CN220155374U - Tensioning tool for foil winding machine - Google Patents

Abstract

The utility model relates to the technical field of transformers, and particularly discloses a foil winding machine tensioning tool which comprises a pair of brackets, turntables hinged to the brackets respectively, a pair of compression rollers positioned between the two turntables, a pair of torsion springs and a pair of adjusting seats connected with the brackets, wherein the turntables and the adjusting seats are coaxially arranged, and the torsion springs are positioned between the turntables and the adjusting seats. The foil strip sequentially passes through the discharging roller and the tensioning tool, and finally is wound on the coil framework, the pair of compression rollers respectively move up and down under the driving of the torsion springs, the foil strip is lifted on one side, the foil strip is pressed on the other side, and the foil strip is tensioned. When the far point and the near point of the coil skeleton are changed in high frequency and large amplitude, the pair of pressing rollers (turntables) can properly swing back and forth to continuously tension the foil strip, so that the foil strip can be tightly wound on the coil skeleton.

Description

Tensioning tool for foil winding machine

Technical Field

The utility model belongs to the technical field of transformers, and particularly relates to a tensioning tool of a foil winding machine.

Background

In the running process of the transformer, the wires of the coil can vibrate under the action of electric force, so that the insulation performance of the transformer with uneven tightness among the coil layers is often damaged by vibration force, and the transformer coil has higher requirement on the tightness uniformity of the coil layers in the winding process, in particular to a foil coil. When the existing foil winding machine winds a coil, due to the fact that the width of the copper foil is large, mechanical tension is large, a coil roller can generate jumping when the coil is wound, so that the foil is relaxed to a large extent, the physical size of the coil is difficult to control, the electric performance of the coil is seriously affected by the inter-turn looseness, and potential safety hazards exist in the operation process of the transformer.

The prior art CN205487745U, a tensioning device of a foil winding machine, discloses a scheme of a flattening roller, a flattening arm and a tension spring, and the flattening roller is attached to a turntable by utilizing elasticity. However, part of the transformer coil frameworks are elliptical or rectangular, the far points and the near points of the coil frameworks repeatedly change when rotating, the frequency is high, and the drop is large; if a flattening roller is used to attach the coil former, the flattening roller can swing back and forth to generate additional vibration and impact. There remains a need to discuss the problem of winding tension.

Disclosure of Invention

The utility model aims to provide a foil winding machine tensioning tool which can fully tension foil without a contact coil skeleton.

In order to achieve the above object, the present utility model provides a tensioning tool for a foil winding machine, comprising: the pair of brackets, respectively articulated in carousel, a pair of being located two between the carousel, a pair of torsional spring and a pair of regulation seat of support upper end, two the carousel is coaxial to be set up, the support with be provided with the bearing between the carousel, two compression roller parallel arrangement, two the compression roller is located the opposite ends of carousel same diameter direction, foil strip follow two pass between the compression roller, two the regulation seat be solid of revolution structure, with the axial lead of carousel coaxial, set up in the support is relative the opposite side of carousel, the torsional spring set up in the carousel with between the regulation seat two under the drive of torsional spring the compression roller has the power of buckling, tensioning foil strip.

As an improvement of the above solution, the adjusting seat is fixed to the bracket by a plurality of bolts uniformly distributed around the circumference thereof.

As the improvement of above-mentioned scheme, the support with be provided with the bearing between the regulation seat, but the regulation seat spins, tensioning frock still includes end cover, turbine worm drive group and motor, the end cover is connected the support and from axial direction shutoff regulation seat, the one end of regulation seat passes connect the turbine behind the end cover, the turbine with the coaxial setting of regulation seat, after the motor drive worm is rotatory, through rotatory turbine change the angle of regulation seat, thereby change the initial torque of torsional spring.

As the improvement of above-mentioned scheme, the support with be provided with the bearing between the regulation seat, but the regulation seat spins, tensioning frock still includes end cover, rack and pinion drive group and electric putter, the end cover is connected the support and from axial direction shutoff the regulation seat, the one end of regulation seat passes behind the end cover connect the gear, the gear with the coaxial setting of regulation seat, electric putter drive rack removes the back, through rotatory gear change the angle of regulation seat, thereby change the initial torque of torsional spring.

As an improvement of the scheme, the diameter of the two pressing rollers is 5-10cm, and the axle center distance of the two pressing rollers is 10-20cm.

The utility model has the following beneficial effects:

the foil strip sequentially passes through the discharging roller and the tensioning tool, and finally is wound on the coil framework, the pair of compression rollers respectively move up and down under the driving of the torsion springs, the foil strip is lifted on one side, the foil strip is pressed on the other side, and the foil strip is tensioned. When the far point and the near point of the coil skeleton are changed in high frequency and large amplitude, the pair of pressing rollers (turntables) can properly swing back and forth to continuously tension the foil strip, so that the foil strip can be tightly wound on the coil skeleton. The adjusting seat can select a scheme of active rotation adjustment, adjusts the initial position of one side of the torsion spring, and then adjusts the tension of the foil strip.

Drawings

FIG. 1 is a schematic diagram of a tensioning tool in use according to one embodiment;

FIG. 2 is a schematic diagram of a tensioning tooling part under an embodiment;

FIG. 3 is a schematic view of the adjustment seat in the first embodiment;

fig. 4 is a schematic view of an adjusting seat in a second embodiment.

Reference numerals illustrate: 11. a bracket; 12. a turntable; 13. a press roller; 14. a torsion spring; 15. an adjusting seat; 21. an end cap; 22. a worm gear drive set; 23. a motor; 31. a foil strip; 32. a discharge roller; 33. and a coil bobbin.

