CN1904181A - Keyhole sartorius - Google Patents

Keyhole sartorius Download PDF

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Publication number
CN1904181A
CN1904181A CN 200610105734 CN200610105734A CN1904181A CN 1904181 A CN1904181 A CN 1904181A CN 200610105734 CN200610105734 CN 200610105734 CN 200610105734 A CN200610105734 A CN 200610105734A CN 1904181 A CN1904181 A CN 1904181A
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China
Prior art keywords
shank
countershaft
sewing machine
main shaft
fulcrum
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Granted
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CN 200610105734
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Chinese (zh)
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CN1904181B (en
Inventor
柴田到
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Brother Industries Ltd
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Brother Industries Ltd
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Publication of CN1904181B publication Critical patent/CN1904181B/en
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Abstract

The present invention relates to a keyhole sewing machine, a vertical movement mechanism, a needle cycloidal mechanism and a picking thread mechanism are arranged in the casing, characterized in that a rotary spindle driven by the motor, a countershaft crossed with the spindle, a gear mechanism interlocked with the spindle and the countershaft are provided in the casing.

Description

Button holing sewing machine
Technical field
The present invention relates to a kind of button holing sewing machine that shank up-down mechanism, needle swinging mechanism and thread take-up mechanism are installed in casing portion.
Background technology
In the past, in the button holing sewing machine of making the round end keyhole stitch seam, drive the shank up-down mechanism by the main axis rotation that is driven by electrical motor of sewing machine, this shank up-down mechanism moves up and down shank.Again, the rotation by main shaft comes the driving needle swinging mechanism, and this needle swinging mechanism makes the shank swing.And, driving thread take-up mechanism by the rotation of main shaft, this thread take-up mechanism makes the thread take-up tension lever swing.
For example, openly put down in the round end button holing sewing machine that 7 years No. 313772 communique put down in writing in Japan special permission, with the direction of casing minister degree direction quadrature on set main shaft, the shank up-down mechanism utilizes the revolving force of this main shaft to make the swing of shank swing arm, shank moves up and down.The eccentric cam affixed with main shaft makes the swing arm swing, and needle swinging mechanism is followed this swing and made the shank swing.This round end button holing sewing machine also is to utilize main shaft to make the structure of shank up-down mechanism and needle swinging mechanism action.
In aforesaid formation, because of coming driving needle swinging mechanism and shank up-down mechanism both sides by main shaft, so needle swinging mechanism and shank up-down mechanism both sides' action inertia force is very big to the main axis rotation effect, like this, main shaft is difficult to rotation at a high speed, needle swinging mechanism and shank up-down mechanism also are difficult to high speed motion, and existence can not realize the problem of sewing speed high speed.
Summary of the invention
The object of the present invention is to provide a kind of high speed motion that can realize needle swinging mechanism and shank up-down mechanism, and can make the button holing sewing machine of sewing speed high speed.
Button holing sewing machine of the present invention, shank up-down mechanism, needle swinging mechanism and thread take-up mechanism are installed in casing portion, it is characterized in that, in described casing portion, be provided with: by the gear mechanism that electrical motor of sewing machine drives the main shaft of rotation, the countershaft that sets with this main shaft crossings on different level shape and linkage type are connected described main shaft and countershaft.
Adopt this formation, the rotation of electrical motor of sewing machine driving main shaft, main shaft drives the countershaft rotation by gear mechanism.Can separately drive shank up-down mechanism, needle swinging mechanism and thread take-up mechanism by this main shaft and countershaft, can realize the high speed motion of needle swinging mechanism and shank up-down mechanism, can make the sewing speed high speed.
Description of drawings
Fig. 1 is the stereogram of the electronics round end button holing sewing machine in the embodiment of the invention.
Fig. 2 is the side view of the electronics round end button holing sewing machine in the embodiment of the invention.
Fig. 3 is the stereogram of rotating mechanism and bending needing mechanism.
Fig. 4 is the stereogram of the internal mechanism of casing portion.
