CN102002826B

CN102002826B - Sewing machine

Info

Publication number: CN102002826B
Application number: CN201010255393.2A
Authority: CN
Inventors: P·维比哈尔; E·多考皮尔
Original assignee: Duerkopp Adler AG
Current assignee: Dukepu Aihua Co ltd
Priority date: 2009-08-28
Filing date: 2010-08-16
Publication date: 2014-03-26
Anticipated expiration: 2030-08-16
Also published as: EP2290142B1; KR20110023738A; CN102002826A; DE102009039252A1; KR101757919B1; EP2290142A2; TW201111575A; TWI515347B; EP2290142A3

Abstract

A sewing machine has at least one needle bar mounting a sewing needle for formation of a joint in a passing region, and at least one transporter transporting a sewing material at the passing region. A thread-sectioned blade transmission mechanism (29) comprises a connecting rod (28). The transmission mechanism (29) is connected with a thread-sectioned blade (49) and a blade drive device. The transmission mechanism (29) is used for making the thread-sectioned blade (49) move between the resting position and the cutting-off position. A bearing support (27) of a transporter-transmission mechanism (21) is mounted on the connecting rod (28) for material transportation of the transporters. Thus the sewing machine has a compact shell near to the passing region.

Description

Sewing machines

Technical field

The present invention relates to a kind of Sewing machines with shank and conveyer.

Background technology

Such Sewing machines is at US 1,010,830 and DE 101 23 075 C1 in known.

Summary of the invention

The object of the invention is: improve the Sewing machines of the described type of beginning, make it possible to design compactly the Sewing machines housing adjacent with needle tracking region.

Described object realizes by have the Sewing machines of the feature providing in claim 1 according to the present invention.

According to the present invention, recognize: can activate with a pull bar/connecting rod supporting mass of tangential knife or wire scraper and supporting transmission device-transmission mechanism.Pull bar is driven the fact of motion and is not disturbed described dual-use function during tangent line, and this is because in the period, this does not just carry out sewing work at this (tangent line).Can omit the independent cramp bar for the supporting mass of conveyer-transmission mechanism.In needle tracking region, the free arm of the housing of Sewing machines, particularly Sewing machines can design very compactly in this case.This has realized: the housing design of Sewing machines is become can in the sewing region that is difficult to touch, complete complicated sewing task.By relative housing, fix or the relative fixing fixed body of frame, can prevent that supporting mass is shifted when pull bar is shifted, make conveyer-transmission mechanism keep static when activating tangential knife transmission mechanism.The supporting mass of conveyer-transmission mechanism is so connected with the pull bar of tangential knife transmission mechanism, with respect to Sewing machines housing, holding position is constant vertically when the pull bar of tangential knife transmission mechanism is axially displaced to make supporting mass, makes the actuating (motion) of tangential knife to transmit decoupling with the sewing being undertaken by conveyer.Particularly can also avoid: the actuating of conveyer is also automatically caused to the actuating to tangential knife.The mode of supporting physical efficiency so that lever exists, and described actuator lever is connected with a conveyer support by an articulated structure with hinge axes.

In principle, according to Sewing machines of the present invention, needn't be equipped with complete thread cutting device.According to the Sewing machines of claim 2, be equipped with a thread cutting device, this has expanded the functional of Sewing machines.Can by a drive unit, make pull bar be shifted to carry out tangent line by tangential knife transmission mechanism.Shift drive can be designed to pneumatic actuating device, stepper motor or can be driven lifting magnet/stroke magnet of control.

According to the tangential knife regulating element of claim 3, realized the position of regulation tangential knife with respect to Sewing machines needle tracking forming portion part position, realized especially transverse to sewing direction and regulated tangential knife.

According to the relative housing of claim 4 fix or relatively the fixing conveyer regulating element of frame realized regulation conveyer and with respect to the needle tracking of Sewing machines, formed the position of parts, realized especially transverse to sewing direction and regulated conveyer, described conveyer can be shifted by conveyer transmission mechanism.

