A webbing device for preventing central dishing
By using a structure that combines a central truncated cone with a truncated cone slider, along with an elastic ring to provide radial support, the problem of the expansion tube in the coil device deforming inward under strong tension is solved, thus achieving smooth separation of the coil and efficient utilization of resources.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 薛厚章
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-21
AI Technical Summary
In existing coil winding devices, the expansion tube is prone to inward deformation in the middle under strong tension winding, which makes it difficult to separate waste edge material and wastes resources. In addition, existing materials such as aluminum alloy or plastic materials have insufficient compressive strength, and rigid materials increase the weight and cost of the device.
The structure adopts a combination of a central truncated cone and a truncated cone slider. The truncated cone slider supports the middle part of the unit segment, and the elastic ring provides radial tension to prevent the segment from deforming inward under strong tension. The sliding of the truncated cone slider adapts to the radial deformation of the segment.
This effectively prevents the unit segments from concave deformation in the middle under strong tension during winding, ensuring the normal operation of the coil and reducing resource waste and production costs.
Smart Images
Figure CN224530336U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coil technology, specifically relating to a coil device for preventing the center from concave. Background Technology
[0002] Roll materials are used in a wide range of fields, such as die-cutting, slitting, laminating, rewinding, printing, bonding, labeling, winding, masks, automatic packaging sealing, and milk tea machine sealing equipment, all of which require the collection of edge materials or waste. Currently, waste materials are collected in production using paper tubes or plastic tubes, which are then wrapped around the waste materials. However, this method makes it inconvenient to separate the waste materials. Separating them requires using blades or cleavers, which not only damages the blades and wastes them, but also increases labor and time costs. The removed waste is also messy, reducing its value for reuse. If the waste materials are not separated, not only is their reuse value reduced, but the paper or plastic tubes are also wasted, losing their value for multiple reuses and resulting in resource waste.
[0003] In the prior art, CN215710818U discloses a winding and unwinding mechanism for a tubeless winding and unwinding device, which is used in conjunction with its expansion tube to support the inner diameter of the expansion tube, so that the radius of the expansion tube can be increased or decreased. In this way, waste edge material can be wound around the expansion tube with a larger radius for winding and material collection. When it is necessary to remove the waste edge material, it is only necessary to release the pressure on the expansion tube to reduce its radius or restore the initial device to achieve separation of waste edge material from the expansion tube.
[0004] However, in existing technologies, the tube segments (referred to as expansion tubes in CN215710818U) are generally made of aluminum alloy or plastic materials, which have insufficient compressive strength. When the tube segment is longer than 15cm, under strong tensile winding, the middle of the tube segment is prone to inward deformation, affecting normal winding. If hard materials such as iron are used, it will greatly increase the weight of the device itself and the cost of production and manufacturing. Utility Model Content
[0005] To address the aforementioned problems in the existing technology, this solution provides a coil device that prevents the center from concave.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A device for preventing the center of a coil from concave, comprising:
[0008] Central axis;
[0009] The fixed truncated cone is coaxially fixed on the central axis;
[0010] The movable cone is coaxially mounted on the central axis and can slide along the central axis, with the small end of the movable cone facing the small end of the fixed cone.
[0011] The intermediate truncated cone is coaxially fixed on the central axis, and the orientation of the small end of the intermediate truncated cone is the same as the orientation of the small end of the fixed truncated cone.
[0012] The unit segment abuts at one end with the conical surface of the intermediate truncated cone and at the other end with the conical surface of the movable truncated cone; a truncated cone slider is provided on the inner side of the middle part of the unit segment, and the truncated cone slider abuts with the conical surface of the intermediate truncated cone; several unit segments are arranged in a ring around the central axis.
[0013] The elastic ring connects all the unit segments and brings them together towards the central axis.
[0014] As an alternative or supplement to the above structure: the unit segment is a one-piece molded structure and is elongated; the frustum slider is integrated with the unit segment;
[0015] Alternatively, the unit segment is a multi-component structure, including a long strip-shaped segment body, with end connecting blocks detachably connected to both ends of the segment body, and a dovetail groove provided on the inner side of the segment body, with the frustum slider installed in the dovetail groove.
