CN109735999B - Parallel beating-up device for three-dimensional fabric - Google Patents
Parallel beating-up device for three-dimensional fabric Download PDFInfo
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- CN109735999B CN109735999B CN201910064854.9A CN201910064854A CN109735999B CN 109735999 B CN109735999 B CN 109735999B CN 201910064854 A CN201910064854 A CN 201910064854A CN 109735999 B CN109735999 B CN 109735999B
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- 239000004744 fabric Substances 0.000 title claims abstract description 35
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 50
- 230000033001 locomotion Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 2
- 238000003780 insertion Methods 0.000 abstract description 14
- 230000037431 insertion Effects 0.000 abstract description 14
- 230000001133 acceleration Effects 0.000 description 9
- 229920000049 Carbon (fiber) Polymers 0.000 description 8
- 239000004917 carbon fiber Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000009941 weaving Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
The invention discloses a parallel beating-up device for a three-dimensional fabric, which comprises a reed seat horizontally arranged during beating-up, wherein a reed vertical to the reed seat is fixedly connected to the reed seat, the reed seat is provided with a rear support frame and a front support frame which are hinged with the reed seat, the rear support frame and the front support frame are constructed into a double-rocker four-bar mechanism, a stroke driving rod and a return driving rod are fixedly connected to the front support frame, the stroke driving rod and the return driving rod are driven by a conjugate cam, and the conjugate cam is arranged on a cam rotating shaft. The invention adopts the conjugate cam to drive the long swing arm-rear supporting frame in the four connecting rods, and compared with the condition of driving the short swing arm-front supporting frame and having a certain reed movement stroke, the invention has the advantages of smaller movement angle of the conjugate cam, larger weft insertion angle and weft insertion time and more favorability for weft insertion. The conjugate cam is adopted for driving, is more suitable for high-speed and heavy-load working conditions, and is particularly suitable for multi-layer fabrics with relatively large beating-up resistance.
Description
Technical Field
The invention belongs to the technical field of textile, and particularly relates to a parallel beating-up device for a three-dimensional fabric.
Background
The beating-up mechanism is one of five mechanisms of the loom, plays a key role in the formation process of the fabric, and pushes weft yarns introduced into a weaving port to the fabric, so that the warp yarns and the weft yarns are buckled and interweaved with each other to form a compact fabric.
Patent document CN206666744U discloses a beating-up mechanism of an air jet loom, wherein driving motors are respectively arranged at two sides of a frame of the beating-up mechanism, torque is provided for a main shaft of the beating-up mechanism through a coupling, and a reed swings around a sley support during beating-up. The carbon fiber three-dimensional fabric comprises a carbon fiber multi-layer fabric and a carbon fiber hollow fabric, and the biggest difference between the carbon fiber multi-layer fabric and common clothing fabric cloth is that the thickness of the carbon fiber three-dimensional fabric is often larger, weft yarns in a weaving port are arranged at different horizontal heights in parallel, the motion form of a reed of a common cloth loom beating-up mechanism is swinging along an arc track, if the reed of the carbon fiber three-dimensional loom still swings along the arc track, the stress of weft yarns in different layers of the carbon fiber three-dimensional fabric is uneven during beating-up, and each layer of weft yarns cannot be ensured to smoothly enter the weaving port, so that the quality of the carbon fiber three-dimensional fabric is greatly reduced. Patent document CN204455469U discloses a parallel beating-up device for a three-dimensional fabric, which consists of a sinusoidal mechanism and a guide rod mechanism, through which the reed is made to perform a horizontal movement, i.e. parallel beating-up. The reed moves at a uniform speed when the parallel beating-up device for the three-dimensional fabric beats up, has small abrasion to weft yarns, but the starting and ending acceleration of beating-up is not zero, and has larger impact on a loom. The parallel beating-up device for the three-dimensional fabric disclosed in the patent document CN204325671U realizes parallel beating-up by a connecting rod driven by a cam, can be used for weaving double-layer and multi-layer fabrics, and has the advantages that the cam drives a short swing rod to swing, compared with a long swing rod, the total angle of the pushing motion and the return motion of the cam is larger, the weft insertion angle is reduced, the weft insertion time is short, and the weft insertion is not facilitated.
