CN211284732U - Eight-cycle cam sheet, eight-cycle conjugate cam mechanism and weaving machine - Google Patents
Eight-cycle cam sheet, eight-cycle conjugate cam mechanism and weaving machine Download PDFInfo
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- CN211284732U CN211284732U CN201921663789.3U CN201921663789U CN211284732U CN 211284732 U CN211284732 U CN 211284732U CN 201921663789 U CN201921663789 U CN 201921663789U CN 211284732 U CN211284732 U CN 211284732U
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Abstract
The utility model provides an eight-cycle cam piece, eight-cycle conjugate cam mechanism and loom, eight-cycle cam piece includes main cam piece and auxiliary cam piece, the contour line of main cam piece comprises a section of circulation section at least, the circulation section includes in proper order and pushes away the journey section, far-off rest section, return stroke section and nearly rest section, realize the action of a endless "pushing away" and "returning", push away journey section and return stroke section are gradual change curve, make the acceleration do not have the sudden change in push away journey section and return stroke section, the impact that produces is less, nearly rest section and far-off rest section are the circular arc section, as the transition between push away journey section and the return stroke section, make the linking in the circulation section more smooth and easy, further reduce the impact, the angle of every circulation section is 45 multiples, the angle sum of all circulation sections on the contour line is 360, realize at least one circulation, because of strikeing little, eight-cycle cam piece also is little in the loss that the use produced, greatly reduces the use cost and improves the economic benefit.
Description
Technical Field
The utility model relates to a loom technical field especially relates to an eight circulation cam piece, eight circulation conjugate cam mechanism and loom.
Background
For more complex eight-cycle weave (e.g., corduroy varieties), the production cost can be greatly reduced by adopting active cam weaving instead of traditional dobby weaving. The running speed of the positive cam mechanism is high, the eight-cycle cam piece in the positive cam mechanism is subjected to large impact under the condition that the rotating speed is increased, and the phenomena of rapid jumping and shaking are easily generated, so that the eight-cycle cam piece is easy to generate loss, and the service life is short.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an eight circulation cam pieces that use loss is little.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an eight-cycle cam piece comprises a main cam piece and an auxiliary cam piece, wherein the contour line of the main cam piece at least comprises a section of cycle section, the cycle section sequentially comprises a push section, a far rest section, a return section and a near rest section, the push section and the return section are gradually changed curves, the near rest section and the far rest section are arc sections, the angle of each cycle section is a multiple of 45 degrees, and the sum of the angles of all the cycle sections on the contour line is 360 degrees.
Further, the angles of the push section, the far rest section, the return section and the near rest section are within the range of 0-5 degrees or within the range of plus or minus 5 degrees of multiples of 45 degrees.
Further, the gradual change curve is a simple harmonic motion curve or a cycloid motion curve or a polynomial curve.
Furthermore, the contour line of the main cam piece consists of a section of circulation section; or the contour line of the main cam piece consists of three sections of circulation sections, and the angles of a push section, a far rest section, a return section and a near rest section in each section of circulation section are different.
The utility model also discloses an eight circulation conjugate cam mechanism, include the action wheel, from driving wheel and cam case, the cam case includes the box and locates transmission shaft, camshaft, eight circulation cam pieces and the opening arm in the box, wherein, eight circulation cam pieces are eight circulation cam pieces among the arbitrary above-mentioned technical scheme.
Furthermore, the driving wheel is connected with the driven wheel through a belt, one end of the transmission shaft is connected with the driven wheel in a transmission mode, a first helical gear is arranged at the other end of the transmission shaft, a second helical gear is arranged on the cam shaft, the transmission shaft is perpendicular to the cam shaft and is in transmission fit with the second helical gear through the first helical gear, the eight-cycle cam piece is sleeved on the cam shaft and rotates synchronously with the cam shaft, and the opening arm is in conjugate engagement with the eight-cycle cam piece.
