A method of roll clamping

Abstract

The application discloses a method for clamping a roller, which comprises the following steps: arranging a roller, arranging a strip steel, determining a general position, finding a balance point and clamping; first, arranging a roller set on a frame, then setting the strip steel between an upper brush roller and a lower brush roller, starting the upper brush roller and the lower brush roller to rotate and making them close to the strip steel by lifting, and stopping when the rotating speed suddenly decreases; then starting the upper brush roller and the lower brush roller at the same time, adjusting the height of the two according to the load when they rotate, making the upper brush roller and the lower brush roller reach the balance point, and finally lifting the upper brush roller and the lower brush roller at the same time to press the strip steel and complete clamping; the strip steel is kept stable in the working process by the method, vibration and noise are reduced, and the strip steel is also cleaned more thoroughly by grinding and brushing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal surface treatment, in particular to a method for clamping a pair of rollers. BACKGROUND

[0002] A strip steel often needs to be used after a period of time from being produced, and the strip steel surface will rust due to its own properties during this period, affecting actual use, so the rusted strip steel needs to be treated before being processed into technical products; a common physical rust removal method is to remove rust by brushing the strip steel surface with brushes.

[0003] A machine using such a rust removal method is provided with multiple brushes, including upper brushes on the upper surface of the strip steel and lower brushes on the lower surface of the strip steel, which are arranged in sequence from front to back on the rack, and a brush is arranged at every certain distance on the rack; when the brushes treat the strip steel, the strip steel will vibrate due to the force exerted by the brushes, and then become curved or unstable, so that the work efficiency and cleaning effect of the brush brushing will be greatly affected if the strip steel is in an unstable state or is not flat enough; the existing method for keeping the strip steel stable is to provide a supporting roller with the machine, which can clamp and press the strip steel to offset the force exerted by the brushes on the strip steel, so that the strip steel remains flat and stable, and multiple sets of supporting rollers are provided to keep the overall strip steel on the equipment flat and stable.

[0004] However, the supporting roller needs to be designed and configured according to the specific arrangement of the brushes, and can only be arranged beside the brushes, so that the effect of keeping the strip steel stable by the supporting roller is not satisfactory due to the deviation of the position. SUMMARY

[0005] To solve the above technical problems, the present application provides a method for clamping a pair of rollers, which comprises the following steps: arranging roller components, arranging a strip steel, determining a general position, finding a balance point, and clamping; first, arranging a pair of rollers on the rack, then arranging the strip steel between the upper brushes and the lower brushes, starting the upper brushes and the lower brushes to rotate and make them approach the strip steel by lifting, and stopping when the rotation speed suddenly decreases; then, starting the upper brushes and the lower brushes at the same time, adjusting the height of the upper brushes and the lower brushes according to the load during rotation, so that the upper brushes and the lower brushes reach the balance point, and finally, lifting the upper brushes and the lower brushes at the same time to press the strip steel and complete clamping.

[0006] The technical solution of the present application is as follows:

[0007] A method for clamping a pair of rollers, comprising the following steps:

[0008] S1: arranging roller components: arranging multiple groups of a pair of rollers composed of upper brushes and lower brushes on the rack in sequence from front to back, the upper brushes being above the lower brushes and the upper brushes and the lower brushes being aligned vertically;

[0009] S2 arranging the strip: arranging the strip between the upper brush roll and the lower brush roll;

[0010] S3 determining the approximate position: starting the lower brush roll to rotate, driving the lower brush roll to ascend and slowly approach the strip, stopping the ascending and rotating of the lower brush roll when the rotating speed of the lower brush roll suddenly decreases, at this time the lower brush roll reaches the second height; similarly, starting the upper brush roll to rotate, driving the upper brush roll to descend and slowly approach the strip, stopping the descending and rotating of the upper brush roll when the rotating speed of the upper brush roll suddenly decreases, at this time the upper brush roll reaches the first height;

[0011] S4 finding the balance point: starting the upper brush roll and the lower brush roll to rotate at the same time, real-time detecting the load of the upper brush roll and the lower brush roll when rotating, fine-tuning the height according to the load of the upper brush roll and the lower brush roll, finding the balance point of the upper brush roll and the lower brush roll;

[0012] S5 clamping the strip: after the upper brush roll and the lower brush roll reach the balance point, the upper brush roll descends while the lower brush roll ascends, the strip is pressed by the upper brush roll and the lower brush roll at the same time, and the clamping is completed.