[0016] As an alternative or supplement to the above structure: inner protrusions are provided at both ends of the unit segment, and the inner protrusions slide in contact with the grooves on the conical surface of the fixed or movable cone.
[0017] When the unit segment is a one-piece molded structure, the inner protrusion is located at the end of the unit segment; when the unit segment is a multi-part assembly structure, the inner protrusion is located on the end connecting block.
[0018] As an alternative or supplement to the above structure: when the unit segment is a one-piece molded structure, hooks are provided on the inner side of both ends of the unit segment, and the elastic ring is attached to the hooks; when the unit segment is a multi-part assembly structure, the elastic ring is installed in the arc-shaped groove on the end connecting block.
[0019] As an alternative or supplement to the above structure: the dovetail groove of the segment body is provided with a hook and an inner strip, one end of the inner strip abuts against the end connecting block or hook, and the other end abuts against the cone slider.
[0020] As an alternative or supplement to the above structure: an inner strip is provided in the dovetail groove of the segment body, one end of the inner strip abuts against the end connecting block and the other end abuts against the truncated cone slider.
[0021] As an alternative or supplement to the above structure: there are multiple intermediate cones, and the cone slider on each unit segment corresponds one-to-one with the intermediate cone.
[0022] As an alternative or supplement to the above structure: a clamp is fitted on the central shaft, and the clamp abuts against the end face of the movable cone to restrict the movement of the movable cone.
[0023] As an alternative or supplement to the above structure: the fixed frustum, the intermediate frustum, and the movable frustum all have the same taper value.
[0024] The beneficial effects of this utility model are as follows:
[0025] 1. In this solution, the structure of the middle truncated cone and the truncated cone slider is adopted, which can support the middle of the unit tube segment and reduce the inward deformation that is prone to occur in the middle of the unit tube segment under strong tensile winding, thereby ensuring normal winding.
[0026] 2. At the same time, since the truncated block slides against the conical surface of the intermediate truncated block, the truncated block slides adaptively relative to the intermediate truncated block when the segments converge inward, thereby meeting the requirements of radial deformation of the segments. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0028] Figure 1 This is a schematic diagram of a coil-winding device;
[0029] Figure 2 This is a schematic diagram of another type of coil-making device;
[0030] Figure 3 yes Figure 2 A structural diagram of the unit tube sheet of the coiling device;
[0031] Figure 4 It is a structural diagram of a coil winding device with multiple intermediate bosses;
[0032] Figure 5 (a) and (b) in the diagram are structural diagrams of different sides of the hook.
[0033] In the diagram: 1-Central axis; 2-Modible truncated cone; 3-Unit segment; 31-Frustum slider; 32-Segment body; 33-End connecting block; 34-Inner strip; 35-Dovetail groove; 36-Inner protrusion; 4-Fixed truncated cone; 5-Elastic ring; 6-Intermediate truncated cone; 7-Hook; 8-Clamping hoop. Detailed Implementation
[0034] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.
[0035] Example 1
[0036] like Figure 1 As shown, this embodiment designs a coil device to prevent the center from concave, including components such as a central shaft 1, a movable cone 2, a unit tube 3, a fixed cone 4, an elastic ring 5, and an intermediate cone 6.
[0037] The central shaft 1 adopts a circular long rod structure, and a keyway can be set on the side wall of the central shaft 1. The central shaft 1 can be a solid shaft or a hollow tube.
[0038] The fixed cone 4 has a conical structure. Several grooves are provided on the conical surface of the fixed cone 4. The extension line of the grooves is located on the center line of the fixed cone 4. The number of grooves is the same as the number of unit tube segments 3. The small end of the fixed cone 4 faces the unit tube segment 3. The fixed cone 4 is coaxially fixed on the central shaft 1. The fixed cone 4 can be fixed by key connection.
