CN1793472B - Feed regulation machine of sewing machine - Google Patents
Feed regulation machine of sewing machine Download PDFInfo
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- CN1793472B CN1793472B CN 200510137096 CN200510137096A CN1793472B CN 1793472 B CN1793472 B CN 1793472B CN 200510137096 CN200510137096 CN 200510137096 CN 200510137096 A CN200510137096 A CN 200510137096A CN 1793472 B CN1793472 B CN 1793472B
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Abstract
A feed regulating mechanism for a sewing machine has a feed regulating dial (60); a feed regulator (61) in which the turning angle thereof is regulated according to the regulating amount of the feed regulating dial (60); a feed changeover apparatus which generates the feed amount of cloth by a feed dog (121) corresponding to the turning angle of the feed regulator (61); and a regulating shaft (60a) driven back and forth by the turning operation of the regulating dial (60). The cam surface (61a) of the feed regulator (60a) is formed to come in point contact or line contact at a plurality of points with the output part (60c) at the tip of the regulating shaft (60a).
Description
(1) technical field
The present invention relates to a kind of feed regulation, especially relate to the structure that the cam surface that is formed on the feed regulator is improved with Sewing machines of feeding adjustment disk, feed regulator, feeding switch.
(2) background technology
The contrary feeding seam control device of the described Sewing machines of No. 2876884 communique of japanese (below be called patent documentation 1); With feeding amount setting element (feed regulator) can be that the center is provided with rotationally with the fulcrum, is formed with a pair of feeding amount adjusting range (cam surface) up and down in the y-bend portion of the leading section of feeding amount setting element.Rearward end formation at feeding adjusting knob (feeding adjustment disk) roughly is hemispheric snap-latch piece (efferent), and efferent is fastened on the feeding cam face.For the hemispherical snap-latch piece that makes the adjusting knob front end is conflicted at ordinary times on the feeding amount adjusting range of positive feeding side, and utilize extension spring to its application of force.
When efferent was fastened on the positive feeding cam face of downside, the feeding tooth carried out positive feeding running, when carrying out back stitching, drives the 1st solenoid battery coil, and efferent is fastened on the contrary feeding cam face of upside, and the feeding tooth carries out contrary feeding and turns round.Owing to efferent advances along with the rotating operation of feeding adjustment disk or retreats, so the angle of inclination of variable feed regulator is the cloth feed amount of feeding tooth.
In the time will using contrary feeding, through with the fulcrum being the rotation of the feeding amount setting element at center, the efferent of feeding adjustment disk is fastened on any in the cam surface up and down of feeding amount setting element with positive feeding change cloth feed amount., efferent can not be adjusted to different angles of inclination during with the cam surface that is fastened on downside when being fastened on the cam surface of upside.Therefore, existence can not change to the problem of different cloth feed amount with positive feeding and contrary feeding.
To this; Using a kind of Sewing machines with feed regulation; This feed regulation is with the feeding adjustment disk and feeding amount setting element is set at positive feeding usefulness respectively independently and contrary feeding is used; At the roughly vertical cam surface that is formed with feed regulator towards ground of the leading section of feeding amount setting element, this cam surface is conflicted with the hemispherical efferent of the regulating shaft front end that is arranged on the feeding adjustment disk, and available positive feeding changes to different cloth feed amount with contrary feeding.
The described cloth feeding direction inversion set of japanese kokai publication sho 58-192574 communique (below be called patent documentation 2) makes the angle change of the feed regulator of V-shape according to this amount of spin when rotating operation feeding adjustment disk.The conflict position of the positive feeding chain of command of the relative feed regulator of regulating shaft of feeding adjustment disk changes, and can change the cloth feed amount of suture needle and the cloth feed amount of feeding tooth simultaneously.
In patent documentation 2, when being used to tie a knot the back stitching of stitching, reverse switch through operation, reverse with the solenoid driving, the regulating shaft of adjustment disk just switches to the contrary feeding chain of command of conflict from positive feeding chain of command once, thus cloth feeding direction reverses.For the regulating shaft that makes adjustment disk is conflicted at ordinary times on positive feeding chain of command, and utilize extension spring to its application of force.
Use has the extension spring of bigger elastic force, moves with the positive feeding that in the process of making, can positively keep suture needle and feeding tooth, and can in making the way, the feeding action not switched to contrary feeding action.
In the contrary feeding seam control device of patent documentation 1 described Sewing machines; According to the back stitching after sewing finishing instruction with cloth feeding direction when positive feeding switches to contrary feeding; The 1st solenoid drives; The plunger of the 1st solenoid gets at a high speed, uses cam surface so the hemispherical snap-latch piece collides the contrary feeding of feeding amount setting element at high speed.At this moment, the hemispherical snap-latch piece is roughly colliding on the cam surface of vertical formation with it with converging, so when colliding, the suffered impulsive force of cam surface converges, the collision sound of this moment is very big, and the hemispherical snap-latch piece is easy to wear and tear with cam surface.
Even with feed direction when contrary feeding switches to positive feeding; Along with the driving of the 1st solenoid stops; Plunger is instantaneous returning owing to the elastic force of extension spring, and the hemispherical snap-latch piece also can collide on the cam surface of positive feeding with feeding amount setting element at high speed.Also can produce this moment and switch to problem identical when the feeding from positive feeding.
In patent documentation 2 described cloth feeding direction inversion sets, to force to make the elastic force of the extension spring on its positive feeding chain of command of conflicting, high more a lot of than the elastic force of patent documentation 1 described extension spring to the regulating shaft application of force of adjustment disk.When carrying out back stitching, feed regulator is to contrary feeding tilt, and the collision sound the when regulating shaft of feeding adjustment disk just collides on the contrary feeding chain of command once is bigger, and has the leading section of regulating shaft and the problem of accelerating against the wearing and tearing of feeding chain of command.
