CN103374794B - cloth feeding mechanism of sewing machine - Google Patents
cloth feeding mechanism of sewing machine Download PDFInfo
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- CN103374794B CN103374794B CN201210119290.2A CN201210119290A CN103374794B CN 103374794 B CN103374794 B CN 103374794B CN 201210119290 A CN201210119290 A CN 201210119290A CN 103374794 B CN103374794 B CN 103374794B
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Abstract
A cloth feeding mechanism of a sewing machine is provided with a first eccentric cam and a second eccentric cam, wherein the first eccentric cam is mounted on a spindle and coverts rotational driving force of the spindle into horizontal driving of a feeding gear, and the second eccentric cam is mounted on the spindle and converts rotational driving force of the spindle into vertical driving of the feeding gear. Each of the first eccentric cam and the second eccentric cam can rotate around the spindle to change a mounting phase relative to the spindle, thereby horizontal and vertical motion trails of the feeding gear can be adjusted. The cloth feeding mechanism of the sewing machine is further provided with a positioning part which is used for limiting phase positions, relative to the spindle, of the first eccentric cam and the second eccentric cam, and a stopper is arranged on the positioning part and can selectively limit the first eccentric shaft and the second eccentric shaft in at least two phase positions relatively to the spindle.
Description
Technical field
The present invention relates to a kind of industrial sewing machines, specifically, are related to a kind of seam that can change and carry out decorating sewing
Thread machine feeding track feed mechanism.
Background technology
As shown in the patent documentation (Chinese patent publication CN1043794) of Fig. 1, existing sewing machine for sewing ornaments has master
Feeding tooth and differential feed tooth, by the quantity of motion for changing the two feeding teeth, make cloth stretching and are sewed or made cloth
Shrink and sewed.The sewing machine has the eccentric cam 22 of the horizontal motion components for being used to obtaining cloth feeding tooth and is used for
The eccentric cam 63 of up and down motion component is obtained, via 4 section connecting rods, the motion transform by feeding tooth is oscillating motion.
The content of the invention
But, the eccentric cam 22 for obtaining horizontal motion components of existing sewing machine feed mechanism and for obtaining
The eccentric cam 63 of up and down motion component is integrally formed, and the angle being mounted on main shaft of the eccentric cam of the one is true
Fixed.Therefore, it is impossible to change the phase place on eccentric cam direction of rotation, each horizontal motion components can not be changed, transported up and down
Phase place on the direction of rotation of dynamic component.Therefore, change cloth feeding characteristic in order to correspond to sewing object, such as in order to increase
Centripetal force and change the feeding track of feeding tooth, change feeding track etc. to prevent sewing skew, it is necessary to change eccentric convex
Wheel.
The present invention proposes that in order to solve the technical problem its object is to offer one kind can easily vary
Main shaft is respectively relative to for obtaining the eccentric cam of horizontal motion components and the eccentric cam for obtaining up and down motion component
Installation phase place, so as to easily vary in the case where eccentric cam is changed without feeding track.
The cloth feeding mechanism of the sewing machine of the purpose of the present invention can be realized, is had：1st eccentric cam, which is arranged on
On main shaft, the rotary driving force of main shaft is transformed to the driving of the horizontal direction of feeding tooth；And the 2nd eccentric cam, its installation
On main shaft, the rotary driving force of main shaft is transformed to feed the driving of tooth above-below direction.Characterized in that, the above-mentioned 1st is eccentric
Cam and the 2nd eccentric cam can be rotated around the spindle respectively, change the installation phase place relative to main shaft, it is possible thereby to adjust respectively
The movement locus of the horizontal direction and above-below direction of feeding tooth, with positioning element, its be used to limiting above-mentioned 1st eccentric cam and
Above-mentioned 2nd eccentric cam is respectively relative to the phase position of main shaft, on above-mentioned positioning element is provided with retainer, and the retainer can
At least 2 phase bits are limited in so that above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam are respectively relative to main shaft optionally
Put.
Cloth feeding mechanism of the invention, as the 1st eccentric cam and the 2nd eccentric cam can be revolved rotating around main shaft
Turn, change the installation phase place relative to main shaft, and positioning element can optionally will the 1st eccentric cam and the 2nd eccentric convex
Wheel is respectively relative to main shaft and is limited at least 2 phase positions, therefore, it is possible to be easily adjusted the horizontal direction of feeding tooth and upper
The movement locus in lower direction.
Description of the drawings
Fig. 1 is the exploded perspective view of cloth feeding mechanism in prior art.
Fig. 2 is the figure of the cloth feed cam of the cloth feeding mechanism for representing first embodiment, and Fig. 2 (A) is that cloth enters
To the overall oblique view of cam, Fig. 2 (B) is the exploded perspective view of cloth feed cam.
Fig. 3 is the action pattern figure for representing first embodiment, and Fig. 3 (A) is to represent that retainer 7b is not convex from recess 4b sides
The figure of the state for going out, Fig. 3 (B) are the figures of the state for representing that retainer 7b is protruded from recess 4b sides.
Fig. 4 is the exploded perspective view of the cloth feed cam for representing second embodiment.
Fig. 5 is the figure for representing the 3rd embodiment.Fig. 5 (A) is the oblique view for representing retainer, and Fig. 5 (B)～(E) is table
Show the action pattern figure of the 3rd embodiment.
Fig. 6 is the figure for representing the 4th embodiment.Fig. 6 (A) is the oblique view for representing retainer, and Fig. 6 (B)～(D) is table
Show the action pattern figure of the 4th embodiment.
Fig. 7 is the figure for representing the 5th embodiment.Fig. 7 (A) is the overall oblique view for representing cloth feed cam, Fig. 7 (B)
It is the exploded perspective view of cloth feed cam, Fig. 7 (C)～(E) is the action pattern figure for representing the 5th embodiment.
Fig. 8 is the figure for representing the 6th embodiment.
Specific embodiment
(first embodiment)
The cloth feed cam of the cloth feeding mechanism of the first embodiment of the present invention is as shown in Fig. 2 by as positioning
The positioning cam 3 of part, as the eccentric cam up and down 6 and the horizontal eccentric cam as the 1st eccentric cam of the 2nd eccentric cam
1 is constituted.Insert main shaft in above-mentioned 3 cams respectively, and this 3 cams can enclose and rotate around the spindle.Positioning cam 3 is by installing
Screw 3a is fastened on main shaft, so as to be fixed on specific phase position relative to main shaft.Eccentric cam 6 and level are eccentric up and down
Cam 1 is independently formed, and is fastened on main shaft by mounting screw 1a, 6a respectively, such that it is able to adjust the phase place relative to main shaft.
There is on the end face of the 1st eccentric cam side of positioning cam 3 recess 4a, the 2nd eccentric cam side of positioning cam 3
There is on end face recess 4b.Hole 3b with the axis direction insertion in positioning cam 3 on bottom surface 4c, 4d of each recess.From 2
Hole 3b initially forms the elongated slot 3c of the peripheral direction opening to positioning cam 3.Being fitted together in 2 hole 3b respectively can be along the axle of hole 3b
The 1st retainer 7a and the 2nd retainer 7b as retainer of the pin-shaped of heart direction movement.1st retainer 7a and the 2nd retainer
7b has handle 8a, 8b respectively, and handle 8a, 8b can be movably embedded in elongated slot 3c along the length direction of elongated slot respectively, handle 8a,
8b is by length direction end abutment respectively with elongated slot 3c, mobile model of limit stops 7a, 7b in the axis direction of hole 3b
Enclose.The end of the recess 4a sides of retainer 7a can be in the model of the position of the position and protrusion do not protruded from the bottom surface 4c of recess 4a
Interior movement is enclosed, equally, the end of the recess 4b sides of retainer 7b can be in the position do not protruded from the bottom surface 4d of recess 4b and convex
Move in the range of the position for going out.
The usual direction of rotation of main shaft and cloth feed cam under sewing state is the direction that turns clockwise in Fig. 2
(the arrow Z-direction shown in Fig. 2 (B) and other figures).Abutting with the recess 4b of positioning cam 3 in upper and lower eccentric cam 6
The end face of side has convex portion 5, has convex portion 2 in the end face for abutting side with the recess 4a of positioning cam 3 of horizontal eccentric cam 1.
As shown in Fig. 3 (A), in handle 8b and the end abutment of the recess 4b sides opposite side of elongated slot 3c, the recess 4b of the 2nd retainer 7b
In the state of the end of side is not protruded from the bottom surface 4d of recess 4b, the main shaft direction of rotation upstream of the convex portion 5 of upper and lower eccentric cam 6
The end face (downside in Fig. 3) of side is abutted with the direction of rotation upstream-side-end of recess 4b.In addition, eccentric convex up and down changing
Wheel 6 relative to main shaft installation phase place when, unscrew the trip bolt 6a of upper and lower eccentric cam 6, shown in such as Fig. 3 (B), make convex
Wheel 3 and eccentric cam 6 are rotated against, and the convex portion 5 of eccentric cam 6 is moved to the position do not interfered with the end of recess 4b.So
Afterwards using the handle 8b of the 2nd retainer 7b of instrument or manual toggle, handle 8b is made to abut with the recess 4b side ends of elongated slot 3c, from
And the end of the 2nd retainer 7b is protruded from the bottom surface 4d of recess 4b.The recess 4b sides of the 2nd retainer 7b end from recess
In the state of the bottom surface 4d protrusions of 4b, the end face and the circumferential part of the 2nd retainer 7b of the main shaft direction of rotation upstream side of convex portion 5 are made
Abut, then screw the trip bolt 6a of upper and lower eccentric cam.
In addition, the action pattern figure of upper and lower eccentric cam 6 and the 2nd corresponding retainer 7b in Fig. 3, is illustrate only, but
The action pattern of horizontal eccentric cam 1 and the 1st corresponding retainer 7a is also identical, therefore omits diagram and explanation.
The rotary driving force of main shaft is from main shaft to positioning cam 3, upper and lower eccentric cam 6 and horizontal eccentric cam 1 are transmitted.By
In by rotating the convex portion 5 of upper and lower eccentric cam 6, the convex portion 2 of horizontal eccentric cam 1 in the above-described manner, while distinguishing
Abut with the direction of rotation upstream-side-end or retainer 7b, 7a of recess 4b, 4a, so phase place of the cam 6,1 relative to main shaft
Position is not easy skew.
According to above structure, for upper and lower eccentric cam 6 and horizontal eccentric cam 1 are relative to the installation phase place of main shaft, divide
2 phase positions can not be selected.That is, the object abutted by eccentric cam is from the direction of rotation upstream of the recess 4 of positioning cam 3
Select in the circumferential part of side end or retainer 7.Therefore, it can relative to upper and lower eccentric cam 6 and horizontal eccentric cam 1 respectively
It is adjusted in the installation phase place of main shaft, and then changes the movement locus of cloth feeding, thus obtains increasing fabric thickness
Become the feed motion track of the cloth centripetal force at big stage portion or obtain improving the movement locus of sewing skew.
(second embodiment)
In the first embodiment, exemplified with the structure of 1 positioning cam 3, but according to the limit in the configuration of feed mechanism
System, exist upper and lower eccentric cam 6 and horizontal eccentric cam 1 must on spindle axis direction configured separate situation.
In the case, as shown in figure 4, being respectively provided with the conduct of the eccentric cam up and down 26 as the 2nd eccentric cam
The positioning as positioning element of the positioning cam 23b and the horizontal eccentric cam 21 as the 1st eccentric cam of positioning element
Cam 23a.Now, it is respectively provided with and eccentric cam 26,21 corresponding recess 24a, 24b on positioning cam 23a, 23b
With retainer 27a, a 27b.Other structures are identical with first embodiment.