Fig. 5 is the side view of the internal mechanism of casing portion.
Fig. 6 is the vertical view of the internal mechanism of casing portion.
Fig. 7 is the front view of the internal mechanism of casing portion.
Fig. 8 is the vertical profile side view along the VIII-VIII line of Fig. 6.
Fig. 9 is the vertical profile rearview along the IX-IX line of Fig. 5.
Figure 10 is the cross-sectional vertical view along the X-X line of Fig. 5.
Figure 11 is the exploded perspective view of pin pendulum body.
The schematic diagram that Figure 12 does for the pin swing of explanation shank.
The specific embodiment
Illustrate in greater detail the present invention with reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, electronics round end button holing sewing machine (being designated hereinafter simply as button holing sewing machine) 1 is carried on the sewing machine table 4, has from its top, rear the casing portion 3 of forwards extending continuously on the base plate 2 of rectangular case shape roughly integratedly.
Upside at this sewing machine table 4 is provided with guidance panel 5, be used for indication and select various operations such as a property selection from multiple round end keyhole stitch seam, simultaneously the control device 6 that constitutes by microcomputer that is provided with at the downside of sewing machine table 4 that each mechanism action of control uses.
Be provided with the shank 8 of the hollow form (tubulose) that the lower end is installed with suture needle 7 at the leading section of casing portion 3, this shank 8 can move up and down by shank up-down mechanism 36 described later.This shank 8 can be swung between left side swing position (interior pin position) and right side swing position (outer pin position) with the regulation amplitude by needle swinging mechanism 60 described later (as shown in Figure 4).
As shown in Figure 3, in base plate 2, be provided with electrical motor of sewing machine (not shown) and curved needle seat 11.Electrical motor of sewing machine is moving up and down of shank 8 and swings and the drive source of making mechanism of driven in synchronism bending needing mechanism 10 etc.The bending needing mechanism 10 that has with shank 8 pairing left and right looper (not shown) in opposite directions is installed on curved needle seat 11, and this curved needle seat 11 can rotate around vertical axis integratedly by rotating mechanism 15 described later.
Pass the upper thread of supplying with from the line supply source in described suture needle 7, passed bottom line at the leading section of left looper, right looper is stranded with bottom line when inweaving the upper thread ring, forms the wire loop joint portion.
Rotating mechanism 15 is made of θ direction drive motor 21 and the gear mechanism be located in the base plate 2, utilizes this rotating mechanism 15 that shank 8 and curved needle seat 11 are rotated around vertical axis on horizontal plane respectively integratedly.With reference to this rotating mechanism 15 of Fig. 3 simple declaration.
Affixed the upside belt pulley 17 in the upper end of the turning cylinder 16 of vertical configuration, affixed the downside belt pulley 18 in the bottom of turning cylinder 16.Upside belt pulley 17 and with the chimeric shank swinging mounting 80 of shank 8 on open and establish synchronous belt 20.Downside belt pulley 18, with the driven gear 23 of affixed drive pulley 22 of the driving shaft of θ direction drive motor 21 and curved needle seat 11 on open and establish synchronous belt 24.
Because the rotation of θ direction drive motor 21 can synchronously rotate shank 8 and curved needle seat 11 by turning cylinder 16 and synchronous belt 20,24 around vertical central.
Rotating mechanism 15 comprises shank rotating mechanism 15A and curved needle seat rotating mechanism 15B.Shank rotating mechanism 15A can make shank 8 rotate around its axle center by θ direction drive motor 21 by shank swinging mounting 80, synchronous belt 20, constitute with the affixed upside belt pulley 17 of turning cylinder 16, synchronous belt 24, θ direction drive motor 21 etc.
Curved needle seat rotating mechanism 15B is made of the driven gear 23 of curved needle seat 11, synchronous belt 24, θ direction drive motor 21 etc., makes the rotational synchronization of curved needle seat 11 and shank 8 by θ direction drive motor 21.
