Rolling mill outlet guide plate and working method thereof

Abstract

The invention discloses a rolling mill outlet guide plate and a working method thereof.The rolling mill outlet guide plate is arranged behind a roller of a rolling mill and comprises a driving assembly, a movable guide plate, a guide seat plate and a fixed guide plate, and the two ends of the fixed guide plate are fixedly connected to a rolling mill rack and located behind an outlet of the lower roller; the movable guide plate is arranged between the roller and the fixed guide plate, the two ends of the movable guide plate are connected to the guide seat plates in a guiding and sliding mode respectively, and the guide seat plates are fixedly connected to the inner side wall of the rolling mill rack. The driving assembly is installed on the rolling mill rack and can drive the movable guide plate to move front and back. By adopting the matching mode of the movable guide plate and the fixed guide plate, the threading difficulty is reduced, and the manpower is saved.

Description

Technical Field

[0001] The invention relates to the technical field of metal rolling mills, and in particular to a rolling mill outlet guide plate and a working method thereof. Background Art

[0002] During the rolling process, the guide plate of the aluminum strip rolling mill can guide the contour trajectory of the aluminum strip in the rolling mill, ensuring that the aluminum strip is rolled along a predetermined path to obtain the desired shape and size.

[0003] The existing guide plates in the exit direction of the rolling mill often adopt a fixed exit guide plate that is fixedly connected to the rolling mill frame and is set obliquely. Although the fixed exit guide plate is as close to the rear of the roller as possible, in order to ensure the replaceability of rollers of different diameters, the front end of the exit guide plate will inevitably leave a gap of a certain width with the roller. However, when the thickness of the aluminum strip is relatively small, during the process of threading from front to back, the strip head is easy to go down along the lower roller and enter the gap with the front end of the exit guide plate, and cannot be smoothly bridged to the exit guide plate. In the actual threading process, at least two operators are required to work together. One operator pushes the material strip at the feed end of the rolling mill, and the other operator uses simple tools such as wooden boards to lift the strip head upwards so that it overlaps the top surface of the exit guide plate before continuing to thread the strip.

[0004] In order to overcome the above problems, a rolling mill exit guide plate and a working method thereof are needed. Summary of the invention

[0005] The purpose of the present invention is to provide a rolling mill exit guide plate and a working method thereof, which adopts a movable guide plate and a fixed guide plate in a coordinated manner, thereby reducing the difficulty of belt threading and saving manpower.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a rolling mill outlet guide plate, which is arranged behind the rolling mill rolls, and comprises a driving assembly, a movable guide plate, a guide seat plate and a fixed guide plate, wherein both ends of the fixed guide plate are fixedly connected to the rolling mill frame and are located behind the rolling mill roll outlet below; the movable guide plate is arranged between the rolling mill rolls and the fixed guide plate, and both ends of the movable guide plate are respectively guided and slidably connected to one of the guide seat plates, and the guide seat plate is fixedly connected to the inner side wall of the rolling mill frame; the driving assembly is installed on the rolling mill frame and can drive the movable guide plate to move forward and backward.

[0008] Furthermore, the driving assembly includes a support beam and an acting cylinder. The two ends of the transversely arranged support beam are connected to the inner wall of the rolling mill frame through a flange plate. Two pin seats are arranged on the top surface of the support beam, and the pin seats are respectively pin-connected to the middle part of one of the acting cylinders; traction heads are respectively arranged at the two ends of the bottom front end of the movable guide plate, and the piston rod end of the acting cylinder extending forward is pin-connected to the traction head.

[0009] Furthermore, guide rail grooves with a lower front and a higher rear are provided on the side wall plates at both ends of the movable guide plate, and guide rail bars that slide in the guide rail grooves are provided on the inner side walls of the guide seat plate.

[0010] Furthermore, wear-resistant strips are attached to the three wall surfaces of the guide rail groove.

[0011] Furthermore, it also includes a front limiting structure, which includes a limiting block and a limiting top screw. The front end of the top surface of the guide seat plate is fixedly connected to a threaded hole plate, and the limiting top screw is threadedly connected in the threaded hole of the threaded hole plate; the limiting block is fixedly connected to the two ends of the rear part of the top surface of the movable guide plate, and the front end surface of the limiting block can abut against the limiting top screw nut.

[0012] Furthermore, it also includes a rear limiting component, which includes a proximity switch and a trigger plate, and the trigger plate is installed on the side wall at one end of the rear bottom of the movable guide plate; the proximity switch is installed on the top surface of the support beam through a small support, and the trigger plate can slide above the proximity switch sensor head.

[0013] Furthermore, it also includes a jet assembly, two of which are arranged at the two ends below the rear of the fixed guide plate, the air outlet of the jet assembly faces upward and the compressed air flow is sprayed to the edge of the bottom surface of the rolled strip through the clearance holes of the fixed guide plate.

[0014] Furthermore, the jet assembly includes an air guide component, an adapter plate, an outer sleeve, a reinforcement plate and a positioning top screw. The air guide component for guiding compressed air is installed on the adapter plate through a pipe clamp, and the outer sleeve is fixedly connected between the adapter plate and the reinforcement plate; the positioning top screw is threadedly connected to the threaded holes on the reinforcement plate and the side walls of the outer sleeve, and the positioning top screw can be pushed into the hole in the outer sleeve; a supporting cross tube is laterally arranged below the rear of the fixed guide plate, and the outer sleeve guide sliding sleeve is connected to the supporting cross tube; the number of the clearance holes is multiple and they are symmetrically arranged along the center line of the strip conveying.

[0015] Furthermore, the air-guiding component includes an air-guiding pipe, a ball joint seat and a nozzle, both ends of the air-guiding pipe are pipe joints connected to the air path, the air-guiding pipe is arranged parallel to the supporting cross pipe and is installed on the adapter plate through a pipe clamp; the nozzle is connected to the middle position of the air-guiding pipe through the ball joint seat that can guide air.

[0016] The present invention also discloses a rolling mill exit guide working method, which uses any one of the rolling mill exit guides described above to assist the strip head of the rolled strip to be threaded.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The exit guide plate of the rolling mill of the present invention can increase the guiding area of ​​the rolled strip by means of the movable guide plate and the fixed guide plate which are separately arranged at the front and back sides, thereby avoiding bending and having good stability; the movable guide plate is driven to move forward and backward by the driving assembly, and when threading the strip, the movable guide plate moves forward close to the roller to reduce the gap between the two, thereby avoiding the head of the strip from being stuck. The service life of the guide plate can be increased by the provision of wear-resistant pads, and the provision of the front end chamfer can be as close to the roller as possible, which has a better effect on threading thinner aluminum strips. The present invention adopts the matching mode of the movable guide plate and the fixed guide plate, which reduces the difficulty of threading the strip and saves manpower.

[0019] In addition, by setting two linkage cylinders to drive the movable guide plate, the movable guide plate can be pushed and pulled stably without offset; the cylinder connected by the pin shaft can reduce the influence of the installation error on the accuracy of the moving trajectory of the movable guide plate. By setting the guide groove and the guide bar, the guide area is large and the guide strength is high, which ensures the moving accuracy of the movable guide plate. By adding the wear-resistant strip between the friction surfaces, it is convenient for maintenance and replacement, and the service life of the equipment can be improved. The front end is limited by the cooperation of the limit block and the limit screw. The front and rear positions of the limit screw can be adjusted to achieve fine adjustment of the front end limit position of the movable guide plate, which can flexibly adapt to rollers of different diameters for strip threading; the limit screw is tightened on the threaded hole plate by the lock nut to prevent the limit screw from loosening. By setting the rear limit member, the backward limit position of the movable guide plate can be limited to ensure that the fixed guide plate can be used to stably guide the strip during normal strip rolling. By adding the jet assembly on both sides of the lower part of the strip, the rolling oil flowing over the top surface of the strip can be blown off to prevent the rolling oil from continuing to follow the strip to be transported backward. Through the nested support cross tube and outer sleeve, the outer sleeve can slide along the support cross tube, that is, it can move along the rolling width direction, that is, the installation position of the jet assembly can flexibly adapt to the width of the strip. Pipe joints are set at both ends of the air guide pipe to facilitate the connection of the air path and achieve ventilation; the nozzle is connected to the air guide pipe through a ball joint seat, and the direction of the nozzle can be flexibly adjusted to achieve a better jet degreasing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the main structure of the rolling mill exit guide plate in a retracted state according to the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure of the rolling mill outlet guide plate ejecting state of the present invention;

[0023] Figure 3 This is a schematic diagram of the top view of the structure of the rolling mill outlet guide plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the front view structure of the guide seat plate in the present invention;

[0025] Figure 5 It is a schematic cross-sectional structure diagram of the joint between the movable guide plate and the guide seat plate in the present invention;

[0026] Figure 6 This is a schematic diagram of the main structure of the jet assembly in the present invention;

[0027] Figure 7 for Figure 6 A schematic diagram of the structure as viewed from the middle A direction;

[0028] Figure 8 It is a schematic diagram of the structure of the installation part of the working cylinder in the present invention.

[0029] Explanation of the reference numerals: 1. Support beam; 101. Pin seat; 2. Action cylinder; 3. Movable guide plate; 301. Traction head; 302. Limit block; 303. Pad strip; 304. Guide rail groove; 4. Guide seat plate; 401. Guide rail; 402. Limit top screw; 5. Fixed guide plate; 501. Support cross tube; 502. Make way hole; 6. Jet assembly; 601. Air guide pipe; 602. Ball joint seat; 603. Nozzle; 604. Adapter plate; 605. Outer sleeve; 606. Reinforcement plate; 607. Positioning top screw; 7. Proximity switch; 701. Small support; 8. Roller; 9. Rolling mill frame. DETAILED DESCRIPTION

[0030] The core of the present invention is to provide a rolling mill exit guide plate and a working method thereof, which adopts a movable guide plate and a fixed guide plate in coordination, thereby reducing the difficulty of belt threading and saving manpower.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0033] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the main structure of the rolling mill exit guide plate in a retracted state according to the present invention; Figure 2 This is a schematic diagram of the main structure of the rolling mill outlet guide plate ejecting state of the present invention; Figure 3 This is a schematic diagram of the top view of the structure of the rolling mill outlet guide plate of the present invention; Figure 4 It is a schematic diagram of the front view structure of the guide seat plate in the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the joint between the movable guide plate and the guide seat plate in the present invention; Figure 6 This is a schematic diagram of the main structure of the jet assembly in the present invention; Figure 7 for Figure 6 A schematic diagram of the structure as viewed from the middle A direction; Figure 8 It is a schematic diagram of the structure of the installation part of the working cylinder in the present invention.

[0034] In a specific embodiment, Figures 1 to 8 As shown, the rolling mill exit guide plate of the present invention is arranged behind the roller 8 of the rolling mill, and includes a driving assembly, a movable guide plate 3, a guide seat plate 4 and a fixed guide plate 5. The two ends of the fixed guide plate 5 are fixedly connected to the rolling mill frame 9 and are located behind the exit of the lower roller 8. Flange plates for bolt connection are arranged at both ends of the fixed guide plate 5, that is, they are installed by flange bolts. The movable guide plate 3 is arranged between the roller 8 and the fixed guide plate 5. There are two guide seat plates 4 and they are symmetrically arranged along the conveying center line of the rolled strip. The two ends of the movable guide plate 3 are respectively guided and slidably connected to a guide seat plate 4, and the guide seat plate 4 is connected to the inner wall of the rolling mill frame 9 by bolts. The driving assembly is installed on the rolling mill frame 9 and can drive the movable guide plate 3 to move forward and backward.

[0035] Specifically, if Figures 1 to 3 As shown, the top surfaces of the movable guide plate 3 and the fixed guide plate 5 are both inclined with the front lower and the rear higher, and the tops of the movable guide plate 3 and the fixed guide plate 5 are fixedly connected with pads 301, which are arranged along the longitudinal direction. The pads 301 are made of steel with good wear resistance, and multiple pads 301 are arranged at equal intervals along the width direction of the guide plate.

[0036] Specifically, if Figure 1 and Figure 2 As shown, the front end bottom edge of the cushion strip 301 on the movable guide plate 3 is provided with an oblique chamfer.

[0037] The movable guide plate 3 and the fixed guide plate 5 are arranged separately in the front and rear, so that the guiding area of ​​the rolled strip can be increased, bending can be avoided, and stability is good; the movable guide plate 3 is driven to move forward and backward by the driving assembly, and the movable guide plate 3 moves forward to approach the roller 8 to reduce the gap between the two when threading the strip, so as to avoid the head of the strip being stuck. The wear-resistant pad strip 301 is arranged to increase the service life of the guide plate, and the front end chamfer is arranged to be as close to the roller 8 as possible, which has a better effect on threading thinner aluminum strips.

[0038] In a specific embodiment of the present invention, Figure 1 , Figure 2 and Figure 8 As shown, the driving assembly includes a support beam 1 and an acting cylinder 2, the number of the acting cylinders 2 is two and the two acting cylinders 2 are linked and synchronously operated. The two ends of the horizontally arranged support beam 1 are connected to the inner wall of the rolling mill frame 9 through a flange plate, and two pin seats 101 are arranged on the top surface of the support beam 1, and the pin seats 101 are respectively connected to the middle part of one of the acting cylinders 2. The two ends of the bottom of the front end of the movable guide plate 3 are respectively provided with traction heads 301, and the piston rod end of the acting cylinder 2 protruding forward is connected to the traction head 301 through the support ear seat pin.

[0039] Obviously, the acting cylinder 2 can be replaced by a hydraulic cylinder or a pneumatic cylinder, or even an electric push rod, and similar simple replacement methods all fall within the protection scope of the present invention.

[0040] By setting two linked action cylinders 2 to drive the movable guide plate 3, the movable guide plate 3 can be pushed and pulled stably without deviation; the action cylinders 2 connected by the pin shaft can reduce the influence of the installation error on the motion trajectory accuracy of the movable guide plate 3.

[0041] In a specific embodiment of the present invention, Figures 1 to 5 As shown, guide rail grooves 304 with a lower front and a higher rear are provided on the side wall plates at both ends of the movable guide plate 3, and guide rail bars 401 that slide in the guide rail grooves 304 are provided on the inner side wall of the guide seat plate 4.

[0042] Specifically, wear-resistant strips are attached to the three wall surfaces of the guide rail groove 304 , and the wear-resistant strips are in frictional contact with the wall surface of the guide rail bar 401 .

[0043] Obviously, a linear guide rail with a ball slider or a guide rod with a guide sleeve can also be used between the movable guide plate 3 and the guide seat plate 4. The guiding strength is just slightly worse, but it can also play a basic guiding role. Similar simple deformation and replacement methods all fall within the protection scope of the present invention.

[0044] The guide groove 304 and the guide bar 401 provide a large guide area and high guide strength, thereby ensuring the moving accuracy of the movable guide plate 3. By adding the wear-resistant strip between the friction surfaces, maintenance and replacement are facilitated, thereby increasing the service life of the equipment.

[0045] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the rolling mill exit guide plate of the present invention further includes a front limit structure, which includes a limit block 302 and a limit top screw 402. A threaded hole plate is welded and installed at the front end of the top surface of the guide seat plate 4, and the limit top screw 402 is threadedly connected in the threaded hole of the threaded hole plate, and the limit top screw 402 is arranged along the longitudinal direction. The limit block 302 is welded and installed at both ends of the rear part of the top surface of the movable guide plate 3, and the front end surface of the limit block 302 can abut against the nut of the limit top screw 402.

[0046] Specifically, a lock nut is threadedly connected to the limiting top screw 402, and the lock nut tightens the limiting top screw 402 onto the threaded hole plate.

[0047] The front end is limited by the cooperation of the limit block 302 and the limit screw 402. The front and rear positions of the limit screw 402 can be adjusted to achieve fine-tuning of the front end limit position of the movable guide plate 3, which can flexibly adapt to rollers 8 of different diameters for threading. The limit screw 402 is tightened on the threaded hole plate by the lock nut to prevent the limit screw 402 from loosening.

[0048] In a specific embodiment of the present invention, the rolling mill exit guide plate of the present invention further includes a rear limit member, the rear limit member includes a proximity switch 7 and a trigger plate, and the trigger plate is installed on the side wall of one end of the rear bottom of the movable guide plate 3. The proximity switch 7 is installed on the top surface of the support beam 1 through a small support 701, and the trigger plate can slide above the sensing head of the proximity switch 7. The proximity switch 7 is electrically connected to the electric control system of the rolling mill to ensure that the movable guide plate 3 is in a retracted state during normal strip rolling.

[0049] By setting the rear limiting member, the retreat limit position of the movable guide plate 3 can be limited, ensuring that the fixed guide plate 5 can stably guide the strip during normal strip rolling.

[0050] In a specific embodiment of the present invention, Figures 1 to 3 , Figure 6 and Figure 7 As shown, the rolling mill outlet guide plate of the present invention further includes an air jet assembly 6, and two air jet assemblies 6 are arranged at both ends of the lower rear portion of the fixed guide plate 5. The air outlet of the air jet assembly 6 faces upward and the compressed air flow is sprayed to the edge of the bottom surface of the rolled strip through the clearance hole 502 of the fixed guide plate 5, and the air flow is blown obliquely outward.

[0051] In the process of strip rolling, in order to improve the rolling quality, it is often necessary to spray rolling oil on the rolls. The rolling oil will transfer to the strip. If the rolling oil remaining on the strip is not cleaned, the entire production line will be contaminated. In addition, there is obvious rolling oil flow during winding, which will affect the appearance quality of the product.

[0052] By adding the jet assembly 6 on both sides of the lower part of the strip, the rolling oil flowing over from the top surface of the strip can be blown off, so as to prevent the rolling oil from continuing to be transported backward along with the strip.

[0053] Specifically, if Figure 6 and Figure 7 As shown, the jet assembly 6 includes an air guide component, an adapter plate 604, an outer sleeve 605, a reinforcement plate 606 and a positioning top screw 607. The air guide component for conveying compressed air is installed on the adapter plate 604 through a pipe clamp, and the outer sleeve 605 is welded between the adapter plate 604 and the reinforcement plate 606. The positioning top screw 607 is threadedly connected to the threaded holes of the reinforcement plate 606 and the side walls of the outer sleeve 605, and the positioning top screw 607 can be inserted into the hole in the outer sleeve 605. A supporting transverse tube 501 is horizontally arranged below the rear of the fixed guide plate 5, and both ends of the supporting transverse tube 501 are welded on the inner wall of the end side plate of the fixed guide plate 5, and the outer sleeve 605 is guided and slidably sleeved on the supporting transverse tube 501. In a specific embodiment, the supporting transverse tube 501 and the outer sleeve 605 are both square tubes and can be nested. The number of the clearance holes 502 is multiple and symmetrically arranged along the center line of the strip conveying.

[0054] Specifically, if Figure 6 and Figure 7 As shown, a lock nut is also threadedly connected to the positioning screw 607 , and the lock nut tightens the positioning screw 607 onto the reinforcing plate 606 .

[0055] By nesting the support transverse tube 501 and the outer sleeve 605, the outer sleeve 605 can slide along the support transverse tube 501, that is, it can move along the rolling width direction, that is, the installation position of the jet assembly 6 can flexibly adapt to the width of the strip.

[0056] Specifically, if Figure 6 and Figure 7 As shown, the air guide component includes an air guide pipe 601, a ball joint seat 602 and a nozzle 603. The two ends of the air guide pipe 601 are pipe joints connected to the air path. The air guide pipe 601 is arranged parallel to the supporting cross pipe 501 and is installed on the adapter plate 604 through a pipe clamp. The number of the pipe clamps is two and one is arranged at each end. The nozzle 603 is connected to the middle position of the air guide pipe 601 through the ball joint seat 602 that can guide air.

[0057] Pipe joints are provided at both ends of the air guide pipe 601 to facilitate the connection of the air path and achieve ventilation; the nozzle 603 is connected to the air guide pipe 601 through the ball joint seat 602, and the direction of the nozzle 603 can be flexibly adjusted to achieve a better jet oil removal effect.

[0058] The working principle of the exit guide of the rolling mill of the present invention is as follows: before threading the rolled thin strip, the operator first needs to determine the limit position of the movable guide plate 3 according to the diameter of the lower roller 8, and operate the human-machine interaction panel of the equipment. In the manual mode, the cylinder 2 is gradually pushed out, driving the movable guide plate 3 to move forward slowly. When the front end of the pad 301 moves to a suitable distance from the rear wall of the roller 8, the distance is preferably less than the thickness of the strip after rolling, and the cylinder 2 stops. Manually adjust the limit screw 402 of the front limit structure, and rotate the limit screw 402 counterclockwise so that the nut of the limit screw 402 contacts the front end face of the limit block 302, and locks the lock nut of the limit screw 402 to the threaded hole plate. In the automatic mode of the human-machine interaction panel, the operator switches the retracted state and the ejected state of the movable guide plate 3 to observe whether the action is flexible and whether the limit is normal. When threading the rolled thin strip, the human-machine interaction panel is operated to enter the ejection state from the retracted state, and the cylinder 2 is ejected, driving the movable guide plate 3 to move forward along the guide rail 401 to the threading position. At this time, the gap between the movable guide plate 3 and the roller 8 is reduced to the narrowest. The operator manually feeds the strip from the entrance of the roller 8. After the strip head passes through the roller 8, it passes through the movable guide plate 3 and the fixed guide plate 5 in turn. After completing the threading operation, before normal rolling, the human-machine interaction panel is operated to enter the retracted state from the ejection state, and the cylinder 2 is retracted, driving the movable guide plate 3 to return to the normal guiding position, and the proximity switch 7 is triggered to stop. During normal rolling, the outlet of the jet assembly 6 sprays compressed air upward, and the airflow is sprayed to the edge of the bottom surface of the rolled strip through the clearance hole 502 to blow away the flowing rolling oil.

[0059] In summary, the rolling mill exit guide of the present invention can increase the guiding area of ​​the rolled strip through the movable guide plate 3 and the fixed guide plate 5 that are separately arranged in front and back, avoid bending, and have good stability; the movable guide plate 3 is driven to move forward and backward by the driving assembly, and the movable guide plate 3 moves forward to approach the roller 8 during the strip threading to reduce the gap between the two, thereby avoiding the head of the strip from being stuck. The wear-resistant pad strip 301 is set to increase the service life of the guide plate, and the front end chamfer is set to be as close to the roller 8 as possible, which has a better effect on the threading of thinner aluminum strips. In addition, by setting two linkage cylinders 2 to drive the movable guide plate 3, the movable guide plate 3 can be pushed and pulled stably without offset; the cylinder 2 connected by the pin shaft can reduce the influence of the installation error on the motion trajectory accuracy of the movable guide plate 3. By setting the guide groove 304 and the guide bar 401, the guiding area is large, the guiding strength is high, and the moving accuracy of the movable guide plate 3 is guaranteed. By adding the wear-resistant strip between the friction surfaces, it is convenient for maintenance and replacement, and the service life of the equipment can be increased. The front end is limited by the cooperation of the limit block 302 and the limit screw 402. The front and rear positions of the limit screw 402 can be adjusted to achieve fine adjustment of the frontmost limit position of the movable guide plate 3, which can flexibly adapt to the rollers 8 of different diameters for strip threading; the limit screw 402 is tightened on the threaded hole plate by the lock nut to prevent the limit screw 402 from loosening. Through the setting of the rear limit member, the backward limit position of the movable guide plate 3 can be limited to ensure that the fixed guide plate 5 can guide the strip stably during the normal strip rolling process. By adding the jet assembly 6 on both sides of the lower part of the strip, the rolling oil flowing over the top surface of the strip can be blown off to prevent the rolling oil from continuing to follow the strip to be transported backward. Through the nested support cross tube 501 and the outer sleeve 605, the outer sleeve 605 can slide along the support cross tube 501, that is, the movement along the rolling width direction is realized, that is, the installation position of the jet assembly 6 can flexibly adapt to the width of the strip. Pipe joints are provided at both ends of the air guide pipe 601 to facilitate the connection of the air path and achieve ventilation; the nozzle 603 is connected to the air guide pipe 601 through the ball joint seat 602, and the direction of the nozzle 603 can be flexibly adjusted to achieve a better jet oil removal effect.

[0060] The present invention also discloses a rolling mill exit guide working method, which uses the rolling mill exit guide in any of the above embodiments to assist the strip head of the rolled strip to be threaded. The movable guide is moved forward to reduce the gap between the rollers, thereby avoiding the problem of head tying, that is, the strip head falls down through the gap and does not pass through the guide as set.

[0061] The rolling mill outlet guide plate working method of the present invention also includes the step of removing rolling oil on both sides of the strip by means of air blowing.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the 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 method part.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A rolling mill exit guide plate, arranged behind a rolling mill roll (8), characterized in that: The invention comprises a driving assembly, a movable guide plate (3), a guide seat plate (4) and a fixed guide plate (5), wherein both ends of the fixed guide plate (5) are fixedly connected to a rolling mill frame (9) and are located behind the outlet of the rolling roller (8) below; the movable guide plate (3) is arranged between the rolling roller (8) and the fixed guide plate (5), and both ends of the movable guide plate (3) are respectively connected to one of the guide seat plates (4) in a guided sliding manner, and the guide seat plate (4) is fixedly connected to the inner side wall of the rolling mill frame (9); the driving assembly is installed on the rolling mill frame (9) and can drive the movable guide plate (3) to move forward and backward.

2. The rolling mill exit guide plate according to claim 1, characterized in that: The driving assembly comprises a support beam (1) and an acting cylinder (2); the two ends of the transversely arranged support beam (1) are connected to the inner wall of the rolling mill frame (9) through flange plates; two pin seats (101) are arranged on the top surface of the support beam (1); the pin seats (101) are respectively connected to the middle part of one of the acting cylinders (2) by a pin; the two ends of the bottom front end of the movable guide plate (3) are respectively provided with traction heads (301); the piston rod end of the acting cylinder (2) extending forward is pin-connected to the traction heads (301).

3. The rolling mill exit guide plate according to claim 1, characterized in that: The side wall plates at both ends of the movable guide plate (3) are provided with guide rail grooves (304) which are lower in the front and higher in the rear, and the inner side wall of the guide seat plate (4) is provided with guide rail bars (401) which cooperate and slide in the guide rail grooves (304).

4. The rolling mill exit guide plate according to claim 3, characterized in that: Wear-resistant strips are attached to the three wall surfaces of the guide rail groove (304).

5. The rolling mill exit guide plate according to claim 2, characterized in that: It also includes a front limiting structure, which includes a limiting block (302) and a limiting top screw (402); the front end of the top surface of the guide seat plate (4) is fixedly connected to a threaded hole plate, and the limiting top screw (402) is threadedly connected in the threaded hole of the threaded hole plate; the limiting block (302) is fixedly connected to the two ends of the rear part of the top surface of the movable guide plate (3), and the front end surface of the limiting block (302) can abut against the nut of the limiting top screw (402).

6. The rolling mill exit guide plate according to claim 2, characterized in that: It also includes a rear limiting component, which includes a proximity switch (7) and a trigger plate, wherein the trigger plate is mounted on a side wall at one end of the rear bottom of the movable guide plate (3); the proximity switch (7) is mounted on the top surface of the support beam (1) via a small support (701), and the trigger plate can slide above the sensing head of the proximity switch (7).

7. The rolling mill exit guide plate according to claim 1, characterized in that: It also includes an air jet assembly (6), wherein two of the air jet assemblies (6) are arranged at the two ends below the rear of the fixed guide plate (5), the air outlet of the air jet assembly (6) faces upward and the compressed air flow is sprayed to the edge of the bottom surface of the rolled strip through the clearance hole (502) of the fixed guide plate (5).

8. The rolling mill exit guide plate according to claim 7, characterized in that: The jet assembly (6) comprises an air guide component, an adapter plate (604), an outer sleeve (605), a reinforcement plate (606) and a positioning screw (607). The air guide component for conveying compressed air is installed on the adapter plate (604) through a pipe clamp, and the outer sleeve (605) is fixedly connected between the adapter plate (604) and the reinforcement plate (606); the positioning screw (607) is threadedly connected to the threaded holes on the side walls of the reinforcement plate (606) and the outer sleeve (605), and the positioning screw (607) can be pushed into the hole in the outer sleeve (605); a supporting cross tube (501) is horizontally arranged at the lower rear part of the fixed guide plate (5), and the outer sleeve (605) is guided and slidably sleeved on the supporting cross tube (501); the number of the clearance holes (502) is multiple and they are symmetrically arranged along the center line of the strip conveying.

9. The rolling mill exit guide plate according to claim 8, characterized in that: The air guide component comprises an air guide pipe (601), a ball joint seat (602) and a nozzle (603); both ends of the air guide pipe (601) are pipe joints for connecting the air path; the air guide pipe (601) is arranged parallel to the supporting cross pipe (501) and is installed on the adapter plate (604) through a pipe clamp; the nozzle (603) is connected to the middle position of the air guide pipe (601) through the ball joint seat (602) capable of guiding air.

10. A rolling mill exit guide plate working method, characterized in that: The rolling mill exit guide plate described in any one of claims 1 to 9 is used to assist the strip head of the rolled strip to be threaded.

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