According to second embodiment, similarly can be respectively in 2 position adjustment eccentric cams 26,21 relative to main shaft
Phase place is installed.
(the 3rd embodiment)
In the first embodiment, retainer 7 is simple pin-shaped (cylinder), therefore can only (retainer is not in 2 positions
The state of the state of protrusion and protrusion) adjustment eccentric cam installation phase place.
In the third embodiment, as shown in Fig. 5 (A), retainer 37 with as the eccentric up and down convex of the 2nd eccentric cam
The part that the convex portion 35 of wheel 36 abuts is formed as multi-stage stairs shape.Other structures are identical with first embodiment, in Figure 5, hole
For 33b, elongated slot be 33c, handle be 38.In addition, 33 part of upper and lower eccentric cam 36 and positioning cam is illustrate only in Fig. 5, save
The structure of the horizontal eccentric cam as the 1st eccentric cam is omited.
As shown in Fig. 5 (B)～(E), according to the structure, by adjusting what retainer 37 was protruded from the bottom surface 34d of recess 34
Bulge quantity, changes the step that retainer 37 is abutted with the convex portion 35 of upper and lower eccentric cam 36, inclined up and down such that it is able to multistage adjustment
Installation phase place of the cardiac prominence wheel relative to main shaft.In addition, horizontal eccentric cam also utilizes same structure, phase can be adjusted with multistage
For the phase place of main shaft.Thus, the cloth feeding mechanism of the 3rd embodiment can be relative in multiple position adjustment eccentric cams
In the installation phase place of main shaft.
(the 4th embodiment)
In the first embodiment, retainer 7 is simple pin-shaped (cylinder), therefore can only (retainer is not in 2 positions
The state of the state of protrusion and protrusion) adjustment eccentric cam installation phase place.
In the 4th embodiment, shown in such as Fig. 6 (A), make retainer 47 with as the eccentric up and down convex of the 2nd eccentric cam
The abutment portion of the convex portion 45 of wheel 46 is formed as cone, and on retainer 47 is not provided with handle.From positioning cam 43
Hole 43b starts setting up the screwed hole 43c of the peripheral openings in positioning cam 43, screws togather retainer and fix spiral shell in screwed hole 43c
Nail 48.By the screw 48 that is tightened, the retainer 47 in patchhole 43b is pressed, such that it is able in the axial direction of positioning cam 43
The position of upper fixed stop device 47.Other structures are identical with first embodiment, and in figure 6, hole is 43b, and screwed hole is 43c.
In addition, Fig. 6 illustrate only 43 part of upper and lower eccentric cam 46 and positioning cam, eliminate inclined as the level of the 1st eccentric cam
The structure of cardiac prominence wheel.
In installation phase place of the upper and lower eccentric cam 46 of adjustment relative to main shaft, shown in such as Fig. 6 (B)～(D), unscrew first
Fixing screws 48, make retainer 47 become the state (Fig. 6 (B)) that can be moved freely.Then by the convex of upper and lower eccentric cam 46
45 relative movement of portion is to the position do not interfered with the end of retainer 47, and makes the end of retainer 47 from recess 44 using instrument
Bottom surface 44d protrusion (Fig. 6 (C)).It is convex to upper and lower bias from the bottom surface 44d of recess 44 in the end of 44 side of recess of retainer 47
In the state of the protrusion specific length of wheel side, be tightened screw 48, and retainer 47 is fixed relative to positioning cam 43, and makes convex
The end face of the main shaft direction of rotation upstream side in portion 45 abuts (Fig. 6 (D)) with the conus portion of retainer 47.Thus, complete inclined up and down
The adjustment of the installation phase place of cardiac prominence wheel 46.Similarly, here is omitted for the adjustment of the installation phase place of horizontal eccentric cam.
According to said structure, after the bulge quantity that adjustment retainer 47 is protruded from the bottom surface 44d of recess 44, by fixed spiral shell
Nail 48 is fixed, thus it is possible to vary the position that the convex portion of each eccentric cam is abutted with retainer 47, it is possible thereby to infinitely adjust each inclined
Installation phase place of the cardiac prominence wheel relative to main shaft.
(the 5th embodiment)
It is as shown in fig. 7, in the 5th embodiment, eccentric cam up and down 76 as the 2nd eccentric cam, inclined as the 1st
The horizontal eccentric cam 71 of cardiac prominence wheel and as between the positioning cam 73 of positioning element, respectively by eccentric shaft 70, decentralized casing
72 connections.
Eccentric shaft 70 has large-diameter portion 70a and minor diameter part 70b, and the axle center of large-diameter portion 70a and the axle center of minor diameter part 70b are inclined
The heart.
Decentralized casing 72 is drum, and the axle center of peripheral part 72a and the axle center of inner peripheral portion 72b are eccentric.Eccentric shaft 70
In inner peripheral portion 72b of minor diameter part 70b insertion decentralized casings 72.
Positioning cam 73 has：The hole 73a of main shaft insertion, the screw for being fixed on positioning cam 73 on main shaft are screwed togather
Screwed hole 73b, eccentric shaft 70 large-diameter portion 70a insertion hole 73d, for fixed eccentric shaft 70 large-diameter portion 70a screw
The screwed hole 73c for screwing togather.
Eccentric cam 76 has up and down：The hole 76a of main shaft insertion, for upper and lower eccentric cam 76 is fixed on main shaft
The hole 76d of the peripheral part 72a insertions of screwed hole 76b, decentralized casing 72 that screw is screwed togather, the periphery for fixing decentralized casing 72
The screwed hole 76c that the screw of portion 72a is screwed togather.
Horizontal eccentric cam 71 has：The hole 71a of main shaft insertion, for horizontal eccentric cam 71 is fixed on main shaft
The hole 71d of the peripheral part 72a insertions of screwed hole 71b, decentralized casing 72 that screw is screwed togather, the periphery for fixing decentralized casing 72
The screwed hole 71c that the screw of portion 72a is screwed togather.
According to said structure, when in inner peripheral portion 72b of the minor diameter part 70b insertion decentralized casings 72 of eccentric shaft 70, path
The axle center of portion 70b and the axis coinciding of inner peripheral portion 70b.The peripheral part 72a of the large-diameter portion 70a and decentralized casing 72 of eccentric shaft 70 is
The axle center CL overlapped with this is eccentric.When eccentric shaft 70 and decentralized casing 72 are rotated against, large-diameter portion 70a and peripheral part 72a can
Relative movement within the specific limits.Therefore, positioning cam 73 in connection, upper and lower eccentric cam 76 can also be in the scope
Interior relative movement.Specifically, it is located at the axle center CL of coincidence, the axle center 70c of large-diameter portion 70a, the axle center 72c of peripheral part 72a
On the basis of the state of the Fig. 7 (D) when on same plane, if decentralized casing 72 rotates relative to eccentric shaft 70 and makes peripheral part
The axle center 72c of 72a is maximum distance with the axle center 70c of large-diameter portion 70a in left side, then upper and lower eccentric cam 76 is relative to positioning
Anglec of rotation θ (reference Fig. 7 (C) counterclockwise of cam 73.If decentralized casing 72 rotates relative to eccentric shaft 70 and makes outer
The axle center 72c of all portion 72a is maximum distance with the axle center 70c of large-diameter portion 70a on right side, then up and down eccentric cam 76 relative to
Anglec of rotation θ (reference Fig. 7 (E)) clockwise of positioning cam 73.That is, eccentric cam 76 can be in 2 θ of angle up and down
In the range of, adjust the installation phase place relative to positioning cam 73 (main shaft).
Hereinafter illustrate to adjust order of the upper and lower eccentric cam 76 relative to the phase place of main shaft according to said structure.Determine first
Positioning cam 73 is fixed relative to main shaft by phase place of the positioning cam 73 relative to main shaft by fixing screws.Then unscrew use
Fixing screws in the upper and lower eccentric cam of fixation 76, for the fixation of the decentralized casing 72 in the upper and lower eccentric cam of fixed insertion 76
Screw, for the fixing screws of the eccentric shaft 70 in the upper and lower eccentric cam of fixed insertion 76, if now rotated eccentric convex up and down
Wheel 76, then eccentric shaft 70 and decentralized casing 72 are also rotated against.As mentioned above such that it is able to change upper and lower in the range of 2 θ of angle
Phase place of the eccentric cam 76 relative to main shaft.When making upper and lower eccentric cam 76 move to appropriate phase position, will be aforementioned solid
Determine screw to screw, thus complete the phase adjustment of upper and lower eccentric cam 76.
For the phase adjustment order of horizontal eccentric cam 71, due to identical with upper and lower eccentric cam 76, so omitting
Explanation.
In addition, above exemplified with eccentric shaft large-diameter portion be connected with positioning cam, the peripheral part of decentralized casing and bias it is convex
The structure of wheel connection, but the large-diameter portion of eccentric shaft is connected with eccentric cam, the peripheral part of decentralized casing is connected with positioning cam and is worked as
So can also.
According to the structure of the 5th embodiment, upper and lower eccentric cam and horizontal eccentric cam can be adjusted within the specific limits
Relative to the installation phase place of main shaft.
(the 6th embodiment)
Changed relative to the installation phase place of main shaft by alloing positioning cam, upper and lower eccentric cam and level can be expanded
Phase adjustment scope of the eccentric cam relative to main shaft.
As shown in figure 8, on the part of the main shaft 80 abutted in the leading section of the mounting screw 3a of positioning cam 3, being provided with
Planar portions 80a.Phase place of the positioning cam 3 relative to main shaft 80, by the phase decision of planar portions 80a.Phase place is set at 2 different
Planar portions 80a, the planar portions abutted by the leading section of the mounting screw 3a of regioselective cam 3 can be with regioselective
Phase place of the cam 3 relative to main shaft 80.
In the structure of first embodiment, 1 phase of upper and lower eccentric cam 6 and horizontal eccentric cam is selected from 2 positions
For the phase place of positioning cam 3, such that it is able to 2 position adjustments relative to main shaft phase place.But in the 6th embodiment,
From phase place of the regioselective cam 3 relative to main shaft 80 in 2 positions, and can select from 2 positions inclined up and down
The phase place of cardiac prominence wheel 6 and horizontal eccentric cam 1 relative to positioning cam 3, it is possible to selecting inclined up and down from 4 positions altogether
The phase place of cardiac prominence wheel 6 and horizontal eccentric cam 1 relative to main shaft 80.
Claims (6)
1. a kind of cloth feeding mechanism of sewing machine, has：
1st eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to the drive of the horizontal direction of feeding tooth
It is dynamic；And
2nd eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to feed the driving of tooth above-below direction,
Characterized in that,
Above-mentioned 1st eccentric cam and the 2nd eccentric cam can be rotated around the spindle respectively, change the installation phase place relative to main shaft,
It is possible thereby to adjustment feeds the movement locus of the horizontal direction and above-below direction of tooth respectively,
With positioning element, which is used to limit above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam is respectively relative to the phase of main shaft
Position position,
Retainer is provided with above-mentioned positioning element, the retainer can optionally by above-mentioned 1st eccentric cam and the above-mentioned 2nd
Eccentric cam is respectively relative to main shaft and is limited at least 2 phase positions,
Above-mentioned retainer can be optionally situated at becomes the shape engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam
The position of state and become the position of the state not engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam,
Above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam have convex portion respectively, and above-mentioned positioning element has recess, by upper
State that convex portion and above-mentioned recess are engaged on main shaft direction of rotation or raised part and above-mentioned retainer are on main shaft direction of rotation
Engaging, limits the rotation of the 1st eccentric cam and the 2nd eccentric cam to main shaft direction of rotation.
