CN110217630B

CN110217630B - Tension damper

Info

Publication number: CN110217630B
Application number: CN201910483731.9A
Authority: CN
Inventors: 马秀花
Original assignee: Yangtze University College of Technology and Engineering
Current assignee: Yangtze University College of Technology and Engineering
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-10-02
Anticipated expiration: 2039-06-05
Also published as: CN110217630A

Abstract

The invention provides a tension damper.A balancing pole is rotatably arranged on a balancing seat, and the balancing seat is provided with an angle sensor for detecting the rotating angle of the balancing pole; the balance rod is characterized in that a rotating shaft center of the balance seat is taken as a boundary, one end of the balance rod is provided with a damper, and the damper is used for providing advancing resistance for wires or strips; the other end of the balance bar is provided with a slide block device which can adjust the position along the balance bar. By adopting the balance rod type structure, the tension applied to the wire or the strip can be very accurately adjusted, so that the wire or the strip production line with very high precision requirements can be used, the tension can be controlled, meanwhile, the resistance to the wire or the strip can be controlled, the running speed of the wire or the strip is ensured to be constant, the received tension is kept constant, and the production quality of the high-precision wire or the strip is improved.

Description

Tension damper

Technical Field

The invention relates to the field of tension dampers, in particular to a tension damper with adjustable damping force.

Background

Spinning, wire or ribbon production often involves a take-up process in which a take-up device is driven in rotation by a drive device, but as the diameter of the take-up package increases, the tension applied by the package to the wire or ribbon changes, typically increasing, which causes quality problems in the wire or ribbon, e.g. the wire or ribbon is stretched. Tensioners are typically used to maintain a constant tension on the wire or strip.

As is known, tensioners commonly used in the production of yarns, strands or ribbons generally use gravity-or spring-type tensioners, which have the problem of a difficult tension adjustment.

In the production process, the operation of rolling is related, and a damper is also needed to be matched for ensuring the uniformity of the rolled wire or strip. The conventional damper generally adopts a method of electromagnetically controlling damping force, for example, an electromagnetic tension damper described in chinese patent document CN201590744U, and the magnitude of torque can be adjusted by adjusting the magnitude of current, but this adjustment method has a problem of a nonlinear control curve, that is, within a wide adjustment range, the damping force hardly obtains a linear output curve, and the damping force output fluctuates due to structural limitations, mainly limitations of each magnetic head structure. In a high precision production process, such tension fluctuations can have an effect on the quality of the product. In addition, chinese patent document describes a CN1258654C magnetic control friction tension damper, which generates a friction damping force by using a magnetorheological fluid. However, the structure mainly utilizes the damping force generated by the piston, and is usually used for linear damping, but not suitable for circumferential damping. In the prior art, the production line is required to deal with wires with different diameters, and the requirements of the wires with different diameters on the damping range of the tension damper are wide. Chinese patent document CN107324144A describes a tension adjusting device that can have a large damping force adjustment width, but the installation method of this solution can only maintain the vertical axis structure, and the output control curve of the damping force cannot maintain linearity due to the influence of factors such as eddy current and evaporation.

Disclosure of Invention

The invention aims to provide a tension damper which can obtain a linear tension and damping control curve. In a preferable scheme, the output range of the damping force can be greatly enlarged, and the output damping force can be adjusted on line.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a tension damper is characterized in that a balance rod is rotatably arranged on a balance seat, and the balance seat is provided with an angle sensor for detecting the rotating angle of the balance rod;

the balance rod is characterized in that a rotating shaft center of the balance seat is taken as a boundary, one end of the balance rod is provided with a damper, and the damper is used for providing advancing resistance for wires or strips;

the other end of the balance bar is provided with a slide block device which can adjust the position along the balance bar.

In the preferable scheme, in the sliding block device, the counterweight sliding block is in sliding connection with the balance rod, the screw rod is rotatably arranged on the balance rod, and the screw rod is in threaded connection with the counterweight sliding block.

In a preferred embodiment, the damper is a hysteresis damper, a friction damper or a liquid medium damper.

