CN221700748U - A wire-releasing device with adjustable tension - Google Patents

Abstract

The utility model relates to a paying-off device with adjustable tensioning force. The device comprises a base, wherein a supporting seat is arranged on the base, a bearing seat is arranged at the top of the supporting seat, a rotating shaft is arranged in the bearing seat, a turntable is arranged at the inner end of the rotating shaft, an axial through threaded hole is formed in the center of the rotating shaft, an adjusting rod is arranged in the threaded hole, a movable connecting seat is arranged at the inner end of the adjusting rod, the adjusting rod is rotatably connected with the movable connecting seat, a fixed connecting seat is further arranged at the front part of the movable connecting seat, a plurality of telescopic X-shaped fork frames are arranged between the movable connecting seat and the fixed connecting seat, and expansion blocks are arranged at the outer sides of the X-shaped fork frames; also comprises an adjustable damping component acting on the rotating shaft. The paying-off device with adjustable tensioning force is reasonable in structural design and convenient to operate, paying-off damping can be adjusted and set, and proper tensioning force of copper wires/aluminum wires can be kept in the winding process by adjusting damping characteristics.

Description

A wire-releasing device with adjustable tension

Technical Field

The utility model belongs to the technical field of transformer production equipment, and in particular relates to a wire-releasing device with adjustable tensioning force.

Background Art

In the production process of transformers, the process of winding the iron core is involved. Iron core winding refers to the winding process of the coil winding outside the transformer core. For medium and large transformer products, the current winding process is still mainly manual/semi-automatic winding by skilled workers. Specifically, the winding mold (called the winding mold) is installed on the auxiliary winding equipment and can be controlled to rotate. The wire is released by the wire release device, and the winding position is manually adjusted to ensure the tightness of the winding.

Providing a certain pulling force to the copper wire/aluminum wire during the winding process will help ensure that the winding has a suitable tightness, and at the same time can reduce the work intensity for the winding workers. In actual operation, the pay-off device should provide a certain resistance force for the copper wire/aluminum wire, so that the copper wire/aluminum wire has a certain winding tension. The current pay-off device does not have the aforementioned function. On the other hand, when winding the coil windings of different transformer products, the tension required for the copper wire/aluminum wire is usually different. Therefore, it is also required that the damping characteristics provided by the pay-off device can be adjusted and set. Therefore, it is necessary to develop and design a new pay-off device to assist in the transformer core winding process.

Utility Model Content

The utility model provides a wire-releasing device with adjustable tension force, which has reasonable structural design and convenient operation, in order to solve the technical problems existing in the known technology. The wire-releasing damping can be adjusted and set. By adjusting the damping characteristics, the copper wire/aluminum wire can maintain appropriate tension force during the winding process.

The utility model adopts the following technical scheme to solve the technical problems existing in the known technology: a wire-releasing device with adjustable tensioning force comprises a base, a support base is installed on the base, a bearing base is installed on the top of the support base, a rotating shaft is installed in the bearing base, a turntable is installed at the inner end of the rotating shaft, an axially through-threaded hole is provided in the center of the rotating shaft, an adjusting rod is provided in the threaded hole, a movable connecting seat is installed at the inner end of the adjusting rod, the adjusting rod is rotatably connected to the movable connecting seat, a fixed connecting seat is also provided at the front of the movable connecting seat, a plurality of retractable X-shaped fork frames are installed between the movable connecting seat and the fixed connecting seat, and an expansion block is installed on the outer side of each X-shaped fork frame; and an adjustable damping component acting on the rotating shaft is also included.

Preferably: the adjustable damping assembly includes a support platform installed on the outside of the support seat, a damping support is installed on the support platform, a damping pressure block with a groove at the bottom is provided above the damping support and a damping rubber pad is provided in the groove, the damping rubber pad is in friction contact with the rotating shaft, and an adjusting screw is provided between the damping support and the damping pressure block.

Preferably: a groove is provided on the top of the damping support, and the lower part of the rotating shaft is located in the groove without contact; two left and right connecting holes are provided on the damping pressure block, and two left and right threaded holes are provided on the top of the damping support, and the middle part of the adjusting screw passes through the connecting hole and the lower end is located in the threaded hole.

Preferably: a central tube with multiple strip windows on the side wall is installed at the front of the turntable, an end sealing plate is installed at the front end of the central tube, the fixed connecting seat is fixed to the middle of the end sealing plate, and each X-shaped fork frame passes through each strip window respectively.

Preferably: multiple groups of ear plates are provided on the sides of the movable connecting seat and the fixed connecting seat, and a guide strip hole is provided at the rear of the expansion block. The X-shaped fork frame is composed of two fork arms hingedly connected in the middle, and the inner ends of the two fork arms are hingedly connected to the ear plates of the movable connecting seat and the fixed connecting seat respectively, the outer end of one of the fork arms is hingedly connected to the front of the expansion block, and the outer end of the other fork arm is provided with a guide pin shaft and the guide pin shaft is located in the guide strip hole.