2. the cloth feeding mechanism of sewing machine according to claim 1, it is characterised in that
Above-mentioned retainer is movably supported on above-mentioned positioning element, can become from the bottom surface of above-mentioned recess the shape for protruding
State and non-salient state.
3. the cloth feeding mechanism of sewing machine according to claim 2, it is characterised in that
The hole parallel to axial direction is provided with the bottom surface of the recess of above-mentioned positioning element, above-mentioned retainer is slidably embedded in the hole
In.
4. a kind of cloth feeding mechanism of sewing machine, has：
1st eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to the drive of the horizontal direction of feeding tooth
It is dynamic；And
2nd eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to feed the driving of tooth above-below direction,
Characterized in that,
Above-mentioned 1st eccentric cam and the 2nd eccentric cam can be rotated around the spindle respectively, change the installation phase place relative to main shaft,
It is possible thereby to adjustment feeds the movement locus of the horizontal direction and above-below direction of tooth respectively,
With positioning element, which is used to limit above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam is respectively relative to the phase of main shaft
Position position,
Retainer is provided with above-mentioned positioning element, the retainer can optionally by above-mentioned 1st eccentric cam and the above-mentioned 2nd
Eccentric cam is respectively relative to main shaft and is limited at least 2 phase positions,
Above-mentioned retainer can be optionally situated at becomes the shape engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam
The position of state and become the position of the state not engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam,
The end engaged with above-mentioned 1st eccentric cam or above-mentioned 2nd eccentric cam of above-mentioned retainer is formed as step-like.
5. a kind of cloth feeding mechanism of sewing machine, has：
1st eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to the drive of the horizontal direction of feeding tooth
It is dynamic；And
2nd eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to feed the driving of tooth above-below direction,
Characterized in that,
Above-mentioned 1st eccentric cam and the 2nd eccentric cam can be rotated around the spindle respectively, change the installation phase place relative to main shaft,
It is possible thereby to adjustment feeds the movement locus of the horizontal direction and above-below direction of tooth respectively,
With positioning element, which is used to limit above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam is respectively relative to the phase of main shaft
Position position,
Retainer is provided with above-mentioned positioning element, the retainer can optionally by above-mentioned 1st eccentric cam and the above-mentioned 2nd
Eccentric cam is respectively relative to main shaft and is limited at least 2 phase positions,
Above-mentioned retainer can be optionally situated at becomes the shape engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam
The position of state and become the position of the state not engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam,
The end engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam of above-mentioned retainer is formed as coniform.
