CN103726241A - Trimming mechanism of pillar needle feeding sewing machine - Google Patents
Trimming mechanism of pillar needle feeding sewing machine Download PDFInfo
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- CN103726241A CN103726241A CN201310734120.XA CN201310734120A CN103726241A CN 103726241 A CN103726241 A CN 103726241A CN 201310734120 A CN201310734120 A CN 201310734120A CN 103726241 A CN103726241 A CN 103726241A
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- slide block
- fork
- sewing machine
- chute
- cutting blade
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Abstract
The invention relates to sewing machines, in particular to a trimming mechanism of a pillar needle feeding sewing machine. The trimming mechanism comprises a movable blade, a connecting rod, a trimming cam and a fixed blade, wherein the connecting rod is used for driving the movable blade, the trimming cam is used for driving the connecting rod, and the fixed blade is matched with the movable blade. By the application of the trimming mechanism, the problem that an existing pillar needle feeding sewing machine cannot trim thread automatically is solved.
Description
Technical field
The present invention relates to Sewing machines, relate in particular to a kind of column Sewing machine with needle feed thread cutting mechanism.
Background technology
The machine of threading is to use one or more sewing thread, forms one or more stitchings on sewing, the machine that makes one or more layers sewing interweave or unite by a seam.In China Patent No., be 98122522.5, within open day, be June 23 in 1999 day, be called in the patent document of " clothes limit turns limit Sewing machines automatically " and disclose a kind of Sewing machines.There is the deficiency that needs artificial trimming in existing column Sewing machines.
Summary of the invention
The invention provides a kind of column Sewing machine with needle feed thread cutting mechanism, solved the problem that existing column Sewing machine with needle feed can not carry out automatic shearing.
Above technical problem solves by following technical proposal: a kind of column Sewing machine with needle feed thread cutting mechanism, comprises cutting blade, the driving connecting rod of cutting blade, the trimming cam of drive link and the cutter stator coordinating with cutting blade.During use, the present invention is arranged on to head base plate below, not during trimming cutting blade and cutter stator in separated position, between upper thread and inner line (being referred to as below sewing thread) slave blade and cutter stator, pass, while needing trimming, reciprocating by trimming actuated by cams connecting rod, connecting rod drives cutting blade with respect to cutter stator folding, cutter stator and cutting blade are cut off sewing thread, after secant completes, trimming cam stops drive link motion, and cutting blade stops at does not interfere Sewing machines to carry out the place of sewing operation.
The present invention also comprises clutch and slide block, described connecting rod one end and described cutting blade link together, the other end and described slide block link together, described trimming cam is cylindrical cam, the side face of described trimming cam is provided with chute, described slide block can link together to clutch with described chute by described clutch, described column Sewing machine with needle feed is provided with line shaft, and described trimming cam drives by described line shaft.Can be in the situation that do not increase the apparent size of existing column Sewing machines and realize the present invention is installed in Sewing machines.In Sewing machines work process, line shaft drives trimming cam to rotate, if do not carry out trimming work, under the effect of clutch, the slide block outside, the connecting rod that are positioned at chute can not move together in company with trimming cam; When wanting trimming, under the effect of clutch, slide block is positioned at chute, connecting rod moves together in company with trimming cam, drives cutting blade reciprocating motion during link motion, thereby realizes trimming.
As preferably, described clutch comprises mount pad, fork, electromagnet and back-moving spring, one end of described fork be provided with fork hinge and hinged with described mount pad by fork hinge, another is with together with described rod hinge connection; Described back-moving spring and electromagnet the two, one be used for driving fork to move axially along fork hinge and make that described slide block is inserted in described chute, another one is for driving fork move axially and described slide block is extracted in described chute along fork hinge.Simple in structure.
As preferably, described electromagnet is used for driving fork move axially and described slide block is inserted in described chute along fork hinge, and described back-moving spring is used for driving fork move axially and described slide block is extracted in described chute along fork hinge.If during electromagnet inefficacy (not producing magnetic force), trimming cam and connecting rod are in released state, be that the present invention can not carry out trimming action, otherwise moving electric sector-meeting is a kind of in motion, so the technical program can prevent that electromagnet from affecting the suture operation of Sewing machines while losing efficacy.
As preferably, described fork is provided with the first friction catch face, described installing rack is provided with the second friction catch face, together with slide block is connected to the second friction catch face with the first friction catch face described in described chute is when the released state, when slide block is positioned at described chute described in the first friction catch face and the second friction catch face separately.The method that existing clutch is controlled separation point position is, by controlling separated constantly realize, at cutting blade, moving to the moment of not interfering Sewing machines to carry out the position of sewing operation makes connecting rod separated with trimming cam, but the uncertainty due to the rotating speed of line shaft, the resistance of each moving part can be along with the variation of service time the impact of the factor such as variation, the motional inertia of connecting rod and cutting blade is among changing, therefore can produce moving electric sheet stop position inaccurate and interfere the phenomenon of the sewing operation of Sewing machines to produce, friction catch face is set, and can to play effect and anti-vibration that cutting blade is accurately stopped effective.
As preferably, the axis along continuous straight runs of described trimming cam extends, and described trimming cam is positioned at the top of described fork, and described the first friction catch face is arranged at the downside of described fork.This technical scheme can make the weight of fork also play the effect of Hoist braking effect, and the reliability while having improved braking, brakes reliability and improved good reliability when the present invention works.
The present invention also comprises knife rest and the movable arbor vertically extending, movable arbor is rotationally connected with described knife rest, described cutter stator is fixed in the upper end of described knife rest, described moving electric sheet and cutter stator along continuous straight runs distribute, described cutter stator is provided with stationary knife blade, described stationary knife blade vertically extends, the lower end of described movable arbor is connected with the crank that drives movable arbor to rotate, one end of described crank and described connecting rod is hingedly connected together, the other end of described connecting rod is connected with described trimming cam, described cutting blade is fixed in the upper end of described movable arbor, described cutting blade is provided with " V " font moving knife blade.While carrying out trimming operation, by movable arbor, drive cutting blade reciprocating rotation, in the process that cutting blade rotates, moving knife blade catches on sewing thread, sewing thread is drawn close towards stationary knife blade when moving knife blade slides, blade is cut and the action of sawing sewing thread simultaneously, can be avoided like this blade to produce concentrated wear, can make sewing thread be cut off reliably again.Connecting rod drives movable arbor to make cutter stator remove to carry out tangent line by rotational action by crank, can in the situation that link motion speed is less, realize cutting blade and there is larger trimming speed, thereby the reliability in the time of can further improving trimming, can also hour sewing thread be cut off reliably at line shaft rotating speed, the present invention can be mated with the Sewing machines of different rotating speeds, thereby improved versatility of the present invention.
As preferably, described cutting blade is tulwar, and the outer peripheral edges of described cutting blade are provided with described moving knife blade, described cutting blade along the axial lower surface of movable arbor, be provided with described moving knife blade.The present invention can both reliably entirely be cut off the different sewing wire harness in scatter angle and angle of inclination.
As preferably, described slide block is provided with dop, and described chute comprises the section of dodging and interfere section, described interfere section be provided with described dop match and stop slide block along described trimming cam sliding radially from the described flange skidding off section of interfering." section of dodging " refers to that the cutting blade when slide block is positioned at this position of chute is positioned at the part that can not interfere the position of Sewing machines sewing operation." interfere section " and refer to that the cutting blade when slide block is positioned at this position of chute is positioned at the part that can interfere the position of Sewing machines sewing operation.The all parts of existing chute are all opens, slide block can skid off the optional position from chute, this structure is controlled clutch can to produce cutting blade when inaccurate to stop at the position of interfering Sewing machines sewing operation, for fear of the generation of interference, to clutch control accuracy, requires high.When the technical program can make the clutch by any control accuracy carry out clutch for clutch control, cutting blade can not stop at the position of interfering Sewing machines sewing operation, good reliability.
As preferably, described trimming cam side face is provided with slide block and imports hole, and the aperture area that described slide block imports hole diminishes to bottom gradually from openend, described in the section of dodging be positioned at described slide block and import the bottom of cheating.Can reduce the required precision of the relative position between slide block and chute, improve the convenience while making; Even if produce a certain amount of displacement after slide block separation, also can again be incorporated in chute, improve anti-vibration ability of the present invention, and Sewing machines while being certain to produce vibration and sewing in sewing work process slide block be separated with chute.
The present invention has following advantage: can realize automatically cutting off of sewing thread, effectively improve the operating efficiency of Sewing machines.
Accompanying drawing explanation
Fig. 1 is the split view of the embodiment of the present invention one.
Fig. 2 is the local enlarged diagram at A place in Fig. 1.
Fig. 3 is the local enlarged diagram at B place in Fig. 1.
Fig. 4 is the use view of the embodiment of the present invention one.
Fig. 5 is the local schematic diagram of the embodiment of the present invention two.
Fig. 6 is the enlarged diagram of the trimming cam in the embodiment of the present invention two.
In figure: trimming cam mechanism 1, trimming cam 11, chute 111, the section of dodging 1111, interfere section 1112, flange 11121, slide block imports hole 112, cam shaft 12, back-up ring 13, clutch 2, mount pad 21, the first friction catch face 211, fork 22, the second friction catch face 221, electromagnet 23, fork hinge 24, back-moving spring 25, slide block 26, dop 261, suspension plate 27, linkage 3, connecting rod 31, right connecting bolt 32, left connecting bolt 33, tool rest 4, cutting blade 5, moving knife blade 51, the first moving knife blade 511, the second moving knife blade 512, the free end 5121 of the lower sword of the second moving knife blade, the 3rd moving knife blade 513, the free end 5131 of the lower sword of the 3rd moving knife blade, cutting blade along the axial upper surface 52 of movable arbor, crank 53, movable arbor 54, cutter stator 6, stationary knife blade 61, head base plate 7, head of sewing machine 8.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment mono-, and referring to Fig. 1, a kind of column Sewing machine with needle feed thread cutting mechanism, comprises trimming cam mechanism 1, clutch 2, linkage 3, tool rest 4, cutting blade 5 and cutter stator 6.
Trimming cam mechanism 1 comprises trimming cam 11, cam shaft 12 and back-up ring 13.Trimming cam 11 is cylindrical cam.The axis along continuous straight runs of trimming cam 31 extends.The side face of trimming cam 11 is provided with chute 111.Cam shaft 12 is tubular structure.The method that trimming cam mechanism 1 is combined is: cam shaft 12 is located in trimming cam 11 and by back-up ring 13 and is fixed.
Clutch 2 comprises mount pad 21, fork 22, electromagnet 23, fork hinge 24 and back-moving spring 25.Fork 22 is the level of state.Fork 22 upper surfaces are provided with slide block 26.One end of fork 22 is hinged by fork hinge 24 and mount pad 21.Electromagnet 23 is fixed on mount pad 21 by suspension plate 27.Slide block 26 is positioned at the below of chute 111 trimming cams 11.Certainly slide block 26 also can be set directly on linkage 3.Electromagnet 23 is for driving fork 22 axially move up and make slide block 26 be inserted into chute 111 (be also electromagnet 23 electric and slide block 26 is slided in chute 111 while producing magnetic force) along fork hinge.Back-moving spring 25 is for driving fork 22 axially move down and slide block 26 is extracted from chute 111 along fork hinge.
Linkage 3 comprises connecting rod 31, left connecting bolt 33 and right connecting bolt 32.Connecting rod 31 is universal bearing connecting rod.The right-hand member of connecting rod 31 links together by the other end of right connecting bolt 32 and fork 12.The left end of connecting rod 31 links together by one end of left connecting bolt 33 and crank 53.The lower end of the other end of crank 53 and movable arbor 54 is fixed together.Movable arbor 54 vertically extends.
Referring to Fig. 2, cutting blade 5 is provided with " V " font moving knife blade 51.Moving knife blade 51 has three.Article three, moving knife blade 51 is respectively the first moving knife blade 511, the second moving knife blade 512 and the 3rd moving knife blade 513.The first moving knife blade 511 is arranged at the outer peripheral edges of conducting strip 5.The 3rd moving knife blade 513 and the second moving knife blade 512 be arranged on cutting blade 5 along the axial lower surface of movable arbor.The free end 5121 of the lower sword of the second moving knife blade from the distance along the axial upper surface 52 of movable arbor of cutting blade, be greater than the 3rd moving knife blade lower sword free end 5131 from cutting blade along the axial upper surface 52 of movable arbor.Can further improve versatility of the present invention.
Referring to Fig. 3, cutter stator 6 is provided with stationary knife blade 61.Stationary knife blade 61 vertically extends.
Referring to Fig. 4 and in conjunction with Fig. 2 and Fig. 3, use makes, tool rest 4 is fixed on the downside of head base plate 7, mount pad 21 is fixed on the downside of head base plate 7, line shaft in trimming cam 11 and Sewing machines (is the lower shaft in Sewing machines in the present embodiment, in figure, do not draw) be fixed together coaxially, make integral body of the present invention be positioned at the below of head of sewing machine 8.Lower shaft drives trimming cam 11 to rotate, during suture, under the effect of back-moving spring 25, slide block 26 is positioned at the outside of chute 111, thus cutting blade 5 remains static and with outer peripheral face towards the mode of cutter stator 6 with cutter stator 6 separately, sewing thread passes between cutter stator 6 and cutting blade 5.While wanting trimming, give electromagnet 23 power supplies, electromagnet 23 produces magnetic force is inserted in chute 111 slide block 26, chute 111 is converted to the rotation of trimming cam 11 the reciprocal translation of connecting rod 31, connecting rod 31 drives movable arbor 52 reciprocating rotations by bent axle 51, movable arbor 52 drives cutting blade 5 to reset and swings, moving knife blade 51 all catches on and drives sewing thread close towards stationary knife blade 61 each strand in sewing thread (having two strands at least), 61 pairs of sewing threads of moving knife blade 51 and stationary knife blade produce the effect of cutting and sawing simultaneously, thereby sewing thread is cut off.Complete after trimming action, the dead electricity by controlling electromagnet 23 constantly, make slide block 26 under the effect of back-moving spring 25 with resting on the place of not interfering suture operation after chute 111 separation.
Embodiment bis-, referring to Fig. 5, are: fork 22 is provided with the first friction catch face 221 with the difference of embodiment mono-.The first friction catch face 221 is arranged at the downside of fork 22.Installing rack 21 is provided with the second friction catch face 211.Slide block 26 is provided with dop 261 towards one end of chute diapire 1111.
Referring to Fig. 6, chute 111 comprises the section of dodging 1111 and interferes section 1112.Interfere the notch end of section 1112 to be provided with flange 11121.Trimming cam 11 side faces are provided with the slide block diminishing gradually to bottom opening area from openend and import hole 112.The section of dodging 1111 is positioned at the bottom that slideway imports hole 112.
Referring to Fig. 5 and Fig. 6, slide block 26 with chute 111 when the released state, under the effect of back-moving spring 25 and fork 22 deadweights, together with the first friction catch face 221 is connected to the second friction catch face 211, making slide block and chute 111 separate rear fork 31 can stop in time.When slide block 26 is inserted in chute 111, no matter whether slide block aligns with chute, when trimming cam 11 turns to slide block 26 and is arranged in slide block and imports hole 112, the effect sliding block that imports hole 112 at slide block slides in the section of dodging 1111, when slide block 26 runs to while interfering section 1112, under the cooperation of flange 11121 and dop 261, slide block 26 can not shift out chute 111, thereby while making slide block 26 extract chute, cutting blade is to stop at the position of not interfering suture.
Claims (10)
1. a column Sewing machine with needle feed thread cutting mechanism, is characterized in that, comprises cutting blade, the driving connecting rod of cutting blade, the trimming cam of drive link and the cutter stator coordinating with cutting blade.
2. column Sewing machine with needle feed thread cutting mechanism according to claim 1, it is characterized in that, also comprise clutch and slide block, described connecting rod one end and described cutting blade link together, the other end and described slide block link together, described trimming cam is cylindrical cam, the side face of described trimming cam is provided with chute, described slide block can link together to clutch with described chute by described clutch, described column Sewing machine with needle feed is provided with line shaft, and described trimming cam drives by described line shaft.
3. column Sewing machine with needle feed thread cutting mechanism according to claim 2, it is characterized in that, described clutch comprises mount pad, fork, electromagnet and back-moving spring, one end of described fork be provided with fork hinge and hinged with described mount pad by fork hinge, another is with together with described rod hinge connection; Described back-moving spring and electromagnet the two, one be used for driving fork to move axially along fork hinge and make that described slide block is inserted in described chute, another one is for driving fork move axially and described slide block is extracted in described chute along fork hinge.
4. column Sewing machine with needle feed thread cutting mechanism according to claim 3, it is characterized in that, described electromagnet is used for driving fork move axially and described slide block is inserted in described chute along fork hinge, and described back-moving spring is used for driving fork move axially and described slide block is extracted in described chute along fork hinge.
5. according to the column Sewing machine with needle feed thread cutting mechanism described in claim 3 or 4, it is characterized in that, described fork is provided with the first friction catch face, described installing rack is provided with the second friction catch face, together with slide block is connected to the second friction catch face with the first friction catch face described in described chute is when the released state, when slide block is positioned at described chute described in the first friction catch face and the second friction catch face separately.
6. column Sewing machine with needle feed thread cutting mechanism according to claim 5, it is characterized in that, the axis along continuous straight runs of described trimming cam extends, and described trimming cam is positioned at the top of described fork, and described the first friction catch face is arranged at the downside of described fork.
7. according to the column Sewing machine with needle feed thread cutting mechanism described in claim 1 or 2 or 3 or 4, it is characterized in that, also comprise knife rest and the movable arbor vertically extending, movable arbor is rotationally connected with described knife rest, described cutter stator is fixed in the upper end of described knife rest, described moving electric sheet and cutter stator along continuous straight runs distribute, described cutter stator is provided with stationary knife blade, described stationary knife blade vertically extends, the lower end of described movable arbor is connected with the crank that drives movable arbor to rotate, one end of described crank and described connecting rod is hingedly connected together, the other end of described connecting rod is connected with described trimming cam, described cutting blade is fixed in the upper end of described movable arbor, described cutting blade is provided with " V " font moving knife blade.
8. column Sewing machine with needle feed thread cutting mechanism according to claim 7, is characterized in that, described cutting blade is tulwar, and the outer peripheral edges of described cutting blade are provided with described moving knife blade, described cutting blade along the axial lower surface of movable arbor, be provided with described moving knife blade.
9. according to the column Sewing machine with needle feed thread cutting mechanism described in claim 2 or 3 or 4, it is characterized in that, described slide block is provided with dop, described chute comprises the section of dodging and interference section, and described interference section is provided with described dop and matches and stop slide block along the sliding flange radially skidding off from described interference section of described trimming cam.
10. column Sewing machine with needle feed thread cutting mechanism according to claim 9, it is characterized in that, described trimming cam side face is provided with slide block and imports hole, and the aperture area that described slide block imports hole diminishes to bottom gradually from openend, described in the section of dodging be positioned at described slide block and import the bottom of cheating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734120.XA CN103726241B (en) | 2013-12-27 | 2013-12-27 | Column Sewing machine with needle feed thread cutting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734120.XA CN103726241B (en) | 2013-12-27 | 2013-12-27 | Column Sewing machine with needle feed thread cutting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103726241A true CN103726241A (en) | 2014-04-16 |
| CN103726241B CN103726241B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310734120.XA Expired - Fee Related CN103726241B (en) | 2013-12-27 | 2013-12-27 | Column Sewing machine with needle feed thread cutting mechanism |
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| CN (1) | CN103726241B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592121A (en) * | 2017-01-18 | 2017-04-26 | 浙江飞凤缝制设备有限公司 | Sewing machine automatic shearing mechanism |
| CN106988040A (en) * | 2017-06-05 | 2017-07-28 | 标准缝纫机菀坪机械有限公司 | A kind of integrative feeding sewing machine thread cutting mechanism |
| CN107419448A (en) * | 2017-06-24 | 2017-12-01 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of sewing machine |
| CN108589081A (en) * | 2018-08-02 | 2018-09-28 | 吴体民 | The cutting facility of column sewing machine |
| CN110042580A (en) * | 2019-06-04 | 2019-07-23 | 上海博岙机电制造有限公司 | A kind of movable cutter mechanism of the high trolley flat cutter trimming of modified |
| CN110241530A (en) * | 2018-03-08 | 2019-09-17 | 吴谨明 | The tangent mechanism of sewing machine |
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|---|---|---|---|---|
| US3173393A (en) * | 1961-12-13 | 1965-03-16 | Pfaff Ag G M | Thread cutting mechanism for lockstitch sewing machines |
| CN101144230A (en) * | 2006-09-15 | 2008-03-19 | Juki株式会社 | Sewing machine |
| CN102061579A (en) * | 2009-11-11 | 2011-05-18 | Juki株式会社 | Thread cutting device of sewing machine |
| CN202898752U (en) * | 2012-05-21 | 2013-04-24 | 东莞市嘉龙皮革机械有限公司 | Air cylinder actuating cam automatic trimming device |
| CN203729067U (en) * | 2013-12-27 | 2014-07-23 | 浙江飞凤缝制设备有限公司 | Thread trimming mechanism of vertical post needle feeding sewing machine |
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2013
- 2013-12-27 CN CN201310734120.XA patent/CN103726241B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173393A (en) * | 1961-12-13 | 1965-03-16 | Pfaff Ag G M | Thread cutting mechanism for lockstitch sewing machines |
| CN101144230A (en) * | 2006-09-15 | 2008-03-19 | Juki株式会社 | Sewing machine |
| CN102061579A (en) * | 2009-11-11 | 2011-05-18 | Juki株式会社 | Thread cutting device of sewing machine |
| CN202898752U (en) * | 2012-05-21 | 2013-04-24 | 东莞市嘉龙皮革机械有限公司 | Air cylinder actuating cam automatic trimming device |
| CN203729067U (en) * | 2013-12-27 | 2014-07-23 | 浙江飞凤缝制设备有限公司 | Thread trimming mechanism of vertical post needle feeding sewing machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592121A (en) * | 2017-01-18 | 2017-04-26 | 浙江飞凤缝制设备有限公司 | Sewing machine automatic shearing mechanism |
| CN106988040A (en) * | 2017-06-05 | 2017-07-28 | 标准缝纫机菀坪机械有限公司 | A kind of integrative feeding sewing machine thread cutting mechanism |
| CN107419448A (en) * | 2017-06-24 | 2017-12-01 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of sewing machine |
| CN110241530A (en) * | 2018-03-08 | 2019-09-17 | 吴谨明 | The tangent mechanism of sewing machine |
| CN108589081A (en) * | 2018-08-02 | 2018-09-28 | 吴体民 | The cutting facility of column sewing machine |
| CN110042580A (en) * | 2019-06-04 | 2019-07-23 | 上海博岙机电制造有限公司 | A kind of movable cutter mechanism of the high trolley flat cutter trimming of modified |
| CN110042580B (en) * | 2019-06-04 | 2023-12-22 | 上海博岙机电制造有限公司 | Improved generation high platform truck flat knife cuts line's movable knife mechanism |
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| Publication number | Publication date |
|---|---|
| CN103726241B (en) | 2016-08-17 |
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Granted publication date: 20160817 Termination date: 20191227 |