CN100400736C - String-hooking mechanism for sewing machine - Google Patents
String-hooking mechanism for sewing machine Download PDFInfo
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- CN100400736C CN100400736C CNB021360847A CN02136084A CN100400736C CN 100400736 C CN100400736 C CN 100400736C CN B021360847 A CNB021360847 A CN B021360847A CN 02136084 A CN02136084 A CN 02136084A CN 100400736 C CN100400736 C CN 100400736C
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- looper
- crank
- transmission mechanism
- main shaft
- collude
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Abstract
The present invention provides a thread-hooking mechanism for a sewing machine, which is composed of a transmission mechanism and a thread-hooking execution mechanism, wherein the transmission mechanism is composed of a casing (1), a main axis (2), a slider (3) installed on a crank, a wobbly guide rod (4), a connecting rod (5), a swinging rod (6), swinging rod shaft (7) and other main components. When the transmission mechanism drives the thread-hooking execution mechanism to do thread-hooking work after technical innovation, the stroke speed can be accelerated, the cross-needle width can be increased by 40%, and the sewing machine for knitting bags can maintain normal work even if the needle bar stroke is reduced by 12mm (the needle bar stroke is reduced from 57mm to 45mm), thereby improving the combination properties of the sewing machine.
Description
The present invention relates to make the line transmission mechanism that colludes of 300 class stitchings and 400 class chain stitch sewing machines.
Making 300 class stitchings and 400 class chain stitch sewing machines at present in the world mainly is made up of four great institutions such as thorn material lead wires mechanism, string-hooking mechanism, thread take-up mechanism and feed mechanisms.Sewing machines will be finished the process of a stitching, is mainly expected the eedle of lead wires mechanism by thorn, the shuttle of string-hooking mechanism or looper, and four critical parts such as the feeding tooth of the thread take-up tension lever of thread take-up mechanism and feed mechanism are finished in certain sequence.The string-hooking mechanism of prior art is formed by colluding line transmission mechanism and colluding line executing agency.Colluding line transmission mechanism is made up of with connecting rod and rocking bar hinge the crank on the main shaft (bent axle) (or the eccentric wheel on the main shaft).Main shaft rotates a circle (360 °), and crank drive link and rocking bar are made a back and forth movement on the main shaft.Oneself has the lineman that colludes of the string-hooking mechanism (300 class stitching) of the multifunctional sewing machine of technology to make stroke, its spindle crank rotational angle θ
1Be 181 °, the spindle crank rotational angle θ of backstroke
2It is 179 °.Because oneself has the line transmission mechanism that colludes of technology to limit, the eedles width maximum of multifunctional sewing machine is at 5mm, and most of kinds will surpass the 5mm width with cisco unity malfunction at 4--4.5mm.Oneself has the lineman that colludes of the woven bag Sewing machines (400 class stitching) of technology to make stroke, its spindle crank rotational angle θ
1Be 180 °, the spindle crank rotational angle θ of backstroke
2It is 180 °.Because oneself has the line transmission mechanism qualification of colluding of technology to make woven bag sewing machine needle bar stroke at 57mm, can't reduce needle bar stroke by a relatively large margin.
The purpose of this invention is to provide a kind of line transmission mechanism that colludes.In the Sewing machines of making 300 class stitchings (shuttle), it can make shuttle collude the lineman and do the travel speed quickening and shift to an earlier date the take-up time, therefore can make the eedles width of multifunctional sewing machine on original specification, can enlarge about 40%, after the eedles width enlarged, the tortuous linear slit of the various styles of sewing, straight shape linear slit can both operate as normal and the effect of reduction pin (face) line tension are arranged; In the Sewing machines of making 400 class stitchings (looper), it can make looper collude the lineman and do the travel speed quickening, can operate as normal to needle bar stroke (reducing to 45mm from 57mm) the minimizing 12mm of woven bag Sewing machines (looper, 400 class stitchings).
