Uncoiler

Abstract

The utility model relates to an uncoiler which comprises a machine table and a coiling block arranged on the machine table, the coiling block comprises a plurality of fan-shaped plates and an expansion and contraction driving mechanism used for driving the fan-shaped plates to synchronously move in the radial direction to achieve expansion and contraction, when the coiling block is in the diameter shrinkage state, the fan-shaped plates are distributed in a small circle mode, and when the coiling block is in the diameter expansion state, the fan-shaped plates are distributed in a small circle mode. The fan-shaped plates are distributed in a large circle, an avoiding hole is formed in the machine table, parts of the fan-shaped plates are located in the machine table, parts of the fan-shaped plates extend out of the table top of the machine table through the avoiding hole, and the diameter of the avoiding hole is the same as that of the large circle. According to the coiling block and the uncoiling machine, the avoiding holes are formed in the machine table, the fan-shaped plates make contact with the machine table in the diameter expansion state of the coiling block, acting force borne by the fan-shaped plates can be transmitted to the machine table more reliably, the application reliability of the coiling block and the uncoiling machine is guaranteed, and the service life of the coiling block and the uncoiling machine is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical equipment, and particularly relates to a decoiler. Background Art

[0002] A decoiler is an important equipment in metallurgical production. The coil is supported by the reel on the decoiler and driven to rotate by the reel to realize decoiling. The reel used in the decoiler generally includes multiple segment plates. The diameter expansion and contraction of the reel are realized through the synchronous movement of the multiple segment plates, and it can be applicable to coils with different inner diameters. Since the reel supports the coil in a cantilever form, it needs to bear large shear force and bending moment, and is prone to fatigue damage, resulting in reduced service life of the reel and the decoiler. Content of the Utility Model

[0003] The utility model relates to a decoiler, which can at least solve some defects of the prior art.

[0004] The utility model relates to a decoiler, including a machine platform and a reel arranged on the machine platform. The reel includes multiple segment plates and a diameter expansion and contraction driving mechanism for driving each segment plate to move synchronously in the radial direction to realize expansion and contraction. When the reel is in a diameter-reduced state, each segment plate is distributed in a small circle. When the reel is in a diameter-expanded state, each segment plate is distributed in a large circle. An avoidance hole is formed on the machine platform. Part of the segment plate is located inside the machine platform, and part of it extends out of the machine platform surface through the avoidance hole. The diameter of the avoidance hole is the same as the diameter of the large circle.

[0005] As one of the implementation manners, the reel is rotatably installed on the machine platform, and a rotation driving mechanism for driving the reel to rotate is arranged on the machine platform, and the rotation driving mechanism is accommodated in the machine platform.

[0006] As one of the implementation manners, the rotation driving mechanism includes a driving motor, a driving gear and a transmission gear. The driving motor is installed on the machine platform, the driving gear is installed on the output shaft of the driving motor, the transmission gear is installed on the reel, and the transmission gear meshes with the driving gear.

[0007] As one of the implementation manners, the diameter expansion and contraction driving mechanism includes a frustum sleeve and a diameter expansion and contraction driving structure for driving the frustum sleeve to move axially along itself. The frustum sleeve has multiple driving inclined plane groups, the number of the driving inclined plane groups is the same as that of the segment plates and they are in one-to-one correspondence and cooperation. Each driving inclined plane group includes multiple driving inclined planes distributed in sequence along the axial direction of the frustum sleeve, and multiple driving receiving inclined planes which are wedge-shapedly matched with the driving inclined planes are arranged on the segment plate.

[0008] As one of the implementation manners, the expansion and contraction driving structure includes a hollow main shaft, a pull rod, and an expansion and contraction power unit. The pyramid sleeve is sleeved on the hollow main shaft and can move axially along the hollow main shaft. The pull rod is movably arranged in the shaft cavity of the hollow main shaft, and one end of the pull rod extends out of the hollow main shaft and is connected to the expansion and contraction power unit.

[0009] As one of the implementation manners, the hollow main shaft includes a first shaft section located inside the machine table and a second shaft section extending out of the machine table surface through an avoidance hole. A support bearing is arranged inside the machine table, and the first shaft section is matched with the support bearing.

