CN101275345A - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- CN101275345A CN101275345A CNA2008100891212A CN200810089121A CN101275345A CN 101275345 A CN101275345 A CN 101275345A CN A2008100891212 A CNA2008100891212 A CN A2008100891212A CN 200810089121 A CN200810089121 A CN 200810089121A CN 101275345 A CN101275345 A CN 101275345A
- Authority
- CN
- China
- Prior art keywords
- aforementioned
- suture
- cam
- guiding portion
- libra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
- D05B49/02—Take-up devices, e.g. levers, for the needle thread operated by cams or linkages
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine capable of moving up and down with a cloth pressure foot so as to alter extraction quantity of stitches. The sewing machine (1) is provided with a pressure foot rod (33) with a cloth pressure foot for pressing cloth at the lower end, to make the cloth pressure foot move up and down along the up and down movement thereof; a libra reciprocating driven by a motor of the sewing machine, to extract stitches supplied by a knitting needle; a stitch guiding part (5) installed between a spool and the libra for locking stitches, and increasing the extraction quantity of stitches of the libra by movement to a certain direction, and reducing the extraction quantity of stitches of the libra by movement to the opposite direction of a certain direction; and a linking mechanism (7) moving up and down with the pressure foot rod (33) to make the stitch guiding part (5) move to a certain direction or an opposite direction.
Description
Technical field
The present invention relates to be provided with the Sewing machines of suture guiding portion.
Background technology
Usually, suture guiding portion is set on Sewing machines, it will guide (for example, with reference to patent documentation 1) to the pin hole of suture needle from the suture that suture supply sources such as bobbin are extracted out.Suture guiding portion for example is arranged between the suture path from the bobbin to the Libra, and the suture guiding that will extract out by moving up and down of Libra is to suture needle.Suture guiding portion is fixed on the face side (towards user's one side) of sewing machine main body, when regulating the amount of the suture of being extracted out by Libra, changes the path of suture by make the relative sewing machine main body move left and right of suture guiding portion before making.
Patent documentation 1: open flat 6-72575 communique in fact
Summary of the invention
But for above-mentioned suture guiding portion, because can not suture guiding portion be moved, so make the stroke up and down of the Libra in the process, in other words the suture extraction amount of Libra be constant all the time.Therefore, under the situation of making the sewn object that as stage portion thickness changes suddenly, sharply change, have the problem of poor stitching qualitys such as wire jumper, flotation line, broken string take place at the consumption of stage portion suture.
Problem for the stage portion that solves above-mentioned sewn object, has a kind of method, as shown in Figure 9, suture guiding portion 203 is installed on the presser bar 202 that supports cloth pressing 201, when cloth pressing 201 is against on the stage portion, rise, make LSOR by the bottom dead centre that makes suture guiding portion 203 with presser bar 202, and increase suture extraction amount.
But, though be against moment on the stage portion, can increase suture extraction amount at cloth pressing 201, yet because after being against on the stage portion, suture extraction amount is returned initial value, so be difficult to improve the problem that above-mentioned poor stitching quality occurs.
Therefore, the present invention proposes in order to solve above-mentioned problem, its purpose be to provide a kind of can with the interlock that moves up and down of cloth pressing, change the Sewing machines of the extraction amount of suture.
According to technical scheme 1 described invention, if fabric thickness changes and cloth pressing is moved up and down, the presser bar that then supports cloth pressing also moves up and down.At this moment, link gear and presser bar move up and down interlock, make suture guiding portion to a certain direction or move in the other direction.By making suture guiding portion, can change the extraction amount of the suture of Libra in the other direction to a certain direction or mobile.
Therefore, can with the interlock that moves up and down of cloth pressing, and change the extraction amount of suture.
According to technical scheme 2 described inventions, if presser bar rises, then cam rotation.Here, because the profile of cam forms the butt position that makes suture guiding portion and cam to a certain direction or displacement in the other direction, if so the cam rotation then makes by the suture guiding portion of pretension parts pretension mobile to a certain direction or opposite direction along the profile of cam.
Thus, can increase the extraction amount of the suture of Libra.
Therefore, when the thickness thickening of the cloth of pushing by cloth pressing, can make suture guiding portion to a certain direction or move in the other direction, and increase the extraction amount of the suture of Libra.Therefore, can regulate the extraction amount of suture accordingly with fabric thickness.
