CN1752321B - Cloth feeding device for sewing machine - Google Patents
Cloth feeding device for sewing machine Download PDFInfo
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- CN1752321B CN1752321B CN2005101063653A CN200510106365A CN1752321B CN 1752321 B CN1752321 B CN 1752321B CN 2005101063653 A CN2005101063653 A CN 2005101063653A CN 200510106365 A CN200510106365 A CN 200510106365A CN 1752321 B CN1752321 B CN 1752321B
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- cloth
- pushing shaft
- cloth pushing
- driving force
- horizontal
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
- D05B27/04—Work-feeding means with feed dogs having horizontal and vertical movements arranged above the workpieces
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a cloth feeding device of the sewing machine, having a cloth feeding holder of the cloth feed teeth for keeping the sewed object on the feeding needle board, an upper and lower cloth feeding axe for full rotation and bringing shock driving force upwards and downwards, a horizontal cloth feeding axe for bring shock driving force to the cloth feeding holder in the feeding direction, a regulating machine of the amount of the cloth for adjusting the horizontal shock amplitude of the horiaontal cloth feeding axe; moreover, the upper and lower cloth feeding axis are set on the upstream side of the feeding direction closer to the sewed object contrast to the horizontal cloth feed axis. Ends of the cloth feed base side of the upper and lower cloth feed axis are formed on the end of the cloth feed base side or the fully rotary hook closer to the vertical unit body side compared with the horizontal cloth feed axis. The cloth feed unit of the sewing machine can exactly transmit the sewed object.
Description
Technical field
The cloth-feeding device that the present invention relates to utilize the work feed motion of feed dog and transfer the Sewing machines of sewn object.
Background technology
On Sewing machines, utilize from motor of sewing machine and transmit its driving force, with the unification that realizes drive source (and, so-called also comprising with the cycle of natural multiple or the driving of frequency synchronously of this moment) to each one as main drive source.And; In head of sewing machine portion side; Through by motor of sewing machine in head of sewing machine portion fully rotation drive on axle and each one is applied its driving force; In Sewing machines base plate side, through by the binding of belt or bar etc. and to the lower shaft that drives with the equidirectional rotation fully of speed with last axle and to sending each one such as portion's tooth to apply its driving force.
The feed dog utilization is cloth pushing shaft and horizontal cloth pushing shaft up and down, merges with same period and in suitable phase-group and gives shaking and the shaking of cloth feeding direction up and down, describes the motion of oval track.Through this oval track top the time, protrude to carry out the conveying of sewn object from the through hole of being located on the needle plate upper end of feed dog.In addition, rotating shuttle and last axle interlock and above axle twice speed reverse and are driven in rotation.
Usually, lower shaft is used as above-mentioned cloth pushing shaft up and down and uses, and passes through connect mechanism from cloth pushing shaft and rotary shuttle shaft or trunnion axis link up and down.From effectively utilizing the viewpoint of Sewing machines base plate interior space or minimizing number of parts; Hope that lower shaft has rotary shuttle shaft, all functions of cloth pushing shaft, horizontal cloth pushing shaft up and down; But owing to need the counter-rotating of the twice speed of above axle to drive rotary shuttle shaft; And horizontal cloth pushing shaft is in swing movement, so can only be as the function use of cloth pushing shaft up and down.
That is, traditional Sewing machines, as shown in Figure 6, at the Sewing machines base plate interior, with the mode of clamping rotary shuttle shaft 101 cloth feeding direction upstream side configuration level cloth pushing shaft 102 at sewn object, the configuration cloth pushing shaft 103 (for example, with reference to patent documentation 1) up and down in the downstream.
In addition, cloth pushing shaft 103 up and down, driving with the speed rotation with last axle is equidirectional, and converted into the reciprocal driving of above-below direction by eccentric cam 104 by motor of sewing machine, and the work feed seat 106 that keeps feed dog 105 is transmitted knee-actions.
In addition, horizontal cloth pushing shaft 102 drives the rotation of cloth pushing shaft 103 up and down and converts back and forth shaking of horizontal direction into, and the well-known transmission mechanism that utilizes the reciprocal scope of scalable is to the horizontal reciprocating action of work feed seat 106 transmission.
In addition, rotary shuttle shaft 101 transmits the rotary driving force of twice speed counter-rotating through well-known transmission mechanism from cloth pushing shaft 103 up and down, and the rotation of carrying out rotating shuttle drives.
[patent documentation 1] spy opens the 2000-176189 communique
But; Traditional Sewing machines; Owing to be the action that moves back and forth of giving cloth feeding direction from an end of the cloth feeding direction of work feed seat 106 with feed dog 105; Give the structure that moves back and forth action of above-below direction from the other end, so in the cloth feeding direction upstream-side-end and the end of downstream side of feed dog, its knee-action displacement is different.The A1 of Fig. 7 has shown the motion track of feed dog 105 cloth feeding direction end of downstream side, and B1 representes the motion track of feed dog 105 cloth feeding direction upstream-side-end.In addition, the transverse axis among the figure is represented the height above the needle plate.As shown in the figure, because in the end in feed dog cloth feeding direction downstream, near cloth pushing shaft 103 up and down, so its knee-action displacement is bigger.
