Pay-off magnetic damping mechanism

By embedding permanent magnets on the fixed base and using magnetic adsorption force to dampen the metal disk, the excessive rotation problem caused by inertia of the yarn release device is solved, and the stability and reliability of the yarn release are achieved.

CN223060362UActive Publication Date: 2025-07-04SHANGHAI JIANJIAN WIRE ELECTRIC APPLIANCE CO LTD
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Patent Information

Application Number
CN202422385258.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-07-04
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

When the existing yarn laying device rotates under yarn traction, the yarn wheel rotates excessively due to changes in yarn tension or inertia, causing problems such as unstable yarn tension, broken wire or winding.

Method used

Multiple permanent magnets are embedded on the fixed base, and the magnetic adsorption force of the permanent magnets can be used to dampen the metal disk to prevent excessive rotation caused by inertia of the wire-discharge roller.

Benefits of technology

It effectively prevents excessive rotation caused by inertia of the wire-release roller, reduces yarn tension fluctuations, broken wires and winding, and ensures the stability of yarn wire-release.

✦ Generated by Eureka AI based on patent content.

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Abstract

A pay-off magnetic damping mechanism comprises a fixed base and a bearing assembly, a mounting groove hole is formed in the fixed base, and a hollow column is arranged in the middle of the mounting groove hole; a plurality of permanent magnets are embedded in the upper surface of the fixed base; the bearing assembly comprises a bearing rod, a metal disc is arranged on the outer surface of the bearing rod, and the metal disc divides the bearing rod into an upper bearing rod and a lower bearing rod; a rotating strut is arranged below the metal disc, a rotating notch with an opening in the lower end is formed in the middle of the rotating strut, and the upper end of the hollow column is rotationally connected into the rotating notch; the lower bearing rod is movably inserted into a hollow cavity of the hollow column, and the outer surface of the upper bearing rod is sleeved with a pay-off roller; and a locking piece is arranged on the upper bearing rod. According to the utility model, the defects in the prior art are overcome; the plurality of permanent magnets are embedded on the fixed base; therefore, a certain damping effect can be generated on the metal disc through the magnetic adsorption force of the permanent magnet, and the problem of excessive rotation of the pay-off roller due to inertia is effectively prevented.
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Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a production tool for heating wires, specifically a wire pay-off magnetic damping mechanism. Background Art

[0002] In the production process of heating wires, the pay-off of the yarn is one of the key steps. Its stability and accuracy directly affect the final quality of the heating wire. The existing yarn pay-off devices are usually composed of a mounting base and a bearing rod installed on the base for sleeving the yarn reel. During its operation, the yarn wheel rotates under the traction of the yarn, but often due to the change of yarn tension or inertia, the yarn wheel rotates excessively, resulting in problems such as unstable yarn tension, broken yarn or winding. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a wire pay-off magnetic damping mechanism, which overcomes the deficiencies of the prior art, is reasonably designed, and has a plurality of permanent magnets embedded on the fixed base; thus, a certain damping effect can be generated on the metal disc through the magnetic adsorption force of the permanent magnets, effectively preventing the problem that the pay-off roller rotates excessively due to inertia.

[0004] To achieve the above object, the utility model is realized through the following technical solutions:

[0005] A wire pay-off magnetic damping mechanism includes a fixed base and a bearing assembly. An installation slot hole is opened in the middle of the upper surface of the fixed base. A hollow column is arranged in the middle of the installation slot hole. The upper end of the hollow column is open and the lower end is closed. The lower end of the hollow column passes through the fixed base and extends below the fixed base; a number of permanent magnets are fixedly embedded on the upper surface of the fixed base;

[0006] The bearing assembly includes a bearing rod. A metal disc is fixedly connected to the outer surface of the bearing rod. The metal disc divides the bearing rod into an upper bearing rod and a lower bearing rod. The lower surface of the metal disc corresponds to the upper surface of the fixed base up and down; a rotating support column is arranged below the metal disc. The rotating support column is rotatably connected in the installation slot hole. A rotating slot opening with an open lower end is opened in the middle of the rotating support column. The upper end of the hollow column is rotatably connected in the rotating slot opening; the lower bearing rod is movably inserted into the hollow cavity of the hollow column. The outer surface of the upper bearing rod is sleeved with a pay-off roller; a locking member is arranged on the upper bearing rod, and the locking member is used to lock the pay-off roller.