The object of the present invention is achieved like this: the string-hooking mechanism of Sewing machines is formed by colluding line transmission mechanism and colluding line executing agency.Carry out technological innovation colluding line transmission mechanism, the speed of working stroke of colluding line is accelerated.Slideway and slide block (3) slip of loading onto slide block (3) [also can not adorn slide block on than the Sewing machines of low speed] pendulum guide rod (4) on the crank (bent axle or eccentric wheel) of main shaft (2) match, [when not adorning slide block, the crank (bent axle or eccentric wheel) of the slideway of pendulum guide rod (4) and main shaft (2) slides and matches.] fulcrum shaft of pendulum guide rod (4) is in the axis hole position of casing (1).The crank of main shaft (2), slide block (3) pendulum guide rod (4) are formed a crank guide rod mechanism like this; Rocking bar (6) is fixed on the rocker shaft (7), and rocker shaft (7) is installed in the axis hole position of casing (1).Load onto connecting rod (5) composition in the B axis hole position of pendulum guide rod (4) and in the C axis hole position of rocking bar (6) and collude line transmission mechanism.Become the line transmission mechanism that colludes of the present invention.' O ' is the center of rotation of the crank of main shaft (2) in Fig. 5, ' O
2' be the fulcrum shaft of pendulum guide rod (4) in casing (1) axis hole position, the slipway location A of the crank of main shaft (2), slide block (3) and pendulum guide rod (4)
1The place colludes the lineman to do on the starting point of travel position, and the crank of main shaft (2) turns to A
2Being to collude the lineman to finish a little as stroke during the position, also is to collude line backstroke starting point, (in the Sewing machines of shuttle, 300 class stitchings, when colluding the line backstroke and beginning in a flash, needlework must pull out at the shuttle afterbody.) turn to A again
1During the position, collude the line backstroke and finish, become work period of Sewing machines.The angle of oscillation ψ of pendulum guide rod among the figure (4), after the crank size of main shaft (2) is determined, ' OO
2' distance big, angle of oscillation ψ is little, ' OO
2' distance " little then angle of oscillation ψ is big.Collude the lineman and make stroke θ
1=180 °-ψ (ψ=θ) colludes line backstroke θ
2=180 °+ψ (ψ=θ).Collude lineal travel variation coefficient K=θ
1/ θ
2=180 °+ψ/180 °-ψ comes comparative illustration with the above-mentioned lineal travel variation coefficient K that colludes: oneself has the multifunctional sewing machine of technology to collude lineal travel variation coefficient K=θ
2/ θ
1=179 °/181 °=0.989 oneself have the woven bag Sewing machines of technology to collude lineal travel variation coefficient K=θ
2/ θ
1=180 °/180 °=1 lineal travel variation coefficient K=θ that colludes of the present invention
1/ θ
2=180 °+ψ/180 °-ψ=180 °+34 °/180 °-34 °=214 °/146 °=1.466 (establish ψ=34 ° also can establish other angle number)
Find out that from above-mentioned contrast of colluding lineal travel variation coefficient K the present invention has reached and accelerated to collude the purpose that the lineman makes travel speed.
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the string-hooking mechanism scheme of maneuver of the multifunctional sewing machine of prior art.
Fig. 2 colludes the line transmission mechanism scheme of maneuver among Fig. 1.
Fig. 3 colludes the line transmission mechanism scheme of maneuver among Fig. 1.
Fig. 4 is the string-hooking mechanism scheme of maneuver of the multifunctional sewing machine of first embodiment of the present invention.
Fig. 5 colludes the line transmission mechanism scheme of maneuver among Fig. 4.
Fig. 6 colludes the line transmission mechanism scheme of maneuver among Fig. 4.
Fig. 7 is the scheme of maneuver of the string-hooking mechanism of oneself woven bag Sewing machines that technology is arranged.
Fig. 8 is the scheme of maneuver of the string-hooking mechanism of second embodiment woven bag Sewing machines of the present invention.
