CN203807667U - Air jet loom let-off device - Google Patents
Air jet loom let-off device Download PDFInfo
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- CN203807667U CN203807667U CN201420132299.1U CN201420132299U CN203807667U CN 203807667 U CN203807667 U CN 203807667U CN 201420132299 U CN201420132299 U CN 201420132299U CN 203807667 U CN203807667 U CN 203807667U
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- yoke
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- jet loom
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- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 11
- 238000009941 weaving Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an air jet loom let-off device. The air jet loom let-off device comprises a left machine frame and a right machine frame which are in same structure; a tension roller and a transitional roller are installed between the left machine frame and the right machine frame; the left machine frame and the right machine frame both comprise a lifting support and a positioning base which is installed above the lifting support; a tension roller supporting mechanism is respectively installed on the two positioning bases; every tension roller supporting mechanism comprises a rocking shaft; a rocking arm is installed at one end of every rocking shaft and a flexible supporting arm is installed at the other end; the rocking arms are arranged on the external sides of the left machine frame and the right machine frame; the flexible supporting arms are arranged on the internal sides of the left machine frame and the right machine frame; the external sides of the rocking arms are connected with a positive type warp loosening mechanism or a passive type tension mechanism; bushings or bearings which are used for installing the tension rollers are arranged on the flexible supporting arms. The air jet loom let-off device has the advantages of transmitting power of the positive type warp loosening mechanism or the passive type tension mechanism to the internal sides of the machine frames from the external sides and being reasonable in integral mechanism and stable and reliable in performance.
Description
Technical Field
The utility model relates to an air jet loom especially relates to an air jet loom let-off motion.
Background
The let-off device of the air jet loom has the function of timely sending out a certain amount of warp yarns with certain tension in the weaving process according to the requirement of the fabric organization on the weft density in the whole weaving process so as to maintain the continuous weaving production. Whether the warp tension is uniform or not when the beam changes from large to small in the weaving process is a main standard for measuring the performance of the let-off device, and the size and the stability of the warp tension depend on the size of the let-off quantity to a great extent. Some weaving defects of the fabric are caused by uneven warp feeding, for example, the cloud weaving is caused by uneven warp feeding of short segments, and the long and short codes are caused by uneven warp feeding of long segments, so that the quality of the warp feeding device directly influences the quality of the fabric and the continuous production.
Let-off devices can be classified into three basic types from the way they deliver warp yarns, namely: a passive tension mechanism, a semi-active semi-passive let-off device and an active let-off device. At present, no matter an active let-off device or a passive tension mechanism, in order to ensure the rigidity of a tension roller, the supporting point of the tension roller is arranged on the inner side of a roller supporting frame, namely the power of the device is arranged on the inner side of a loom wallboard. Some air jet looms solve the problems by directly lengthening the rear beam to extend to the outer side of the roller support, but the roller is lengthened, the weight is increased, the rigidity is weakened, the roller deformation causes larger warp tension difference, the machine parts are quickly abraded, and the service life is shortened.
It will thus be seen that the prior art is susceptible to further improvements and enhancements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a let-off device of an air jet loom, which avoids the defects of the prior art.
The utility model discloses the technical scheme who adopts does:
a let-off device of an air jet loom comprises a left frame and a right frame which have the same structure, wherein a tension roller and a transition roller are arranged between the left frame and the right frame, and the left frame and the right frame respectively comprise a lifting support and a positioning seat arranged above the lifting support; the two positioning seats are respectively provided with a tension roller supporting mechanism, each tension roller supporting mechanism comprises a rocking shaft, one end of each rocking shaft is provided with a rocking arm, the other end of each rocking shaft is provided with a movable supporting arm, the rocking arms are positioned on the outer sides of the left and right frames, the movable supporting arms are positioned on the inner sides of the left and right frames, the outer sides of the rocking arms are connected with an active warp loosening mechanism or a passive tension mechanism, and each movable supporting arm is provided with a bushing or a bearing for installing the tension roller.
Set up tension detection mechanism in addition between two positioning seats, this tension detection mechanism is including installing at a left side, connecting axle and two tension fulcrum shafts that are located the both sides of connecting axle and with the connecting axle coaxial line respectively between the frame of the right side, the connecting axle and above-mentioned tension roller, the transition roller is parallel to each other and the tension roller is located between connecting axle and the transition roller, each tension fulcrum shaft all links to each other with the connecting axle through the shaft coupling support arm, each shaft coupling support arm is installed respectively on the positioning seat, the connecting rod is installed to the one end of one of them shaft coupling support arm, this connecting rod links to each other with the lift support and is provided with tension sensor on the connecting rod, between above-mentioned rocker and the positioning seat, all.
The left end and the right end of the tension roller are respectively provided with a roller braking mechanism, the roller braking mechanism comprises a yoke-shaped device and a yoke-shaped device positioning plate, the yoke-shaped device is sleeved at one end of the tension roller and connected with the rocker arm, one end of the yoke-shaped device is fastened on the yoke-shaped device positioning plate through a fixing bolt, and the other end of the yoke-shaped device is connected with the yoke-shaped device positioning plate through an adjusting bolt.
The active warp loosening mechanism comprises a warp loosening component and a warp loosening rod connected with the rocker arm, the warp loosening component comprises a warp loosening disc, one end of the warp loosening rod is connected with the rocker arm through a joint bearing, the other end of the warp loosening rod is connected with the warp loosening disc through a telescopic connecting rod, a rolling bearing is installed in the warp loosening disc, an eccentric sleeve is installed in an inner ring of the rolling bearing, and the eccentric sleeve is connected with a driving shaft of the weaving machine.
The passive tension mechanism comprises a connecting plate and a tension rod, the connecting plate is fixed on the positioning seat, a rotatable rotating support shaft is mounted on the connecting plate, a through hole through which the tension rod can pass is formed in the rotating support shaft, one end of the tension rod is hinged to the rocker arm, and the other end of the tension rod is sleeved with a tension spring and an adjusting nut used for limiting the tension spring.
An elastic friction plate is arranged between the yoke-shaped device and the tension roller.
The plane of the contact surface of the yoke and the yoke positioning plate is parallel to the central axis of the tension roller.
And the outer sides of the left frame and the right frame are provided with scale plates.
The shaft diameter of the connecting shaft is smaller than the roller diameter of the tension roller.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:
the utility model discloses transmit the inboard with the outside of positive formula loose warp mechanism and negative tension mechanism from the frame, the strong point of warp tension roller is in the inboard of frame, when having guaranteed roller support rigidity, has solved the loose warp volume that original let-off motion exists and the problem of loose warp time adjustment difficulty, makes the loom structure more reasonable, has improved the complete machine performance of loom.
Drawings
FIG. 1 is a schematic structural diagram of a let-off device of an air jet loom with an active warp loosing mechanism.
Fig. 2 is a rear view of a let-off device of an air jet loom with an active warp loosing mechanism.
Fig. 3 is a top view of a warp let-off device of an air jet loom with an active warp loosing mechanism.
Fig. 4 is a left side view of a let-off device of an air jet loom with an active warp loosing mechanism.
Fig. 5 is a view from a-a of fig. 2.
Fig. 6 is a view from direction F-F of fig. 5.
Fig. 7 is a view from direction B-B of fig. 2.
Fig. 8 is a view from direction C-C of fig. 2.
Fig. 9 is a view from direction D-D of fig. 4.
Fig. 10 is a plan view of a let-off device of an air jet loom with a passive tension mechanism.
Fig. 11 is a left side view of a let-off device of an air jet loom with a passive tension mechanism.