[0007] Preferably, the fixed base includes a mounting seat and a support ring. The mounting seat is fixedly installed on the wire pay-off rack by bolts. A threaded post is fixedly installed on the upper surface of the mounting seat. An external thread is provided on the outer surface of the threaded post. An internal threaded hole is formed in the middle of the support ring. The support ring is connected to the external thread of the threaded post through the internal threaded hole. An installation slot hole with an upper end opening is formed in the middle of the threaded post. The permanent magnet is fixedly embedded in the upper surface of the support ring.

[0008] Preferably, the locking member includes a friction post and a friction wedge. The friction post is fixedly sleeved above the upper bearing rod. A through hole penetrating up and down is formed in the middle of the friction wedge. The through hole is movably sleeved on the outer surface of the friction post. The lower section of the friction wedge is arranged in a frustum-shaped structure with a wider upper part and a narrower lower part.

[0009] Preferably, a limiting frustum is arranged in the middle of the upper surface of the metal disc. The limiting frustum is in a frustum-shaped structure with a narrower upper part and a wider lower part.

[0010] Preferably, a support ring is arranged at the lower end of the outer surface of the rotating support column. The outer diameter of the support ring is the same as the inner diameter of the installation slot hole.

[0011] Preferably, a limiting ring is arranged in the middle of the outer surface of the rotating support column. The outer diameter of the limiting ring is the same as the inner diameter of the installation slot hole.

[0012] Preferably, the hollow cavity of the hollow column is filled with lubricating oil.

[0013] The present utility model provides a wire pay-off magnetic damping mechanism, which has the following beneficial effects: By embedding a plurality of permanent magnets along the circumference on the upper surface of the fixed base, a magnetic force action area is formed between the permanent magnets and the metal disc. Thus, when the metal disc rotates, a certain damping effect can be generated on the metal disc through the magnetic adsorption force of the permanent magnets, effectively preventing the problem of excessive rotation of the wire pay-off roller due to inertia, and then reducing the occurrence of problems such as yarn tension fluctuation, yarn breakage, and winding. Thereby effectively ensuring the stability of wire pay-off of the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0015] Figure 1 Structure schematic diagram of the present utility model;

[0016] Figure 2 Cross-sectional schematic diagram of the present utility model;

[0017] Figure 3 Structure schematic diagram of the cooperation and installation of the bearing rod and the wire pay-off roller in the present utility model;

[0018] Description of reference numerals in the figure:

[0019] 1. Fixed base; 2. Installation slot hole; 3. Hollow column; 4. Permanent magnet; 5. Bearing rod; 51. Upper bearing rod; 52. Lower bearing rod; 6. Metal disc; 61. Limiting round table; 7. Rotating support column; 71. Support ring; 72. Limiting ring; 8. Rotating slot; 9. Wire-releasing drum; 11. Mounting seat; 12. Support ring; 13. Threaded column; 14. Friction column; 15. Friction wedge; 16. Through hole. Detailed implementation manner

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model.

[0021] Example 1, as Figures 1-3 shown, a wire-releasing magnetic damping mechanism includes a fixed base 1 and a bearing assembly. An installation slot hole 2 is provided in the middle of the upper surface of the fixed base 1. A hollow column 3 is fixedly installed in the middle of the installation slot hole 2. The upper end of the hollow column 3 is open and the lower end is closed. The lower end of the hollow column 3 passes through the fixed base 1 and extends below the fixed base 1; a plurality of permanent magnets 4 are fixedly embedded on the upper surface of the fixed base 1;

[0022] The bearing assembly includes a bearing rod 5. A metal disc 6 is fixedly connected to the outer surface of the bearing rod 5. The metal disc 6 divides the bearing rod 5 into an upper bearing rod 51 and a lower bearing rod 52. The lower surface of the metal disc 6 corresponds to the upper surface of the fixed base 1 up and down, and a certain gap is reserved between the metal disc 6 and the fixed base 1; a rotating support column 7 is provided below the metal disc 6. The rotating support column 7 is rotatably connected in the installation slot hole 2. A rotating slot 8 with an open lower end is provided in the middle of the rotating support column 7. The upper end of the hollow column 3 is rotatably connected in the rotating slot 8; the lower bearing rod 52 is movably inserted into the hollow cavity of the hollow column 3. The outer surface of the upper bearing rod 51 is sleeved with a wire-releasing drum 9; a locking member is provided on the upper bearing rod 51, and the locking member is used to lock the wire-releasing drum 9.