On the other hand, also be provided with when on the Sewing machines base plate, making from above push the presser feet 107 of sewn object.This presser feet 107, the centre position of its cloth feeding direction are center of gravity, are pushed downwards by support bar 108 in the position in cloth feeding direction downstream and support this center of gravity.
When the cloth feeding direction downstream applied top locomotivity with big displacement to such presser feet 107 by feed dog 105, the presser feet 107 of flexibly being pushed support upwards produces beated, and can not correctly carry sewn object.
In addition; If suppress this phenomenon, as shown in Figure 7, in feed dog 105 upstream-side-end and end of downstream side; To become consistent from the height adjustment of needle plate protrusion; Then at the little upstream side of above-below direction displacement, oval major axis side vertex position appears at the needle plate top, has possibility and produces problem from the distance of Fig. 7 symbol h to cloth feeding direction that return.Consequently, upstream-side-end and end of downstream side generation cloth feed amount error at feed dog have also produced the discomfort that can not correctly carry sewn object this moment.
Summary of the invention
The objective of the invention is to form the work feed track of the feed dog that prevents that presser feet from upwards beating.
In addition, the lubriation material that the present invention also aims to simplify cloth pushing shaft rotating mechanism up and down and need not be lubricated this mechanism.
In addition, the present invention also aims to improve the operability such as maintenance of maintaining by the operator.
The cloth-feeding device of the present invention's 1 Sewing machines; Adopt following structure; That is, have: be kept for carrying the work feed seat of the feed dog of the sewn object on the needle plate, through wheel then to the work feed seat apply above-below direction the cloth pushing shaft up and down that shakes driving force, rotary shuttle shaft be clipped in the middle and be configured in cloth pushing shaft up and down opposition side and to the work feed seat apply the horizontal cloth pushing shaft that shakes driving force of cloth feeding direction, the level of the horizontal cloth pushing shaft of adjusting is shaken the work feed governor motion of amplitude; And, through above-below direction shake with cloth feeding direction shake synthetic, and make feed dog carry out oval motion, thereby carry out the conveying of sewn object; Cloth pushing shaft up and down is disposed at the upstream side that leans on the throughput direction of sewn object than horizontal cloth pushing shaft.
What is called in said structure " full rotation " is meant in the predetermined angular scope when carrying out reciprocal rotational motion differently, is to carry out to unidirectional rotation continuously.
In said structure, because cloth pushing shaft is configured in than horizontal cloth pushing shaft by the cloth feeding direction upstream side, so the cloth feeding direction upstream side can move feed dog with the state that has strengthened the displacement that moves up and down than the downstream up and down.
The cloth-feeding device of the present invention's 2 Sewing machines has 1 described same structure with the present invention, and adopts following structure, that is, cloth pushing shaft is given the full rotation driving force by synchronous belt up and down.
In said structure, cloth pushing shaft obtains a rotary driving force through synchronous belt from drive source or last axle up and down.
The cloth-feeding device of the present invention's 3 Sewing machines has 1 described same structure with the present invention, and adopts following structure, that is, the said end of the work feed seat side of cloth pushing shaft up and down is positioned to lean on than the end of the work feed seat side of said horizontal cloth pushing shaft and indulges main body section one side.
In said structure, with the end that is configured in the work feed seat side of cloth pushing shaft up and down and carry out full rotation campaign and be in the position of high temperature, be disposed at end than the work feed seat side of horizontal cloth pushing shaft by indulging the main body section side.
The cloth-feeding device of the present invention's 4 Sewing machines; Have 3 described same structures with the present invention, and adopt following structure, promptly; The end of the work feed seat side of said up and down cloth pushing shaft is positioned to lean on than the end of the vertical main body section opposition side of the rotating shuttle that links with said rotary shuttle shaft and indulges main body section one side.
In said structure, with the end that is configured in the work feed seat side of cloth pushing shaft up and down and carry out full rotation campaign and be in the position of high temperature, be disposed at end than the vertical main body section opposition side of rotating shuttle that links with rotary shuttle shaft by indulging main body section one side.
The cloth-feeding device of the present invention's 5 Sewing machines; Have 1 described same structure with the present invention, and adopt following structure, promptly; On said rotary shuttle shaft and end vertical main body section opposition side; Be provided with the rotating shuttle that the outer rotating shuttle by interior rotating shuttle and rotation constitutes, push said in the interior rotating shuttle presser feet of rotating shuttle, be fixed on than the work feed seat end of said cloth pushing shaft up and down and lean on an opposite side of indulging main body section.
In said structure; With the end of the vertical main body section opposition side of rotary shuttle shaft on disposed the rotating shuttle that the outer rotating shuttle by interior rotating shuttle and rotation constitutes, and the interior rotating shuttle presser feet that will push rotating shuttle in this is fixed on than the end of the work feed seat side of cloth pushing shaft up and down leaning on the opposition side of indulging main body section.
(invention effect)
According to the present invention 1 because up and down cloth pushing shaft is configured in the upstream side that leans on cloth feeding direction than horizontal cloth pushing shaft, so, can move feed dog with the state that the cloth feeding direction upstream side strengthens the displacement that moves up and down than the downstream.