According to technical scheme 3 described inventions, by corresponding with the protrusion amount with respect to needle plate of the feeding tooth that is positioned at the cloth pressing below, utilize and to regulate parts at interval and reserve interval between cam pressing plate and cam, thereby the fluctuating during the cloth feeding that the feeding tooth can not caused passes to cam.
Thus, can under the state of having eliminated the influence of feeding tooth when making, regulate the extraction amount of suture.
Technical scheme 4 described inventions are characterised in that in technical scheme 2 described Sewing machiness, aforementioned suture guiding portion has: guide portion, and it ends the suture card and guides to aforementioned Libra; And base portion, it is provided with aforementioned guide portion, makes this guide portion can be to aforementioned a certain direction and regulate in the other direction the installation site, this base portion by aforementioned pretension parts pretension with aforementioned cam butt.
According to technical scheme 4 described inventions, by guide portion is set, make base portion and cam butt on base portion, when guide portion is installed, can also regulate the installation site to a certain direction and opposite direction on base portion.And, utilizing base portion and cam, pedestal itself also can move adjusting to a certain direction and opposite direction.
Thus, because guide portion can be carried out position adjustments with respect to cam two stages,, can regulate the extraction amount of the suture of Libra more subtly so the adjustable range of position is bigger.
The effect of invention
According to technical scheme 1 described invention, can with the interlock that moves up and down of cloth pressing, and change the extraction amount of suture.
According to technical scheme 2 described inventions, when the thickness thickening of the cloth of pushing by cloth pressing, can make suture guiding portion to a certain direction or move in the other direction, increase the extraction amount of the suture of Libra.Therefore, can regulate the extraction amount of suture accordingly with fabric thickness.
According to technical scheme 3 described inventions, can under the state of having eliminated the influence of feeding tooth when making, regulate the extraction amount of suture.
According to technical scheme 4 described inventions,,, can regulate the extraction amount of the suture of Libra more subtly so the adjustable range of position is bigger because guide portion can be carried out position adjustments with respect to cam two stages.
Description of drawings
Fig. 1 is the front view of Sewing machines.
Fig. 2 (a) is the front view of the structure of expression suture guiding portion and link gear, (b) is near the side view of the structure the expression cam.
Fig. 3 is the vertical view of the structure of expression suture guiding portion and link gear.
Fig. 4 is the side view of the structure of expression suture guiding portion and link gear.
Fig. 5 is the front view of the action of explanation suture guiding portion and link gear.
Fig. 6 is the suture guiding portion of expression in the embodiment 2 and the front view of the structure of link gear.
Fig. 7 is the suture guiding portion of explanation in the embodiment 3 and the front view of the action of link gear.
Fig. 8 is the suture guiding portion of explanation in the embodiment 4 and the front view of the action of link gear.
Fig. 9 is the figure of the relation of existing suture guiding portion of expression and presser bar.
The specific embodiment
Below, with reference to accompanying drawing, the best mode of the Sewing machines that the present invention relates to is at length described.
＜embodiment 1 〉
(structure of Sewing machines)
As shown in Figure 1, on Sewing machines 1, be provided with: pedestal part 2, it accommodates still 21 and lower shaft 22; And arm 3, it uprightly is arranged on the pedestal part 2, accommodates the needle bar 32 and the last axle that keep pin 31.
Be formed with the needle plate 23 of pin hole 24 in the upper surface setting of pedestal part 2.Below the needle plate 23 in pedestal part 2 still 21 is set.
Still 21 links by the driving and the lower shaft 22 of sewing machine electromotor, thereby still 21 is also rotated.
Front end at arm 3 can support presser bar 33 up or down.In the lower end of presser bar 33, can be freely cloth pressing 34 be installed with dismantling, and be had and utilize not shown spring the known structure of cloth pressing 34 to the upper surface pushing of needle plate 23.In addition, in this structure, as shown in Figure 2, cam pressing plate 35 newly is set in the upper end of presser bar 33.
As shown in Figure 1, at the upper surface of arm 3 suture guiding bar 41 is set uprightly, it is used to guide the suture from not shown bobbin.On the front surface top of arm 3 the 1st suture adjusting device 42 is set.Below the 1st suture adjusting device 42, the front surface bottom of arm 3, the 2nd suture adjusting device 43 is set.On the 2nd suture adjusting device 43, line taking spring 44 is set.At the left of the 2nd suture adjusting device 43, arm suture guiding portion (presser bar abut suture guiding portion) 45 is set.
