CN100365187C

CN100365187C - Sewing machine capable of forming taut stitch when it is used for forming quilted seam

Info

Publication number: CN100365187C
Application number: CNB021028370A
Authority: CN
Inventors: M·瓦莱; F·佩雷戈
Original assignee: Conti Complett SpA
Current assignee: Conti Complett SpA
Priority date: 2001-01-24
Filing date: 2002-01-24
Publication date: 2008-01-30
Anticipated expiration: 2022-01-24
Also published as: CN1367283A; ITMI20010128A1; ITMI20010128A4; IT1308334B1

Abstract

A sewing machine for forming quilted seam comprising a sewing needle (1), a open type needle hole (2) is provided near the top of needle, the position make the axis (1a) perpendicular to the surface supporting the quilt seam. The sewing needle (1) can be driven to reciprocate along its axis (1a) to pass through the bearing surface (3) periodically. A thread take-up cam disposed under the bearing surface (3) is formed by a fixing portion (6) having a thread box (8) for taking up thread and a rotary portion (7) capable of being driven around the axis. The rotary portion (7) bearing can hook up with the lower loop buckle (11) under the bearing surface (3) so as to put the sewing thread (12) into the thread box (8) formed in the fixing portion (6) of thread take-up cam. Also provided is a pneumatic tensioners (14, 15, 16) for tensioning the sewing thread under the bearing surface (3).

Description

Can form the Sewing machines of stitching when being used to form the QUILTED STITCH seam very neatly

(1) technical field

The present invention relates to a kind of Sewing machines that is used to form QUILTED STITCH (running stitch) seam.

(2) background technology

A kind of Sewing machines that forms the linear slit of so-called QUILTED STITCH is well-known; This linear slit is that the solid wire by the predetermined length that is called backguy (draw) is formed, and this seam can replace visible stitching by many both sides at the fabric that is sewed and be constituted.

One of this class machine is at US-4, discloses to some extent in 122,787, and it consists essentially of a suture needle with axis of approximate vertical, is provided with an open type pinprick near the suture needle top, and the orientation of suture needle is basically perpendicular to by the area supported at seam sewing place its axis.

Can drive suture needle, it is moved back and forth along its axis, so that pass the sewing that is placed on the area supported periodically.A take-up wheel is arranged below area supported, and it is arranged in the plane that is basically parallel to the suture needle axis, and its orientation makes its axis be substantially perpendicular to the axis of suture needle.Such wheel is made of a standing part and a pivotable parts, in standing part, has one to be used to store the Storage Box or the line box (magazine) of provoking line, can drive this pivotable parts, makes its axis rotation around self.Coaxial being installed on the driving shaft of pivotable parts of wheel, it can be driven and with the synchronized movement of suture needle ground around self axis rotation, in peripheral edge margin, have a button circle device or looper (looper) or claim to buckle down circle device (following looper), because the rotation of the pivotable parts of wheel and the motion of suture needle, this button circle device hooks and is carried to the line of area supported below by pin and it is provoked, and line is entered be arranged on the line box inside of wheel standing part.

Also having some suture operation elements and another in this machine buckle circle device (looper) or deserves to be called to buckle and enclose device, the suture operation element is positioned at the area supported below, and another button encloses device or go up the top that button circle device is provided with area supported, transverse to suture needle and be designed to hook by suture needle and be carried to coil on the area supported, and, maintained this coil when the circle device is provoked when buckleing under the coil quilt.

Basically, this machine carries out work with the nipped backguy of one end (predetermined length).In the first step of operation cycle, the sewing that is stitched is passed in the suture needle that is installed with the suture of close backguy pinching end, has a coil below area supported.

Hooked because the circle device buckle in the rotation of pivotable parts of wheel, this coil down, make all redundances of backguy (predetermined length) be loaded into the standing part that is positioned at wheel the line box and with the suture needle disengagement that is thus lifted on the area supported.