Fig. 9 is the string-hooking mechanism component diagram of woven bag Sewing machines of the present invention.
Figure 10 is the A--A view of Fig. 9.
1. casings, 2. main shafts, 3. slide blocks, 4. pendulum guide rods, 5. connecting rods, 6. rocking bars, 7. rocker shafts, 8. Fan shape umbrella gears, 9. bevel gears, 10. shuttle holder axles, 11. shuttle holders, 12. shuttles, 13. shuttle races, 14. looper outside cranks, 15. looper small rods, 16. looper framves, 17. loopers, the 18. looper frame axis of cone, 19. looper frame axles, 20. looper frame axle rocking bars, 21. looper connecting rods, 22. looper eccentric wheels among the figure
Fig. 1 is the string-hooking mechanism scheme of maneuver of the multifunctional sewing machine of prior art, and string-hooking mechanism is by colluding line transmission mechanism and colluding Line executing agency combines. Colluding line transmission mechanism is by casing (1), the crank of main shaft (2) and connecting rod (5) and rocking bar (6) comprise the crank and rocker mechanism that rocker shaft (7) forms, in this string-hooking mechanism, be called and collude line transmission mechanism. Colluding line carries out Mechanism is by Fan shape umbrella gear (8) bevel gear (9) shuttle holder axle (10) shuttle holder (11) shuttle (12) and shuttle race (13) etc. Main parts size combines. Among Fig. 1, collude line transmission mechanism and be installed in the casing (1) connecting rod (5) by main shaft (2) With crank (bent axle) and rocking bar (6) hinge of main shaft (2), rocking bar (6) is fixed on the rocker shaft (7), rocker shaft (7) Be installed in the axis hole position of mechanism (1), collude line executing agency and be fixed on the rocker shaft (7) the umbrella tooth by Fan shape umbrella gear (8) Wheel (9) is fixed on the shuttle holder axle (10), and shuttle holder axle (10) is installed in the axis hole position of casing (1), the Fan shape umbrella tooth Wheel (8) is made reciprocating rotation with bevel gear (9) engagement, and shuttle holder (11) is fixed on the shuttle holder axle (10), shuttle (12) Be installed in the shuttle race (13), shuttle race (13) is fixed on the casing (1), and shuttle holder (11) drives shuttle (12) at shuttle race (13) reciprocating rotation in.
Fig. 2 colludes the line transmission mechanism scheme of maneuver among Fig. 1. OA among the figure1For the crank of main shaft (2) forwards on the lower extremely difficult some OA to2For the crank of main shaft (2) forwards on the limes superiors point. Collude the line working line and be the crank of main shaft (2) from OA1Forward OA to2, its rotational angle is 181 °, θ1Be to collude the lineman to make stroke: the crank of main shaft (2) is from OA2Forward OA to1Its rotational angle is 179 °, θ2To collude the line backstroke.
Fig. 3 colludes the line transmission mechanism scheme of maneuver among Fig. 1, is the situation of crank on limit inferior point of main shaft (2) among the figure.
