A stretch-retraction assembly of a double-head uncoiler and a double-head uncoiler

Abstract

The utility model relates to automatic production line technical field discloses a kind of expansion and contraction subassembly and double-end uncoiling equipment of double-end uncoiling equipment, and expansion and contraction subassembly includes main shaft, main shaft is connected with rotating component transmission, main shaft is equipped with pusher assembly and expansion assembly, rotating component drives main shaft, and pusher assembly and expansion assembly rotation are connected with main shaft;Expansion assembly includes several expansion plates, and expansion plate is enclosed to the cylindrical support surface with main shaft as axis;Pusher assembly is connected with expansion assembly transmission, and pusher assembly drives expansion assembly and moves along the axial direction of main shaft.This scheme expansion assembly when moving along the axial direction of main shaft, expansion plate is driven and moves expansion or reduces along the radial direction of main shaft, change the size of the support surface enclosed, by changing the support surface to the inner wall of different size roll stock support, rotating component drives expansion assembly rotation, and then drive roll stock rotation, to cooperate with material leading structure and realize uncoiling.

Description

Technical Field

[0001] This utility model relates to the field of automated production line technology, and in particular to an expansion and contraction component and a double-head uncoiling device. Background Technology

[0002] Uncoiling units are core equipment in industrial production lines used to process rolled materials (such as metal coils, plastic films, and paper). Their main function is to smoothly unwind the rolls and continuously convey them to subsequent processes (such as straightening, shearing, and stamping). Uncoiling units use expansion and contraction cylinders to support the rolled material; existing uncoiling equipment typically has only one expansion and contraction cylinder.

[0003] Chinese Patent CN202122145335.0 discloses a double-head uncoiler, comprising: a column, a rotating mechanism and a limiting mechanism mounted on the column, a main shaft passing through the rotating mechanism, and two support frames mounted on the main shaft. Each support frame includes: an inner baffle, an outer baffle, support arms, and a sleeve. The inner baffle is connected to the main shaft. Four inner wing arms with elongated holes are mounted on the inner baffle. T-shaped sleeves are slidably mounted in the elongated holes and connected to the support arms. A sleeve is mounted on the main shaft, and four hinge seats are mounted on the sleeve. Connecting arms are hinged between the support arms and the hinge seats. A sleeve screw is mounted in the sleeve, and screw holes are provided on the main shaft. The sleeve screw is connected to the screw holes. The outer baffle is fixed to the sleeve, and four outer wing arms are mounted on the outer baffle. The four outer wing arms are staggered from the four inner wing arms and do not interfere with the support arms. This invention features a simple structure, improves the stability of the support frame, and effectively limits the movement of steel strip coils of varying widths. However, the expansion and contraction structure in this design needs further improvement.

[0004] This invention overcomes the shortcomings of the prior art by providing an expansion and contraction component suitable for bearing rolled material in a double-head uncoiling machine. Utility Model Content

[0005] The main purpose of this utility model is to provide an expansion and contraction component for a double-head unwinding device, including a main shaft, which is connected to a rotating component for transmission. The main shaft is provided with a pushing component and an expansion component. The rotating component drives the main shaft, as well as the pushing component and the expansion component connected to the main shaft, to rotate.

[0006] The expansion assembly includes several expansion plates that form a cylindrical support surface centered on the main shaft. The pushing assembly is connected to the expansion assembly in a transmission manner, and the pushing assembly drives the expansion assembly to move along the axial direction of the main shaft. When the expansion assembly moves along the axial direction of the main shaft, it drives the expansion plates to move and expand or shrink along the radial direction of the main shaft, thereby changing the size of the support surface.

[0007] Optionally, the pushing assembly includes a sliding sleeve, a hydraulic cylinder, and a support plate;

[0008] The hydraulic cylinder is mounted on the first end of the main shaft via a sliding sleeve. The sliding sleeve is cylindrical, with its inner side facing the outer circumferential surface of the main shaft. The first end of the sliding sleeve is connected to the hydraulic cylinder, and the tail end of the sliding sleeve is connected to the support plate via the expansion assembly. The support plate is fitted onto the outer circumferential surface of the main shaft and is fixedly connected to the main shaft.