[0010] As one of the implementation manners, the hollow main shaft and the expansion and contraction power unit are flange-connected, and the output shaft of the expansion and contraction power unit is connected to the pull rod through a coupling.

[0011] As one of the implementation manners, the pyramid sleeve and the pull rod are connected by a flat pin.

[0012] The utility model has at least the following beneficial effects: In the utility model, by arranging an avoidance hole on the machine table, when the reel is in the expanded diameter state, the sector plate contacts the machine table, and the acting force received by the sector plate can be more reliably transmitted to the machine table, ensuring the application reliability of the above-mentioned reel and uncoiler, and improving the service life of the reel and uncoiler. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is an assembly schematic diagram of the reel and the machine table provided by the embodiment of the present utility model;

[0015] Figure 2 and Figure 3 They are respectively schematic diagrams of the machine table in the receiving coil position and the turning coil position;

[0016] Figure 4 It is a structural schematic diagram of the reel provided by the embodiment of the present utility model. Detailed Embodiments

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] As Figures 1-3 , an uncoiler provided by an embodiment of the present utility model includes a machine table 101 and a reel 2 disposed on the machine table 101. The reel 2 includes a plurality of sector plates 201 and a telescopic drive mechanism for driving each sector plate 201 to move synchronously in the radial direction to achieve expansion and contraction. When the reel 2 is in a reduced diameter state, each sector plate 201 is distributed in a common small circle (the diameter of this small circle is R1). When the reel 2 is in an expanded diameter state, each sector plate 201 is distributed in a common large circle (the diameter of this large circle is R2). An avoidance hole is formed on the machine table 101. A part of the sector plate 201 is located inside the machine table 101, and a part extends out of the tabletop of the machine table 101 through the avoidance hole. The diameter of the avoidance hole is the same as the large circle diameter R2.

[0019] In this embodiment, by providing an avoidance hole on the machine table 101, when the reel 2 is in an expanded diameter state, the sector plate 201 is in contact with the machine table 101, and the force received by the sector plate 201 can be more reliably transmitted to the machine table 101, ensuring the application reliability of the above-mentioned reel 2 and uncoiler, and improving the service life of the reel 2 and uncoiler.

[0020] In one of the embodiments, as Figure 4 , the telescopic drive mechanism includes a pyramid sleeve 202 and a telescopic drive structure for driving the pyramid sleeve 202 to move axially along itself. The pyramid sleeve 202 has a plurality of drive inclined plane groups. The number of drive inclined plane groups is the same as that of the sector plates 201 and they are in one-to-one correspondence and cooperation. Each drive inclined plane group includes a plurality of drive inclined planes 207 distributed in sequence along the axial direction of the pyramid sleeve 202. A plurality of receiving drive inclined planes that are wedge-fitted with the respective drive inclined planes 207 are provided on the sector plate 201. When the pyramid sleeve 202 moves axially along itself, based on the wedge-fitting relationship between each drive inclined plane 207 and each receiving drive inclined plane, each sector plate 201 can be moved synchronously in the radial direction to achieve the purpose of expanding and contracting the reel 2.

[0021] Optionally, the number of the sector plates 201 is four, and the pyramid sleeve 202 correspondingly has four drive inclined plane groups.

[0022] As a preferred solution, as Figure 4, the above-mentioned expansion and contraction driving structure includes a hollow main shaft 203, a pull rod 204 and an expansion and contraction power unit 205. The above-mentioned pyramid sleeve 202 is sleeved on the hollow main shaft 203 and can move axially along the hollow main shaft 203. The pull rod 204 is movably arranged in the shaft cavity of the hollow main shaft 203. One end of the pull rod 204 extends out of the hollow main shaft 203 and is connected to the expansion and contraction power unit 205, so as to be able to move axially in the hollow main shaft 203. The pyramid sleeve 202 is fixedly connected to the pull rod 204, so that the pull rod 204 can drive the pyramid sleeve 202 to move axially.

[0023] Preferably, a limiting structure is provided on the hollow main shaft 203 for restricting the relative rotation between the pyramid sleeve 202 and the hollow main shaft 203, including but not limited to the following structures: at least one sliding key is provided between the pyramid sleeve 202 and the hollow main shaft 203.

