CN109208125B - Ring spinning machine with multiple spinning positions - Google Patents
Ring spinning machine with multiple spinning positions Download PDFInfo
- Publication number
- CN109208125B CN109208125B CN201810705601.0A CN201810705601A CN109208125B CN 109208125 B CN109208125 B CN 109208125B CN 201810705601 A CN201810705601 A CN 201810705601A CN 109208125 B CN109208125 B CN 109208125B
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- belt
- ring spinning
- spinning machine
- spindles
- tangential
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
- D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
Abstract
The invention relates to a ring spinning machine (1) having a plurality of spinning positions, the spindles (2) of which are frictionally driven by a circulating tangential belt (3) during a spinning operation. The ring spinning machine (1) is characterized in that the ring spinning machine (1) is equipped with a device for monitoring the belt tension of the tangential belt (3), which has a sensor device (12,14) and a belt tensioning device (27,15), wherein the belt tensioning device (27,15) is connected to a control device (13) which processes the measured values of the sensor device (12,14) and can be controlled such that the belt tension of the tangential belt (3) is automatically maintained at a set optimum value throughout the spinning operation of the ring spinning machine (1).
Description
Technical Field
The invention relates to a ring spinning machine with a plurality of spinning positions, wherein the spindles are driven by friction of a circulating tangential belt in the spinning process.
Background
Spinning machines with a plurality of spinning positions have long been known in the textile industry. Such multi-position spinning machines, such as ring spinning machines or rotor spinning machines, and the various embodiments of such spinning machines are described in the patent literature, sometimes relatively completely.
Such multi-position spinning machines usually have a plurality of identical stations which are arranged next to one another on both sides of the longitudinal axis of the machine and whose operating members are generally driven in unison by an endless continuous drawing member along the length of the machine.
In the case of ring spinning machines, the individual stations are each equipped, for example, with freely rotatably mounted spindles, and an endless tangential belt along the length of the machine is usually used as a drive mechanism for the spindles. The tangential belt runs through the drive wheel of a spindle drive, which is arranged, for example, adjacent to the machine center and is connected to the frequency converter, and is guided over a deflection wheel at each corner of the textile machine.
In order to ensure that the spindle disks are reliably driven frictionally by the endless tangential belts during the spinning operation, so-called pressure rollers are usually also installed in the spindle regions of such ring spinning machines, which ensure that the tangential belts bear against the spindle disks with a sufficiently high pressing pressure and a sufficiently large wrapping angle.
The drive device described above has proven itself in practice, particularly in connection with ring spinning machines, but has some disadvantages.
For example, the tangential belt along the length of the machine should always have a sufficiently high belt tension, since an extremely low belt tension leads to the risk of the occurrence of so-called slow spindles. In other words, if the belt tension is too low, the contact pressure of the tangential belt against the driving spindle disk of the spindle or the wrapping angle ensuring a suitable frictional driving of the spindle is generally too low, with the result that the spindle speed drops below the specified speed level of the ring spinning machine.
Since the yarn material produced on such slow spindles is usually hardly available for further processing, measures have already been sought in the past which can be used to prevent the slow spindles from occurring as far as possible.
It has long been known, for example, to provide manually operable tensioning devices in the region of the endless tangential belt of a ring spinning machine. These known tensioners may be operated by the operator whenever the operator believes that the belt tension of the tangential belt is slightly reduced, or the tensioner may be operated according to a prescribed schedule.
In both cases it cannot be guaranteed that the belt tension of the tangential belt is always optimal.
In connection with ring spinning machines, for example, it is often the case that the relatively high belt tension of the tangential belt driving the spindles is always utilized during the entire operating period of the textile machine. In practice, however, such a generally too high belt tension of the tangential belt not only leads to unnecessarily high loads acting on the drive steering shaft and the tangential belt itself, but also increases the energy consumption of the ring spinning machine.
A further possibility to find the appearance of slow spindles in ring spinning machines in the early days is to monitor the rotational speed of a number of spindles during the spinning operation.
For example, DE4016510a1 describes a ring spinning machine with a sensor device which is connected to the continuous drawing element and which reciprocates along the spindles during the spinning operation and monitors the spindle rotational speed.