Fig. 4 is the string-hooking mechanism scheme of maneuver of the multifunctional sewing machine of an embodiment of the mat woven of fine bamboo strips of the present invention.String-hooking mechanism combines by colluding line transmission mechanism and colluding line executing agency.Collude line transmission mechanism and comprise that by the crank of casing (1) main shaft (2) and slide block (3) pendulum guide rod (4) connecting rod (5) and rocking bar (6) rocker shaft main parts size such as (7) forms the pendulum guide rod endplay device.In this string-hooking mechanism, be called and collude line transmission mechanism.Collude that line executing agency combines by Fan shape umbrella gear (8) bevel gear (9) shuttle holder axle (10) shuttle holder (11) shuttle (12) and shuttle race main parts size such as (13).Colluding line transmission mechanism among the figure is installed in the casing (1) by main shaft (2), the fulcrum shaft of pendulum guide rod (4) is in the axis hole position of casing (1), crank (bent axle or eccentric wheel) on the slideway of pendulum guide rod (4) and the main shaft (2) matches with slide block (3), the crank of main shaft (2) is (on bent axle or the eccentric wheel, one end and the connecting rod hinge of slide block (3) [can not adorn slide block on than the Sewing machines of low speed] pendulum guide rod (4) can be housed, the other end of connecting rod (5) and rocking bar (6) hinge, rocking bar (6) is fixed on the rocker shaft (7), and rocker shaft (7) is installed in the axis hole position of mechanism (1).Colluding line executing agency is fixed on the rocker shaft (7) by Fan shape umbrella gear (8), bevel gear (9) is fixed on the shuttle holder axle (10), shuttle holder axle (10) is installed in the axis hole position of casing (1), Fan shape umbrella gear (8) is done back and forth to rotate with bevel gear (9) engagement, shuttle holder (11) is fixed on the shuttle holder axle (10), shuttle (12) is installed in the shuttle race (13), and shuttle race (13) is fixed on the casing (1), and shuttle holder (11) drives shuttle (12) and back and forth rotates in shuttle race (13).
Fig. 5 colludes the line transmission mechanism scheme of maneuver among Fig. 4.OA among the figure
1Be the following extremely difficult point of the crank of main shaft (2), OA
2It is the limes superiors point of the crank of main shaft (2).The crank of main shaft (2) is from OA
1Forward OA to
2, rotational angle θ
1=180 °-ψ θ
1Be to collude the lineman to make stroke; OA
2Forward OA to
1, rotational angle θ
2=180 °+ψ θ
2Be to collude the line backstroke.Collude lineal travel variation coefficient K=θ
2/ θ
1=180 °+ψ/180 °-ψ establish ψ=40 ° K=180 °+40 °/180 °-40 °=220 °/140 °=1.571 oneself the multifunctional sewing machine K=θ of technology is arranged
2/ θ
1=179 °/181 °=0.989 oneself have the eedles width of the multifunctional sewing machine of technology to fix on 5mm in 4--4.5mm, maximum, surpass 5mm and abnormal situation such as bouncing pilotage takes place easily occur, its main cause is that the shuttle of string-hooking mechanism colludes the lineman and makes the fast inadequately reason of travel speed.Of the present inventionly collude line transmission mechanism it can make shuttle collude that the lineman does that travel speed is accelerated and take-up time in advance, therefore can make the eedles width of multifunctional sewing machine on original specification, can enlarge about 40%, after the eedles width enlarged, the tortuous linear slit of the various styles of sewing, straight shape linear slit can both operate as normal and the effect of reduction pin (face) line tension are arranged.
Fig. 6 colludes the line transmission mechanism scheme of maneuver among Fig. 4, is the situation of crank on limit inferior point of main shaft (2) among the figure.
Fig. 7 is the string-hooking mechanism scheme of maneuver that oneself has the woven bag Sewing machines of technology.String-hooking mechanism combines by colluding line transmission mechanism and colluding line executing agency.The crank (spherical) that colludes line transmission mechanism and be casing (1) main shaft (2) and connecting rod (5) and rocking bar (6) comprise that rocker shaft (7) forms crank rocker (space) mechanism, are called in this string-hooking mechanism and collude line transmission mechanism.Collude that line executing agency combines by looper outside crank (14) looper small rod (15) looper frame (16) looper (17) the looper frame axis of cone (18) looper frame axle (19) looper frame axle rocking bar (20) looper connecting rod (21) and looper eccentric wheel main parts size such as (22).The line transmission mechanism that colludes among the figure is installed in the axis hole position of casing (1) by main shaft (2), one end of connecting rod (5) is connected with crank (spherical) live ball of main shaft (2), the other end of connecting rod (5) is connected with rocking bar (6) live ball, rocking bar (6) is fixed on the rocker shaft (7), and rocker shaft (7) is installed in the axis hole position of casing (1); Colluding line executing agency is fixed on the rocker shaft (7) by looper outside crank (14), looper outside crank (14) is connected with looper small rod (15) live ball, looper small rod (15) other end is connected with looper frame (16) live ball, looper frame (16) and the looper frame axis of cone (18) hinge, the looper frame axis of cone (18) is fixed on the spindle nose position of looper frame axle (19), looper frame axle (19) is installed in the axis hole position of casing (1), install and fix looper frame axle rocking bar (20) in the middle of the axle of looper frame axle (17), looper eccentric wheel (22) is installed on the main shaft (2), looper connecting rod (21) and looper eccentric wheel (22) and looper frame axle rocking bar (20) hinge, looper (17) is fixed on the looper frame (18).