As shown in Figure 2, in base plate 2, cutting knife 25 releasably is installed on the erecting bed (not shown) of curved needle seat 11 rear sides by double-screw bolt.This cutting knife 25 is to form the member that round end hole portion uses.In casing portion 3, be provided with the hammer 26 that can swing up and down, cutting knife 25, separation close relatively from the top.
Leading section at this hammer 26 is installed with removably hammer body 27.This hammer 26 is driven by the hammer driving mechanism of being located in the base plate 2 (not shown) that is made of cylinder etc.Bore a hole on processing cloth by the hammer body 27 and the interaction of cutting knife 25, form the round end hole portion that the caudal knot portion by the round end portion of round shape roughly and the linearity continuous with it constitutes.
As shown in Figure 1 and Figure 2, face is provided with feeding table 28 on base plate 2.Carrying need be carried out the processing cloth of round end keyhole seam on this feeding table 28.These feeding table 28 integral body are slim rectangular box shapes, open wide towards the position of curved needle seat 11 and cutting knife 25.At this above feeding table 28, though the not shown pairing left and right presser foot that is made of metal that is provided with.
Be provided with in base plate 2: the driving by the directions X drive motors (not shown) that is made of stepper motor makes this feeding table 28 make this feeding table 28 along Y direction travel mechanism (not shown) that Y direction (fore-and-aft direction) feeding is moved along directions X travel mechanism (not shown) that directions X (left and right directions) feeding is moved and the driving by the Y direction drive motor (not shown) that is made of stepper motor.
As Fig. 4, shown in Figure 6, in casing portion 3, main shaft 30 sets along fore-and-aft direction, can be rotated to support on the machine frame F on a plurality of positions.Fore-and-aft direction substantial middle portion in casing portion 3, the positive downside of main shaft 30 is equipped with the countershaft 31 of left and right directions.Countershaft 31 form bow see with the shape of main shaft 30 quadratures, promptly with main shaft 30 clover leaf forms.The both ends of this countershaft 31 can be rotated to support on the machine frame F.
As Fig. 1, Fig. 2, shown in Figure 6, affixed the operating portion 12 of belt colyliform in the right part of this countershaft 31.This operating portion 12 is in operator's the easy position that arrives of hand, and more outstanding than the machine frame F on casing portion 3 right sides, being fixed into the operator can manually operated form.The rearward end of main shaft 30 affixed belt pulley 32.Go up to open at this belt pulley 32, with the affixed drive pulley (not shown) of the motor shaft of electrical motor of sewing machine and establish synchronous belt 33.Rotate by synchronous belt 33 driving main shaft 30 by electrical motor of sewing machine.
As shown in Figure 6, affixed hypoid (hypoid gear) 34 on the main shaft 30, the hypoid 35 of affixed and these hypoid 34 engagements on the countershaft 31.This occasion, the number of teeth of the hypoid 35 of countershaft 31 are 2 times of hypoid 34 numbers of teeth of main shaft 30.Therefore, the rotary speed of countershaft 31 is 1/2 of main shaft 30 rotary speeies.Constituted gear mechanism 95 by these two hypoids 34,35 as reduction gear.
Thread take-up mechanism 90 is made an explanation.As Fig. 4~shown in Figure 6, affixed the circular lobe plate 91 in the positive inboard of the operating portion 12 of countershaft 31 right parts.Be formed with grooved cam 91a in the left side of this lobe plate 91.Be equipped with the fulcrum 92 parallel with countershaft 31 in the front side of countershaft 31.Affixed thread take-up tension lever forms the bottom of member 93 in the right part of this fulcrum 92.
This thread take-up tension lever form an end of member 93 rotatably mounted roller 94.This roller 94 is embedded among the grooved cam 91a.The upper end that forms member 93 at thread take-up tension lever is formed with thread take-up tension lever 93a.When electrical motor of sewing machine makes main shaft 30 rotations, make the 1/2 rotary speed rotation of countershaft 31 by a pair of hypoid 34,35 with main shaft 30, under lobe plate 91 rotations, make thread take-up tension lever 93a swing by roller 94.
