CN1468999A - String-hooking mechanism for sewing machine - Google Patents
String-hooking mechanism for sewing machine Download PDFInfo
- Publication number
- CN1468999A CN1468999A CNA021360847A CN02136084A CN1468999A CN 1468999 A CN1468999 A CN 1468999A CN A021360847 A CNA021360847 A CN A021360847A CN 02136084 A CN02136084 A CN 02136084A CN 1468999 A CN1468999 A CN 1468999A
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- Prior art keywords
- crank
- looper
- main shaft
- string
- hooking
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Abstract
The thread-hooking mechanism for sewing machine consists of driving mechanism and thread-hooking executing mechanism. The driving mechanism consists of casing, main shaft, crank, sliding block, oscillating guide rod, link rod, rocking bar, rocking bar shaft and other main parts. The improved driving mechanism drives the thread-hooking executing mechanism, and the present invention has short thread-hooking stroke. The present invention makes it possible to expand the horizontal stitch width of multifunctional sewing machine by 40 %, to reduce the needle rod stroke of bag-weaving sewing machine by 12 mm and to raise the comprehensive level of sewing machines.
Description
The present invention relates to make the string-hooking mechanism 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 by transmission mechanism and collude line executing agency and form.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.The lineman that colludes of the string-hooking mechanism of the multifunctional sewing machine of prior art (300 class stitching) makes stroke, its spindle crank rotational angle θ
1Be 181 °, the spindle crank rotational angle θ of backstroke
2It is 179 °.Because the string-hooking mechanism of prior art limits, 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.The lineman that colludes of the woven bag Sewing machines of prior art (400 class stitching) makes stroke, its spindle crank rotational angle θ
1Be 180 °, the spindle crank rotational angle θ of backstroke
2It is 180 °.Make woven bag sewing machine needle bar stroke at 57mm because the string-hooking mechanism of prior art limits, can't reduce needle bar stroke by a relatively large margin.
The purpose of this invention is to provide a kind of string-hooking mechanism, it can make colludes the lineman and makes travel speed and accelerate, therefore can make multifunctional sewing machine (shuttle, 300 class stitchings) eedles width can enlarge 40% on original specification: the needle bar stroke (reducing to 45mm from 57mm) to woven bag Sewing machines (looper, 400 class stitchings) reduces 12mm energy operate as normal.
The object of the present invention is achieved like this: the string-hooking mechanism of Sewing machines is by transmission mechanism and collude line executing agency and form.Transmission mechanism is carried out technological innovation, the speed of working stroke of colluding line is accelerated.Match at the slideway of loading onto slide block (3) [on than the Sewing machines of low speed, also can not adorn slide block] pendulum guide rod (4) on the crank (axle) of main shaft (2) and slide block (3) slip, [when not adorning slide block, the slideway of pendulum guide rod (4) and main shaft (2) crank (axle) slide and match.] 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) in the B axis hole position of pendulum guide rod (4) and in the C axis hole position of rocking bar (6) and form transmission mechanism.Transmission mechanism and collude line executing agency and fuse becomes string-hooking mechanism of the present invention.' O ' is the center of rotation of main shaft (2) crank in Fig. 5, ' O
2' be the fulcrum shaft of pendulum guide rod (4) in the axis hole position of casing (1), the slipway location A of main shaft (2) crank, slide block (3) and pendulum guide rod (4)
1The place colludes the lineman to do on the starting point of travel position, and main shaft (2) crank 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, turns 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 main shaft (2) crank size is determined, ' OO
2' distance big, angle of oscillation ψ is little, ' OO
2' the little then angle of oscillation of distance ψ 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:
The multifunctional sewing machine of prior art colludes lineal travel variation coefficient K=θ
2/ θ
1=179 °/181 °=0.989
The woven bag Sewing machines of prior art colludes lineal travel variation coefficient K=θ
2/ θ
1=180 °/180 °=1
The lineal travel variation coefficient K=θ that colludes of the present invention
2/ θ
1=180 °+ψ/180 °-ψ=180 °+34 °
/ 180 °-34 °=214 °/146 °=1.466 (establish ψ=34 °)
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 stroke.
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 is the transmission mechanism scheme of maneuver among Fig. 1.
Fig. 3 is the 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 is a transmission mechanism scheme of maneuver among Fig. 4.
Fig. 6 is a transmission mechanism scheme of maneuver among Fig. 4.
Fig. 7 is the scheme of maneuver of string-hooking mechanism of the woven bag Sewing machines of prior art.
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 transmission mechanism and collude line executing agency and combine.Transmission mechanism is gone up crank by casing (1) main shaft (2) and is comprised the crank and rocker mechanism that rocker shaft (7) is formed with connecting rod (5) and rocking bar (6), is called transmission mechanism in this string-hooking 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).Among Fig. 1, transmission mechanism is installed in the casing (1) by main shaft (2), the crank (bent axle) and rocking bar (6) hinge of connecting rod (5) and main shaft (2), rocking bar (6) is fixed on the rocker shaft (7), 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 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. 2 is the transmission mechanism scheme of maneuver among Fig. 1.OA among the figure
1For main shaft (2) crank forwards on the limit inferior point OA to
2For main shaft (2) crank forwards on the limes superiors point.Colluding the lineman is that main shaft (2) crank is from OA as stroke
1Forward OA to
2, its rotational angle θ
1Be 181 °, θ
1Be to collude the lineman to make stroke; Main shaft (2) crank is from OA
2Forward OA to
1Its rotational angle θ
2Be 179 °, θ
2Be to collude the line backstroke.
