CN1752321A - Cloth feeding device for sewing machine - Google Patents
Cloth feeding device for sewing machine Download PDFInfo
- Publication number
- CN1752321A CN1752321A CNA2005101063653A CN200510106365A CN1752321A CN 1752321 A CN1752321 A CN 1752321A CN A2005101063653 A CNA2005101063653 A CN A2005101063653A CN 200510106365 A CN200510106365 A CN 200510106365A CN 1752321 A CN1752321 A CN 1752321A
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- Prior art keywords
- cloth
- pushing shaft
- cloth pushing
- work feed
- shaft
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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 and to transmit its driving force to each one, 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) from motor of sewing machine as main drive source.And, in head of sewing machine portion side, by 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, by 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.By 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 by connect mechanism from cloth pushing shaft and rotary shuttle shaft or trunnion axis binding up and down.From effectively utilizing the viewpoint of Sewing machines base plate interior space or minimizing number of spare parts, wish 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 downstream configuration cloth pushing shaft 103 (for example, with reference to patent documentation 1) up and down at sewn object.
In addition, cloth pushing shaft 103 up and down, are sewed the machine motor driving with the speed rotation with last axle is equidirectional, and are converted to the reciprocal driving of above-below direction by eccentric cam 104, 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 is converted to back and forth shaking of horizontal direction, and utilizes and can regulate the well-known transmission mechanism of reciprocal scope 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 by 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 difference.The A1 of Fig. 7 has shown the motion track of feed dog 105 cloth feeding direction end of downstream side, and B1 represents 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, close cloth pushing shaft 103 up and down is 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 that needle plate protrudes, 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 present invention also aims to simplify the lubriation material that cloth pushing shaft rotating mechanism up and down and not needing is 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, by wheel then to the work feed seat apply the cloth pushing shaft up and down that shakes driving force of above-below direction, rotary shuttle shaft is clipped in the middle and is 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, shake and synthesizing that cloth feeding direction shakes by above-below direction, 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 than the upstream side of horizontal cloth pushing shaft by the throughput direction of sewn object.
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 by 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 described end of the work feed seat side of cloth pushing shaft up and down is positioned at end than the work feed seat side of described horizontal cloth pushing shaft by indulging main body section one side.
In said structure, will be configured in the end of 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 described up and down cloth pushing shaft is positioned at end than the vertical main body section opposition side of the rotating shuttle that links with described rotary shuttle shaft by indulging main body section one side.
In said structure, will be configured in the end of 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, has 1 described same structure with the present invention, and adopt following structure, promptly, on described 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 described in the interior rotating shuttle presser feet of rotating shuttle, be fixed on work feed seat end than described cloth pushing shaft up and down by indulging an opposite side of 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 end than the work feed seat side of cloth pushing shaft up and down by indulging the opposition side of main body section.
(invention effect)
According to the present invention 1 because up and down cloth pushing shaft is configured in than the upstream side of horizontal cloth pushing shaft by cloth feeding direction, 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,, the motion of feed dog upper end can be easily followed, and the generation of takeofing can be suppressed to be the presser feet that fulcrum is pressed and supports by the cloth feeding direction downstream than its position of centre of gravity.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 by 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 spare parts, saving are provided with the space.
In addition, when the interlock realized with synchronous belt and last axle, can realize on this spool and the interlock of the equidirectional rotation of same speed of cloth pushing shaft up and down with more easy structure.
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 by 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 than the upstream side of horizontal cloth pushing shaft by the sewn object throughput direction 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 end than the work feed seat side of cloth pushing shaft up and down by indulging 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 represents that side by side feed dog is just sending the curve map of the motion track of the motion track of direction end of downstream side and upstream-side-end.