[0009] Optionally, the hydraulic cylinder is connected to a rotary joint at the tail of the spindle via an internal channel of the spindle, and the rotary joint is externally connected to a hydraulic system.

[0010] Optionally, the expansion assembly includes a first connecting rod, a second connecting rod, a mounting block, and a connecting block; the first end of the first connecting rod is hinged to the mounting block, and the tail end of the first connecting rod is hinged to the connecting block; the mounting block is fixedly connected to the sliding sleeve, and the connecting block is fixedly connected to the inner surface of the expansion plate; the first end of the second connecting rod is hinged to the support plate, and the tail end of the second connecting rod is hinged to the middle part of the first connecting rod.

[0011] Optionally, the expansion assembly includes multiple expansion units, each expansion unit including four first links, a second link, a mounting block, a connecting block, and an expansion plate;

[0012] The two first connecting rods are divided into a group. The first group of first connecting rods has its head end hinged to both sides of the head end of the mounting block and its tail end hinged to both sides of the head end of the connecting block. The second group of first connecting rods has its head end hinged to both sides of the tail end of the mounting block and its tail end hinged to both sides of the tail end of the connecting block.

[0013] The tail end of the second link extends between the first link of the second group and is hinged to the middle of the first link of the second group; the expansion plate in the expansion unit forms the support surface.

[0014] Optionally, a baffle is provided at the interval between the expansion plates of adjacent expansion units, and the baffle is connected to the expansion plate.

[0015] Optionally, the rotating assembly includes an unwinding motor and a transmission gear, the transmission gear being fixedly connected to the main shaft, and the unwinding motor being poweredly connected to the transmission gear via a reducer.

[0016] Optionally, the spindle is connected to the frame via a support bearing.

[0017] Optionally, a brake disc is included, the brake disc being disposed on the spindle.

[0018] This utility model also provides a double-head unwinding device, including the above-mentioned expansion and contraction components, wherein there are two expansion and contraction components, and the two expansion and contraction components alternately switch positions through a rotating component.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The expansion and contraction assembly provided by this utility model has multiple expansion plates that expand outward by pushing the assembly, thereby changing the size of the support surface formed by the expansion plates. By changing the support surface, the support is provided to the inner wall of the roll material of different sizes. The rotation assembly drives the expansion assembly to rotate, which in turn drives the roll material to rotate, so as to cooperate with the feeding structure to achieve unwinding. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a schematic diagram of an embodiment of the expansion and contraction component of this utility model;

[0023] Figure 2 This is a side view of an embodiment of the expansion and contraction component of this utility model;

[0024] Figure 3 Cross-sectional view of an embodiment of the expansion and contraction component of this utility model. Figure 1 ;

[0025] Figure 4 Cross-sectional view of an embodiment of the expansion and contraction component of this utility model. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of an embodiment of the double-head uncoiling device of this utility model;

[0027] Figure 6 This is a side view of an embodiment of the double-head unwinding device of this utility model.

[0028] Figure label:

[0029] 10-Expansion / Contraction Assembly; 11-Main Shaft; 111-Support Bearing; 112-Brake Disc; 12-Rotating Assembly; 121-Unwinding Motor; 122-Transmission Gear; 13-Push Assembly; 131-Sliding Sleeve; 132-Hydraulic Cylinder; 133-Support Plate; 134-Rotary Joint; 14-Expansion Assembly; 141-Expansion Plate; 142-First Linkage; 143-Second Linkage; 144-Mounting Block; 145-Connecting Block; 146-Baffle; 20-Frame; 21-Unwinding Area; 30-Rotating Assembly; 40-Feeding Assembly; 50-Limiting Assembly; 60-Support Frame. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0031] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0032] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1-4 The diagram shown is a schematic representation of an embodiment of the expansion and contraction component provided by this utility model.

