CN101487162B - Four rod-non-circular gear beat-up method and beat-up mechanism - Google Patents
Four rod-non-circular gear beat-up method and beat-up mechanism Download PDFInfo
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- CN101487162B CN101487162B CN2009100961629A CN200910096162A CN101487162B CN 101487162 B CN101487162 B CN 101487162B CN 2009100961629 A CN2009100961629 A CN 2009100961629A CN 200910096162 A CN200910096162 A CN 200910096162A CN 101487162 B CN101487162 B CN 101487162B
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- circular gear
- beat
- crank
- main shaft
- rod
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Abstract
The invention discloses a four-rod-noncircular gear beat-up method and a beat-up mechanism. A crank rod AB is arranged on a loom main shaft and rotates together with the loom main shaft; a point A of the crank AB is the rotation center of the loom main shaft; a hinge point C of a connecting rod BC and a rocker CD is provided with a driving noncircular gear which is fixedly connected with the connecting rod BC; a driven noncircular gear is movably sheathed at a point D of a supporting shaft of the rocker CD; and a sley EF is fixedly connected with the driven noncircular gear. The noncircular gear mechanism and the crank rocker mechanism are used for changing the uniform rotation of the loom main shaft into the non-uniform intermittent swing of the sley. The beat-up method and the beat-up mechanism can meet the spinning process requirement of the loom, complete the beat-up actions, and carry out the mechanism parameter optimization by establishing a kinematic mathematic model of the noncircular gear and the crank rocker, thus realizing the complete stopping time of the sley at about 220 degrees at the rear center position, and completely meeting the beat-up process requirement of the loom; simultaneously, the mechanism has short transmission chain and compact structure.
Description
Technical field
The present invention relates to loom beating-up mechanism, be specifically related to a kind of four rod-non-circular gear beat-up mechanism.
Background technology
The effect of beating-up mechanism is the non-at the uniform velocity swing that the uniform speed rotation of loom main shaft is converted into slay, requires slay that dead time or " the approximate pause " time will be arranged in heart position, back, so that there is adequate time to finish the wefting insertion action.At present, the loom beating-up mechanism that sells on the market at home mainly contains: beat-up Conjugate Cam, the type mechanism is easy to satisfy the characteristics of motion of beating up and requiring, can realize the complete dead time about 240 °, but the cam profile requirement on machining accuracy is quite high, as exists error just to produce impact; Four connecting rod beating-up mechanisms, if the displacement of beating up about permission 5mm can realize " the approximate pause " time about 65 °, performance is mainly used in the Nonseparation slay than beat-up Conjugate Cam difference; Six connecting rod beating-up mechanisms, if allow the displacement of beating up about 5mm, can realize " the approximate pause " time about 120 °, its performance is better than four connecting rod beating-up mechanisms, but than beat-up Conjugate Cam difference, this mechanism's hinge point is more in addition, and cumulative errors are big, so requirement on machining accuracy is bigger than four connecting rod beating-up mechanisms.
Summary of the invention
The object of the present invention is to provide a kind of four rod-non-circular gear beat-up mechanism, this mechanism can realize that slay has the complete dead time about 220 ° in heart position, back, satisfy the technological requirement of beating up of loom fully; This mechanism driving chain is short simultaneously, compact conformation.
In order to achieve the above object, the technical solution used in the present invention is:
One. four rod-non-circular gear beat-up method:
Adopt non-circular gear mechanism and crank and rocker mechanism, the uniform rotation of loom main shaft is transformed into the non-at the uniform velocity intermittent swing of slay, thereby realizes the characteristics of motion that slay requires.
Two. four rod-non-circular gear beat-up mechanism:
Crank AB is contained on the loom main shaft and rotates with loom main shaft, the A point of crank AB is the center of rotation of loom main shaft, initiatively non-circular gear is equipped with at the hinge point C place of connecting rod BC and rocking bar CD, initiatively non-circular gear and connecting rod BC are fixed, driven non-circular gear kink is on the D of the back shaft of rocking bar CD point, and slay EF and driven non-circular gear are fixed.
The pitch curve of described active non-circular gear and driven non-circular gear is according to the parameter of crank and rocker mechanism, and derived by the ideal curve that beats up: crank and rocker mechanism connecting rod BC, rocking bar CD angular speed are w
2And w
3The time, driving and driven non-circular gear gearratio is expressed as in the loom main shaft corner is during 70～290 °: (w
3-w
2)/w
3, driven non-circular gear maintains static during this period, and promptly slay EF is motionless.
Described crank AB length is 40～80mm, and connecting rod BC length is 110～160mm, and rocking bar CD length is 240～300mm, and frame AD length is 150～250mm.
The beneficial effect that the present invention has is:
This mechanism can satisfy the weaving process requirement of loom, finish beating-up, and can be by setting up the kinematics Mathematical Modeling of non-circular gear and crank rocker, and carry out mechanism parameter optimization, thereby realize that slay has the complete dead time about 220 ° in heart position, back, satisfy the technological requirement of beating up of loom fully; This mechanism driving chain is short simultaneously, compact conformation.
Description of drawings
Accompanying drawing is the structural principle schematic diagram of mechanism of the present invention.
In the accompanying drawing: 1, non-circular gear initiatively, 2, driven non-circular gear.
The specific embodiment
Be described further of the present invention below in conjunction with drawings and Examples.