Furthermore, the transmission ratio of the driven wheel to the driving wheel is 3:4, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 6; or the transmission ratio of the driven wheel to the driving wheel is 5:8, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 5; or the transmission ratio of the driven wheel to the driving wheel is 1:2, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 4.
Furthermore, a plurality of eight-cycle cam sheets are arranged, and the contour lines of the main cam sheets in each eight-cycle cam sheet are different; or, the eight-cycle cam piece is provided with a plurality of eight-cycle cam pieces, and the contour lines of the main cam pieces in the eight-cycle cam pieces are not completely the same.
Furthermore, two rollers are arranged on the shedding arm, the main cam piece is meshed with one roller, and the auxiliary cam piece is meshed with the other roller.
The utility model also discloses a loom, eight circulation conjugate cam mechanism, wherein, eight circulation conjugate cam mechanism are the eight circulation conjugate cam mechanism among the arbitrary above-mentioned technical scheme.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. the contour line of the main cam sheet is composed of at least one section of circulation section, the circulation section sequentially comprises a push stroke section, a far rest section, a return stroke section and a near rest section, the circular motion of pushing and returning in one cycle is realized, the push stroke section and the return stroke section are gradually changed curves, so that the speeds in the push stroke section and the return stroke section are not changed suddenly, the generated impact is small, the circular motion is suitable for high-speed motion, the near rest section and the far rest section are arc sections and are used as the transition between the push stroke section and the return stroke section, the connection in the circulation section is smooth, the impact is further reduced, the loss generated in the using process of the eight-cycle cam sheet is reduced, the use cost is greatly reduced, and the economic benefit is improved.
2. The gradual change curve is a simple harmonic motion curve, the cosine acceleration motion law is satisfied, the acceleration is not suddenly changed in the push stroke section and the return stroke section, the acceleration values at the initial and the final positions are limited, flexible impact is generated, and the impact strength is very small; or the gradual change curve is a cycloid motion curve, the sine acceleration motion law is met, the acceleration does not change suddenly in the push stroke section and the return stroke section, and no impact exists in the process; alternatively, the gradual change curve is a polynomial curve, such as a fifth-order polynomial curve, and the acceleration does not change suddenly in the push segment and the return segment, and no impact is generated in the process.
3. The utility model also discloses an eight circulation conjugate cam mechanism, include the action wheel, from driving wheel and cam case, the cam case includes box and locates transmission shaft, camshaft, eight circulation cam pieces and the opening arm in the box, and eight circulation cam pieces are eight circulation cam pieces among arbitrary above-mentioned technical scheme, because of this eight circulation cam piece is in the use, the impact of production is less, long service life for eight circulation conjugate cam mechanism need not often to change eight circulation cam pieces, and life is longer.
4. The transmission ratio of the driven wheel to the driving wheel is 3:4, the transmission ratio of the second bevel wheel to the first bevel wheel is 1:6, the six-cycle conjugate cam mechanism can be improved on the basis of the original six-cycle conjugate cam mechanism, the original box body structure does not need to be changed, the transmission ratio of the driven wheel to the driving wheel can be changed into 3:4 by means of the circulating gear of the original box body, the transmission ratio of the output end to the input end can be 1:8, and the manufacturing cost is reduced. The same can also be improved on a five-cycle conjugate cam mechanism or a four-cycle conjugate cam mechanism.
5. The utility model also discloses a loom, including eight circulation conjugate cam mechanism, eight circulation conjugate cam mechanism are eight circulation conjugate cam mechanism in arbitrary above-mentioned technical scheme, need not often to change eight circulation cam piece because of this eight circulation conjugate cam mechanism, long service life for the life of loom is longer, reduction in production cost.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of an eight-cycle cam plate according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of the cooperation between the eight-cycle cam piece and the open arm in the eight-cycle conjugate cam mechanism of the present invention.
Fig. 3 is a schematic structural view of the eight-cycle conjugate cam mechanism of the present invention.
Fig. 4 is a schematic structural view of an eight-cycle cam plate according to a second embodiment of the present invention.