Wherein,
1. the tension roller comprises a frame 101, a left frame 102, a right frame 103, a lifting support 104, a positioning seat 105, a transition roller 106, a tension roller 2, a tension roller supporting mechanism 201, a rocking shaft 202, a rocking arm 203, a movable arm 3, a tension detecting mechanism 301, a connecting shaft 302, a coupling arm 303, a tension fulcrum 304, a connecting rod 305, a tension sensor 306, a self-aligning bearing 307, a first rolling bearing 4, a roller braking mechanism 401, a yoke positioning plate 402, a yoke 403, an elastic friction plate 404, a fixing bolt 405, an adjusting bolt 5, an active warp loosening mechanism 501, a warp loosening disc 502, a telescopic connecting rod 503, a warp loosening rod 504, an eccentric sleeve 505, a locking hoop 506, a second rolling bearing 507, a joint bearing 6, a passive tension device 601, a connecting plate 602, a rotating fulcrum 603, a rotating shaft 603, a tension roller supporting mechanism 201, Tension rod 604, tension spring 605, adjusting nut 7 and scale plate
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, a let-off device of an air jet loom comprises a frame 1, wherein the frame 1 comprises a left frame 101 and a right frame 102 which have the same structure, scale plates 7 are arranged on the outer sides of the left frame and the right frame, a tension roller 106 and a transition roller 105 are arranged between the left frame and the right frame, and the left frame and the right frame respectively comprise a lifting support 103 and a positioning seat 104 arranged above the lifting support 103; the two positioning seats 104 are respectively provided with tension roller supporting mechanisms 2, each tension roller supporting mechanism 2 comprises a rocking shaft 201, one end of each rocking shaft 201 is provided with a rocker arm 202, the other end of each rocking shaft 201 is provided with a movable supporting arm 203, the rocker arms 202 are positioned on the outer sides of the left and right frames, the movable supporting arms 203 are positioned on the inner sides of the left and right frames, the movable supporting arms 203 and the rocker arms 202 are connected together to synchronously rotate under the connection of the rocking shafts 201, the outer side of each rocker arm 202 is connected with an active warp loosening mechanism 5 or a passive tension mechanism 6, and each movable supporting arm 203 is provided with a bushing or a bearing for installing the tension roller 106; a tension detection mechanism 3 is arranged between the two positioning seats 104, the tension detection mechanism 3 comprises a connecting shaft 301 arranged between the left and right frames and two tension fulcrum shafts 303 which are respectively positioned at two sides of the connecting shaft 301 and are coaxial with the connecting shaft 301, the tension fulcrum shafts 303 are arranged on the positioning seats through first rolling bearings 307, the shaft diameter of the connecting shaft is smaller than the roller diameter of the tension roller, the connecting shaft is parallel to the tension roller and the transition roller, the tension roller is positioned between the connecting shaft and the transition roller, each tension fulcrum shaft is connected with the connecting shaft through a coupling support arm, each coupling support arm is respectively arranged on the positioning seats 104, one end of one coupling support arm 302 is provided with a connecting rod 304, the connecting rod 304 is connected with the lifting support 103, a tension sensor 305 is arranged on the connecting rod 304, the tension sensor 305 can sense the torque generated by the tension fulcrum shafts 303, and the tension between the rocking shaft, Self-aligning bearings 306 are arranged between the rocking shaft 201 and the coupling support arm 302.
The utility model discloses having supported a rocker 201 with positioning seat 104 and shaft coupling support arm 302, there is self-aligning bearing to support the both ends of rocker 201, this kind of bearing structure can allow inside and outside strong point to have relative small removal, that is to say, allow rocker 201 can have slight slope, although the support central point of self-aligning bearing between rocker 201 and positioning seat 104 is fixed, but do not influence the self-aligning bearing between rocker 201 and shaft coupling support arm 302 and can slightly remove, this kind of bearing structure has guaranteed that shaft coupling support arm 302's rotation trend is not influenced, the tensile pressure of warp just can be through activity support arm 203 on coming from tension roll 106, rocker 201 all transmits formation torque on shaft coupling support arm 302, tension sensor 305 also can be very sensitive accurate to the tensile detection of warp. It should be noted that, under the action of the tensions with different sizes, the length change of the tension sensor 305 is very small and can be ignored; in addition, the left and right frames are connected together through a connecting shaft 301, so that the warp tension sensed by the whole loom tension roller 106 can be transmitted to a tension sensor 305, and the tension detection is comprehensive and reliable. The utility model discloses utilize self-aligning bearing's characteristic, play the rocker 201 of an arbitrary slope with two point support, rocker 202 is also installed between two bearings, reasonable axle support and part are arranged and have been guaranteed to support intensity, positive loose warp motion and tension detection performance under also having guaranteed high-speed operation and the great tension state simultaneously can both be accurate reliable, it needs further to explain, it fixes a position to the route of warp to have a transition roller 105 at the back generally at tension roller 106, in order to guarantee that the warp is acted on the unchangeable pressure on tension roller 106.
As shown in fig. 2, 7 and 8, for the rotation control of the tension roller 106, the existing air-jet loom generally rotates or is fixed, which causes uneven wear of the tension roller 106, and flexible rotation is not ideal for weaving some fabrics, therefore, the existing braking structure of the tension roller 106 can not meet the needs of users, in the utility model, the left and right ends of the tension roller 106 are respectively provided with a roller braking mechanism 4, the roller braking mechanism 4 comprises a yoke 402 and a yoke positioning plate 401, the plane of the contact surface of the yoke 402 and the yoke positioning plate 401 is parallel to the central axis of the tension roller 106, the yoke 402 is sleeved at one end of the tension roller 106, an elastic friction plate 403 is arranged between the yoke 402 and the tension roller 106, the yoke positioning plate 401 is connected with the rocker 202, one end of the yoke 402 is fastened on the yoke positioning plate 401 by a fixing bolt 404, And the other end is connected to the yoke positioning plate 401 by an adjusting bolt 405. The utility model discloses in, adjusting bolt 405 and fixing bolt 404 cramp yoke 402 and elastic friction piece 403 on the periphery of tension roller, because the elasticity of elastic friction piece 403 can realize the slow change of the power of cramping, can realize the required braking force of different fabrics through adjusting bolt 405, with the plane at yoke 402 and yoke locating plate 401's contact surface place and the central axis of tension roll 106 design into the influence that reducible arrestment mechanism that is parallel to each other rotates the roller in a flexible way.
As shown in fig. 3 and 9, the active warp loosing mechanism 5 comprises a warp loosing assembly and a warp loosing rod 503 connected with the rocker arm 202, the warp loosing assembly comprises a warp loosing disc 501, one end of the warp loosing rod 503 is connected with the rocker arm 202 through a joint bearing 507, the other end is connected with the warp loosing disc 501 through a telescopic connecting rod 502, the length can be adjusted according to the requirements of weaving process, a second rolling bearing 506 is installed in the warp releasing disc 501, an eccentric sleeve 504 is installed in the inner ring of the second rolling bearing 506, the eccentric sleeve 504 is connected with a loom driving shaft, the eccentric sleeve 504 with the angle adjusted is locked by a locking hoop 505 to rotate synchronously with the loom driving shaft, the eccentric sleeve 504, the warp releasing rod 503, the rocker arm 202 and the loom body form a four-bar mechanism, and when the loom operates, under the action of the driving shaft, the eccentric sleeve 504 can drive the rocker arm 202 to swing, so that the tension roller 106 is driven to swing actively to form active warp releasing motion.
As shown in fig. 10 and 11, the passive tension mechanism 6 includes a connection plate 601 and a tension rod 603, the connection plate 601 is fixed on the positioning seat 104, a rotatable rotation fulcrum 602 is mounted on the connection plate 601, a through hole for the tension rod 603 to pass through is formed in the rotation fulcrum 602, one end of the tension rod 603 is hinged to the rocker 202, a tension spring 604 and an adjusting nut 605 for limiting the tension spring 604 are sleeved on the other end of the tension rod 603, a pressure of warp tension applied to the tension roller 106 is transmitted to the tension spring 604 through the rocker 201, and the adjustment of the warp tension can be realized by adjusting the adjusting nut 605.
The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Although terms such as the left frame 101, the lifting bracket 103, the tension roller supporting mechanism 2, the movable arm 203, the tension detecting mechanism 3, the tension fulcrum shaft 303, the roller braking mechanism 4, the yoke positioning plate 401, the elastic friction plate 403, the positive warp loosening mechanism 5, the locking hoop 505, the negative tension device 6, the tension spring 604, the scale plate 7, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
It is further understood that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides an air jet loom let-off motion, includes the same left side frame and right frame of structure, installs tension roller and transition roller between the left and right frame, its characterized in that: the left and right frame all includes lifting support and installs the positioning seat in lifting support top, install tension roll supporting mechanism on two positioning seats respectively, each tension roll supporting mechanism all includes the rocking shaft, the rocking arm is all installed to the one end of each rocking shaft, the movable support arm is all installed to the other end, the rocking arm is located the outside of left and right frame, the movable support arm is located the inboard of left and right frame, the outside of each rocking arm is connected with positive formula loose warp mechanism or negative formula tension mechanism, all be provided with bush or the bearing that is used for installing above-mentioned tension roll on each movable support arm.
2. An air jet loom let-off device according to claim 1, wherein: set up tension detection mechanism in addition between two positioning seats, this tension detection mechanism is including installing at a left side, connecting axle and two tension fulcrum shafts that are located the both sides of connecting axle and with the connecting axle coaxial line respectively between the frame of the right side, the connecting axle and above-mentioned tension roller, the transition roller is parallel to each other and the tension roller is located between connecting axle and the transition roller, each tension fulcrum shaft all links to each other with the connecting axle through the shaft coupling support arm, each shaft coupling support arm is installed respectively on the positioning seat, the connecting rod is installed to the one end of one of them shaft coupling support arm, this connecting rod links to each other with the lift support and is provided with tension sensor on the connecting rod, between above-mentioned rocker and the positioning seat, all.