[0039] The intermediate frustum 6 has a conical structure and a smooth conical surface. The intermediate frustum 6 is coaxially fixed to the central shaft 1 and can be fixed by a key connection. The orientation of the small end of the intermediate frustum 6 is the same as that of the small end of the fixed frustum 4.
[0040] The movable cone 2 has a conical structure and is coaxially mounted on the central axis 1. It can slide along the central axis 1. Several grooves are provided on the conical surface of the movable cone 2. The extension line of the grooves is located on the center line of the movable cone 2. The number of grooves is the same as the number of unit tube segments 3. The small end of the movable cone 2 faces the unit tube segment 3, that is, the small end of the movable cone 2 faces the small end of the fixed cone 4.
[0041] Each unit segment 3 is elongated, and several unit segments 3 are arranged around the outer periphery of the central axis 1, with all unit segments 3 arranged in a ring around the central axis 1. One end of the unit segment 3 abuts against the conical surface of the intermediate truncated cone 6, and the other end abuts against the conical surface of the movable truncated cone 2. Inner protrusions 36 are provided at both ends of the unit segment 3, and the inner protrusions 36 at both ends of the unit segment 3 slide in engagement with the grooves on the conical surfaces of the fixed truncated cone 4 and the movable truncated cone 2, respectively, so that the ends of the unit segment 3 can slide along the grooves, thereby continuously converging or expanding.
[0042] A frustum slider 31 is provided on the inner side of the middle part of the unit tube segment 3. The frustum slider 31 abuts against the conical surface of the intermediate frustum 6, thereby providing radial support to the middle part of the unit tube segment 3 through the frustum slider 31. This reduces the tendency for the middle part of the unit tube segment 3 to undergo concave deformation under strong tensile winding, thus ensuring normal material winding.
[0043] The elastic ring 5 can be a spring ring or an elastic rubber ring. The elastic ring 5 connects all the unit tube segments 3 and brings the unit tube segments 3 together towards the central axis 1. Hooks 7 are provided on the inner side at both ends of the unit tube segments 3. The elastic ring 5 is hooked onto the hooks 7, thereby providing a radial pulling force that brings the unit tube segments 3 together inward.
[0044] A clamp 8 is fitted onto the central shaft 1. After the position of the clamp 8 is fixed, the clamp 8 abuts against the end face of the movable cone 2 to restrict the movement of the movable cone 2.
[0045] like Figure 1 As shown, each unit segment 3 can adopt an integral molding structure, that is: the inner protrusion 36 is located at the end of the unit segment 3 and is connected to the unit segment 3 as one piece, the cone slider 31 is set as one piece with the unit segment 3, and the hook 7 is also set as one piece with the unit segment 3.
[0046] Example 2
[0047] like Figure 2 and 3 As shown, this embodiment designs a coil device to prevent the center from concave, including components such as a central shaft 1, a movable cone 2, a unit tube 3, a fixed cone 4, an elastic ring 5, and an intermediate cone 6.
[0048] The central shaft 1 adopts a circular long rod structure, and a keyway can be set on the side wall of the central shaft 1. The central shaft 1 can be a solid shaft or a hollow tube.
[0049] The fixed cone 4 has a conical structure. Several grooves are provided on the conical surface of the fixed cone 4. The extension line of the grooves is located on the center line of the fixed cone 4. The number of grooves is the same as the number of unit tube segments 3. The small end of the fixed cone 4 faces the unit tube segment 3. The fixed cone 4 is coaxially fixed on the central shaft 1. The fixed cone 4 can be fixed by key connection.
[0050] The intermediate frustum 6 has a conical structure and a smooth conical surface. The intermediate frustum 6 is coaxially fixed to the central shaft 1 and can be fixed by a key connection. The orientation of the small end of the intermediate frustum 6 is the same as that of the small end of the fixed frustum 4.