Disclosure of Invention
The invention provides a parallel beating-up device for a three-dimensional fabric, which aims to solve the technical problems in the prior art.
The invention adopts the technical proposal for solving the technical problems in the prior art that: a parallel beating-up device for three-dimensional fabric, including the reed frame that the level set up when beating-up the rigid coupling has rather than vertically reed on the reed frame, the reed frame be equipped with rather than articulated back support frame and preceding support frame, the reed frame back support frame with preceding support frame is equipped with pushing away journey actuating lever and return stroke actuating lever on the preceding support frame rigid coupling, pushing away journey actuating lever with the return stroke actuating lever is driven by a conjugate cam, the conjugate cam is installed on the cam revolving axle.
Based on the scheme, the invention also makes the following improvements:
the conjugate cam is provided with a main cam and a secondary cam, the stroke driving rod is contacted with the main cam through a stroke roller, the return driving rod is contacted with the secondary cam through a return roller, and the outline curve expression of the conjugate cam is as follows:
wherein:λ＝arctg[(l-acosψ 0 )/asinψ 0 ]the method comprises the steps of carrying out a first treatment on the surface of the The coefficient p= -1 is the secondary cam, and p= 1 is the primary cam; l is the length of the push driving rod or the length of the return driving rod; a is the offset coefficient of the push roller or the return roller; b is the direction coefficient of the push driving rod or the return driving rod; a is the center distance between the conjugate cam and the push driving rod or the return driving rod; θ is the reed motion law, and is determined according to the beating-up process; η is the conjugate cam angle; psi phi type 0 The initial position angle of the push driving rod is set; beta is the pressure angle of the conjugate cam to the pushing roller or the return roller; r is R 0 Is the base radius of the conjugate cam; r is the radius of the push roller or the return roller;
the installation angle delta between the main cam and the auxiliary cam is as follows:
wherein: psi phi type 01 Psi (phi) 02 The initial angles of the push driving rod and the return driving rod are respectively; r is R 1 The radius of the base circle of the main cam; r is R 2 Is the base radius of the secondary cam; r is R m Is a large radius of the secondary cam.
The cam rotary shaft is provided with a large gear which is meshed with a small gear, the small gear is arranged on a worm wheel shaft, the worm wheel shaft is provided with a worm wheel which is meshed with a worm, and the worm is driven by a motor.
The motor is a servo motor.
The invention has the advantages and positive effects that: the long swing arm-rear supporting frame in the four connecting rods is driven by the conjugate cam, compared with the short swing arm-front supporting frame, under the condition that the reed motion stroke is fixed, the motion angle of the conjugate cam is smaller, and the weft insertion angle and the weft insertion time are larger, so that weft insertion is facilitated. The conjugate cam is adopted for driving, is more suitable for high-speed and heavy-load working conditions, and is particularly suitable for multi-layer fabrics with relatively large beating-up resistance.
By optimizing the shape of the conjugate cam, the head and tail of the output motion rule acceleration curve is zero, the acceleration curve is continuous and smooth, the acceleration of the dead center position before beating-up is the largest in the negative direction, and the inertial beating-up is satisfied.
The torque output by the motor can be increased by adopting a two-stage speed reducing mechanism comprising worm and gear transmission.
The servo motor is adopted to output different rotating speeds according to the beating-up force required by different fabrics through the control system, so that the change of the beating-up force is realized, the energy utilization rate can be improved, the device can be suitable for weaving hollow and multi-layer fabrics, and the product coverage rate of a beating-up mechanism is wider.
In conclusion, the invention has the advantages of large beating-up force, parallel beating-up, high response speed, wide product coverage and the like, and can be used for weaving hollow fabrics and multi-layer fabrics.
Drawings
FIG. 1 is a schematic diagram of the structural principle of the present invention;
fig. 2 is a graph showing a reed motion rule in the embodiment of the present invention.
In the figure: 1. a motor; 2. a worm; 3. a worm wheel; 4-1, a main cam; 4-2, an auxiliary cam; 5. a large gear; 6. a rear support; 7. a reed seat; 8. reed; 9. a front support; 10. a stroke roller; 11. a push drive rod; 12. a return drive lever; 13. a return roller; 14. a cam rotating shaft; 15. and a worm wheel rotating shaft.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
referring to fig. 1, a parallel beating-up device for three-dimensional fabrics comprises a reed seat 7 horizontally arranged during beating-up, a reed 8 vertical to the reed seat 7 is fixedly connected to the reed seat 7, a rear support frame 6 and a front support frame 9 hinged to the reed seat 7 are arranged on the reed seat 7, the rear support frame 6 and the front support frame 9 form a double-rocker four-bar mechanism, a push travel driving rod 11 and a return travel driving rod 12 are fixedly connected to the front support frame 9, the push travel driving rod 11 and the return travel driving rod 12 are driven by a conjugate cam, and the conjugate cam is arranged on a cam rotating shaft 14.
The double-rocker four-bar mechanism driven by the conjugate cam can enable the dead center position of the reed seat 7 to be in a horizontal state before beating-up, further enable the reed 8 to be in a vertical state to finish parallel beating-up, and meanwhile, the multi-layer weft yarns are pushed, so that the weaving quality is improved.
The conjugate cam is provided with a main cam 4-1 and a secondary cam 4-2, the stroke driving rod 11 is contacted with the main cam 4-1 through a stroke roller 10, the return driving rod 12 is contacted with the secondary cam 4-2 through a return roller 13, in this embodiment, in order to reduce the impact force of the beating-up mechanism on the loom, the requirement of inertial beating-up is met, and the profile curve expression of the conjugate cam is:
wherein:λ＝arctg[(l-acosψ 0 )/asinψ 0 ]the method comprises the steps of carrying out a first treatment on the surface of the The coefficient p= -1 is the secondary cam, and p= 1 is the primary cam; l is the length of the push driving rod or the length of the return driving rod; a is the offset coefficient of the push roller or the return roller; b is the direction coefficient of the push driving rod or the return driving rod; a is the center distance between the conjugate cam and the push driving rod or the return driving rod; θ is the reed motion law, and is determined according to the beating-up process; η is the conjugate cam angle; psi phi type 0 The initial position angle of the push driving rod is set; beta is the pressure angle of the conjugate cam to the pushing roller or the return roller; r is R 0 Is the base radius of the conjugate cam; r is the radius of the push roller or the return roller; the installation angle delta between the main cam and the auxiliary cam is as follows:
wherein: psi phi type 01 Psi (phi) 02 The initial angles of the push driving rod and the return driving rod are respectively; r is R 1 The radius of the base circle of the main cam; r is R 2 Is the base radius of the secondary cam; r is R m Is a large radius of the secondary cam.
The beta is the pressure angle of the conjugate cam to the push roller or the return roller,
referring to fig. 2, a curve θ is a displacement curve, which is a motion law of a sine and cosine combined reed determined by a beating-up process, and the motion law of the sine and cosine combined reed is composed of five sections of piecewise functions, specifically as follows:
wherein: h 1 H and H 2 The maximum positive acceleration and the maximum negative acceleration of the reed are respectively determined by the beating-up process of the woven fabric; η (eta) 0 Beating up an effective corner for the conjugate cam; omega μ Is the angular velocity of a conjugate cam; omega is the actual angular velocity of the conjugate cam; n is a natural number; t is time; the sine and cosine combined motion law design parameters b and c are determined by a beating-up process.