[0024] Optionally, the pyramid sleeve 202 and the pull rod 204 are connected by a flat pin 206. An activity window can be correspondingly opened on the hollow main shaft 203. The flat pin 206 passes through the activity window and is respectively connected to the pyramid sleeve 202 and the pull rod 204. Among them, the length of the activity window in the axial direction of the hollow main shaft 203 should not be less than the activity stroke of the pull rod 204.

[0025] The above-mentioned expansion and contraction power unit 205 can adopt linear drive devices such as hydraulic cylinders and air cylinders. Optionally, a detachable fixed connection form such as a flange connection structure 210 can be adopted between the above-mentioned hollow main shaft 203 and the expansion and contraction power unit 205; the output shaft of the expansion and contraction power unit 205 can be connected to the above-mentioned pull rod 204 through a coupling 211.

[0026] In one of the embodiments, as Figure 4, a positioning plate 208 is provided at the cantilever end of the hollow main shaft 203. The plate surface of the positioning plate 208 is perpendicular to the axis of the hollow main shaft 203. A plurality of positioning blocks protrude from the periphery of the positioning plate 208. Positioning holes are provided on the sector plate 201 in a matching manner. The number of positioning blocks is the same as that of the sector plate 201 and they are arranged in one-to-one correspondence. Each positioning block is inserted into the corresponding positioning hole and the two are in guiding cooperation (the guiding direction is obviously parallel to the radial movement direction of the sector plate 201). Among them, the protruding length of the positioning block ensures that it is still in guiding cooperation with the positioning hole under the expanded diameter state of the reel 2. Based on the above design, the movement of the sector plate 201 can be limited to the radial direction, ensuring the reliability of the expansion and contraction of the reel 2. In particular, the positioning plate 208 is detachably fixed to the hollow main shaft 203. When the connection between the positioning plate 208 and the hollow main shaft 203 is released, the positioning plate 208 and each sector plate 201 can be removed from the hollow main shaft 203, facilitating the disassembly, assembly and maintenance of the sector plate 201 and the reel 2. The positioning plate 208 is preferably installed on the hollow main shaft 203 by fastening screws 209, etc. Since the positioning plate 208 is fixed to the hollow main shaft 203, the fastening screw 209 will not bear axial tension during the expansion and contraction of the reel 2. Therefore, reliable structural stability of the positioning plate 208 and guiding effect on the sector plate 201 can be obtained.

[0027] The above-mentioned hollow main shaft 203 is the main load-bearing member of the reel 2. Preferably, as Figure 2 and Figure 3 , the hollow main shaft 203 includes a first shaft section located inside the machine table 101 and a second shaft section extending out of the table surface of the machine table 101 through an avoidance hole; a support bearing is provided inside the machine table 101, and the first shaft section is matched with the support bearing. Based on this design, the structural stability and working reliability of the hollow main shaft 203 and the reel 2 can be improved.

[0028] Preferably, the reel 2 is rotatably installed on the machine table 101. A rotation driving mechanism for driving the reel 2 to rotate is provided on the machine table 101, and the rotation driving mechanism is housed inside the machine table 101. Optionally, as Figure 2 , the rotation driving mechanism includes a driving motor 106, a driving gear 107 and a transmission gear 108. The driving motor 106 is installed on the machine table 101, the driving gear 107 is installed on the output shaft of the driving motor 106, the transmission gear 108 is installed on the reel 2 (that is, installed on the above-mentioned hollow main shaft 203), and the transmission gear 108 meshes with the driving gear 107; among them, the axis of the transmission gear 108 is parallel to the axis of the reel 2, and further preferably coaxially arranged. The above-mentioned driving motor 106, driving gear 107 and transmission gear 108 are all preferably arranged inside the machine table 101 to avoid interfering with the steel coil placed on the table surface.

[0029] In one of the embodiments, as Figures 1-3, the above uncoiler further includes a flipping drive mechanism 109. The machine table 101 is connected to the flipping drive mechanism 109 so as to have a coil receiving position and a coil flipping position. At the coil receiving position, the tabletop of the machine table 101 is parallel to the horizontal plane. At the coil flipping position, the tabletop of the machine table 101 is parallel to the vertical direction. Based on this structure, the machine table 101 can receive coils vertically (or horizontally) and unwind coils horizontally, improving the working flexibility and reliability of the uncoiler.