In the case of a ring spinning machine according to EP1074645B1, sensor devices are arranged in the region of each of a number of spinning positions of the textile machine and each sensor device indicates a yarn break and a slow state of a spinning position.
Furthermore, DE102012011613a1 describes a device in connection with a cabling machine, by means of which it should be ensured that the operating behavior and the energy consumption of the multi-position textile machine are not adversely affected in the event of a yarn break at a position.
This known textile machine has a plurality of stations, each having a cabling spindle which can be driven by a tangential belt, wherein movably mounted belt rollers are arranged in the region of the cabling spindles, each belt roller being applied to the tangential belt by means of a compensating unit. In addition, in the case of this known cabling machine, sensor devices are arranged in the region of the slack side and/or tight side of the tangential belt, each sensor device detecting the existing belt tension, wherein the air pressure required in a central compressed air supply of the textile machine is determined as a function of the detected value of the belt tension.
A method and a device for measuring the belt tension are also described in DE19616574a 1. In the case of this known method, the belt tension is determined in dependence on the resonant oscillation frequency of the belt.
Disclosure of Invention
In view of the above-mentioned prior art, the problem addressed by the present invention is to further develop a ring spinning machine with a plurality of spinning stations, the spindles of which are frictionally driven by an endless tangential belt during the spinning operation, so that an optimum belt tension of the tangential belt along the machine length is always ensured during the entire operation of the ring spinning machine.
According to the invention, this problem is solved in that the ring spinning machine is equipped with a device for monitoring the belt tension of the tangential belt, which has a sensor device and a belt tensioning device, wherein the belt tensioning device is connected to a control device which processes the measured values of the sensor device and can be controlled in such a way that the belt tension of the tangential belt is automatically maintained at a set optimum value throughout the spinning operation of the ring spinning machine.
In particular, the design according to the invention has the advantage that it reacts immediately to changes in the belt tension of the tangential belt, for example to elongation of the tangential belt due to ageing. In other words, the control device automatically ensures that the belt tension of the tangential belt is immediately corrected as required by means of the belt tensioning device on the basis of the belt tension value determined by means of the sensor device, so that a defined optimum belt tension value is maintained. Such an optimum belt tension value can lead not only to an optimization of the energy requirements of the ring spinning machine, but also generally to a reliable avoidance of the slow spindle (schleichweindelen).
In an advantageous embodiment, it is provided that the belt tensioner has a movably mounted pulley, which can be positioned in a defined manner by adjusting the drive. Such a belt tensioner is characterized by being very reliable and excellent in functionality. Furthermore, the expenditure required for installing such a belt tensioner is kept within a reasonable range.
In one advantageous embodiment, the actuating drive connected to the control device via the control line is designed as a motor drive. Such motor drives are mass products which are commercially available economically and have been examined in many fields of application. This means that a long-lasting reliable functionality of the belt tensioner can be ensured by the adjusting drive thus constructed and controlled.
In a further advantageous embodiment, provision is made for the pulley to be mounted so securely that the length of the path of movement of the tangential belt can be adapted at any time to the particular length of the tangential belt, as required. Such a design allows in a simple manner an accurate setting and, if necessary, a quick correction of the belt tension to be applied to the tangential belt by the belt tensioner. In practice, this means that the operating effort required to maintain the torque to be transmitted to the multi-station textile machine spindle by the tangential belt at all times at an optimum level is comparatively low.
In an alternative embodiment, the belt tensioning device is formed by a plurality of pressure rollers, each of which is arranged in the region between the spindles and can be mounted in a movable manner towards the tangential belt by means of an adjusting drive. The pressure roller is preferably fixed to a movably mounted link which is arranged and designed in such a way that the adjusting drive can press the pressure roller more strongly against the tangential belt as required, which results in an immediate increase in the belt tension. Each pressure roller arranged in the region between the spindles has the advantage that it changes not only the belt tension but also the wrapping spindle. By varying the wrap, spindle drive can be improved as desired.
In the case of such a belt tensioner, too, an electric motor drive connected to the control device is advantageously used as the adjusting drive, since such a motor, as already explained above, is a mass product which is commercially available economically and has been tested in many fields of application.
