Strip finishing unit with coil uncoiling device and method

Abstract

The application provides a strip steel finishing unit strip coil uncoiling device, which comprises an uncoiler, an opening machine, a strip guide plate and a control system, a coil is sleeved on the uncoiler, the opening machine is arranged at the back of the uncoiler, upper and lower strip guide plates are hingedly arranged on the front side of the uncoiler, a first compression roller and a second compression roller are arranged on the upper strip guide plate, and a detection element is arranged on the lower strip guide plate, and the strip guide plate is arranged below the uncoiler and between the lower part of the coil and the lower strip guide plate. The application further provides a strip finishing unit strip coil automatic uncoiling method, which is implemented by using the strip steel finishing unit strip coil uncoiling device.

Description

Technical Field

[0001] This invention belongs to the field of strip steel finishing technology, specifically relating to a strip steel finishing unit uncoiling device and method. Background Technology

[0002] After rolling, the strip steel must undergo annealing, galvanizing, and finishing processes to obtain high-quality, qualified products. Subsequent cold-rolled products, due to the need for flipping for inspection or restrictions on transport direction, require the unit to have a bottom uncoiling function. Existing units use a manual bottom uncoiling method, where operators manually operate the uncoiler, starting machine, and other equipment to uncoil the steel coil and thread it onto the starting machine and subsequent equipment. This method, as a key operation at the beginning of the unit, requires manual operation, is labor-intensive, poses safety hazards, has low production efficiency, and hinders the reduction of personnel in unit operations. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a strip uncoiling device and method for a strip finishing mill, which can overcome the above problems or at least partially solve or alleviate them.

[0004] This invention proposes a strip uncoiling device for a strip finishing mill, comprising:

[0005] An uncoiler, on which a steel coil is mounted;

[0006] The uncoiler is located directly behind the uncoiler. An upper belt guide plate and a lower belt guide plate are hinged to the front side of the uncoiler. A first pressure roller and a second pressure roller are provided on the upper belt guide plate, and a detection element is provided on the lower belt guide plate.

[0007] A guide plate is provided at the rear lower part of the uncoiler and is located between the lower part of the steel coil and the lower belt guide plate.

[0008] The present invention also has the following optional features.

[0009] Optionally, both the lower belt guide plate and the upper belt guide plate are driven by a motor, and a permanent magnet is provided under each belt.

[0010] Optionally, a downward swing cylinder is provided on the rear side of the lower belt guide plate.

[0011] Optionally, an upper swing cylinder is provided on the rear side of the upper belt guide plate.

[0012] Optionally, a lifting cylinder is provided at the lower part of the guide plate, and a guide plate swing cylinder is provided at the end of the guide plate facing the lower belt guide plate.

[0013] Optionally, it also includes an upper winding trolley, on which an upper winding pressure roller is provided, and an upper winding lifting cylinder is provided between the upper winding pressure roller and the upper winding trolley.

[0014] This invention also proposes an automatic uncoiling method for strip steel finishing mills, implemented using the strip steel finishing mill uncoiling device described above, comprising the following steps:

[0015] S001: The loading trolley feeds the steel coil onto the uncoiler drum;

[0016] S002: The upper belt guide plate of the starting machine swings downward to press the steel coil with the first or second pressure roller, and the lower belt guide plate of the starting machine swings upward toward the lower tangent of the steel coil.

[0017] S003: The guide plate rises and swings to the point between the lower tangent of the steel coil and the lower belt guide plate;

[0018] S004: The upper winding pressure roller of the upper winding trolley rises and presses against the lower part of the steel coil;

[0019] S005: The belts of the upper and lower belt guide plates begin to rotate counterclockwise, and the uncoiler drum drives the steel coil to start rotating clockwise.

[0020] S006: The lead of the steel coil is thrown onto the lower belt guide plate by the magnetic force of the magnet on the upper belt guide plate and its own weight. At this time, the detection element detects the lead signal, and the uncoiler's drum, upper belt guide plate and lower belt guide plate stop running.

[0021] S007: The uncoiler's drum drives the steel coil to start rotating counterclockwise, and the belt of the lower belt guide plate starts rotating clockwise, guiding the head of the steel coil into the pinch roller of the starting machine. The uncoiler and the starting machine work together to continue feeding backward.

[0022] Optionally, it also includes step S008: the upper winding trolley, the upper belt guide plate, the lower belt guide plate and the guide belt guide plate return to their initial positions during the feeding process, and the automatic unwinding ends.

