A reel having switchable jaw diameter increasing sleeves

Abstract

The present application relates to the technical field of metal coil processing, and particularly relates to a winding drum with switchable jaw diameter increasing sleeve, comprising a diameter increasing sleeve and a winding drum, the diameter increasing sleeve comprises a sleeve body, a first jaw sector plate, a first jaw strip, a first top block and a positioning block; the winding drum comprises a drum body, a second jaw sector plate, a second jaw strip and a second top block; the high-low jaw switching method of the winding drum is as follows: the sleeve body is installed on the outside of the drum body through bolts, the winding drum is adjusted to the maximum opening state, the second jaw sector plate is disassembled and the second top block is pulled out, the first top block is then installed into the dovetail groove, and the first jaw sector plate is then clamped into the positioning groove; the first jaw depth formed between the first jaw sector plate and the first top block is the same as the second jaw depth formed between the second jaw sector plate and the second top block. The present application sets an independently switchable jaw on the diameter increasing sleeve, reduces the depth of the steel plate extending into the jaw of the winding drum, and makes the high-strength steel plate not easily stuck in the jaw, thereby facilitating the unloading of the steel coil.

Description

Technical Field

[0001] This invention relates to the field of metal coil processing technology, and in particular to a coil with a switchable jaw diameter-increasing sleeve. Background Technology

[0002] In the finishing units of thin and medium-thick plate slitting lines, the coiler's function is to coil various hot-rolled or cold-rolled steels into coils of specific sizes and specifications using a drum. The drum is equipped with jaws to clamp the ends of the steel plates, and the coils are wound according to a set tension value. With the development of the national economy, some high-strength plates and even ultra-high-strength plates (yield strength above 1200M) have gradually begun to be used. In order to ensure that the finished coils are neat and have small misalignment deviations, these high-strength steel plates require high-tension, high-rigidity drums, and the clamping force required by the jaws must also be greater than that of ordinary plates.

[0003] The outer diameter of the coiler drum is the inner diameter of the finished coil. Depending on the type of steel (cold-rolled plate, hot-rolled plate, pickled plate, etc.) and the industry, the inner diameter of steel coils is typically divided into three types (φ508, φ610, and φ760 mm), with φ508 being the most common. Therefore, the diameter of the coiler drum is also φ508. When a φ508 drum needs to be used to wind finished coils with an inner diameter of φ610 or φ760, an expanding sleeve needs to be installed on the drum surface. There are also solutions in the industry that directly replace the drum, but the coiler drum structure is complex and costly. Replacing the drum when production capacity is insufficient increases the complexity of the slitting line unit.

[0004] After the steel coil is wound on the drum, ensuring smooth unwinding without scratches on the inner layer is a crucial process in the entire production line. During unwinding, the drum contracts, the jaws open, and the unloading trolley carries the steel coil along the jaws from the side. Because the steel strip undergoes elastic-plastic deformation when clamped and bent at the jaws, a certain rebound force is generated upon release. Existing diameter-enhancing sleeves, because they are directly fitted onto the outside of the drum (e.g., ...), ... Figure 1 This results in the new jaw length of the drum after the expansion sleeve is applied being equal to the sum of the original drum jaw L1 (84mm) and the expansion sleeve jaw L2 (77mm) (171mm). When the steel plate 16 extends into the new jaw, the distance is too long (171mm). When encountering pickled plates or stainless steel plates with high yield strength, the plate head may rebound and press against the upper jaw surface 24 during unloading. This often causes jamming and uneven discharge during use, resulting in excessive misalignment of the inner ring of the steel coil and scratching of the plate surface. Summary of the Invention