[0013] In the method, the upper brush roll and the lower brush roll form a pair of rolls, instead of the original single upper brush roll or lower brush roll. The upper brush roll and the lower brush roll can simultaneously brush the upper surface and the lower surface of the strip, and the force given to the strip by the upper brush roll and the lower brush roll is offset when working. When the lower brush roll or the upper brush roll touches the strip, the rotating speed of the lower brush roll and the upper brush roll will suddenly decrease, so as to determine whether the upper brush roll and the lower brush roll touch the strip. When the upper brush roll and the lower brush roll touch the strip, the approximate position is reached. At the approximate position, the upper brush roll and the lower brush roll just touch the strip and do not generate unstable brushing force to the strip, so that the strip remains stable in step S3 and does not affect the subsequent steps. The height of the upper brush roll and the lower brush roll is fine-tuned according to the rotating load of the upper brush roll and the lower brush roll, the purpose is to make the upper brush roll and the lower brush roll offset the unstable brushing force when working, and to reach the balance point that meets the effect. Finally, the strip is pressed by the ascending and descending of the upper brush roll and the lower brush roll at the same time, and the upper brush roll and the lower brush roll still remain at the balance point during the process. The balance point is not a specific position, but a relative position relationship that the upper brush roll and the lower brush roll can offset the unstable brushing force when working. The strip remains stable in the working process by this method, which can reduce vibration and noise, and also make the strip be brushed cleaner.

[0014] As a preferred, in step S4, when the upper brush roll and the lower brush roll reach the balance point, the load of the upper brush roll when rotating is equal to the load of the lower brush roll when rotating. In this way, it is determined that the force given to the strip by the upper brush roll and the lower brush roll when rotating can be offset, so as to ensure that the strip can remain stable when working.

[0015] As preferred, in step S3, the up brush roller and the down brush roller are precisely controlled to rise and fall by the motor. Compared with the cylinder and the oil cylinder, the motor is easier to realize precise control, and the up brush roller and the down brush roller need precision.

[0016] As preferred, in step S4, the up brush roller and the down brush roller are driven to rotate by the motor, and the load change when the up brush roller and the down brush roller rotate is reflected by the current change of the motor. Detecting the current change to reflect the load change is intuitive and simple. The load, that is, the actual power of the motor, becomes larger when the current becomes larger, and the load or the power becomes smaller when the current becomes smaller.

[0017] As preferred, in step 1, a plurality of stable roller groups composed of the first roller and the second roller are installed on the rack, and the stable roller groups and the counter roller groups are arranged in sequence and at intervals; in step S2, the first roller is located below the second roller, the strip steel is arranged between the first roller and the second roller, and the strip steel is placed on the first roller. The first roller serves as a reference for placing the strip steel and supports the strip steel before the clamping plate is completed.

[0018] As preferred, in step S5, after the up brush roller and the down brush roller complete the clamping plate, the second roller is controlled to descend and abut against the upper surface of the strip steel. After the second roller abuts against the strip steel, the strip steel can be further kept flat and stable.

[0019] As preferred, in step S3, the up brush roller and the down brush roller rise and fall at a uniform speed. The up brush roller and the down brush roller keep rising and falling at a uniform speed, which is more conducive to control, so as to avoid deviating from the approximate position too much and making it more difficult to find the balance point.

[0020] As preferred, in step S3, the up brush roller and the down brush roller rise and fall in sequence.