(3) summary of the invention
The object of the present invention is to provide the collision sound of the cam surface of a kind of efferent that makes the regulating shaft front end that is produced when switching cloth feeding direction and feed regulator to reduce as far as possible, the wearing and tearing of the efferent of inhibition regulating shaft front end and cam surface and can improve the feed regulation of the Sewing machines of durability.
The feed regulation of Sewing machines of the present invention comprises: be located at the feeding adjustment disk on the machine frame of Sewing machines; Regulate the feed regulator of rotational angle according to the regulating quantity of this feeding adjustment disk; Produce the feeding switch of the cloth feed amount of feeding member according to the rotational angle of this feed regulator; It is characterized in that; Have through the said feeding adjustment disk of rotating operation the regulating shaft that is driven by advance and retreat, the cam surface of said feed regulator forms with the efferent of said regulating shaft front end that multiple spot contacts or line contacts.
Adopt the words of above-mentioned formation; Then with the cloth feeding direction of feeding member from positive feeding to contrary feeding switch or from contrary feeding when positive feeding is switched; Multiple spot contacts or the line contact because the cam surface of feed regulator and the efferent of regulating shaft front end form; So when switching cloth feeding direction, disperse, can prevent the wearing and tearing of efferent and cam surface because of the efferent with the regulating shaft front end collides the suffered impulsive force of cam surface that causes.
(4) description of drawings
Fig. 1 is the front view of the Zigzag sewing machine with feed regulation of expression the present invention the 1st embodiment.
Fig. 2 is the stereogram of feeding tooth driving mechanism.
Fig. 3 is the face upwarding stereogram of feeding tooth driving mechanism.
Fig. 4 is the stereogram of contrary feeding adjustment disk and contrary feed regulator.
Fig. 5 is the vertical view of the major part of contrary feeding adjustment disk and contrary feed regulator.
Fig. 6 is the feeding adjustment disk of expression the present invention the 2nd embodiment and the stereogram of feed regulator.
Fig. 7 is the figure suitable with Fig. 4.
Fig. 8 is the figure suitable with Fig. 5.
Fig. 9 is the stereogram of looking sideways from the front of the sewing machine for covering chain stitch of expression the present invention the 3rd embodiment.
Figure 10 is the stereogram of looking sideways from the back side of sewing machine for covering chain stitch.
Figure 11 is the stereogram of feed regulator.
Figure 12 is the longitudinal sectional view of the major part of feed regulator.
Figure 13 is the figure suitable with Figure 12 of expression the present invention the 4th embodiment.
(5) specific embodiment
With reference to accompanying drawing, the present invention is done more detailed explanation.Fig. 1 to Fig. 5 representes the present invention is applicable to the 1st embodiment of Zigzag sewing machine.As shown in Figure 1, Zigzag sewing machine M1 comprises: support portion 1; The upright post portion 2 that is located at the right portions of support portion 1; With support portion 1 in opposite directions from the top of post portion 2 to the horn portion 3 that left extends; Be located at the chain-drive section 4 of the left part of horn portion 3.In support portion 1, be provided with thread cutting mechanism (not shown) and rotating shuttle (not shown) etc.Loading and unloading are equipped with the shuttle of coiling bottom line freely in this rotating shuttle.
Set inside in horn portion 3 has the not shown main shaft by the electrical motor of sewing machine driving.In chain-drive section 4, be provided with the needle bar drive device (not shown) that shank 5 is driven up and down through this main shaft and make these shank 5 swings carry needle bar swinging mechanism (not shown) of machining cloth etc.
In post portion 2, be provided with: the feeding adjustment disk 35 that the cloth feed amount of machining cloth forward or reverse work feed is regulated; And the back stitching handle 64 used of manual operation back stitching etc.
Describe down in the face of the feeding tooth driving mechanism 10 that drives 14 (being equivalent to the feeding member) of feeding tooth along fore-and-aft direction (cloth feeding direction), drives feeding tooth 14 simultaneously along the vertical direction.After the feed regulation 30 stated movably be connected with feeding tooth driving mechanism 10.
Like Fig. 2, shown in Figure 3, support portion 1 has the lower shaft 11 of the left and right directions that rotatably is supported in machine frame F.Through not shown synchronous belt, lower shaft 11 is driven to the regulation direction of rotation by electrical motor of sewing machine.Be connected with eccentric shaft 12 in the left part of this lower shaft 11, the left part of eccentric shaft 12 is connected with the feeding table 15 of feeding tooth 14 through the connecting rod 13 that moves up and down.
Have the swinging axle 16 parallel at the rear side of lower shaft 11 with the lower shaft that rotatably is supported in machine frame F 11.The rearward end of feeding table 15 is propped up in the upper end that is fixed in the feeding rod 17 on this swinging axle 16 by pivot.When utilizing electrical motor of sewing machine rotation to drive lower shaft 11, eccentric shaft 12 swing up and down and swing in, because of horizontal hunting receives the restriction of the connecting rod 13 that moves up and down, so feeding table 15 serves as that the swing fulcrum is by driving up and down with end thereafter.
Has the horizontal feeding switch 20 cylindraceous of formation in the front side of lower shaft 11.On this feeding switch 20, be formed with forniciform sliding tray 20a with axial quadrature ground, engaging has sliding shoe (square) 21 slidably on this sliding tray 20a.The rearward end of the connection connecting rod 22 of fore-and-aft direction is connected with the swing arm 23 of the right part that is fixed in swinging axle 16, and this leading section that connects connecting rod 22 is connected with sliding shoe 21.