[0051] The movable cone 2 has a conical structure and is coaxially mounted on the central axis 1. It can slide along the central axis 1. Several grooves are provided on the conical surface of the movable cone 2. The extension line of the grooves is located on the center line of the movable cone 2. The number of grooves is the same as the number of unit tube segments 3. The small end of the movable cone 2 faces the unit tube segment 3, that is, the small end of the movable cone 2 faces the small end of the fixed cone 4.
[0052] Each unit segment 3 is elongated, and several unit segments 3 are arranged around the outer periphery of the central axis 1, with all unit segments 3 arranged in a ring around the central axis 1. One end of the unit segment 3 abuts against the conical surface of the intermediate truncated cone 6, and the other end abuts against the conical surface of the movable truncated cone 2. Inner protrusions 36 are provided at both ends of the unit segment 3, and the inner protrusions 36 at both ends of the unit segment 3 slide in engagement with the grooves on the conical surfaces of the fixed truncated cone 4 and the movable truncated cone 2, respectively, so that the ends of the unit segment 3 can slide along the grooves, thereby continuously converging or expanding.
[0053] A frustum slider 31 is provided on the inner side of the middle part of the unit tube segment 3. The frustum slider 31 abuts against the conical surface of the intermediate frustum 6, thereby providing radial support to the middle part of the unit tube segment 3 through the frustum slider 31. This reduces the tendency for the middle part of the unit tube segment 3 to undergo concave deformation under strong tensile winding, thus ensuring normal material winding.
[0054] The elastic ring 5 can be a spring ring or an elastic rubber ring. The elastic ring 5 connects all the unit segments 3 and brings the unit segments 3 together towards the central axis 1. The elastic ring 5 provides radial tension that brings the unit segments 3 together inward.
[0055] A clamp 8 is fitted onto the central shaft 1, and the clamp 8 abuts against the end face of the movable cone 2 to restrict the movement of the movable cone 2.
[0056] like Figure 2 and Figure 3 As shown, each unit segment 3 is a multi-component combination structure, and each unit segment 3 includes components such as a frustum slider 31, a segment body 32, an end connecting block 33, and an inner strip 34.
[0057] The segment body 32 is elongated and has a dovetail groove 35 on its inner side, and threaded holes at both ends.
[0058] An end connecting block 33 is provided at the end of the segment body 32. An arc groove and a screw hole are provided on the end connecting block 33. The arc groove is used for the installation of the elastic ring 5, and the screw hole is used for the bolt to pass through so as to fix the bolt between the end connecting block 33 and the segment body 32. An end connecting block 33 is detachably connected to each end of the segment body 32.
[0059] The inner protrusion 36 is located on the end connecting block 33 at the end of the unit segment 3.
[0060] The truncated slider 31 and the inner strip 34 are embedded in the dovetail groove 35 of the tube body 32. One end of the inner strip 34 abuts against the end connecting block 33 and the other end abuts against the truncated slider 31. The inner strip 34 can be positioned.
[0061] Example 3
[0062] like Figure 4 and 5 As shown, in the structural mechanism of Embodiment 1 or Embodiment 2, when the length of the unit tube segment 3 is too long, such as more than 1m, multiple supports are often required in the middle of the unit tube segment 3.
[0063] At this point, multiple hooks 7 need to be installed along the length of the unit tube segment 3, and connected with multiple elastic rings 5.
[0064] Meanwhile, multiple intermediate cones 6 are also set on the central axis 1. The cone slider 31 on each unit tube 3 corresponds one-to-one with the intermediate cone 6. Each intermediate cone 6 supports the middle part of the unit tube 3 through its respective cone slider 31, thereby reducing the concave deformation of the unit tube 3.
[0065] When the unit segment 3 adopts the integrally formed structure in Embodiment 1, each hook 7 is also integrally formed to different positions of the unit segment 3, and multiple cone-shaped sliders 31 are also integrally formed to different positions of the unit segment 3.