Fig. 8 is the string-hooking mechanism scheme of maneuver of woven bag Sewing machines of second embodiment of the present invention and the string-hooking mechanism component diagram that Fig. 9 is woven bag Sewing machines of the present invention.String-hooking mechanism combines by colluding line transmission mechanism and colluding line executing agency.In Fig. 8 and Fig. 9, collude line transmission mechanism and comprise that by crank (axis body is cylindrical) slide block (3) pendulum guide rod (4) connecting rod (5) of casing (1) main shaft (2) and rocking bar (6) rocker shaft (7) forms the pendulum guide rod endplay device, in this string-hooking mechanism, be called and collude line transmission mechanism.Collude that line executing agency combines by looper outside crank (14) looper small rod (15) looper frame (16) looper (17) the looper frame axis of cone (18) looper frame axle (19) looper frame axle rocking bar (20) looper connecting rod (21) and looper eccentric wheel main parts size such as (22).(2 are installed in the axis hole position of casing (1) the line transmission mechanism that colludes among Fig. 8 and Fig. 9 by main shaft, the crank (axle) of main shaft (2) is gone up a cover slide block (3), the slide block (3) of the fulcrum shaft of pendulum guide rod (4) in the axis hole position of casing (1), on the bent axle (axle) of the slideway of pendulum guide rod (4) and main shaft (2) slides and matches, connecting rod (5) is connected with rocking bar (6) live ball with pendulum guide rod (4) or the cross pivot pin connects, rocking bar (6) is fixed on the rocker shaft (7), and rocker shaft (7) is installed in the axis hole position of casing (1).Colluding line executing agency is fixed on the rocker shaft (7) by looper outside crank (14), looper outside crank (14) is connected with looper small rod (15) live ball, looper small rod (15) other end is connected with looper frame (18) live ball, looper frame (16) and the looper frame axis of cone (18) hinge, the looper frame axis of cone (18) is fixed on the spindle nose position of looper frame (19), looper frame axle (19) is installed in the axis hole position of casing (1), installing and fixing looper frame axle rocking bar (20) looper eccentric wheel (22) in the middle of the axle of looper frame axle (19) is installed on the main shaft (2), looper connecting rod (21) and looper eccentric wheel (22) and looper frame axle rocking bar (20) hinge, looper (17) is fixed on the looper frame (18).