Connect the after a while side of connecting rod 22, be connected with an end of eccentric wheel 25 at the roughly middle part of its fore-and-aft direction.Eccentric cam 24 is fixed in the left side of the eccentric shaft 12 of lower shaft 11.The eccentric wheel 25 of ring-type is entrenched in the periphery of eccentric cam 24.Feeding switch 20 around the amount of spin of trunnion axis by after the feed regulation 30 stated send adjusting to.
Thus, because of the rotation of eccentric wheel 25 along with lower shaft 11 moves up and down, serve as that to make leading section be that sliding shoe 21 carries out swing along sliding tray 20a to the swing fulcrum with end thereafter so connect connecting rod 22.At this moment; Corresponding with the rotational angle around trunnion axis of feeding switch 20; Connecting connecting rod 22 carries out swing, promptly carries out positive feeding swing or contrary feeding swing in the time at work feed through sliding shoe 21; Therefore, along with the rotation that is connected the swinging axle 16 that connecting rod 22 connects, feeding table 15 carries out swing.
Describe in the face of the feed regulation 30 that is used for the cloth feed amount of positive feeding or contrary feeding according to said regulating quantity, the generation that is just reaching contrary feeding adjustment disk 35,60 down.This feed regulation 30 has positive feed regulation 31 that produces the forward stitch amount and the contrary feed regulation 32 that produces contrary (bearing) cloth feed amount.
Contrary feed regulation 32 is described.Contrary feed regulation 32 comprises: contrary feeding adjustment disk 60; Regulate the contrary feed regulator 61 of rotational angle according to the regulating quantity of this contrary feeding adjustment disk 60; And the feeding switch 20 that produces the cloth feed amount of feeding tooth 14 according to rotational angle of this contrary feed regulator 61.
In the screw (not shown) of the fore-and-aft direction that on the machine frame F of post portion 2, forms, screw togather the regulating shaft 60a of contrary feeding adjustment disk 60 rotationally.Contrary feeding adjustment disk 60 is through the operation of operator's rotating operation 60b of portion, thereby advance and retreat drive (moving forward and backward) regulating shaft 60a.Setting against feed regulator 61 near rear side of regulating shaft 60a, this contrary feed regulator 61 is supported on the machine frame F through the contrary feed spool 62 of left and right directions rotationally.
On contrary feed spool 62, be connected with the base end part of connection handle 63 and back stitching handle 64.Connection handle 63 is connected connecting rod 39 with the 1st bottom connects, and is connecting the upper end of the 2nd connection connecting rod 40 simultaneously.Like Fig. 2～shown in Figure 4, be provided with hemispherical leading section 60c (efferent) at the front end of the regulating shaft 60a of contrary feeding adjustment disk 60, be formed with cam surface 61a at the leading section of contrary feed regulator 61, this cam surface 61a forms the V-arrangement face.As hereinafter described, when switching to cloth feeding direction against feeding through back stitching handle 64 or contrary feeding solenoid 72, cam surface 61a contacts (with reference to Fig. 5) with 2 with the hemispherical leading section 60c of regulating shaft 60a.
In the screw (not shown) of the fore-and-aft direction that on the machine frame F of post portion 2, forms, screw togather the regulating shaft 35a of positive feeding adjustment disk 35 rotationally.That is, positive feeding adjustment disk 35 drives (moving forward and backward) regulating shaft 35a through operator's rotating operation advance and retreat.Regulating shaft 35a set positive feed regulator 36 near rear side, this positive feed regulator 36 is supported on the machine frame through the bearing 37 of left and right directions rotationally.
In the rearward end of this positive feed regulator 36, the upper end that is connected connecting rod 39 through pin 38 with the 1st of above-below direction connects.The 1st connects the 2nd connection connecting rod 40 of connecting rod 39 through being connected with contrary feed regulation 32, is connected with the feeding adjusting rod 41 that is fixed in feeding regulating shaft 42 right parts.The actuating strut 43 that is fixed in feeding regulating shaft 42 left parts is connected with the rearward end that connecting rod 44 is regulated in feeding, and the leading section that connecting rod 44 is regulated in feeding is connected with the right part of feeding switch 20.
Owing to utilize positive feed regulation 31 or contrary feed regulation 32; Through the 1st, the 2nd connecting rod 39,40 and feeding adjusting rod 41 feeding regulating shaft 42 is rotated; Therefore; The swing of regulating connecting rod 44 through feeding changes the rotational angle around trunnion axis of feeding switch 20, thereby regulates cloth feed amount.
Like Fig. 2, shown in Figure 3, identical with contrary feed regulation 32, also be provided with hemispherical leading section 35c (efferent) at the front end of the regulating shaft 35a of positive feeding adjustment disk 35.The positive feeding cam face 36a of positive feed regulator 36 leading sections forms the V-arrangement face.As hereinafter described, when through back stitching handle 64 or contrary feeding solenoid 72 cloth feeding direction being switched to positive feeding, positive feeding cam face 36a contacts with the hemispherical leading section 35c of regulating shaft 35a with 2.
Like Fig. 2, shown in Figure 3, on the right side of feeding adjusting rod 41, will be installed on the machine frame F against feeding solenoid 72, will against the leading section of the plunger 73 of feeding solenoid 72 rotationally be fixed in axle 70 on linking arm 71 be connected.
When not driving against feeding solenoid 72, its plunger 73 is retracted in the solenoid 72, and the 1st connection connecting rod 39 is connected connecting rod 40 and is positioned at the below with the 2nd.The hemispherical leading section 35c of positive feeding adjustment disk 35 contacts with the positive feeding cam face 36a of positive feed regulator 36, and the hemispherical leading section 60c of contrary feeding adjustment disk 60 and the cam surface 61a of contrary feed regulator 61 are separated, so cloth feeding direction is positive feeding.At this moment, back stitching handle 64 keeps horizontal level.