[0005] This invention solves the problems in related technologies and proposes a drum with a switchable jaw diameter-increasing sleeve. The diameter-increasing sleeve is provided with an independent switchable jaw, which reduces the depth of the steel plate into the drum jaw, making it less likely for the high-strength steel plate to get stuck in the jaw and facilitating the unloading of the steel coil.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a reel with a switchable jaw diameter-increasing sleeve, comprising a diameter-increasing sleeve and a reel, wherein the diameter-increasing sleeve comprises a sleeve body, a first jaw sector plate, a first jaw bar, a first top block, and a positioning block; the sleeve body is provided with an opening, and a vertical plate is detachably installed on one side of the opening; the positioning block is detachably installed on the sleeve body; and the first jaw bar is detachably installed on the first top block; the reel comprises a cylinder body, a second jaw sector plate, a second jaw bar, and a second top block; the second jaw sector plate, the second jaw bar ... The top block is detachably installed on the cylinder body, and the second jaw strip is detachably installed on the second top block. The method for switching the high and low jaws of the drum is as follows: the sleeve is installed on the outside of the cylinder body by bolts, the drum is adjusted to the maximum expansion state, the second jaw sector plate is removed and the second top block is pulled out, then the first top block is installed into the dovetail groove and locked with the screws, and then the first jaw sector plate is inserted into the positioning groove and fixed with screws. The first jaw depth formed between the first jaw sector plate and the first top block is the same as the second jaw depth formed between the second jaw sector plate and the second top block.

[0007] As a preferred embodiment, the sleeve includes an outer ring sector plate, a first inner ring sector plate, a second inner ring sector plate, and a third inner ring sector plate, wherein the first inner ring sector plate, the second inner ring sector plate, and the third inner ring sector plate are distributed on the inner side of the outer ring sector plate.

[0008] As a preferred embodiment, the first jaw fan-shaped plate has a first groove on the side near the first top block, and the first jaw bar has a first tip on the side near the first groove; the second jaw fan-shaped plate has a second groove on the side near the second top block, and the second jaw bar has a second tip on the side near the second groove.

[0009] As a preferred embodiment, the cylinder includes a first sector plate, a second sector plate, and a third sector plate. A fourth oblique wedge is provided between each of the first, second, and third sector plates. A second oblique wedge is provided on the side of the fourth oblique wedge near the main shaft, and the second oblique wedge can slide within the long groove of the main shaft. A third oblique wedge and a first oblique wedge are sequentially provided on the side of the second top block near the main shaft. The second top block and the third oblique wedge are connected by a dovetail structure. The angle of the first oblique wedge is greater than the angle of the second oblique wedge.

[0010] As a preferred embodiment, the drum further includes a hydraulic cylinder, a pull rod, and a disc spring. The hydraulic cylinder is connected to the pull rod, the pull rod extends into the main shaft, and the disc spring is mounted on the first sector plate, the second sector plate, and the third sector plate.

[0011] As a preferred embodiment, the hydraulic cylinder drives the pull rod to move the main shaft, thereby causing the second wedge to slide within the long groove of the main shaft. The second wedge drives the fourth wedge to expand outward, which in turn causes the first, second, and third sector plates to expand outward, thus achieving the expansion of the drum, at which time the disc spring is compressed. By reversing the hydraulic cylinder, the disc spring releases the pressure, causing the first, second, and third sector plates to retract towards the axis, thus achieving the contraction action.

[0012] As a preferred embodiment, the hydraulic cylinder drives the tie rod to move the main shaft, thereby causing the first wedge to slide in the long groove of the main shaft. The first wedge drives the third wedge to push upward, thereby causing the first jaw bar or the second jaw bar to move upward. The first jaw bar is in contact with the first jaw sector plate or the second jaw bar is in contact with the second jaw sector plate, thereby clamping the steel plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) Set independent switchable jaws on the diameter-increasing sleeve to reduce the depth of the steel plate into the drum jaws, so that the high-strength steel plate is not easily stuck in the jaws and the steel coil is easy to unload.

[0015] (2) Both the first and second top blocks are equipped with jaw bars, which can save switching time;

[0016] (3) The steel plate is bent at a certain small angle under the action of the tip of the jaw and the groove of the jaw fan-shaped plate, which increases the friction coefficient between the steel plate and the jaw surface, improves the clamping force of the jaw, and reduces the rebound of the high-strength plate head. The effect is particularly significant when clamping multiple plate heads, which can make up for the processing error of the jaw surface of the fan-shaped plate.