[0034] Please refer to Figure 1-4 This embodiment is mainly used for supporting and rotating the coiled material. This embodiment includes a main shaft 11, which is connected to a rotating assembly 12. The main shaft 11 is provided with a pushing assembly 13 and an expanding assembly 14. The rotating assembly 12 drives the main shaft 11, as well as the pushing assembly 13 and the expanding assembly 14 connected to the main shaft 11, to rotate.

[0035] The expansion assembly 14 includes several expansion plates 141, which form a cylindrical support surface centered on the main shaft 11. The pushing assembly 13 is connected to the expansion assembly 14 via a drive mechanism, and the pushing assembly 14 drives the expansion assembly 14 to move axially along the main shaft 11. As the expansion assembly 14 moves axially along the main shaft 11, it causes the expansion plates 141 to move radially along the main shaft 11, expanding or contracting, thus changing the size of the formed support surface.

[0036] The pushing component 13 causes the expansion plate 141 of the expansion component 14 to contract, reducing the outer diameter of the support surface so that it is smaller than the inner diameter of the coil, facilitating the coil to fit into the expansion component 14. After the coil is fitted into the expansion component 14, the pushing component 13 causes the expansion component 14 to expand outward, increasing the outer diameter of the support surface so that the support surface is pressed against the inner diameter of the coil, thus completing the bearing of the coil. After bearing the coil, the rotating component 12 causes the expansion component 14 to rotate around the main shaft 11, thereby causing the coil to rotate, in conjunction with the feeding structure to unwind the coil.

[0037] In one embodiment, the pushing assembly 13 includes a sliding sleeve 131, a hydraulic cylinder 132, and a support plate 133. The hydraulic cylinder 132 is disposed at the beginning of the main shaft 11 via the sliding sleeve 131. The sliding sleeve 131 is cylindrical, and the inner side of the sliding sleeve 131 is disposed opposite to the outer circumferential surface of the main shaft 11. The beginning of the sliding sleeve 131 is connected to the hydraulic cylinder 132, and the end of the sliding sleeve 131 is connected to the support plate 133 via an expansion assembly 14. The support plate 133 is sleeved on the outer circumferential surface of the main shaft 11 and is fixedly connected to the main shaft 11.

[0038] The hydraulic cylinder 132 drives the sliding sleeve 131 to extend and retract along the main shaft 11, thereby causing the expansion component 14 connected to the sliding sleeve 131 to expand outward or contract inward. The movement of the sliding sleeve 131 along the axial direction of the main shaft 11 is converted into movement along the radial direction of the main shaft 11 through the expansion plate 141, thereby realizing the expansion or contraction of the support surface.

[0039] Furthermore, the hydraulic cylinder 132 is connected to the rotary joint 134 at the tail of the spindle 11 through the internal channel of the spindle 11, and the hydraulic system is externally connected through the rotary joint 134. The rotary joint 134 prevents the connecting pipes of the hydraulic system from becoming entangled when the hydraulic cylinder 132 rotates with the spindle 11.

[0040] In one embodiment, the expansion assembly 14 includes a first connecting rod 142, a second connecting rod 143, a mounting block 144, and a connecting block 145. The first end of the first connecting rod 142 is hinged to the mounting block 144, and the tail end of the first connecting rod 142 is hinged to the connecting block 145. The mounting block 144 is fixedly connected to the sliding sleeve 131, and the connecting block 145 is fixedly connected to the inner surface of the expansion plate 141. The first end of the second connecting rod 143 is hinged to the support plate 133, and the tail end of the second connecting rod 143 is hinged to the middle of the first connecting rod 142.

[0041] The support plate 133 is fixedly connected to the main shaft 11. The sliding sleeve 131 moves along the axial direction of the main shaft 11 under the drive of the oil cylinder 132. When the sliding sleeve 131 moves, it drives the first connecting rod 142 and the second connecting rod 143 to move, changing the included angle between the first connecting rod 142 and the second connecting rod 143. When the included angle decreases, the first connecting rod 142 pushes the expansion plate 141 to move radially outward of the main shaft 11. At this time, the support surface enclosed by the expansion plate 141 expands. When the included angle increases, the first connecting rod 142 drives the expansion plate 141 to move radially inward of the main shaft 11. At this time, the support surface enclosed by the expansion plate 141 decreases.

[0042] Specifically, the expansion assembly 14 includes multiple expansion units, and in this embodiment, the number of expansion units is specifically three. Each expansion unit includes four first connecting rods 142, one second connecting rod 143, one mounting block 144, one connecting block 145, and one expansion plate 141. The two first connecting rods 142 are grouped together, resulting in two groups of first connecting rods 142. Both the mounting block 144 and the connecting block 145 are elongated. The first ends of the first connecting rods 142 in the first group are hinged to both sides of the first end of the mounting block 144, and the tail ends are hinged to both sides of the first end of the connecting block 145. The first ends of the first connecting rods 142 in the second group are hinged to both sides of the tail end of the mounting block 144, and the tail ends are hinged to both sides of the tail end of the connecting block 145. The tail end of the second connecting rod 143 extends between the first connecting rods 142 in the second group and is hinged to the middle of the first connecting rods 142 in the second group. The expansion plates 141 in the multiple expansion units form a support surface.

[0043] Furthermore, a baffle 146 is provided at the interval between the expansion plates 141 of adjacent expansion units, and the baffle 146 is connected to the expansion plate 141. The baffle 146 is used to prevent the rolled material from getting stuck in the gap between the expansion plates 141.

[0044] In one embodiment, the rotating assembly 12 includes an unwinding motor 121 and a transmission gear 122. The transmission gear 122 is fixedly connected to the main shaft 11, and the unwinding motor 121 is poweredly connected to the transmission gear 122 through a reducer (not shown). The unwinding motor 121 and the transmission gear 122 can also be driven by a sprocket and chain.

[0045] In one embodiment, the spindle 11 is connected to the frame 20 via support bearings 111. Specifically, there are two sets of support bearings 111, which are used to connect the spindle 11 to the front and rear sides of the frame 20, respectively, to reduce the rotational resistance between the spindle 11 and the frame 20.

[0046] In one embodiment, a brake disc 112 is included, which is disposed on the main shaft 11. The brake disc 112 is an air disc brake used to stop the rotation of the main shaft 11.

[0047] like Figure 5-6 As shown, this utility model also provides an embodiment of a double-head unwinding device.

[0048] Please refer to Figure 5-6 This embodiment includes the aforementioned expansion and contraction assembly 10, with two expansion and contraction assemblies 10. The two expansion and contraction assemblies 10 are alternately switched in position by a rotating assembly 30. In addition, it includes a feeding assembly 40 and a limiting assembly 50. One side of the frame 20 is an unwinding area 21. The frame 20 is connected to a support frame 60 via the rotating assembly 30, and the support frame 60 is fixedly connected to the ground. The expansion and contraction assemblies 10 carry the rolled material and switch within the unwinding area via the rotating assembly 30. The two expansion and contraction assemblies 10 each carry the rolled material. When the rolled material on one side is unwound, the rotating assembly 30 switches the rolled material on the other side to the unwinding area 21 for unwinding, while simultaneously feeding the other expansion and contraction assembly 10, increasing unwinding efficiency.

[0049] The unwinding area 21 is equipped with a feeding component 40, which is used to feed the material after unwinding. The number of limiting components 50 matches the number of expansion and contraction components 10. The limiting components 50 are located on the side of the expansion and contraction components 10. The limiting components 50 adjust the limiting range according to the width or thickness of the material, limiting the two end faces or the circumference of the material to prevent the material from unwinding.