[0021] The design starting point, concept and beneficial effects of the present application adopting the above technical scheme are:

[0022] In this method, the upper and lower brush rollers are combined into a pair of rollers, replacing the original single upper or lower brush roller. The upper and lower brush rollers can simultaneously brush the upper and lower surfaces of the strip. During operation, the forces exerted on the strip by the vertically aligned upper and lower brush rollers cancel each other out. When the lower or upper brush roller touches the strip, the rotational speed of the lower and upper brush rollers suddenly decreases, which can be used to determine whether the upper and lower brush rollers have touched the strip. When they touch the strip, they have reached the approximate position. At the approximate position, the upper and lower brush rollers just barely touch the strip and do not generate unstable brushing forces on the strip, keeping the strip stable in step S3 without affecting subsequent steps. The process involves fine-tuning the height of the upper and lower brush rollers based on their rotational load. The aim is to ensure that the upper and lower brush rollers can counteract unstable brushing forces during the brushing process, achieving a balance point that satisfies this effect. Finally, pressure is applied to the strip by simultaneously raising and lowering the upper and lower brush rollers, while maintaining this balance point. This balance point is not a specific location, but rather the relative positional relationship that allows the upper and lower brush rollers to counteract unstable brushing forces during the brushing process. This method maintains the stability of the strip during operation, reducing vibration and noise while also ensuring a cleaner brushing finish. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the rust removal equipment in an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a three-dimensional structural diagram of the rust removal equipment in an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a sectional view of the rust removal equipment in the embodiment of the present invention from the side;

[0026] Figure 4 This is a top-view cross-sectional view of the rust removal equipment in the embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of a single first rust removal unit and a second rust removal unit mounted on a frame in an embodiment of the present invention. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of a single first rust removal unit and a second rust removal unit mounted on a frame in an embodiment of the present invention. Figure 2 ;

[0029] Figure 7 This is a cross-sectional view of a single first rust removal unit and a second rust removal unit mounted on a frame in an embodiment of the present invention. Figure 1 ;

[0030] Figure 8 Side view of the first and second rust removal units in an embodiment of the present invention;

[0031] Figure 9 Perspective view of the upper roller seat in an embodiment of the present invention Figure 1 ;

[0032] Figure 10 Perspective view of the upper roller seat in an embodiment of the present invention Figure 2 ;

[0033] Figure 11 Rear view of the upper roller seat in an embodiment of the present invention;

[0034] Figure 12 Cross-sectional view of the upper roller seat in an embodiment of the present invention;

[0035] Figure 13 Perspective view of the lower roller seat in an embodiment of the present invention Figure 1 ;

[0036] Figure 14 Perspective view of the lower roller seat in an embodiment of the present invention Figure 2 ;

[0037] Figure 15 Rear view of the lower roller seat in an embodiment of the present invention;

[0038] Figure 16 Cross-sectional view of the lower roller seat in an embodiment of the present invention;

[0039] Figure 17 Perspective view of the locking mechanism with the upper piston retracted in an embodiment of the present invention;

[0040] Figure 18 Cross-sectional view of the locking mechanism with the upper piston retracted in an embodiment of the present invention;

[0041] Figure 19 Perspective view of the locking mechanism with the upper piston extended in an embodiment of the present invention;

[0042] Figure 20 Cross-sectional view of the locking mechanism with the upper piston extended in an embodiment of the present invention;

[0043] Figure 21 Perspective view of the piston in an embodiment of the present invention;

[0044] Figure 22 Front view of the piston in an embodiment of the present invention;

[0045] Figure 23A schematic diagram of the stereoscopic structure of the inclined iron in the embodiment of the present application;

[0046] Figure 24 A sectional view of the present application in the embodiment of the single first rust removal unit and the second rust removal unit arranged on the rack Figure 2 ;

[0047] Figure 25 A schematic diagram of the process of the pair of roller clamping plate method in the embodiment of the present application.