[0017] (4) The angle of the first wedge is greater than that of the second wedge. The wedge angle determines the travel distance. That is, the travel distance of the second top block at the jaw is greater than that of the first sector plate. The difference between the two travel distances is the opening travel distance of the drum jaw. By setting a certain angle, a larger opening travel distance can be achieved, which is conducive to the smooth unloading of the steel coil from the drum. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the existing technology of a diameter-enlarging sleeve fitted onto a drum (in a taut state);

[0019] Figure 2 This is a schematic diagram of the existing technology of a diameter-increasing sleeve fitted onto a drum (in the contracted state);

[0020] Figure 3 This is a schematic diagram of the diameter-increasing sleeve of the present invention;

[0021] Figure 4 This is the present invention. Figure 3Enlarged view of point A in the middle;

[0022] Figure 5 This is the present invention. Figure 3 View from direction B;

[0023] Figure 6 This is a schematic diagram of the structure of the roll of the present invention;

[0024] Figure 7 This is the present invention. Figure 6 Enlarged view of point C in the middle;

[0025] Figure 8 This is a schematic diagram of the structure of the present invention after adding a diameter-increasing sleeve to the roll;

[0026] Figure 9 This is a schematic diagram of the opening of the reel-shrinking jaws of the present invention;

[0027] Figure 10 This is the present invention. Figure 9 Enlarged view at point D;

[0028] Figure 11 This is a schematic diagram of the structure of the roll drive end of the present invention.

[0029] In the picture:

[0030] 1. Outer ring sector plate; 2. First jaw sector plate; 3. First jaw bar; 4. First top block; 5. Vertical plate; 6. Positioning block; 7. First inner ring sector plate; 801. Second inner ring sector plate; 802. Third inner ring sector plate; 9. Main shaft; 10. First oblique wedge; 11. Third sector plate; 12. Second jaw sector plate; 13. Second jaw bar; 14. Second top block; 15. Third oblique wedge; 16. Steel plate; 17. First sector plate; 18. Fourth oblique wedge; 19. Second oblique wedge; 20. Tie rod; 21. Disc spring; 22. Second sector plate; 23. Hydraulic cylinder; 24. Upper jaw surface. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0037] like Figures 1 to 11 As shown, a reel with a switchable jaw diameter-increasing sleeve includes a diameter-increasing sleeve and a reel. The diameter-increasing sleeve includes a sleeve body, a first jaw sector plate 2, a first jaw bar 3, a first top block 4, and a positioning block 6. The sleeve body has an opening, and a vertical plate 5 is detachably installed on one side of the opening. The vertical plate 5 is used for the up-and-down sliding of the first top block 4 and has high installation accuracy requirements. The positioning block 6 is detachably installed on the sleeve body and determines the installation reference. The first jaw bar 3 is detachably installed on the first top block 4. The reel includes a cylinder body, a second jaw sector plate 12, a second jaw bar 13, and a second top block 14. The second jaw sector plate 12 and the second top block 14 are detachably installed on the cylinder body, and the second jaw bar 13 is detachably installed on the cylinder body. The disassembly and installation are performed on the second top block 14. The method for switching the high and low jaws of the drum is as follows: The sleeve is installed on the outside of the drum body by bolts. The drum is adjusted to the maximum expansion state. The second jaw sector plate 12 is removed and the second top block 14 is pulled out. Then the first top block 4 is installed into the dovetail groove and locked with the screws. Then the first jaw sector plate 2 is inserted into the positioning groove and fixed with screws. At this time, the first jaw is formed between the first jaw sector plate 2 and the first top block 4. The depth L2 of the first jaw is the same as that of the second jaw formed between the original second jaw sector plate 12 and the second top block 14, which is 48mm. This is much smaller than the previous depth of 171mm, so that the steel plate 16 is not easily stuck at the jaw and the steel coil is easy to unload.

[0038] In one embodiment, the sleeve includes an outer ring sector plate 1, a first inner ring sector plate 7, a second inner ring sector plate 801, and a third inner ring sector plate 802. The first inner ring sector plate 7, the second inner ring sector plate 801, and the third inner ring sector plate 802 are distributed inside the outer ring sector plate 1, wherein the opening is located on the outer ring sector plate and the first inner ring sector plate 7.