Therefore, be the presser feet that fulcrum is pressed and supports to lean on the cloth feeding direction downstream than its position of centre of gravity, the motion of feed dog upper end can be easily followed, and the generation of takeofing can be suppressed.With this, can correctly carry sewn object.
In addition, be accompanied by above-mentioned effect, can avoid in the past upper dead center position to be arranged on the high position and produce the phenomenon of returning, also can correctly carry out the conveying of sewn object from this viewpoint because of with the dog upper end.
According to the present invention 2, be rotated driving through synchronous belt, can be easily corresponding dryingization (not using fluid lubricant), and comparing during with gear drive can realize that simple structure, minimizing number of parts, saving are provided with the space.
In addition, when the interlock realized with synchronous belt and last axle, can realize this with more easy structure and go up spool and the interlock of the equidirectional rotation of same speed of cloth pushing shaft up and down.
According to the present invention 3; Because up and down the end of the work feed seat side of cloth pushing shaft is configured in the end that is positioned at than the work feed seat side of above-mentioned horizontal cloth pushing shaft and leans on vertical main body section side, loads and unloads so the operator is more easily partly waited to rotating shuttle when the replacing shuttle.
In addition; Owing to cloth pushing shaft about the general is configured in the upstream side of the throughput direction of the sewn object of horizontal cloth pushing shaft; So as operator during in the operation of the upstream side of the throughput direction of sewn object; Though because of carrying out full rotation the danger of high temperatureization is arranged, the end of the work feed seat side of cloth pushing shaft was away from the operator about also can make this moment.
According to the present invention 4 because up and down the end of the work feed seat side of cloth pushing shaft is configured in the vertical main body section side position that is positioned at the vertical main body section opposition side end of rotating shuttle that links with rotary shuttle shaft, institute partly waits the easier of change so that the operator loads and unloads sewing-machine rotating shuttle.
In addition; Because cloth pushing shaft is configured in the upstream side that leans on the sewn object throughput direction than horizontal cloth pushing shaft up and down; So when the operator when sewn object throughput direction upstream side is operated; Though because of full rotation has the danger of high temperatureization, the end that also can make the work feed seat side of cloth pushing shaft up and down this moment is away from the operator.
According to the present invention 5; Because the interior rotating shuttle presser feet of rotating shuttle is configured in to lean on than the end of the work feed seat side of cloth pushing shaft up and down and indulges the main body section opposition side in will pushing; So can make the operator load and unload in rotating shuttle presser feet etc. become easily, and can easily regulate rotating shuttle presser feet in this.
Description of drawings
Fig. 1 is the interior just structure chart of major part structure of Sewing machines base plate that the embodiment of the invention is overlooked in expression.
Fig. 2 is the sectional view along the V-V line among Fig. 1.
Fig. 3 is the sectional view along the W-W line among Fig. 1.
Fig. 4 is the cloth feed amount governor motion stereogram that expression is used to regulate the reciprocal rotational angle that transmits to the horizontal cloth pushing shaft of transmission mechanism.
Fig. 5 representes that side by side feed dog is just sending the curve map of motion track of motion track and the upstream-side-end of direction end of downstream side.
Fig. 6 is the structure chart of primary structure of the cloth-feeding device of the traditional Sewing machines of expression.
Fig. 7 is the motion track that just send the direction end of downstream side of the traditional Sewing machines feed dog of expression side by side and the motion track curve map of upstream-side-end.
Fig. 8 is near the enlarged drawing of the major part the full rotation shuttle 31 of presentation graphs 1.
Fig. 9 is the enlarged drawing of major part of the Sewing machines 100 of expression second embodiment of the invention.
Among the figure: 10-Sewing machines, 11-needle plate, 13-synchronous belt, 14, the 15-belt pulley; 31-full rotation shuttle, the outer rotating shuttle of 31a-, rotating shuttle in the 31b-, 32-rotary shuttle shaft; Rotating shuttle presser feet in the 33-, 40-cloth-feeding device, 41-feed dog, 42-work feed seat; 43-is cloth pushing shaft up and down, the horizontal cloth pushing shaft of 46-, 52-cloth feed amount governor motion, 60-gear mechanism.
The specific embodiment
[first embodiment]
(overall structure of the embodiment of the invention)
Below, specify embodiments of the invention with reference to Fig. 1～Fig. 5.Fig. 1 is the just structure chart of overlooking in the base plate of stating behind the Sewing machines 10 of the embodiment of the invention 21 of primary structure, and Fig. 2 is the sectional view along the V-V line among Fig. 1, and Fig. 3 is the sectional view along the W-W line among Fig. 1.
Above-mentioned Sewing machines 10 has: make not shown up-down mechanism that eedle moves up and down, as the not shown motor of sewing machine of its drive source, bottom line is wrapped in rotary shuttle mechanism 30 in the suture that passes suture on the eedle, consistent with moving up and down of eedle and carry the cloth-feeding device 40 as the cloth of sewn object on the needle plate 11, transmit the gear mechanism 60 of rotary driving forces, push from the top and keep the presser feet 19 of the cloth on the needle plate 11 and support the body frame 20 of above-mentioned each structure to rotary shuttle mechanism 30 from the cloth pushing shaft up and down 43 of cloth-feeding device 40 through full rotation shuttle 31.