[0048] The reference signs are: rack 1; first rust removal unit 2; second rust removal unit 3; strip steel 4; first interval 5; second interval 6; first upper brush roller 7; first lower brush roller 8; second upper brush roller 9; second lower brush roller 10; first roller 11; second roller 12; lifting seat 13; air cylinder 14; upper rail 15; lower rail 16; upper roller seat 17; lower roller seat 18; roller changing part 19; first lifting mechanism 20; moving seat 21; roller 22; locking part 23; locking device 24; base 25; accommodating groove 26; shell 27; oil cylinder 28; inclined iron 29; piston 30; inclined groove 31; avoidance groove 32; spring 33; wheel seat 34; base 35; second lifting mechanism 36. DETAILED DESCRIPTION

[0049] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following further describes the present application with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0050] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0052] The specific embodiments of the present application are as follows:

[0053] As Figure 25 shown, the present application provides a pair of roller clamping plate method, the steps are:

[0054] S1 arranging roller pieces: a plurality of groups of roller pairs composed of upper brush rollers and lower brush rollers are installed on the rack from front to back, the upper brush rollers are above the lower brush rollers, and the upper brush rollers and the lower brush rollers are vertically aligned;

[0055] S2 arranging strip steel: the strip steel is arranged between the upper brush rollers and the lower brush rollers;

[0056] S3 determining the approximate position: start the lower brush roller to rotate, drive the lower brush roller to rise and slowly approach the strip steel, stop the rising and rotating of the lower brush roller when the rotating speed of the lower brush roller suddenly decreases, at this time the lower brush roller reaches the second height; similarly, start the upper brush roller to rotate, drive the upper brush roller to descend and slowly approach the strip steel, stop the descending and rotating of the upper brush roller when the rotating speed of the upper brush roller suddenly decreases, at this time the upper brush roller reaches the first height;

[0057] S4 finding the balance point: start the upper brush roller and the lower brush roller at the same time to rotate, real-time detect the load of the upper brush roller and the lower brush roller when rotating, fine-tune the height according to the load of the two, find the balance point of the upper brush roller and the lower brush roller;

[0058] S5 clamping the plate: after the upper brush roller and the lower brush roller reach the balance point, the upper brush roller descends at the same time the lower brush roller rises, the two simultaneously press the strip steel, and the clamping of the plate is completed.

[0059] In this method, the upper brush roller and the lower brush roller form a pair of rollers, replacing the original single upper brush roller or lower brush roller. The upper brush roller and the lower brush roller can simultaneously brush the upper surface and the lower surface of the strip steel, and when working, the force given to the strip steel by the upper and lower brush rollers in alignment will cancel each other out. When the lower brush roller or the upper brush roller touches the strip steel, the rotating speed of the lower brush roller and the upper brush roller will suddenly decrease, so as to determine whether the upper brush roller and the lower brush roller touch the strip steel. When the two touch the strip steel, they reach the approximate position. At the approximate position, the upper brush roller and the lower brush roller just touch the strip steel and do not produce unstable brushing force to the strip steel, so that the strip steel remains stable in step S3 and does not affect the subsequent steps. The height of the upper brush roller and the lower brush roller is fine-tuned according to the rotating load of the two, the purpose is to make the upper brush roller and the lower brush roller cancel the unstable brushing force when they work, and reach the balance point that meets the effect. Finally, the upper brush roller and the lower brush roller are simultaneously raised and lowered to press the strip steel, and in this process, the upper brush roller and the lower brush roller can still remain at the balance point. The balance point is not a specific position, but a relative position relationship that can make the upper brush roller and the lower brush roller cancel the unstable brushing force when they work. By this method, the strip steel remains stable during work, the stable strip steel can reduce vibration and noise, and the strip steel can also be brushed more cleanly.

[0060] In step S3, the upper and lower brush rollers move up and down at a constant speed, precisely controlled by a motor. Motors offer more precise control than cylinders or hydraulic cylinders, and the lifting and lowering of the upper and lower brush rollers requires high accuracy. In step S4, when the upper and lower brush rollers reach their equilibrium point, the load on the upper brush roller is equal to the load on the lower brush roller. This ensures that the forces exerted on the strip by the upper and lower brush rollers cancel each other out, thus guaranteeing the strip remains stable during operation. In step S4, the motor drives the upper and lower brush rollers to rotate, and the change in motor current reflects the load change during their rotation. Detecting the load change is intuitive and simple; the load is the actual power of the motor. With constant voltage, a larger current indicates a larger load or power, and a smaller current indicates a smaller load.