When driving contrary feeding solenoid 72, its plunger 73 forwards stretches out, and linking arm 71 clockwise rotates, and the 1st connects connecting rod 39 is connected connecting rod 40 and moves to the top with the 2nd.The hemispherical leading section 35c of positive feeding adjustment disk 35 and the positive feeding cam face 36a of positive feed regulator 36 are separated, and contact with the cam surface 61a of contrary feed regulator 61 against the hemispherical leading section 60c of feeding adjustment disk 60, and cloth feeding direction switches to contrary feeding.At this moment, back stitching handle 64 switches to lower position.
Effect and effect to the feed regulation 30 of the Sewing machines of top explanation describe.
Be attended by the back stitching operation begin make or when finishing to make; If instruction drives contrary feeding solenoid 72 according to the back stitching in the stitch data; Then the plunger 73 of contrary feeding solenoid 72 forwards stretches out; Linking arm 71 clockwise rotates, and the 1st connects connecting rod 39 is connected connecting rod 40 and moves to the top with the 2nd.
The hemispherical leading section 35c of positive feeding adjustment disk 35 and the positive feeding cam face 36a of positive feed regulator 36 are separated, and contact with the cam surface 61a of contrary feed regulator 61 against the hemispherical leading section 60c of feeding adjustment disk 60, and cloth feeding direction switches to contrary feeding.Likewise, when back stitching handle 64 is manually switched to lower position, also can cloth feeding direction be switched to contrary feeding.
The cam surface 61a of contrary feed regulator 61 forms the V-arrangement face; 2 of hemispherical leading section 60c with contrary feeding adjustment disk 60 contact; So the driving that utilizes contrary feeding solenoid 72 with cloth feeding direction when positive feeding switches to contrary feeding, cam surface 61a disperses because of the hemispherical leading section 60c with contrary feeding adjustment disk 60 collides the impulsive force that receives.Consequently, can reduce the collision sound of this moment, can positively prevent the wearing and tearing of hemispherical leading section 60c and cam surface 61a, and can improve the durability of hemispherical leading section 60c and cam surface 61a.
Finish and when stopping the driving of contrary feeding solenoid 72, the plunger 73 of contrary feeding solenoid 72 is retracted in the contrary feeding solenoid 72 in back stitching, the 1st connects connecting rod 39 is connected with the 2nd below connecting rod 40 moves to.The hemispherical leading section 35c of positive feeding adjustment disk 35 contacts with the positive feeding cam face 36a of positive feed regulator 36, and is separated against the hemispherical leading section 60c of feeding adjustment disk 60 and the cam surface 61a of contrary feed regulator 61, and cloth feeding direction switches to positive feeding.When back stitching handle 64 is manually switched to horizontal level, also can cloth feeding direction be switched to positive feeding.
The positive feeding cam face 36a of positive feed regulator 36 also forms the V-arrangement face; To contact with 2 of the hemispherical leading section 35c of positive feeding adjustment disk 35; So stop cloth feeding direction when contrary feeding switches to positive feeding in the driving that utilizes contrary feeding solenoid 72, positive feeding cam face 36a disperses because of the hemispherical leading section 35c with positive feeding adjustment disk 35 collides the impulsive force that receives.
The collision sound of this moment can be reduced, and the wearing and tearing of hemispherical leading section 35c and positive feeding cam face 36a can be positively prevented.Because positive feeding cam face 36a, the 61a of positive feed regulator 36, contrary feed regulator 61 are formed the V-arrangement face, so the simplified processing of cam surface is favourable to reducing cost.
According to Fig. 6～Fig. 8 the 2nd embodiment of the present invention is described.The formation identical with said the 1st embodiment used identical symbol, and different formations is described.
In the 2nd embodiment of the present invention, the contrary feeding cam face 61d of the positive feeding cam face 36d of positive feed regulator 36A and contrary feed regulator 61A forms the part barrel surface.Positive feed regulator 36A and contrary feed regulator 61A are equivalent to feed regulator 66A respectively.Positive feed regulator 36A and contrary feed regulator 61A are roughly same formation, so only contrary feed regulator 61A is described.
Because at the leading section of contrary feed regulator 61A cam surface 61d is formed the part barrel surface with curvature with the hemispherical leading section 60c of regulating shaft 60a, so the hemispherical leading section 60c of regulating shaft 60a contacts with cam surface 61d line.Compare with the situation of V-arrangement face that cam surface 61a is formed among the 1st embodiment, can disperse cam surface 61d to collide the impulsive force that receives more effectively because of hemispherical leading section 60c with regulating shaft 60a.Other formation, effect, effect are identical with said the 1st embodiment.
The variation that above-mentioned each embodiment is carried out local deformation is described below.
1) the positive feeding cam face 36a of positive feed regulator 36,36A, 36d and contrary feed regulator 61, the contrary feeding cam face 61a of 61A, the shape of 61d can be distinguished different.For example can positive feeding cam face 36a, 36d be formed the V-arrangement face, will be against feeding cam face 61a, 61d forms and the part barrel surface of hemispherical leading section 60c with curvature.Also can be with positive feeding cam face 36a, 36d forms and the part barrel surface of hemispherical leading section 35c with curvature, will form the V-arrangement face against feeding cam face 61a, 61d.
The hemispherical leading section 35c that 2) also can form regulating shaft 35a contacts with the positive feeding cam face 36a of a plurality of points more than 3 with positive feed regulator 36.The hemispherical leading section 60c that likewise, also can form regulating shaft 60a contacts with the cam surface 61a of a plurality of points more than 3 with contrary feed regulator 61.
