CN110129931B - Top pressing mechanism for chemical fiber tow crimping machine - Google Patents
Top pressing mechanism for chemical fiber tow crimping machine Download PDFInfo
- Publication number
- CN110129931B CN110129931B CN201910513110.0A CN201910513110A CN110129931B CN 110129931 B CN110129931 B CN 110129931B CN 201910513110 A CN201910513110 A CN 201910513110A CN 110129931 B CN110129931 B CN 110129931B
- Authority
- CN
- China
- Prior art keywords
- tongue depressor
- ejector rod
- crimping
- rod
- jacking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002788 crimping Methods 0.000 title claims abstract description 78
- 239000000835 fiber Substances 0.000 title claims abstract description 25
- 239000000126 substance Substances 0.000 title claims abstract description 21
- 238000003825 pressing Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920006221 acetate fiber Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/10—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using knife edges, e.g. heated knife edges, for edge crimping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
A jacking mechanism for a chemical fiber crimping machine comprises a tongue depressor, a push rod and a push rod support, wherein the push rod is arranged on the topIn the rod bracket, the tongue depressor is positioned in the curling cavity, and the included angle between the tongue depressor and the lower plane of the curling cavity is a working inclination angle c; the central line of the ejector rod is vertical to the lower plane of the curling cavity, so that the pressure of the ejector rod is vertically acted on the tongue depressor. The working inclination angle c value of the tongue depressor is determined according to the following formula: c=15° -kx (total denier-17000), k= -0.20x10 ‑3 ～0.8x10 ‑3 . The mechanism enables the ejector rod to act on the plane of the tongue depressor vertically, the axial acting force of the ejector rod is the effective crimping acting force, and the crimping degree of the filament bundle is improved under the condition that the force is unchanged; in the case of a constant required curl, the force is reduced, reducing the work load of the cylinder. Meanwhile, the acting force in the plane direction of the tongue depressor is reduced or eliminated, the eccentricity caused by the acting force is reduced when the ejector rod works, the abrasion and heating between the ejector rod and the ejector rod support are reduced, and the service life of the ejector rod or the ejector rod support is prolonged.
Description
Technical Field
The invention relates to a jacking mechanism for a tongue depressor in a chemical fiber crimping machine, and belongs to the field of chemical fiber crimping machines.
Background
In the chemical fiber industry, a crimping machine is key equipment used in the chemical fiber crimping process of polyester staple fibers, polylactic acid fibers, acetate fibers and the like, and chemical fiber tows form crimping degree after passing through the crimping machine, so that the characteristics of bulk and the like are improved for the subsequent finishing of chemical fibers. The working principle of the presently used crimping machine is that, referring to fig. 1, a filament sheet with uniform thickness after being preheated by steam is fed into a crimping box through a pair of crimping rollers which are all actively rotated, an upper crimping cutter 2 and a lower crimping cutter 1 are arranged in the crimping box, the upper crimping cutter 2 is fixed on the crimping box through an upper crimping cutter mounting plate 10, a crimping cavity 7 through which a filament bundle passes is formed between the upper crimping cutter 2 and the lower crimping cutter 1, a tongue depressor 6 capable of swinging is arranged at the bottom of the upper crimping cutter 2 (one end of the tongue depressor 6 is provided with a rotating shaft, and the rotating shaft is inserted into an inner hole of the upper crimping cutter 2), and the tongue depressor 6 is arranged in the crimping cavity 7. When the tongue depressor 6 is pivoted to the lowermost position, a relatively fixed angle c, i.e. the working angle, is maintained with the lower plane 9 of the crimping cavity (i.e. the upper surface of the lower crimping blade 1), within which angle c the tongue depressor 6 is pivoted (the upper crimping blade 2 is provided with a stop for the tongue depressor 6). The fiber tows will lift the tongue depressor 6 as they pass under the tongue depressor 6, so a downward pressure is required to be applied to the tongue depressor 6. The tongue depressor 6 is pressed by a push rod 4 connected with a cylinder 5, and the push rod 4 is arranged in the push rod bracket 3 through a guide sleeve 8. During the crimping process of the filament bundle, the ejector rod 4 is pushed by the air cylinder 6 to provide pressure for the tongue depressor 6, so that the working inclination angle c DEG is kept between the tongue depressor 6 and the lower plane 9 of the crimping cavity, and the pressure is applied to the filament bundle when the filament bundle passes through the crimping cavity 7. The crimping rollers continuously feed the tow into the crimping chamber 7, and the crimped tow is continuously pushed out of the crimping box by the pushing force of the crimping rollers, as the tongue depressor 6 generates resistance to the movement of the tow, thereby crimping the fiber in the crimping chamber.