[0061] This method is applied to a rust removal device, such as Figures 1-4 As shown, the rust removal equipment includes a frame 1, several first rust removal units 2, and several second rust removal units 3. The frame 1 is configured as the main support of the equipment, and a strip of steel 4 to be processed is threaded through the frame 1 from front to back. The first rust removal units 2 are configured to perform rust removal treatment on the first section 5 on the left side of the strip of steel 4 and simultaneously act on the upper and lower surfaces of the strip of steel 4. The second rust removal units 3 are configured to perform rust removal treatment on the second section 6 on the right side of the strip of steel 4 and simultaneously act on the upper and lower surfaces of the strip of steel 4. The working ranges of the first rust removal units 2 and the second rust removal units 3 overlap.

[0062] The overlapping working ranges of the first rust removal unit 2 and the second rust removal unit 3 mean that the strip steel 4 can be divided into three parts along the left-right direction: the left part, the middle part, and the right part. The first interval 5 includes the left part and the middle part, and the second interval 6 includes the right part and the middle part. Therefore, for the middle part, both the first rust removal unit 2 and the second rust removal unit 3 perform rust removal treatment. The advantage of doing this is to prevent obvious dividing lines on the strip steel 4 after grinding. Whether this dividing line is cleaned is also a problem that needs to be considered. Therefore, it is better to increase the working range than to have defects in the processed strip steel 4. It is more troublesome to process the processed strip steel 4 again.

[0063] Furthermore, strip steel 4 comes in various width specifications, and different width strip steel 4 requires brush rollers of corresponding lengths. For wider strip steel 4, such as 1550mm wide strip steel 4, a very long brush roller is often required, that is, a brush roller at least 1550mm long is needed to brush the surface of strip steel 4 in one go. Brush rollers that are too long are disadvantages in terms of structural design, installation, replacement, and working effect. When designing the structure, it is necessary to consider whether such a long brush roller can stably bear the load and drive stably. When installing and replacing, it is necessary to consider the convenience and efficiency of installation and replacement. In addition, it is necessary to consider whether the force exerted on the strip steel 4 at each point of the excessively long brush roller is uniform and consistent, that is, whether the overall brushing effect of the strip steel 4 surface can be guaranteed. All of these are issues that need to be considered.

[0064] Therefore, the first rust removal unit 2 and the second rust removal unit 3 perform zoned brushing on the wide strip steel 4, maintaining an effective cleaning effect within their respective zones. The type of brush roller used in this zoned brushing is called a half roller. Since both the first rust removal unit 2 and the second rust removal unit 3 can act on both the upper and lower surfaces of the strip steel 4 simultaneously, each of the first rust removal unit 2 and the second rust removal unit 3 has two brush rollers, one above and one below, which is called a double roller. This rust removal equipment combines the characteristics of half rollers and double rollers to treat the wide strip steel 4, making the overall structure simple, easier and faster to install and replace, and providing a better brushing and cleaning effect.

[0065] like Figure 3 , 5 As shown in Figures -8 and 24, both the first rust removal unit 2 and the second rust removal unit 3 are mounted on the frame 1, and the number of the first rust removal unit 2 and the second rust removal unit 3 is the same. The first rust removal unit 2 and the second rust removal unit 3 are arranged alternately in the front-to-back direction. The first rust removal unit 2 includes a first upper brush roller 7 and a first lower brush roller 8, and the second rust removal unit 3 includes a second upper brush roller 9 and a second lower brush roller 10. The first upper brush roller 7 and the second upper brush roller 9 are both located above the strip steel 4, and the first lower brush roller 8 and the second upper brush roller 9 are located above the strip steel 4. Both lower brush rollers 10 are located below the strip 4, and the first upper brush roller 7, the first lower brush roller 8, the second upper brush roller 9, and the second lower brush roller 10 can all be raised and lowered on the frame 1. The first upper brush roller 7 and the first lower brush roller 8 together form a brush roller group, and the second upper brush roller 9 and the second lower brush roller 10 also together form a brush roller group. That is, each pair of upper and lower brush rollers forms a brush roller group. Several brush roller groups are spaced apart on the frame 1 in the front-back direction. The brush roller groups brush the surface of the strip 4 and clamp the strip 4.

[0066] In order to stabilize the strip steel 4, the rack 1 is further provided with a plurality of stabilizing roller groups, the plurality of stabilizing roller groups are arranged on the rack 1 in the front-rear direction and are spaced apart from the brush roller groups; the stabilizing roller group comprises a first roller 11 and a second roller 12, the first roller 11 and the second roller 12 are respectively located on the upper and lower sides of the strip steel 4, one of the first roller 11 or the second roller 12 is arranged on the rack 1 in a lifting manner, and when the first roller 11 and the second roller 12 are both abutted on the strip steel 4, the first roller 11 and the second roller 12 jointly form a stabilizing structure, and the strip steel 4 is located between the stabilizing structures.

[0067] As shown in Figure 3 , 24 , in a single stabilizing roller group, the number of the first roller 11 and the second roller 12 is three, so in the device, the shape of the stabilizing structure has two kinds, which are respectively a regular triangle and an inverted triangle, the stabilizing roller group with the regular triangle stabilizing structure and the stabilizing roller group with the inverted triangle stabilizing structure are alternately arranged on the rack 1, that is, two kinds of stabilizing roller groups with different shapes are arranged on both sides of each brush roller group.

[0068] The rack 1 is provided with a plurality of lifting seats 13, the number of the lifting seats 13 is the same as the number of the stabilizing roller groups, the lifting seats 13 are arranged on the rack 1 in a lifting manner and the lifting seats 13 are located above the strip steel 4, the second roller 12 is arranged on the lifting seat 13, the first roller 11 is located below the strip steel 4 and is fixedly arranged on the rack 1, the second roller 12 is located above the strip steel 4 and is arranged on the rack 1 in a lifting manner through the lifting seat 13; the rack 1 is provided with a plurality of air cylinders 14, the number of the air cylinders 14 is the same as the number of the lifting seats 13, the lifting seats 13 are arranged on the rack 1 in a lifting manner through the air cylinders 14, and the air cylinders 14 can control the lifting of the lifting seats 13; the stabilizing roller group with the regular triangle stabilizing structure has two first rollers 11 and one second roller 12, the stabilizing roller group with the inverted triangle stabilizing structure has one first roller 11 and two second rollers 12, and the two second rollers 12 are jointly arranged on one lifting seat 13; after the strip steel 4 is placed on the first roller 11, the first upper brush roller 7, the first lower brush roller 8, the second upper brush roller 9 and the second lower brush roller 10 are lifted, close to and clamp the strip steel 4, and then the second roller 12 is lifted and abutted on the upper surface of the strip steel 4; in the device, a half-roller-to-roller form is used, and the stabilizing roller group is only used to keep the strip steel 4 stable and flat, and does not need to be pressurized like the traditional pressure roller to resist the force of the brush roller.

[0069] The rack 1 further comprises a plurality of upper tracks 15 and a plurality of lower tracks 16, the number of the upper tracks 15 and the lower tracks 16 is same as the sum of the number of the first rust removal units 2 and the second rust removal units 3, the upper tracks 15 and the lower tracks 16 extend to the left and right sides of the rack 1 respectively, the extending direction of the upper tracks 15 is opposite to the extending direction of the lower tracks 16, and the upper tracks 15 and the lower tracks 16 do not interfere with each other; the upper tracks 15 are located at the top of the rack 1, and the lower tracks 16 are located at the lower part of the rack 1; the first upper brush roller 7 and the second upper brush roller 9 are arranged on an upper roller seat 17 respectively, the first upper brush roller 7 and the second upper brush roller 9 are installed on the lower part of the upper roller seat 17, the upper roller seat 17 is selectively movably arranged on the upper track 15, the first lower brush roller 8 and the second lower brush roller 10 are arranged on a lower roller seat 18 respectively, the first lower brush roller 8 and the second lower brush roller 10 are installed on the upper part of the lower roller seat 18, and the lower roller seat 18 is selectively movably arranged on the lower track 16; the partition of the first rust removal units 2 and the second rust removal units 3 is realized by the position of the roller seat on the track, that is, the upper roller seat 17 carrying the first upper brush roller 7 stays at a position more to the left on the upper track 15 relative to the upper roller seat 17 carrying the second upper brush roller 9, and the lower roller seat 18 carrying the first lower brush roller 8 is aligned with the upper roller seat 17 carrying the first upper brush roller 7 in the left-right direction, and the lower roller seat 18 carrying the second lower brush roller 10 is aligned with the upper roller seat 17 carrying the second upper brush roller 9 in the left-right direction.

