providing precise guidance for the movement of the jaws and ensuring that multiple jaws open and close synchronously. The arc-shaped clamping piece on the clamping side of the jaws matches the outer contour of the clamping block, and the distance between the clamping piece on the side of the clamping piece near the guide base and the surface of the guide base matches the step size clearance of the clamping block, which can achieve precise engagement of the clamping block and avoid shaking during the clamping process. Meanwhile, the rubber layer covering the outer side of the arc-shaped clamping piece can increase friction, further improve clamping stability, and also buffer the impact force during clamping to prevent damage to the clamping block. The rubber shock-absorbing pad on the guide base near the jaw can absorb the vibration when the jaw closes, ensuring the smoothness of the clamping action.

[0022] After the grippers firmly hold the clamping block of the old roll assembly, the piston rod of hydraulic cylinder I retracts, pulling the old roll assembly out of the mill. The two sets of guide rails II at the top of the support plate slide against the bottom of the roll assembly, and the multiple rollers at the bottom of the guide rails II significantly reduce the resistance of the roll assembly during the transfer process through rolling friction, ensuring that the roll assembly can move smoothly and quickly and be placed on the support plate of the AGV trolley. At this time, hydraulic cylinder III in the fixture drives the opening of the fixture and retracts to the initial position. The translation mechanism then drives the support plate to move, transferring the new roll assembly to the roll changing position. The fixture repeats the clamping action, and the piston rod of hydraulic cylinder I extends to send the new roll assembly into the installation position in the mill. Hydraulic cylinder III in the fixture drives the opening of the fixture and retracts to the initial position, completing the entire roll changing process.

[0023] Beneficial effects: In this utility model, the quick roll changing device for a stainless steel coil rolling mill, through the coordinated use of components such as clamps, reciprocating sliders, connecting rods, and grippers, achieves precise matching between the arc-shaped clamping plates of the grippers and the outer contour of the clamping blocks, and the gap between the clamping plates and the guide base matches the step size clearance of the clamping blocks, thus realizing the "biting" fixation of the roll system. In addition, the rubber layer covering the outer side of the arc-shaped clamping plates and the rubber shock-absorbing pads on the guide base form a double buffer structure, which can absorb the impact force during the transfer process, avoid the shaking during the transfer process, and enhance the clamping stability. The rolling friction design of the bottom roller of the linkage guide rail II significantly reduces the transfer resistance of the roll system, increases the transfer speed of the roll system group on the guide rail II, and improves the roll changing efficiency.

[0024] In this utility model, the roller system quick roll changing device of the stainless steel coil rolling mill, through the coordinated use of components such as connecting rod, gripper, guide base, and clamping plate, the clamp achieves synchronous and rapid opening and closing of the gripper through the linkage structure of hydraulic cylinder III, reciprocating slider and connecting rod, thus shortening the single clamping action time of the clamp.

[0025] In this invention, the clamp achieves synchronous and rapid opening and closing of the grippers through the linkage structure of hydraulic cylinder III, reciprocating slider and connecting rod. In addition, the rubber layer covering the outer side of the arc-shaped clamping piece and the rubber shock-absorbing pad on the guide base form a double buffer structure, which avoids shaking during the transfer process, improves the transfer speed of the roller system on guide rail II, and improves the roller changing efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the transfer of the old roll system group in a rapid roll changing device for a stainless steel coil rolling mill, as proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the transfer structure of a new roll system group for a rapid roll change device for a stainless steel coil rolling mill proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the clamping mechanism of a quick roll changing device for a stainless steel coil rolling mill proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the clamping mechanism of a quick roll changing device for a stainless steel coil rolling mill, as proposed in this utility model.

[0030] In the diagram: 1. Hydraulic cylinder I; 2. AGV trolley; 3. Hydraulic cylinder II; 4. Guide rail I; 5. Support plate; 6. Guide rail II; 7. Roller; 8. Fixture; 81. Connector; 82. Reciprocating slider; 83. Connecting rod; 84. Hydraulic cylinder III; 85. Gripper; 851. T-groove; 852. Clamping piece; 86. Guide base; 861. T-shaped guide rail; 862. Rubber shock-absorbing pad; 9. Roller assembly; 901. Clamping block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] In one implementation case, refer to Figures 1-4 A quick roll changing device for a rolling mill includes: two sets of roll sets 9 and a clamping block 901 fixedly connected to one side of the roll set 9;

[0033] In this implementation case, the AGV trolley 2 is located on one side of the rolling mill. The AGV trolley 2 serves as a mobile carrying platform to carry the new and old roll groups 9 to complete the roll change and improve the turnover efficiency. The AGV trolley 2 is equipped with a hydraulic station (not shown in the figure), which is existing technology and will not be described in detail here.

[0034] In particular, the hydraulic cylinder I1 is fixedly connected to a fixed platform on one side of the rolling mill, and the piston rod end of the hydraulic cylinder I1 is fixedly connected to a clamp 8, which is used to clamp the roll assembly 9.

[0035] In addition, the clamp 8 includes a connector 81, a reciprocating slider 82, multiple connecting rods 83, a hydraulic cylinder III 84, multiple grippers 85, and a guide base 86. One side of the connector 81 is fixedly connected to the piston rod end of the hydraulic cylinder I1, and the other side is fixedly connected to the cylinder body of the hydraulic cylinder III 84. The piston rod end of the hydraulic cylinder III 84 is fixedly connected to the reciprocating slider 82. The reciprocating slider 82 and the multiple grippers 85 are rotatably connected through the connecting rods 83. The cylinder body of the hydraulic cylinder III 84 is fixedly connected to the guide base 86. The multiple grippers 85 are slidably connected to the surface of the guide base 86. The gripping side of the multiple grippers 85 is provided with an arc-shaped gripping piece 852 that cooperates with the gripping block 901. The distance between the gripping piece 852 and the guide base 86 on the side closest to each other is in clearance fit with the step thickness of the gripping block 901.

[0036] The translation mechanism is located on the top of the AGV trolley 2 and is used to translate and switch the roller system 9.

[0037] It should be noted that the translation mechanism includes a guide rail I4 fixedly connected to the top of the AGV trolley 2, a support plate 5 slidably connected to the top of the guide rail I4, a support base fixedly connected to one side of the AGV trolley 2, a hydraulic cylinder II3 fixedly connected to the top of the support base, and the piston rod end of the hydraulic cylinder II3 fixedly connected to the support plate 5.

[0038] This application can be used in the field of stainless steel plate rolling mill maintenance technology, and can also be used in other fields applicable to this application.

[0039] In another implementation case, refer to Figures 1-4 A quick roll changing device for a stainless steel coil rolling mill is applied to the field of stainless steel plate rolling mill maintenance technology. Multiple grippers 85 are provided with T-shaped grooves 851 on the side near the guide base 86. Multiple T-shaped guide rails 861 are provided on the side of the guide base 86 near the grippers 85. The T-shaped guide rails 861 slide with the T-shaped grooves 851 to ensure the consistency of the movement trajectory of each gripper 85 during the clamping process and reduce the clamping coaxiality error.

[0040] In this embodiment, the outer side of the arc-shaped clamping piece 852 is covered with a rubber layer, which can absorb the clamping impact force, protect the surface of the clamping block 901 from indentation, and improve clamping stability.

[0041] In particular, a rubber damping pad 862 is fixedly connected to the side of the guide base 86 near the gripper 85 to buffer clamping vibration and improve clamping stability.

[0042] In addition, two sets of guide rails II6 are fixedly connected to the top of the support plate 5, and the guide rails II6 slide in cooperation with the bottom of the roller system 9.

[0043] It should be noted that multiple rollers 7 are fixedly connected to the bottom of each guide rail II6, which reduces the moving resistance of the roller system 9 on the guide rail II6, reduces the wear between the roller system 9 and the guide rail II6, and improves the service life of the guide rail II6.

[0044] However, as is well known to those skilled in the art, the working principles and wiring methods of hydraulic cylinder I1, AGV trolley 2, hydraulic cylinder II3 and hydraulic cylinder III84 are all conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0045] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick roll changing device for a stainless steel coil rolling mill, characterized in that: It includes two sets of roller groups (9) and a clamping block (901) fixedly connected to one side of the roller group (9); AGV trolley (2) is located on one side of the rolling mill; Hydraulic cylinder I (1) is fixedly connected to a fixed platform on one side of the rolling mill. The piston rod end of hydraulic cylinder I (1) is fixedly connected to a clamp (8), which is used to clamp the roll assembly (9). The fixture (8) includes a connector (81), a reciprocating slider (82), multiple connecting rods (83), a hydraulic cylinder III (84), multiple grippers (85), and a guide base (86). One side of the connector (81) is fixedly connected to the piston rod end of the hydraulic cylinder I (1), and the other side is fixedly connected to the cylinder body of the hydraulic cylinder III (84). The piston rod end of the hydraulic cylinder III (84) is fixedly connected to the reciprocating slider (82), and the reciprocating slider (82) is connected to the multiple grippers. (85) are all rotatably connected by connecting rod (83). The cylinder body of hydraulic cylinder III (84) is fixedly connected to guide base (86). Multiple grippers (85) are slidably connected to the surface of guide base (86). The gripping side of multiple grippers (85) is provided with arc-shaped gripping piece (852) that cooperates with gripping block (901). The distance between the gripping piece (852) and the guide base (86) on the side that are close to each other is matched with the step thickness of gripping block (901). The translation mechanism is located on the top of the AGV trolley (2) and is used to translate the switching roller system (9).

2. The quick roll changing device for a stainless steel coil rolling mill according to claim 1, characterized in that, The translation mechanism includes a guide rail I (4) fixedly connected to the top of the AGV trolley (2), a support plate (5) slidably connected to the top of the guide rail I (4), a support base fixedly connected to one side of the AGV trolley (2), a hydraulic cylinder II (3) fixedly connected to the top of the support base, and the piston rod end of the hydraulic cylinder II (3) fixedly connected to the support plate (5).

3. The quick roll changing device for a stainless steel coil rolling mill according to claim 1, characterized in that, Each of the multiple grippers (85) has a T-shaped groove (851) on the side near the guide base (86), and the guide base (86) has multiple T-shaped guide rails (861) on the side near the grippers (85). The T-shaped guide rails (861) and the T-shaped grooves (851) slide together.

4. The quick roll changing device for a stainless steel coil rolling mill according to claim 1, characterized in that, The outer side of the arc-shaped clamping piece (852) is covered with a rubber layer.

5. A quick roll changing device for a stainless steel coil rolling mill according to claim 1, characterized in that, A rubber shock-absorbing pad (862) is fixedly connected to the side of the guide base (86) near the gripper (85).

6. A quick roll changing device for a stainless steel coil rolling mill according to claim 2, characterized in that, The top of the support plate (5) is fixedly connected to two sets of guide rails II (6), and the guide rails II (6) slide in cooperation with the bottom of the roller system (9).

7. A quick roll changing device for a stainless steel coil rolling mill according to claim 6, characterized in that, The bottom of each guide rail II (6) is fixedly connected to multiple rollers (7).

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