At the front surface of arm 3, between the 1st suture adjusting device 42 and the 2nd suture adjusting device 43, suture guiding portion 5 is set.At the left of suture guiding portion 5, from the front surface of arm 3 forwards (operator's side) extend Libra 6 be set, this Libra 6 is set to and can moves back and forth on above-below direction along the groove 61 that is formed at arm 3 front surfaces.Libra 6 links via Libra transmission mechanism etc. and last axle, and the driving by sewing machine electromotor moves up and down.
The reach the standard grade suture path of T is as follows.From the T that reaches the standard grade of the supply source of reaching the standard grade, pass the hole of suture guiding bar 41, guide to the 1st suture adjusting device 42 then, re-boot to the 2nd suture adjusting device 43.Then, hang on the line taking spring 44, be suspended to again on the arm suture guiding portion 45, pass suture guiding portion 5 then, pass Libra 6 again, pass the pin hole of suture needle 31 at last.
When suture needle 31 moves up and down, by with the co-operating of still 21, the bobbin thread (rolling off the production line) of reach the standard grade T and still 21 inside is twined mutually forms stitching.
(suture guiding portion)
As Fig. 2～shown in Figure 4, suture guiding portion 5 has: guide member 51, and it has the 51b of threading portion of the ring-type of upper and lower opening, passes with the aforementioned suture T that can make 44 on aforementioned Libra 6 and aforementioned line taking spring; And base component 52, it can move to following left position and right-hand position, above-mentioned left position is to make the aforementioned threading 51b of portion be positioned at position (left of the front of arm 3, Fig. 2 (a)) on the suture path of 44 on aforementioned Libra 6 and line taking spring, and right bit is changed to the aforementioned threading 51b of portion is moved so that this suture path bent position (base end side of arm 3, Fig. 2's (a) is right-hand) from the left position to right-hand.Base component 52 has the abutting part 52a with aftermentioned cam body 71 (control agent) butt.
Slotted hole 51c is used for carrying out the position adjustment when being installed to guide member 51 on the base component 52, and utilization can be inserted the dogbolt 53 among this slotted hole 51c along its length movably, and guide member 51 is fixed on the base component 52.Therefore,, the position of the dogbolt 53 among the slotted hole 51c is relatively changed, can regulate the installation site of guide member 51 with respect to base component 52 by mobile guide member 51.
At the aforementioned abutting part 52a of surface (cam face) butt of end setting of base component 52 and cam body 71, at an end of the fixing pedestal axle 54 that extends along the moving direction of guide member 51 of the other end of base component 52.The other end of this pedestal axle 54 inserts among the bullport 3a that is formed on the arm 3 with can move freely.Therefore, arm 3 works as the bearing of pedestal axle 54.
(link gear)
As Fig. 2～shown in Figure 4, link gear 7 has: cam body 71, and it is disposed at the top of cam pressing plate 35, can rotate by the rising of presser bar 33, has cam surface in periphery; And as the spring 73 of pretension parts, it is with the abutting part 52a pretension of guide portion 5, so that the cam surface butt of this abutting part 52a and cam body 71.
On aforementioned camshaft 72, shown in Fig. 2 (b), helical spring 75 is installed, one end and arm 3 cards end, and the other end and cam body 71 cards end, and utilize this helical spring 75, with the counter clockwise direction pretension of cam body 71 along Fig. 2 (a).In addition, the spring constant of helical spring 75 is set at and can produces the pretightning force that is higher than spring 73.
The abutting part 52a of aforementioned base component 52 is configured to, and near the cam surface butt the top 71c between top 71a and the top 71c.Spring 73 compression coil make two ends engage with base component 52 and arm 3 around being installed on the aforementioned pedestal axle 54, all the time with the direction pretension of suture guiding portion 5 to pushing cam body 71.
In addition, relative with arm 3 front (Fig. 3 left side) of the mobile route of base component 52 and retainer 74 is set as shown in Figure 3, its restriction base component 52 is excessively mobile to Fig. 3 left (Fig. 2 (a) left).