Preferably, a plurality of radially extending guide grooves are provided on the body of the turntable, and the rear ends of the expansion blocks are respectively located in the guide grooves, and the rear ends of the expansion blocks are as wide as the guide grooves.

Preferably, a rubber pad is installed on the outer side of each expansion block.

The advantages and positive effects of the utility model are:

The utility model provides a wire-releasing device with adjustable tensioning force and reasonable structural design, which is used for assisting transformer core winding. Compared with the existing wire-releasing device, the wire-releasing device in the utility model realizes the expansion and fixation of the copper wire/aluminum wire reel by arranging a tensioning component composed of an X-shaped fork frame, a movable connecting seat, a fixed connecting seat and an expansion block. Only by operating the adjusting rod to move forward or backward along the axial direction of the rotating shaft, each expansion block can be moved outward or inward synchronously, so as to realize the expansion and release of the reel. The operation is convenient and the wire-releasing is stable.

By setting a damping component acting on the rotating shaft, the rotation of the aforementioned tensioning component is damped, so that the copper wire/aluminum wire can maintain a certain tension during the unwinding and winding process, which is conducive to ensuring that the coil winding has a suitable tightness and can reduce the work intensity of the winding workers. By making the damping component adjustable, the aforementioned damping effect can be adjusted and set according to the different requirements of different transformer products for the winding tension, thereby achieving adaptive adjustment of the winding tension for different transformer products.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the main structure of the utility model;

FIG2 is a schematic diagram of the external structure of the expansion assembly in FIG1;

FIG3 is a schematic diagram of the internal structure of the expansion assembly in FIG1;

FIG. 4 is a schematic structural diagram of the damping assembly in FIG. 1 .

In the figure:

1. Base; 2. Rubber pad; 3. Center tube; 3-1. Strip window; 4. End sealing plate; 5. X-shaped fork frame; 6. Expansion block; 6-1. Guide strip hole; 7. Turntable; 7-1. Guide groove; 8. Bearing seat; 9. Adjusting screw; 10. Damping pressure block; 11. Rotating shaft; 12. Adjusting rod; 13. Damping support; 14. Support table; 15. Support seat; 16. Movable connecting seat; 17. Fixed connecting seat; 18. Damping rubber pad.

DETAILED DESCRIPTION

In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

Please refer to Figure 1. The tension-adjustable pay-off device of the utility model comprises a base 1, a support seat 15 is mounted on the base 1, a bearing seat 8 is mounted on the top of the support seat 15, and a tensioning assembly is mounted on the bearing seat 8. The tensioning assembly is used to load the reel of the copper wire/aluminum wire, and the tensioning assembly can rotate. It also includes a damping assembly that applies a damping effect to the tensioning assembly, and the damping assembly causes the tensioning assembly to be subjected to a certain damping effect during the process of rotating the pay-off, thereby achieving the technical effect of tensioning the copper wire/aluminum wire after the pay-off.

Please refer to Figures 2 and 3 to see the structure of the expansion assembly:

A rotating shaft 11 is installed in the bearing seat 8, and a turntable 7 is installed at the inner end of the rotating shaft 11. An axially penetrating threaded hole is provided in the center of the rotating shaft 11, and an adjusting rod 12 is provided in the threaded hole. The adjusting rod 12 has an external thread, so the rotating shaft 11 and the adjusting rod 12 are threadedly connected. When the adjusting rod 12 is rotated, it can move forward or backward along the axial direction of the rotating shaft 11.

A movable connecting seat 16 is installed at the inner end of the adjusting rod 12, and the adjusting rod 12 is rotatably connected to the movable connecting seat 16. A fixed connecting seat 17 is also provided at the front of the movable connecting seat 16. A plurality of retractable X-shaped fork frames 5 are installed between the movable connecting seat 16 and the fixed connecting seat 17, and an expansion block 6 is installed on the outer side of each X-shaped fork frame 5.

The mobile connection seat 16 refers to a connection seat that can be driven by the adjustment rod 12 to move forward or backward. Since the adjustment rod 12 is rotatably connected to the mobile connection seat 16, when the adjustment rod 12 rotates, the adjustment rod 12 and the mobile connection seat 16 move synchronously in the axial direction, but the mobile connection seat 16 does not rotate. Specifically, an axial hole can be set at the rear center of the mobile connection seat 16, and the front end of the adjustment rod 12 is inserted into the axial hole and connected with a snap ring, so that the rotation of the adjustment rod 12 will not be transmitted to the mobile connection seat 16, and when the adjustment rod 12 moves axially, the mobile connection seat 16 moves forward or backward synchronously.