3) shape of efferent 35c, 60c there is no need to be defined as sphere, can get final product variable more different shape with positive feeding cam face 36a, 36d or contrary feeding cam face 61a, the 61d multiple spot contact or line contacts shape so long as form.
According to Fig. 9～Figure 13 the 3rd embodiment of the present invention is described below.In the feed regulation of the sewing machine for covering chain stitch that is suitable for the 3rd embodiment; Regulate the rotational angle of feed regulator according to the regulating quantity of feeding adjustment disk; Thereby according to the rotational angle of this feed regulator, the cloth feed amount of regulating the cloth feed amount of feeding tooth (being equivalent to the feeding member) and being installed in the suture needle (being equivalent to the feeding member) of shank lower end.
As shown in Figure 9, sewing machine for covering chain stitch M2 comprises: support portion 80; The upright post portion 81 that is located at the right portions of support portion 80; With support portion 80 in opposite directions from the top of post portion 81 to the horn portion 82 that left extends; Be located at the chain-drive section 83 of the left part of horn portion 82.
Be provided with the main shaft that drives by electrical motor of sewing machine (not shown) in horn portion 82.In chain-drive section 83, be provided with: the needle bar drive device (not shown) that shank 5 is driven up and down through main shaft; Make shank 5 swing the shank wobble drive mechanism 85 that carries out work feed at cloth feeding direction; An and part of regulating the pin side feed regulation 86 of cloth feed amount through this shank wobble drive mechanism 85.
In support portion 80, be provided with: utilize feeding tooth 121 to carry out the feeding tooth driving mechanism 87 of work feed; The part of the feeding tooth side feed regulation 88 of the cloth feed amount of adjusting feeding tooth 121; And thread cutting mechanism (not shown) and rotating shuttle (not shown) etc.
In post portion 81, be provided with: the feeding adjustment disk 89 that the cloth feed amount of machining cloth forward or reverse work feed is regulated; And the back stitching handle (not shown) used of manual operation back stitching etc.
Shank wobble drive mechanism 85 to being located in the horn portion 82 carries out simple declaration.
As shown in Figure 9, chain-drive section 83 is provided with the needle bar frame 91 that can support shank 90 with moving up and down.This needle bar frame 91 is supported by horizontal supporting axle 92 fore-and-aft directions of left and right directions in its bottom swingably.This needle bar frame 91 through shank connecting rod 113 be fixed in after the pin wobble crank 112 stated on the pin feeding driving shaft 102 that pin side feed regulation 86 had be connected.
Adopt in the time of to constitute; The state that thrusts to machining cloth with the suture needle 90A that is installed in shank 90 lower ends; Pin feeding driving shaft 102 relative axle center are rotated, and this moment, needle bar frame 91 was the oscillation center swing with its bottom through pin wobble crank 112 and shank connecting rod 113; So shank 90 (suture needle 90A) carries out the conveying of machining cloth in cloth feeding direction (fore-and-aft direction) swing.
According to Fig. 9, Figure 10 pin side feed regulation 86 is carried out simple declaration.This pin side feed regulation 86 comprises: feeding adjustment disk 89, pin feeding switch 105 and feed regulator 94 etc. with feeding adjustment screw 89a.
The downside of the main shaft 93 that in horn portion 82, is set is provided with feed regulator 94, this feed regulator 94 is inserted to lead on the fulcrum (not shown) parallel with main shaft 93 be supported rotationally.Be formed with the side at the fore-end of this feed regulator 94 and see slightly the y-bend portion that is " く " font, in this y-bend portion, be formed with a pair of feeding cam face 94a, 94b up and down.The upper end of the connecting rod 95 that the rearward end of feed regulator 94 and above-below direction extend is connected, and the bottom of this connecting rod 95 is connected with switching crank 97 on being fixed in switch axle 96.
On the machine frame F of horn portion 82, screw togather the feeding adjustment disk 89 that is useful on any adjusting feeding amount through feeding adjustment screw 89a.Be formed with in the rearward end of feeding adjustment screw 89a and slightly be hemispheric leading section 89b, this slightly is, and hemispheric leading section 89b can select the positive feeding cam face 94a of ground and feed regulator 94 downsides or the contrary feeding cam face 94b of upside conflicts.
On switch axle 96, open and be provided with extension spring 98 to direction of rotation.Feed regulator 94 elastic force-applyings of clockwise direction when this extension spring 98 is flat in Fig. 9 to being connected with switching crank 97 on being fixed in switch axle 96 through connecting rod 95.The leading section 89b of feeding adjustment disk 89 conflicts when flat on the positive feeding cam face 94a of downside, and leading section 89b advances along with the rotating operation of feeding adjustment disk 89 or retreats, and variable feed regulator 94 is towards the angle of inclination of positive feeding side.
Utilize the angle of inclination of feed regulator 94, can regulate the cloth feed amount of feeding tooth 121 and the cloth feed amount of shank 90 simultaneously.
The upper end of " く " font connection handle 99 on switching crank 97 and being rotatably supported in machine frame F is connected.The bottom of this connection handle 99 is connected with the plunger 100a of contrary feeding solenoid 100.
When contrary feeding solenoid 100 was failure to actuate, the leading section 89b of feeding adjustment disk 89 and positive feeding cam face 94a conflicted.When contrary feeding solenoid 100 actions, connection handle 99 sees to counterclockwise rotating from the side, and connecting rod 95 moves to the top, so the contrary feeding cam face 94b conflict of the leading section 89b of feeding adjustment disk 89 and upside, moment can carry out against feeding.