6. a kind of cloth feeding mechanism of sewing machine, has：
1st eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to the drive of the horizontal direction of feeding tooth
It is dynamic；And
2nd eccentric cam, which is arranged on main shaft, and the rotary driving force of main shaft is transformed to feed the driving of tooth above-below direction,
Characterized in that,
Above-mentioned 1st eccentric cam and the 2nd eccentric cam can be rotated around the spindle respectively, change the installation phase place relative to main shaft,
It is possible thereby to adjustment feeds the movement locus of the horizontal direction and above-below direction of tooth respectively,
With positioning element, which is used to limit above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam is respectively relative to the phase of main shaft
Position position,
Retainer is provided with above-mentioned positioning element, the retainer can optionally by above-mentioned 1st eccentric cam and the above-mentioned 2nd
Eccentric cam is respectively relative to main shaft and is limited at least 2 phase positions,
Above-mentioned retainer can be optionally situated at becomes the shape engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam
The position of state and become the position of the state not engaged with above-mentioned 1st eccentric cam and above-mentioned 2nd eccentric cam,
Above-mentioned retainer is made up of eccentric shaft and decentralized casing, and above-mentioned eccentric shaft has large-diameter portion and minor diameter part, the large-diameter portion phase
Eccentric for the minor diameter part, above-mentioned decentralized casing has peripheral part and inner peripheral portion, and the peripheral part is eccentric relative to the inner peripheral portion, on
The minor diameter part for stating eccentric shaft is inserted in the inner peripheral portion of above-mentioned decentralized casing, and in above-mentioned large-diameter portion and above-mentioned peripheral part
It is connected with above-mentioned positioning element, another and above-mentioned 1st eccentric cam or the above-mentioned 2nd in above-mentioned large-diameter portion and above-mentioned peripheral part
Eccentric cam connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210119290.2A CN103374794B (en) | 2012-04-20 | 2012-04-20 | cloth feeding mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210119290.2A CN103374794B (en) | 2012-04-20 | 2012-04-20 | cloth feeding mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103374794A CN103374794A (en) | 2013-10-30 |
| CN103374794B true CN103374794B (en) | 2017-05-10 |
Family
ID=49460606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210119290.2A Active CN103374794B (en) | 2012-04-20 | 2012-04-20 | cloth feeding mechanism of sewing machine |
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| CN104195752B (en) * | 2014-09-25 | 2016-08-24 | 杰克缝纫机股份有限公司 | Overedger cloth feeding mechanism |
| CN107447377B (en) * | 2017-09-19 | 2020-07-07 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN107558014B (en) * | 2017-09-19 | 2020-03-31 | 杰克缝纫机股份有限公司 | Cloth feeding mechanism and sewing machine |
| CN108842311A (en) * | 2018-07-11 | 2018-11-20 | 杰克缝纫机股份有限公司 | A kind of sewing machine and its feed device |
| CN111850845A (en) * | 2019-04-24 | 2020-10-30 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN110670248A (en) * | 2019-11-08 | 2020-01-10 | 杰克缝纫机股份有限公司 | Adjustable cloth feeding mechanism and sewing machine |
| CN112853633B (en) * | 2019-11-28 | 2022-07-05 | 杰克科技股份有限公司 | Feed lifting mechanism with adjustable feed lifting height and flat seaming machine |
| CN111020892B (en) * | 2019-12-18 | 2022-06-21 | 杰克科技股份有限公司 | Sewing machine with adjustable tooth track |
| CN114703607B (en) * | 2022-03-08 | 2024-06-18 | 浙江沪龙科技股份有限公司 | Control method for switching movement track of cloth feeding teeth of sewing machine in real time |
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| CN1170093A (en) * | 1996-05-13 | 1998-01-14 | 兄弟工业株式会社 | Adjusting device of eccentricity of eccentric wheel apparatus |
| CN1407164A (en) * | 2001-08-03 | 2003-04-02 | 重机公司 | Cup seaming machine |
| CN1900401A (en) * | 2005-07-18 | 2007-01-24 | 建联缝衣机股份有限公司 | Main shaft driving improving structure of sewing machine |
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| JPS5713004Y2 (en) * | 1975-10-31 | 1982-03-15 |
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| CN1170093A (en) * | 1996-05-13 | 1998-01-14 | 兄弟工业株式会社 | Adjusting device of eccentricity of eccentric wheel apparatus |
| CN1167170A (en) * | 1996-05-15 | 1997-12-10 | 飞马缝纫制造株式会社 | Sewing machine of cylinder type base board with differential cloth feeding mechanism |
| CN1407164A (en) * | 2001-08-03 | 2003-04-02 | 重机公司 | Cup seaming machine |
| CN1900401A (en) * | 2005-07-18 | 2007-01-24 | 建联缝衣机股份有限公司 | Main shaft driving improving structure of sewing machine |
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| CN103374794A (en) | 2013-10-30 |
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