Figure 10 is the A--A view of Fig. 9.It among the figure line transmission mechanism that colludes in the string-hooking mechanism, collude line transmission mechanism and be in the slideway that is with slide block (3) and pendulum guide rod (4) on the crank (axle) by main shaft (2) and slide, the fulcrum O2 of pendulum guide rod (4) is in casing (1), connecting rod (5) uses cross pivot pin (or live ball) to connect the B of pendulum guide rod (4) and the C of rocking bar (6) respectively, rocking bar (6) is fixed on the rocker shaft (7), and rocker shaft (7) is installed in the axis hole position of casing (1).What rocker shaft (7) other end connected 400 stitchings colludes line executing agency.O is the center of rotation of the crank of main shaft (2) among the figure, OA
1Be the limit inferior point of the crank of main shaft (2), OA
2Be extremely difficult point on main shaft (2) crank.Colluding the lineman is that the crank of main shaft (2) is from OA as stroke
1Forward OA to
2Rotational angle θ
1=180 °-ψ=146 ° θ
1Be to collude the lineman to make stroke; The crank of main shaft (2) is from OA
2Forward OA to
1Rotational angle θ
2=180 °+ψ=214 ° θ
2Be to collude the line backstroke.(this machine design data decide ψ=34 °) lineal travel variation coefficient K=θ that colludes of the present invention
2/ θ
1The woven bag Sewing machines of=214 °/146 °=1.466 prior arts colludes lineal travel variation coefficient K=θ
2/ θ
1=180 °/180 °=1 colludes lineal travel variation coefficient contrast from above-mentioned, and the present invention has the lineman that colludes of technology to make the stroke variation coefficient and compare with oneself, and fast 0.466.The woven bag Sewing machines adopt of the present invention collude line transmission mechanism after, since collude the lineman do travel speed fast, the needle bar stroke that makes thorn material lead wires mechanism narrows down to after 45mm reduces 12mm from intrinsic 57mm, can meet the requirement that cooperatively interacts of each mechanism of Sewing machines.Except above-mentioned two embodiment, can also work out without departing from the spirit and scope of the present invention and of the present inventionly collude that line transmission mechanism colludes the string-hooking mechanism of the 300 class stitchings that line executing agency forms with other or the string-hooking mechanism of 400 class stitchings matches, form the embodiment of various uses Sewing machines with other mechanism.
Above-mentioned 300 classes, 400 class stitchings meet the stitching pattern of GB4514-84 " classification of stitching and term " regulation.
Claims (1)
1. make 300 classes and 400 class stitchings a kind of use in sewing machine collude line transmission mechanism, it is characterized in that loading onto slide block (3) on the crank of main shaft (2), the slideway of pendulum guide rod (4) and slide block (3) slide and match, the fulcrum shaft of main shaft (2) and pendulum guide rod is installed in respectively in the axis hole position of casing (1), in the B axis hole position of pendulum guide rod (4) and connecting rod (5) hinge, the C axis hole position hinge of connecting rod (5) other end and rocking bar (6), rocking bar (6) is fixed on the rocker shaft (7), rocker shaft (7) is installed in the axis hole position of casing (1), and what rocker shaft (7) other end connected 300 classes or 400 classes colludes line executing agency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021360847A CN100400736C (en) | 2002-07-18 | 2002-07-18 | String-hooking mechanism for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021360847A CN100400736C (en) | 2002-07-18 | 2002-07-18 | String-hooking mechanism for sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1468999A CN1468999A (en) | 2004-01-21 |
| CN100400736C true CN100400736C (en) | 2008-07-09 |
Family
ID=34146309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021360847A Expired - Fee Related CN100400736C (en) | 2002-07-18 | 2002-07-18 | String-hooking mechanism for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100400736C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251356B (en) * | 2011-07-28 | 2013-04-03 | 中屹机械工业有限公司 | Cloth-needling thread-hooking device of sewing machine |
| CN104695140A (en) * | 2015-04-03 | 2015-06-10 | 周磊 | Sewing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042962C (en) * | 1994-03-29 | 1999-04-14 | 重机公司 | Drive force transmission for a shuttle section in a sewing machine |
| CN1043583C (en) * | 1993-12-18 | 1999-06-09 | 联合特别有限公司 | Looper drive for a chainstitch sewing machine |
-
2002
- 2002-07-18 CN CNB021360847A patent/CN100400736C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043583C (en) * | 1993-12-18 | 1999-06-09 | 联合特别有限公司 | Looper drive for a chainstitch sewing machine |
| CN1042962C (en) * | 1994-03-29 | 1999-04-14 | 重机公司 | Drive force transmission for a shuttle section in a sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1468999A (en) | 2004-01-21 |
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Granted publication date: 20080709 Termination date: 20100718 |