[0023] Working principle:

[0024] During use, first insert the lower bearing rod 52 into the hollow cavity of the hollow column 3 so that the rotating support column 7 is inserted into the installation slot hole 2; and the metal disc 6 corresponds to the upper surface of the fixed base 1. And in this embodiment, the height of the rotating support column 7 can be slightly higher than the height of the installation slot hole 2, so that a certain gap is reserved between the metal disc 6 and the upper surface of the fixed base 1, so that the metal disc 6 and the fixed base 1 do not directly contact; then, the wire-releasing drum 9 is sleeved on the outer surface of the upper bearing rod 51 and locked and fixed with a locking member.

[0025] During the process of unwinding the yarn, the unwinding roller 9 will rotate under the traction force of the yarn, and then drive the entire carrier rod 5 to rotate, and then cause the metal disc 6 and the rotating support column 7 to rotate relative to the fixed base 1. In this embodiment, a plurality of permanent magnets 4 are embedded along the circumference on the upper surface of the fixed base 1, so that a magnetic force action area is formed between the permanent magnets 4 and the metal disc 6; thus, when the metal disc 6 rotates, the magnetic adsorption force of the permanent magnets 4 can be used to generate a certain damping effect on the metal disc 6, thereby effectively preventing the problem that the unwinding roller 9 rotates excessively due to inertia, and then reducing the occurrence of problems such as yarn tension fluctuation, yarn breakage, and winding. Then, the stability of yarn unwinding is effectively ensured.

[0026] Embodiment 2, as a further preferred solution of Embodiment 1, the fixed base 1 includes a mounting seat 11 and a support ring 12. The mounting seat 11 is fixedly installed on the unwinding frame by bolts. A threaded column 13 is fixedly installed on the upper surface of the mounting seat 11. The outer surface of the threaded column 13 is provided with an external thread. An internal threaded hole is formed in the middle of the support ring 12. The support ring 12 is connected to the external thread of the threaded column 13 through the internal threaded hole; an installation slot hole 2 with an upper opening is formed in the middle of the threaded column 13, and the permanent magnet 4 is fixedly embedded on the upper surface of the support ring 12. Thus, when manufacturing the fixed base 1, the mounting seat 11 and the support ring 12 can be respectively manufactured, so as to greatly simplify the production process of the fixed base 1.

[0027] Embodiment 3, as a further preferred solution of Embodiment 1, the locking member includes a friction column 14 and a friction wedge 15. The friction column 14 is fixedly sleeved above the upper carrier rod 51. A through hole 16 penetrating up and down is formed in the middle of the friction wedge 15. The through hole 16 is movably sleeved on the outer surface of the friction column 14. The lower part of the friction wedge 15 is set as a frustum-shaped structure with an upper wide and lower narrow shape.

[0028] Therefore, after the unwinding roller 9 is sleeved on the outer surface of the upper carrier rod 51, the friction wedge 15 can be sleeved on the friction column 14 from above the upper carrier rod 51, so that the frustum surface of the friction wedge 15 abuts against the unwinding roller 9, and the through hole 16 in the middle of the friction wedge 15 is sleeved on the outer surface of the friction column 14. Thus, through the frictional force between the friction wedge 15 and the friction column 14, the unwinding roller 9 can be locked on the outer surface of the upper carrier rod 51.

[0029] Embodiment 4, as a further preferred solution of Embodiment 3, a limiting frustum 61 is arranged in the middle of the upper surface of the metal disc 6. The limiting frustum 61 is a frustum-shaped structure with an upper narrow and lower wide shape. The limiting frustum 61 can abut against the through hole at the center of the lower surface of the unwinding roller 9. Thus, through the mutual cooperation of the limiting frustum 61 and the friction wedge 15, the unwinding roller 9 can be stably fixed between the limiting frustum 61 and the friction wedge 15. Avoid the problem that the unwinding roller 9 shakes during the unwinding process.

[0030] Embodiment Five, as a further preferred solution of Embodiment One, a support ring 71 is provided at the lower end of the outer surface of the rotating pillar 7, and the outer diameter of the support ring 71 is the same as the inner diameter of the mounting slot hole 2. The position of the rotating pillar 7 can be limited through the support ring 71 to prevent radial offset of the rotating pillar 7 when it rotates in the mounting slot hole 2. In this embodiment, an arc chamfer can be provided below the outer surface of the support ring 71 so that when the rotating pillar 7 is inserted into the mounting slot hole 2, it can be guided through the arc chamfer, facilitating the quick insertion of the rotating pillar 7 into the mounting slot hole 2.