(body frame)
In addition, base plate 21 is being arranged at Sewing machines 10 under the state on the horizontal plane, and its length direction is a horizontal direction.And, in following explanation, with the length direction of base plate 21 as Y direction, will with horizontal direction parallel and the direction vertical with Y direction as X-direction, the direction vertical with X axle and Y direction is as Z-direction.
(needle plate and presser feet)
As shown in Figure 3, needle plate 11 is on base plate 21 and be arranged on the end with vertical main body section 22 opposition sides.Be formed with the pin hole that eedle passes on this needle plate 11 and haunt after the through hole 11a of feed dog 41 of the cloth-feeding device 40 stated.
In addition, in the just in time centre position of presser feet 19 length directions, be formed with breach (omitting diagram) that the eedle that moves up and down is passed and so that this breach mode consistent and being supported by presser bar 18 with the needle downing position of eedle.
(up-down mechanism and motor of sewing machine)
Up-down mechanism; Be configured in the inboard of chain-drive section, and have: driven and going up axle 12, keep the shank of eedle, the rotary driving force that will go up axle 12 to convert the reciprocal driving force that moves up and down in the bottom and passing to the well-known transmission mechanism of shank along the Y direction configuration by motor of sewing machine rotation.And, on last axle 12, be useful on the belt pulley that hangs with synchronous belt 13 14 of the 43 transmission rotary driving forces of cloth pushing shaft up and down of the cloth-feeding device of stating backward 40 in the fixed installation of the end of vertical main body section 22 sides.This synchronous belt 13 is hung in the vertical main body section 22 with the state that what tilt with respect to Z-direction.
Motor of sewing machine is arranged on the inboard, end of the vertical main body section side of chain-drive section, and rotates to drive and go up axle 12.Motor of sewing machine also can directly link its output shaft with an end of last axle 12, also can link through the transmission mechanism of gear etc.
(rotary shuttle mechanism)
The configuration of corresponding full rotation shuttle 31, as shown in Figure 1, in base plate 21, disposed rotary shuttle shaft 32 abreast in the middle position and the Y direction of X-direction.In addition, rotary shuttle shaft 32, with full rotation shuttle 31 opposition side ends, from the rotary driving force of gear mechanism 60 input full rotation shuttles 31.
In addition, full rotation shuttle 31 comprises outer rotating shuttle 31a with above-mentioned wedge angle and rotation and the interior rotating shuttle 31b that is flush-mounted in the outer rotating shuttle 31a.
Outer rotating shuttle 31a is applied rotary driving force and is rotated by rotary shuttle shaft 32.
Interior rotating shuttle 31b is because of an end engages the rotation that has been limited around circumferencial direction with the other end of the interior rotating shuttle presser feet 33 that is fixed on base plate 21.Interior rotating shuttle presser feet 33, the one of which end, be base end part be installed in than after the end of work feed seat 42 sides of the horizontal cloth pushing shaft 46 stated by the opposition side of vertical main body section 22, and can slide mobile along base plate 21.In addition, interior rotating shuttle presser feet 33, from one end to the other side crooked, this other end engages with the end of vertical main body section 22 opposition sides of interior rotating shuttle 31b.Therefore; The operator of Sewing machines 10; Unclamp screw 33a from the below of base plate 21; Move the interior rotating shuttle presser feet 33 that is formed with slotted hole 33b along the gathering sill 21a that is formed at base plate 21 to X-direction and regulate interior rotating shuttle presser feet 33 installation sites with respect to base plate 21, rotating shuttle 31b is with respect to the engaging angle of base plate 21 in can regulating with this.
(cloth-feeding device)
Cloth-feeding device 40; Like Fig. 2 and shown in Figure 3, have: from through hole 11a haunt needle plate 11 upper surfaces and to prescribed direction carry cloth feed dog 41, keep feed dog 41 work feed seat 42, from last axle 12 transmit the cloth pushing shaft up and down 43 that is used for along the vertical direction (Z-direction) and moves back and forth the rotary driving force of work feed seat 42, with eccentric cam 44 up and down the rotary driving force of cloth pushing shaft 43 convert into the reciprocal driving force of above-below direction and the eccentric ratio 45 that transmits to work feed seat 42, from cloth pushing shaft 43 up and down transmit be used to make work feed seat 42 along the horizontal cloth pushing shaft 46 of the reciprocal reciprocal rotary driving force of cloth feeding direction (X-direction), with the reciprocal rotary driving force of horizontal cloth pushing shaft 46 convert the reciprocal driving force of cloth feeding direction and the horizontal work feed arm 47 that transmits to work feed seat 42 into, the rotary driving force of cloth pushing shaft 43 converts reciprocal rotary driving force into and to the transmission mechanism 48 of horizontal cloth pushing shaft 46 transmission up and down.
In addition, the other end of cloth pushing shaft 43 extends to the below of needle plate 11 up and down, on this other end, is installed with eccentric cam 44.And an end of eccentric ratio 45 is through this eccentric cam 44 and cloth pushing shaft 43 bindings up and down.This eccentric ratio 45, one of which end can be with the relative rotation link with the eccentric cam 44 of circle, and its other end can be rotationally links with an end of work feed seat 42.Because the connecting end portion of this eccentric ratio 45 and work feed seat 42 is positioned at and the roughly top of the connecting end of cloth pushing shaft 43 up and down; So when up and down cloth pushing shaft 43 drives with full rotation, with the stroke of its offset twice one end of work feed seat 42 is applied the driving force that moves back and forth along the vertical direction by eccentric cam 44.
In addition, the other end of cloth pushing shaft 43 up and down, its front end, promptly up and down the end of cloth pushing shaft 43 work feed seats 42 sides be formed on than after the leaning on of horizontal cloth pushing shaft 46 front ends stated indulge main body section 22 sides (with reference to Fig. 1, Fig. 8).That is, Fig. 1 and cloth pushing shaft up and down 43 shown in Figure 8, its left end is positioned at the right side of Fig. 1 and horizontal cloth pushing shaft 46 left ends shown in Figure 8.
And, near an end of vertical main body section 22 sides of horizontal cloth pushing shaft 46, be provided with transmission mechanism 48.Fig. 4 is the stereogram that expression is used to regulate the cloth feed amount governor motion 52 of the reciprocal anglec of rotation of transmitting to the horizontal cloth pushing shaft with transmission mechanism 48 46.According to Fig. 3 and Fig. 4 transmission mechanism 48 is described.
Cloth feed amount governor motion 52 has: connect a pair of first connecting rod body 53 of the other end of eccentric ratio 50 and swing arm 51, to a pair of second connecting rod body 54 of the vibration-direction of the other end of any direction guiding eccentric ratio 50, regulate the support frame component 55 of the channeling direction that forms by second connecting rod body 54 and be used for this adjusting and the not shown adjusting knob of support frame component 55 to any direction rotation.
Above-mentioned first connecting rod body 53, one of which end can be rotationally link with eccentric ratio 50 the other end, and its other end can be rotationally links with the end of shaking of swing arm 51.
Second connecting rod body 54, one of which end and eccentric ratio 50 the other end link, and its other end is connected with the pivoting end of support frame component 55.
Support frame component 55, its base end part can be supported in the body frame 20 rotationally, and its pivoting end can be rotationally links with the other end of second connecting rod body 54.And, the rotation linking part of above-mentioned each structure of cloth feed amount governor motion 52, its turning cylinder is all towards Y direction.
Adjusting knob, its manual operation unit to be protruding from the outside state setting of body frame 20, and engage with support frame component 55 with the end of manual operation unit opposition side.And adjusting knob utilizes manual operation unit to apply rotating operation, corresponding to its direction to positive and negative rotation, can the pivoting end of support frame component 55 be rotated to clockwise direction or counter clockwise direction.
In above-mentioned cloth feed amount governor motion 52, first connecting rod body 53 and second connecting rod body 54 at the consistent state of its each length direction, be each connecting rod body 53,54 state with lucky coincidence, be that eccentric ratio 50 is in not the state to swing arm 51 transmission driving forces.At this moment, owing to horizontal cloth pushing shaft 46 is not rotated, so be in the state that does not carry out work feed.Therefore; So that the mode that each connecting rod body 53,54 overlaps; Support frame component 55 is rotated the neutral position of the position of adjusting as this support frame component 55, utilize adjusting knob, support frame component 55 is rotated to clockwise direction or counter clockwise direction; With this, so that cloth feed amount that should rotational angle is applied the driving force that is used to carry out forward or reverse work feed to horizontal cloth pushing shaft 46.
Horizontal cloth pushing shaft 46 rotatably is supported in the base plate 21 along Y direction, and is configured in the cloth cloth feeding direction downstream (left of Fig. 2 and Fig. 3) of above-mentioned rotary shuttle shaft 32.Through above-mentioned cloth feed amount governor motion 52, apply reciprocal rotating drive power from an end of vertical fuselage 22 sides of 43 pairs of these horizontal cloth pushing shafts 46 of cloth pushing shaft up and down, through horizontal work feed arm 47 from the other end to the reciprocal driving force of work feed seat 42 transmissions along X-direction.
The be fixed end of needle plate 11 sides that are attached at horizontal cloth pushing shaft 46 of horizontal work feed arm 47, its base end part, it shakes the end and links with state and the work feed seat 42 towards the top roughly.
With this, work feed seat 42 is applied in the reciprocal driving force of above-below direction from the one of which end, is applied in the reciprocal driving force of cloth feeding direction with same period from the other end, and, through synthetic these reciprocal driving forces, can carry out oval moving along the X-Z plane.Feed dog 41 also carries out oval motion along with this work feed seat 42, and when passing through the upper area of this oval movement locus, the leading section of feed dog 41 protrudes to the top from the through hole 11a of needle plate 11, carries cloth.
In addition, work feed seat 42, end of lower shaft 43 sides is to be mounted to the state of indulging fuselage 22 lateral bendings bent (biasing) a little on it.
(gear mechanism)
These driving gears 61 are meshing with each other with driven gear 62 and the number of teeth of driving gear 61 is set to the twice of driven gear 62.Therefore, gear mechanism 60, the speed of cloth pushing shaft 43 twices made the opposite direction rotation of full rotation shuttle 31 to diaxon 12,43 about axle 12 reached more than 32 through rotary shuttle shaft.