The names of the components marked in the figures are as follows:
100. a driving wheel; 200. a driven wheel; 310. eight-cycle cam plate; 311. a main cam piece; 312. a sub cam piece; 320. a drive shaft; 321. a first helical gear; 330. a camshaft; 331. a second helical gear; 340. an opening arm; 341. a roller; 350. a box body; 400. a belt.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides an eight-cycle cam plate 310, which includes a main cam plate 311 and an auxiliary cam plate 312, wherein the centers of the main cam plate and the auxiliary cam plate are fixed relative to the center of the open arm shaft, so that the contour line of the main cam plate is designed and the contour line of the auxiliary cam plate is determined. The contour line of the main cam sheet is composed of at least one section of circulation section, the circulation section sequentially comprises a push stroke section, a far rest section, a return stroke section and a near rest section, so that the action of pushing and returning of one cycle is realized, the push stroke section and the return stroke section are gradually changed curves, so that the speeds of the push stroke section and the return stroke section are not changed suddenly, the generated impact is small, the main cam sheet is suitable for high-speed motion, the near rest section and the far rest section are arc sections and are used as the transition between the push stroke section and the return stroke section, the connection in the circulation section is smooth, the impact is further reduced, the loss generated in the using process of the eight-cycle cam sheet is reduced, the use cost is greatly reduced, and the economic benefit is improved; the angles of each circulation segment are multiples of 45 degrees, and the sum of the angles of all the circulation segments on the contour line is 360 degrees.
The angles of the push section, the far rest section, the return section and the near rest section are all in the range of 0-5 degrees or in the range of multiples of 45 degrees +/-5 degrees.
In this embodiment, the contour line of the main cam piece 311 is composed of three circulation segments, and the angles of the push segment, the far rest segment, the return segment and the near rest segment in each circulation segment are different. The point a to the point d are a first circulation section, and the point d to the point g are a second circulation section; a point g to a is a third circulation section, specifically, in the first circulation section, the ab section is a push section, the angle is 43 degrees (the angle of the ab section is the degree of an included angle between the point a and the point b and the point o, namely the degree of an angle beta in the figure, the point o is the center of the main cam piece and the auxiliary cam piece, and the angle of other sections can be obtained in the same way), the bc section is a far rest section, the angle is 4 degrees, the cd section is a return section, the angle is 43 degrees, the point d is a near rest section, the angle is 0 degree, and the angle of the first circulation section is 90 degrees; in the second circulation section, the de section is a push section, the angle is 43 degrees, the ef section is a far rest section, the angle is 49 degrees, the fg section is a return section, the angle is 43 degrees, the g point is a near rest section, the angle is 0 degree, and the angle of the second circulation section is 135 degrees; in the third circulation section, the section gh is a push section; the angle is 43 degrees, the hj section is a far rest section, the angle is 4 degrees, the jk section is a return section, the angle is 43 degrees, the ka section is a near rest section, the angle is 45 degrees, the angle of the third circulation section is 135 degrees, and the total angle of the three circulation sections on the contour line is 360 degrees.
The gradual change curves of the push stroke section and the return stroke section are sinusoidal acceleration curves, namely cycloid motion curves, so that the acceleration does not change suddenly, and impact is not generated.
It is understood that the gradual curves of the push segment and the return segment can also adopt a simple harmonic motion curve or a polynomial curve.
As shown in fig. 2 and fig. 3, the present invention further discloses an eight-cycle conjugate cam mechanism, which comprises a driving wheel 100, a driven wheel 200 and a cam box, wherein the cam box comprises a box 350, and a transmission shaft 320, a cam shaft 330, an eight-cycle cam piece 310 and an opening arm 350, which are arranged in the box 350, wherein the eight-cycle cam piece 310 adopts any one of the above technical solutions. Because the eight-cycle cam piece has small impact and long service life in the use process, the eight-cycle conjugate cam mechanism does not need to frequently replace the eight-cycle cam piece, and has long service life.