[0023] The automatic uncoiling process device and method for steel coils in the cold rolling mill of this invention utilizes a combination structure of an uncoiler, an upper coiling trolley pressure roller, a guide belt, an upper belt guide plate of the starting mill, a lower belt guide plate of the starting mill, and the starting mill itself to achieve the function of automatic uncoiling of steel coils. This realizes the function of automatic uncoiling of steel coils, improves the automated production of the entry section of the cold rolling mill, increases production efficiency, reduces the labor intensity of operators, and when applied to the cold rolling production line of steel strip, the reduction in personnel is significant. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0025] In the diagram: 1 Uncoiler; 2 Upper coil pressure roller; 3 Upper coil lifting cylinder; 4 Upper coil trolley; 5 Lifting cylinder; 6 Guide belt plate; 7 Guide plate swing cylinder; 8 Lower swing cylinder; 9 Detection element; 10 Lower belt guide plate; 11 Uncoiler; 12 Upper swing cylinder; 13 Upper belt guide plate; 14 First pressure roller; 15 Second pressure roller; 16 Steel coil.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0027] Example 1

[0028] refer to Figure 1 An embodiment of the present invention provides a strip finishing mill uncoiling device, comprising: an uncoiler 1, a starting machine 11, and a guide plate 6; a steel coil 16 is mounted on the drum of the uncoiler 1; the starting machine 11 is located directly behind the uncoiler 1, and an upper belt guide plate 13 and a lower belt guide plate 10 are hinged to the front side of the uncoiler 11. A first pressure roller 14 and a second pressure roller 15 are arranged side by side on the upper belt guide plate 13, and a detection element 9 is arranged on the lower belt guide plate 10; the guide plate 6 is located below and behind the uncoiler 1, and is located between the lower part of the steel coil 16 and the lower belt guide plate 10.

[0029] At the start of operation, after the steel coil 16 is mounted on the drum of the uncoiler 1, the upper belt guide plate 13 of the uncoiler 11 is swung downwards, causing the first pressure roller 14 and the second pressure roller 15 to press against the upper part of the steel coil 16. The lower belt guide plate 10 of the uncoiler 11 swings upwards, aligning with the lower tangent of the steel coil 16. Then, the guide plate 6 fills the gap between the steel coil 16 and the lower belt guide plate 10. The belts of the upper belt guide plate 13 and the lower belt guide plate 10 of the uncoiler 11 begin to rotate counterclockwise, and the drum of the uncoiler 1 drives the steel coil 16 to begin to rotate clockwise. After the lead strip unwinds under counterclockwise rotation, it falls onto the lower belt guide plate 10. At this time, the detection element 9 detects the lead strip signal, and the uncoiler drum 1, upper belt guide plate 13, and lower belt guide plate 10 stop running. The uncoiler drum 1 drives the steel coil 16 to start rotating counterclockwise, and the lower belt guide plate 10 belt starts rotating clockwise, guiding the lead strip of the steel coil 16 into the pinch roller of the starting machine 11. The uncoiler 1 and the starting machine 11 are linked and continue to feed backward. Finally, the upper belt guide plate 13 swings upward and the lower belt guide plate 10 swings downward, disengaging from the steel strip of the steel coil 16.

[0030] Example 2

[0031] refer to Figure 1 Based on Example 1, both the lower belt guide plate 10 and the upper belt guide plate 13 are driven by a motor, and permanent magnets are provided under the belts.

[0032] Both the lower belt guide plate 10 and the upper belt guide plate 13 are equipped with permanent magnets under their belts. When the steel coil 13 rotates clockwise, the permanent magnets under the belt of the upper belt guide plate 13 can temporarily hold the steel strip unwound from the steel coil 13. When the steel strip falls onto the lower belt guide plate 10, the permanent magnets under the lower belt guide plate 10 temporarily hold the steel strip and drive it to the pinch rollers of the starting machine 11.

[0033] Example 3

[0034] refer to Figure 1 Based on Example 1, a lower swing cylinder 8 is provided on the rear side of the lower belt guide plate 10.

[0035] The extended end of the lower swing cylinder 8 is hinged to the rear side of the lower belt guide plate 10. When the lower swing cylinder 8 extends, it can drive the lower belt guide plate 10 to swing upward, and when it retracts, it can drive the lower belt guide plate 10 to swing downward.

[0036] Example 4

[0037] refer to Figure 1 Based on Example 1, an upper swing cylinder 12 is provided on the rear side of the upper belt guide plate 13.

[0038] The extended end of the upper swing cylinder 12 is hinged to the rear side of the upper belt guide plate 13. When the upper swing cylinder 12 extends, it can drive the upper belt guide plate 13 to swing downward, and when it retracts, it can drive the upper belt guide plate 13 to swing upward.

[0039] Example 5

[0040] refer to Figure 1 Based on Example 1, a lifting cylinder 5 is provided at the lower part of the guide plate 6, and a guide plate swing cylinder 7 is provided at the end of the guide plate 6 facing the lower belt guide plate 10.

[0041] The guide plate 6 is initially in a low position, which does not affect the steel coil 13 being mounted on the drum of the uncoiler 1. When the lifting cylinder 5 extends upward, it can raise the guide plate 6 to the lower position of the steel coil 13. Then, the guide plate swing cylinder 7 can drive the rear end of the guide plate 6 to swing upward, so that the guide plate 6 is in the tangential direction of the steel coil 13 and aligned with the lower belt guide plate 10 behind it.

[0042] Example 6

[0043] refer to Figure 1 Based on embodiment 1, it also includes an upper winding trolley 4, an upper winding pressure roller 2 is provided on the upper winding trolley 4, and an upper winding lifting cylinder 3 is provided between the upper winding pressure roller 2 and the upper winding trolley 4.

[0044] When the upper winding lifting cylinder 3 extends upward, it can press the upper winding pressure roller 2 onto the lower part of the steel coil 13, preventing the steel strip head from retracting backward after the steel strip unfolds downward.

[0045] Example 7

[0046] An automatic uncoiling method for strip steel finishing mills, implemented using the strip steel finishing mill uncoiling device described in all the above embodiments, includes the following steps: S001: The upper coil trolley 4 feeds the steel coil 16 onto the drum of the uncoiler 1; S002: The upper belt guide plate 13 of the uncoiler 11 swings downward, pressing the steel coil 16 with the first pressure roller 14 or the second pressure roller 15, while the lower belt guide plate 10 of the uncoiler 11 swings upward toward the lower tangent of the steel coil 16; S003: The guide belt guide plate 6 rises and swings to a position between the lower tangent of the steel coil 16 and the lower belt guide plate 10; S004: The upper coil pressure roller 2 of the upper coil trolley 4 rises and presses against the lower part of the steel coil 16; S005 S006: The belts of the upper belt guide plate 13 and the lower belt guide plate 10 begin to rotate counterclockwise, and the drum of the uncoiler 1 drives the steel coil 16 to start rotating clockwise; S007: The lead of the steel coil 16 is thrown onto the lower belt guide plate 10 under the magnetic force of the magnet of the upper belt guide plate 13 and its own weight. At this time, the detection element 9 detects the lead signal, and the drum of the uncoiler 1, the upper belt guide plate 13 and the lower belt guide plate 10 stop running; S008: The drum of the uncoiler 1 drives the steel coil 16 to start rotating counterclockwise, and the belt of the lower belt guide plate 10 starts to rotate clockwise, introducing the lead of the steel coil 16 into the pinch roller of the initiator 11. The uncoiler 1 and the initiator 11 are linked and continue to feed backward.

[0047] In step S001, the automatic uncoiling preparation state is as follows: After the coil diameter is measured, the steel coil 16 is sent by the upper winding trolley 4 to the position of the coil 1 of the uncoiler 1; the upper winding trolley 4 is located directly below the steel coil 16, and the upper winding pressure roller 2 on the upper winding trolley 4 is in the falling position; the guide plate 6 is in the initial swing position; the lower belt guide plate 10 of the uncoiler 11 is in the swing position; the upper belt guide plate 13 of the uncoiler 11 is in the swing position; in step S002, the upper belt guide plate 13 of the uncoiler 11 is driven by the upper swing cylinder 12. The lower belt guide plate 10 of the starting machine 11 swings downward to its final position, pressing the steel coil 16 against the first pressure roller 14 or the second pressure roller 15 on the upper belt guide plate 13. Driven by the lower swing cylinder 8, the lower belt guide plate 10 of the starting machine 11 swings upward to its final position, calculated from the diameter of the steel coil 16, generally in the tangential direction. In step S003, the guide plate 6 rises to its final position under the drive of the lifting cylinder 5, calculated from the coil diameter. Simultaneously, driven by the guide plate swing cylinder 7, the rear end of the guide plate 6 moves towards... The upper swing reaches its position and aligns with the lower belt guide plate 10; in step S004, the saddle of the upper winding trolley 4 descends a certain distance, and the upper winding pressure roller 2 of the upper winding trolley 4 rises under the drive of the lifting cylinder 3 and presses against the lower part of the steel coil 16; in step S005, the belts of the upper belt guide plate 13 and the lower belt guide plate 10 of the uncoiler 1 begin to rotate counterclockwise, and the drum 1 of the uncoiler 1 drives the steel coil 16 to begin to rotate clockwise; in step S006, the head of the steel coil 16 is subjected to the magnetic force of the magnet of the upper belt guide plate 13. Under its own weight, the coil is thrown onto the lower belt guide plate 10 of the uncoiler 11. At this time, the detection element 9 detects the belt head signal, and the drum 1 of the uncoiler 1 and the upper belt guide plate 13 and the lower belt guide plate 10 all stop running. In step S007, the drum 1 of the uncoiler 1 drives the steel coil 16 to start rotating counterclockwise, and the belt of the lower belt guide plate 10 of the uncoiler 11 starts rotating clockwise, introducing the belt head of the steel coil 16 into the pinch roller of the uncoiler 11. The uncoiler 1 and the uncoiler 11 are linked and continue to feed backward.