After quilt seam sewing took a step forward forward, suture needle and its pinprick dropped under the area supported together again, hook suture, and were with a coil to being stitched on the sewing in the step in returning subsequently.This coil is hooked by the last circle device of buckleing, and after sewing had advanced the another step, sewing was passed in suture needle again, a coil was taken to the below of area supported.This coil is buckled the circle device down and is hooked, and throws off with suture needle.When following button circle device is rotated further, provoke that part between the free end that is positioned at pinprick and backguy (predetermined length) of suture, it is pulled out and the line box of the standing part of taking turns of again it being packed in.With the method, machine processes the linear slit that is made of many stitchings with single suture, and as seen the stitching of seam replaces on by the outside of seam sewing and inboard, and promptly stitching is formed by so-called QUILTED STITCH.

As time goes on, discovery will improve this machine, mainly is quality and the precision that improves linear slit.

(3) summary of the invention

The present invention aims to provide a kind of Sewing machines that forms the QUILTED STITCH seam, and this Sewing machines can stitch out very neat stitching.

In this purpose, an object of the present invention is to provide a kind of Sewing machines that forms the QUILTED STITCH seam, when forming stitching, this sewing function guarantees that suture has tension force quite uniformly.

Another object of the present invention provides a kind of Sewing machines that forms the QUILTED STITCH seam, and when sewing, it can use up the whole length of almost backguy (draw), thereby can save the time and materials of sewing.

A further object of the present invention provides a kind of Sewing machines, as long as existing sewing machine is carried out the quite simple lower transformation of expense, just can obtain this quilting machines of the present invention.

Will this target and these and other purpose be to realize by a Sewing machines that forms the QUILTED STITCH seam after this becoming more clearly, this Sewing machines comprises: a suture needle, one open type pinprick is set near the top of suture needle, its orientation makes its axis be substantially perpendicular to supporting by the surface of seam sewing, described suture needle can be driven along self axis and move back and forth, to pass described area supported periodically and to be stitched sewing; One is arranged on the take-up wheel of described area supported below, and it is arranged in the plane of the axis that is parallel to described suture needle basically, and its orientation makes its axis be substantially perpendicular to the axis of described suture needle; Described take-up wheel is made of a standing part and a pivotable parts, in standing part, has one to be used to store the line box or the Storage Box of provoking line, and pivotable parts can be driven in rotation around self axis; Coaxial being installed on the driving shaft of pivotable parts of described take-up wheel, and driving shaft can be driven in rotation around the synchronized movement of self axis and described suture needle, pivotable parts is provided with button circle device, following button circle device can hook the coil that is taken to described area supported below by described suture needle, be formed on described line box in the take-up wheel standing part so that suture packed into, it is characterized in that it also comprises described area supported below by the pneumatic tensioning device of tensioning in addition of that part of suture between seam sewing and the described take-up line box.

(4) description of drawings

By the preferable but narration of not exclusive embodiment to Sewing machines of the present invention, the example of and this embodiment illustrated in the accompanying drawings as non-limitative example, it is more clear that other features and advantages of the present invention will seem, in the accompanying drawing:

Fig. 1 is a front view of forming the part of machine of the present invention, and these parts are arranged on by the area supported below of seam sewing, wherein only partly shows the standing part of take-up wheel;

Fig. 2 is the front view that part is cut open, ratio is amplified that is similar to the take-up wheel standing part of Fig. 1;

Fig. 3 is the cutaway view that dwindles along the ratio of the line III-III intercepting of Fig. 2;

Fig. 4 is the view that the ratio of Fig. 3 details is amplified.

(5) specific embodiment

Consult accompanying drawing, for the sake of simplicity, the part of Sewing machines of the present invention only is shown, Sewing machines comprises known suture needle 1, and a pinprick 2 that opens wide is in front arranged near its top, and the orientation of suture needle makes its axis 1a be substantially perpendicular to by the area supported 3 of seam sewing 4.

Drive suture needle 1, it is preferably vertically moved back and forth, along its axis 1a so that pass preferably horizontally disposed area supported 3 periodically.

There is a total take-up wheel of representing with label 5 below of area supported 3, and it is arranged on one and is basically parallel in the plane of axis 1a of suture needle 1, and its orientation makes the axis 5a of take-up wheel be basically perpendicular to the axis 1a of suture needle 1.

Take-up wheel 5 can be actuated to constitute around the rotating part 7 that axis 5a rotates by a standing part 6 and.The standing part 6 of take-up wheel 5 has the circular contour around axis 5a, and this profile is discontinuous.Described discontinuous part is near the working region of suture needle 1.

Peripheral edge margin near the standing part 6 of take-up wheel 5 has the Storage Box or the line box 8 of provoking line, at an end of the standing part 6 at described discontinuous part place one inlet 8a is arranged.

The pivotable parts 7 of take-up wheel is co-axially mounted on the driving shaft 10, and driving shaft 10 and the motion of suture needle can synchronously be actuated to around consistent with axis 5a self axis rotation.Pivotable parts 7 supportings one button circle device or looper 11, a part of 12a that this button circle device 11 constitutes the following button circle device of Sewing machines and can hook suture 12, when the below of area supported 3 was taken in the suture needle 1 after suture 12 is passed the quilt seam sewing 4 that is shelved on the area supported 3 to, this part of suture was stretched out from pinprick 2 along a side of suture needle 1.

According to the present invention, Sewing machines comprises pneumatic tensioning device, and this pneumatic tensioning device tensioning is below the area supported 3, by seam sewing 4 and provoke that part of the line 12 between the line box 8 of line.

In particular, line box 8 comprises a passage 13, and it forms the standing part 6 of a circular path and close take-up wheel 5 around axis 5a periphery forms.Described passage 13 is openings at the discontinuous place of the standing part 6 of take-up wheel 5 with in the lateral surfaces of described standing part 6.

Pneumatic tensioning device comprises charge air flow is expelled to device in the passage 13, and injection direction and button circle device 11 down are corresponding with pack into the direction of passage 13 of suture 12.

Be preferably, the air injection device comprises a steam line 14, and this pipeline is formed in the standing part 6 of take-up wheel 5.Described pipeline 14 is preferably along one being that center, radius are arranged less than the circular arc of passage 13 with axis 5a, and such pipeline 14 is connected in device such as the supply pressurized air of pressurized air distributing pipe or compressor by the connector 15 that is connected in standing part 6.

Pipeline 14 is connected with passage 13 by at least one transmission pipeline 16.The transmission direction that transmission pipeline 16 enters 13 outlet and suture 12 are corresponding by the direction that button circle device 11 down inserts passages 13.

Preferably, be provided with and a plurality ofly lead to the transmission pipeline 16 of passage 13 from pipeline 14, transmission direction and suture 12 are corresponding by the direction that button circle device 11 down inserts passages 13.

Passage 13 has towards axis 5a side and partly passage 13 is divided into two bossings 17 that adjoin part, and the 13a of first is near rotating part 7, and adjoins with the transverse opening 20 of passage 13, and second portion 13b is farther from rotating part 7.These two part 13a and 13b under any circumstance interconnect, so that the suture 12 that inserts passages 13 through transverse opening 20 because button encloses the rotation of device 11 enters part 13b from part 13a.The second portion 13b of transmission pipeline 16 admission passages 13.

Machine also has by all line executive components that is positioned at the area supported below and another and is arranged on area supported top buckleing circle device (looper) or go up buckle and enclose device transverse to suture needle 1, last button circle device is designed to hook by suture needle 1 and is carried to suture above the area supported 3, and maintain suture when down button circle device 11 is provoked when suture, for example at US-4,122,787 disclosed and illustrate like that.For the sake of simplicity, not shown described suture operation element.

Formation for stitching, the operation of Sewing machines of the present invention is substantially similar to US-4,122,787 disclosed machines, difference is, when suture 12 is inserted into passage 13, enter pressurized air tensioning suture 12 in the described passage 13 by all pipelines 16, this tension force is delivered to that part of by between seam sewing 4 and the passage 13 of suture.

By this tension force, just can avoid the abnormal lax of suture 12, make stitching more regular more neat.

In addition, owing to be tensioned by suture 12, machine of the present invention can make the whole backguy length of the suture of using up when sewing, reduce thus and form the required backguy number of linear slit, also reduces the quantity of sewing time and required suture.

It should be appreciated that the pneumatic tensioning of suture 12 is carried out under these circumstances: suture is contained in the standing part 6 by rotating part 7 and carries out in part 13a, and carries out in part 13b inboard when standing part 6 is extracted out when suture.In this way, the mutual interference mutually between the part of moving back outlet box 8 of the part that enters line box 8 that just can avoid suture 12 and suture 12.

Have found that in practice Sewing machines of the present invention can realize above-mentioned target and purpose fully, that is because it can guarantee very regularly and very fitly to form stitching by the pneumatic tensioning of sewing thread.

So the Sewing machines of design can also have multiple change and remodeling except the foregoing description, and all these drops within the scope of appended claims, and wherein all details also can be replaced by other technical equivalences part.

In practice, used material and the size state of development that can depend on requirement and technology.

Claims

1. one kind forms the Sewing machines that QUILTED STITCH stitches, it comprises: a suture needle (1), one open type pinprick (2) is set near the top of suture needle, its orientation makes its axis (1a) be stitched the surface (3) of sewing perpendicular to supporting, described suture needle (1) can be driven along self axis (1a) and move back and forth, to pass described area supported (3) periodically and to be stitched sewing; One is arranged on the take-up wheel (5) of described area supported (3) below, and it is arranged on one and is parallel in the plane of axis (1a) of described suture needle (1), and its orientation makes its axis (5a) perpendicular to the axis (1a) of described suture needle (1); Described take-up wheel (5) is by a standing part (6) and a pivotable parts (7) formation, in standing part, a line box (8) that is used to provoke line arranged, and described pivotable parts can be driven in rotation around self axis (5a); Coaxial being installed on the driving shaft (10) of pivotable parts (7) of described take-up wheel (5), this driving shaft can around the synchronized movement of self axis and described suture needle (1) be driven in rotation, this pivotable parts is provided with one can hook the following circle device (11) of buckleing of coil (12a) that is carried to the suture (12) of described area supported (3) below by described suture needle (1), be formed in the described line box (8) in take-up wheel (5) standing part (6) so that suture (12) packed into, it is characterized in that, it also comprises making and is positioned at described area supported (3) below, at the pneumatic tensioning device (14 that is stitched that part of suture tensioning between sewing and the described take-up line box (8), 15,16).

2. Sewing machines as claimed in claim 1 is characterized in that, the standing part (6) of described take-up wheel (5) is around forming a circular path at described driving shaft (10) axis, and has a discontinuous part around in described suture needle (1) working region; Form the inlet (8a) of described take-up line box (8) at described discontinuous part place, the described line box (8) that is used to provoke line comprises a circular channel (13) that forms near the periphery of the standing part (6) of take-up wheel (5); Described pneumatic tensioning device comprises charge air flow is expelled to device (14) in the described passage (13) that injection direction is corresponding with the direction of the described described passage (13) that suture (12) is packed into of button circle device (11) down.

3. Sewing machines as claimed in claim 2, it is characterized in that, described air injection device comprises a steam line (14), this pipeline is formed on the described standing part (6) of take-up wheel (5) and is connected in the device of supply pressurized air, described steam line (14) is connected at least one transmission pipeline (16) that leads to described passage (13), and transmission direction is inserted the direction of described passage (13) corresponding to described button circle device (11) down with suture (12).

4. Sewing machines as claimed in claim 3, it is characterized in that, described steam line (14) is connected in a plurality of transmission pipelines (16) that lead to described passage (13), and transmission direction is inserted the direction of described passage (13) corresponding to described button circle device (11) down with suture (12).

5. Sewing machines as claimed in claim 4 is characterized in that, described passage (13) is divided into two interconnective parts of adjoining by intermediate projections part (17); First (13a) is along the periphery lateral open of the described standing part (6) of take-up wheel (5), and near the described pivotable parts (7) of take-up wheel (5), the described pivotable parts (7) that second portion (13b) leaves take-up wheel (5) with respect to described first (13a) is far away, and described transmission pipeline (16) terminates in the described second portion (13b) of passage (13) and locates.