In horn portion 82,, this pin feeding driving shaft 102 is rotatably supported on the machine frame F pin feeding driving shaft 102 and main shaft 93 parallel setting.Be connected with pin feeding cam 103 in the right part of main shaft 93, pin feeding eccentric wheel 104 be set it is fitted on this pin feeding cam 103 from the outside.The right end portion near downside at main shaft 93 is provided with pin feeding switch 105 (being equivalent to the 2nd feeding switch).On this pin feeding switch 105, be connected with the pin feeding and switch crank 106, be supported with the 2nd connecting rod 107 simultaneously swingably.
The link rod part 104a of pin feeding eccentric wheel 104 is connected with the bottom of the 1st connecting rod 108, and these the 1st connecting rods 108 and the 2nd connecting rod 107 are movably linked.The right crank 109 of switch is fixed on the switch axle 96 set in the support portion 80, right crank 109 of this switch and said pin feeding switching crank 106 usefulness switching connecting rod 110 are connected.
When the rotation owing to main shaft 93 made the link rod part 104a swing of pin feeding eccentric wheel 104, the oscillating motion of link rod part 104a was delivered to the 2nd connecting rod 107 that is attached at rotationally on the link rod part 104a.The opposition side of the 2nd connecting rod 107 is connected with pin feeding switch 105 as swing fulcrum ground.
Link rod part 104a is that oscillation center is swung with this swing fulcrum.Feeding adjustment disk 89 is rotated, the angle of inclination of change feed regulator 94, with the inclined degree of change pin feeding switch 105, thereby the position of the swinging track of the relative link rod part 104a of the fulcrum of the 2nd connecting rod 107 changes.Thus, scalable passes to the oscillating quantity (cloth feed amount) and the swaying direction (cloth feeding direction) of the 1st connecting rod 108.And the swing of the 1st connecting rod 108 is delivered to the pin feeding crank 111 that is fixed on the pin feeding driving shaft 102.Consequently,, utilize the swing of shank 90, carry out the conveying of machining cloth by the suture needle 90A that is installed in shank 90 lower ends through said shank wobble drive mechanism 85.
Feeding tooth driving mechanism 87 is described.This feeding tooth driving mechanism 87 is because be and the roughly the same formation of above-mentioned the 1st embodiment, so carry out simple declaration.
Like Fig. 9, shown in Figure 10, eccentric wheel 116 about the left part of the lower shaft 115 that left and right directions sets is connected with sets up synchronous belt 117 on main shaft 93 and lower shaft 115.Be equipped with straight feeding axle 118 in the front side of lower shaft 115, the leading section of feeding table 119 is connected with the feeding table crank 133 that is fixed in straight feeding axle 118 left parts.Up and down be connected with feeding crank 120 up and down on the eccentric wheel 116, the rearward end of feeding table 119 is connected up and down on the feeding crank 120.
When lower shaft 115 through synchronous belt 117 during with main shaft 93 rotation synchronously, feeding crank 120 carries out oscillating motion through eccentric wheel 116 up and down up and down.At this moment because feeding crank 120 is connected with feeding table 119 up and down, so eccentric wheel 116 up and down swing up and down with swing in, utilizing up and down, feeding crank 120 suppresses horizontal huntings.Feeding table 119 serves as the swing fulcrum with its leading section, and rear side drives up and down.The feeding tooth 121 relative needle plates (not shown) that are formed on feeding table 119 upsides are come in and gone out.
Feeding table 119 is connected with feeding table crank 113 on being fixed in straight feeding axle 118 at its leading section, thus the feeding tooth side feed regulation of stating after utilizing 88,118 swings of straight feeding axle.Because the combination that moves up and down and move horizontally, thereby feeding tooth 121 substantially elliptical ground motion on one side are Yi Bian carry machining cloth.
According to Fig. 9, Figure 10 feeding tooth side feed regulation 88 is carried out simple declaration.This feeding tooth side feed regulation 88 comprises: have the feeding adjustment disk 89 of feeding adjustment screw 89a, following feeding switch 127 and feed regulator 94 etc.This feeding tooth side feed regulation 88 is essentially identical formations with pin side feed regulation 86.
Be connected with feeding cam 125 down in the right part of lower shaft 115, will descend feeding eccentric wheel 126 to be fitted on this time feeding cam 125 from the outside.The right end portion near downside at lower shaft 115 is provided with feeding switch 127 (being equivalent to the 1st feeding switch) down.On this time feeding switch 127, be supported with the 4th connecting rod 128 swingably.
The link rod part 126a of following feeding eccentric wheel 126 is connected with the bottom of the 3rd connecting rod 129, and these the 3rd connecting rods 129 and the 4th connecting rod 128 are movably linked.Change over adapter 130 is fixed on the switch axle 96 set in the support portion 80, this change over adapter 130 and following feeding switch 127 usefulness is switched connecting rod 131 be connected.
When the link rod part 126a of feeding eccentric wheel 126 swung under the rotation owing to lower shaft 115 makes, the oscillating motion of link rod part 126a was delivered to the 4th connecting rod 128 that is attached at rotationally on the link rod part 126a.The opposition side of the 4th connecting rod 128 is connected with following feeding switch 127 as swing fulcrum ground.
The swing of the 3rd connecting rod 129 is delivered to the feeding crank 132 that is fixed on the straight feeding axle 118.The swing of straight feeding axle 118 is delivered to affixed feeding table crank 133 above that, and the feeding table 119 that leading section is connected on this feeding table crank 133 moves horizontally, and moves horizontally the conveying machining cloth with the work feed of shank 90 synchronously utilizes feeding tooth 121.