The fixed connection seat 17 refers to a connection seat whose position is fixed. In this embodiment, the center tube 3 is installed at the front of the turntable 7, the end sealing plate 4 is installed at the front end of the center tube 3, and the fixed connection seat 17 is installed and fixed at the middle of the end sealing plate 4. In this way, the center tube 3, the end sealing plate 4, the turntable 7 and the fixed connection seat 17 are combined into a whole.

When the mobile connecting seat 16 is driven forward or backward by the axial force of the adjusting rod 12, the distance between the mobile connecting seat 16 and the fixed connecting seat 17 decreases or increases, so that the retractable X-shaped fork frame 5 performs a retractable action. As shown in the figure, when the distance between the mobile connecting seat 16 and the fixed connecting seat 17 decreases, the X-shaped fork frame 5 becomes narrower and higher, so that each expansion block 6 moves outward synchronously. Conversely, when the distance between the mobile connecting seat 16 and the fixed connecting seat 17 increases, the X-shaped fork frame 5 becomes wider and shorter, so that each expansion block 6 moves inward synchronously.

In this embodiment, multiple groups of ear plates are provided on the sides of the mobile connection seat 16 and the fixed connection seat 17, and a guide strip hole 6-1 is provided on the rear of the expansion block 6. The X-shaped fork frame 5 is composed of two fork arms hingedly connected in the middle, and the inner ends of the two fork arms are hingedly connected to the ear plates of the mobile connection seat 16 and the fixed connection seat 17, respectively, and the outer end of one fork arm is hingedly connected to the front of the expansion block 6, and the outer end of the other fork arm is provided with a guide pin shaft and the guide pin shaft is located in the guide strip hole 6-1. When the X-shaped fork frame 5 performs a telescopic action, the guide pin shaft moves back and forth in the guide strip hole 6-1.

In this embodiment, a plurality of strip windows 3-1 are provided on the side wall of the central tube 3, and each X-shaped fork frame 5 passes through each strip window 3-1. In this way, the central tube 3 encloses the main body of each X-shaped fork frame 5 inside, which can prevent cables, operators' limbs, etc. from entering the internal space between each X-shaped fork frame 5 to a certain extent, avoid the problem of expansion component blocking, and improve the safety of operation.

In this embodiment, a plurality of radially extending guide grooves 7-1 are provided on the body of the rotating disk 7, and the rear ends of the expansion blocks 6 are respectively located in the guide grooves 7-1 and the rear ends of the expansion blocks 6 are as wide as the guide grooves 7-1. Thus, when the X-shaped forks 5 drive the expansion blocks 6 to move radially inward or outward synchronously, the guide grooves 7-1 limit and guide the rear ends of the expansion blocks 6, thereby improving the stability of the expansion assembly.

After each expansion block 6 moves outward synchronously, the copper wire/aluminum wire reel is loaded and fixed in an expanding manner. After the copper wire/aluminum wire is paid out, each expansion block 6 is operated to move inward synchronously to release the reel. In this embodiment, a rubber pad 2 is installed on the outside of each expansion block 6. When each expansion block 6 moves outward and contacts the inner wall of the reel, each rubber pad 2 will produce a certain deformation effect, which is beneficial to improving the combination stability between the reel and the tensioning assembly and improving the stability of the pay-out.

The damping component is an adjustable damping component acting on the rotating shaft 11 , that is, the damping effect is applied to the rotating shaft 11 , and the magnitude of the damping effect can be adjusted and set.

Refer to Figure 4, we can see that:

The adjustable damping assembly includes a support platform 14 installed outside a support seat 15, a damping support 13 is installed on the support platform 14, a damping pressure block 10 with a groove at the bottom is arranged above the damping support 13, and a damping rubber pad 18 is arranged in the groove, the damping rubber pad 18 is in friction contact with the rotating shaft 11, and an adjusting screw 9 is arranged between the damping support 13 and the damping pressure block 10. The magnitude of the damping effect is adjusted by operating the adjusting screw 9.

As shown in the figure, a groove is provided at the top of the damping support 13, and the lower part of the rotating shaft 11 is located in the groove without contacting, which helps to improve the structural compactness of the damping assembly. Two left and right connecting holes are provided on the damping pressure block 10, and two left and right threaded holes are provided on the top of the damping support 13. The middle parts of the two adjusting screws 9 pass through the two connecting holes respectively and the lower ends are located in the two threaded holes respectively. When adjusting, a tool such as a wrench is used to operate the adjusting screw 9 to rotate, and a greater or lesser pressure is applied to the damping pressure block 10, so that the damping rubber pad 18 is subjected to a greater or lesser pressure, providing a greater or lesser damping effect on the rotating shaft 11, thereby realizing the adjustment of the pay-off tension of the copper wire/aluminum wire.

Directions:

Load the reel of copper wire/aluminum wire onto the expansion assembly. Specifically, move each expansion block 6 inward synchronously to reduce the outer diameter, then insert the front part of the expansion assembly into the reel, then operate the adjustment rod 12 to rotate, the adjustment rod 12 drives the movable connection seat 16 to move forward, then the distance between the movable connection seat 16 and the fixed connection seat 17 is reduced, each expansion block 6 moves outward synchronously until each rubber pad 2 contacts the inner wall of the reel and generates a suitable tightening force, then the reel is stably combined with the front part of the expansion assembly;

Pull the copper wire/aluminum wire to unwind and combine the end of the copper wire/aluminum wire with the winding mold, operate the auxiliary winding equipment to drive the winding mold to rotate, and the copper wire/aluminum wire is wound on the winding mold. The on-site operator determines whether the winding tension force is appropriate based on the preliminary winding situation. If the winding tension force is too large or too small, operate the adjusting screw 9 of the damping assembly to make the damping rubber pad 18 subject to smaller or larger pressure, thereby providing smaller or larger damping effect on the rotating shaft 11.

Claims (7)

1. An adjustable tensioning force pay-off device, characterized by: the device comprises a base (1), wherein a supporting seat (15) is arranged on the base (1), a bearing seat (8) is arranged at the top of the supporting seat (15), a rotating shaft (11) is arranged in the bearing seat (8), a rotary table (7) is arranged at the inner end of the rotating shaft (11), an axially through threaded hole is arranged in the center of the rotating shaft (11), an adjusting rod (12) is arranged in the threaded hole, a movable connecting seat (16) is arranged at the inner end of the adjusting rod (12), the adjusting rod (12) is rotatably connected with the movable connecting seat (16), a fixed connecting seat (17) is further arranged at the front part of the movable connecting seat (16), a plurality of telescopic X-shaped fork frames (5) are arranged between the movable connecting seat (16) and the fixed connecting seat (17), and expansion blocks (6) are arranged at the outer sides of the X-shaped fork frames (5); also comprises an adjustable damping component acting on the rotating shaft (11).

2. The tension-adjustable pay-off device of claim 1, wherein: the adjustable damping assembly comprises a supporting table (14) arranged on the outer side of a supporting seat (15), a damping support (13) is arranged on the supporting table (14), a damping pressing block (10) with a groove at the bottom is arranged above the damping support (13), a damping rubber pad (18) is arranged in the groove, the damping rubber pad (18) is in friction contact with a rotating shaft (11), and an adjusting screw (9) is arranged between the damping support (13) and the damping pressing block (10).

3. The tension-adjustable pay-off device of claim 2, wherein: the top of the damping support (13) is provided with a groove, and the lower part of the rotating shaft (11) is positioned in the groove and is not contacted with the groove; the damping pressing block (10) is provided with a left connecting hole and a right connecting hole, the top of the damping support (13) is provided with a left threaded hole and a right threaded hole, and the middle part of the adjusting screw (9) penetrates through the connecting holes and the lower end of the adjusting screw is positioned in the threaded hole.

4. A tension-adjustable pay-off device as defined in claim 3, wherein: the front part of the turntable (7) is provided with a central cylinder (3) with a plurality of strip-shaped windows (3-1) on the side wall, the front end of the central cylinder (3) is provided with an end sealing plate (4), a fixed connecting seat (17) is fixedly arranged in the middle of the end sealing plate (4), and each X-shaped fork frame (5) respectively penetrates out of each strip-shaped window (3-1).

5. The tension-adjustable pay-off device of claim 4, wherein: the side parts of the movable connecting seat (16) and the fixed connecting seat (17) are provided with a plurality of groups of lug plates, the rear part of the expansion block (6) is provided with a guide strip-shaped hole (6-1), the X-shaped fork frame (5) is composed of two fork arms hinged at the middle part, the inner ends of the two fork arms are respectively hinged with the lug plates of the movable connecting seat (16) and the fixed connecting seat (17), the outer end of one fork arm is hinged with the front part of the expansion block (6), and the outer end of the other fork arm is provided with a guide pin shaft which is positioned in the guide strip-shaped hole (6-1).

6. The tension-adjustable pay-off device of claim 5, wherein: a plurality of guide grooves (7-1) extending in the radial direction are arranged on the disk body of the rotary disk (7), the rear ends of the expansion blocks (6) are respectively positioned in the guide grooves (7-1), and the rear ends of the expansion blocks (6) are equal to the guide grooves (7-1) in width.

7. The tension-adjustable pay-off device of claim 6, wherein: rubber cushion blocks (2) are arranged on the outer sides of the expansion blocks (6).