Detailed Description

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The terms "first," "second," "third," and the like, if any, are used for descriptive purposes only and for distinguishing between technical features and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

Referring to fig. 1 to 4, the utility model discloses a foil winding machine tensioning tool, which comprises: the pair of brackets 11, respectively articulated in carousel 12, a pair of being located two between the carousel 12 press roll 13, a pair of torsional spring 14 and a pair of adjusting seat 15, two carousel 12 coaxial arrangement, support 11 with be provided with the bearing between the carousel 12, two press roll 13 parallel arrangement, two press roll 13 are located carousel 12 same diameter direction's opposite ends, foil strip 31 passes from two press roll 13 between, two adjusting seat 15 are solid of revolution structure, with the axial lead coaxial of carousel 12 set up in support 11 is relative the opposite side of carousel 12, torsional spring 14 set up in between carousel 12 with adjusting seat 15, two press roll 13 have the power of buckling, tensioning foil strip 31 under the drive of torsional spring 14.

The tensioning tool is mounted in use between the take-off roller 32 of the foil strip 31 and the coil former 33. As shown in fig. 1, the torsion spring 14 provides a movement margin, and the turntable 12 can swing clockwise or counterclockwise to adapt to a rectangular or elliptical coil bobbin 33.

In the scheme of the utility model, in order to balance the stress of the two turntables 12, torsion springs 14 are arranged between the two turntables 12 and the corresponding side of the bracket 11, and the same structural layout is adopted.

As a modification of the above, the adjusting seat 15 is fixed to the bracket 11 by a plurality of bolts uniformly distributed around the circumference thereof. In this case, after the adjustment seat 15 is fixed, the initial position of one end of the torsion spring 14 is not changed.

As an improvement of the above scheme, in order to be able to adjust the tension, at least one further press roller 13 is further disposed between the two turntables 12, and the plurality of press rollers 13 are distributed around the circumference of the turntables 12, at this time, the foil strips 31 may be selected to pass through two of the press rollers 13, and different adjustment gears are formed by utilizing different characteristics of different angles of the press rollers 13.

As an improvement of the above scheme, a bearing is disposed between the bracket 11 and the adjusting seat 15, the adjusting seat 15 is rotatable, the tensioning tool further comprises an end cover 21, a worm and gear transmission set 22 and a motor 23, the end cover 21 is connected with the bracket 11 and seals the adjusting seat 15 from the axial direction, one end of the adjusting seat 15 passes through the end cover 21 and then is connected with a turbine, the turbine and the adjusting seat 15 are coaxially disposed, and after the motor 23 drives the worm to rotate, the angle of the adjusting seat 15 is changed through the rotating turbine, so that the initial torque of the torsion spring 14 is changed. There is self-locking between the worm and the worm wheel, and the worm wheel can be driven by a conventional motor 23, so that the shaking of the adjusting seat 15 is not required. As shown in fig. 4, the end cap 21 covers the bearing at the same time.

As an improvement of the above scheme, a bearing is disposed between the support 11 and the adjusting seat 15, the adjusting seat 15 is capable of rotating, the tensioning tool further comprises an end cover 21, a gear rack transmission set and an electric push rod, the end cover 21 is connected with the support 11 and seals the adjusting seat 15 from the axial direction, one end of the adjusting seat 15 penetrates through the end cover 21 and then is connected with a gear, the gear is coaxially disposed with the adjusting seat 15, and after the electric push rod drives the rack to move, the angle of the adjusting seat 15 is changed through the rotating gear, so that the initial torque of the torsion spring 14 is changed. The electric push rod can be self-locked, and the shaking of the adjusting seat 15 is not required to be worried about.

As a modification of the above, the diameter of the two press rolls 13 is 5-10cm, and the axial center distance of the two press rolls 13 is 10-20cm.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims (5)

1. Foil winding machine tensioning frock, its characterized in that includes: the pair of brackets, respectively articulated in carousel, a pair of being located two between the carousel, a pair of torsional spring and a pair of regulation seat of support upper end, two the carousel is coaxial to be set up, the support with be provided with the bearing between the carousel, two compression roller parallel arrangement, two the compression roller is located the opposite ends of carousel same diameter direction, foil strip follow two pass between the compression roller, two the regulation seat be solid of revolution structure, with the axial lead of carousel coaxial, set up in the support is relative the opposite side of carousel, the torsional spring set up in the carousel with between the regulation seat two under the drive of torsional spring the compression roller has the power of buckling, tensioning foil strip.

2. The foil winding machine tensioning tooling of claim 1, wherein: the adjusting seat is fixed on the bracket through a plurality of bolts which are uniformly distributed around the circumference of the adjusting seat.

3. The foil winding machine tensioning tooling of claim 1, wherein: the support with be provided with the bearing between the regulation seat, but the regulation seat spins, tensioning frock still includes end cover, turbine worm drive group and motor, the end cover is connected the support and from axial direction shutoff the regulation seat, the one end of adjusting the seat passes connect the turbine behind the end cover, the turbine with the coaxial setting of regulation seat, motor drive worm is rotatory after, changes through rotatory turbine the angle of adjusting the seat, thereby change the initial torque of torsional spring.

4. The foil winding machine tensioning tooling of claim 1, wherein: the support with be provided with the bearing between the regulation seat, but the regulation seat spins, tensioning frock still includes end cover, rack and pinion drive group and electric putter, the end cover is connected the support and from axial direction shutoff the regulation seat, the one end of adjusting the seat passes connect the gear behind the end cover, the gear with the coaxial setting of regulation seat, electric putter drive rack removes the back, through rotatory gear change the angle of adjusting the seat, thereby change the initial torque of torsional spring.

5. Foil winding machine tensioning tooling according to any one of claims 2 to 4, characterized in that: the diameters of the two pressing rollers are 5-10cm, and the axial center distance of the two pressing rollers is 10-20cm.