[0066] When the unit segment 3 adopts the multi-component combination structure in Embodiment 2, multiple hooks 7 and multiple truncated sliders 31 are embedded in the dovetail groove 35 of each unit segment 3. The hooks 7 and truncated sliders 31 are alternately arranged. The hooks 7 and truncated sliders 31, the hooks 7 and the end connecting blocks 33, and the truncated sliders 31 and the end connecting blocks 33 are separated by inner strips 34. The inner strips 34 are embedded in the dovetail groove 35 of the unit segment 3, and the two ends of each inner strip 34 abut against two of the end connecting blocks 33, hooks 7, and truncated sliders 31.
[0067] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation; it is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this technology.
Claims
1. A device for preventing the center of a coil from concave, characterized in that: include: Central axis (1); The fixed truncated cone (4) is coaxially fixed on the central shaft (1); The movable cone (2) is coaxially mounted on the central axis (1) and can slide along the central axis (1). The small end of the movable cone (2) faces the small end of the fixed cone (4). The intermediate truncated cone (6) is coaxially fixed on the central shaft (1), and the orientation of the small end of the intermediate truncated cone (6) is consistent with the orientation of the small end of the fixed truncated cone (4). One end of the unit tube segment (3) abuts against the conical surface of the intermediate truncated cone (6), and the other end abuts against the conical surface of the movable truncated cone (2); a truncated cone slider (31) is provided on the inner side of the middle part of the unit tube segment (3), and the truncated cone slider (31) abuts against the conical surface of the intermediate truncated cone (6); several unit tube segments (3) are arranged in a ring around the central axis (1); The elastic ring (5) connects all the unit segments (3) and brings the unit segments (3) together toward the central axis (1).
2. The anti-concave-center winding device according to claim 1, characterized in that: The unit tube segment (3) is an integrally formed structure and is long and narrow; the frustum slider (31) is integrated with the unit tube segment (3); Alternatively, the unit segment (3) is a multi-component combination structure, including a long strip-shaped segment body (32), with end connecting blocks (33) detachably connected to both ends of the segment body (32), and a dovetail groove (35) provided on the inner side of the segment body (32), and the truncated cone slider (31) installed in the dovetail groove (35).
3. The anti-concave-center winding device according to claim 2, characterized in that: Inner protrusions (36) are provided at both ends of the unit tube segment (3), and the inner protrusions (36) slide in cooperation with the grooves on the cone surface of the fixed cone (4) or the movable cone (2); When the unit tube segment (3) is a one-piece molded structure, the inner protrusion (36) is located at the end of the unit tube segment (3); when the unit tube segment (3) is a multi-part assembly structure, the inner protrusion (36) is located on the end connecting block (33).
4. The anti-concave-center winding device according to claim 2, characterized in that: When the unit tube segment (3) is an integrally formed structure, hooks (7) are provided on the inner side of both ends of the unit tube segment (3), and the elastic ring (5) is attached to the hooks (7); when the unit tube segment (3) is a multi-part combination structure, the elastic ring (5) is installed in the arc groove on the end connecting block (33).
5. The anti-concave-center winding device according to claim 4, characterized in that: The dovetail groove (35) of the segment body (32) is provided with a hook (7) and an inner strip (34). One end of the inner strip (34) abuts against the end connecting block (33) or the hook (7), and the other end abuts against the cone slider (31).
6. The anti-concave-center winding device according to claim 2, characterized in that: An inner strip (34) is provided in the dovetail groove (35) of the segment body (32). One end of the inner strip (34) abuts against the end connecting block (33), and the other end abuts against the truncated cone slider (31).
7. The anti-center concavity winding device according to any one of claims 1-6, characterized in that: The intermediate cone (6) has multiple cones, and the cone slider (31) on each unit tube segment (3) corresponds one-to-one with the intermediate cone (6).
8. The anti-center concavity winding device according to any one of claims 1-6, characterized in that: A clamp (8) is fitted on the central shaft (1), and the clamp (8) abuts against the end face of the movable cone (2) to restrict the movement of the movable cone (2).
9. The anti-center concavity winding device according to any one of claims 1-6, characterized in that: The fixed truncated cone (4), the intermediate truncated cone (6), and the movable truncated cone (2) have the same taper value.