In the prior art, the mandrel 4 connected to the cylinder 5 is vertically mounted downward, and applies a vertical downward pressure to the tongue depressor 6 below the mandrel, while the tongue depressor 6 is not horizontal, but maintains a relatively fixed working inclination c° with the bottom surface of the curling chamber 7 (i.e. the upper surface of the lower curling blade 1), so that the effective pressure applied by the mandrel 4 to curl the tongue depressor 6 is cos (c°) times the mandrel axial pressure F generated by the cylinder 5, and the acting force parallel to the tongue depressor is sin (c°) times the mandrel axial pressure F generated by the cylinder.
Because the ejector rod 4 and the ejector rod support 3 are movable, the ejector rod 4 can move up and down in the ejector rod support 3 in a series manner during working, the action frequency is high, and the existence of acting force parallel to the tongue depressor 6 generates two kinds of harm to the ejector rod 4, namely, the ejector rod 4 is eccentric relative to a fixed hole of the ejector rod support 3; secondly, the ejector rod 4 heats, the abrasion degree of the ejector rod 4 and the bracket 3 thereof is increased, and the service life of the crimping machine is reduced.
Disclosure of Invention
The invention provides a jacking mechanism for a chemical fiber crimping machine, which aims at the problems of the existing tongue depressor jacking technology of the chemical fiber crimping machine, so as to eliminate the eccentricity of a crimping machine ejector rod and reduce the abrasion degree between the crimping machine ejector rod and a bracket thereof.
The invention relates to a jacking mechanism for a chemical fiber crimping machine, which adopts the following technical scheme:
the jacking mechanism comprises a tongue depressor, a push rod and a push rod support, wherein the push rod is arranged in the push rod support, the tongue depressor is positioned in a curling cavity, and an included angle between the tongue depressor and the lower plane of the curling cavity is a working inclination angle c; the central line of the ejector rod is vertical to the lower plane of the curling cavity, so that the pressure of the ejector rod is vertically acted on the tongue depressor.
The working inclination angle c value of the tongue depressor is determined according to the following formula: c=15° -K (total denier-17000)，K＝-0.20x10 -3 ～0.8x10 -3 (k=0.30±0.5 (unit 10) -3 °)。
When the tongue depressor is positioned at the working inclination angle c, the verticality deviation between the central line of the ejector rod and the tongue depressor is +/-1 degree.
The wire outlet end face of the tongue depressor is shorter than the wire outlet end face of the curling cavity by 4-5mm.
The invention also provides a crimping machine comprising the jacking mechanism.
The jacking mechanism sets the direction of the force of the ejector rod according to the working inclination of the tongue depressor of the chemical fiber crimping machine, so that the ejector rod arranged in the ejector rod bracket vertically acts on the tongue depressor. Thus, by changing the mode of the ejector rod support, the plane of the tongue depressor and the ejector rod are kept vertical, and the ejector pressure generated by the air cylinder driving the ejector rod acts on the tongue depressor vertically.
The invention makes the ejector rod act on the plane of the tongue depressor vertically, the axial acting force of the ejector rod is the effective crimping acting force, and the crimping degree of the filament bundle is improved under the condition that the force is unchanged; in the case of a constant required curl, the force is reduced, reducing the work load of the cylinder. Meanwhile, the acting force in the plane direction of the tongue depressor is reduced or eliminated, the eccentricity caused by the acting force is reduced when the ejector rod works, the abrasion and heating between the ejector rod and the ejector rod support are reduced, and the service life of the ejector rod or the ejector rod support is prolonged.
Drawings
Fig. 1 is a schematic diagram of the tow operation principle of a prior art crimping machine.
Fig. 2 is a schematic structural view of a pressing mechanism for a tongue depressor of a chemical fiber crimping machine according to the present invention.
In the figure: 1. a lower crimping knife; 2. a crimping knife is arranged; 3. a push rod bracket; 4. a push rod; 5. a cylinder; 6. tongue depressor, 7, crimping cavity, 8, guide sleeve, 9, crimping cavity lower plane, 10, upper crimping sword mounting panel.
Detailed Description
As shown in fig. 1, the jacking mechanism for the chemical fiber crimping machine of the invention is the same as the prior art in that the jacking mechanism also comprises a tongue depressor 6, a jacking rod 4 and a jacking rod support 3, wherein the jacking rod 4 is arranged in the jacking rod support 3 through a guide sleeve 8, and the jacking rod 4 can axially move in the jacking rod support 3. The tongue depressor 6 is in the crimping cavity 7.