(action of suture guiding portion)
As shown in Figure 5, if in the process of making, be against by cloth pressing 34 on the stage portion of cloth, and the presser bar 33 and the fabric thickness of this stage portion are correspondingly risen, then cam pressing plate 35 rises integratedly.Near the cam body 71 that engages with cam pressing plate 35 front ends the 71b of top is the elastic force of center opposing helical spring 75 with camshaft 72, to the clockwise direction rotation of Fig. 5 and the corresponding anglec of rotation of ascending amount of cam pressing plate 35.To clockwise rotation, link of front (left of Fig. 5) displacement of the outer rim of top 71a and top 71c by this cam body 71 to arm 3.The base component 52 that abutting part 52a engages with cam body 71 is followed the displacement of cam body 71 and is moved to the front of arm 3 by the pretightning force of spring 73.Therefore, the position of the 51b of threading portion of suture guiding portion 5 is also with the front displacement of the amount of movement corresponding with the fabric thickness of stage portion to arm 3, and shortens the suture path of 44 on Libra 6 and line taking spring.Under this state, if by the action of Sewing machines Libra 6 is risen, then its suture extraction amount increases.
This state continues to the below of stage portion by presser feet 34 always.
In addition, be not limited only to stage portion, can also follow the ascending amount of the presser bar 33 corresponding,, the position of the 51b of threading portion of suture guiding portion 5 is changed and keep this state corresponding to the position of rotation of cam body 71 with the fabric thickness of presser feet 34 belows.
And, presser bar 33 is descended, then cam body 7 is because rotated to the counter clockwise direction pretension by helical spring 75, so suture guiding portion 5 is with the mode displacement near the state of Fig. 2 (a).
(action effect)
As mentioned above, according to Sewing machines 1, if rise owing to form presser bar 33, then cam body 71 rotations, the butt position that suture guiding portion 5 and cam body are 71 is to the front displacement of arm 3, so, if cam body 71 rotations, then will be along the profile of cam body 71 by the suture guiding portion 5 of spring 73 pretensions, move to the front of arm 3.
The extraction amount of the suture in the time of thus, can increasing Libra 6 risings.
Therefore, because when the thickness thickening of the cloth of being pushed by cloth pressing 34, suture guiding portion 5 moves to the front of arm 3, can increase the suture extraction amount of Libra 6, thus all the time can be according to fabric thickness, the extraction amount of adjusting suture.
In addition, because suture guiding portion 5 constitutes, the guide member 51 that the suture card is ended is set on base component 52, make base component 52 and cam body 71 butts, so, when guide member 51 is installed, can also regulate the installation site to the front and the base end side of arm 3 on base component 52.And, utilizing base component 52 and cam body 71, base component 52 itself also can move adjusting to the front and the base end side of arm 3.
Thus, the position adjustments scope of guide member 51 is bigger, can regulate the extraction amount of the suture of Libra 6 more subtly.
＜embodiment 2 〉
Below, in Fig. 6, embodiment 2 is described.In embodiment 2,, omit explanation for the identical label of structure tag identical with embodiment 1.
Rotatably be supported on the cam body (control agent) 84 on the frame of Sewing machines 1a, form the general triangular that positive apparent time has three top 84a, 84b, 84c, near the 84a of top, can rotate freely the earth's axis and support by camshaft 85.This cam body 84 is forming on the long this point of outer rim of outer rim than binding top 84a and top 84c that links top 84a and top 84b, and is different with the cam body 71 of embodiment 1.
The base component 52 of suture guiding portion 5 is configured near the 84c of top, with the outer rim butt that links top 84a and top 84c.The outer rim that links top 84a and top 84c forms, and by the rotation of cam body 84, makes the front displacement of the butt position of suture guiding portion 5 and cam body 84 to arm 3.
Here, suture guiding portion 5 is by the direction pretension of spring 73 to pushing cam body 84.Penetrate pedestal axle 54 in spring 73, spring 73 is along with arm 3 stretches with the interval variation of base component 52.In addition, spring 73 is arranged between base component 52 and the arm 3 with the state of comparing compression with natural length, utilizes this elastic force to obtain reaction force from arm 3, and base component 52 is pushed to cam body 84.
(regulating parts at interval)
As regulating the eccentric pin 8 that parts work at interval, have: by the rotating shaft 81 that bolt constitutes, its head exposes to the face side of arm 3, can be waited by the user to be supported on the frame with being rotated; And eccentric part 82, it is with respect to these rotating shaft 81 eccentric settings.Rotating shaft 81 is configured such that certain any tangent line of certain any tangent line and periphery by eccentric part 82 by periphery is consistent, and to be configured to the upper end of the cam pressing plate 35 on the presser bar 33 when not pushing cloth as yet highly identical in the upper end of rotating shaft 81.
