Uncoiler winding drum and uncoiler

Abstract

The utility model relates to the technical field of metallurgical equipment, and discloses an uncoiler winding drum which comprises a main shaft, a mandrel pull rod, a collapsible cylinder, a connecting sleeve and a buckle sleeve set. The mandrel pull rod is arranged in the hollow shaft hole of the main shaft; the connecting sleeve is provided with a cavity penetrating in the first direction, and the surface of the connecting sleeve is provided with an overhaul window communicating with the cavity or the connecting sleeve can be detached in the radial direction of the connecting sleeve. The buckle sleeve set is located in the cavity of the connecting sleeve, and the expansion rod and the mandrel pull rod are detachably connected through the buckle sleeve set. The buckle sleeve set comprises two buckles which are detachably connected, and grooves are formed in the inner sides of the buckles, so that after the two buckles are in butt joint, the two grooves define a limiting groove, and the limiting groove is used for containing the expansion rod and the mandrel pull rod and limiting the expansion rod and the mandrel pull rod from moving in the radial direction. The expansion cylinder has the advantages that during disassembly, assembly and maintenance, the whole winding drum component does not need to be disassembled, and the expansion cylinder and the mandrel pull rod can be separated only by disassembling the connecting sleeve and the buckle sleeve set.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to an uncoiler drum and an uncoiler. Background Technology

[0002] The coil uncoiling machine is an important piece of equipment in the production of cold-rolled strip steel. The coil is inserted into the core of the steel coil when the outer diameter is contracted. Under the action of the expansion cylinder, the outer diameter of the coil expands, tightening the core of the steel coil. Then, it rotates under the drive of the power mechanism to continuously open the steel coil during production.

[0003] Currently, the uncoiling machine drum includes a main shaft, a mandrel tie rod, and an expansion / contraction cylinder. The mandrel tie rod is located inside the hollow shaft hole of the main shaft. The cylinder body of the expansion / contraction cylinder is fixed to the end face of the main shaft by bolts. The expansion / contraction rod of the expansion / contraction cylinder is threadedly connected to the mandrel tie rod. The expansion / contraction cylinder drives the mandrel tie rod to move axially, causing the main shaft to expand or contract. However, because the expansion / contraction cylinder and the mandrel tie rod are connected by threads, when installing or disassembling the expansion / contraction cylinder, or replacing the expansion / contraction cylinder seals, the entire drum assembly needs to be disassembled before the mandrel tie rod and expansion / contraction cylinder can be removed together for maintenance. This results in significant manpower consumption and excessive time consumption during disassembly and assembly. Furthermore, the disassembly process may damage other components of the drum, increasing unnecessary losses. Utility Model Content

[0004] The purpose of this utility model is to provide an uncoiler drum to solve the problems of inconvenient disassembly of the expansion cylinder and increased labor costs in the above-mentioned background art.

[0005] Another objective of this invention is to provide an easy-to-maintain uncoiler.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An uncoiler drum includes: a main shaft, a mandrel tie rod, a shrink cylinder, a connecting sleeve, and a snap-fit ​​assembly; the mandrel tie rod is disposed within a hollow shaft hole of the main shaft;

[0008] The connecting sleeve has a cavity extending along a first direction, and the surface of the connecting sleeve has an inspection window communicating with the cavity, or the connecting sleeve is detachable along its radial direction; the expansion cylinder is detachably mounted on one end face of the spindle through the connecting sleeve, and the expansion rod of the expansion cylinder is located in the cavity of the connecting sleeve, one end of the mandrel pull rod extends into the cavity of the connecting sleeve, and the axis of the expansion rod and the axis of the mandrel pull rod both extend along the first direction;

[0009] The snap-fit ​​assembly is located within the cavity of the connecting sleeve, and the expansion rod and the mandrel tie rod are detachably connected via the snap-fit ​​assembly. The snap-fit ​​assembly includes two detachably connected snaps, each with a groove on its inner side. When the two snaps are engaged, the two grooves form a limiting groove to accommodate the expansion rod and the mandrel tie rod, and to restrict radial movement between them. During disassembly and maintenance, it is not necessary to completely disassemble the entire drum assembly; only the connecting sleeve and the snap-fit ​​assembly need to be disassembled to separate the expansion cylinder from the mandrel tie rod.

[0010] Furthermore, the groove has limiting blocks at both ends along the first direction, and the limiting blocks protrude from the surface of the groove along the second direction, so that after the two buckles are engaged, the two limiting blocks form a limiting ring for engaging the spindle pull rod and the expansion rod; the ends of the spindle pull rod and the expansion rod both have concave rings that cooperate with the limiting ring, and the second direction is perpendicular to the first direction.

[0011] Furthermore, the groove is semi-circular, and the limiting block is semi-annular. With this arrangement, the two semi-circular grooves are joined together to form a circular limiting groove, and the two semi-annular limiting blocks are joined together to form an annular limiting ring. The ends of the spindle pull rod and the expansion rod are located in the limiting groove, and the concave ring portion is engaged with the limiting ring to prevent the spindle pull rod and the expansion rod from disengaging from the latch during reciprocating movement in the first direction.

[0012] Furthermore, a transition fillet is provided at the connection edge between the limiting block and the groove. By providing a transition fillet, the structural strength and reliability can be improved, and the cutting stress can be reduced.

[0013] Furthermore, the buckle has fixing holes distributed on the outer side of the groove and extending through the buckle along the second direction. These fixing holes allow two buckles to be secured together, facilitating operation.

[0014] Furthermore, in the snap-fit ​​assembly, at least one of the snap-fits has an internal thread in its fixing hole. This design allows the two snap-fits to be engaged with bolts, facilitating assembly and disassembly.

[0015] Furthermore, the connecting sleeve includes a sleeve and a connecting plate. The sleeve has a cavity extending through a first direction. The connecting plates are respectively disposed at both ends of the sleeve. Bolt holes are evenly distributed on the connecting plates. One connecting plate is used to connect with one end face of the spindle, and the other connecting plate is used to connect with the expansion cylinder. The connecting sleeve has an inspection window communicating with its cavity so that the snap-fit ​​assembly can be disassembled through the inspection window to separate the expansion rod from the spindle pull rod.

[0016] Furthermore, the connecting sleeve includes at least two connecting sleeves and connecting discs located at both ends of the connecting sleeves. At least two of the connecting sleeves are assembled into a cylindrical shape to form a cavity that extends along the first direction, and the connecting discs at both ends of at least two of the connecting sleeves are correspondingly assembled into an annulus for detachable connection with the main shaft and the expansion cylinder.

[0017] Furthermore, at least one connection sleeve has an inspection window.

[0018] An uncoiler includes the aforementioned uncoiler drum.

[0019] This invention has the following advantages over the prior art:

[0020] 1. The uncoiling machine drum of this utility model is equipped with a connecting sleeve and a snap-fit ​​assembly, allowing the expansion cylinder to be detachably mounted on the main shaft of the drum via the connecting sleeve. One end of the mandrel pull rod and the expansion rod of the expansion cylinder are both located within the cavity of the connecting sleeve, and the two are detachably connected by the snap-fit ​​assembly. An inspection window communicating with the cavity is provided on the surface of the connecting sleeve, or the connecting sleeve can be disassembled radially. During disassembly and maintenance, it is not necessary to completely disassemble the entire drum assembly; the snap-fit ​​assembly can be disassembled simply through the inspection window of the connecting sleeve or by disassembling a portion of the connecting sleeve radially, thus separating the expansion rod from the mandrel pull rod. The expansion cylinder can then be separated from the main shaft by disassembling the connecting sleeve. This design simplifies the overall structure, makes disassembly and maintenance more convenient, and effectively reduces labor costs. The snap-fit ​​assembly includes two detachably connected snaps. The inner side of the snaps is provided with grooves. When the two snaps are engaged, the two grooves form a limiting groove. This limiting groove is used to accommodate the expansion rod and the spindle pull rod, and restricts the radial movement between the expansion rod and the spindle pull rod. The expansion rod and the spindle pull rod are detachably connected together by the snaps. When the expansion rod moves, it drives the spindle pull rod to reciprocate along the first direction, thereby expanding or reducing the diameter of the spindle.

[0021] 2. The uncoiler of this utility model, by setting a connecting sleeve and a snap-fit ​​assembly, makes disassembly between the main shaft and the expansion cylinder, and between the mandrel tie rod and the expansion rod, simple. This makes disassembly, assembly and maintenance of the roll more convenient, improves production efficiency, and reduces labor input. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the uncoiling drum in Embodiment 1 of this utility model (the expansion rod of the expansion cylinder extends to push the mandrel pull rod);

[0023] Figure 2 This is a schematic diagram of the buckle structure in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the connecting sleeve in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure combining the connecting sleeve and the buckle in Embodiment 1 of this utility model;

[0026] Figure 5 This is a schematic diagram of the connecting sleeve in Embodiment 2 of this utility model;

[0027] In the diagram: 1. Connecting sleeve; 101. Chamber; 102. Inspection window; 103. Sleeve; 104. Connecting plate; 105. Connecting sleeve; 2. Expansion cylinder; 201. Expansion rod; 3. Mandrel pull rod; 4. Snap fastener; 401. Groove; 402. Limiting block; 403. Fixing hole; 5. Main shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0029] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be further discussed and described in the description of the subsequent figures.

[0032] Example 1:

[0033] like Figures 1 to 4As shown, this utility model provides an uncoiling machine drum, including: a main shaft 5, a mandrel pull rod 3, a shrinking cylinder 2, a connecting sleeve 1, and a snap-fit ​​assembly; the mandrel pull rod 3 is disposed in the hollow shaft hole of the main shaft 5; wherein, the connecting sleeve 1 has a cavity 101 extending along a first direction, and an inspection window communicating with the cavity is opened on the surface of the connecting sleeve; the shrinking cylinder 2 is detachably disposed on one end face of the main shaft 5 through the connecting sleeve 1, and the shrinking rod 201 of the shrinking cylinder 2 is located in the cavity 101 of the connecting sleeve 1; one end of the mandrel pull rod 3 extends into the cavity 101 of the connecting sleeve 1; the axis of the shrinking rod 201 and the axis of the mandrel pull rod 3 both extend along the first direction;

[0034] The snap-fit ​​assembly is located within the chamber 101 of the connecting sleeve 1, and the expansion rod 201 and the spindle pull rod 3 are detachably connected via the snap-fit ​​assembly. The snap-fit ​​assembly includes two detachably connected snaps 4, each with an inner groove 401. When the two snaps 4 are engaged, the two grooves 401 form a limiting groove to accommodate the expansion rod 201 and the spindle pull rod 3, and to restrict radial movement between them. This design eliminates the need to completely disassemble the entire drum assembly during disassembly and maintenance. The snap-fit ​​assembly can be disassembled and installed via the inspection window of the connecting sleeve, allowing for the separation and installation of the expansion rod and spindle pull rod. The expansion cylinder is then separated from the main shaft via the connecting sleeve. This design simplifies the overall structure, makes disassembly and maintenance more convenient, and effectively reduces labor costs.

[0035] like Figure 3 As shown, in this embodiment, the connecting sleeve 1 includes a sleeve 103 and a connecting plate 104. The sleeve 103 has a chamber 101 extending through a first direction. The connecting plates 104 are respectively disposed at both ends of the sleeve 103. Bolt holes are evenly distributed on the connecting plates 104. One connecting plate 104 is connected to one end face of the main shaft 5 by bolts, and the other connecting plate 104 is connected to the expansion cylinder 2 by bolts. Specifically, an inspection window 102 communicating with its chamber 101 is provided on the sleeve of the connecting sleeve 1. In daily production, the connection status between the expansion rod 201 and the spindle pull rod 3 can be observed at any time through the inspection window 102. When it is necessary to disassemble and maintain the expansion cylinder 2, the snap-fit ​​assembly can be disassembled through the inspection window 102 to separate the expansion rod 201 from the spindle pull rod 3, and then one of the connecting plates 104 of the connecting sleeve 1 can be removed to separate the expansion cylinder 2 from the main shaft 5. This design makes the disassembly, assembly, and maintenance of the expansion cylinder 2 more convenient, effectively reducing labor costs. To facilitate the removal of the clips, the number of inspection windows 102 can be two or more, evenly distributed on the sleeve 103.

[0036] like Figure 2As shown, in this embodiment, the groove 401 of the buckle 4 also has limiting blocks 402 at both ends along the first direction. The limiting blocks 402 protrude from the surface of the groove 401 along the second direction, so that after the two buckles 4 are connected, the two limiting blocks 402 form a limiting ring for engaging the spindle pull rod 3 and the expansion rod 201. The ends of the spindle pull rod 3 and the expansion rod 201 both have concave rings that cooperate with the limiting ring. The second direction is perpendicular to the first direction. In this embodiment, the groove 401 is semi-circular, and the limiting blocks 402 are semi-annular. With this configuration, two semi-circular grooves 401 are combined to form a circular limiting groove, and two semi-annular limiting blocks 402 are combined to form an annular limiting ring. The ends of the spindle pull rod 3 and the expansion rod 201 are located in the limiting groove, and the concave ring part is engaged with the limiting ring, which further improves the connection stability between the spindle pull rod 3 and the expansion rod 201 buckle 4, and prevents the expansion rod 201 from dislodging from the buckle 4 during the process of the spindle pull rod 3 reciprocating along the first direction.

[0037] Specifically, the connection edge between the limiting block 402 and the groove 401 is provided with a transition fillet. Providing a transition fillet has the following advantages:

[0038] 1. Improved structural strength and reliability, and uniform stress distribution: The presence of the transition fillet allows the stress of the limiting block 402 to be more evenly distributed across the entire snap-fit ​​4 structure when under load, avoiding stress concentration at sharp edges. This significantly reduces the possibility of crack initiation and propagation caused by stress concentration, thereby improving the structural strength and load-bearing capacity of the snap-fit ​​4.

[0039] 2. Reduced cutting stress minimizes microstructural damage within the clip 4, extending fatigue life. Under long-term alternating loads, it better maintains its mechanical properties, reducing the risk of failure due to fatigue and ensuring long-term stable operation of the equipment.

[0040] In this embodiment, the buckle 4 has a fixing hole 403, which is distributed on the outside of the groove 401 and extends through the buckle 4 in the second direction. This fixing hole 403 allows two buckles to be fixed together, facilitating operation. Specifically, in the buckle assembly, at least one of the buckles 4 has an internal thread in its fixing hole 403. This allows the two buckles 4 to be fastened together with bolts, facilitating assembly and disassembly.

[0041] In this embodiment, when the expansion cylinder 2 needs to be installed on the uncoiling drum, the connecting plate 104 at one end of the connecting sleeve 1 is bolted to the main shaft 5. After the mandrel pull rod 3 and the expansion rod 201 of the expansion cylinder 2 are aligned with the chamber 101 of the connecting sleeve 1, the two clips 4 are spliced ​​through the inspection window 102, so that the expansion rod 2 and the mandrel pull rod 3 are fixed in the limiting groove after the two clips 4 are spliced. Then, the two clips 4 are fixed together with bolts. Finally, the expansion cylinder 2 is fixed to the connecting plate at the other end of the connecting sleeve with bolts. When it is necessary to disassemble the expansion cylinder 2 and replace the seal of the expansion cylinder 2, the bolts fixing the two clips 4 can be removed through the inspection window 102 of the connecting sleeve 1, thereby disassembling the clips 4 and separating the expansion rod 201 from the spindle pull rod 3. Then, all the bolts on the connecting plate 104 at one end of the connecting sleeve 1 can be removed to separate the expansion cylinder 2 from the main shaft 5, and the expansion cylinder 2 can be removed smoothly.

[0042] This embodiment also includes an uncoiler that uses the uncoiler drum described above, in which the expansion cylinder and mandrel tie rod are designed as separate structures, simplifying the disassembly and assembly process of the expansion cylinder, making the uncoiler easier to maintain and repair, and improving production efficiency.

[0043] Example 2:

[0044] This embodiment is the same as embodiment 1 except for the following technical solutions:

[0045] like Figure 5 As shown, the connecting sleeve 1 in this embodiment includes at least two connecting sleeves 105 and connecting discs 105 located at both ends of the connecting sleeves 104. The at least two connecting sleeves 105 are assembled into a cylindrical shape to form a cavity 101 that extends along the first direction. The connecting discs 104 at both ends of the at least two connecting sleeves 105 are correspondingly assembled into an annulus for detachable connection with the main shaft 5 and the expansion cylinder 2. In this embodiment, the connecting sleeve 1 is configured as a split structure. When it is necessary to remove the expansion cylinder 2, one of the connecting sleeves 105 can be removed first (that is, the connecting discs at both ends of this connecting sleeve 105 can be removed from the main shaft and the expansion cylinder), thereby disassembling the buckle 4, separating the expansion rod 201 from the spindle pull rod 3, and then removing the other connecting sleeves 105 to separate the expansion cylinder 2 from the main shaft 5.

[0046] In another embodiment, an inspection window may be provided on at least one connecting sleeve 105 to observe the working condition of the expansion rod 201 and the spindle pull rod 3, or to maintain the buckle 4 through the inspection window 102.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An uncoiler drum, characterized in that, include: The spindle comprises a spindle tie rod, a telescopic cylinder, a connecting sleeve, and a snap-fit ​​assembly; the spindle tie rod is disposed within the hollow shaft hole of the spindle. The connecting sleeve has a cavity extending along a first direction, and the surface of the connecting sleeve has an inspection window communicating with the cavity, or the connecting sleeve is detachable along its radial direction; the expansion cylinder is detachably mounted on one end face of the spindle through the connecting sleeve, and the expansion rod of the expansion cylinder is located in the cavity of the connecting sleeve, one end of the mandrel pull rod extends into the cavity of the connecting sleeve, and the axis of the expansion rod and the axis of the mandrel pull rod both extend along the first direction; The snap-fit ​​sleeve is located in the cavity of the connecting sleeve, and the expansion rod and the mandrel pull rod are detachably connected by the snap-fit ​​sleeve. The snap-fit ​​sleeve includes two detachably connected snaps, and the inner side of the snaps has a groove so that after the two snaps are mated, the two grooves form a limiting groove to accommodate the expansion rod and the mandrel pull rod, and to restrict the radial movement between the expansion rod and the mandrel pull rod.

2. The uncoiler drum according to claim 1, characterized in that: The groove also has limiting blocks at both ends along the first direction. The limiting blocks protrude from the surface of the groove along the second direction so that after the two buckles are engaged, the two limiting blocks form a limiting ring for engaging the spindle pull rod and the expansion rod. The ends of the spindle pull rod and the expansion rod both have concave rings that cooperate with the limiting ring. The second direction is perpendicular to the first direction.

3. The uncoiler drum according to claim 2, characterized in that: The groove is semi-circular, and the limiting block is semi-annular.

4. The uncoiler drum according to claim 2, characterized in that: The connection edge between the limiting block and the groove is provided with a transition rounded corner.

5. The uncoiler drum according to claim 1, characterized in that: The buckle has fixing holes, which are distributed on the outside of the groove and penetrate the buckle along the second direction.

6. The uncoiler drum according to claim 5, characterized in that: In the buckle assembly, at least one of the buckles has an internal thread in its fixing hole.

7. The uncoiler drum according to claim 1, characterized in that: The connecting sleeve includes a sleeve and a connecting plate. The sleeve has a cavity extending through a first direction. The connecting plates are respectively disposed at both ends of the sleeve. Bolt holes are evenly distributed on the connecting plates. One connecting plate is used to connect to one end face of the spindle, and the other connecting plate is used to connect to the expansion cylinder. The connecting sleeve has an inspection window that communicates with its cavity so that the snap-fit ​​assembly can be disassembled through the inspection window to separate the expansion rod from the spindle pull rod.

8. The uncoiler drum according to claim 1, characterized in that: The connecting sleeve includes at least two connecting sleeves and connecting discs located at both ends of the connecting sleeves. At least two of the connecting sleeves are assembled into a cylindrical shape to form a cavity that runs through the first direction, and the connecting discs at both ends of at least two of the connecting sleeves are correspondingly assembled into an annulus for detachable connection with the main shaft and the expansion cylinder.

9. The uncoiler drum according to claim 8, characterized in that: At least one connection sleeve has an inspection window.

10. An uncoiler, characterized in that: Includes the uncoiler drum as described in any one of claims 1 to 9.

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