Fig. 3 is the transmission mechanism scheme of maneuver of Fig. 1, is the situation of main shaft (2) crank on limit inferior point among the figure.
Fig. 4 is the string-hooking mechanism scheme of maneuver of multifunctional sewing machine of the present invention.String-hooking mechanism is by transmission mechanism and colludes line executing agency and combine.Transmission mechanism comprises 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 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).Transmission mechanism is installed in the casing (1) by main shaft (2) among the figure, the fulcrum shaft of pendulum guide rod (4) is in the axis hole position of casing (1), crank (axle) on the slideway of pendulum guide rod (4) and the main shaft (2) matches with slide block (3), 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 on the crank (axle) of main shaft (2), 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 casing (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 is a transmission mechanism scheme of maneuver among Fig. 4.OA among the figure
1Be the limit inferior point of main shaft (2) crank, OA
2It is the limes superiors point of main shaft (2) crank.Main shaft (2) crank 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 establishes the multifunctional sewing machine K=θ of ψ=34 ° K=180 °+34 °/180 °-34 °=214 °/146 °=1.466 prior arts
2/ θ
1The eedles width of the multifunctional sewing machine of=179 °/181 °=0.989 prior art fixes on 5mm in the 4-4.5mm maximum, surpass 5mm abnormal situation appearance such as bouncing pilotage take place easily, its main cause is that the shuttle that colludes line executing agency of string-hooking mechanism colludes the slow reason of linear velocity.After string-hooking mechanism of the present invention has been accelerated to collude the lineman and has been made stroke, enlarged the eedles width after, still keep the needed working condition of original eedle.
Fig. 6 is the transmission mechanism scheme of maneuver of Fig. 4, is the situation of main shaft (2) crank on limit inferior point among the figure.
Fig. 7 is the string-hooking mechanism scheme of maneuver of the woven bag Sewing machines of prior art.String-hooking mechanism is by transmission mechanism and collude line executing agency and combine.Transmission mechanism comprises that by the crank (spherical) of casing (1) main shaft (2) and connecting rod (5) and rocking bar (6) rocker shaft (7) forms crank rocker (space) mechanism, is called transmission mechanism in this string-hooking 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).Transmission mechanism 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 bent axle (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 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 is by transmission mechanism and collude line executing agency and combine.Transmission mechanism comprises 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 Fig. 8 and Fig. 9, is called transmission mechanism in this string-hooking 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).Transmission mechanism among Fig. 8 and Fig. 9 is installed in the axis hole position of casing (1) by main shaft (2), the crank (axle) of main shaft (2) is gone up a cover slide block (3), the fulcrum shaft of pendulum guide rod (4) in the axis hole position of casing (1), the slideway of pendulum guide rod (4) and the slide block (3) on main shaft (2) crank (axle) slide and match, 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 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 (19), 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).
Figure 10 is the A-A view of Fig. 9.It among the figure transmission mechanism in the string-hooking mechanism, transmission mechanism is by sliding in the slideway that is with slide block (3) and pendulum guide rod (4) on main shaft (2) crank (axle), 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 main shaft (2) crank among the figure, OA
1Be the limit inferior point of main shaft (2) crank, OA
2Limes superiors point for main shaft (2) crank.Colluding the lineman is that main shaft (2) crank is from OA as stroke
1Forward OA to
2Rotational angle θ
1=180 °-ψ=146 ° θ
1Be to collude the lineman to make stroke; Main shaft (2) crank 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, the present invention compares as stroke with the lineman that colludes of prior art, after fast 0.466 woven bag Sewing machines adopts string-hooking mechanism of the present invention, since collude the lineman do stroke 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.
Claims (1)
1. make the string-hooking mechanism of a kind of use in sewing machine of 300 classes and 400 class stitchings, by transmission mechanism with collude line executing agency and form, it is characterized in that loading onto on transmission mechanism main shaft (2) crank (axle) slide block (3) [on than the Sewing machines of low speed, also can not adorn slide block], the slideway of pendulum guide rod (4) and slide block (3) slide and match, [when not adorning slide block, the slideway of pendulum guide rod (4) and main shaft (2) crank (axle) slide and match] fulcrum shaft of main shaft (2) and pendulum guide rod is installed in respectively in the axis hole position of casing (1), in the position, B hole 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 true CN1468999A (en) | 2004-01-21 |
| CN100400736C 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251356A (en) * | 2011-07-28 | 2011-11-23 | 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343421C1 (en) * | 1993-12-18 | 1995-02-09 | Union Special Gmbh | Gripper drive for a chain-stitch sewing machine |
| JP2825431B2 (en) * | 1994-03-29 | 1998-11-18 | ジューキ株式会社 | Drive transmission device for the shuttle part of the sewing machine |
-
2002
- 2002-07-18 CN CNB021360847A patent/CN100400736C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251356A (en) * | 2011-07-28 | 2011-11-23 | 中屹机械工业有限公司 | Cloth-needling thread-hooking device of sewing machine |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100400736C (en) | 2008-07-09 |
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Granted publication date: 20080709 Termination date: 20100718 |