[0048] Example 8

[0049] Based on embodiment 7, step S008 is also included: the upper winding trolley 4, the upper belt guide plate 13, the lower belt guide plate 10 and the guide belt guide plate 6 return to their initial positions during the feeding process, and the automatic unwinding ends.

[0050] In step S008, the upper winding lifting cylinder of the upper winding trolley 4 retracts downward, causing the upper winding pressure roller to disengage from the steel coil 16. The upper belt guide plate 13 of the starting machine 11 swings upward under the action of the retraction of the upper swing cylinder 12, disengaging from the steel coil 16. The lower belt guide plate 10 swings downward under the action of the retraction of the lower swing cylinder 8, disengaging from the steel strip of the steel coil 16. The guide plate swing cylinder 7 of the guide plate 6 retracts, causing the guide plate 6 to swing downward. At the same time, the lifting cylinder 5 retracts, causing the guide plate 6 to disengage from the steel strip.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. Components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and will not be described in detail here.

Claims

1. A method for automatic uncoiling of strip coils in a strip finishing mill, implemented using a strip coil uncoiling device in a strip finishing mill, characterized in that... The strip finishing mill's uncoiling device includes: Uncoiler (1), on which a steel coil (16) is mounted; The uncoiler (11) is located directly behind the uncoiler (1). The uncoiler (1) has an upper belt guide plate (13) and a lower belt guide plate (10) hinged to its front side. The upper belt guide plate (13) has a first pressure roller (14) and a second pressure roller (15) arranged side by side. The lower belt guide plate (10) has a detection element (9). Guide belt (6), the guide belt (6) is disposed at the rear lower part of the uncoiler (1) and located between the lower part of the steel coil (16) and the lower belt guide plate (10); The strip finishing unit also includes an upper winding trolley (4), on which an upper winding pressure roller (2) is provided, and an upper winding lifting cylinder (3) is provided between the upper winding pressure roller (2) and the upper winding trolley (4). The automatic uncoiling method for strip steel finishing mills includes the following steps: S001: The coiling trolley (4) feeds the steel coil (16) onto the drum of the uncoiler (1); S002: The upper belt guide plate (13) of the starting machine (11) swings downward and presses the steel coil (16) with the first pressure roller (14) or the second pressure roller (15), while the lower belt guide plate (10) of the starting machine (11) swings upward toward the lower tangent of the steel coil (16). S003: The guide plate (6) rises and swings to the lower tangent of the steel coil (16) between the lower belt guide plate (10); S004: The upper winding pressure roller (2) of the upper winding trolley (4) rises and presses against the lower part of the steel coil (16); S005: The belts of the upper belt guide plate (13) and the lower belt guide plate (10) begin to rotate counterclockwise, and the drum of the uncoiler (1) drives the steel coil (16) to start rotating clockwise; S006: The lead of the steel coil (16) is thrown onto the lower belt guide plate (10) by the magnetic force of the magnet of the upper belt guide plate (13) and its own weight. At this time, the detection element (9) detects the lead signal, and the drum of the uncoiler (1), the upper belt guide plate (13) and the lower belt guide plate (10) stop running. S007: The uncoiler (1) drives the steel coil (16) to start rotating counterclockwise, and the belt of the lower belt guide plate (10) starts rotating clockwise, introducing the head of the steel coil (16) into the pinch roller of the starting machine (11). The uncoiler (1) and the starting machine (11) work together to continue feeding backward.

2. The automatic uncoiling method for strip steel finishing mills according to claim 1, characterized in that, Both the lower belt guide plate (10) and the upper belt guide plate (13) are driven by a motor, and permanent magnets are provided under the belts.

3. The automatic uncoiling method for strip steel finishing mills according to claim 1, characterized in that, A downward swing cylinder (8) is provided on the rear side of the lower belt guide plate (10).

4. The automatic uncoiling method for strip steel finishing mills according to claim 1, characterized in that, An upper swing cylinder (12) is provided on the rear side of the upper belt guide plate (13).

5. The automatic uncoiling method for strip steel finishing mills according to claim 1, characterized in that, A lifting cylinder (5) is provided at the lower part of the guide plate (6), and a guide plate swing cylinder (7) is provided at one end of the guide plate (6) facing the lower belt guide plate (10).

6. The automatic uncoiling method for strip steel finishing mills according to claim 1, characterized in that, It also includes step S008: the upper winding trolley (4), the upper belt guide plate (13), the lower belt guide plate (10) and the guide belt guide plate (6) return to their initial positions during the feeding process, and the automatic unwinding ends.

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