[0070] The upper tracks 15 and the lower tracks 16 all extend outward from the rack 1 to have a roller changing part 19, when the upper roller seat 17 and the lower roller seat 18 move to the roller changing part 19, the worn brush rollers can be replaced; the upper roller seat 17 is suspended downward on the upper track 15, and the lower roller seat 18 is above the lower track 16, when changing the roller, since the extending direction of the upper track 15 is opposite to the extending direction of the lower track 16, the upper brush roller and the lower brush roller do not interfere with each other when changing the roller, and since the upper roller seat 17 is suspended downward on the upper track 15 and the lower roller seat 18 is above the lower track 16, the upper brush roller and the lower brush roller can be at positions convenient for roller changing work; the upper roller seat 17 is lifted and arranged on a moving seat 21 by a first lifting mechanism 20, the moving seat 21 is provided with a roller 22, the roller 22 is arranged on the upper track 15, so that the moving seat 21 can drive the upper roller seat 17 to move on the upper track 15; the lower roller seat 18 is provided with a roller 22, the roller 22 is arranged on the lower track 16, so that the lower roller seat 18 can move on the lower track 16.

[0071] As Figures 9-12,24, the mobile seat 21 is further provided with locking portions 23, the two locking portions 23 are symmetrically arranged on the mobile seat 21 and protrude from the mobile seat 21; the locking device 24 is arranged on both sides of the upper track 15, the locking device 24 comprises a base 25 and a locking mechanism, the locking mechanism is arranged on the base 25, the base 25 is provided with a receiving groove 26 corresponding to the locking portion 23, and the locking portion 23 is locked by the locking mechanism after entering the receiving groove 26; each base 25 is provided with two sets of locking mechanisms, and the locking mechanism is located above the receiving groove 26, specifically, as shown in Figures 17-23 , the locking mechanism comprises a housing 27, an oil cylinder 28, an inclined iron 29 and a piston 30, the oil cylinder 28 is arranged outside the housing 27 and connected with the inclined iron 29, the inclined iron 29 is horizontally arranged in the housing 27 and driven by the oil cylinder 28 to move in the housing 27, and the piston 30 is vertically arranged in the housing 27 and extends and retracts under the action of the inclined iron 29; further, the piston 30 is provided with inclined grooves 31 on both sides, the inclined iron 29 is provided with an avoiding groove 32 in the middle, the inclined iron 29 enters the inclined groove 31 of the piston 30, and the piston 30 enters the inclined avoiding groove 32; the piston 30 is further sleeved with a spring 33, the spring 33 acts on the piston 30 and gives the piston 30 an upward elastic force, so that the inclined iron 29 cooperates with the inclined surface of the piston 30, and when the inclined iron 29 moves, the piston 30 rises and falls.

[0072] The roller 22 is arranged on the wheel seat 34, and the oil cylinder 28 is arranged between the wheel seat 34 and the mobile seat 21, and the roller 22 can be driven to rise and fall by the oil cylinder 28; when the locking portion 23 enters the receiving groove 26 and the upper roller seat 17 reaches the working position, the wheel seat 34 rises, the mobile seat 21 descends until the locking portion 23 is clamped in the receiving groove 26, and the wheel seat 34 continues to rise to make the roller 22 separate from the upper track 15, at this time, the piston 30 is retracted in the housing 27; then the inclined iron 29 moves to make the piston 30 extend out of the housing 27 until the locking portion 23 is pressed in the receiving groove 26; after the locking of the mobile seat 21 is completed, the upper roller seat 17 and the upper brush roller are driven to rise and fall by the first lifting mechanism 20; each side of the mobile seat 21 is provided with two locking mechanisms, and a single mobile seat 21 is locked by four locking mechanisms, which is more stable.