The eccentric part 82 of eccentric pin 8 is configured to and can engages with the binding top 84b of cam body 84 and the bottom of top 84c near aforementioned top 84b.
Eccentric pin 8 is by making rotating shaft 81 rotation, and holding section that change eccentric part 82 and 84 of cam bodies, the binding top 84b of the upper end of adjustment cam pressing plate 35 and cam body 84 and the outer intermarginal distance of top 84c.
In the side of rotating shaft 81, the dogbolt 83 of the rotation that stops rotating shaft 81 is set, by making dogbolt 83 and rotating shaft 81 butts, can stop the rotation of rotating shaft 81, carry out the location of eccentric pin 8.
(action of eccentric pin)
As shown in Figure 6, when utilizing the interval of eccentric pin 8 adjustment cam bodies 84 and cam pressing plate 35, by rotating rotating shaft 81 accordingly with respect to the protrusion amount of needle plate 23, and change rotating shaft 81 and the binding top 84b of cam body 84 and the outer intermarginal interval of top 84c with the feeding tooth that is arranged at pedestal part 2.
Here, make in hope under the situation of cam body 84 and cam pressing plate 35 butts, make the part in the eccentric part 82 move to rotating shaft 81 belows, so that rotating shaft 81 is positioned at the top of eccentric pin 8 with respect to rotating shaft 81 off-centre.On the other hand, hope make cam body 84 and cam pressing plate 35 to greatest extent away from situation under, make the part in the eccentric part 82 move to rotating shaft 81 tops, so that rotating shaft 81 is positioned at the below of eccentric pin 8 with respect to rotating shaft 81 off-centre.
(action effect)
According to Sewing machines 1a, can utilize eccentric pin 8, corresponding with the feeding tooth that is positioned at cloth pressing 34 belows with respect to the protrusion amount of needle plate 32, reserve the cam pressing plate 35 of presser bar 33 upper ends and the interval of cam body 84.Because this space can absorb the fluctuating of feeding tooth, so the fluctuating during the cloth feeding that the feeding tooth causes can not be passed to cam body 84.
Thus, can under the state of having eliminated the influence of feeding tooth when making, regulate the extraction amount of suture.
＜embodiment 3 〉
Below, in Fig. 7, embodiment 3 is described.The difference of embodiment 3 is to change the cam face of cam body, for the structure tag identical label identical with embodiment 1, omits explanation.
Cam body (control agent) 90 forms, and positive apparent time has the almost diamond of four top 90a, 90b, 90c, 90d.Top 90b and top 90d are configured to highly roughly the same.
In addition, cam body 90 form link the outer rim between adjacent top 90a～90d length about equally.
The base component 52 of suture guiding portion 5 is configured to can be near the 90d of top, with the outer rim butt that links top 90c and top 90d.The outer rim that links top 90c and top 90d forms, in Fig. 7 from top 90c to the right oblique upper extend, form the rotation of the cam body 90 that causes by rising, make of base end side (in the other direction) displacement of the butt position of suture guiding portion 5 and cam body 90 to arm 3 by presser bar 33.
Here, suture guiding portion 5 is by the direction pretension of spring 73 to pushing cam body 90.Penetrate pedestal axle 54 in spring 73, spring 73 is along with arm 3 stretches with the interval variation of base component 52.In addition, spring 73 is arranged between base component 52 and the arm 3 with the state of comparing compression with natural length, utilize its elastic force and obtain reaction force from arm 3, with base component 52 to cam body 90 pushings.
(action of suture guiding portion)
As shown in Figure 7, in the process of making, if be against by cloth pressing 34 presser bar 33 is risen, then the top 90b of cam body 90 will be that middle mind-set clockwise direction rotates with camshaft 91 from the top view of arm 3.In addition, the top 90d of cam body 90 is middle mind-set clockwise direction rotation with camshaft 91 also from the top view of arm 3.Thus, top 90b is moved upward, and top 90d moves downwards.Move downwards by top 90d, the outer rim that links top 90c and top 90d moves to the front (a certain direction) of arm 3.Rotation by above-mentioned cam body 90 is moved, and is pressed against the base component 52 of the suture guiding portion 5 on the outer rim of the binding top 90c of cam body 90 and top 90d by spring 73, is subjected to cam body 90 pushings and moves to the base end side (in the other direction) of arm 3.Therefore, the butt position of suture guiding portion 5 and cam body 90 is to the base end side displacement of arm 3, and the base end side that the card stop bit of the suture of suture guiding portion 5 is put also to arm 3 moves.
(action effect)
As mentioned above, according to Sewing machines 1b, cam body 90 rotations if presser bar 33 rises.Because the profile of cam body 90 forms the suture guiding portion 5 and the butt position of cam body 90 are moved to the base end side of arm 3, if so cam body 90 rotations, then suture guiding portion 5 is also along the profile of cam body 90, the pretightning force of antagonistic spring 73 and moving to the base end side of arm 3.
The extraction amount of the suture in the time of thus, can reducing Libra 6 risings.
Therefore, when presser bar 33 is risen, the anglec of rotation corresponding to cam body 90 makes suture guiding portion 5 move and keep this state to the base end side of arm 3, thus can be by corresponding with fabric thickness, reduce the extraction amount of suture and make stitching firm.
＜embodiment 4 〉
Below, in Fig. 8, embodiment 4 is described.The difference of embodiment 4 is to change the structure of suture guiding portion and link gear, especially, by corresponding with fabric thickness suture guiding portion is moved up and down, and the suture extraction amount when regulating Libra and rising.For the structure tag identical label identical, omit explanation with embodiment 1.In addition, the above-below direction among Fig. 8 is consistent with the above-below direction of Sewing machines 1c.
Suture guiding portion 10 has: guide member 11, and it will guide to Libra 6 from the suture of bobbin; And base component 12, it is provided with guide member 11, make this guide member 11 carry out the installation site and regulate to below that the suture extraction amount that makes Libra 6 increases and the top that suture extraction amount is reduced, this base component 12 by spring 103 pretensions with cam body (control agent) 101 butts.
Guide member 11 has: installation portion 11a, and it forms tabular, is configured to make its length direction along above-below direction; And the 11b of threading portion, its end from installation portion 11a extends to form to the side, forms ring-type can make suture break-through up and down.
Form the slotted hole 11c that extends along above-below direction on installation portion 11a, dogbolt 13 passes this slotted hole 11c and screws in base component 12, and guide member 11 is fixed on the base component 12.Therefore, by changing the position of the dogbolt 13 among the slotted hole 11c, can be along the installation site of above-below direction adjusting with respect to the guide member 11 of base component 12.
Base component 12 is configured to the surperficial butt of an end and cam body 101.Link an end of the pedestal axle 14 that extends along the above-below direction of arm 3 at the other end of base component 12, the other end of this pedestal axle 14 can insert in the arm 3 along axis direction with moving freely.Therefore, arm 3 works as the bearing of pedestal axle 14.
(link gear)
As shown in Figure 8, link gear 100 has: face observation and be roughly rectangular cam body 101, it is configured in the top of presser bar 33, can rotate freely the earth's axis in approximate center by camshaft 102 and support; And as the spring 103 of pretension parts, it is with base component 12 pretensions of suture guiding portion 10, so that this base component 12 and cam body 101 butts.
Near the top 101a above Fig. 8 that the base component 12 of suture guiding portion 10 is configured at cam body 101 left side with top portion butt.
Spring 103 is between arm 3 and base component 12, and winding is installed on the pedestal axle 14, and usually, it is compressed to produce downward pretightning force, being worked to the mode of cam body 101 pushings in the lower end of base component 12.
(action of suture guiding portion)
As shown in Figure 8, if in the process of making, be against by cloth pressing 34 presser bar 33 is risen, then the top 101c of cam body 101 is by pushing away on the presser bar 33, and cam body 101 is center and along the counter clockwise direction rotation of Fig. 8 with camshaft 102.In addition, the top 101a of cam body 101 is that the center is along rotation counterclockwise with camshaft 102 also from the top view of arm 3.Thus, top 101c is moved upward, and is positioned at across camshaft 102 and the locational top 101a relative with top 101c moves downwards.Near the base component 12 of the suture guiding portion 10 on thus, pressing against the 101a of top by spring 103 also moves downwards.Therefore, the butt position displacement downwards of suture guiding portion 10 and cam body 101, the also displacement downwards of position of the 11b of threading portion of suture guiding portion 10.
(action effect)
Like this, according to Sewing machines 1c, follow moving up and down of presser bar 33, cam body 101 is along clockwise direction or rotation counterclockwise, by the suture guiding portion 10 of spring 103 pretensions corresponding to the anglec of rotation of cam body 101 along the above-below direction displacement.
Thus, can with the action of Sewing machines interlock, the extraction amount of the suture when increasing and decreasing Libra 6 accordingly and rise with the position of presser bar.
In addition, because suture guiding portion 10 constitutes, the guide member 11 that the suture card is ended is set on base component 12, make base component 12 and cam body 101 butts, so when guide member 11 is installed, can also regulate the installation site on base component 12 to the top and the below of arm 3.And, utilizing base component 12 and cam body 101, base component 12 itself also can move adjusting to the top and the below of arm 3.
Thus, because guide member 11 can carry out position adjustments corresponding to the anglec of rotation of cam body 101,, can regulate the extraction amount of the suture of Libra 6 more subtly so the scope of position adjustments is bigger.
Claims (4)
1. Sewing machines, it has:
Presser bar, it can be supported on the frame up or down, and the lower end is supported with cloth pressing, and is subjected to downward elastic force;
Libra, its driving by Sewing machines is moved, and will extract out to the suture that suture needle is supplied with from bobbin; And
Suture guiding portion, it is arranged on the suture path from aforementioned bobbin to aforementioned Libra, and the suture card is ended, and can change the position of this suture guiding portion with respect to Libra,
It is characterized in that,
This Sewing machines has link gear, it has follows moving up and down of aforementioned presser bar and the control agent of displacement, this link gear links aforementioned suture guiding portion and aforementioned foot-pressing bar, makes aforementioned suture guiding portion carry out displacement to a certain direction or opposite direction with moving of control agent.
2. Sewing machines as claimed in claim 1 is characterized in that,
Aforementioned control agent has cam,
Aforementioned link gear also has:
The cam pressing plate, it is fixed on the aforementioned presser bar; And
The pretension parts, its with aforementioned suture guiding portion pretension so that this suture guiding portion and aforementioned cam butt,
Aforementioned cam-shaped becomes, and when being subjected to the pushing of aforementioned cam pressing plate by moving up and down of aforementioned presser bar, the butt position that makes aforementioned suture guiding portion and aforementioned cam is to aforementioned a certain direction or displacement in the other direction.
3. Sewing machines as claimed in claim 2 is characterized in that,
Have and regulate at interval parts, itself and aforementioned cam butt utilize self rotation to regulate distance between aforementioned cam pressing plate and aforementioned cam.
4. Sewing machines as claimed in claim 2 is characterized in that, aforementioned suture guiding portion has:
Guide member, it ends the suture card and guides to aforementioned Libra; And
Base component, it is provided with aforementioned guide member, makes this guide member can be to aforementioned a certain direction and regulate in the other direction the installation site, this base component by aforementioned pretension parts pretension with aforementioned cam butt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007088023A JP2008245731A (en) | 2007-03-29 | 2007-03-29 | Sewing machine |
| JP2007-088023 | 2007-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101275345A true CN101275345A (en) | 2008-10-01 |
| CN101275345B CN101275345B (en) | 2013-02-13 |
Family
ID=39719782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100891212A Active CN101275345B (en) | 2007-03-29 | 2008-03-28 | Sewing machine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2008245731A (en) |
| KR (1) | KR101419409B1 (en) |
| CN (1) | CN101275345B (en) |
| DE (1) | DE102008016774A1 (en) |
| TW (1) | TW200912074A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625672A (en) * | 2009-08-28 | 2012-08-01 | 瑞恩科技有限公司 | Suturing instrument having a fixing means |
| CN107938191A (en) * | 2017-12-22 | 2018-04-20 | 浙江中捷缝纫科技有限公司 | A kind of sewing machine crosses line mechanism |
| CN111936687A (en) * | 2018-03-30 | 2020-11-13 | 朴庭垷 | Sewing machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007039596A1 (en) | 2007-08-22 | 2009-02-26 | Dürkopp Adler AG | Sewing machine and method for sewing a seam beginning with such a sewing machine |
| KR100948677B1 (en) * | 2009-08-10 | 2010-03-18 | 한국봉제기술연구소 | Tension control appartus of cocoon bobin for embroidery maschine |
| DE102011005198A1 (en) * | 2011-03-07 | 2012-09-13 | Dürkopp Adler AG | Sewing machine and method for sewing a seam beginning with such a sewing machine |
| IT201900005890A1 (en) * | 2019-04-16 | 2020-10-16 | Tor Mec Ambrosi S R L | TOP SEWING CONTROL DEVICE FOR INDUSTRIAL REVERSE ARM SEWING MACHINES |
| CN115074923B (en) * | 2021-03-16 | 2023-06-06 | 杰克科技股份有限公司 | Sewing machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106690A (en) | 1980-01-29 | 1981-08-25 | Brother Ind Ltd | Automatic cotton toning device for sewing machine |
| DE3485835T2 (en) * | 1984-09-28 | 1993-03-04 | Juki Kk | THREAD FEEDING DEVICE FOR SEWING MACHINE. |
| US4690083A (en) | 1984-11-09 | 1987-09-01 | Janome Sewing Machine Co. Ltd. | Automatic upper thread tension control for a sewing machine |
| JPH0672575A (en) | 1992-06-22 | 1994-03-15 | Hankyu Zoki Kogyo Kk | Supplying method for sheet-like matter to be measured and device therefor |
| JP2007000319A (en) | 2005-06-23 | 2007-01-11 | Juki Corp | Sewing machine |
-
2007
- 2007-03-29 JP JP2007088023A patent/JP2008245731A/en active Pending
-
2008
- 2008-03-27 KR KR1020080028334A patent/KR101419409B1/en active IP Right Grant
- 2008-03-28 CN CN2008100891212A patent/CN101275345B/en active Active
- 2008-03-28 DE DE102008016774A patent/DE102008016774A1/en not_active Withdrawn
- 2008-03-28 TW TW097111366A patent/TW200912074A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625672A (en) * | 2009-08-28 | 2012-08-01 | 瑞恩科技有限公司 | Suturing instrument having a fixing means |
| CN102625672B (en) * | 2009-08-28 | 2015-07-22 | 瑞恩科技有限公司 | Suturing instrument having a fixing means |
| CN107938191A (en) * | 2017-12-22 | 2018-04-20 | 浙江中捷缝纫科技有限公司 | A kind of sewing machine crosses line mechanism |
| CN111936687A (en) * | 2018-03-30 | 2020-11-13 | 朴庭垷 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008245731A (en) | 2008-10-16 |
| CN101275345B (en) | 2013-02-13 |
| TW200912074A (en) | 2009-03-16 |
| KR20080088455A (en) | 2008-10-02 |
| DE102008016774A1 (en) | 2008-10-02 |
| KR101419409B1 (en) | 2014-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101275345B (en) | Sewing machine | |
| US9297101B2 (en) | Presser-foot lifting and lowering device for sewing machine | |
| CN101260601A (en) | Embroidery machine | |
| CN101144230A (en) | Sewing machine | |
| CN101225589A (en) | Presser foot drive structure of embroidery machine | |
| CN101285247A (en) | Sewing machine for sewing ornaments | |
| CN101144229A (en) | Sewing machine | |
| CN1924146B (en) | Sartorius and needle pole driving device for sartorius | |
| CN101424012B (en) | Hemming machine | |
| CN1924142B (en) | Round-head keyhole sartorius | |
| CN202380239U (en) | Sewing machine | |
| CN101440555A (en) | Sewing machine | |
| CN101144231A (en) | Sewing machine | |
| CN201648742U (en) | Embroidering material leading device for embroidering and sewing machine | |
| CN100389236C (en) | Thread tension device of sewing machine | |
| KR102195122B1 (en) | Sewing machine | |
| CN101046040B (en) | Wire clamping device for keyhole sewing machine | |
| CN102605561B (en) | Double-needle belt loop sewing machine | |
| CN111379082A (en) | Needle pitch adjusting device and sewing machine with same | |
| CN220789023U (en) | Automatic presser foot equipment | |
| US155932A (en) | Improvement in sewing-machines | |
| US176772A (en) | Improvement in wax-thread sewing-machines | |
| US889882A (en) | Sewing-machine for finishing buttonhole-pieces, &c. | |
| US1950336A (en) | Sewing machine | |
| US670340A (en) | Feeding mechanism for sewing-machines. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |