Guide plate device

Abstract

The invention discloses a guide plate device, belongs to the technical field of steel and non-ferrous metal plate strip machining, and aims to solve the problem that an existing guide plate cannot be matched with an s-shaped swing tension roller in a temper mill. The guide plate device comprises a fixed guide plate (3), a first movable guide plate (1), a lifting sliding block (6), a support (4), a lifting driving mechanism (8), a swing driving mechanism (5) and a first telescopic driving mechanism (2), the lifting driving mechanism (8) can drive the lifting sliding block (6) to move up and down along the support (4), and the swing driving mechanism (5) can drive the fixed guide plate (3) to swing around an upper rotating shaft (7). And the first movable guide plate (1) can extend rightwards or retract leftwards relative to the fixed guide plate (3). The guide plate device has the functions of lifting, swinging and stretching and retracting, and can be well matched with an s-shaped swinging tension roller in a temper mill unit for use, so that the strip threading efficiency of a steel coil is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel and nonferrous metal plate and strip processing, in particular to a guide plate device. Background Art

[0002] In the steel processing industry, skin-pass mills are crucial equipment for improving strip flatness, surface roughness, and eliminating yield flats. The traditional strip threading process involves feeding the coil head into the skin-pass mill's roll gap before feeding it into the coiler. This process often requires manual intervention, resulting in complex and inefficient operations.

[0003] With the development of industrial automation, one-touch strip threading technology has emerged. This technology aims to improve production efficiency and product quality by improving mechanical equipment and layout, combined with automated control systems, to achieve automatic strip threading. The existing skin-pass mill's guide plate is a fixed structure that cannot be used with the S-shaped swinging tension roller in the skin-pass mill, thus preventing the one-touch strip threading function. Summary of the Invention

[0004] In order to solve the problem that the existing guide plate cannot cooperate with the S-shaped swing tension roller in the leveling machine unit, the present invention provides a guide plate device, which has the functions of lifting, swinging and telescopic, and can be well used in conjunction with the S-shaped swing tension roller in the leveling machine unit to improve the efficiency of steel coil threading.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A guide plate device includes a fixed guide plate, a first movable guide plate, a lifting slider, a bracket, a lifting drive mechanism, a swing drive mechanism and a first telescopic drive mechanism. The lifting drive mechanism can drive the lifting slider to move up and down along the bracket. The left end of the fixed guide plate is connected to the upper part of the lifting slider through an upper rotating shaft. The swing drive mechanism can drive the fixed guide plate to swing around the upper rotating shaft. The fixed guide plate and the first movable guide plate are arranged in a stacked manner. The first telescopic drive mechanism can make the first movable guide plate extend to the right or retract to the left relative to the fixed guide plate.

[0007] The beneficial effects of the present invention are:

[0008] 1. Combined with other equipment in the leveler unit, the steel strip can be automatically threaded with one click. When leveling steel coils of varying sizes, the strip passes through the uncoiler, onto the tension roller, and then through the leveler for leveling. The guide plate device effectively coordinates with the uncoiler and tension roller, ensuring smooth entry of the strip into the leveler without manual intervention.

[0009] 2. The entire device is more compact and its retraction and lifting functions are more complete. In the transmission mechanism, the hydraulic motor is used as the main lifting power, which saves a lot of bottom space compared to the traditional hydraulic cylinder lifting guide plate. Brief Description of the Drawings

[0010] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0011] Figure 1 It is a front view schematic diagram of the guide plate device described in the present invention.

[0012] Figure 2 It is a top view schematic diagram of the lifting drive mechanism.

[0013] Figure 3 It is a schematic diagram of the guide plate device described in the present invention when it contains a second movable guide plate.

[0014] Figure 4 It is a schematic diagram of the working state of the guide plate device described in the present invention.

[0015] Description of the Reference Numerals

[0016] 1. First movable guide plate; 2. First telescopic drive mechanism; 3. Fixed guide plate; 4. Support; 5. Swing drive mechanism; 6. Lifting slider; 7. Upper rotating shaft; 8. Lifting drive mechanism; 9. Lower rotating shaft; 10. Second movable guide plate; 11. Second telescopic drive mechanism; 12. Uncoiler; 13. Entrance side tension roller; 14. Steel coil.

[0017] 21. First telescopic hydraulic cylinder; 22. Second telescopic hydraulic cylinder.

[0018] 81. Motor; 82. Coupling; 83. Connecting shaft; 84. Gear; 85. Rack.

[0019] 131. Upper roller; 132. Lower roller; 133. Upper channel. Detailed Description of the Embodiments

[0020] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] For the convenience of understanding and description, an absolute positional relationship is adopted in the following description of the present invention. Without special说明, the orientation word "upper" means Figure 1 the upper side direction in Figure 1 the orientation word "lower" means Figure 1 the lower side direction in Figure 1 the orientation word "left" means Figure 1 the left side direction in Figure 1 the orientation word "right" means the right side direction in

[0022] the orientation word "front" means the direction perpendicular to Figure 1 the paper surface of and pointing to the inner side of the paper surface, and the orientation word "rear" means the direction perpendicular to

[0023] the paper surface of Figure 2 and pointing to the outer side of the paper surface.

[0024]

[0025] Figure 1

[0026]

[0027]

[0028] Figure 3

[0029]

[0030]

[0031]

[0032] <00The present invention is described from the perspective of the reader or user, but the above-mentioned directional terms should not be understood or interpreted as limiting the scope of protection of the present invention. The dimensions and angles of the components herein can be determined by those skilled in the art based on actual needs or limited experiments.

[0022] like Figure 1 As shown, a guide plate device described in an embodiment of the present invention includes a fixed guide plate 3, a first movable guide plate 1, a lifting slider 6, a bracket 4, a lifting drive mechanism 8, a swing drive mechanism 5 and a first telescopic drive mechanism 2. The lifting drive mechanism 8 can drive the lifting slider 6 to move up and down along the bracket 4. The left end of the fixed guide plate 3 is connected to the upper part of the lifting slider 6 through the upper rotating shaft 7. The swing drive mechanism 5 can drive the fixed guide plate 3 to swing around the upper rotating shaft 7. The fixed guide plate 3 and the first movable guide plate 1 are arranged in a stacked manner. The first telescopic drive mechanism 2 can make the first movable guide plate 1 extend to the right or retract to the left relative to the fixed guide plate 3.

[0023] like Figure 2 As shown, the lifting drive mechanism 8 includes a motor 81, a coupling 82, a connecting shaft 83, a gear 84, and a rack 85 connected in sequence. The rack 85 extends in the vertical direction and can be fixed to the lifting slider 6 by bolts. The motor 81 is mounted on the bracket 4. The motor 81 can be an existing hydraulic motor. The motor 81 is higher than the lower end of the bracket 4. The motor 81 is placed in front of or behind the fixed guide plate 3. Compared with the traditional method of using a hydraulic cylinder placed at the bottom as the lifting power, it can better save space and do not require a very deep civil engineering pit for the installation of the whole machine, saving energy and manpower.

[0024] The swing drive mechanism 5 is a swing hydraulic cylinder, one end of which is connected to the lower part of the lifting slider 6 through the lower rotating shaft 9 (such as being hinged), and the other end of the swing hydraulic cylinder is connected to the fixed guide plate 3 (such as being hinged). The upper rotating shaft 7 and the lower rotating shaft 9 both extend in the front-to-back direction, and the upper rotating shaft 7 and the lower rotating shaft 9 are arranged at intervals up and down. The swing drive mechanism 5 can drive the fixed guide plate 3 to swing up and down around the upper rotating shaft 7.

[0025] like Figure 1 As shown, the first telescopic drive mechanism 2 is located below the fixed guide plate 3. The first telescopic drive mechanism 2 includes a first telescopic hydraulic cylinder 21 and a second telescopic hydraulic cylinder 22 connected in series. One end of the first telescopic hydraulic cylinder 21 is connected to the fixed guide plate 3, the other end of the first telescopic hydraulic cylinder 21 is connected to one end of the second telescopic hydraulic cylinder 22, and the other end of the second telescopic hydraulic cylinder 22 is connected to the first movable guide plate 1.

[0026] The fixed guide plate 3 extends generally in the left-right direction, tilted, with the right end of the first movable guide plate 1 always positioned outside the right end of the fixed guide plate 3. When the first telescopic drive mechanism 2 is extended, both the first and second telescopic hydraulic cylinders 21 and 22 are extended. When the first telescopic drive mechanism 2 is retracted, both the first and second telescopic hydraulic cylinders 21 and 22 are retracted.

[0027] When the fixed guide plate 3 is at the upper limit position, the lifting slider 6 is at the upper limit position, and the swing drive mechanism 5 is in an extended state; when the fixed guide plate 3 is at the lower limit position, the lifting slider 6 is at the lower limit position, and the swing drive mechanism 5 is in a retracted state.

[0028] like Figure 3 As shown, when the steel strip is thin, in order to better guide the steel strip head between the tension roller and the guide plate device, the guide plate device can also include a second movable guide plate 10 and a second telescopic drive mechanism 11. The fixed guide plate 3 and the second movable guide plate 10 are stacked, and the second telescopic drive mechanism 11 is located below the fixed guide plate 3. The left end of the first movable guide plate 1 can always be located outside the left end of the fixed guide plate 3. The second telescopic drive mechanism 11 can make the second movable guide plate 10 extend to the left or retract to the right relative to the fixed guide plate 3.

[0029] In order to enable the first movable guide plate 1 and the second movable guide plate 10 to be able to extend and retract stably and reliably, sliding grooves are provided at the front and rear ends of the fixed guide plate 3. For example, a first sliding groove is provided on the right side of the front and rear ends of the fixed guide plate 3, and a second sliding groove is provided on the left side of the front and rear ends of the fixed guide plate 3. The front and rear ends of the first movable guide plate 1 are matched and inserted into the first sliding grooves, and the front and rear ends of the second movable guide plate 10 are matched and inserted into the second sliding grooves.

[0030] The guide plate device can be installed between the uncoiler and the inlet-side tension roller in the leveling unit. In this case, the guide plate device can guide the steel strip head from the uncoiler to the inlet-side tension roller. The guide plate device can be referred to as the inlet-side guide plate device. Alternatively, the guide plate device can be installed between the coiler and the outlet-side tension roller in the leveling unit. The guide plate device can guide the steel strip head from the outlet-side tension roller to the coiler. The guide plate device can be referred to as the outlet-side guide plate device. The inlet-side guide plate device and the outlet-side guide plate device are bilaterally symmetrical and mirror images of each other.

[0031] To prevent the steel strip head from getting stuck at the joint of the first movable guide 1, the fixed guide 3, and the second movable guide 10, when the guide assembly is installed between the uncoiler and the inlet tension roller in the leveling unit, the first movable guide 1, the fixed guide 3, and the second movable guide 10 are stacked in sequence from top to bottom. When the guide assembly is installed between the coiler and the outlet tension roller in the leveling unit, the second movable guide 10, the fixed guide 3, and the first movable guide 1 are stacked in sequence from top to bottom.

[0032] The guide plate device further includes a first proximity switch, a second proximity switch, and a third proximity switch. The first proximity switch can detect whether the lifting slide 6 is at the lower limit position, the second proximity switch can detect whether the swing drive mechanism 5 is in a retracted state, and the third proximity switch can detect whether the first movable guide plate 1 is in a retracted state. The guide plate device further includes a fourth proximity switch, which can detect whether the second movable guide plate 10 is in a retracted state.

[0033] The guide plate device also includes a detection and control system, including proportional valves and proximity switches, within the main hydraulic system for precise flow control. A linear displacement sensor is installed within the hydraulic cylinder. These detection elements work together to form an intelligent control system. The linear displacement sensor detects the guide plate's actual operating position. The proportional valve precisely controls the flow in the retraction and swing hydraulic cylinders, thereby precisely controlling the extension and swing positions of the guide plate. Proximity switches are installed at each extreme position to protect the device and transmit detection signals to the control system, guiding intelligent operation of the device.

[0034] The following takes the example of the guide plate device being arranged between the uncoiler 12 and the inlet side tension roller 13 in the leveling machine unit to introduce the working process of the guide plate device. The inlet side tension roller can adopt the Chinese invention CN117696646A, which was published on March 15, 2024, and is disclosed in the "Leveling machine inlet and outlet vertical tension roller, leveling machine unit and belt threading method".

[0035] Step 1: The steel coil 14 is transported to the uncoiler 12. The lower roller 132 of the inlet side tension roller 13 is located at the upper limit position (i.e., the lower roller 132 of the inlet side tension roller 13 is located above the upper roller 131). The fixed guide plate 3 is located at the upper limit position. The first movable guide plate 1 is at the limit position extending to the right. The second movable guide plate 10 is at the limit position extending to the left. Figure 4 shown.

[0036] Specifically, once the lower roller of the inlet tension roller reaches its upper limit, the hydraulic motor receives a command to begin operation. The motor rotates the gear shaft, which in turn drives the rack and lift slider 6 upward. Once the position is reached, the detection element detects the position and sends a signal, causing the control system to stop motor 81. Depending on the steel coil, the swing cylinder with a linear displacement sensor is raised to different positions under the control of a proportional valve. The telescopic hydraulic cylinder with a built-in linear displacement sensor, under the control of a proportional valve, drives the first movable guide plate 1 to extend and retract to the appropriate position. The strip receives a command to begin threading.

[0037] Step 2: The uncoiler 12 works, so that the strip head of the steel coil 14 passes through the fixed guide plate 3, the upper channel 133 of the inlet side tension roller 13 and the roller gap of the leveler in sequence. When the strip head passes through the roller gap, the roller gap of the leveler closes and clamps the steel strip.

[0038] Step 3: Apply rolling force to the leveling rollers of the leveling mill, start the transmission motor of the leveling mill, and build tension on the steel strip between the leveling mill and the uncoiler 12.

[0039] Step 4, the fixed guide plate 3 moves to the lower limit position, and then the lower roller 132 of the entrance side tension roller 13 swings to the lower limit position; after the entrance is established, the first movable guide plate 1 is in the limit position of retracting to the left and waiting, the second movable guide plate 10 is in the limit position of retracting to the right and waiting, the fixed guide plate 3 moves to the lower limit position, and then the lower roller of the entrance side tension roller swings down to the lower limit position with the steel belt, automatically completing the S-shaped curve detour of the steel belt. At this time, the automatic belt threading on the entrance side is completed.

[0040] Specifically, after the strip is threaded, the first movable guide plate 1 retracts and the fixed guide plate 3 descends. After descending into place, the detection element detects a signal and sends a command to the tension roller, causing the upper roller of the tension roller to swing to the lower position. During this process, the entire guide plate is controlled and operated by the various detection elements and the hydraulic and electronic control system, and no manual intervention is required. The lifting function of the guide plate allows the guide plate to avoid the swing trajectory of the tension roller and avoid interference with the tension roller. The guide plate has both lifting and retracting functions, allowing it to guide steel coils of different diameters. By swinging and retracting, the guide plate minimizes the gap between the guide plate and the steel coil without damaging the strip, thereby avoiding strip jamming.

[0041] When the first and second movable guides 1 and 10 retract, the fixed guide 3 remains in place, while the guides associated with the automatic strip threading unit are required to move downward as a whole to avoid the swing range of the lower tension roller. This guide assembly effectively coordinates with other equipment in the leveling unit to achieve automatic strip threading (i.e., one-touch strip threading), allowing the steel strip to enter the leveling machine smoothly without manual intervention.

[0042] The above description is merely a specific embodiment of the present invention and is not intended to limit the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of protection of the present invention, should still fall within the scope of the present invention. Furthermore, the technical features of the present invention may be freely combined with each other, with each other's technical solutions, and with each other's technical solutions.

Claims

1. A guide plate device, characterized in that: The guide plate device comprises a fixed guide plate (3), a first movable guide plate (1), a lifting slider (6), a bracket (4), a lifting drive mechanism (8), a swing drive mechanism (5) and a first telescopic drive mechanism (2); the lifting drive mechanism (8) can drive the lifting slider (6) to move up and down along the bracket (4); the left end of the fixed guide plate (3) is connected to the upper part of the lifting slider (6) through an upper rotating shaft (7); the swing drive mechanism (5) can drive the fixed guide plate (3) to swing around the upper rotating shaft (7); the fixed guide plate (3) and the first movable guide plate (1) are stacked; and the first telescopic drive mechanism (2) can make the first movable guide plate (1) extend to the right or retract to the left relative to the fixed guide plate (3).

2. The guide plate device according to claim 1, characterized in that: The lifting drive mechanism (8) comprises a motor (81), a coupling (82), a connecting shaft (83), a gear (84) and a rack (85) which are connected in sequence. The rack (85) extends in the up-down direction. The rack (85) and the lifting slider (6) are connected and fixed. The motor (81) is mounted on the bracket (4). The motor (81) is higher than the lower end of the bracket (4).

3. The guide plate device according to claim 1, characterized in that: The swing drive mechanism (5) is a swing hydraulic cylinder, one end of which is connected to the lower part of the lifting slide block (6) through a lower rotating shaft (9), and the other end of which is connected to the fixed guide plate (3). The upper rotating shaft (7) and the lower rotating shaft (9) both extend in the front-rear direction, and the upper rotating shaft (7) and the lower rotating shaft (9) are arranged at an interval up and down.

4. The guide plate device according to claim 1, characterized in that: The first telescopic drive mechanism (2) is located below the fixed guide plate (3). The first telescopic drive mechanism (2) comprises a first telescopic hydraulic cylinder (21) and a second telescopic hydraulic cylinder (22). One end of the first telescopic hydraulic cylinder (21) is connected to the fixed guide plate (3), the other end of the first telescopic hydraulic cylinder (21) is connected to one end of the second telescopic hydraulic cylinder (22), and the other end of the second telescopic hydraulic cylinder (22) is connected to the first movable guide plate (1).

5. The guide plate device according to claim 3, characterized in that: When the fixed guide plate (3) is located at the upper limit position, the lifting slide block (6) is located at the upper limit position, and the swing drive mechanism (5) is in an extended state; when the fixed guide plate (3) is located at the lower limit position, the lifting slide block (6) is located at the lower limit position, and the swing drive mechanism (5) is in a retracted state.

6. The guide plate device according to claim 1, characterized in that: The guide plate device further comprises a second movable guide plate (10) and a second telescopic drive mechanism (11); the fixed guide plate (3) and the second movable guide plate (10) are stacked; the second telescopic drive mechanism (11) is located below the fixed guide plate (3); and the second telescopic drive mechanism (11) can cause the second movable guide plate (10) to extend to the left or retract to the right relative to the fixed guide plate (3).

7. The guide plate device according to claim 6, characterized in that: The first movable guide plate (1), the fixed guide plate (3) and the second movable guide plate (10) are stacked in sequence from top to bottom.

8. The guide plate device according to claim 6, characterized in that: The second movable guide plate (10), the fixed guide plate (3) and the first movable guide plate (1) are stacked in sequence from top to bottom.

9. The guide plate device according to claim 3, characterized in that: The guide plate device also comprises a first proximity switch, a second proximity switch and a third proximity switch, wherein the first proximity switch can detect whether the lifting slide block (6) is located at the lower limit position, the second proximity switch can detect whether the swing drive mechanism (5) is in a retracted state, and the third proximity switch can detect whether the first movable guide plate (1) is in a retracted state.

10. The guide plate device according to claim 6, characterized in that: The guide plate device also comprises a fourth proximity switch, which can detect whether the second movable guide plate (10) is in a retracted state.

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