In a further advantageous embodiment, the sensor device of the device for monitoring the belt tension of the tangential belt comprises a belt tension sensor. Such belt tension sensors are known per se in connection with drive belts.
The signals initiated by such a belt tension sensor are processed in a downstream control device and used by said control device for dimensionally accurate control of the tensioning device, which in turn ensures that the tangential belt always has a defined optimum belt tension.
The sensor means may also include a speed sensor whereby the spindle speed is monitored.
It is particularly advantageous if the belt tensioning device has both a movably mounted belt pulley for adjusting the belt tension and a plurality of pressure rollers, each of which is arranged in the region between the spindles. In this case, the pulley is advantageously moved according to the measurement of the belt tension sensor. In this way, a prescribed belt tension value can be set. The sensor means for monitoring the rotational speed can detect any slow spindle still present. The pressure rollers are preferably positioned according to the measurement of a sensor device for monitoring the spindle speed. In this way, an optimum value of the belt tension can be set and slow spindles can be reliably prevented.
Drawings
Further details of the invention can be taken from the following examples, which are explained on the basis of the drawings, which show:
FIG. 1 is a schematic top view of a first embodiment of a spindle drive of a ring spinning machine with an endless tangential belt for frictionally driving the spindles and a tensioning device for setting the belt tension and a tensioning device whose pressure roller is movable,
FIG. 2 is a schematic top view of a second embodiment of a spindle drive of a ring spinning machine, with an endless tangential belt for frictionally driving the spindles and a tensioning device cooperating with a movable pulley to set the belt tension,
FIG. 3 is a schematic top view of a third embodiment of a spindle drive of a ring spinning machine, with an endless tangential belt for frictionally driving the spindles and a tensioning device whose pressure rollers are fixed to the connecting rods and can be directed towards the tangential belt,
FIG. 4 is a flow chart of the operation of a ring spinning machine with a spindle drive having the embodiment shown in FIG. 1.
Detailed Description
Fig. 1 shows a schematic plan view of a first embodiment of a drive for spindles 2 of a ring spinning machine 1.
As can be seen, the ring spinning machine 1 has a plurality of such spindles 2, in some cases more than 1000, on both sides in the machine direction. As is known and therefore not explained in greater detail, so-called spinning spools are produced on the spindle 2, which have relatively little yarn material and are therefore subsequently rewound into crosswound bobbins on a downstream automatic winder.
The spindles 2 are mounted freely rotatably and are driven by an endless tangential belt 3, preferably along the length of the machine, which acts on the driving disks of the spindles 2 and frictionally drives the spindles 2 in rotation.
In order to obtain a certain contact pressure of the tangential belt 3 against the spindles of the spindles 2, so-called press rollers 4 are additionally provided between the spindles 2, which press rollers are preferably arranged in pairs on spring elements 19, which contact the circulating tangential belt 3 with a certain pressure.
As can be seen, the tangential belt 3 runs in one cycle over four deflecting rollers 5 arranged in the machine corners and a drive roller 7 arranged on the motor shaft of the spindle drive 6.
Furthermore, the tangential belt 3 extends over the pulley 8 of the belt tensioner 27.
According to the present embodiment, the linearly movably mounted belt pulley 8 is coupled, for example by means of a spindle drive 9, to an adjusting drive 10, which is preferably designed as a motor drive 11. The adjusting drive 10 of the belt tensioning device 27 is additionally coupled to the control 13 of the ring spinning machine 1 via a control line 20.
Furthermore, in order to monitor the belt tension of the tangential belt 3, a belt tension sensor 12 is provided, which is likewise connected to the control device 13 via a signal line 21.
Furthermore, a corresponding sensor device 14 is installed in the region of the spindles 2, by means of which the rotational speed of the spindles 2 is monitored and the possible occurrence of so-called slow spindles is detected, the sensor device 14 likewise being connected to the control device 13 via a signal line 18.