[0031] Embodiment Six, as a further preferred solution of Embodiment Five, a limiting ring 72 is provided in the middle of the outer surface of the rotating pillar 7, and the outer diameter of the limiting ring 72 is the same as the inner diameter of the mounting slot hole 2. Through the mutual cooperation of the limiting ring 72 and the support ring 71, the stability of the rotating pillar 7 when rotating in the mounting slot hole 2 can be further ensured.

[0032] Embodiment Seven, as a further preferred solution of Embodiment One, the hollow cavity of the hollow column 3 is filled with lubricating oil. The bearing rod 5 is separated into an upper bearing rod 51 and a lower bearing rod 52 by 6, and the lower bearing rod 52 is inserted into the hollow cavity of the hollow column 3, thereby playing a limiting role on the whole bearing rod 5. When the upper bearing rod 51 is subjected to the traction force of the yarn, the limiting effect of the lower bearing rod 52 in the hollow cavity of the hollow column 3 can be used to effectively prevent the bearing rod 5 from deviating in angle. By filling the hollow cavity of the hollow column 3 with lubricating oil, the friction between the lower bearing rod 52 and the inner wall of the hollow cavity of the hollow column 3 can be effectively reduced, enabling the lower bearing rod 52 to rotate stably in the hollow cavity of the hollow column 3.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire-releasing magnetic damping mechanism, characterized in that: It includes a fixed base (1) and a bearing component. An installation slot hole (2) is provided in the middle of the upper surface of the fixed base (1). A hollow column (3) is arranged in the middle of the installation slot hole (2). The upper end of the hollow column (3) is open and the lower end is closed. The lower end of the hollow column (3) passes through the fixed base (1) and extends below the fixed base (1). A number of permanent magnets (4) are fixedly embedded in the upper surface of the fixed base (1). The bearing component includes a bearing rod (5). A metal disc (6) is fixedly connected to the outer surface of the bearing rod (5). The metal disc (6) divides the bearing rod (5) into an upper bearing rod (51) and a lower bearing rod (52). The lower surface of the metal disc (6) corresponds to the upper surface of the fixed base (1) up and down. A rotating support column (7) is arranged below the metal disc (6). The rotating support column (7) is rotatably connected in the installation slot hole (2). A rotating slot opening (8) with an open lower end is provided in the middle of the rotating support column (7). The upper end of the hollow column (3) is rotatably connected in the rotating slot opening (8). The lower bearing rod (52) is movably inserted into the hollow cavity of the hollow column (3). A wire pay-off reel (9) is sleeved on the outer surface of the upper bearing rod (51). A locking member is arranged on the upper bearing rod (51), and the locking member is used to lock the wire pay-off reel (9).

2. A pay-off magnetic damping mechanism according to claim 1, characterized in that: The fixed base (1) includes an installation base (11) and a support ring (12). The installation base (11) is fixedly installed on the wire pay-off rack by bolts. A threaded column (13) is fixedly installed on the upper surface of the installation base (11). An external thread is provided on the outer surface of the threaded column (13). An internal threaded hole is provided in the middle of the support ring (12). The support ring (12) is connected to the external thread of the threaded column (13) through the internal threaded hole. An installation slot hole (2) with an open upper end is provided in the middle of the threaded column (13). The permanent magnet (4) is fixedly embedded in the upper surface of the support ring (12).

3. The wire-feeding magnetic damping mechanism according to claim 1, characterized in that: The locking member includes a friction column (14) and a friction wedge (15). The friction column (14) is fixedly sleeved above the upper bearing rod (51). A through hole (16) that penetrates up and down is provided in the middle of the friction wedge (15). The through hole (16) is movably sleeved on the outer surface of the friction column (14). The lower section of the friction wedge (15) is arranged in a frustum-shaped structure that is wider at the top and narrower at the bottom.

4. A pay-off magnetic damping mechanism according to claim 3, characterized in that: A limiting frustum (61) is arranged in the middle of the upper surface of the metal disc (6). The limiting frustum (61) is arranged in a frustum-shaped structure that is narrower at the top and wider at the bottom.

5. The wire-releasing magnetic damping mechanism according to claim 1, characterized in that: A support ring (71) is arranged at the lower end of the outer surface of the rotating support column (7). The outer diameter of the support ring (71) is the same as the inner diameter of the installation slot hole (2).

6. A pay-off magnetic damping mechanism according to claim 5, characterized in that: A limiting ring (72) is arranged in the middle of the outer surface of the rotating support column (7). The outer diameter of the limiting ring (72) is the same as the inner diameter of the installation slot hole (2).

7. A pay-off magnetic damping mechanism according to claim 1, characterized in that: The hollow cavity of the hollow column (3) is filled with lubricating oil.