According to the public bearing unit of claim 5, realized the public adjusting to shuttle/projectile shuttle/hook coil apparatus (Greifer) and tangential knife.This point can utilize tangential knife regulating element to realize, and described tangential knife regulating element has the function of shuttle regulating element simultaneously.Shuttle can be vertical shuttle, the shuttle rotating around vertical axis.

According to being arranged to the fixing anti-phase cutter of relative shuttle and can the displacement by tangential knife regulating element being prescribed its position together with tangential knife of claim 6, described tangential knife owing to thering is common support structure with shuttle same relative shuttle fix.Thus after the displacement of tangential knife regulating element, without making again tangential knife carry out relative positioning with respect to anti-phase cutter.

In the arm-type Sewing machines of the freedom according to claim 7, the advantage that forms Sewing machines housing compact in region at needle tracking can work particularly well.Free arm for example can allow to spread tubular sewing.

According to Claim 8, two-needle sewing machine particularly can be used in manufactures in circular or tubular filter.

According to two of claim 9 thread cutting devices, improved the functional of two-needle sewing machine.

According to two of claim 10 tangential knife regulating elements, realized the position of stipulating independently two tangential knifes.In this case, can also make the tangential knife of two-needle sewing machine and affiliated each free public bearing unit of shuttle support.Thus, can realize by there is the tangential knife regulating element of shuttle regulating element function simultaneously and regulate simply shuttle distance each other.

According to the adjustment of can contact having simplified Sewing machines of the regulating element of claim 11.

Accompanying drawing explanation

By accompanying drawing, elaborate embodiments of the invention below.Wherein show:

Fig. 1 illustrates the freely front view of arm-type Sewing machines of single needle;

Fig. 2 is illustrated in the partial enlarged drawing in the region of free arm end of Fig. 1;

Fig. 3 illustrates the tangential knife transmission mechanism of the free arm-type Sewing machines of single needle and the parts of conveyer-transmission mechanism to be similar to the view of Fig. 2;

Fig. 4 illustrates the parts shown in Fig. 3 with the perspective view from top oblique view;

Fig. 5 illustrates according to the cutaway view of the line V-V in Fig. 3;

Fig. 6 illustrates according to the cutaway view of the line VI-VI in Fig. 5;

Fig. 7 illustrates the freely free arm end of arm-type Sewing machines of crosspointer with perspective view; With

Fig. 8 illustrates according to the tangential knife transmission mechanism of the free arm-type Sewing machines of the crosspointer of Fig. 7 and the parts of conveyer-transmission mechanism to be similar to the view of Fig. 4.

The specific embodiment

Freely arm-type Sewing machines 1 has a substrate 2, and this substrate has the arm 4 by its upwardly extending column 3 and bent angle.Substrate 2 become free arm 5 with the opposed partial design of arm 4, make Sewing machines 1 for example can be used, for example, in rolling work, quilting work and the installment work on sack and chest.Free arm 5 is all freely transverse to arm direction towards all sides, and its permission is moved tubular sewing on this free arm 5 to, thus reach utilize traditional C shape Sewing machines inaccessiable sewing region and for example can in this region, form around linear slit.

Upper arm 4 stops in head 6.In upper arm 4, in the mode that can rotate, support a main shaft schematically showing 7 in Fig. 1.This main shaft 7 drives a crank gear with thread take-up tension lever/conductor rod in head 6.This crank gear is connected with the kind of drive with the shank 8 being bearing in head 6 in the axially displaced mode of energy.This shank 8 on its bottom with a pin 9.By crank gear, can make pin 9 move up and down along a vertical axis 10 (referring to Fig. 2).Pin 9 guides the sewing thread from bobbin/pipe ducting through thread tensioner 11 and thread take-up tension lever in pinprick.

The upside of free arm 5 is designed for supporting the supporting plate 12 (referring to Fig. 2) of sewing.Supporting plate 12 is divided into needle plate portion 13 and needle plate slide plate 14.Needle plate portion 13 is fixedly mounted on the housing 15 of Sewing machines 1.Needle plate slide plate 14 can right shift in Fig. 2 after unclamping fastening spring 16 (referring to Fig. 2), and makes (people) can touch the parts that are arranged on needle plate slide plate 14 belows.

Needle plate portion 13 is formed with a breach 17 that supplies bottom sewing conveyer or feeding slide block/feed dog 18 to pass in the needle tracking region of pin 9.Bottom sewing conveyer 18 has a pin hole 19 passing for pin 9.These parts are shown in broken lines in Fig. 2.

Bottom sewing conveyer 18 is for transmit sewing on sewing direction of transfer together with top sewing conveyer 20, and described sewing direction of transfer is perpendicular to the view plane of Fig. 1 and Fig. 2 and point in this view plane.

Bottom sewing conveyer 18 is implemented translatory movement along sewing direction of transfer in sewing work, and described sewing translatory movement is in the situation that guide the rotational motion by main shaft 7 to drive via the conveyer-transmission mechanism 21 being installed in free arm 5.A part for conveyer-transmission mechanism 21 is the conveyer eccentric shaft 22 (referring to Fig. 4) extending along free arm 5, and its eccentric throw E, the deviation between rotationally symmetric axis 23 and supporting axis 24 is shown in Figure 5.In addition a part for conveyer-transmission mechanism 21 is the swinging axle 24a arranging along free arm 5.Swinging axle 24a is in transmission connection by the lower shaft (not shown) of needle gage governor actuator and Sewing machines 1.By needle gage governor actuator (not shown equally in the accompanying drawings), make swinging axle 24a carry out oscillating motion around its axis 24b.By eccentric shaft 22 and the carrier 25 that is designed to slide block, the transmission stroke that can regulate is delivered to the conveyer support 26 for bottom sewing conveyer 18.Bottom sewing conveyer 18 is bearing on this conveyer support 26 in the mode that can vertically be shifted with respect to conveyer support 26.By carrier 25, make bottom sewing conveyer 18 in the corresponding transfer phase of bottom sewing conveyer 18, be lifted to the elevation-over of needle plate portion 13.The oscillating motion of swinging axle 24a is delivered on conveyer support 26 by a moving lever 26a, has so just stipulated the translatory movement of conveyer support 26, the stitch length that can correspondingly realize in sewing work.By form, be the supporting mass of another moving lever 27, the pull bar 28 extending along free arm 5 that makes conveyer support 26 and be arranged on the tangential knife transmission mechanism 29 (also will set forth) in free arm 5 is below connected.Pull bar 28 is parallel to swinging axle 24a and arranges.Pull bar 28 extends transverse to sewing direction.Moving lever 27 carries out hinged mode with the hinge axes 30 around 24 extensions of paralleling to the axis on the one hand and is connected with conveyer support 26, is connected on the other hand to carry out hinged mode around pull bar axis 31 with tangent line pull bar 28.Oscillating motion around pull bar axis 31 when moving lever 27 transmits work in bottom illustrates by double-head arrow 32 in Fig. 4.

By form, be conveyer regulating element regulation moving lever 27 axial locations along pull bar axis 31 of adjustable plate 33.For this reason, adjustable plate 33 has a fork-shaped portion 34, and this fork-shaped portion 34 is at axial both sides engagement movement bar 27.Moving lever 27 has vertically less gap in fork-shaped portion 34.Adjustable plate 33 has the fixed part 35 with hold-down screw 36, by this fixed part 35, can in the regulation axial location along free arm 5, adjustable plate 33 be fixed on housing 15.By the axial location that can stipulate thus of adjustable plate 33, just can regulation moving lever 27 and then be the axial location of conveyer support 26, and the axial location of bottom sewing conveyer 18 related to this.

Tangent line pull bar 28 is bearing in the fixing sliding sleeve 37 of a relative housing in the axially displaced mode of energy near its free end.Sliding sleeve 37 is arranged at distolateral around engaging the moving lever 27 of pull bar 28 and being designed between the tangential knife regulating element 38 of adjustable fork-shaped formula.Adjustable fork 38 is fixed on tangent line pull bar 28 and with respect to this tangent line pull bar 28 and is fixed vertically by two hold-down screws 39.At this, the end of hold-down screw 39 abut in pull bar 28 by the wall portion section 40 of milling flat, the axial range (Axialerstreckung) of described wall portion section 40 has stipulated that adjustable fork 38 is along the axial adjustment scope of pull bar 28.

Adjustable fork 38, be that the fork section 41 (referring to Fig. 5) of tangential knife regulating element is around engaging the fulcrum post 42 vertically extending.The transmission lever 43 of fulcrum post 42 and tangential knife transmission mechanism 29 is connected in mode in relative rotation.Transmission lever 43 is connected in mode in relative rotation with line cutter pin 44 again.Line cutter pin 44 vertically extends.The pin axis 45 of line cutter pin 44 is spaced apart with the pin axis of fulcrum post 42.

Line cutter pin 44 is bearing in the fixing shuttle bearing 46 of relative housing in the mode that can rotate around pin axis 45.Shuttle bearing 46 visible part only in Fig. 6.Shuttle bearing 46 is simultaneously for supporting the shuttle 47 of Sewing machines 1.Shuttle 47 has a band for catching the shuttle body (referring to Fig. 6) at the shuttle tip 48 of sewing thread.Shuttle 47 can rotate around a vertical shuttle axis, and wherein the rotary actuation of shuttle 47 is drawn by the motion of main shaft 7 again.

Line cutter pin 44 and a tangential knife or wire scraper 49 are connected in mode in relative rotation, and the fixing anti-phase cutter 50 of described tangential knife or wire scraper 49 shuttle bearing relative to cooperates to cut off suture.Anti-phase cutter 50 is fixed on a supporting plate 51.Supporting plate 51 is fixedly connected with shuttle bearing 46 again.

By

housing window

52 and 53, from the same side of Sewing machines 1, can touch conveyer regulating element, be adjustable plate 33 respectively, can touch again tangential knife regulating element 38, be adjustable fork (referring to Fig. 2).

When Sewing machines 1 carries out sewing work, in the needle tracking region of sewing, form linear slit.In sewing work, from main shaft 7, via lower shaft, make swinging axle 24a carry out oscillating motion by needle gage governor actuator.By moving lever 26a, this oscillating motion is delivered to conveyer support 26, by this conveyer support 26, is delivered on bottom sewing conveyer or feeding slide block 18.Due to moving lever 26a, to be fixed on swinging axle 24a upper, and conveyer support 26 vertically, fix transverse to sewing direction.In addition, conveyer eccentric shaft 22 rotations when Sewing machines 1 carries out sewing work, by the transmission stroke of carrier 25 regulation conveyer supports 26.By the driving of two

axles

22 and 24a, bottom sewing conveyer 18 is carried out translatory movement to transmit sewing on sewing direction.

In order to regulate conveyer support 26 along the axial restraint of free arm 5, in order to stipulate that bottom sewing conveyer 18 is transverse to the position of sewing direction, first dismantle moving lever 26a fixing on swinging axle 24a.Then, by housing window 52, dismantle the hold-down screw 36 of adjustable plate 33, then can make adjustable plate 33 along double-head arrow 54 displacements in Fig. 2.Be shifted correspondingly with this, moving lever 27, conveyer support 26 and moving lever 26a are shifted transverse to sewing direction, thereby can regulate bottom sewing conveyer 18.

In order to regulate the position of shuttle 47 and the position of adjusting tangential knife 49, can dismantle two hold-down screws 39 by housing window 53, then can make to pitch 38 and with respect to pull bar 28, move vertically, this makes shuttle 47, tangential knife 49 and anti-phase cutter 40 correspondingly change transverse to the position of sewing direction.

During sewing work, tangent line pull bar 28 keeps axial location (constant), and has the function for the cramp bar of adjustable fork 38 and moving lever 27.

For carrying out tangent line, activate a unshowned pneumatic linear actuator in the accompanying drawings, described pneumatic linear actuator make pull bar 28 between resting position and off-position along double-head arrow 55 displacements in Fig. 4.Alternatively, the displacement of pull bar 28 between resting position and off-position also can realize by stepper motor or lifting magnet.The displacement of pull bar 28 from resting position to off-position make to pitch 38 and the fulcrum post 42 that drives correspondingly axially displaced, wherein, due to this motion of fulcrum post 42, make line cutter pin 44 around pin axis 45, swing (referring to the double-head arrow 56 in Fig. 4) in shuttle bearing 36.This makes tangential knife 49 cut off accordingly oscillating motion with respect to anti-phase cutter 50, thereby cuts off line between two cuttves 49,50.During pull bar 28 is axially displaced, pull bar 28 slides with respect to sliding sleeve 37 on the one hand, slides on the other hand with respect to moving lever 27.When pull bar 28 is axially displaced, moving lever 27 is with respect to housing 15 holding position (constant) vertically, because the fork-shaped portion of the adjustable plate 33 that this moving lever 27 is fixed by relative housing 34 keeps.That is, adjustable plate 33 during tangent line simultaneously as for fixing moving lever 27 and then be the fixed body of the axial location of bottom sewing conveyer 18.

In Sewing machines 1, pull bar 28 has the function of power transmission in tangential knife transmission mechanism simultaneously, and the supporting functions of support motion bar 27 and supporting tangential knife regulating element 38.

By Fig. 7 and Fig. 8, set forth the freely crosspointer embodiment of arm-type Sewing machines 57 below.There is identical Reference numeral with the parts of setting forth referring to figs. 1 to Fig. 6 hereinbefore and the corresponding parts of function and function, no longer it is described in detail.

Sewing machines 57 has a common shank 58, and described shank 58 has the supporting mass 59 for two sewing needles (not shown in the accompanying drawings) of two-needle sewing machine 57.In Sewing machines 57, be that two sewing needles are all equipped with bottom sewing conveyer or feeding slide block 18, described bottom sewing conveyer has corresponding top sewing conveyer 20, and described top sewing conveyer 20 is corresponding has two for the pinprick of two sewing needle (not shown).It is the independent shuttle 47 of each root outfit in two sewing needles.Each in two shuttles 47 is bearing in independent shuttle bearing 46, wherein in Fig. 8, can find out the shuttle bearing 46 that is attached to the shuttle 47 that is positioned in the figure left side.Two shuttle bearings 46 are the parts that are designed to be separated from each other.

Two bottom sewing conveyers 18 of Sewing machines 57 are connected with conveyer support 26.The structure of conveyer support 26 and conveyer-transmission mechanism 21 with corresponding according to the structure of the parts in the Sewing machines 1 of Fig. 1 to Fig. 6.Each root in two pins of Sewing machines 57 all has a tangential knife setting like this.Tangential knife 49 and affiliated tangential knife transmission mechanism 29 with above about corresponding according to the tangential knife 49 described in the Sewing machines 1 of Fig. 1 to Fig. 6 and affiliated tangential knife transmission mechanism 29.

In Sewing machines 57, pull bar 28 extends to and exceeds the position of moving lever 27 and on its free end, have another adjustable fork 38 ', described another adjustable fork 38 ' belongs to another tangential knife transmission mechanism 29 for the second tangential knife 49, and described the second tangential knife 49 cooperates with the second anti-phase cutter 50.Another is adjustable, and fork 38 ' also can be fixed in the axial location of a regulation by two screws 39 along pull bar 28, as set forth about Sewing machines 1 above.For the hold-down screw 39 of described another adjustable fork 38 ' is provided with another housing window 60, by this another housing window 60, can touch from the same side of Sewing machines housing 15 hold-down screw 39, as housing window 52,53.By dismantling hold-down screw 39, particularly can stipulate the phase mutual edge distance of two shuttles 47 of Sewing machines 57.

The sewing work of Sewing machines 57 is corresponding with sewing work and the tangent line work of setting forth about Sewing machines 1 above with tangent line work.When tangent line, by pull bar 28, activate two tangential knifes 49 of Sewing machines 57 simultaneously.

Claims

1. a Sewing machines (1; 57), have:

-housing (15),

-at least one is for the fixing shank (8) of sewing needle (9), and described sewing needle is for forming linear slit in needle tracking region,

-at least one is for transmit the conveyer (18,20) of sewing in described needle tracking region,

-thering is the tangential knife transmission mechanism (29) of pull bar (28), described tangential knife transmission mechanism can be connected with driving device for cutter with tangential knife (49), for described tangential knife (49) is shifted between resting position and off-position,

-wherein, for transmitting the conveyer (18 of sewing, 20) comprise top sewing conveyer (20) and bottom sewing conveyer (18), supporting mass (27) for the conveyer-transmission mechanism (21) of the translatory movement of bottom sewing conveyer (18) is bearing in described pull bar (28)

-wherein, described supporting mass (27) is connected in the mode that can so be shifted with described pull bar (28), and holding position is constant vertically when the pull bar (28) of described tangential knife transmission mechanism (29) is axially displaced to make described supporting mass (27).

2. Sewing machines according to claim 1, is characterized in that, described Sewing machines has the thread cutting device of at least one band tangential knife (49), and described tangential knife (49) cooperates to carry out tangent line with an anti-phase cutter (50).

3. Sewing machines according to claim 2, it is characterized in that, described tangential knife transmission mechanism (29) has one and is fixed on the tangential knife regulating element (38) on described pull bar (28) in the mode that can regulate along described pull bar (28), by regulating described tangential knife regulating element can stipulate the range of movement of described tangential knife (49).

4. Sewing machines according to claim 1, it is characterized in that, described Sewing machines has one and is fixed on the conveyer regulating element (33) on Sewing machines housing (15) in the mode that can regulate along described pull bar (28), by regulating described conveyer regulating element can stipulate the axial location of described supporting mass (27).

5. Sewing machines according to claim 2, it is characterized in that, described Sewing machines has one and is fixed on the conveyer regulating element (33) on Sewing machines housing (15) in the mode that can regulate along described pull bar (28), by regulating described conveyer regulating element can stipulate the axial location of described supporting mass (27).

6. according to the Sewing machines described in any one in claim 1 to 5, it is characterized in that, described Sewing machines has one for Sewing machines (1; 57) shuttle (47) and attaching troops to a unit in the public bearing unit (46) of the tangential knife (49) of this shuttle (47).

7. Sewing machines according to claim 6, is characterized in that, the anti-phase cutter (50) of described tangential knife (49) is arranged to relative shuttle and fixes.

8. according to the Sewing machines described in any one in claim 1 to 5, it is characterized in that, described Sewing machines is designed to freely arm-type Sewing machines.

9. according to the Sewing machines described in any one in claim 1 to 5, it is characterized in that, described Sewing machines is designed to two-needle sewing machine (57).

10. Sewing machines according to claim 9, is characterized in that, for each shank is equipped with an independent thread cutting device, described thread cutting device is with tangential knife, and described tangential knife cooperates to carry out tangent line with anti-phase cutter (50).

11. Sewing machiness according to claim 10, it is characterized in that, described tangential knife transmission mechanism (29) has two and is fixed on the tangential knife regulating element (38 on described pull bar (28) in the mode that can regulate along described pull bar (28), 38 '), by regulating described in described tangential knife regulating element energy separate provision the range of movement of corresponding in two tangential knifes (49).

12. Sewing machiness according to claim 4, is characterized in that, described Sewing machines has the thread cutting device of at least one band tangential knife (49), and described tangential knife (49) cooperates to carry out tangent line with an anti-phase cutter (50); Described tangential knife transmission mechanism (29) has one and is fixed on the tangential knife regulating element (38) on described pull bar (28) in the mode that can regulate along described pull bar (28), by regulating described tangential knife regulating element can stipulate the range of movement of described tangential knife (49).

13. Sewing machiness according to claim 4, is characterized in that, described Sewing machines is designed to two-needle sewing machine (57); For each shank is equipped with an independent thread cutting device, described thread cutting device is with tangential knife, described tangential knife cooperates to carry out tangent line with anti-phase cutter (50), described tangential knife transmission mechanism (29) has two and is fixed on the tangential knife regulating element (38 on described pull bar (28) in the mode that can regulate along described pull bar (28), 38 '), by regulating described in described tangential knife regulating element energy separate provision the range of movement of corresponding in two tangential knifes (49).

14. according to the Sewing machines described in claim 12 or 13, it is characterized in that, from Sewing machines (1; 57) the same side can touch conveyer regulating element (33) and tangential knife regulating element (38; 38,38 ').