In order to allow a very effective reaction in the presence of the possible slow spindles, the pressure roller 4 is also mounted in such a way that the structure forms a tensioning device 15. In other words, the pressure roller 4 can be acted upon by the adjusting drive 16 in such a way that the pressure roller 4 is moved towards the tangential belt 3. As is known, the pressure rollers 4, which are preferably mounted in pairs on respective spring elements 19 and are located between the spindles 2, act on the tangential belt 3 to increase the belt tension. As can be seen, the pressure roller 4 is coupled, for example by means of a movably mounted connecting rod 17, to an adjustment drive 16, which is preferably also designed as a motor drive 11 and is connected to the control device 13 by means of a control line 22.
In order to ensure that the conditions are almost identical at all spindles 2 of the ring spinning machine 1, the above-mentioned tensioning devices 15 are preferably mounted on each of the two machine-longitudinal sides of the ring spinning machine 1.
In the embodiment of fig. 1, the tensioners 15 and 27 form a common belt tensioner.
The second embodiment of the spindle drive of the ring spinning machine 1, as shown in fig. 2, differs from the first embodiment only in that the tensioning device 15 arranged in the region of the pressure roller 4 is omitted from the second embodiment. This means that in the embodiment according to fig. 2 the tension of the endless tangential belt is controlled by only one belt tensioner 27.
As can be seen, in this embodiment, the ring spinning machine 1 also has a plurality of spindles 2 on both sides in the machine longitudinal direction, which are mounted freely rotatably and are driven by an endless tangential belt 3 along the machine length. In order to increase the contact pressure of the tangential belts 2 against the spindles of the spindles 2, pressure rollers 4 are also positioned between the spindles 2, which pressure rollers, mounted in pairs on respective spring elements 19, exert a certain pressure on the tangential belts 3.
As usual, the tangential belt 3 runs through four deflecting rollers 5 arranged in the machine corners of the ring spinning machine 1 and a drive wheel 7 arranged on the motor shaft of the spindle drive 6. The tangential belt 3 also extends through a belt tensioner 27, which in particular has a linearly movable pulley 8. As is known from the exemplary embodiment according to fig. 1, the belt pulley 8 is coupled via a spindle drive 9 to an actuating drive 10, which is preferably designed as an electric motor drive 11. The adjustment drive 10 is connected to the control device 13 via a control line 20.
Furthermore, in order to monitor the belt tension of the tangential belt 3, a belt tension sensor 12 is provided as in the first embodiment, which is also connected to the control device 13 via a signal line 21.
In addition, a sensor device 14 is installed in the spindle area, by means of which sensor device 14 the possible presence of a so-called slow spindle is detected.
The sensor device 14 is connected to the control device 13 by a signal line 18.
Fig. 3 shows an alternative third embodiment of the spindle drive of the ring spinning machine 1.
This third embodiment differs from the first embodiment in that the special belt tensioning device 27 with the movable belt pulley 8 is dispensed with and instead only the tensioning device 15 formed by the movable pressure roller 4 is used.
As can be seen, in this embodiment, the ring spinning machine 1 also has a plurality of spindles 2 on both sides in the machine longitudinal direction, said spindles 2 being mounted freely rotatably and being driven by an endless tangential belt 3 along the machine length.
As already explained in connection with the embodiment according to fig. 1, the tensioning device 15 is formed by the pressure roller 4, which is connected, for example, to a movably mounted connecting rod 17, which, when acted upon by the adjusting drive 16, is moved in such a way that the pressure roller 4 is moved towards the tangential belt 3.
The pressure roller 4 can also be connected directly, i.e. without the intervention of a connecting rod 17, to the corresponding adjustment drive 16.
As is known, the pressure rollers 4, which are preferably arranged in pairs on the respective spring elements 29 and between the spindles 2, act on the tangential belt 3 to increase the belt tension.
The adjusting drive 16, which is coupled to the movable linkage 17 in the present exemplary embodiment, is designed as a motor drive 11 and is connected to the control device 13 via a control line 22.
In order to ensure that almost identical conditions exist at all spindles 2 of the ring spinning machine 1, the above-mentioned tensioning devices 15 are preferably mounted on both machine-longitudinal sides of the ring spinning machine 1.
Furthermore, in order to monitor the belt tension of the tangential belt 3, a belt tension sensor 12 is provided, as known from the first and second embodiments, which is connected to the control device 13 via a signal line 21.