Substituting the sine and cosine combined motion law function into a conjugate cam contour line solving formula to obtain the shape of the needed conjugate cam. The conjugate cam obtained based on the sine and cosine combined motion law has the output motion characteristic that the acceleration of the driven member is zero at the beginning and the end in one period, is continuous, smooth and free from abrupt change, and the mechanism has no impact vibration on the loom under the motion characteristic in theory; the acceleration curve is continuous and smooth, the acceleration of the dead center position before beating-up is the largest in the negative direction, and the requirement of inertial beating-up is met.
In this embodiment, in order to increase the output torque, a large gear 5 is mounted on the cam rotary shaft 14, the large gear 5 is meshed with a small gear 3, the small gear 3 is mounted on a worm wheel shaft 15, a worm wheel 3 is mounted on the worm wheel shaft 15, the worm wheel 3 is meshed with a worm 2, and the worm 2 is driven by a motor 1. The torque output by the motor can be increased by adopting a two-stage speed reducing mechanism comprising worm and gear transmission.
In the present embodiment, it is recommended that the motor 1 be a servo motor. The reason is that: different fabrics need the beating-up force of equidimension, and the change of beating-up force accessible changes servo motor's rotational speed and realizes the change of rotational speed through its control system, therefore adopts servo motor to beat-up drive to change beating-up force size very convenient.
The working principle of the invention is as follows:
the motor 1 transmits driving force to the conjugate cam through the worm gear and the pair of big and small gears, the conjugate cam rotates at a constant speed around the cam rotating shaft, and the main cam 4-1 applies positive pressure to the stroke roller 10 in the pushing process, so that the stroke driving rod 11 and the rear supporting frame 9 are pushed to swing clockwise, and the rear supporting frame 9 drives the reed 8 to swing towards the dead center position before beating-up. After the reed 8 reaches the dead center position before beating-up to finish beating-up, the auxiliary cam 4-2 applies positive pressure to the return roller 13, so that the return driving rod 12 and the rear supporting frame 9 are pushed to swing anticlockwise, the rear supporting frame 9 drives the reed 8 to swing towards the dead center position after beating-up, and then the return roller 13 is positioned at the rest circle part of the conjugate cam, and at the moment, the reed 8 is stationary. According to the length of weft insertion time, the return roller 13 can control the motor 1 to slow down or stop rotating when being positioned on the resting circle part of the conjugate cam so as to realize the coordination work of weft insertion and beating-up. By designing the rear supporting frame 9, the front supporting frame 6 and the reed seat 7, the invention realizes that the reed 8 is in a vertical state and moves horizontally when in a dead center position before beating up, namely, the beating-up force of the reed on each layer of weft yarn is uniform. Compared with the driving of the short rocker-front support frame 6, the long rocker-rear support frame 9 in the four connecting rods is driven by the conjugate cam, and under the condition that the motion stroke of the reed 8 is fixed, the motion angle of the conjugate cam is smaller, and the weft insertion angle and weft insertion time are larger, so that weft insertion is facilitated. The conjugate cam is adopted for driving, is more suitable for high-speed and heavy-load working conditions, and is particularly suitable for multi-layer fabrics with relatively large beating-up resistance.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are within the scope of the present invention.
Claims (3)
1. The parallel beating-up device for the three-dimensional fabric comprises a reed seat horizontally arranged during beating-up, wherein a reed vertical to the reed seat is fixedly connected to the reed seat, the reed seat is provided with a rear support frame and a front support frame which are hinged with the reed seat, and the reed seat, the rear support frame and the front support frame are structured into a double-rocker four-bar mechanism;
the conjugate cam is provided with a main cam and a secondary cam, the stroke driving rod is contacted with the main cam through a stroke roller, the return driving rod is contacted with the secondary cam through a return roller, and the outline curve expression of the conjugate cam is as follows:
wherein:the coefficient p= -1 is the secondary cam, and p= 1 is the primary cam; l is the length of the push driving rod or the length of the return driving rod; a is the offset coefficient of the push roller or the return roller; b is the direction coefficient of the push driving rod or the return driving rod; a is the center distance between the conjugate cam and the push driving rod or the return driving rod; θ is the reed motion law, and is determined according to the beating-up process; η is the conjugate cam angle; psi phi type 0 The initial position angle of the push driving rod is set; beta is the pressure angle of the conjugate cam to the pushing roller or the return roller; r is R 0 Is the base radius of the conjugate cam; r is the radius of the push roller or the return roller;
the installation angle delta between the main cam and the auxiliary cam is as follows:
wherein: psi phi type 01 Psi (phi) 02 The initial angles of the push driving rod and the return driving rod are respectively; r is R 1 The radius of the base circle of the main cam; r is R 2 Is the base radius of the secondary cam; r is R m Is a large radius of the secondary cam.