Feeding tooth 121 is because moving up and down of causing of feeding tooth driving mechanism 87 moves horizontally with feeding tooth side feed regulation 88 causes, and substantially elliptical ground moves.Constitute cam changeover mechanism by connecting rod 95, connection handle 99 and contrary feeding solenoid 100 etc.
A pair of feeding cam face 94a, the formed V-shaped groove of 94b to feed regulator 94 describe.
Like Figure 11, shown in Figure 12, linearity ground is formed with V-shaped groove 94c on the positive feeding cam face 94a of feed regulator 94 and contrary feeding cam face 94b, and this V-shaped groove 94c contacts with the leading section of multiple spot with the feeding adjustment screw 89a of feeding adjustment disk 89.Form lubriation material maintaining part 94d in the inside of this V-shaped groove 94c, be used to keep lubriation materials such as lubricating grease.
Effect and effect to pin side feed regulation 86 and feeding tooth side feed regulation 88 describe.
Back stitching begin make or when finishing to make, if instruction drives contrary feeding solenoid 100 according to the back stitching in the stitch data, then the plunger 100a of contrary feeding solenoid 100 is retracted into, connection handle 99 rotates counterclockwise, connecting rod 95 moves to the top.
The positive feeding cam face 94a of the hemispherical leading section 89b of the feeding adjustment screw 89a that feeding adjustment disk 89 is had and feed regulator 94 is separated, and on the contrary feeding cam face 94b that at once conflicts, and cloth feeding direction moment switches to contrary feeding.When the back stitching handle is manually switched to lower position, also can cloth feeding direction be switched to contrary feeding.
Be formed with V-shaped groove 94c on the contrary feeding cam face 94b; To contact with 2 of the hemispherical leading section 89b of feeding adjustment disk 89; So the driving that utilizes contrary feeding solenoid 100 with cloth feeding direction moment when positive feeding switches to contrary feeding; Contrary feeding cam face 94b because of with 2 collisions of hemispherical leading section 89b of contrary feeding adjustment disk 89, so suffered impulsive force since multiple spot contact and disperseed really.
When stopping the driving of contrary feeding solenoid 100 in the back stitching end, the plunger 100a of contrary feeding solenoid 100 once just ejects because of the elastic force effect of extension spring 98, and connection handle 99 clockwise rotates, and connecting rod 95 is mobile downwards.Because on positive feeding cam face 94a, be formed with V-shaped groove 94c; To contact, so positive feeding cam face 94a is disperseed owing to multiple spot contacts really because of colliding the impulsive force that receives with the hemispherical leading section 89b of contrary feeding adjustment disk 89 with 2 of the hemispherical leading section 89b of feeding adjustment disk 89.
Because on positive feeding cam face 94a and contrary feeding cam face 94b, all be formed with the V-shaped groove 94c that contact with hemispherical leading section 89b multiple spot, reach collision sound with these positive feeding cam face 94a against feeding cam face 94b so can reduce hemispherical leading section 89b really.Can positively prevent the wearing and tearing of hemispherical leading section 89b and feeding cam face 94a, 94b.
Because be formed with the lubriation material maintaining part 94d that is used to keep lubricating grease in the inside of V-shaped groove 94c; So through the lubricating grease among the lubriation material maintaining part 94d; Hemispherical leading section 89b and positive feeding cam face 94a and contrary feeding cam face 94b wearing and tearing separately can be positively prevented, and durability can be improved.
The variation that above-mentioned the 3rd embodiment is carried out local deformation is described below.
4) shown in figure 13, the fluted 94e of linearity ground formation respectively on the positive feeding cam face 94a of feed regulator 94A and contrary feeding cam face 94b, this groove 94e contacts with the leading section line of a plurality of positions with the feeding adjustment screw 89a of feeding adjustment disk 89.Form lubriation material maintaining part 94f in the inside of this groove 94e, be used to keep lubriation materials such as lubricating grease.
Because on positive feeding cam face 94a and contrary feeding cam face 94b, be formed with groove 94e respectively; This groove 94e contacts with the hemispherical leading section 89b line of feeding adjustment disk 89 with a plurality of positions, so positive feeding cam face 94a and contrary feeding cam face 94b are disperseed owing to the line at a plurality of positions contacts really because of colliding the impulsive force that receives with the hemispherical leading section 89b of contrary feeding adjustment disk 89.
Can reduce the collision sound of feeding cam face 94a, 94b and hemispherical leading section 89b really.Can positively prevent the wearing and tearing of hemispherical leading section 89b and feeding cam face 94a, 94b.Because be formed with the lubriation material maintaining part 94f that is used to keep lubricating grease in the inside of groove 94e; So through the lubricating grease among the lubriation material maintaining part 94f; Hemispherical leading section 89b and positive feeding cam face 94a and contrary feeding cam face 94b wearing and tearing separately can be positively prevented, and durability can be improved.
5) in the 3rd embodiment; Being machining cloth that quality such as denim is thick carries out the structure of work feed with shank and feeding tooth, but only by the feed regulation of the Sewing machines of feeding tooth work feed or only by much less also applicable the present invention of feed regulation of the Sewing machines of shank work feed.
6) the present invention is not limited to above illustrated example, implements so long as the insider can add various distortion to previous embodiment in the scope that does not break away from aim of the present invention, and the present invention also comprises these variation.
Claims (17)
1. the feed regulation of a Sewing machines comprises: be located at the feeding adjustment disk on the machine frame of Sewing machines; Regulate the feed regulator of rotational angle according to the regulating quantity of this feeding adjustment disk; Produce the feeding switch of the cloth feed amount of feeding member according to the rotational angle of this feed regulator, it is characterized in that,
Have the regulating shaft that is driven by advance and retreat through the said feeding adjustment disk of rotating operation,
Cloth feeding direction is being switched to contrary feeding or when contrary feeding switches to positive feeding from positive feeding, and the cam surface of said feed regulator and the efferent of said regulating shaft front end form simultaneously that multiple spot contacts or line contacts.