The driving wheel 100 is in transmission connection with the driven wheel 200 through a belt 400, one end of a transmission shaft 320 is in transmission connection with the driven wheel 200, the other end of the transmission shaft 320 is provided with a first bevel gear 321, a second bevel gear 331 is arranged on a cam shaft 330, the transmission shaft 320 is perpendicular to the cam shaft 330 and is in transmission fit with the second bevel gear 331 through the first bevel gear 321, an eight-cycle cam plate 310 is sleeved on the cam shaft 330 and rotates synchronously with the cam shaft 330, an opening arm 340 is in conjugate meshing with the eight-cycle cam plate 310, two rollers 341 are arranged on the opening arm 340, a main cam plate is meshed with one of the rollers, and an auxiliary cam plate is meshed with.
When the eight-cycle conjugate cam mechanism works, the driving wheel 100 drives the driven wheel 200 to rotate through the belt 400, the driven wheel 200 drives the transmission shaft 320 to rotate, the transmission shaft 320 drives the first bevel gear 321 to rotate, the first bevel gear 321 drives the second bevel gear 331 to rotate, the second bevel gear 331 drives the cam shaft 330 to rotate, the cam shaft 330 drives the eight-cycle cam piece 310 to rotate, and the eight-cycle cam piece 310 drives the opening arm 340 to move through the roller 341.
The transmission ratio of the driven wheel 200 to the driving wheel 100 is 3:4, the transmission ratio of the second bevel gear 331 to the first bevel gear 321 is 1:6, improvement can be performed on the original six-cycle conjugate cam mechanism, the original box body structure does not need to be changed, the transmission ratio of the driven wheel to the driving wheel is only changed into 3:4 by using the circulating gear of the original box body, namely the gear ratio of the driven wheel to the driving wheel is changed into 4:3, the transmission ratio of the output end to the input end can be 1:8, and the manufacturing cost is reduced.
It can be understood that the five-cycle conjugate cam mechanism can be improved, the transmission ratio of the second bevel gear to the first bevel gear is 1:5, and the transmission ratio of the driven wheel to the driving wheel is 5:8, so that the transmission ratio of the output end to the input end is 1: 8.
It can be understood that the four-cycle conjugate cam mechanism can be improved, the transmission ratio of the second bevel gear to the first bevel gear is 1:4, and the transmission ratio of the driven wheel to the driving wheel is 1:2, so that the transmission ratio of the output end to the input end is 1: 8.
The eight-cycle cam pieces 310 are provided in plural, the contour lines of the main cam pieces of the plural eight-cycle cam pieces are not completely the same, and the shape and arrangement order of the eight-cycle cam pieces are changed, so that different eight-cycle articles can be woven. In this embodiment, 8 eight-cycle cam pieces are provided to constitute an eight-cycle cam group.
It will be appreciated that the contour of the main cam lobe may be different for each eight-cycle cam lobe.
The utility model also discloses a loom, including eight circulation conjugate cam mechanism, eight circulation conjugate cam mechanism are eight circulation conjugate cam mechanism in arbitrary above-mentioned technical scheme, need not often to change eight circulation cam piece because of this eight circulation conjugate cam mechanism, long service life for the life of loom is longer, reduction in production cost.
The loom comprises an output shaft, a driving wheel is in transmission fit with the output shaft of the loom, and the output shaft rotates to drive the driving wheel to rotate.
Example two:
as shown in fig. 4, in the present embodiment, the contour line of the main cam piece 311 is composed of a loop segment, and the angles of the push segment, the far rest segment, the return segment, and the near rest segment are all 0 or a multiple of 45 °.
Specifically, the section a 'b' is a push-stroke section, the angle is 45 degrees, the section b 'c' is a far-rest section, the angle is 45 degrees, the section c'd' is a return-stroke section, the angle is 45 degrees, the section d 'a' is a near-rest section, the angle is 225 degrees, and the angle of the circulation section is 360 degrees.