[0030] Among them, a fixed base 102 can be further provided. The fixed base 102 is used to be installed on the workshop foundation. The above machine table 101 is rotatably installed on the fixed base 102. Driven by the flipping drive mechanism 109, the machine table 101 rotates relative to the fixed base 102, so that the switching between the coil receiving position and the coil flipping position can be realized.

[0031] Preferably, the machine table 101 is provided with feet. When the machine table 101 is in the coil flipping position, the feet just support on the workshop foundation, which can improve the structural stability and working reliability of the machine table 101.

[0032] The flipping drive mechanism 109 includes but is not limited to using a flipping hydraulic cylinder. Taking the flipping hydraulic cylinder as an example, the cylinder body is hinged and installed on the workshop foundation, and the output end is hinged to the machine table 101.

[0033] Preferably, the driving point 104 of the machine table 101 and the rotating point 103 of the machine table 101 are relatively arranged on both sides of the axis of the reel 2. Among them, the driving point 104 is the connection point between the flipping drive mechanism 109 and the machine table 101, and the rotating point 103 is the hinge point between the machine table 101 and the fixed base 102. This can improve the stability and safety of the machine table 101 and the flipping of the steel coil.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An uncoiler, comprising a machine platform and a reel mounted on the machine platform, wherein the reel comprises a plurality of sector plates and an expansion and contraction drive mechanism for driving the sector plates to move synchronously in a radial direction to achieve expansion and contraction, wherein when the reel is in a reduced diameter state, the sector plates are distributed in a small circle, and when the reel is in an expanded diameter state, the sector plates are distributed in a large circle, and wherein: The machine platform is provided with an avoidance hole, the fan-shaped plate is partially located inside the machine platform and partially extends out of the machine platform surface through the avoidance hole, and the diameter of the avoidance hole is the same as the diameter of the large circle.

2. The uncoiler according to claim 1, characterized in that: The reel is rotatably mounted on the platform, and a rotation driving mechanism for driving the reel to rotate is provided on the platform, and the rotation driving mechanism is accommodated in the platform.

3. The uncoiler according to claim 2, characterized in that: The rotation driving mechanism comprises a driving motor, a driving gear and a transmission gear. The driving motor is mounted on the machine platform, the driving gear is mounted on the output shaft of the driving motor, the transmission gear is mounted on the reel, and the transmission gear is meshed with the driving gear.

4. The uncoiler according to claim 1, characterized in that: The expansion and contraction driving mechanism includes a pyramid sleeve and an expansion and contraction driving structure for driving the pyramid sleeve to move along its own axial direction. The pyramid sleeve has a plurality of driving bevel groups, and the number of driving bevel groups is the same as that of the fan-shaped plates and they are matched one by one. Each driving bevel group includes a plurality of driving bevels distributed in sequence along the axial direction of the pyramid sleeve, and the fan-shaped plate is provided with a plurality of bearing drive bevels that match the wedge surfaces of each driving bevel.

5. The uncoiler according to claim 4, characterized in that: The expansion and contraction driving structure includes a hollow main shaft, a pull rod and an expansion and contraction power unit. The pyramid sleeve is mounted on the hollow main shaft and can move axially along the hollow main shaft. The pull rod is movably arranged in the axial cavity of the hollow main shaft. One end of the pull rod extends out of the hollow main shaft and is connected to the expansion and contraction power unit.

6. The uncoiler according to claim 5, characterized in that: The hollow main shaft comprises a first shaft section located inside the machine platform and a second shaft section extending out of the machine platform surface through an avoidance hole; a support bearing is arranged inside the machine platform, and the first shaft section cooperates with the support bearing.

7. The uncoiler according to claim 5, characterized in that: The hollow main shaft is flange-connected to the expansion and contraction power unit, and the output shaft of the expansion and contraction power unit is connected to the pull rod through a coupling.

8. The uncoiler according to claim 5, characterized in that: The pyramid sleeve and the pull rod are connected via a flat pin.

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