In a preferred scheme, the damper is a liquid medium damper, a liquid medium is arranged in a sealed shell of the liquid medium damper, a rotatable damping shaft is arranged in the sealed shell, the damping shaft is in sliding connection with a damping fin, a toothed section and a smooth section are arranged on the damping shaft, and a plurality of teeth are arranged on the outer wall of the toothed section;

the damping sheet comprises a transmission ring and a plurality of blades, the blades are fixedly arranged on the outer wall of the transmission ring in a radial shape, and the inner wall of the transmission ring is provided with a plurality of teeth meshed with the toothed section;

the damping sheet is meshed with and separated from the toothed section of the damping shaft to adjust the damping size;

the damping device comprises a shell, a plurality of damping pieces, a damping shaft and a plurality of damping elements, wherein the damping pieces can rotate in the shell and can axially move, and the damping shaft is rotatably supported in the shell;

a first driving plate and a second driving plate are respectively arranged at two ends of the plurality of damping sheets, and the first driving plate and the second driving plate are in sliding connection with the damping shaft in a relatively rotatable manner;

screw holes are formed in the edges of the first dial plate and the second dial plate, the screw rod is rotatably supported in the shell, and the screw rod is in threaded connection with the screw holes;

one end of the screw rod extends out of the end cover and is connected with a driving device for driving the screw rod to rotate.

In a preferable scheme, through holes are further formed in the edges of the first dial plate and the second dial plate, the guide rod is supported in the shell, and the first dial plate and the second dial plate are slidably sleeved on the guide rod through the through holes.

In a preferred scheme, blades are arranged on the inner wall of the shell, and the blades on the inner wall of the shell and the blades of the damping sheet form a shearing structure.

In a preferred scheme, the first drive plate is positioned on a smooth section of the damping shaft, and the second drive plate is positioned on a toothed section of the damping shaft;

the inner diameter of the second drive plate is larger than that of the first drive plate;

and slideways are arranged among the second driving plate, the transmission rings of the damping sheets and the end surface of the first driving plate, and balls are arranged in the slideways.

The outer diameter of the toothed section is greater than that of the smooth section, and the difference between the outer diameters is the height of the teeth.

In a preferred embodiment, the liquid medium is a water-based medium or an oil-based medium.

In a preferred scheme, the liquid medium is magnetorheological fluid, the outer wall of the shell is provided with a magnetic conduction piece, the magnetic conduction piece is provided with a coil, and the magnetic field of the magnetic conduction piece and the magnetic field of the coil are along the axial direction of the damping shaft.

In a preferred scheme, end covers are arranged at two ends of a shell, bearings are arranged on the end covers, a damping shaft is supported in the shell through the bearings, and at least one end of the damping shaft extends out of the end covers to transmit torque;

the damping shaft is horizontally arranged;

the driving device comprises an adjusting motor, the adjusting motor is connected with a speed reducer, and the speed reducer is connected with the screw rod through a gear set.

The tension damper provided by the invention can be used in a wire or strip production line with very high precision requirement by adopting a balanced rod type structure and can be used for very precisely adjusting the tension applied to the wire or strip, and the tension damper can control the resistance to the wire or strip while controlling the tension so as to ensure that the running speed of the wire or strip is kept constant and the received tension is kept constant, thereby improving the production quality of the high-precision wire or strip. In the preferred scheme, the adjustable slide block device is arranged, so that the tension can be conveniently and automatically adjusted manually. The adopted liquid medium damper obtains smooth and adjustable damping force by means of resistance generated between the damping fins and the liquid medium, and is particularly suitable for production of high-precision wire rods or strips, such as production of superfine metal wires. The wide adjustment of the output of the damping force is realized through the engagement and disengagement of the damping pieces and the damping shaft, so that the production of wire rods or belt materials with various specification parameters corresponding to one production line is realized. In a further preferred scheme, the damping force can be adjusted on line through the structures of the first driving plate, the second driving plate, the screw and the driving device, and the output adjusting range of the damping force can be further enlarged by matching the filled magneto-rheological fluid with the magnetic conduction piece and the coil structure.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional view of a damper according to the present invention.

FIG. 3 is a schematic view showing the overall structure of the damper, the vane and the casing according to the present invention.

Fig. 4 is a schematic cross-sectional view of a damper shaft according to the present invention.

Fig. 5 is a schematic diagram of an application scenario of the present invention.