The essential difference between the invention and the prior art is that the inner hole of the ejector rod bracket 3 for installing the ejector rod 4 is designed according to the working inclination angle c DEG of the tongue depressor 6 of the chemical fiber crimping machine, the central line of the ejector rod 4 installed in the inner hole is vertical to the lower plane 9 of the crimping cavity, so that the pressure of the ejector rod 4 vertically acts on the tongue depressor 6. The ejector rod support 3 is made of stainless steel or copper, and the ejector rod 4 is made of stainless steel or ceramic.
This allows the pressure of the cylinder 5 pushing the plunger 4 during the tow crimping process to act perpendicularly on the tongue depressor 6, maintaining a relatively fixed working angle c between the tongue depressor 6 and the lower plane 9 of the crimping cavity (i.e. the upper surface of the lower crimping blade 1). When the tongue depressor 6 is in the position of the working inclination angle c DEG, the verticality deviation between the central line of the ejector rod 4 and the tongue depressor 6 is +/-1 deg.
The working inclination c° of the tongue depressor 6 is determined according to the total denier required by the chemical fiber tow, c=15° when the chemical fiber filament Shu Zong denier is 17000denier, and the c value is determined according to the following formula when the total denier of the tow increases: c=15° -K (total denier-17000), k=0.30±0.5 (unit 10) -3 Degree). The formula is obtained through a large number of experiments, and through verification, the ejector rod 4 arranged according to the angle can accurately produce chemical fiber tows with required crimping degree by ejecting the tongue depressor 6.
Through a lot of experiments and actual production verification, along the wire outlet direction in the curling cavity 7, the wire outlet end of the tongue depressor 6 is shorter than the wire outlet end face of the curling cavity 7, and the distance A between the wire outlet end face of the tongue depressor 6 and the wire outlet end face of the curling cavity 7 is set to be 4-5mm, see fig. 2. Thus, the structure that the filament outlet end face of the tongue depressor 6 is aligned with the filament outlet end face of the crimping cavity 7 in the prior art is changed, the filament outlet speed can be effectively controlled, and the filament bundle corrugation of the primary crimping and the secondary crimping is consistent.
Example 1
The included angle between the central line of the ejector rod 4 and the vertical line of the lower plane 9 of the curling cavity is 15 degrees, and the device is used for curling filament bundles with 17000denier of acetate filaments Shu Zong, and in use, the tongue depressor 6 is perpendicular to the central line of the ejector rod 4, and under the technological requirement of keeping the curling degree unchanged, the pressure of the ejector rod 4 on the tongue depressor 6 is reduced from 150N to 145N.
Example 2
The included angle between the central line of the ejector rod 4 and the vertical line of the lower plane 9 of the crimping cavity is 9.6 degrees, so that the crimping effect is improved by using the crimping device for crimping the acetate filaments Shu Zong with the size of 35000 deniers, wherein in use, the tongue depressor 6 is perpendicular to the central line of the ejector rod 4, and compared with the prior art crimping machine shown in figure 1, the crimping effect of the tows can be improved by increasing the crimping rate from 240 g cm/cm to 252 g cm/cm under the technological requirement of maintaining the pressure of 200N unchanged.
In the embodiment using the ejector pin 4 perpendicular to the tongue depressor 6, the diameter wear reduction of the ejector pin 4 is reduced from 0.05 mm/year to 0.03 mm/year, and the ejector pin 4 replacement cycle is prolonged by 5 months.
Claims (2)
1. A jacking mechanism for a chemical fiber crimping machine comprises a tongue depressor, a push rod and a push rod support, wherein the push rod is arranged in the push rod support, the tongue depressor is positioned in a crimping cavity, and an included angle between the tongue depressor and the lower plane of the crimping cavity is a working inclination angle c; the method is characterized in that: the central line of the ejector rod is vertical to the lower plane of the curling cavity, so that the pressure of the ejector rod vertically acts on the tongue depressor;
the working inclination angle c value of the tongue depressor is determined according to the following formula: c=15° -K (total denier-17000), k= -0.20x10% -3 ～0.8x10 -3 ；
When the tongue depressor is positioned at the working inclination angle c, the verticality deviation between the central line of the ejector rod and the tongue depressor is +/-1 degree;
the filament outlet end face of the tongue depressor is shorter than the filament outlet end face of the curling cavity by 4-5mm;
the jacking mechanism sets the direction of the jacking force according to the working inclination of the tongue depressor of the chemical fiber crimping machine, so that the jacking rod arranged in the jacking rod support acts on the tongue depressor vertically, and the plane of the tongue depressor and the jacking rod are kept vertical by changing the mode of the jacking rod support, and the jacking force generated by the cylinder driving the jacking rod acts on the tongue depressor vertically.
2. A crimping machine comprising the jacking mechanism of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513110.0A CN110129931B (en) | 2019-06-12 | 2019-06-12 | Top pressing mechanism for chemical fiber tow crimping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513110.0A CN110129931B (en) | 2019-06-12 | 2019-06-12 | Top pressing mechanism for chemical fiber tow crimping machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110129931A CN110129931A (en) | 2019-08-16 |
| CN110129931B true CN110129931B (en) | 2024-03-12 |
Family
ID=67577176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910513110.0A Active CN110129931B (en) | 2019-06-12 | 2019-06-12 | Top pressing mechanism for chemical fiber tow crimping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110129931B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB870250A (en) * | 1959-04-01 | 1961-06-14 | Courtaulds Ltd | Improvements in and relating to stuffing boxes for crimping filaments and staple fibres |
| CN2663458Y (en) * | 2003-10-07 | 2004-12-15 | 南通醋酸纤维有限公司 | Filling box crimper compressor sheet |
| CN104328551A (en) * | 2014-09-23 | 2015-02-04 | 张家港市荣昌涤纶毛条有限公司 | Crimping machine |
| CN206941076U (en) * | 2017-05-04 | 2018-01-30 | 泰州市海仑化纤有限公司 | A kind of crimping machine for bending chopped fiber |
| CN210596414U (en) * | 2019-06-12 | 2020-05-22 | 济南大自然新材料有限公司 | Top pressing mechanism for chemical fiber tow crimping machine and crimping machine |
-
2019
- 2019-06-12 CN CN201910513110.0A patent/CN110129931B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB870250A (en) * | 1959-04-01 | 1961-06-14 | Courtaulds Ltd | Improvements in and relating to stuffing boxes for crimping filaments and staple fibres |
| CN2663458Y (en) * | 2003-10-07 | 2004-12-15 | 南通醋酸纤维有限公司 | Filling box crimper compressor sheet |
| CN104328551A (en) * | 2014-09-23 | 2015-02-04 | 张家港市荣昌涤纶毛条有限公司 | Crimping machine |
| CN206941076U (en) * | 2017-05-04 | 2018-01-30 | 泰州市海仑化纤有限公司 | A kind of crimping machine for bending chopped fiber |
| CN210596414U (en) * | 2019-06-12 | 2020-05-22 | 济南大自然新材料有限公司 | Top pressing mechanism for chemical fiber tow crimping machine and crimping machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110129931A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2016144822A (en) | Cutting device of wire | |
| KR101727992B1 (en) | Drawing unit and corresponding apparatus and method | |
| CN103331794A (en) | Continuous processing device for bamboo filament bundle | |
| US2914810A (en) | Crimping of textile fibres | |
| CN110129931B (en) | Top pressing mechanism for chemical fiber tow crimping machine | |
| CN106984857A (en) | A kind of fixed length cutting means | |
| CN211191726U (en) | Steel pipe flaring equipment | |
| CN210596414U (en) | Top pressing mechanism for chemical fiber tow crimping machine and crimping machine | |
| CN101457765B (en) | Metal axial-flow fan roller riveting and forming machine | |
| DE102007022272A1 (en) | A method of manufacturing a quartz glass tube by elongating a quartz glass hollow cylinder | |
| CN101565868B (en) | Apparatus for crimping chemical-fibres filaments and control methods thereof | |
| CN207057727U (en) | A kind of fixed length cutting means | |
| CN103085580B (en) | Sheet material breaking machine | |
| KR100706068B1 (en) | Spiral spring manufacture method and device | |
| JP4450970B2 (en) | Winding spring manufacturing equipment | |
| CN210596415U (en) | Crimping box in chemical fiber tow crimping machine and crimping machine | |
| CN104646583B (en) | Automatic oil pressure forming machinery | |
| CN205519405U (en) | Bouncing rod spring processing line | |
| CN203209328U (en) | Full-automatic workpiece straightness sorting and straightening machine | |
| CN206455035U (en) | Helical blade rolls system | |
| CN101934311A (en) | Hot bending machine | |
| CN113000725B (en) | Automatic straightening machine for steel wire | |
| CN102826741B (en) | Positioning device for curved glass moulding and preparation method of curved glass | |
| CN201214124Y (en) | Automatic feeder for puncher with improved structure | |
| CN203862893U (en) | Feeding and recovering device of punching machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |