CN101319439A - Thread cut actuating device of sewing machine - Google Patents
Thread cut actuating device of sewing machine Download PDFInfo
- Publication number
- CN101319439A CN101319439A CNA2008101086837A CN200810108683A CN101319439A CN 101319439 A CN101319439 A CN 101319439A CN A2008101086837 A CNA2008101086837 A CN A2008101086837A CN 200810108683 A CN200810108683 A CN 200810108683A CN 101319439 A CN101319439 A CN 101319439A
- Authority
- CN
- China
- Prior art keywords
- cam
- mentioned
- roller
- cam path
- rotation
- 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.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B19/00—Programme-controlled sewing machines
- D05B19/02—Sewing machines having electronic memory or microprocessor control unit
- D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine including a thread cut actuating device that actuates more reliably. The sewing machine (1) includes: a thread cut unit which includes a fixed knife that is not shown by figures yet and a movable knife (14) that is movable with respect to the fixed knife; a cam (12) which is provided with a cam groove (12c); a sewing machine motor (2) that is not shown by figures yet; a coder (3) which detects rotary angle of the cam (12) via detection of an upper shaft that is not shown by figures yet; idler wheels (13) which are configured to be engaged with respect to the cam groove (12c) and to be connected to the movable knife (14) through a connecting rod (15); a cylinder (16) which enables the idler wheels (13) to enter into the inlet of the cam groove (12c) and engage with the cam groove; and a driving device (4) which drives and controls the sewing machine motor (2) and the cylinder (16).
Description
Technical field
The present invention relates to a kind of thread cut actuating device of Sewing machines, it makes movable cutting knife action and the cut-out suture according to the cam that is rotated with the driving shaft interlock.
Background technology
Current, as above-mentioned thread cut actuating device, known for example patent documentation 1 described thread cut actuating device, it has: cam, it is arranged on the driving shafts such as lower shaft of Sewing machines, has the cam path of regulation; Roller, its disposes relative with cam path; And actuator, it makes roller move in the mode that engages with cam path or leave, and when tangent line, utilizes actuator that roller is fastened on the cam path, and the cam path according to the cam that is rotated with above-mentioned driving shaft interlock drives movable cutting knife.
Fig. 6 illustrates the part of the structure of patent documentation 1 disclosed thread cut actuating device 100.
Thread cut actuating device 100 has: grooved cam 101, and it rotatably is supported on the not shown driving shaft; Roller 102, it is set to and can engages with the slot part 101a of grooved cam 101 or break away from; And functional component 103, it is set to and can contacts with roller/leave, and drives by actuator 104 roller 102 is entered from the peristome 101b of slot part 101a.In addition, roller 102 and not shown movable cutting knife binding.
Patent documentation 1: the spy opens the 2000-317178 communique
Summary of the invention
In this existing thread cut actuating device 100, being applied that parts 103 are pushed during the cell wall 101d collision of the roller that moves 102 and grooved cam 101, can make roller 102 rebound significantly (rebound) because of this collision, collide with grooved cam 101 once more with functional component 103 collisions, repeat to restrain gradually after the above-mentioned action.At this moment, in the process that repeats to rebound, grooved cam 101 has rotated, and the roller 102 that collides can change with the relative position of grooved cam 101.Therefore, might collide with the lateral surface of edge part 101c to the roller 102 of outside bounce-back from slot part 101a, be clamped between edge part 101c and the functional component 103 and mesh, in the case, produce movable cutting knife and be failure to actuate, simultaneously the problem points that self can't move of this thread cut actuating device 100.In addition, produce bigger mechanical load to each several part this moment, produces functional component 103 breakages such as grade etc., the problem points of thread cut actuating device 100 breakages.
The objective of the invention is to, can carry out thread cutting action reliably, prevent faults such as breakage.
The invention that technical scheme 1 is recorded and narrated is a kind of thread cut actuating device of Sewing machines, and it has: movable cutting knife (14), and it cuts off suture; Driving shaft (11), itself and drive motor link and rotate; Cam (12), it can utilize above-mentioned driving shaft and rotate, and forms the cam path (12c) that drives above-mentioned movable cutting knife; Detecting unit (3), it detects the anglec of rotation of above-mentioned cam; Roller (13), itself and above-mentioned movable cutting knife link, thereby can move with respect to above-mentioned cam path engaging or separation; And actuator, it moves above-mentioned rollers as the time spent, thereby engage with above-mentioned cam path, it is characterized in that having control module, it controls above-mentioned drive motor and above-mentioned actuator, make the rotation of above-mentioned cam, and when the anglec of rotation of utilizing above-mentioned detecting unit to detect above-mentioned cam is in above-mentioned rollers and can enters the angle of above-mentioned cam path, above-mentioned cam is stopped the rotation, after making above-mentioned actuator effect, above-mentioned cam is rotated once more.
Above-mentioned detecting unit is the parts that are used to detect the anglec of rotation of cam, can be arranged on drive motor or the driving shaft.
Above-mentioned driving shaft is the parts that are used to make the cam rotation, can be the lower shaft of Sewing machines or go up axle, and also can be the independent axle that links with above-mentioned axle.
In addition, above-mentioned cam can directly be fixed on the driving shafts such as lower shaft or last axle, also can be fixed on the rotating shaft that links with these driving shafts.
Above-mentioned drive motor is the parts that are used to make above-mentioned driving shaft rotation, can be sewing machine electromotor, also can be the independent motor that only is used for tangent line.
The invention that technical scheme 2 is recorded and narrated is characterised in that in the Sewing machines that technical scheme 1 is recorded and narrated, above-mentioned control module is controlled above-mentioned drive motor, so that when above-mentioned cam is rotated once more, above-mentioned cam is with the slow-speed of revolution rotation of regulation.
In addition, " slow-speed of revolution of regulation " of technical scheme 2, be the low rotating speed of comparing with the rotating speed of cam before the rotation that stops above-mentioned cam, be meant the roller that the inlet from cam path can be entered rotary speed at the cam that continues through this inlet back suitably to guide along cam path.
The effect of invention
According to technical scheme 1 described invention, if being the inlet of cam path, the anglec of rotation that detects cam by detecting unit is positioned at the position that roller can enter, then control module control drive motor temporarily stops it.That is, the rotation by cam temporarily stops, and can obtain the time of the bounce-back convergence of roller.Thus, can prevent that near the edge part engagement device the inlet owing to roller and cam path from stopping, or so the time mechanical load and install breakage, can carry out thread cutting action reliably, the reliability of Sewing machines and durability are further improved.
In addition, control module is positioned under the situation of angle that cam can enter cam path in the anglec of rotation that is detected cam by detecting unit, stops drive motor, in the driving that utilizes actuator and after roller enters inlet, and drive motor once more.Thus, not needing with the anglec of rotation of cam, promptly to become roller, can to enter the timing of angle of inlet of cam path corresponding, and the driving timing of strict control actuator can significantly alleviate because the action that timing offset causes is bad.That is, utilize the driving of actuator and mobile roller can enter the inlet of cam path more reliably.Thus, can carry out thread cutting action more reliably, the reliability of Sewing machines further significantly improves.
According to technical scheme 2 described inventions, after the temporary transient standby of cam, cam begins rotation with the slow-speed of revolution of regulation.Thus, even the stand-by time of cam is not sufficient to also can rotate with the slow-speed of revolution by cam after stand-by time as until the time of roller bounce-back convergence, obtain time until roller bounce-back convergence.That is, can prevent the following problems point effectively by this slow-speed of revolution rotation: because roller bounce-back and roller flies out to the outside of cam path causes the tangent line of thread cutting device bad, or the engagement between roller and the edge and produce stopping of thread cutting device.Thus, can provide reliability and durability higher Sewing machines.
Description of drawings
Fig. 1 is the oblique view of primary structure of the thread cutting device of expression Sewing machines.
Fig. 2 is the drive unit of expression Sewing machines and the block diagram of the relation between its connection device.
Fig. 3 is the key diagram that expression is arranged on the cam path on the cam.
Fig. 4 is the key diagram of the position relation between the plunger of the conversion of rotary angle position of expression cam path and roller and cylinder.Wherein, Fig. 4 (a) expression makes roller from the inlet of the cam path state to the medial movement of cam path by plunger portion.In addition, Fig. 4 (b) expression imports state in the cam path by the edge of cam path with roller.
Fig. 5 is that the tangent line that expression utilizes drive unit to carry out is controlled the flow chart of handling.
Fig. 6 represents the key diagram of a part of the structure of existing thread cutting device.
The specific embodiment
(overall structures of an embodiment of the invention)
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
As the Sewing machines 1 of an embodiment of the invention, when the operator for example produced the signal of indication tangent line by operation tangent line switch, thread cut actuating device 10 actions were automatically cut off suture by the co-operating between movable cutting knife and the fixed cutting tool.
As shown in Figures 1 and 2, Sewing machines 1 has: as the sewing machine electromotor 2 of drive motor, the extension that its configuration is connected the Sewing machines arm is provided with on the direction, and the not shown axle of going up is rotated; As the encoder 3 of detecting unit, it is arranged on above-mentioned going up on axle or the sewing machine electromotor, the anglec of rotation of axle in the detection; As the lower shaft 11 of driving shaft, it is to link with an above-mentioned mode that is rotated synchronously that goes up; And the drive unit 4 of conduct " control module ", the exercises that comprise thread cutting action of its control Sewing machines.
If the control by drive unit 4 drives sewing machine electromotor 2, then go up the axle rotation, make known needle bar up-down mechanism action.In addition, lower shaft 11 rotates known container mechanism or feed mechanism action with the rotation interlock of last axle.At this moment, the anglec of rotation of last axle is detected by encoder 3, exports drive unit 4 to.In addition, because last axle and lower shaft 11 be with constant rotating ratio interlock, thus can also be according to the anglec of rotation that goes up axle that detects by encoder 3, detection lower shaft 11 and be fixed on the anglec of rotation of the cam described later 12 on the lower shaft 11.
(thread cutting device)
Below, describe thread cut actuating device 10 in detail.
As shown in Figure 1, thread cut actuating device 10 has: cam 12, and it is arranged on the lower shaft 11, is rotated along with the rotation of lower shaft 11; Roller 13, it is set to, can by be arranged on cam 12 on cam path 12c engage, move to the direction that roughly connects along the configuration of lower shaft 11; Movable cutting knife 14, it is set to link with roller 13 via linking connecting rod 15, rotates to prescribed direction with the mobile interlock of roller 13; And cylinder 16, it is pushed roller 13 and move it to cam 12 side.
Columned cam 12 is fixedly supported on the lower shaft 11 with one heart.That is, cam 12 rotates integratedly with lower shaft 11.In addition, because encoder 3 as noted above can detect the anglec of rotation of lower shaft 11, so can detect the anglec of rotation of the cam 12 that is arranged on the lower shaft 11.On the outer peripheral face 12a of cam 12, the cam path 12c that can engage with roller 13 is set.Cam path 12c forms, corresponding with the rotation of cam 12 and make movably cut 14 in the mode of carrying out reciprocating action at the axis direction top offset.
In addition, outlet 12h is set on cam path 12c, the roller 13 that moves from outlet 12h along cam path 12c is by the exterior guiding to cam path 12c, and roller 13 is reset to position of readiness (position shown in Figure 1).
If lower shaft 11 rotation, then cam 12 also rotate, roller 13 along cam path 12c roughly along mobile on the direction of the length direction of lower shaft 11.Moving via linking connecting rod 15 of roller 13 rotated movable cutting knife 14.
The movable cutting knife 14 of the hook portion 14a of concavity is set on leading section, is set to and between not shown still portion and needle plate, back and forth rotates.Movable cutting knife 14 rotates by advance (downward direction of Fig. 1) and is reached the standard grade and roll off the production line to what derived the needle plate below by hook portion 14a hook and seizure.In addition, movable cutting knife 14 retreats (Fig. 1 upward to) and rotates and contact with not shown fixed cutting tool on the assigned position that is arranged on the needle plate below, and cut-out is reached the standard grade and rolled off the production line.Fixed cutting tool and movable cutting knife 14 work as " tangent line unit " thus.In addition, the reaching the standard grade of the hook portion 14a hook of movable cutting knife is so long as any one of the wire loop of reaching the standard grade that forms below needle plate or more than one position get final product.
In addition, movable cutting knife 14 is positioned at roller under the locational situation of highest order pan position 12g of cam path 12c, advances to the forefront and becomes the state of reaching the standard grade and rolling off the production line of catching.Then by roller 13 from outlet 12h to returning moving of position of readiness, the suture that cuts off seizure thereby movable cutting knife 14 retreats.In addition, roller 13 not with situation that cam path 12c engages under, movable cutting knife 14 is set to, not to the position standby that operation produces obstacle of making of Sewing machines 1.
(snap-in structure between roller and the cam path)
Below, describe the structure that roller 13 moves in the mode that engages with cam path 12c in detail.
Fig. 3 is the key diagram that expression is arranged on the cam path 12c on the cam 12.
As shown in Figure 3, on cam path 12c, on the outer peripheral face 12a and the boundary position between the end face 12b of cam 12, be provided for making roller 13 to slip into the inlet 12d of cam path 12c.Cylinder 16 is with respect to cam 12, and configuration is connected the end face 12b side that is provided with inlet 12d, and when not cutting off, configuration connects roller 13 between the end face 12b of the plunger portion 16a of cylinder 16 and cam 12.
In Fig. 4, if lower shaft 11 rotations by the driving of sewing machine electromotor 2 then are rotated by cam 12, cam path 12c relatively changes with respect to the rotary angle position of roller 13.At this moment, if the inlet 12d of cam path 12c is positioned at and roller 13 position side by side, then make sewing machine electromotor 2 stop, thereby the rotation of lower shaft 11 and cam 12 stop by drive unit 4 controls described later.That is, under the inlet 12d of cam path 12c is positioned at the state of sidepiece of roller 13, cam 12 is stopped.In addition, it is constant that inlet 12d and roller 13 are positioned at the last shaft angle degree of position side by side, and the shaft angle degree carries out the control of sewing machine electromotor 2 by encoder 3 detections this on by making, and makes the 12d that enters the mouth consistent with roller 13.
Then, the control by drive unit 4 drives cylinder 16, and plunger portion 16a moves rapidly in the mode to the elongation of cam 12 sides.Thus, shown in Fig. 4 (a), roller 13 is to the inlet 12d of cam path 12c side shifting, and roller 13 can collide with the wall 12e of cam path 12c.Because the impact in this when collision and roller 13 bounce-backs.At this moment, because the plunger 16a of cylinder 16 still is in elongation state, so the front end crash of roller 13 and plunger 16a resets to the inboard of cam path 12c from inlet 12d once more.At this moment, even roller 13 rebounds once more, also utilize plunger 16a to be reset to cam path 12c once more.By repeating above-mentioned action, the bounce-back campaign of roller 13 restrains gradually.
Since the bounce-back campaign of this roller 13 restrain during, sewing machine electromotor 2 stops by the control of drive unit, thereby the inlet 12d of cam path 12c maintains on the position relative with plunger 16, so can carry out the convergence of the bounce-back campaign of above-mentioned rollers 13 reliably.
Then, make lower shaft 11 restart rotation by drive unit with the slow-speed of revolution (for example 170[rpm]) of regulation.Cam 12 rotations thus, cam path 12c changes with respect to the rotary angle position of roller 13.Thus, shown in Fig. 4 (b),,, move according to the shape of cam path 12c with roller 13 interior side directed to cam path 12c by the edge 12f on the terminal part of the inlet 12d that is arranged on cam path 12c.Like this, rotate along with the mobile of cam 13 via linking the movable cutting knife 14 that connecting rod 15 is connected with roller 13, seizure is reached the standard grade and is rolled off the production line, by and fixed cutting tool between friction slip carry out thread cutting action.
In addition, plunger 16a driven device 4 controls of cylinder 16 continue to keep extended position (position shown in Fig. 4 (a)), import cam path 12a until roller 13 by edge 12f.That is, the plunger 16a of cylinder 16 utilizes air pressure that roller 13 is flexibly pushed to cam 12 sides.If rotating to, cam 12 make cam path 12c be positioned at the position shown in Fig. 4 (b), then cylinder 16 actions, and plunger 16a shrinks mobile in the mode that enters drive division 16b.
(drive unit)
Use the flow chart of Fig. 5 below, describe in the function of drive unit 4 part relevant in detail with control thread cut actuating device 10.
Specifically, drive unit 4 at first drives sewing machine electromotor 2 (step S2) and makes lower shaft 11 rotations, thereby makes cam 12 rotations.At this moment, by the output of encoder 3 drive unit 4 detect cams 12 rotary angle position, be the rotary angle position of cam path 12c.Go into 12d when being positioned at the sidepiece (state shown in Fig. 4 (a)) of roller 13 (step S3: be) what cam 12 rotated to cam path 12c, drive unit 4 makes sewing machine electromotor 2 stop (step S4).
Then, drive unit 4 makes cylinder 16 actions, and control plunger 16a is to cam 12 sides elongations (step S5).Thus, as noted above, roller 13 is pushed and is moved to the inlet 12d of cam path 12c side.Then, after drive unit 4 was kept halted state with the predefined time, with driven at low speed sewing machine electromotor 2, control lower shaft 11 and cam 12 were rotated (step S6) with the slow-speed of revolution (for example 170[rpm]).
In addition, preferably from sewing machine electromotor 2 stop to begin to the required dwell time of the stroke of low speed rotation be short period (for example 100[ms] about).In addition, preferably under the situation with respect to wall 12e bounce-back of roller 13 for example, rule of thumb rule is obtained the time of restraining until this bounce-back to this dwell time, is set to more than or equal to the above-mentioned time.
Then, rotate to (step S7: be) when utilizing edge 12f that roller 13 is imported cam path 12c (state shown in Fig. 4 (b)) at cam 12, drive unit 4 control cylinders 16 make plunger 16a move (step S8) in the mode of shrinking to drive division 16b side.
Then, drive unit 4 drives sewing machine electromotor 2 (step S9) with common cut-out actuating speed, makes lower shaft 11 and cam 12 only rotate (step S10: be) on the cam path 12c of cam 12 and rotary angle position that roller 13 engages.Like this, movably cutting knife 14 rotates the thread cutting action of carrying out as noted above along with moving of roller 13.If the rotary angle position of cam 12 arrives following position, promptly, roller 13 leaves and removes the position of the engaging between roller 13 and the cam path 12c (step S10: not), then drive unit 4 makes sewing machine electromotor stop (step S11) from the outlet 12h of cam path 12c.More than, the processing of drive unit 4 finishes.
(action effect that the Sewing machines of above-mentioned embodiment produces)
According to above-mentioned embodiment, if the anglec of rotation that detects cam 12 by encoder 3 is in the angle that the inlet 12d of cam path 12c can make roller 13 enter, then drive unit 4 control sewing machine electromotors 2 make its temporary transient standby.Thus, because under the situation of the reaction force resilience that roller 13 collides because of the wall 12e with cam path 12c, also can control sewing machine electromotor 2 and make its temporary transient standby, so reduce because cam 12 rotations under the state that roller 13 flies out to the outside of cam path 12c, thereby produce the possibility that roller 13 is not directed into the problem among the cam path 12c.That is, the rotation of cam 12 temporarily stops owing to the temporary transient standby of sewing machine electromotor 2, thereby can obtain the time until roller 13 bounce-back convergences.Thus, can solve the following problems point: roller 13 is not imported into cam path 12c and breaks away from, and movable cutting knife 14 can't move and not carry out tangent line.And can solve the following problems point: thread cut actuating device 10 stops because roller 13 is with the edge 12f engagement of cam path 12c, or thread cut actuating device 10 breakages owing to the mechanical load of this moment.Thus, can provide the Sewing machines 1 with the thread cut actuating device 10 that moves more reliably, the reliability and the durability of Sewing machines further improve.
In addition, because the plunger 16a of cylinder 16 is stretched to roller 13 is fed to cam path 12c because of edge 12f position (position shown in Fig. 4 (a)), so at roller 13 because under the situation about moving in the mode that breaks away from from cam path 12c with the reaction of the wall 12e collision of cam path 12c, also can brake it with plunger 16a collision, make this roller 13 be positioned at the inboard of the inlet 12d of cam path 12c by roller 13.Thus, can provide the Sewing machines 1 with the thread cut actuating device 10 that further moves reliably, the reliability and the durability of Sewing machines further improve.
In addition, on the basis of above-mentioned action effect, after sewing machine electromotor 2 temporarily stops, from the driving that utilizes cylinder 16 and roller 13 enters inlet 12d, drive sewing machine electromotor 2 once more.Thus, not needing with the anglec of rotation of cam 12, promptly to become roller 13, can to enter the timing of angle of inlet 12d of cam path 12c corresponding, and the driving timing of strict control cylinder 16 can significantly alleviate because the action that timing offset causes is bad.That is, utilize the driving of cylinder 16 and mobile roller 13, can enter the inlet 12d of cam path 12c more reliably.Thus, can provide the Sewing machines 1 with the thread cut actuating device 10 that moves more reliably, the reliability of Sewing machines further significantly improves.
In addition, since from sewing machine electromotor 2 stop to begin to the required dwell time of the stroke of low speed rotation be short period (for example 100[ms] about), so the thread cutting action of thread cut actuating device 10 basically can be owing to this stops to feel slow for the operator.Thus, can provide have the comfortableness of not losing automatic tangent and producing, the Sewing machines 1 of the thread cut actuating device 10 that moves more reliably, the reliability of Sewing machines further improves.
And, after roller 13 enters from the inlet 12d of cam path 12c, with the driving of the slow-speed of revolution of regulation (for example 170[rpm]) beginning sewing machine electromotor 2.Thus, even the stand-by time of sewing machine electromotor 2 is not sufficient to also can obtain the time until the resilience convergence of roller 13 by drive sewing machine electromotor 2 with this slow-speed of revolution after stand-by time as until the time of the resilience of roller 13 convergence.Promptly, can be by this slow-speed of revolution the more effective following problems point that prevents: roller 13 flies out to the outside of cam path 12c because roller 13 carries out resilience, thereby cause the tangent line of thread cut actuating device 10 bad, or produce stopping of thread cut actuating device 10 by the engagement between roller 13 and the edge 12f.Thus, can provide the higher Sewing machines of reliability and durability 1.
(other)
In addition, in the above-described embodiment, Sewing machines 1 has container mechanism, but also can be the Sewing machines with container mechanism, for example is to utilize looper etc. to form the Sewing machines of stitching.
In addition, the device that cuts off suture by the collaborative work of movable cutting knife and fixed cutting tool is shown, but also can be to only cut off the thread cutting device enforcement of suture by movable cutting knife.
In addition, can in the scope that does not break away from the architectural feature that above-mentioned embodiment records and narrates, each several part be changed.The for example tangent line indication that is produced by the tangent line switch also can be the input from the tangent line indication of touch panel display, also can be the tangent line order of inserting in the sewing program of the Sewing machines that uses stitch data to make.
In addition, the slow-speed of revolution of afore mentioned rules (for example 170[rpm]) and from sewing machine electromotor 2 stop to begin to the required time of slow-revving stroke (for example 100[ms] about) only be an example, be not limited to this numerical value certainly.
In addition, in the above-described embodiment, use cylinder 16 as actuator, as long as but can realize identical function, also can be other structures (for example solenoid etc.).
Claims (2)
1. the thread cut actuating device of a Sewing machines, it has:
Movable cutting knife, it cuts off suture;
Driving shaft, itself and drive motor link and rotate;
Cam, it can utilize above-mentioned driving shaft and rotate, and forms the cam path that drives above-mentioned movable cutting knife;
Detecting unit, it detects the anglec of rotation of above-mentioned cam;
Roller, itself and above-mentioned movable cutting knife link, thereby can move with respect to above-mentioned cam path engaging or separation; And
Actuator, it moves above-mentioned rollers as the time spent, thereby engages with above-mentioned cam path,
It is characterized in that,
Has control module, it controls above-mentioned drive motor and above-mentioned actuator, make above-mentioned cam rotation, and when the anglec of rotation of utilizing above-mentioned detecting unit to detect above-mentioned cam is in above-mentioned rollers and can enters the angle of above-mentioned cam path, above-mentioned cam is stopped the rotation, after making above-mentioned actuator effect, above-mentioned cam is rotated once more.
2. the thread cut actuating device of Sewing machines according to claim 1 is characterized in that,
Above-mentioned control module is controlled above-mentioned drive motor, so that when above-mentioned cam is rotated once more, above-mentioned cam is with the slow-speed of revolution rotation of regulation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007148230 | 2007-06-04 | ||
| JP2007148230A JP2008295946A (en) | 2007-06-04 | 2007-06-04 | Sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101319439A true CN101319439A (en) | 2008-12-10 |
Family
ID=39760703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101086837A Pending CN101319439A (en) | 2007-06-04 | 2008-06-04 | Thread cut actuating device of sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2000570A1 (en) |
| JP (1) | JP2008295946A (en) |
| KR (1) | KR20080106850A (en) |
| CN (1) | CN101319439A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041647A (en) * | 2009-10-13 | 2011-05-04 | Juki株式会社 | Sewing machine |
| CN104358042A (en) * | 2014-12-12 | 2015-02-18 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of pattern sewing machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1395652B1 (en) * | 2009-08-03 | 2012-10-16 | P A M I Produzione Automazione Macchine Ind Di Tomaselli S R L | WIRE CUTTING CONTROL DEVICE APPLIED TO A SEWING MACHINE |
| JP5555470B2 (en) * | 2009-10-13 | 2014-07-23 | Ｊｕｋｉ株式会社 | sewing machine |
| CN105926193A (en) * | 2016-06-30 | 2016-09-07 | 拓卡奔马机电科技有限公司 | Trimming mechanism of sewing machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1941794A1 (en) * | 1969-08-16 | 1971-03-18 | Pfaff Ag G M | Thread cutting device on lockstitch sewing machines |
| JPS58198386A (en) * | 1982-05-17 | 1983-11-18 | 三菱電機株式会社 | Yarn cutter apparatus of sewing machine |
| JPH07114870B2 (en) | 1991-03-29 | 1995-12-13 | ジューキ株式会社 | Sewing machine thread trimmer |
| JPH07666A (en) * | 1993-06-14 | 1995-01-06 | Brother Ind Ltd | Control device for thread cutter driving cam of sewing machine |
| US5372079A (en) | 1993-08-11 | 1994-12-13 | The Singer Company N.V. | Thread trimming device for a sewing machine |
| JPH08141265A (en) * | 1994-11-25 | 1996-06-04 | Brother Ind Ltd | Sewing machine operating device |
| US5967069A (en) | 1997-09-08 | 1999-10-19 | Rodriguez; Felipe | Sewing machine cutting system having microprocessor controlled cutting blade |
| JP2000317178A (en) * | 1999-05-07 | 2000-11-21 | Juki Corp | Thread cutter device |
-
2007
- 2007-06-04 JP JP2007148230A patent/JP2008295946A/en active Pending
-
2008
- 2008-06-02 EP EP08157444A patent/EP2000570A1/en not_active Withdrawn
- 2008-06-03 KR KR1020080052057A patent/KR20080106850A/en not_active Application Discontinuation
- 2008-06-04 CN CNA2008101086837A patent/CN101319439A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041647A (en) * | 2009-10-13 | 2011-05-04 | Juki株式会社 | Sewing machine |
| CN102041647B (en) * | 2009-10-13 | 2014-04-09 | Juki株式会社 | Sewing machine |
| CN104358042A (en) * | 2014-12-12 | 2015-02-18 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of pattern sewing machine |
| CN104358042B (en) * | 2014-12-12 | 2016-08-24 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of pattern sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080106850A (en) | 2008-12-09 |
| EP2000570A1 (en) | 2008-12-10 |
| JP2008295946A (en) | 2008-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101319439A (en) | Thread cut actuating device of sewing machine | |
| CN101403167B (en) | Cloth feeding device of sewing machine | |
| CN101275342B (en) | Sewing machine | |
| CN103485087A (en) | Overlock sewing machine | |
| US20160200532A1 (en) | Corrugated paperboard sheet feeding apparatus | |
| CN1676724B (en) | Threading holder of sewing machine | |
| CN110520227A (en) | Punching system | |
| CN101519834A (en) | Trimming, pressure-lifting and linear-sweeping drive mechanism in sewing machine | |
| CN101104984B (en) | Binding sewing machine | |
| CN101892563B (en) | Sewing machine | |
| CN1542195B (en) | Sewing machine | |
| CN100447327C (en) | Tread cutter | |
| CN101195949B (en) | Sewing machine for sewing panel strip | |
| KR20120106508A (en) | Sewing machine and control method thereof | |
| JP3897641B2 (en) | sewing machine | |
| CN101550643B (en) | Backfolding tailoring control device of tailoring device | |
| CN101545180A (en) | Cloth cutting device of button hole catch sewing machine | |
| CN101724986B (en) | Sewing machine | |
| CN101440555A (en) | Sewing machine | |
| CN101748561B (en) | Buttonhole sewing machine | |
| CN101265644B (en) | Wire-off device for electric sewing machine | |
| CN101760904B (en) | Sewing machine | |
| CN103469505A (en) | Sewing machine | |
| CN102041647B (en) | Sewing machine | |
| CN101713126B (en) | A seamer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20081210 |