2. A parallel beating-up device for a solid fabric according to claim 1, wherein a large gear is mounted on the cam rotary shaft, the large gear being engaged with a small gear, the small gear being mounted on a worm wheel shaft, a worm wheel being mounted on the worm wheel shaft, the worm wheel being engaged with a worm, the worm being driven by a motor.
3. A parallel beating-up device for solid fabrics according to claim 2, wherein the motor is a servo motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910064854.9A CN109735999B (en) | 2019-01-23 | 2019-01-23 | Parallel beating-up device for three-dimensional fabric |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910064854.9A CN109735999B (en) | 2019-01-23 | 2019-01-23 | Parallel beating-up device for three-dimensional fabric |
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| CN109735999A CN109735999A (en) | 2019-05-10 |
| CN109735999B true CN109735999B (en) | 2024-01-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046899B (en) * | 2021-03-17 | 2022-03-22 | 山东日发纺织机械有限公司 | Beating-up mechanism and loom |
| CN114990765B (en) * | 2022-07-06 | 2023-07-21 | 天津工业大学 | Reed motion path planning and driving control method for spacer fabric |
| CN115074894B (en) * | 2022-07-06 | 2024-03-22 | 天津工业大学 | Double-layer rigid rapier driving and controlling method for spacer fabric |
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| CN101074512A (en) * | 2007-01-30 | 2007-11-21 | 浙江汇德纺机有限公司 | High-speed rapier loom |
| CN101831752A (en) * | 2010-05-25 | 2010-09-15 | 杭州天马纺织机械有限公司 | Non-inertial beating-up mechanism of weaving machine and sley motion method for implementing non-inertial beating-up |
| CN103161002A (en) * | 2011-12-09 | 2013-06-19 | 盐城纺织职业技术学院 | Reed transverse motion mechanism |
| CN203625585U (en) * | 2013-12-17 | 2014-06-04 | 浙江富润海茂纺织布艺有限公司 | Dual-conjugated-cam beating-up mechanism for loom |
| WO2016116193A1 (en) * | 2015-01-19 | 2016-07-28 | Picanol | Sley drive system for a weaving machine |
| CN209555474U (en) * | 2019-01-23 | 2019-10-29 | 天津工业大学 | A kind of parallel beating-up device for stereo fabric |
-
2019
- 2019-01-23 CN CN201910064854.9A patent/CN109735999B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074512A (en) * | 2007-01-30 | 2007-11-21 | 浙江汇德纺机有限公司 | High-speed rapier loom |
| CN101831752A (en) * | 2010-05-25 | 2010-09-15 | 杭州天马纺织机械有限公司 | Non-inertial beating-up mechanism of weaving machine and sley motion method for implementing non-inertial beating-up |
| CN103161002A (en) * | 2011-12-09 | 2013-06-19 | 盐城纺织职业技术学院 | Reed transverse motion mechanism |
| CN203625585U (en) * | 2013-12-17 | 2014-06-04 | 浙江富润海茂纺织布艺有限公司 | Dual-conjugated-cam beating-up mechanism for loom |
| WO2016116193A1 (en) * | 2015-01-19 | 2016-07-28 | Picanol | Sley drive system for a weaving machine |
| CN209555474U (en) * | 2019-01-23 | 2019-10-29 | 天津工业大学 | A kind of parallel beating-up device for stereo fabric |
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