[0039] In addition, such as Figure 3 and 5 As shown, the outer ring sector plate 1, the first inner ring sector plate 7, the second inner ring sector plate 801, and the third inner ring sector plate 802 of the diameter-increasing sleeve are welded steel plate structures with internal reinforcing ribs. After welding, they are annealed. During the first machining, a cutting allowance is left on the outer circle. The first jaw sector plate 2 and the first top block 4 are alloy steel forgings. After the sector plates and top blocks are assembled into a whole circle on the drum, they are machined as a whole for secondary machining to ensure accuracy. The edges of the sector plates adopt a sawtooth structure to interlock with each other to form a seamless drum, which effectively prevents the thin plate from having creases or scratches at the joint.

[0040] In one embodiment, such as Figure 4 As shown, a first groove 201 is formed on the side of the first jaw fan-shaped plate 2 near the first top block 4, and a first tip 301 is formed on the side of the first jaw bar 3 near the first groove 201; as Figure 7 As shown, a second groove 1201 is formed on the side of the second jaw fan-shaped plate 12 near the second top block 14, and a second tip 1301 is formed on the side of the second jaw bar 13 near the second groove 1201. Under the action of the first tip 301 (second tip 1301) and the first groove 201 (second groove 1201), the steel plate 16 is bent at a certain small angle, which increases the friction coefficient between the steel plate 16 and the jaw surface, improves the clamping force of the jaw, and reduces the rebound of the high-strength plate head. The effect is particularly significant when clamping multiple plate heads, and can compensate for the processing error of the fan-shaped plate jaw surface.

[0041] In one embodiment, the cylinder includes a first sector plate 17, a second sector plate 22, and a third sector plate 11. A fourth oblique wedge 18 is provided between each of the first sector plate 17, the second sector plate 22, and the third sector plate 11. A second oblique wedge 19 is provided on the side of the fourth oblique wedge 18 near the main shaft 9, and the second oblique wedge 19 can slide within the elongated groove of the main shaft 9. The side of the second oblique wedge 19 with the oblique wedge structure is adjacent to the side of the fourth oblique wedge 18 with the oblique wedge structure. A third oblique wedge 15 is sequentially provided on the side of the second top block 14 near the main shaft 9. The first oblique wedge 10, the third oblique wedge 15, and the oblique wedge 10 are adjacent to each other on the side with the oblique wedge structure. The second top block 14 is connected to the third oblique wedge 15 by a dovetail structure. The oblique angle of the first oblique wedge 10 is greater than the oblique angle of the second oblique wedge 19. The oblique wedge angle determines the movement stroke, that is, the rising and falling stroke of the second top block 14 at the jaw is greater than the rising and falling stroke of the first sector plate 17. The difference in stroke between the two is the opening stroke of the drum jaw. By setting a certain angle, a larger opening stroke can be achieved. Figure 10 The L in the figure facilitates the smooth unloading of the steel coil from the drum (the jaw stroke of the expanding sleeve is equal to the jaw stroke of the drum).

[0042] In one embodiment, the drum further includes a hydraulic cylinder 23, a pull rod 20, and a disc spring 21. The hydraulic cylinder 23 is connected to the pull rod 20, which extends into the main shaft 9. The disc spring 21 is mounted on the first sector plate 17, the second sector plate 22, and the third sector plate 11.

[0043] In one embodiment, the hydraulic cylinder 23 drives the pull rod 20 to move the main shaft 9, thereby causing the second wedge 19 to slide in the long groove of the main shaft 9. The second wedge 19 drives the fourth wedge 18 to expand outward, which in turn drives the first sector plate 17, the second sector plate 22, and the third sector plate 11 to expand outward, realizing the expansion of the drum. At this time, the disc spring 21 is compressed. By reversing the hydraulic cylinder 23, the disc spring 21 releases the pressure and retracts the first sector plate 17, the second sector plate 22, and the third sector plate 11 towards the axis, realizing the contraction action.

[0044] In one embodiment, the hydraulic cylinder 23 drives the pull rod 20 to move the main shaft 9, thereby causing the first wedge 10 to slide in the long groove of the main shaft 9. The first wedge 10 drives the third wedge 15 to push upward, thereby causing the first jaw bar 3 (jaw switching) or the second jaw bar 13 (jaw not switching) to move upward. The first jaw bar 3 is in contact with the first jaw sector plate 2 (jaw switching) or the second jaw bar 13 is in contact with the second jaw sector plate 12 (jaw not switching) to clamp the steel plate 16.