(action specification of Sewing machines)
The Sewing machines 10 that said structure constitutes when motor of sewing machine begins rotation and drives, drives with the rotating speed rotation corresponding to motor of sewing machine rotation power output and to go up axle 12, and up-down mechanism is move up and down eedle with the identical frequency of last axle 12 rotating speeds.
On the other hand, the rotary driving force of last axle 12 is delivered to the cloth pushing shaft up and down 43 of cloth-feeding device 40 through synchronous belt 13, and cloth pushing shaft 43 is to be rotated driving with the equidirectional and identical rotary speed of last axle up and down.Cloth pushing shaft 43 up and down, through eccentric cam 44 and eccentric ratio 45 work feed seat 42 and feed dog 41 synchronously moved up and down with moving up and down of eedle.
In addition, the rotary driving force of cloth pushing shaft 43 becomes reciprocal rotating drive power and passes to horizontal cloth pushing shaft 46 through transmission mechanism 48 up and down.With this, horizontal cloth pushing shaft 46 makes work feed seat 42 and feed dog 41 move back and forth along cloth feeding direction synchronously with moving up and down of eedle through horizontal work feed arm 47.
With this, cloth-feeding device 40 synthetic move up and down and applies this driving force along the reciprocating driving force of cloth feeding direction and to feed dog 41, consequently can make feed dog 41 do oval motion.And feed dog protrudes to the top from the through hole 11a of needle plate 11 when the top through oval movement locus, carries the cloth of being pushed by presser feet 19 from the below along cloth feeding direction.
In addition; Can regulate the travel forward cloth feed amount governor motion 52 of phase place of cloth feeding direction owing on cloth-feeding device 40, be provided with; So with its adjusting knob of manual operation; Can set the work feed spacing of forward stitch direction (left of Fig. 2 and Fig. 3) or contrary cloth feeding direction neatly, also can spacing be set at 0 in addition.
Therefore, utilize cloth-feeding device 40 to move up and down and carry cloth synchronously with the work feed spacing that is set and eedle.
In addition; The rotary driving force of cloth pushing shaft 43 is passed to rotary shuttle shaft 32 and full rotation shuttle 31 through gear mechanism 60, therefore up and down; Full rotation shuttle 31 is with the rotary speed of the twice that moves up and down with respect to eedle, to last axle 12 and up and down cloth pushing shaft 43 opposite directions be rotated.
Utilize the co-operating of up-down mechanism, cloth-feeding device 40 and rotary shuttle mechanism 30, full rotation shuttle 31 is caught sutures and is twined bottom line when eedle moves up and down, and with the eedle spacing work feed to set synchronously, thereby makes.
(the effect explanation of embodiment)
The A2 of Fig. 5 representes the motion track of the forward stitch direction end of downstream side of feed dog 41, and B2 representes the motion track of the forward stitch direction upstream-side-end of feed dog 41.In addition, the transverse axis among the figure is represented the height above the needle plate.
Because on above-mentioned Sewing machines 10, cloth pushing shaft 43 up and down is configured in the forward stitch direction upstream side of horizontal cloth pushing shaft 46, so the displacement that moves up and down of feed dog 41, the motion track B2 of its upstream-side-end is bigger than the motion track A2 in downstream.
On the other hand; Presser feet 19; Because its forward stitch direction downstream at position of centre of gravity (length direction centre position) pushed support by presser bar 18, thus move up and down when feed dog 41, when reducing displacement that its end of downstream side moves up and down; Presser feet 19 can be followed the motion of feed dog 41 upper ends easily, and can suppress the generation that it takeoffs.That is,, can carry sewn object reliably according to the spacing of suitable setting with this.
In addition, owing to can suppress takeofing of presser feet 19,, can avoid when work feed, producing the situation of returning, also can correctly carry out work feed from this viewpoint so upper dead center position that will feed dog 41 upstream-side-end is set in the high position.
In addition, because through axle 12 on synchronous belt 13 interlocks and cloth pushing shaft 43 up and down, so there is no need between it, to be provided with gear, correspondence dryingization (not using fluid lubricant) easily.In addition, if utilize the synchronous belt interlock each 12,43, compare during then with gear drive, can realize simple structureization, reduce number of parts, saving is provided with the space.And, when utilizing synchronous belt 13 to realize axle 12, can realize going up spools 12 and the homodromal interlock of same speed of cloth pushing shaft 43 up and down with simpler structure with cloth pushing shaft 43 interlocks up and down.
In addition and since up and down work feed seat 42 side ends of cloth pushing shaft 43 be set at horizontal cloth pushing shaft 46 work feed seats 42 side ends near vertical fuselage 22 sides, so the operator to the loading and unloading of full rotation shuttle 31 parts become easy.In addition; Because cloth pushing shaft 43 is configured in the sewn object throughput direction upstream side of horizontal cloth pushing shaft 46 up and down; So; When the operator when sewn object throughput direction upstream side is operated, can make work feed seat 42 side ends that rotate fully and the dangerous cloth pushing shaft up and down 43 of high temperatureization arranged away from the operator.
In addition; Because the interior rotating shuttle presser feet 33 of rotating shuttle 31b is configured in the opposition side near vertical fuselage 22 of work feed seat 42 side ends of cloth pushing shaft 43 up and down in will pushing; So the operator to the loading and unloading of full rotation shuttle 31 parts become easily, and rotating shuttle presser feet 33 in easily regulating.
[second embodiment]
Below, the second embodiment of the present invention is described.In addition, in the present embodiment, used identical symbol with the identical structure of above-mentioned first embodiment, and omitted its repeat specification.
On the Sewing machines 100 of present embodiment; With the difference of above-mentioned Sewing machines 10 be; The other end of the cloth pushing shaft up and down 430 of belt pulley 15 at one end has been installed; Its front end, the i.e. end of work feed seat 420 sides of cloth pushing shaft 430 up and down are positioned to lean on than the vertical fuselage 22 opposition side ends of full rotation shuttle 31 and indulge fuselage 22 1 sides (with reference to Fig. 9).That is, cloth pushing shaft up and down 430 shown in Figure 9, the end of its work feed seat 420 sides is positioned at the right side of full rotation shuttle 31 left ends on Fig. 9.In addition, work feed seat 420 is with the state installation to vertical fuselage 22 lateral bendings bent (biasing) of the end of cloth pushing shaft 430 sides up and down.With this, the operator becomes easier to the loading and unloading of full rotation shuttle 31 parts of Sewing machines 100.Therefore, can prevent the operator with because wheel then have the leading section (left part of Fig. 9) of the cloth pushing shaft up and down 430 of High Temperature to contact.
Claims (4)
1. the cloth-feeding device of a Sewing machines is characterized in that, has:
The work feed seat, it is kept for carrying the feed dog of the sewn object on the needle plate;
Presser feet, it is pushed from the top and keeps said sewn object, and is supported on the position of leaning on the cloth feeding direction downstream than the centre position of its length direction a little;
Motor of sewing machine, it is arranged on the inboard, end of the vertical main body section side of chain-drive section, and the rotation drive arrangements is in the upward axle of the inboard of this chain-drive section;
Cloth pushing shaft up and down, it can be supported in the base plate rotatably, applies the driving force of shaking of above-below direction through wheel then to said work feed seat;
Synchronous belt; Its hang up be fixedly installed in said on the belt pulley of belt pulley and the vertical main body section side end that is fixedly installed in said up and down cloth pushing shaft of vertical main body section side end of axle, the rotary driving force of the full rotation of going up axle that will be driven by said motor of sewing machine rotation is to this cloth pushing shaft transmission up and down;
First eccentric cam, it is fixedly installed in said the other end of cloth pushing shaft up and down, the said rotary driving force of cloth pushing shaft is up and down converted into the reciprocal driving force of above-below direction;
First eccentric ratio, it transmits the reciprocal driving force of said above-below direction to said work feed seat;
Horizontal cloth pushing shaft, it can be supported in the said base plate rotatably, is clipped in the middle rotary shuttle shaft and be configured in the opposition side of said up and down cloth pushing shaft and apply the driving force of shaking of cloth feeding direction to said work feed seat;
Second eccentric cam, it is fixedly installed on the said cloth pushing shaft up and down;
Second eccentric ratio, the one of which end is attached on the said cloth pushing shaft up and down via said second eccentric cam, and the said rotary driving force of cloth pushing shaft is up and down converted into reciprocal rotary driving force and is delivered to said horizontal cloth pushing shaft;
The cloth feed amount governor motion; Its link said second eccentric ratio the other end and swing arm shake the end; And the level of regulating said horizontal cloth pushing shaft shakes amplitude, and said swing arm is fixedly installed on the said horizontal cloth pushing shaft and is that the center is shaken with this horizontal cloth pushing shaft; And
Horizontal work feed arm, the end of its fixedly connected needle plate side at said horizontal cloth pushing shaft converts the reciprocal rotary driving force that utilizes said second eccentric ratio to be delivered to said horizontal cloth pushing shaft into cloth feeding direction reciprocal driving force and to the transmission of said work feed seat,
And, the reciprocal driving force through said above-below direction and the reciprocal driving force of said cloth feeding direction synthetic, and make said feed dog carry out oval motion, thus carry out the conveying of sewn object,
Said cloth pushing shaft up and down is disposed at the upstream side that leans on the throughput direction of said sewn object than said horizontal cloth pushing shaft.
2. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that: the said end of the work feed seat side of cloth pushing shaft up and down is positioned to lean on than the end of the work feed seat side of said horizontal cloth pushing shaft and indulges main body section one side.
3. the cloth-feeding device of Sewing machines according to claim 2 is characterized in that: the said end of the work feed seat side of cloth pushing shaft up and down is positioned to lean on than the end of the vertical main body section opposition side of the rotating shuttle that links with said rotary shuttle shaft and indulges main body section one side.