In the figure: damping fin 1, driving ring 101, blade 102, damping shaft 2, toothed section 21, smooth section 22, first dial 3, second dial 4, bearing 5, sealing member 6, guide rod 7, magnetic conduction member 8, coil 9, liquid medium 10, screw rod 11, first gear 12, second gear 13, speed reducer 14, adjusting motor 15, first end cover 16, second end cover 17, shell 18, ball 19, damper 100, balance rod 200, balance seat 300, slider device 400, counterweight slider 401, screw rod 402, bearing seat 403, motor 404, guide wheel 500, winding device 600, and wire or strip 700.

Detailed Description

As shown in fig. 1, in a tension damper, a balance bar 200 is rotatably mounted on a balance base 300, and an angle sensor for detecting a rotation angle of the balance bar 200 is provided at the balance base 300; the angle sensor is provided to actually feed back the change in tension applied to the wire or strip 700.

The balance rod 200 is provided with a damper 100 at one end by taking the rotating axis of the balance seat 300 as a boundary, and the damper 100 is used for providing running resistance for the wire or the strip 700;

the other end of the balancing bar 200 is provided with the slider means 400 adjustable in position along the balancing bar 200, whereby the structure can provide a high-precision tension to the wire or strip 700 and a high-precision resistance.

In the preferred embodiment, as shown in fig. 1, in the slider device 400, a weight slider 401 is slidably connected to a balance bar 200, a screw 402 is rotatably mounted on the balance bar 200, and the screw 402 is threadedly connected to the weight slider 401. Optionally, a handle is provided at the end of the screw 402 away from the balance base 300, so that the position of the weight slider 401 can be adjusted manually to adjust the tension in a wide range and ensure accuracy. In another alternative, the end of the screw 402 away from the balancing seat 300 is connected to a motor 404, and preferably, the motor 404 is a stepping motor or a servo motor, so that the automatic control of the tension adjustment is realized.

In a preferred embodiment, the damper 100 is a hysteresis damper, a friction damper or a liquid medium damper.

In a preferred scheme, as shown in fig. 2 to 4, the damper 100 is a liquid medium damper, a liquid medium 10 is arranged in a sealed shell 18 of the liquid medium damper, a rotatable damping shaft 2 is arranged in the sealed shell 18, the damping shaft 2 is connected with a damping fin 1 in a sliding manner, a toothed section 21 and a smooth section 22 are arranged on the damping shaft 2, and a plurality of teeth are arranged on the outer wall of the toothed section 21;

the damping sheet 1 comprises a transmission ring 101 and a plurality of blades 102, the blades 102 are fixedly arranged on the outer wall of the transmission ring 101 in a radial shape, and the inner wall of the transmission ring 101 is provided with a plurality of teeth meshed with the toothed section 21;

the damping fin 1 is meshed with and separated from the toothed section 21 of the damping shaft 2 to adjust the damping; from this structure, slide along damping axle 2 through damping fin 1, when damping fin 1 and damping axle 2 meshing, damping axle 2 drives damping fin 1 rotatory to produce great damping force, and throw off when damping fin 1 and damping axle 2, then damping axle 2 can not drive damping fin 1 rotatory, thereby damping force is less. Through the structure, the damping force can be adjusted.

The damping device comprises a plurality of damping pieces 1, a plurality of damping pieces 1 can rotate in a shell 18 and can axially move, and a damping shaft 2 can rotatably support in the shell 18; in the mode, the damping force is adjusted by adjusting the axial displacement of the damping fin 1. With this structure, the range of damping force adjustment can be greatly increased.

A first driving plate 3 and a second driving plate 4 are respectively arranged at two ends of the plurality of damping fins 1, and the first driving plate 3 and the second driving plate 4 are in sliding connection with the damping shaft 2 in a relatively rotatable manner;

screw holes are formed in the edges of the first driving plate 3 and the second driving plate 4, the screw rod 11 is rotatably supported in the shell 18, and the screw rod 11 is in threaded connection with the screw holes;

one end of the screw 11 extends out of the end cap and is connected to a driving device for driving the screw 11 to rotate. The screw rod 11 is driven by the driving device to rotate, so that the first driving plate 3, the plurality of damping fins 1 and the second driving plate 4 are driven to slide, and the number of the damping fins 1 meshed with the toothed section 21 of the damping shaft 2 is adjusted.

Preferably, as shown in fig. 1, the edges of the first dial 3 and the second dial 4 are further provided with through holes, the guide rod 7 is supported in the housing 18, and the first dial 3 and the second dial 4 are slidably sleeved on the guide rod 7 through the through holes. With this structure, the sliding of the first dial 3 and the second dial 4 is smooth.

Preferably, as shown in fig. 3, blades are provided on the inner wall of the housing 18, and the blades on the inner wall of the housing 18 and the blades 102 of the damper 1 form a shearing structure.

In a preferred scheme, the first drive plate 3 is positioned on a smooth section 22 of the damping shaft 2, and the second drive plate 4 is positioned on a toothed section 21 of the damping shaft 2;

the inner diameter of the second driving plate 4 is larger than that of the first driving plate 3;

slide ways are arranged among the end surfaces of the second driving plate 4, the transmission ring 101 of each damping sheet 1 and the first driving plate 3, and balls 19 are arranged in the slide ways. With this structure, sliding friction between the second dial 4, each damper fin 1, and the first dial 3 is reduced. The provision of the balls 19 also has the effect of defining the radial position of the damper plate 1. In this case, the width of the drive ring 101 is preferably smaller than the width of the blades 102. So that the blades 102 are as close as possible without interfering with each other.

The toothed section 21 has an outer diameter greater than the smooth section 22, the difference in outer diameter being the height of the teeth.

In a preferred embodiment, the liquid medium 10 is a water-based medium or an oil-based medium. Preferably an oil-based medium is used.

In a preferred scheme, the liquid medium 10 is magnetorheological fluid, the outer wall of the shell 18 is provided with a magnetic conduction member 8, the magnetic conduction member 8 is provided with a coil 9, and the magnetic fields of the magnetic conduction member 8 and the coil 9 are along the axial direction of the damping shaft 2. The magnetorheological fluids described employ liquids incorporating magnetic particles having high yield strength and viscosity when subjected to a magnetic field, such as described in U.S. patent documents US5018606 and US 5384330. The improvement in this example is the conversion of the magnetorheological fluid from a linear damping configuration to a rotary motion damping configuration.

In a preferred scheme, end covers are arranged at two ends of the shell 18, bearings are arranged on the end covers, a sealing element 6 for sealing is further arranged on the inner sides of the end covers, the damping shaft 2 is supported in the shell 18 through the bearings, and at least one end of the damping shaft 2 extends out of the end covers to transmit torque;

preferably, the damping shaft 2 is horizontally arranged; of course, in some scenarios it is also possible to arrange the damping axis 2 of the present application vertically. The horizontal arrangement of the damping axis 2 in general enables more application scenarios.

The driving device comprises an adjusting motor 15, the preferable adjusting motor 15 adopts a stepping motor or a servo motor, the adjusting motor 15 is connected with a speed reducer 14, and the speed reducer 14 is connected with the screw rod 11 through a gear set.

In an application scenario, as shown in fig. 5, the tension is applied to the wire or strip 700 by adjusting the position of the counterweight sliding block 401 on the balance bar 200 to make the end where the damper 100 is installed heavier, the wire or strip 700 is wound around the guide wheel 500 and then wound on the damping wheel of the damper 100, or wound in multiple turns to apply resistance to the wire or strip 700, and then the wire or strip 700 is wound on the winding device 600. As the diameter of the package increases as the winder 600 winds, the tension applied to the wire or strip 700 increases, and at this time, the angle sensor, such as an absolute encoder, feeds back the angle change, and adjusts the rotation speed of the motor of the winder 600 according to the feedback, such as slowing down the rotation speed, so that the tension decreases, and the tension decreases accordingly, until the angle sensor returns to the preset state. The damper 100 is provided to provide a uniform resistance to the wire or strip 700 to ensure uniform winding. When the wire or the strip 700 with different specifications is replaced, the tension is adjusted by adjusting the position of the weight slider 401, and the resistance is adjusted by adjusting the position of the damping fin 1.