[0045] This invention is applicable to the clamping and coiling of high-strength steel plates such as cold-rolled high-strength plates, hot-rolled plates, stainless steel, and pickled plates with a thickness range of 0.5-6mm.

[0046] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. A reel with a switchable jaw diameter-increasing sleeve, characterized in that: The device includes an increasing diameter sleeve and a drum. The increasing diameter sleeve comprises a sleeve body, a first jaw sector plate, a first jaw bar, a first top block, and a positioning block. The sleeve body has an opening, and a vertical plate is detachably mounted on one side of the opening, with the vertical plate used for the vertical sliding of the first top block. The positioning block is detachably mounted on the sleeve body, and the first jaw bar is detachably mounted on the first top block. The drum comprises a drum body, a second jaw sector plate, a second jaw bar, and a second top block. The second jaw sector plate and the second top block are detachably mounted on the drum body. The second jaw strip is detachably installed on the second top block; the method for switching the high and low jaws of the drum is as follows: the sleeve is installed on the outside of the drum body by bolts, the drum is adjusted to the maximum expansion state, the second jaw sector plate is removed and the second top block is pulled out, then the first top block is installed into the dovetail groove and locked with the screws, and then the first jaw sector plate is inserted into the positioning groove and fixed with screws. The first jaw depth formed between the first jaw sector plate and the first top block is the same as the second jaw depth formed between the second jaw sector plate and the second top block.

2. The drum with a switchable jaw diameter-increasing sleeve according to claim 1, characterized in that: The sleeve includes an outer ring sector plate, a first inner ring sector plate, a second inner ring sector plate, and a third inner ring sector plate, with the first inner ring sector plate, the second inner ring sector plate, and the third inner ring sector plate distributed inside the outer ring sector plate.

3. The drum with a switchable jaw diameter-increasing sleeve according to claim 1, characterized in that: The first jaw fan-shaped plate has a first groove on the side near the first top block, and the first jaw bar has a first tip on the side near the first groove; the second jaw fan-shaped plate has a second groove on the side near the second top block, and the second jaw bar has a second tip on the side near the second groove.

4. The drum with a switchable jaw diameter-increasing sleeve according to claim 1, characterized in that: The cylinder includes a first sector plate, a second sector plate, and a third sector plate. A fourth oblique wedge is provided between each of the first, second, and third sector plates. A second oblique wedge is provided on the side of the fourth oblique wedge near the main shaft, and the second oblique wedge can slide within the long groove of the main shaft. A third oblique wedge and a first oblique wedge are sequentially provided on the side of the second top block near the main shaft. The oblique wedge and the first oblique wedge are adjacent on the side with the oblique wedge structure. The second top block and the third oblique wedge are connected by a dovetail structure. The oblique angle of the first oblique wedge is greater than the oblique angle of the second oblique wedge.

5. The drum with a switchable jaw diameter-increasing sleeve according to claim 4, characterized in that: The drum also includes a hydraulic cylinder, a pull rod, and a disc spring. The hydraulic cylinder is connected to the pull rod, which extends into the main shaft. The disc spring is mounted on the first sector plate, the second sector plate, and the third sector plate.

6. The reel with a switchable jaw diameter-increasing sleeve according to claim 5, characterized in that: The hydraulic cylinder drives the pull rod to move the main shaft, causing the second wedge to slide within the long groove of the main shaft. The second wedge drives the fourth wedge to expand outward, which in turn expands the first, second, and third sector plates outward, thus expanding the drum and compressing the disc spring. The hydraulic cylinder then reverses its movement, releasing the pressure of the disc spring and retracting the first, second, and third sector plates towards the axis, thus retracting the drum.

7. The drum with a switchable jaw diameter-increasing sleeve according to claim 5, characterized in that: The hydraulic cylinder drives the tie rod to move the main shaft, thereby causing the first wedge to slide in the long groove of the main shaft. The first wedge drives the third wedge to push upward, thereby causing the first jaw bar or the second jaw bar to move upward. The first jaw bar is in contact with the first jaw sector plate or the second jaw bar is in contact with the second jaw sector plate, thereby clamping the steel plate.

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