In addition, a sensor device 14 is installed in the spindle area, by means of which sensor device 14 the possible presence of a so-called slow spindle is detected. The sensor device 14 is likewise connected to the control device 13 via a signal line 18.
Fig. 4 shows the operation of the ring spinning machine 1 with the embodiment of the spindle drive shown in fig. 1 by way of a flow chart.
As can be seen, when the ring spinning machine 1 is switched on, the frequency converter, not shown in the drawing, is first activated, which in turn ensures that the spindle drive 6 is activated, which then drives the tangential belt 3 along the length of the machine. The tangential belt 3 then frictionally drives the plurality of spindles 2 of the ring spinning frame 1 in rotation. At the same time or immediately thereafter, the belt tension sensor 12 checks whether the belt tension value corresponds to a prescribed belt tension value.
If this is not the case, the adjusting drive 10 of the belt tensioner 27 is activated, which ensures that the specified value of the belt tension is set.
In addition, the rotational speed of the spindles 2 is monitored by a sensor device 14. This means that the sensor device 14 checks whether all the spindles 2 are rotating at a defined rotational speed or whether there may be spindles 2 with a reduced rotational speed.
If the sensor device 14 determines that one or more of the spindles 2 is acting like a so-called "slow spindle", i.e. has a very low rotational speed level, the tensioning device 15 is activated, the actuating motor 11 of which is coupled to the pressure roller 4, for example, on one side of the machine longitudinal direction of the ring spinning machine, by means of a connecting rod 17.
This means that the pressure rollers 4 are moved slightly in the direction of the tangential belt 3 and ensure that the contact pressure of the tangential belt 3 against the spindle disk of the spindle 2 is increased slightly and in particular that the wrapping angle of the tangential belt 3 on the spindle disk is increased slightly.
Both measures result in an improved frictional contact between the tangential belt 3 and the spindle 2 spindle disk, with the result that the "slow spindle" is accelerated to a defined rotational speed level. However, the use of the tensioning device 15 may also lead to a change in the belt tension, i.e. to an increase in the belt tension, which in the case of the embodiment according to fig. 1 may subsequently be compensated for by the tensioning device 10 being activated, i.e. controlled to reduce the belt tension.
Claims (8)
1. Ring spinning machine (1) having a plurality of spinning positions, the spindles (2) of which are frictionally driven by a circulating tangential belt (3) during a spinning operation, characterized in that the ring spinning machine (1) is equipped with a monitoring device for monitoring the belt tension of the tangential belt (3), which monitoring device has a sensor device and a belt tensioning device, wherein the belt tensioning device is correspondingly connected to a control device (13) which processes the measured values of the sensor device and can be controlled such that the belt tension of the tangential belt (3) is automatically maintained at a set optimum value throughout the spinning operation of the ring spinning machine (1), wherein the belt tensioning device comprises a first belt tensioning device (15), the first belt tensioning device (15) having a plurality of pressure rollers (4), each pressure roller is arranged in a region between the spindles (2) and can be positioned by means of a first adjusting drive (16), wherein the sensor device comprises a rotational speed sensor (14) for monitoring a rotational speed of the spindles (2), and wherein the pressure rollers (4) are positioned as a function of a measurement value of the rotational speed sensor (14) for monitoring the rotational speed of the spindles (2).
2. A ring spinning machine (1) according to claim 1, characterized in that the belt tensioning device comprises a second belt tensioning device (27), the second belt tensioning device (27) having a movably mounted pulley (8) which can be brought into position in a defined manner by means of a second adjusting drive (10).
3. A ring spinning machine (1) according to claim 2, characterized in that the second adjusting drive (10) is connected to the control device (13) by a second control line (20) and the second adjusting drive (10) is designed as a second motor drive (11).
4. A ring spinning machine (1) according to claim 2, characterized in that the belt pulley (8) is mounted in a movable manner, so that the length of the movement path of the tangential belt (3) can be adjusted to match the corresponding length of the tangential belt (3) at any time according to need.
5. A ring spinning machine (1) according to claim 1, characterized in that the pressure roller (4) is connected to the first adjusting drive (16) by a connecting rod (17).
6. A ring spinning machine (1) according to claim 1 or 5, characterized in that the pressure roller (4) is movable in a defined manner towards the tangential belt (3) by means of the first adjusting drive (16).
7. A ring spinning machine (1) according to claim 1, characterized in that the first adjusting drive (16) is connected to the control device (13) by a first control line (22) and the first adjusting drive (16) is designed as a first motor drive (23).
8. A ring spinning machine (1) according to claim 1, characterized in that the sensor means comprises a belt tension sensor (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017114792.6 | 2017-07-03 | ||
| DE102017114792.6A DE102017114792A1 (en) | 2017-07-03 | 2017-07-03 | Ring spinning machine with a large number of spinning stations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208125A CN109208125A (en) | 2019-01-15 |
| CN109208125B true CN109208125B (en) | 2021-06-22 |
Family
ID=64662179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810705601.0A Active CN109208125B (en) | 2017-07-03 | 2018-07-02 | Ring spinning machine with multiple spinning positions |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109208125B (en) |
| DE (1) | DE102017114792A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900002661A1 (en) * | 2019-02-25 | 2020-08-25 | Marzoli Machines Textile Srl | RING SPINNER |
| EP3828325A1 (en) * | 2019-11-29 | 2021-06-02 | Saurer Intelligent Technology AG | Spinning station and air spinning station comprising such a spinning station and process to determin a yarn strength defect |
| DE102021103078A1 (en) | 2021-02-10 | 2022-08-11 | Arburg Gmbh + Co Kg | Device and method for monitoring and adjusting belt tension |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01111027A (en) * | 1987-10-19 | 1989-04-27 | Murata Mach Ltd | Apparatus for rotating spindle in double twister |
| JPH0274629A (en) * | 1988-09-09 | 1990-03-14 | Murata Mach Ltd | Tension-controlling apparatus for spindle-driving belt |
| DE4016510A1 (en) | 1990-05-22 | 1991-11-28 | Zinser Textilmaschinen Gmbh | Spindle speed control for consistent yarn prod. - varies energy supply to the spindle drives to compensate for spindle speed deviations |
| CN1029747C (en) * | 1992-08-25 | 1995-09-13 | 国营经纬纺织机械厂 | Digitally-controlled spinning frame |
| JPH08327477A (en) | 1995-06-05 | 1996-12-13 | Mitsubishi Electric Corp | Instrument for measuring tension of belt |
| DE19929467A1 (en) | 1999-06-26 | 2000-12-28 | Rieter Ag Maschf | Sensor carrier for a ring spinning machine comprises an elongate body which is attachable to the ring frame in such a way that it covers several spinners and can carry a corresponding number of sensors |
| CN201620216U (en) * | 2010-01-20 | 2010-11-03 | 浙江金元亚麻有限公司 | Apron belt drive device used on spinning machine |
| DE102012011613A1 (en) * | 2012-06-12 | 2013-12-12 | Saurer Germany Gmbh & Co. Kg | Textile machine with a variety of jobs |
| CN203498543U (en) * | 2013-09-09 | 2014-03-26 | 新昌县锦马科技有限公司 | Automatic tangential belt tensioning device of textile machine |
| CN104357967A (en) * | 2014-10-13 | 2015-02-18 | 昆山奥朋纺织机械有限公司 | Automatic tensioning device for tangential belt |
| CN204211891U (en) * | 2014-11-07 | 2015-03-18 | 江西华春色纺科技发展有限公司 | A kind of fine spining machine automatic transmission control device |
| CN204959142U (en) * | 2015-05-27 | 2016-01-13 | 天津滨海大田纺织有限公司 | Spindle drive mechanism of twisting frame |
| CN205839224U (en) * | 2016-05-25 | 2016-12-28 | 新昌县南明街道凌翔机械配件厂 | Tengential belt auto-tensioning adjusting means |
-
2017
- 2017-07-03 DE DE102017114792.6A patent/DE102017114792A1/en active Pending
-
2018
- 2018-07-02 CN CN201810705601.0A patent/CN109208125B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109208125A (en) | 2019-01-15 |
| DE102017114792A1 (en) | 2019-01-03 |
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