[0073] Similarly, as shown in Figures 13-16As shown, the base 35 is connected below the lower roller seat 18, and the two are connected through the second lifting mechanism 36 to realize the lifting of the first lower brush roller 8 and the second lower brush roller 10. The locking device 24 is also arranged at the bottom of the frame 1 and is located below the lower rail 16. The front and rear sides of the base 35 are also provided with locking portions 23 correspondingly. The oil cylinder 28 is further arranged between the base 35 and the lower roller seat 18. When the lower roller seat 18 moves on the lower rail 16, the oil cylinder 28 lifts the base 35. When the locking portions 23 enter the accommodating grooves 26 and the lower roller seat 18 reaches its working position, the base 35 is lowered and the locking portions 23 are rested in the accommodating grooves 26, and the rollers 22 are away from the lower rail 16. Then the base 35 is locked by the locking mechanism. After the base 35 is locked, the lifting of the lower roller seat 18 and the lower brush roller can be controlled through the second lifting mechanism 36. The first lifting mechanism 20 and the second lifting mechanism 36 are both driven to lift by the servo motor, which is relatively conventional and will not be described here. The advantage is that the lifting is more accurate and fast.

Claims

1. A method for clamping rollers, characterized in that, The steps are as follows: S1 Roller Arrangement: Multiple sets of roller pairs consisting of upper and lower brush rollers are installed on the frame from front to back, with the upper brush roller located above the lower brush roller and the upper and lower brush rollers aligned vertically. S2 strip arrangement: The strip is arranged between the upper brush roller and the lower brush roller; S3 determines the approximate position: Start the lower brush roller to rotate, drive the lower brush roller to rise and slowly approach the strip. When the speed of the lower brush roller suddenly drops, stop the rise and rotation of the lower brush roller. At this time, the lower brush roller reaches the second height. Similarly, start the upper brush roller to rotate, drive the upper brush roller to descend and slowly approach the strip. When the speed of the upper brush roller suddenly drops, stop the descent and rotation of the upper brush roller. At this time, the upper brush roller reaches the first height. The upper and lower brush rollers rise and fall in sequence, and the rise and fall of the upper and lower brush rollers are both uniform motions. S4 Find the balance point: Start the upper and lower brush rollers simultaneously to make them rotate. Detect the load on the upper and lower brush rollers in real time and fine-tune the height according to the load to find the balance point between the upper and lower brush rollers. S5 clamping plate: After the upper brush roller and the lower brush roller reach the balance point, the upper brush roller descends while the lower brush roller rises, and the two simultaneously apply pressure to the strip steel to complete the clamping.

2. The roller clamping method according to claim 1, characterized in that: In step S4, when the upper brush roller and the lower brush roller reach the equilibrium point, the load on the upper brush roller when it rotates is equal to the load on the lower brush roller when it rotates.

3. The roller clamping method according to claim 1, characterized in that: In step S3, the raising and lowering of the upper and lower brush rollers are precisely controlled by a motor.

4. The roller clamping method according to claim 1, characterized in that: In step S4, the upper and lower brush rollers are driven to rotate by the motor, and the load change of the upper and lower brush rollers during rotation is reflected by the change of the motor current.

5. The roller clamping method according to claim 1, characterized in that: In step S1, multiple sets of stabilizing roller groups consisting of a first roller and a second roller are installed on the frame, and the stabilizing roller groups and the counter-roller groups are arranged in sequence at intervals; in step S2, the first roller is positioned below the second roller, and the strip is also placed between the first roller and the second roller, and the strip is placed on the first roller.

6. The roller clamping method according to claim 5, characterized in that: In step S5, after the upper and lower brush rollers complete the clamping, the second roller is controlled to descend and abut against the upper surface of the strip.

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