Be provided in the shank up-down mechanism 36 that main shafts 30 in the casing portion 3 drive shank 8 up and down along fore-and-aft direction and make an explanation utilizing below.
As Fig. 4~shown in Figure 6, the leading section of main shaft 30 affixed spindle crank 37.This spindle crank 37 is connected with the shank up-down mechanism 36 that shank 8 is moved up and down.This shank up-down mechanism 36 has the needle bar crank 38 and the transmission mechanism 40 that moves up and down.The upper end of needle bar crank 38 be can be rotated to support on the eccentric position of spindle crank 37, and the transmission mechanism 40 that will move up and down is connected with these needle bar crank 38 linkage types.
As Fig. 4~shown in Figure 6, needle bar crank 38 sees that by crank body 38a with from bowing of forwards extending integratedly of this crank body 38a the crank portion 38b that stretches out that is L word shape constitutes, with this stretch out crank portion 38b leading section, be that the 38c of Extension support portion is formed on the left and right directions to separate the parallel form of predetermined distance with crank body 38a.
Transmission mechanism 40 is made an explanation to moving up and down.As Fig. 4~shown in Figure 10, this transmission mechanism 40 that moves up and down has: yoke piece 41, annular component 43, guide pad 45,46, guiding mechanism 50, upside gasket member 51a and downside gasket member 51b, upside needle bar frame 52 and downside needle bar frame 53 etc.Needle bar crank 38 is by yoke piece 41 as rear side the 1st fulcrum 42a and front side the 1st fulcrum 42b rotatably support of the 1st fulcrum.This yoke piece 41 is supporting annular component 43 by left side the 2nd fulcrum 44a and right side the 2nd fulcrum 44b as the 2nd fulcrum.
Guiding mechanism 50 has back lateral mass guide plate 47 and preceding lateral mass guide plate 48 etc.
Between needle bar crank 38 and spindle crank 37, be equipped with the tabular back lateral mass guide plate 47 of left and right directions, be fixedly connected on the machine frame F.Lateral mass guide plate 48 before the positive front side of the 38c of Extension support portion of needle bar crank 38 is equipped with left and right directions tabular, affixed by a plurality of connecting axles 54,55 and back lateral mass guide plate 47.This back lateral mass guide plate 47 is relative in parallel to each other with preceding lateral mass guide plate 48.
Left and right sides width central portion in lateral mass guide plate 47 fronts, back is formed with the gathering sill 47a of the linearity of longitudinal extension, and the left and right sides width central portion in preceding lateral mass guide plate 48 back is formed with the gathering sill 48a of the linearity of longitudinal extension.Guide pad 45 can engage with the gathering sill 47a of back lateral mass guide plate 47 with moving up and down.Guide pad 46 can engage with the gathering sill 48a of preceding lateral mass guide plate 48 with moving up and down.Yoke piece 41 is arranged between back lateral mass guide plate 47 and the preceding lateral mass guide plate 48.
In the rear side support 41a of yoke piece 41, embedding has the roughly first half of rear side the 1st fulcrum 42a that passes crank body 38a, the rearward end of this rear side the 1st fulcrum 42a is rotated be bearing in freely on the guide pad 45.Rear side the 1st fulcrum 42a is fixed on the crank body 38a by steady pin 56.
In the support 41b of the front side of yoke piece 41, embed the roughly latter half that front side the 1st fulcrum 42b that passes the 38c of Extension support portion is arranged, the leading section of this front side the 1st fulcrum 42b is rotated be bearing in freely on the guide pad 46.Front side the 1st fulcrum 42b is fixed on the 38c of Extension support portion by steady pin 57.
Back lateral mass guide plate 47 and preceding lateral mass guide plate 48 move up and down with engaging of gathering sill 47a, 48a by a pair of guide pad 45,46 in these front and back and are supporting yoke piece 41 freely.Annular component 43 is bowed and is seen and be roughly ring-type, is provided in the inboard of yoke piece 41.
As shown in figure 10, this annular component 43 greatly, promptly is provided with the swing gap S of shank 8 than the diameter of shank 8.On this annular component 43, be formed with respectively towards its left and right directions outstanding left side support 43a and right side support 43b.On the support 43a of the left side of annular component 43, rotate the roughly right half part supporting left side the 2nd fulcrum 44a freely, on the left side support 41c with the left part embedding yoke piece 41 of this left side the 2nd fulcrum 44a.
On the support 43b of the right side of annular component 43, rotate the roughly left-half supporting right side the 2nd fulcrum 44b freely, the right part of this right side the 2nd fulcrum 44b is embedded on the right side support 41d of yoke piece 41.These rear sides the 1st fulcrum 42a and front side the 1st fulcrum 42b and left side the 2nd fulcrum 44a and right side the 2nd fulcrum 44b quadrature.
These rear sides the 1st fulcrum 42a and front side the 1st fulcrum 42b and left side the 2nd fulcrum 44a and right side the 2nd fulcrum 44b are bearing in the form of annular component 43 with universal joint on the needle bar crank 38.Annular component 43 can rotate around the axle center of rear side the 1st fulcrum 42a and front side the 1st fulcrum 42b, and can be around the left side axle center of the 2nd fulcrum 44a and right side the 2nd fulcrum 44b rotate.
As Fig. 4~Fig. 5, Fig. 8~Fig. 9, shown in Figure 12, the laminal circular supporting plate 9 that is made of elastomeric material is fixed on the machine frame F, and this supporting plate 9 is supporting near the portion in upper end that can move up and down and can swing the shank 8 of (oscillation center P as shown in figure 12).It is inner and extend downwards that this shank 8 passes annular component 43, via needle swinging mechanism 60 described later towards the downside of casing portion 3.
51a is rounded for the upside gasket member, and central portion is provided with the hole identical with the appearance and size of shank 8.This upside gasket member 51a is provided in the upside of annular component 43 sliding freely, and circular downside gasket member 51b is provided in sliding freely the downside of annular component 43.The stage casing part of shank 8 is inserted among these upside gasket member 51a and the downside gasket member 51b.
Upside needle bar frame 52 is affixed to be adapted to the form and the shank 8 of conflicting with the upper surface of upside gasket member 51a.Downside needle bar frame 53 is affixed to be adapted to the form and the shank 8 of conflicting with the lower surface of downside gasket member 51b.
In driving main shaft 30 rotations, when the crank body 38a of needle bar crank 38 and the 38c of Extension support portion being moved up and down, with engaging of gathering sill 47a, 48a yoke piece 41 is moved up and down by rear side the 1st fulcrum 42a and a pair of guide pad 45,46 of front side the 1st fulcrum 42b and front and back by spindle crank 37.Thus, annular component 43 is moved up and down, shank 8 is moved up and down by upside needle bar frame 52 and downside needle bar frame 53 by left side the 2nd fulcrum 44a and right side the 2nd fulcrum 44b.
At this moment, while move up and down when utilizing needle swinging mechanism 60 described later to swing all around when shank 8, because of upside gasket member 51a and downside gasket member 51b relatively annular component 43 slide, so shank 8 can all around be swung on no any obstacle ground.During these shank 8 swings, even the upside needle bar frame 52, downside needle bar frame 53, upside gasket member 51a and the downside gasket member 51b that are fixed on the shank 8 are varied to inclination attitude from flat-hand position, also owing to the form of annular component 43 with above-mentioned universal joint is bearing on the needle bar crank 38, therefore can absorb the inclination of upside gasket member 51a and downside gasket member 51b reliably, shank 8 can move up and down and swing.
Needle swinging mechanism 60 is made an explanation.As Fig. 4~shown in Figure 6, this needle swinging mechanism 60 is made of pin pendulum drive division 61 and pin pendulum body 62.Pin pendulum drive division 61 at first is described.