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, 14,15-belt pulley, 31-full rotation shuttle, the outer rotating shuttle of 31a-, rotating shuttle in the 31b-, rotating shuttle presser feet in the 32-rotary shuttle shaft, 33-, the 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, describe embodiments of the invention in detail with reference to Fig. 1～Fig. 5.Fig. 1 is the just structure chart of overlooking in Sewing machines 10 base plate 21 described later of the embodiment of the invention 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: the not shown up-down mechanism that eedle is moved up and down, not shown motor of sewing machine as its drive source, bottom line is wrapped in rotary shuttle mechanism 30 in the suture that passes suture on the eedle by full rotation shuttle 31, consistent with moving up and down of eedle and carry cloth-feeding device 40 on the needle plate 11 as the cloth of sewn object, transmit the gear mechanism 60 of rotary driving force to rotary shuttle mechanism 30 from the cloth pushing shaft up and down 43 of cloth-feeding device 40, push and keep the presser feet 19 of the cloth on the needle plate 11 from the top, with the body frame 20 that supports above-mentioned each structure.
(body frame)
In addition, base plate 21 is under the state that Sewing machines 10 is arranged on the horizontal plane, and its length direction is a horizontal direction.And, in the following description, 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-axis 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 end with vertical main body section 22 opposition sides.On this needle plate 11, be formed with the through hole 11a of pin hole that eedle passes and the feed dog 41 of haunting cloth-feeding device 40 described later.
Presser feet 19 is configured in the pin hole of needle plate 11 and the position directly over the through hole 11a, and is pushed downwards by the presser bar 18 that supports this presser feet 19.This presser feet 19, and is supported on than the centre position of presser feet 19 length directions a little by the position in cloth feeding direction downstream (left of Fig. 3) along being configured on the needle plate 11 under the state of X-direction at its length direction.In addition, presser feet 19 is by linking along the fulcrum pin of the Y direction bottom with presser bar 18, and how much up and down the both ends that can make presser feet 19 direction are shaken.
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: be sewed that machine motor rotation drives and going up axle 12, keep the shank of eedle, the rotary driving force that will go up axle 12 to be converted to 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.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 by 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, has been disposed rotary shuttle shaft 32 in the middle position and the Y direction of X-direction abreast.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 the outer rotating shuttle 31a with above-mentioned wedge angle and rotation and is flush-mounted in the interior interior rotating shuttle 31b of outer rotating shuttle 31a.
Outer rotating shuttle 31a is applied rotary driving force and is rotated by rotary shuttle shaft 32.
(cloth-feeding device)
Cloth-feeding device 40, as shown in Figures 2 and 3, have: haunt needle plate 11 upper surfaces and carry the feed dog 41 of cloth to prescribed direction from through hole 11a, the work feed seat 42 that keeps feed dog 41, be used for along the vertical direction the cloth pushing shaft up and down 43 that (Z-direction) moves back and forth the rotary driving force of work feed seat 42 from last axle 12 transmission, to up and down with eccentric cam 44, the rotary driving force of cloth pushing shaft 43 is converted to the reciprocal driving force of above-below direction and the eccentric ratio 45 that transmits to work feed seat 42, transmit from cloth pushing shaft 43 up and down and to be used to make the horizontal cloth pushing shaft 46 of work feed seat 42 along the reciprocal reciprocal rotary driving force of cloth feeding direction (X-direction), the horizontal work feed arm 47 that the reciprocal rotary driving force of horizontal cloth pushing shaft 46 is converted to the reciprocal driving force of cloth feeding direction and transmits to work feed seat 42, the transmission mechanism 48 that the rotary driving force of cloth pushing shaft 43 up and down is converted to reciprocal rotary driving force and transmits to horizontal cloth pushing shaft 46.
In addition, the other end of cloth pushing shaft 43 extends to the below of needle plate 11 up and down, is installed with eccentric cam 44 on this other end.And an end of eccentric ratio 45 is by this eccentric cam 44 and cloth pushing shaft 43 bindings up and down.This eccentric ratio 45, one 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 along the vertical direction the driving force that moves back and forth 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 horizontal cloth pushing shaft 46 front ends described later by indulging 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 46 with transmission mechanism 48.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 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 end and eccentric ratio 50 the other end link, and its other end is connected with the pivoting end of support frame component 55.