2. the feed regulation of Sewing machines as claimed in claim 1 is characterized in that, said feeding adjustment disk is that the feeding adjustment disk is used in positive feeding, and said feed regulator is that feed regulator is used in positive feeding.
3. the feed regulation of Sewing machines as claimed in claim 1 is characterized in that, said feeding adjustment disk is that the feeding adjustment disk is used in contrary feeding, and said feed regulator is that feed regulator is used in contrary feeding.
4. the feed regulation of Sewing machines as claimed in claim 1 is characterized in that, the cam surface of said feed regulator forms the V-arrangement face.
5. the feed regulation of Sewing machines as claimed in claim 2 is characterized in that, the cam surface of said feed regulator forms the V-arrangement face.
6. the feed regulation of Sewing machines as claimed in claim 3 is characterized in that, the cam surface of said feed regulator forms the V-arrangement face.
7. the feed regulation of Sewing machines as claimed in claim 1 is characterized in that, the cam surface of said feed regulator forms the part barrel surface.
8. the feed regulation of Sewing machines as claimed in claim 2 is characterized in that, the cam surface of said feed regulator forms the part barrel surface.
9. the feed regulation of Sewing machines as claimed in claim 3 is characterized in that, the cam surface of said feed regulator forms the part barrel surface.
10. the feed regulation of Sewing machines as claimed in claim 1; It is characterized in that; Said feeding adjustment disk is the feeding adjustment disk that positive feeding of double as and contrary feeding both sides use; The cam surface of said feed regulator has the contrary feeding cam face that positive feeding cam face that positive feeding uses and contrary feeding are used, and has cam changeover mechanism, is used for optionally switching to the use location with the positive feeding cam face of said feed regulator with against the feeding cam face.
11. the feed regulation of Sewing machines as claimed in claim 10 is characterized in that, said positive feeding cam face has the V-shaped groove that contacts said regulating shaft leading section with multiple spot respectively with contrary feeding cam face.
12. the feed regulation of Sewing machines as claimed in claim 10 is characterized in that, said positive feeding cam face has the groove that contacts said regulating shaft leading section with a plurality of positions line respectively with contrary feeding cam face.
13. the feed regulation of Sewing machines as claimed in claim 11 is characterized in that, is formed with the lubriation material maintaining part that keeps lubriation material in the inside of said V-shaped groove.
14. the feed regulation of Sewing machines as claimed in claim 12 is characterized in that, is formed with the lubriation material maintaining part that keeps lubriation material in the inside of said groove.
15. feed regulation like each described Sewing machines in the claim 1 to 14; It is characterized in that; As said feeding switch, be set to and be that the feeding tooth carries out the feeding switch that the feeding tooth driving mechanism of work feed movably is connected through said feeding member.
16. feed regulation like each described Sewing machines in the claim 10 to 14; It is characterized in that; As said feeding switch, be set to and feeding switch that to make said feeding member be shank movably is connected to the needle bar swinging mechanism of cloth feeding direction swing carrying out work feed.
17. feed regulation like each described Sewing machines in the claim 10 to 14; It is characterized in that, be set to as said feeding switch: be that the feeding tooth carries out the 1st feeding switch that the feeding tooth driving mechanism of work feed movably is connected through said feeding member; And with the 2nd feeding switch that to make said feeding member be shank movably is connected to the needle bar swinging mechanism of cloth feeding direction swing carrying out work feed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004371192 | 2004-12-22 | ||
| JP2004-371192 | 2004-12-22 | ||
| JP2004371192 | 2004-12-22 |
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| Publication Number | Publication Date |
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| CN1793472A CN1793472A (en) | 2006-06-28 |
| CN1793472B true CN1793472B (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510137096 Expired - Fee Related CN1793472B (en) | 2004-12-22 | 2005-12-22 | Feed regulation machine of sewing machine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008194134A (en) * | 2007-02-09 | 2008-08-28 | Juki Corp | Sewing machine |
| KR101006540B1 (en) * | 2007-07-06 | 2011-01-07 | 주식회사 썬스타 | fixing apparatus of stitch dial position, stitch dial control apparatus fixed by the fixing apparatus, and sewing machine including the stitch dial control arrpratus |
| CN103741380B (en) * | 2013-12-20 | 2015-09-30 | 宁波三合鑫自动化有限公司 | The upper and lower synchronous feeding mechanism of thin material flat seam machine and feeding method thereof |
| JP7262323B2 (en) * | 2019-06-24 | 2023-04-21 | Juki株式会社 | Sewing machine and adjustment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876884B2 (en) * | 1992-03-14 | 1999-03-31 | ブラザー工業株式会社 | Sewing machine reverse feed stitching controller |
| CN1456727A (en) * | 2002-05-08 | 2003-11-19 | 三菱电机株式会社 | Sewing machine with needle feed |
-
2005
- 2005-12-22 CN CN 200510137096 patent/CN1793472B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876884B2 (en) * | 1992-03-14 | 1999-03-31 | ブラザー工業株式会社 | Sewing machine reverse feed stitching controller |
| CN1456727A (en) * | 2002-05-08 | 2003-11-19 | 三菱电机株式会社 | Sewing machine with needle feed |
Non-Patent Citations (3)
| Title |
|---|
| JP实开平5-48876U 1993.06.29 |
| JP特开2000-51557A 2000.02.22 |
| JP第2876884号B2 1999.01.22 |
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| CN1793472A (en) | 2006-06-28 |
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