With the affixed eccentric cam plate (not shown) of countershaft 31 on engaging oscillating structural member 68 shape be two two forked fork 68a.The bottom of this oscillating structural member 68 is rotatably supported on the fulcrum 69 that is fixed in machine frame F.
The side of two fork 68a of oscillating structural member 68 is connected with the rearward end of connecting rod 70.The bolster 71 that is installed on the machine frame F along left and right directions is supporting oscillation adjustment plate 72 swingably.The leading section of connecting rod 70 is connected with the bending incision hole 72b of the 1st crank portion 72a of this oscillation adjustment plate 72 by double-screw bolt (not shown) and nut 73.The 2nd crank portion 72c of this oscillation adjustment plate 72 is connected with the base end part of pin pendulum yoke 74.
Unclamp nut 73, when the installation site of connecting rod 70 leading sections in incision hole 72b during near bolster 71 sides of oscillation adjustment plate 72, the swing quantitative change of the 2nd crank portion 72c is big, can increase the pin pendulum amount of shank 8.When the installation site of connecting rod 70 leading sections in incision hole 72b near oscillation adjustment plate 72 with the reverse side of bolster 71 time, the oscillating quantity of the 2nd crank portion 72c diminishes, and can reduce the pin pendulum amount of shank 8.
Pin pendulum body 62 is made an explanation.As shown in figure 11, bow and see that rounded shank swinging mounting 80 is embedded in the large diameter through hole (not shown) that the place ahead of casing portion 3 forms below, and can rotate but can not deviate from.Shank swinging mounting 80 is hollow cylindrical body basically, has integratedly: insert cylindrical portion 80a in the through hole, be arranged on the belt pulley 80b of this cylindrical portion 80a bottom and hang down and in opposite directions a pair of 80c of foot from this belt pulley 80b.
On a pair of 80c of foot, be formed with horizontal reception hole 80d respectively.On the cylindrical portion 80a of shank swinging mounting 80, can take in shank ways 81 cylindraceous with moving up and down.This shank ways 81 is made of with the rectangular-shaped block portion 83 that is fixed on cylindrical member 82 lower ends the cylindrical member 82 of length side.
Under the assembled state of shank swinging mounting 80 and shank ways 81, cylindrical member 82 is inserted in the cylindrical portion 80a of shank swinging mounting 80, and block portion 83 is between a pair of 80c of foot.
On two faces that are connected with the 80c of foot respectively of block portion 83 sides, be formed with two oblique shape groove 83a that extend respectively in the same direction.In the reception hole 80d of each 80c of foot, accommodating slidably guide finger 84.Be equipped with the pin pendulum teat 84a that engages with oblique shape groove 83a sliding freely at the leading section of this guide finger 84.Be formed with the axial 84b of bottom outlet portion that has in the other end of this guide finger 84 respectively, have at this and accommodating rubber-like compression spring 85 among 84b of bottom outlet portion.
Pressing plate 86 roughly is U word shape, and this pressing plate 86 is used for the 80c of clamping foot.Opposed tongue piece 86a on this pressing plate 86 is with reception hole 80d obturation.Thus, 85 pairs on spring of compression is housed in guide finger 84 inside side's application of forces among the reception hole 80d, makes this pin pendulum teat 84a slidably towards the oblique shape groove 83a of block portion 83.Guide finger 84 becomes by this pressing plate 86 and is fixed on relation in the casing portion 3.
Be inserted with shank ways 81 in the inside of connecting ring 87 described later.Utilization the flange parts 88 that upwards are provided with in cylindrical member 82 week and from above the rotating connecting ring 87 of retainer ring 89 clampings that inserts.This connecting ring 87 has the connecting pin 87a that horizontal direction is extended, and the two forked connecting portion 74a that these connecting pins 87a and pin are put yoke 74 are connected.
When utilizing aforesaid pin pendulum drive division 61 by pin pendulum yoke 74 and connecting ring 87 shank ways 81 to be moved up and down, block portion 83 also moves up and down integratedly.At this moment, become and utilize pressing plate 86 to be fixed on the guide finger 84 of the relation in the casing portion 3, put the oblique shape groove 83a of teat 84a because of making its pin, so block portion 83 (and shank ways 81) swings along its oblique shape groove 83a towards block portion 83.
Between the outer peripheral face of the inner peripheral surface of connecting ring 87 and shank ways 81, be formed with the annular gap of allowing that shank ways 81 moves slightly relative to connecting ring 87.That is, shank ways 81 moves because of the existence direction all around that energy carry out slightly relative to connecting ring 87 when pin is put of this annular gap.
The following describes the effect and the effect of button holing sewing machine 1.
When making, drive the electrical motor of sewing machine rotation,, make countershaft 31 rotations by hypoid 34,35 by synchronous belt 33 and belt pulley 32 driving main shaft 30.By the rotation of main shaft 30, as previously mentioned, shank 8 is moved up and down by shank up-down mechanism 36.
Countershaft 31 also rotates in main shaft 30 rotations, and the thread take-up tension lever 93a swing of the thread take-up mechanism 90 that is connected with these countershaft 31 right part linkage types utilizes the needle swinging mechanism 60 that is connected with countershaft 31 left part linkage types to make shank 8 swings simultaneously.When the processing cloth of operator after preparation maybe will be made for the processing cloth of making usefulness takes out, operating portion 12 is carried out manual operation.
Like this, in casing portion 3, be equipped with in the button holing sewing machine 1 of shank up-down mechanism 36, needle swinging mechanism 60 and thread take-up mechanism 90, be provided with in the casing portion 3 by electrical motor of sewing machine and drive the main shaft 30 of rotation and the countershaft 31 that sets with these main shaft 30 crossings on different level shapes, main shaft 30 is connected by gear mechanism 95 linkage types that are made of hypoid 34,35 with countershaft 31.Thus, in 30 rotations of electrical motor of sewing machine driving main shaft, main shaft 30 drives countershaft 31 rotations by gear mechanism 95.Can utilize this main shaft that rotates simultaneously 30 and countershaft 31 separately to drive shank up-down mechanism 36, needle swinging mechanism 60 and thread take-up mechanism 90, can realize the high speed motion of needle swinging mechanism 60 and shank up-down mechanism 36, can make the sewing speed high speed.
And, because of main shaft 30 is connected with shank up-down mechanism 36 linkage types, countershaft 31 is connected with needle swinging mechanism 60 and thread take-up mechanism 90 linkage types, so can realize the high speed of sewing speed by main shaft 30 high-speed driving shank up-down mechanism 36.Can distinguish driving needle swinging mechanism 60 and thread take-up mechanism 90 linkedly by countershaft 31 and shank up-down mechanism 36.
Because of needle swinging mechanism 60 separately is connected with the both ends linkage type of countershaft 31 separately with thread take-up mechanism 90, thus the configuration free degree of this needle swinging mechanism 60 and thread take-up mechanism 90 can be improved, and can improve the driving force transitivity and the balance of countershaft 31.
Because of be fixed with in the end of countershaft 31 can be from the outside manually operated operating portion 12, so the close operator in the installation site of operating portion 12 can improve the operability of operator to operating portion 12, and can improve operating efficiency.
Because of gear mechanism 95 has one group of hypoid 34,35, so can so that main shaft 30 and countershaft 31 respectively halfway the clover leaf form of part be rotated transmission, main shaft 30 and countershaft 31 both ends separately can be bearing on the machine frame F stability in the time of can improving main shaft 30 and countershaft 31 and rotate at a high speed respectively.Promptly, when using one group of bevel gear of diaxon quadrature on horizontal plane as gear mechanism, because front-end of spindle is installed with side's bevel gear, the countershaft front end is installed with the opposing party's bevel gear, though main shaft and countershaft all do not carry out two supports, in the present embodiment, because of having one group of hypoid 34,35, so can so that main shaft 30 and countershaft 31 respectively halfway the clover leaf form of part be rotated transmission, main shaft 30 and countershaft 31 both ends separately can be bearing in respectively on the machine frame F.
Because gear mechanism 95 is made of the reduction gear of the rotary speed of countershaft 31 being set for 1/2 rotary speed of main shaft 30, therefore, needle swinging mechanism 60 and thread take-up mechanism 90 and shank 82 times moved up and down synchronously move.
The following describes the change form of previous embodiment being carried out the locality change.
1) countershaft 31 also can form crossings on different level at the positive upside of main shaft 30 by a pair of hypoid 34,35.
2) also can be on main shaft 30 affixed worm gearing, affixed worm gear on countershaft 31, gear mechanism 95 constitutes by this worm gearing and with the worm gear of its engagement.
3) also needle swinging mechanism 60 can be connected with the right side linkage type of countershaft 31, thread take-up mechanism 90 is connected with the left side linkage type of countershaft 31.
4) above situation about the present invention being applied on the electronics round end button holing sewing machine 1 is described, but the present invention can be applicable to have shank up-down mechanism 36, on the various button holing sewing machines such as sewing machine for covering chain stitch of needle swinging mechanism 60 and thread take-up mechanism 90.

Claims (6)

1, a kind of button holing sewing machine is equipped with shank up-down mechanism, needle swinging mechanism and thread take-up mechanism in casing portion, it is characterized in that,
In described casing portion, be provided with: by the gear mechanism that electrical motor of sewing machine drives the main shaft of rotation, the countershaft that sets with this main shaft crossings on different level shape and linkage type are connected described main shaft and countershaft.
2, button holing sewing machine as claimed in claim 1 is characterized in that, described main shaft is connected with described shank up-down mechanism linkage type, and described countershaft is connected with described needle swinging mechanism and thread take-up mechanism linkage type.
3, button holing sewing machine as claimed in claim 2 is characterized in that, described needle swinging mechanism is connected with the both ends linkage type of described countershaft separately dividually with described thread take-up mechanism.
4, as each described button holing sewing machine in the claim 1~3, it is characterized in that, be fixed with in the end of described countershaft can be from the outside manually operated operating portion.
As each described button holing sewing machine in the claim 1~3, it is characterized in that 5, described gear mechanism has one group of hypoid.
6, button holing sewing machine as claimed in claim 1 is characterized in that, described gear mechanism is 1/2 the reduction gear that the rotary speed with described countershaft is set at described main axis rotation speed.
CN2006101057341A 2005-07-27 2006-07-19 Keyhole sartorius Active CN1904181B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005217151 2005-07-27
JP2005217151A JP4702608B2 (en) 2005-07-27 2005-07-27 Perforated sewing machine
JP2005-217151 2005-07-27

Publications (2)

Publication Number Publication Date
CN1904181A true CN1904181A (en) 2007-01-31
CN1904181B CN1904181B (en) 2011-07-06

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CN (1) CN1904181B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102002825A (en) * 2010-12-07 2011-04-06 中捷缝纫机股份有限公司 Main shaft transmission mechanism of sewing machine
CN101381930B (en) * 2007-09-05 2012-08-08 Juki株式会社 Buttonholing machine
CN101724983B (en) * 2008-10-16 2013-03-20 Juki株式会社 Serging machine
CN106948093A (en) * 2017-04-26 2017-07-14 上海鲍麦克斯电子科技有限公司 A kind of bead edging machine for stopping pin position more

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CN101381930B (en) * 2007-09-05 2012-08-08 Juki株式会社 Buttonholing machine
CN101724983B (en) * 2008-10-16 2013-03-20 Juki株式会社 Serging machine
CN102002825A (en) * 2010-12-07 2011-04-06 中捷缝纫机股份有限公司 Main shaft transmission mechanism of sewing machine
CN106948093A (en) * 2017-04-26 2017-07-14 上海鲍麦克斯电子科技有限公司 A kind of bead edging machine for stopping pin position more

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JP4702608B2 (en) 2011-06-15
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