4. the cloth-feeding device of Sewing machines according to claim 1; It is characterized in that: on said rotary shuttle shaft and end vertical main body section opposition side; Be provided with the rotating shuttle that the outer rotating shuttle by interior rotating shuttle and rotation constitutes; Opposite side lean on vertical main body section than the end of the work feed seat side of said up and down cloth pushing shaft is fixed with the interior rotating shuttle presser feet of pushing said interior rotating shuttle.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004275729 | 2004-09-22 | ||
| JP2004-275729 | 2004-09-22 | ||
| JP2004275729 | 2004-09-22 | ||
| JP2005-123492 | 2005-04-21 | ||
| JP2005123492 | 2005-04-21 | ||
| JP2005123492A JP4624169B2 (en) | 2004-09-22 | 2005-04-21 | Sewing machine feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752321A CN1752321A (en) | 2006-03-29 |
| CN1752321B true CN1752321B (en) | 2012-01-11 |
Family
ID=36202003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101063653A Active CN1752321B (en) | 2004-09-22 | 2005-09-22 | Cloth feeding device for sewing machine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4624169B2 (en) |
| KR (1) | KR101266348B1 (en) |
| CN (1) | CN1752321B (en) |
| DE (1) | DE102005045278A1 (en) |
| TW (1) | TWI374208B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007007828U1 (en) | 2007-06-02 | 2008-10-09 | Quithell Kunststofftechnik Gmbh | Expansion joint strip for screed floors |
| JP2009142411A (en) * | 2007-12-13 | 2009-07-02 | Brother Ind Ltd | Sewing machine |
| EP2143854B1 (en) | 2008-07-07 | 2015-11-18 | Quithell Kunststofftechnik GmbH | Elongation splice strips for screed floors |
| JP2010246839A (en) * | 2009-04-20 | 2010-11-04 | Juki Corp | Sewing machine |
| DE202010003965U1 (en) | 2010-03-19 | 2011-08-03 | Quithell Kunststofftechnik Gmbh | Expansion joint strips or edge insulation strips |
| CN104120548B (en) * | 2011-07-25 | 2016-05-11 | 兄弟工业株式会社 | The control method of sewing machine and sewing machine |
| JP5940307B2 (en) * | 2012-01-18 | 2016-06-29 | Juki株式会社 | Sewing machine feed adjustment mechanism |
| CN103469498B (en) * | 2013-09-12 | 2015-04-08 | 杰克缝纫机股份有限公司 | Large stitch feeding mechanism for sewing machine |
| KR20170017185A (en) | 2015-08-05 | 2017-02-15 | 주식회사 골든아타치먼트 | Object transfer apparatus of sewing machine |
| CN111926471B (en) * | 2019-05-13 | 2023-09-05 | Juki株式会社 | Needle feeding sewing machine |
| JP7262323B2 (en) * | 2019-06-24 | 2023-04-21 | Juki株式会社 | Sewing machine and adjustment method |
| CN114466953A (en) * | 2019-10-01 | 2022-05-10 | 威陛马科股份公司 | Fabric feeding device for sewing machine |
| CN115182111B (en) * | 2021-04-02 | 2024-06-18 | 杰克科技股份有限公司 | Modularized sewing machine |
| CN115182104A (en) * | 2021-04-02 | 2022-10-14 | 杰克科技股份有限公司 | Feeding thread hooking mechanism capable of being flexibly adjusted and sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297078A (en) * | 1999-11-22 | 2001-05-30 | 重机公司 | Feed adjusting device for sewing machine |
| CN1298973A (en) * | 1999-12-07 | 2001-06-13 | 重机公司 | Feeding device for sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60155481U (en) * | 1984-03-27 | 1985-10-16 | 株式会社 廣瀬製作所 | full rotation hook of sewing machine |
| JP2897308B2 (en) * | 1990-01-11 | 1999-05-31 | ブラザー工業株式会社 | sewing machine |
| JPH04211754A (en) * | 1990-03-19 | 1992-08-03 | Mitsubishi Electric Corp | Cam mechanism and sewing machine therewith |
-
2005
- 2005-04-21 JP JP2005123492A patent/JP4624169B2/en active Active
- 2005-09-21 KR KR1020050087711A patent/KR101266348B1/en active IP Right Grant
- 2005-09-22 TW TW094132818A patent/TWI374208B/en active
- 2005-09-22 CN CN2005101063653A patent/CN1752321B/en active Active
- 2005-09-22 DE DE102005045278A patent/DE102005045278A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297078A (en) * | 1999-11-22 | 2001-05-30 | 重机公司 | Feed adjusting device for sewing machine |
| CN1298973A (en) * | 1999-12-07 | 2001-06-13 | 重机公司 | Feeding device for sewing machine |
Non-Patent Citations (4)
| Title |
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| JP平3-207389A 1991.09.10 |
| JP昭36-11447 1961.05.11 |
| JP昭60-155481U 1985.10.16 |
| JP特开平4-211754A 1992.08.03 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101266348B1 (en) | 2013-05-22 |
| JP2006116290A (en) | 2006-05-11 |
| KR20060051480A (en) | 2006-05-19 |
| CN1752321A (en) | 2006-03-29 |
| DE102005045278A1 (en) | 2006-05-04 |
| TW200619450A (en) | 2006-06-16 |
| TWI374208B (en) | 2012-10-11 |
| JP4624169B2 (en) | 2011-02-02 |
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