As shown in drawings, crank AB of the present invention is contained on the loom main shaft and rotates with loom main shaft, the A point of crank AB is the center of rotation of loom main shaft, initiatively non-circular gear 1 is equipped with at the hinge point C place of connecting rod BC and rocking bar CD, initiatively non-circular gear 1 is fixed with connecting rod BC, driven non-circular gear 2 kinks are on the D of the back shaft of rocking bar CD point, and slay EF and driven non-circular gear 2 are fixed.
The pitch curve of described active non-circular gear 1 and driven non-circular gear 2 is according to the parameter of crank and rocker mechanism, and derived by the ideal curve that beats up: crank and rocker mechanism connecting rod BC, rocking bar CD angular speed are w
2And w
3The time, driving and driven non-circular gear gearratio is expressed as in the loom main shaft corner is during 70～290 °: (w
3-w
2)/w
3, driven non-circular gear 2 maintains static during this period, and promptly slay EF is motionless.
Described crank AB length is 40～80mm, and connecting rod BC length is 110～160mm, and rocking bar CD length is 240～300mm, and frame AD length is 150～250mm.
Operation principle of the present invention is as follows:
As shown in drawings, when the present invention works, loom main shaft A uniform rotation, the crank AB that is contained on the loom main shaft rotates thereupon.Initiatively non-circular gear 1 is equipped with at the hinge point C place of connecting rod BC and rocking bar CD, initiatively non-circular gear 1 is fixed with connecting rod BC, do not relatively rotate between them, driven non-circular gear 2 kinks are on the D of the back shaft of rocking bar point, and promptly initiatively the center of rotation of non-circular gear 1 and driven non-circular gear 2 distance is the length of rocking bar CD just.When crank and rocker mechanism connecting rod BC, rocking bar CD angular speed are w
2And w
3, driving and driven non-circular gear gearratio is (w
3-w
2)/w
3The time, driven non-circular gear 2 maintains static, and slay EF and driven non-circular gear 2 are fixed, so slay EF is motionless, thereby realize 220 ° complete dead time of the back heart.
Claims (3)
1. four rod-non-circular gear beat-up mechanism, it is characterized in that: crank AB is contained on the loom main shaft and rotates with loom main shaft, the A point of crank AB is the center of rotation of loom main shaft, initiatively non-circular gear (1) is equipped with at the hinge point C place of connecting rod BC and rocking bar CD, initiatively non-circular gear (1) is fixed with connecting rod BC, driven non-circular gear (2) kink is on the D of the back shaft of rocking bar CD point, and slay EF and driven non-circular gear (2) are fixed.
2. a kind of four rod-non-circular gear beat-up according to claim 1 mechanism, it is characterized in that: the pitch curve of described active non-circular gear (1) and driven non-circular gear (2) is according to the parameter of crank and rocker mechanism, and derived by the ideal curve that beats up: crank and rocker mechanism connecting rod BC, rocking bar CD angular speed are w
2And w
3The time, driving and driven non-circular gear gearratio is expressed as in the loom main shaft corner is during 70～290 °: (w
3-w
2)/w
3, driven non-circular gear (2) maintains static during this period, and promptly slay EF is motionless.
3. a kind of four rod-non-circular gear beat-up according to claim 1 mechanism, it is characterized in that: described crank AB length is 40～80mm, and connecting rod BC length is 110～160mm, and rocking bar CD length is 240～300mm, and frame AD length is 150～250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100961629A CN101487162B (en) | 2009-02-16 | 2009-02-16 | Four rod-non-circular gear beat-up method and beat-up mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100961629A CN101487162B (en) | 2009-02-16 | 2009-02-16 | Four rod-non-circular gear beat-up method and beat-up mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101487162A CN101487162A (en) | 2009-07-22 |
| CN101487162B true CN101487162B (en) | 2010-08-25 |
Family
ID=40890216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100961629A Expired - Fee Related CN101487162B (en) | 2009-02-16 | 2009-02-16 | Four rod-non-circular gear beat-up method and beat-up mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101487162B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178888B (en) * | 2014-07-28 | 2015-11-04 | 吴江万工机电设备有限公司 | A kind of Dimension Synthesis method of high speed four bar beating-up mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4957143A (en) * | 1987-07-08 | 1990-09-18 | Nissan Motor Co., Ltd. | Reed operating system for loom |
| CN100999850A (en) * | 2006-12-30 | 2007-07-18 | 浙江理工大学 | Beating-up method with elliptic gear-crank rocker and beating-up mechanism |
| CN201362777Y (en) * | 2009-02-16 | 2009-12-16 | 浙江理工大学 | Four-bar non-circular gear beating-up mechanism |
-
2009
- 2009-02-16 CN CN2009100961629A patent/CN101487162B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4957143A (en) * | 1987-07-08 | 1990-09-18 | Nissan Motor Co., Ltd. | Reed operating system for loom |
| CN100999850A (en) * | 2006-12-30 | 2007-07-18 | 浙江理工大学 | Beating-up method with elliptic gear-crank rocker and beating-up mechanism |
| CN201362777Y (en) * | 2009-02-16 | 2009-12-16 | 浙江理工大学 | Four-bar non-circular gear beating-up mechanism |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-279005A 1995.10.24 |
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|---|---|
| CN101487162A (en) | 2009-07-22 |
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Granted publication date: 20100825 Termination date: 20120216 |