It will be appreciated that the number of sections of the circulation section and the profile of the circulation section may be set as desired.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (10)
1. An eight-cycle cam piece comprises a main cam piece and an auxiliary cam piece and is characterized in that the contour line of the main cam piece at least comprises a section of cycle section, the cycle section sequentially comprises a push section, a far rest section, a return section and a near rest section, the push section and the return section are gradually changed curves, the near rest section and the far rest section are arc sections, the angle of each cycle section is a multiple of 45 degrees, and the sum of the angles of all the cycle sections on the contour line is 360 degrees.
2. The eight-cycle cam lobe of claim 1, wherein the angle of the push, distal, return and proximal rest segments is in the range of 0 ° -5 ° or in the range of ± 5 ° multiples of 45 °.
3. The eight-cycle cam plate of claim 1 wherein said gradual change curve is a simple harmonic motion curve or a cycloidal motion curve or a polynomial curve.
4. The eight-cycle cam plate of claim 1, wherein the contour line of said main cam plate is composed of a segment of a cycle; or the contour line of the main cam piece consists of three sections of circulation sections, and the angles of a push section, a far rest section, a return section and a near rest section in each section of circulation section are different.
5. An eight-cycle conjugate cam mechanism comprises a driving wheel, a driven wheel and a cam box, wherein the cam box comprises a box body, and a transmission shaft, a cam shaft, an eight-cycle cam piece and an open arm which are arranged in the box body, and the eight-cycle cam piece is the eight-cycle cam piece as claimed in any one of claims 1 to 4.
6. The eight-cycle conjugate cam mechanism of claim 5, wherein the driving wheel is connected to the driven wheel through a belt drive, one end of the transmission shaft is connected to the driven wheel through a belt drive, the other end of the transmission shaft is provided with a first bevel gear, the cam shaft is provided with a second bevel gear, the transmission shaft is perpendicular to the cam shaft and is in drive fit with the second bevel gear through the first bevel gear, the eight-cycle cam plate is sleeved on the cam shaft and rotates synchronously with the cam shaft, and the opening arm is in conjugate engagement with the eight-cycle cam plate.
7. The eight-cycle conjugate cam mechanism of claim 6, wherein the transmission ratio of the driven wheel to the driving wheel is 3:4, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 6; or the transmission ratio of the driven wheel to the driving wheel is 5:8, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 5; or the transmission ratio of the driven wheel to the driving wheel is 1:2, and the transmission ratio of the second bevel gear to the first bevel gear is 1: 4.
8. The eight-cycle conjugate cam mechanism of claim 5, wherein a plurality of the eight-cycle cam pieces are provided, and the contour line of the main cam piece in each eight-cycle cam piece is different; or, the eight-cycle cam piece is provided with a plurality of eight-cycle cam pieces, and the contour lines of the main cam pieces in the eight-cycle cam pieces are not completely the same.
9. The eight-cycle conjugate cam mechanism of claim 5, wherein the notched arm has two rollers, the primary cam lobe engaging one of the rollers and the secondary cam lobe engaging the other roller.
10. A weaving machine comprising an eight-cycle conjugate cam mechanism, characterized in that the eight-cycle conjugate cam mechanism is an eight-cycle conjugate cam mechanism according to any of claims 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663789.3U CN211284732U (en) | 2019-09-30 | 2019-09-30 | Eight-cycle cam sheet, eight-cycle conjugate cam mechanism and weaving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663789.3U CN211284732U (en) | 2019-09-30 | 2019-09-30 | Eight-cycle cam sheet, eight-cycle conjugate cam mechanism and weaving machine |
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| Publication Number | Publication Date |
|---|---|
| CN211284732U true CN211284732U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921663789.3U Active CN211284732U (en) | 2019-09-30 | 2019-09-30 | Eight-cycle cam sheet, eight-cycle conjugate cam mechanism and weaving machine |
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| Country | Link |
|---|---|
| CN (1) | CN211284732U (en) |
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2019
- 2019-09-30 CN CN201921663789.3U patent/CN211284732U/en active Active
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