Strip centering device

Abstract

The utility model discloses a strip centering device which comprises a fixed rack, a rotary pin shaft, a movable rack, deviation rectifying rollers and an acting cylinder, the fixed rack is of a welding frame structure, the top of the fixed rack is connected with the movable rack through the rotary pin shaft, the two deviation rectifying rollers are horizontally arranged on the movable rack in parallel, and the acting cylinder is arranged on the movable rack. The movable rack is connected with the end of a piston rod of the acting cylinder, and the root of the acting cylinder is hinged to the bottom of the fixed rack. And a strip to be rectified sequentially passes through the upper and lower rectifying rollers in an S-shaped manner. According to the strip centering device, the two deviation rectifying rollers are arranged on the movable rack in parallel, deviation rectifying is achieved in a two-roller linkage mode, and operation is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of strip conveying, in particular to a strip centering device. Background Art

[0002] During the production process of metal strips, conveying rollers are needed to convey them. Before winding or rolling, the strip needs to be accurately centered in the width direction to ensure the processing effect. The applicant has been engaged in the design and manufacture of aluminum strip production equipment for a long time. During the production process of aluminum strips, sometimes long-distance conveying is required, sometimes up to about one hundred meters. For such a long-distance conveying, the aluminum strip is inevitably offset. Therefore, it is necessary to correct the offset of the strip.

[0003] Existing strip deviation correction devices often use the method of deviation correction rollers. The deviation correction rollers are pushed or pulled at one end support of the acting cylinder to realize the swing of the deviation correction rollers, and then the return and centering of the strip are realized. However, this single-roller deviation correction method has poor stability and is prone to over-correction.

[0004] Therefore, it is necessary to develop a strip centering device for the above-mentioned defects. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a strip centering device, which adopts the method of arranging two deviation correction rollers in parallel on a movable frame, and realizes deviation correction by the linkage of the two rollers, and the operation is more stable and reliable.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The strip centering device of the utility model includes a fixed frame, a rotary pin shaft, a movable frame, a deviation correction roller and an acting cylinder. The fixed frame is a welded frame structure. The top of the fixed frame is connected to the movable frame through the rotary pin shaft. The two deviation correction rollers are horizontally arranged in parallel on the movable frame. The movable frame is connected to the piston rod end of the acting cylinder, and the root of the acting cylinder is hinged to the bottom of the fixed frame. The strip to be corrected is passed through the upper and lower deviation correction rollers in an S shape in turn.

[0008] Furthermore, it also includes a bearing position base. Both ends of the deviation correction roller are supported by bearing seats, and the bearing seats are installed on the vertical surface of the movable frame through the bearing position base.

[0009] Further, the bearing seat base includes a main seat body, a limiting plate and a set screw. The bottom of the main seat body is fixedly connected to the vertical surface of the movable frame, and a mounting hole for bolt-connecting the bearing seat is provided on the top surface of the main seat body; the two limiting plates are respectively fixedly connected to the upper and lower ends of the top surface of the main seat body, the set screw is threadedly connected to the threaded hole of the limiting plate, and the inner end of the set screw abuts against the upper and lower side walls of the bearing seat.

[0010] Further, the root of the rotary pin shaft is fixedly inserted into the shaft hole of the fixed frame, the cantilever end of the rotary pin shaft is connected to the pin shaft seat through a radial bearing, and the outer shell of the pin shaft seat is fixedly connected to the square frame of the movable frame.

[0011] Further, an upper guide wheel and a lower guide wheel are further included. One of the upper guide wheels is respectively arranged at both ends of the top of the movable frame, and one of the lower guide wheels is respectively arranged at both ends of the bottom of the movable frame; a top guide box is arranged at the position of the upper guide wheel on the fixed frame, and a bottom guide box is arranged at the position of the lower guide wheel; the upper guide wheel and the lower guide wheel respectively slide in a guiding manner in the top guide box and the bottom guide box.

[0012] Further, a guide wheel support rod is further arranged on the movable frame. The top end of the guide wheel support rod is fixedly connected to the outer shell of the pin shaft seat, and the bottom end is connected to the mounting plate of the lower guide wheel; the axis of the lower guide wheel coincides with the center of the rotary pin shaft.

[0013] Further, a lining plate is arranged on the side wall of the top guide box in contact with the upper guide wheel.

[0014] Further, a linear travel sensor is further included. The main body of the linear travel sensor is installed at the middle position of the outer vertical wall of the fixed frame through a hinge seat, and the end of the measuring rod of the linear travel sensor is connected to the inner vertical wall of the movable frame through a hinge support.

[0015] Further, a strip position detection mechanism is further included. The strip position detection mechanism is arranged behind the fixed frame to detect the width-direction position of the strip output by the lower deviation rectifying roller below and feedback a signal to the equipment controller.

[0016] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0017] In the strip centering device of the present utility model, by arranging the two deviation rectifying rollers separately up and down on the movable frame, when the movable frame swings relative to the fixed frame, the two deviation rectifying rollers synchronously generate a deviation rectifying angle, and the two deviation rectifying rollers cooperate to gradually produce a deviation rectifying effect. In the strip centering device of the present utility model, the two deviation rectifying rollers are arranged in parallel on the movable frame, and the deviation rectification is realized by the two-roller linkage method, and the operation is more stable and reliable.

[0018] In addition, the setting of the bearing seat base enables a certain distance to be left between the fixed frame and the movable frame, facilitating the installation of other components; the setting of the limit plate and the setscrew enables the adjustment of the height positions of the bearing seats at both ends of the deviation rectifying roller during the installation of the deviation rectifying roller, thereby ensuring the precise parallelism of the two deviation rectifying rollers. By adding a radial bearing between the cantilever end of the rotary pin shaft and the pin shaft seat, the resistance during the swinging process of the movable frame can be reduced. By setting a guide wheel and a guide box mechanism between the movable frame and the fixed frame, the distance stability between the two is improved, avoiding the failure that the bottom of the movable frame lifts relative to the fixed frame during the swinging adjustment of the movable frame; the setting of the guide wheel support rod ensures the angle of the mounting plate of the lower guide wheel, making the axis line of the lower guide wheel coincide with the center of the circle of the rotary pin shaft, that is, during the swinging adjustment of the movable frame, the lower guide wheel rolls along the circumferential direction without axial misalignment. The setting of the lining plate can play a role in reducing wear and facilitating replacement and maintenance. By adding a linear travel sensor, the deflection angle of the movable frame relative to the fixed frame can be indirectly measured and fed back to the equipment controller, avoiding mechanical damage caused by excessive deflection. By adding a strip position detection mechanism, the two edge positions of the strip can be continuously detected, and then it can be fed back whether the strip is adjusted and centered properly, facilitating the precise closed-loop control of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the drawings.

[0020] Figure 1 It is a front view structural schematic diagram of the strip centering device of the present invention;

[0021] Figure 2 It is a left view structural schematic diagram of the strip centering device of the present invention;

[0022] Figure 3 is Figure 1 the sectional structural schematic diagram of the A-A part in

[0023] Figure 4 is Figure 1 the sectional structural schematic diagram of the B-B part in

[0024] Figure 5 is Figure 1 the sectional structural schematic diagram of the C-C part in

[0025] Figure 6 is Figure 2 the partial enlarged structural schematic diagram of the part in

[0026] Description of reference numerals: 1, fixed frame; 101, lining plate; 102, bottom guide box; 103, top guide box; 2, rotary pin shaft; 201, radial bearing; 3, movable frame; 301, push arm; 302, hinge support; 303, guide wheel support rod; 304, pin shaft seat; 4, bearing seat base; 401, limit plate; 402, setscrew; 5, deviation rectifying roller; 501, bearing seat; 6, upper guide wheel; 7, lower guide wheel; 8, linear travel sensor; 9, acting cylinder; 901, rotating shaft; 902, support base; 10, strip position measuring mechanism; 11, strip. Detailed implementation manners

[0027] The core of the present utility model is to provide a strip centering device, which adopts the method of arranging two deviation rectifying rollers in parallel on a movable frame, and realizes deviation rectification by the linkage mode of the two rollers, so that the operation is more stable and reliable.

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] Referring to the accompanying drawings, Figure 1 is the front view structural schematic diagram of the strip centering device of the present utility model; Figure 2 is the left view structural schematic diagram of the strip centering device of the present utility model; Figure 3 is Figure 1 the sectional view structural schematic diagram of part A-A in

[0031] Figure 4 is Figure 1 the sectional view structural schematic diagram of part B-B in Figure 5 is Figure 1 the sectional view structural schematic diagram of part C-C in Figure 6 is Figure 2 the partial enlarged structural schematic diagram of part I in

[0032] In a specific implementation manner, as Figures 1 to 6As shown in the figure, the strip centering device of the present utility model includes a fixed frame 1, a rotary pin shaft 2, a movable frame 3, a deviation rectifying roller 5 and an acting cylinder 9. The fixed frame 1 is a frame structure welded by square tubes, including a bottom support and a vertical frame part. The top of the fixed frame 1 is pin-connected to the middle position of the cross beam at the top of the movable frame 3 through the rotary pin shaft 2. Two deviation rectifying rollers 5 are horizontally and parallelly arranged on the movable frame 3, and are arranged separately up and down. The movable frame 3 is connected to the end of the piston rod of the acting cylinder 9, and the root of the acting cylinder 9 is hinged to the bottom of the fixed frame 1. The strip 11 to be centered passes through the upper and lower deviation rectifying rollers 5 in an S shape in sequence.

[0033] Specifically, as Figure 4 shown, the acting cylinder 9 adopts an oil cylinder with controllable stroke. The root of the acting cylinder 9 is connected to the support base 902 through the rotating shaft 901, and the support base 902 is installed on the bottom cross beam of the fixed frame 1 by screws. The top of the acting cylinder 9 is connected to the push arm 301 at the bottom of the movable frame 3 through a pin shaft.

[0034] By arranging the two deviation rectifying rollers 5 separately up and down on the movable frame 3, when the movable frame 3 swings relative to the fixed frame 1, the two deviation rectifying rollers 5 synchronously generate deviation rectifying angles, and the two deviation rectifying rollers 5 cooperate to gradually produce a deviation rectifying effect. For the strip centering device of the present utility model, by adopting the method of arranging two deviation rectifying rollers in parallel on the movable frame and realizing deviation rectification in the way of two-roller linkage, the operation is more stable and reliable.

[0035] In a specific embodiment of the present utility model, as Figure 2 and Figure 6 shown, the strip centering device of the present utility model further includes a bearing position base 4. The bearing position base 4 is formed by welding plates. Both ends of the deviation rectifying roller 5 are supported by bearing seats 501 respectively, and the bearing seats 501 are installed on the vertical surface of the movable frame 3 through the bearing position base 4.

[0036] Specifically, as Figure 6 shown, the bearing position base 4 includes a main seat body, a limit plate 401 and a top screw 402. The bottom of the main seat body is directly welded to the vertical surface of the movable frame 3, and the top surface of the main seat body is provided with mounting holes for bolt-connecting the bearing seats 501. Two limit plates 401 are respectively welded to the upper and lower ends of the top surface of the main seat body. The top screw 402 is threadedly connected to the threaded hole of the limit plate 401, and the inner end of the top screw 402 abuts against the upper and lower side walls of the bearing seat 501. A lock nut for preventing loosening is also threadedly connected to the top screw 402.

[0037] Through the setting of the bearing position base 4, a certain distance is left between the fixed frame 1 and the movable frame 3, which is convenient for installing other components; through the setting of the limit plate 401 and the top screw 402, the height positions of the bearing seats 501 at both ends of the deviation rectifying roller 5 can be adjusted during the installation of the deviation rectifying roller 5, so as to ensure the accurate parallelism of the two deviation rectifying rollers 5.

[0038] In a specific embodiment of the present utility model, as Figure 1 and Figure 3 shown, the root of the rotary pin shaft 2 is fixedly inserted into the shaft hole of the fixed frame 1. An interference fit can be adopted between the two, or a retaining ring can be used to axially lock the other end of the rotary pin shaft 2. The cantilever end of the rotary pin shaft 2 is connected to the pin shaft seat 304 through a radial bearing 201, and the outer shell of the pin shaft seat 304 is fixedly connected to the square frame of the movable frame 3.

[0039] By adding a radial bearing 201 between the cantilever end of the rotary pin shaft 2 and the pin shaft seat 304, the resistance during the swinging process of the movable frame 3 can be reduced.

[0040] In a specific embodiment of the present utility model, as Figure 1 and Figure 5 shown, the strip centering device of the present utility model further includes an upper guide wheel 6 and a lower guide wheel 7. One upper guide wheel 6 is respectively arranged at both ends of the top of the movable frame 3, and one lower guide wheel 7 is respectively arranged at both ends of the bottom of the movable frame 3. The fixed frame 1 is fixedly connected with a top guide box 103 at the position of the upper guide wheel 6, and is fixedly connected with a bottom guide box 102 at the position of the lower guide wheel 7. The sides of the top guide box 103 and the bottom guide box 102 facing the upper guide wheel 6 and the lower guide wheel 7 are set as openings, and the upper guide wheel 6 and the lower guide wheel 7 are respectively guided and slide in the top guide box 103 and the bottom guide box 102.

[0041] Specifically, as Figure 1 shown, a guide wheel support rod 303 is further arranged on the movable frame 3. The top end of the guide wheel support rod 303 is fixedly connected to the outer shell of the pin shaft seat 304, and the bottom end is connected to the mounting plate of the lower guide wheel 7, that is, the guide wheel support rod 303 is inclined. It is necessary to ensure that the axis line of the lower guide wheel 7 coincides with the center of the rotary pin shaft 2.

[0042] Specifically, as Figure 5 shown, a lining plate 101 is arranged on the side wall of the top guide box 103 in contact with the upper guide wheel 6. The lining plate 101 is made of a cast iron plate or a polytetrafluoroethylene plate with good wear resistance.

[0043] By arranging a guide wheel and guide box mechanism between the movable frame 3 and the fixed frame 1, the distance stability between the two is improved, and the fault that the bottom of the movable frame 3 is lifted relative to the fixed frame 1 during the swinging adjustment of the movable frame 3 is avoided; through the arrangement of the guide wheel support rod 303, the angle of the mounting plate of the lower guide wheel 7 is ensured, so that the axis line of the lower guide wheel 7 coincides with the center of the rotary pin shaft 2, that is, during the swinging adjustment of the movable frame 3, the lower guide wheel 7 rolls along the circumferential direction without axial misalignment. Through the arrangement of the lining plate 101, the functions of reducing wear and facilitating replacement and maintenance can be achieved.

[0044] In a specific embodiment of the present utility model, as Figure 1 and Figure 2 shown, the strip centering device of the present utility model further includes a linear travel sensor 8. The linear travel sensor 8 specifically uses a linear displacement sensor, and its function is to convert the linear mechanical displacement into an electrical signal. To achieve this effect, a variable resistance slide rail is usually fixed at the fixed part of the sensor, and different resistance values are measured by the displacement of the slide on the slide rail. The main body of the linear travel sensor 8 is installed at the middle position of the outer vertical wall of the fixed frame 1 through a hinge seat, and the end of the measuring rod of the linear travel sensor 8 is connected to the inner vertical wall of the movable frame through a hinge support 302.

[0045] By adding the linear travel sensor 8, the deflection angle of the movable frame 3 relative to the fixed frame 1 can be indirectly measured and fed back to the equipment controller, avoiding mechanical damage caused by excessive deflection.

[0046] In a specific embodiment of the present utility model, as Figure 2 shown, the strip centering device of the present utility model further includes a strip position detection mechanism 10. The strip position detection mechanism 10 is arranged behind the fixed frame to detect the position of the strip 11 output by the lower deviation correction roller 5 in the width direction and feed back the signal to the equipment controller.

[0047] Specifically, two slot-type inductance measurement sensors are arranged inside the frame of the strip position detection mechanism 10. The slot-type inductance measurement sensors are clamped into the two edge positions of the strip 11 and detect the two edge positions of the strip 11.

[0048] By adding the strip position detection mechanism 10, the two edge positions of the strip 11 can be continuously detected, and then it can be fed back whether the strip 11 is adjusted and centered properly, which is convenient for the equipment to perform closed-loop precise control.

[0049] The working process of the strip centering device of the present utility model: The strip 11 passes through the upper and lower deviation correction rollers 5 in an S shape in sequence. The upper part is the feeding end, and the lower part is the discharging end. During the normal conveying process, when the strip position detection mechanism 10 detects that the strip 11 deviates to the left, it feeds back the signal to the equipment controller. The equipment controller controls the action cylinder 9 to contract and pull the push arm 301 back. The push arm 301 drives the movable frame 3 to swing to the right, and the two deviation correction rollers 5 present an inclined state with the left side lower and the right side higher. The conveyed strip 11 is more stressed on the left side at both deviation correction rollers 5, and the strip 11 slowly moves to the right during the conveying process to achieve the centering effect. When the strip 11 deviates to the right, the action cylinder 9 makes a pushing action, and the process is the same as above and will not be elaborated here.

[0050] In summary, for the strip centering device of the present utility model, by arranging two deviation rectifying rollers 5 vertically separated on the movable frame 3, when the movable frame 3 swings relative to the fixed frame 1, the two deviation rectifying rollers 5 synchronously generate deviation rectifying angles, and the two deviation rectifying rollers 5 cooperate to gradually produce a deviation rectifying effect. For the strip centering device of the present utility model, by adopting the method of arranging two deviation rectifying rollers in parallel on the movable frame, the deviation rectification is realized by the linkage mode of the two rollers, and the operation is more stable and reliable. In addition, through the setting of the bearing position base 4, a certain distance is left between the fixed frame 1 and the movable frame 3, which is convenient for installing other components; through the setting of the limit plate 401 and the set screw 402, the height positions of the two ends of the bearing seats 501 of the deviation rectifying roller 5 can be adjusted when the deviation rectifying roller 5 is installed, so as to ensure that the two deviation rectifying rollers 5 are accurately parallel. By adding a radial bearing 201 between the cantilever end of the rotary pin shaft 2 and the pin shaft seat 304, the resistance during the swinging process of the movable frame 3 can be reduced. By arranging a guide wheel and a guide box mechanism between the movable frame 3 and the fixed frame 1, the spacing stability between the two is improved, and the fault that the bottom of the movable frame 3 is lifted relative to the fixed frame 1 during the swinging adjustment of the movable frame 3 is avoided; through the setting of the guide wheel support rod 303, the installation plate angle of the lower guide wheel 7 is ensured, so that the axis line of the lower guide wheel 7 coincides with the center of the rotary pin shaft 2, that is, during the swinging adjustment of the movable frame 3, the lower guide wheel 7 rolls along the circumferential direction without axial misalignment. Through the setting of the lining plate 101, the functions of reducing wear and facilitating replacement and maintenance can be achieved. By adding a linear travel sensor 8, the deflection angle of the movable frame 3 relative to the fixed frame 1 can be indirectly measured and fed back to the equipment controller, so as to avoid mechanical damage caused by excessive deflection. By adding a strip position detection mechanism 10, the two edge positions of the strip 11 can be continuously detected, and then it can be fed back whether the strip 11 is adjusted and centered properly, which is convenient for the equipment to perform closed-loop precise control.

[0051] In the description of this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0052] The above-described embodiments are only used to describe the preferred mode of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A strip centering device, characterized in that: The invention comprises a fixed frame (1), a rotating pin shaft (2), a movable frame (3), a deviation correction roller (5) and an action cylinder (9); the fixed frame (1) is a welded frame structure; the top of the fixed frame (1) is connected to the movable frame (3) via the rotating pin shaft (2); two deviation correction rollers (5) are arranged horizontally and in parallel on the movable frame (3); the movable frame (3) is connected to the piston rod end of the action cylinder (9); the root of the action cylinder (9) is hinged to the bottom of the fixed frame (1); the strip (11) to be deflected passes through the upper and lower deviation correction rollers (5) in sequence in an S-bend.

2. The strip centering device according to claim 1, characterized in that: It also comprises a bearing seat base (4), and the two ends of the deviation correction roller (5) are respectively supported by bearing seats (501), and the bearing seat (501) is installed on the vertical surface of the movable frame (3) through the bearing seat base (4).

3. The strip centering device according to claim 2, characterized in that: The bearing seat base (4) comprises a main seat body, a limiting plate (401) and a top screw (402); the bottom of the main seat body is fixedly connected to the vertical surface of the movable frame (3); the top surface of the main seat body is provided with a mounting hole for bolting the bearing seat (501); the two limiting plates (401) are respectively fixedly connected to the upper and lower ends of the top surface of the main seat body; the top screw (402) is threadedly connected to the threaded hole of the limiting plate (401), and the inner end of the top screw (402) abuts against the upper and lower side walls of the bearing seat (501).

4. The strip centering device according to claim 1, characterized in that: The root of the rotary pin shaft (2) is fixedly connected to the shaft hole of the fixed frame (1), the cantilever end of the rotary pin shaft (2) is connected to the pin shaft seat (304) via a radial bearing (201), and the outer shell of the pin shaft seat (304) is fixedly connected to the square frame of the movable frame (3).

5. The strip centering device according to claim 4, characterized in that: The movable frame (3) further comprises an upper guide wheel (6) and a lower guide wheel (7); the upper guide wheel (6) is respectively arranged at the two ends of the top of the movable frame (3), and the lower guide wheel (7) is respectively arranged at the two ends of the bottom of the movable frame (3); the fixed frame (1) is provided with a top guide box (103) at the position of the upper guide wheel (6), and a bottom guide box (102) is provided at the position of the lower guide wheel (7); the upper guide wheel (6) and the lower guide wheel (7) are respectively guided and slid in the top guide box (103) and the bottom guide box (102).

6. The strip centering device according to claim 5, characterized in that: The movable frame (3) is also provided with a guide wheel support rod (303), the top end of which is fixedly connected to the outer shell of the pin shaft seat (304), and the bottom end of which is connected to the mounting plate of the lower guide wheel (7); the axis of the lower guide wheel (7) coincides with the center of the circle of the rotary pin shaft (2).

7. The strip centering device according to claim 5, characterized in that: A lining plate (101) is provided on the side wall in the top guide box (103) that contacts the upper guide wheel (6).

8. The strip centering device according to claim 1, characterized in that: It also includes a linear travel sensor (8), the main body of which is installed at the middle position of the outer wall of the fixed frame (1) through a hinge seat, and the end of the measuring rod of the linear travel sensor (8) is connected to the inner wall of the movable frame through a hinge support (302).

9. The strip centering device according to claim 1, characterized in that: It also includes a strip position detection mechanism (10), which is arranged behind the fixed frame to detect the width direction position of the strip (11) output by the deviation correction roller (5) below and feed back a signal to the equipment controller.

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