[0050] In summary, the expansion and contraction assembly embodiment provided by this utility model allows multiple expansion plates of the expansion assembly to expand outward by pushing the assembly, thereby changing the size of the support surface formed by the expansion plates. The support surface supports the inner wall of the roll material of different sizes. The rotation assembly drives the expansion assembly to rotate, which in turn drives the roll material to rotate, so as to cooperate with the feeding structure to achieve unwinding.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shrinkage assembly for a double-head unwinding device, characterized in that, It includes a main shaft, which is connected to a rotating assembly for transmission. The main shaft is provided with a pushing assembly and an expanding assembly. The rotating assembly drives the main shaft, as well as the pushing assembly and the expanding assembly connected to the main shaft, to rotate. The expansion assembly includes several expansion plates that form a cylindrical support surface centered on the main shaft. The pushing assembly is connected to the expansion assembly in a transmission manner, and the pushing assembly drives the expansion assembly to move along the axial direction of the main shaft. When the expansion assembly moves along the axial direction of the main shaft, it drives the expansion plates to move and expand or shrink along the radial direction of the main shaft, thereby changing the size of the support surface.

2. The expansion and contraction assembly for a double-head unwinding device according to claim 1, characterized in that, The actuation assembly includes a sliding sleeve, a hydraulic cylinder, and a support plate; The hydraulic cylinder is mounted on the first end of the main shaft via a sliding sleeve. The sliding sleeve is cylindrical, with its inner side facing the outer circumferential surface of the main shaft. The first end of the sliding sleeve is connected to the hydraulic cylinder, and the tail end of the sliding sleeve is connected to the support plate via the expansion assembly. The support plate is fitted onto the outer circumferential surface of the main shaft and is fixedly connected to the main shaft.

3. The expansion and contraction assembly for a double-head unwinding device according to claim 2, characterized in that, The hydraulic cylinder is connected to the rotary joint at the tail of the main shaft through the internal channel of the main shaft, and the rotary joint is externally connected to the hydraulic system.

4. The expansion and contraction assembly for a double-head unwinding device according to claim 2, characterized in that, The expansion assembly includes a first connecting rod, a second connecting rod, a mounting block, and a connecting block; the first end of the first connecting rod is hinged to the mounting block, and the tail end of the first connecting rod is hinged to the connecting block; the mounting block is fixedly connected to the sliding sleeve, and the connecting block is fixedly connected to the inner surface of the expansion plate; the first end of the second connecting rod is hinged to the support plate, and the tail end of the second connecting rod is hinged to the middle part of the first connecting rod.

5. The expansion and contraction assembly for a double-head unwinding device according to claim 4, characterized in that, The expansion assembly includes multiple expansion units, each expansion unit including four first links, a second link, a mounting block, a connecting block, and an expansion plate; The two first connecting rods are divided into a group. The first group of first connecting rods has its head end hinged to both sides of the head end of the mounting block and its tail end hinged to both sides of the head end of the connecting block. The second group of first connecting rods has its head end hinged to both sides of the tail end of the mounting block and its tail end hinged to both sides of the tail end of the connecting block. The tail end of the second link extends between the first link of the second group and is hinged to the middle of the first link of the second group; the expansion plate in the expansion unit forms the support surface.

6. The expansion and contraction assembly for a double-head unwinding device according to claim 5, characterized in that, A baffle is provided at the interval between the expansion plates of adjacent expansion units, and the baffle is connected to the expansion plate.

7. The expansion and contraction assembly for a double-head unwinding device according to claim 1, characterized in that, The rotating assembly includes an unwinding motor and a transmission gear. The transmission gear is fixedly connected to the main shaft, and the unwinding motor is poweredly connected to the transmission gear through a reducer.

8. The expansion and contraction assembly for a double-head uncoiling device according to claim 1, characterized in that, The spindle is connected to the frame via a support bearing.

9. The expansion and contraction assembly for a double-head unwinding device according to claim 1, characterized in that, Includes a brake disc, which is disposed on the main shaft.

10. A double-head uncoiling device, characterized in that, Includes the expansion and contraction component as described in any one of claims 1-9, wherein the number of the expansion and contraction components is two, and the two expansion and contraction components alternately switch positions via a rotating component.

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