Adjusting knob, its manual operation unit to be protruding from the state setting of body frame 20 outsides, 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, the pivoting end of support frame component 55 can 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 state of its each length direction unanimity, 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.By 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, by 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 end, is applied in the reciprocal driving force of cloth feeding direction with same period from the other end, and, by synthetic these reciprocal driving forces, can carry out oval motion along 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 upward 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 bending songs (biasing) a little on it.
(gear mechanism)
Gear mechanism 60 has: be fixedly installed in cloth-feeding device driving gear on the cloth pushing shaft 43 61 and be fixedly installed in driven gear 62 on the rotary shuttle shaft 32 of rotary shuttle mechanism 30 about in the of 40.
These driving gears 61 and driven gear 62 Xiang Hu Nogami merge 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 by 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 moves up and down eedle with the frequency identical with 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 by 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, by 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 by 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 by 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 upward from the through hole 11a of needle plate 11 when the top by 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 spacing can 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 by 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 represents the motion track of the forward stitch direction end of downstream side of feed dog 41, and B2 represents 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 support is pushed by presser bar 18 in its forward stitch direction downstream at position of centre of gravity (length direction centre position), so when feed dog 41 moves up and down, 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 by 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 spare parts, saving is provided with the space.And, utilizing synchronous belt 13 to realize axle 12 and up and down during cloth pushing shaft 43 interlocks, can realize going up spools 12 and the homodromal interlock of same speed of cloth pushing shaft 43 up and down with simpler structure.
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 easily.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 of cloth pushing shaft up and down 43 that rotate fully and high temperature danger 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, the structure identical with above-mentioned first embodiment used identical symbol, and omits 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 at vertical fuselage 22 opposition side ends than full rotation shuttle 31 by indulging 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 bending songs (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 (5)
1. the cloth-feeding device of a Sewing machines has:
Be kept for carrying the feed dog of the sewn object on the needle plate the work feed seat,
By wheel then to described work feed seat apply above-below direction the cloth pushing shaft up and down that shakes driving force,
Rotary shuttle shaft is clipped in the middle and be configured in described cloth pushing shaft up and down opposition side and to described work feed seat apply cloth feeding direction the horizontal cloth pushing shaft that shakes driving force,
The level of the horizontal cloth pushing shaft of adjusting is shaken the work feed governor motion of amplitude;
And, shake and synthesizing that cloth feeding direction shakes by described above-below direction, and make described feed dog carry out oval motion, thereby carry out the conveying of sewn object, it is characterized in that:
Described cloth pushing shaft up and down is disposed at than the upstream side of described horizontal cloth pushing shaft by the throughput direction of sewn object.
2. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that: described cloth pushing shaft up and down, give the full rotation driving force by synchronous belt.
3. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that: the described end of the work feed seat side of cloth pushing shaft up and down is positioned at end than the work feed seat side of described horizontal cloth pushing shaft by indulging main body section one side.
4. the cloth-feeding device of Sewing machines according to claim 3 is characterized in that: the described end of the work feed seat side of cloth pushing shaft up and down is positioned at end than the vertical main body section opposition side of the rotating shuttle that links with described rotary shuttle shaft by indulging main body section one side.
5. the cloth-feeding device of Sewing machines according to claim 1, it is characterized in that: on described 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 described in the interior rotating shuttle presser feet of rotating shuttle, be fixed on end than the described work feed seat of cloth pushing shaft up and down by indulging an opposite side of main body section.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004275729 | 2004-09-22 | ||
| JP2004275729 | 2004-09-22 | ||
| JP2004-275729 | 2004-09-22 | ||
| JP2005123492A JP4624169B2 (en) | 2004-09-22 | 2005-04-21 | Sewing machine feeder |
| JP2005-123492 | 2005-04-21 | ||
| JP2005123492 | 2005-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752321A true CN1752321A (en) | 2006-03-29 |
| CN1752321B 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) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864645A (en) * | 2009-04-20 | 2010-10-20 | Juki株式会社 | Cloth feeding device of sewing machine |
| CN101457451B (en) * | 2007-12-13 | 2012-09-26 | 兄弟工业株式会社 | Sewing machine |
| CN103469498A (en) * | 2013-09-12 | 2013-12-25 | 新杰克缝纫机股份有限公司 | Large stitch feeding mechanism for sewing machine |
| CN104120548A (en) * | 2011-07-25 | 2014-10-29 | 兄弟工业株式会社 | Sewing machine and method for controlling sewing machine |
| CN114466953A (en) * | 2019-10-01 | 2022-05-10 | 威陛马科股份公司 | Fabric feeding device for sewing machine |
| WO2022206003A1 (en) * | 2021-04-02 | 2022-10-06 | 杰克科技股份有限公司 | Flexibly adjustable feeding and thread hooking mechanism and sewing machine |
| WO2022206005A1 (en) * | 2021-04-02 | 2022-10-06 | 杰克科技股份有限公司 | Feed lifting thread hooking module for sewing machine |
Families Citing this family (7)
| 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 |
| PL2143854T3 (en) | 2008-07-07 | 2016-03-31 | Quithell Kunststofftechnik Gmbh | Elongation splice strips for screed floors |
| DE202010003965U1 (en) | 2010-03-19 | 2011-08-03 | Quithell Kunststofftechnik Gmbh | Expansion joint strips or edge insulation strips |
| JP5940307B2 (en) * | 2012-01-18 | 2016-06-29 | Juki株式会社 | Sewing machine feed adjustment mechanism |
| 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 |
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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 |
| CN1117896C (en) * | 1999-11-22 | 2003-08-13 | 重机公司 | Feed adjusting device for sewing machine |
| JP2001162076A (en) * | 1999-12-07 | 2001-06-19 | Juki Corp | Fabric feeding device for sewing machine |
-
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 DE DE102005045278A patent/DE102005045278A1/en not_active Ceased
- 2005-09-22 TW TW094132818A patent/TWI374208B/en active
- 2005-09-22 CN CN2005101063653A patent/CN1752321B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457451B (en) * | 2007-12-13 | 2012-09-26 | 兄弟工业株式会社 | Sewing machine |
| CN101864645A (en) * | 2009-04-20 | 2010-10-20 | Juki株式会社 | Cloth feeding device of sewing machine |
| CN101864645B (en) * | 2009-04-20 | 2013-10-09 | Juki株式会社 | Cloth feeding device of sewing machine |
| CN104120548A (en) * | 2011-07-25 | 2014-10-29 | 兄弟工业株式会社 | Sewing machine and method for controlling sewing machine |
| CN103469498A (en) * | 2013-09-12 | 2013-12-25 | 新杰克缝纫机股份有限公司 | Large stitch feeding mechanism for sewing machine |
| CN114466953A (en) * | 2019-10-01 | 2022-05-10 | 威陛马科股份公司 | Fabric feeding device for sewing machine |
| WO2022206003A1 (en) * | 2021-04-02 | 2022-10-06 | 杰克科技股份有限公司 | Flexibly adjustable feeding and thread hooking mechanism and sewing machine |
| WO2022206005A1 (en) * | 2021-04-02 | 2022-10-06 | 杰克科技股份有限公司 | Feed lifting thread hooking module for sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4624169B2 (en) | 2011-02-02 |
| CN1752321B (en) | 2012-01-11 |
| TWI374208B (en) | 2012-10-11 |
| TW200619450A (en) | 2006-06-16 |
| DE102005045278A1 (en) | 2006-05-04 |
| KR101266348B1 (en) | 2013-05-22 |
| JP2006116290A (en) | 2006-05-11 |
| KR20060051480A (en) | 2006-05-19 |
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