3. An air jet loom let-off device according to claim 1, wherein: the left end and the right end of the tension roller are respectively provided with a roller braking mechanism, the roller braking mechanism comprises a yoke-shaped device and a yoke-shaped device positioning plate, the yoke-shaped device is sleeved at one end of the tension roller and connected with the rocker arm, one end of the yoke-shaped device is fastened on the yoke-shaped device positioning plate through a fixing bolt, and the other end of the yoke-shaped device is connected with the yoke-shaped device positioning plate through an adjusting bolt.
4. An air jet loom let-off device according to claim 1, wherein: the active warp loosening mechanism comprises a warp loosening mechanism and a warp loosening rod connected with the rocker arm, the warp loosening mechanism comprises a warp loosening disc, one end of the warp loosening rod is connected with the rocker arm through a joint bearing, the other end of the warp loosening rod is connected with the warp loosening disc through a telescopic connecting rod, a rolling bearing is installed in the warp loosening disc, an eccentric sleeve is installed in an inner ring of the rolling bearing, and the eccentric sleeve is connected with a driving shaft of the weaving machine.
5. An air jet loom let-off device according to claim 1, wherein: the passive tension mechanism comprises a connecting plate and a tension rod, the connecting plate is fixed on the positioning seat, a rotatable rotating support shaft is mounted on the connecting plate, a through hole through which the tension rod can pass is formed in the rotating support shaft, one end of the tension rod is hinged to the rocker arm, and the other end of the tension rod is sleeved with a tension spring and an adjusting nut used for limiting the tension spring.
6. An air jet loom let-off device according to claim 3, wherein: an elastic friction plate is arranged between the yoke-shaped device and the tension roller.
7. An air jet loom let-off device according to claim 3 or 6, wherein: the plane of the contact surface of the yoke and the yoke positioning plate is parallel to the central axis of the tension roller.
8. An air jet loom let-off device according to claim 1, wherein: and the outer sides of the left frame and the right frame are provided with scale plates.
9. An air jet loom let-off device according to claim 2, wherein: the shaft diameter of the connecting shaft is smaller than the roller diameter of the tension roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132299.1U CN203807667U (en) | 2014-03-24 | 2014-03-24 | Air jet loom let-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132299.1U CN203807667U (en) | 2014-03-24 | 2014-03-24 | Air jet loom let-off device |
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| Publication Number | Publication Date |
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| CN203807667U true CN203807667U (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420132299.1U Expired - Lifetime CN203807667U (en) | 2014-03-24 | 2014-03-24 | Air jet loom let-off device |
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| Country | Link |
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| CN (1) | CN203807667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898668A (en) * | 2014-03-24 | 2014-07-02 | 青岛天一集团红旗纺织机械有限公司 | Let-off device of air jet loom |
| CN106435969A (en) * | 2016-10-31 | 2017-02-22 | 青岛天集团红旗纺织机械有限公司 | Positive warp loosening device of water jet loom |
| CN108950827A (en) * | 2018-07-13 | 2018-12-07 | 青岛天集团红旗纺织机械有限公司 | A kind of back rest support device of external loose warp |
-
2014
- 2014-03-24 CN CN201420132299.1U patent/CN203807667U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898668A (en) * | 2014-03-24 | 2014-07-02 | 青岛天一集团红旗纺织机械有限公司 | Let-off device of air jet loom |
| CN103898668B (en) * | 2014-03-24 | 2015-07-08 | 青岛天一集团红旗纺织机械有限公司 | Let-off device of air jet loom |
| CN106435969A (en) * | 2016-10-31 | 2017-02-22 | 青岛天集团红旗纺织机械有限公司 | Positive warp loosening device of water jet loom |
| CN108950827A (en) * | 2018-07-13 | 2018-12-07 | 青岛天集团红旗纺织机械有限公司 | A kind of back rest support device of external loose warp |
| CN108950827B (en) * | 2018-07-13 | 2023-09-29 | 青岛天一红旗纺机集团有限公司 | Back beam supporting device of external loose warp |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20150708 |
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| RGAV | Abandon patent right to avoid regrant |