The above-mentioned embodiments are only preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict, for example, a combination of a structure of a magnetorheological fluid and a structure of a multi-piece damper strip 1. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. A tension damper is characterized in that: the balance rod (200) is rotatably arranged on the balance seat (300), and the balance seat (300) is provided with an angle sensor for detecting the rotating angle of the balance rod (200);

the balance rod is characterized in that a rotating shaft center of the balance seat (300) is taken as a boundary, one end of the balance rod (200) is provided with a damper (100), and the damper (100) is used for providing advancing resistance for wires or strips (700);

the other end of the balancing rod (200) is provided with a slide block device (400) which can adjust the position along the balancing rod (200);

the damper (100) is a liquid medium damper, a liquid medium (10) is arranged in a sealed shell (18) of the liquid medium damper, a rotatable damping shaft (2) is arranged in the sealed shell (18), the damping shaft (2) is in sliding connection with a damping fin (1), a toothed section (21) and a smooth section (22) are arranged on the damping shaft (2), and a plurality of teeth are arranged on the outer wall of the toothed section (21);

the damping sheet (1) comprises a transmission ring (101) and a plurality of blades (102), the blades (102) are fixedly arranged on the outer wall of the transmission ring (101) in a radial shape, and the inner wall of the transmission ring (101) is provided with a plurality of teeth meshed with the toothed section (21);

the damping sheet (1) is meshed with and separated from a toothed section (21) of the damping shaft (2) to adjust the damping size;

the damping device is characterized in that the damping pieces (1) are multiple, the damping pieces (1) can rotate in the shell (18) and can axially move, and the damping shaft (2) can be rotatably supported in the shell (18);

a first driving plate (3) and a second driving plate (4) are respectively arranged at two ends of the damping pieces (1), and the first driving plate (3) and the second driving plate (4) are in sliding connection with the damping shaft (2) in a manner of relative rotation;

screw holes are formed in the edges of the first driving plate (3) and the second driving plate (4), the screw rod (11) is rotatably supported in the shell (18), and the screw rod (11) is in threaded connection with the screw holes;

one end of the screw rod (11) extends out of the end cover and is connected with a driving device for driving the screw rod (11) to rotate.

2. A tension damper as set forth in claim 1, wherein: in the slider device (400), a counterweight slider (401) is in sliding connection with a balance rod (200), a screw rod (402) is rotatably arranged on the balance rod (200), and the screw rod (402) is in threaded connection with the counterweight slider (401).

3. A tension damper as set forth in claim 1, wherein: the damper (100) is a hysteresis damper, a friction damper or a liquid medium damper.

4. A tension damper as set forth in claim 1, wherein: the edges of the first driving plate (3) and the second driving plate (4) are also provided with through holes, the guide rod (7) is supported in the shell (18), and the first driving plate (3) and the second driving plate (4) are slidably sleeved on the guide rod (7) through the through holes.

5. A tension damper as set forth in claim 1, wherein: blades are arranged on the inner wall of the shell (18), and the blades on the inner wall of the shell (18) and the blades (102) of the damping fin (1) form a shearing structure.

6. A tension damper as set forth in claim 1, wherein: the first drive plate (3) is positioned on the smooth section (22) of the damping shaft (2), and the second drive plate (4) is positioned on the toothed section (21) of the damping shaft (2);

the inner diameter of the second driving plate (4) is larger than that of the first driving plate (3);

slideways are arranged among the end surfaces of the second driving plate (4), the transmission ring (101) of each damping sheet (1) and the first driving plate (3), and balls (19) are arranged in the slideways;

the outer diameter of the toothed section (21) is greater than the outer diameter of the smooth section (22), and the difference between the outer diameters is the height of the teeth.

7. A tension damper as set forth in claim 1, wherein: the liquid medium (10) is either a water-based medium or an oil-based medium.

8. A tension damper as set forth in claim 1, wherein: the liquid medium (10) is magnetorheological fluid, a magnetic conduction piece (8) is arranged on the outer wall of the shell (18), a coil (9) is arranged on the magnetic conduction piece (8), and the magnetic fields of the magnetic conduction piece (8) and the coil (9) are along the axis direction of the damping shaft (2).

9. A tension damper as set forth in claim 1, wherein: end covers are arranged at two ends of the shell (18), bearings are arranged on the end covers, the damping shaft (2) is supported in the shell (18) through the bearings, and at least one end of the damping shaft (2) extends out of the end covers to transmit torque;

the damping shaft (2) is horizontally arranged;

the driving device comprises an adjusting motor (15), the adjusting motor (15) is connected with a speed reducer (14), and the speed reducer (14) is connected with the screw rod (11) through a gear set.