CN1499003A

CN1499003A - Sewing machine

Info

Publication number: CN1499003A
Application number: CNA2003101014145A
Authority: CN
Inventors: 藤仓隆志; 志; 村谷弘志; 仁; 柳本孝仁
Original assignee: MICASATSU CO Ltd
Current assignee: MICASATSU CO Ltd
Priority date: 2002-10-29
Filing date: 2003-10-17
Publication date: 2004-05-26
Also published as: JP2004147713A; KR20040038716A; DE10348494B4; DE10348494A1; TW200420779A; TWI296294B

Abstract

A pair of horizontal rotary shuttles (15, 16) with the needles (20, 21), are arranged such that both shuttles are rotated in same direction. The lower and upper feeders (34, 42) at lower and upper sides of the cloth to be sewn, feeds the cloth by equal pitch. A presser foot (53) presses the cloth, during formation of seam.

Description

Sewing machines

Technical field

The present invention relates to Sewing machines, form when on unidirectional, supply with preparing the sewing material the independent closing line that constitutes by desirable suture and by on same line by connecting the another one independence closing line that suture constitutes.

Background technology

In athletic competition and in the employed ball that similarly moves, born top load on each closing line, it is loose that line is tending towards, and closing line might split.It is a kind of by forming the another one independence closing line that an independent closing line that is made of desirable suture (being common suture) and another one upward are made of connection suture (wherein needlework use suture at each kink knot) at same line (being overlapping two closing lines) that applicant of the present invention has built justice already.

Do not have to produce specially the Sewing machines of this strong cohesiveness zygonema now, such closing line can be by using or slightly improve existing Sewing machines and producing by the improvement bind.

For example, above-mentioned closing line can produce by the Sewing machines of the structure with shuttle-type hook and pin shown in Fig. 5.In this Sewing machines, the horizontal shuttle-type hook 101 in the left side, left pin 102, right pin 103 that rotates at counterclockwise or clockwise direction and the right horizontal shuttle-type hook 104 that rotates on shuttle-type hook 101 equidirectionals are aligned, left pin 102 and right pin 103 along direction A swing (perpendicular to the shuttle-type hook with at neat direction) to supply with the material that is sewed.

For the independent closing line that uses this Sewing machines to form to constitute by desirable suture and by on same line by connecting the another one independence closing line that suture constitutes, at first, the gadgetize device of Sewing machines is removed, to prevent the pin swing.Material is moved to implement sewing along direction B (towards a direction that arrow is indicated of right double-headed arrow) by manual then.As for this sewing, left horizontal shuttle-type hook 101 and right horizontal shuttle-type hook 104 rotate in the clockwise direction.When the material that will be sewed toward move right (being the right side among Fig. 5), desirable suture produces when suture produces by right pin 103 connecting by left pin 102.When material that will be sewed by when moving left, desirable suture produces when suture produces by left pin 102 connecting by right pin 103.On the other hand, when the horizontal shuttle-type hook 101 in a left side and right horizontal shuttle-type hook 104 rotates in the counterclockwise direction and with the material that is sewed by when moving right, desirable wiring is produced by right pin 103 when connecting wiring and produce by left pin 102.On the contrary, when the material that will be sewed when shuttle-

type hook

101 and 104 rotates in the counterclockwise direction by toward moving left, desirable wiring is produced by left pin 102 when connecting wiring and produce by right pin 103.

The method that forms such closing line also can realize that it utilizes horizontal shuttle-type hook 105 and vertical shuttle-type hook respectively by shown Sewing machines in the part (1) and (2) shown in use Fig. 6.Each Sewing machines has single shuttle-type hook 105 and single needle 106, and the material that is sewed is supplied with perpendicular to the direction that shuttle-type hook and pin are arranged at direction A-B (referring to the double-headed arrow between quotation mark A and the B).In order to form the independent closing line that the independent closing line that is made of desirable suture and another one use the above-mentioned identical connection suture of Sewing machines on the same line to constitute, after first closing line is sewed in vertical direction of the supply A, second closing line is sewed at reverse B from position X (i.e. the starting point of first closing line) or position Y (i.e. the last point of first closing line), and such first closing line and second closing line are formed on the same line.In the case, first closing line is made of desirable suture, and second closing line constitutes by connecting suture.

By the independent closing line that uses the Sewing machines shown in Fig. 5 to form to constitute with when connecting the independent closing line that suture constitutes, the material that is sewed is manually supplied with by desirable suture; Like this, the direction of pitch and sewing changes, and therefore the intensity of closing line change on whole sewing thread.Moreover, operating efficiency will reduce.

By the independent closing line that uses the Sewing machines shown in Fig. 6 to form to be made of desirable suture with when connecting the independent closing line that suture constitutes, sewing is in normal direction and be reversed; Like this, the sewing time is exactly the twice of unidirectional sewing time.Therefore, the method efficient is lower.Moreover, form first and second closing lines and make one to be positioned on the another one be very difficult that the closing line that promptly obtains uniform strength on whole sewing thread is very difficult.

Summary of the invention

Consider above-mentioned situation, a target of the present invention provides the high Sewing machines that forms independent closing line that is made of desirable suture and the another one independence closing line that is made of the connection suture on the same line of also stablizing of a kind of efficient, and wherein closing line has enough intensity.

The invention provides a kind of Sewing machines, wherein clockwise or the first horizontal shuttle-type hook that counterclockwise rotates, first pin, second pin and the second shuttle-type hook that rotates with the first horizontal shuttle-type hook equidirectional by successively according in one direction, described Sewing machines comprises:

Be used for the material that will be sewed and first, second pin between the feedway supplied with continuously of the identical pitch place of distance, wherein feedway has the top feedway that is arranged on the material (foot 42 is supplied with on the top of the embodiment that will illustrate promptly) and is arranged in underfeed device (being the bottom foot 34 of embodiment) under the material, and the material that remains between top feedway and the underfeed device is supplied with on the direction that the shuttle-type hook is placed;

Pressure apparatus (being the presser feet 53 among the embodiment) is used for depressing material when suture of every formation.

In a typical example, first closing line produces by the first horizontal shuttle-type hook and first pin, and second closing line produces by the second horizontal shuttle-type hook and second pin, and first and second closing lines of Chan Shenging are formed on the same line respectively.

Typically in the case, one of first and second closing lines are made of desirable suture, and another one constitutes by connecting suture.

Sewing machines in according to the present invention, the strong cohesiveness zygonema can by single towards single direction sewing operation and effectively produce easily, promptly similar with traditional operation, independent closing line that is made of desirable suture in the strong cohesiveness zygonema and the another one independence closing line that is made of the connection suture are formed on the same line.Moreover, the supply pitch of the independent closing line of one of them can with the supply pitch synchronised of another one independent structure zygonema; Like this, two independent closing lines can be evenly overlapping, produces the high and closing line attractive in appearance of intensity thus.Moreover, this just might obtain the intensity of sewing uniformly on whole sewing thread.In Sewing machines, the gadgetize device has top feedway that is positioned on the material that will be sewed and the underfeed device that is positioned under the material; Like this, very thick material can reliably be supplied with, and can obtain closing line attractive in appearance with reference to even supply pitch.Moreover, can use with tradition in the similar horizontal shuttle-type hook of double pin.

Description of drawings

Fig. 1 shows be according to the present invention in the general structure of Sewing machines of embodiment, wherein shown relation between Sewing machines major component or the parts in the mode of three-dimensional.

What Fig. 2 showed is the enlarged drawing of the supply of Fig. 1 middle and lower part and shuttle-type hook related elements or parts;

What Fig. 3 showed is to supply with the relevant element or the enlarged drawing of parts with top among Fig. 1;

Fig. 4 shows is the side view of the Sewing machines among the another one embodiment in according to the present invention;

Fig. 5 shows is to be used for the plane that concerns between the pin of the traditional double pin lockstitch machine that pin supplies with and the shuttle-type hook.

Fig. 6 shows is to be used for the plane that concerns between the pin of the traditional single pin lockstitch machine that pin supplies with and the shuttle-type hook, (1) part usage level shuttle-type hook wherein, and (2) part is used vertical shuttle-type hook.

The specific embodiment

Since then, with reference to the accompanying drawings embodiments of the invention are described.

First embodiment of the Sewing machines in according to the present invention illustrates with reference to Fig. 1 to Fig. 3.

What Fig. 1 showed is the overall construction drawing of Sewing machines, and wherein the major component of Sewing machines or the relation between parts show in the mode of three-dimensional.The space of using for the operator is arranged in the nearside (machine operation person side) of this figure near the observer.In following explanation, concern from the position of operator's side to make an explanation.Fig. 2 supplies with the element relevant with the shuttle-type hook or the enlarged drawing of parts with Fig. 1 middle and lower part.What Fig. 3 showed is to supply with the relevant element or the enlarged drawing of parts with Fig. 1 middle and upper part.

Sewing machines among Fig. 1 has along clockwise or anterior horizontal shuttle-type hook 15, anterior pin 20, rear portion pin 21 that counter clockwise direction is rotated and the rear portion shuttle-type hook 16 that rotates from the equidirectional of operator's side and 15 alignment of shuttle-type hook successively.The top supply foot 42 that is positioned at the underfeed 34 under the material that will be sewed and is positioned on the material is provided for material is supplied to rear side (promptly leaving operator's distally) from operator's side.Moreover, presser feet 53 is provided for pressing material when suture of every formation.

In the arm of Sewing machines, driving shaft 1 is rotated support, and under the base portion of Sewing machines, lower shaft 5 is rotated support.Drive pulley 2 is attached to the right part end of driving shaft 1, and merit is transferred to drive pulley 2 from drive motors (not showing) by band (not showing).Synchronous belt 4 is suspended between the synchronous pulley 3 of the synchronous pulley 3 of driving shaft 1 and lower shaft 5, and the rotation of driving shaft 1 is transferred to lower shaft 5 with transfer ratio at 1: 1 like this.

Below, the mechanical device that through-put power will be transferred to anterior horizontal shuttle-type hook 15 and rear horizontal shuttle-type hook 16 from lower shaft is described.

Under the bed portion of Sewing machines, hook drives transmission axle 8 and is rotated support and parallel with lower shaft 5, and hook driving shaft 10 is rotated support, and hook driving shaft 10 is vertical with hook driving transmission axle 8.Hook drives synchronously and to drive the hook that synchronous pulley 6 and hook drive transmission axle 8 with 7 hooks that are suspended from lower shaft 5 and drive between the synchronous pulley 5, and the rotation of lower shaft 5 is transferred to hook driving transmission axle 8 with transfer ratio at 1: 1 like this.Hook drives transmission helical gear 9 and is attached to each hook driving transmission axle 8 and hook driving shaft 10.Engagement between the helical gear more, the rotation that hook drives transmission axle 8 is transferred to hook driving shaft 10 with transfer ratio at 1: 1.

At the front and rear of hook driving shaft 10, depend on hook respectively and drive king bolt gear 11.Drive on the king bolt gear 11 at hook, anterior horizontal shuttle-type hook 15 and rear horizontal shuttle-type hook 16 are positioned at corresponding front and rear position, and each has and the similar structure of known level shuttle-type hook.Hook drives the lower end of small helical gear 12 attached to the hook axle 13 of each shuttle-type hook, each small helical gear 12 and corresponding hook drive king bolt gear 11 and are meshed, the rotation of hook driving shaft 10 is transferred to anterior horizontal shuttle-type hook 15 and rear horizontal shuttle-type hook 16 with double in raw velocity by each hook axle 13 like this, and rear axle is perpendicular to hook driving shaft 10.

The mechanical device that through-put power is transferred to underfeed 34 (carrying out the supply that will be sewed material with the downside from material) from lower shaft 5 will be described below.

The eccentric disc at the center of fixing close lower shaft 5 when supplying with cam 22 by the level shown in Fig. 1 center line.Be that the turning cylinder of cam 22 and lower shaft 5 overlap, the central axes of turning cylinder and cam also is separated with preset distance.The wheel component of supplying with bar 23 as level is pivotally mounted to the periphery that level is supplied with cam 22.The another one end 23 that level is supplied with bar 23 is coupled to the end of supplying with coupling link 25 rotationally.Under the bed portion of Sewing machines, horizontal supply shaft 27 is supported rotationally and is parallel with lower shaft 5.But being coupled to the level that is attached to horizontal supply shaft 27 supplies with actuating arm 26 with supplying with coupling link another end transmission of 25 ground.Supply with bar 23 and the coupling unit of supplying with coupling link 25 in level, have to supply with and control step 24, it is the element of (not the having to show) of quantity delivered control mechanical device.The angle of rotation of horizontal supply shaft 27 can change by changing the angle of supplying with control step 24, this effect is to be used for making the distance between pitch (being used to supply with the material with being sewed) and two

pins

20,21 to equate, make two closing lines be positioned at (that is overlapping two closing lines) on the same line like this.According to said structure, the rotation of lower shaft 5 is supplied with cam 22, level as a certain amount of rotational motion that moves in circles by level and is supplied with bar 23, supplies with control step 24, supplies with coupling link 25 and level and supply with actuating arm 26 and be transferred to horizontal supply shaft 27.Herein, the horizontal motion components of each underfeed 34 and top supply foot 42 provides by the rotational motion that moves in circles of horizontal supply shaft 27; But this will describe in detail below.

Horizontal supply arm 28 up is fixed on the left part end of horizontal supply shaft 27, and the end of supplying with step 30 is coupled to the upper end of horizontal supply arm 28 rotationally.At another end of supplying with step 30, form with forked part 30a.

In the left-hand extremity of lower shaft 5, adhere to vertical supply cam 29, it is simultaneously also indicated by a line among Fig. 1.But, in fact, supply with cam 29 and be eccentric cam attached to lower shaft 5, the mode that its cam is installed to the forked part 30a that supplies with step 30 makes cam to slide along the inside of forked part.

The tooth of underfeed 34 exposes (disappearing then) by the perforate on the needle plate 14, and is attached to the upper end of supplying with lever 31.The lower end of supplying with lever 31 is coupled to the forked part 30a (promptly being attached to the bossing that is presented at the forked part left side) that supplies with step 30 rotationally.Moreover, supply with support member 32 and be attached to supply lever 31 rotationally, the center of attachment position and supply lever 31 is close.Supply lever step 33 with vertical channel is attached near the frame of supplying with the lever 31.Supplying with support member 32 can slide along supplying with lever step 33.

Underfeed 34 is carried out elliptic motions, and this elliptic motion is the compound of the horizontal motion components that produced by horizontal supply arm 28 and the vertical vertical motion component of supplying with cam 29 generations.

Below, detailed description is used for through-put power is transferred to foot 42 (being used for supplying with from the top supply operation of the material that will be sewed) and presser feet 53 (pressing the material that is sewed) are supplied with in top when each suture forms mechanical device from horizontal supply shaft 27.

In the arm of Sewing machines, it is parallel with driving shaft 1 that swinging axle 38 is supplied with on the top that is provided.And the right end that actuating

arm

35,37 attaches to horizontal supply shaft 27 and top supply swinging axle 38 is respectively supplied with on top.The end that coupling bar 36 is supplied with on top is coupled to the free terminal that driving

shaft

35,37 is supplied with on top respectively rotationally.Therefore, the oscillating motion of horizontal supply shaft 27 is used as oscillating motion and is transferred to top supply swinging axle 38.

Supply with the left-hand extremity of swinging axle 38 on top, swing arm 39 is supplied with on the top of adhering to down.In the lower end of arm 39, the rotatable support towards parts of left side projection.The mode that this part is fixed on the recess 40a of top supply swing step 40 (will illustrate below) makes the upper end part of step to swing at fore-and-aft direction.On the right side of step 40, recess 40a is provided, in the left side of step 40, be provided for guiding top to supply with the ring or the upright opening of bar 41 (will illustrate below).Top is supplied with fixed form that bar 41 supplies with the ring of swing step 40 or upright opening by top and is made that bar can be by ring or upright opening and vertical the slip, and the lower end that foot 42 is attached to top supply bar 41 is supplied with on top, and pressure often is applied on the bar 41 by the upside of top supply bar compression spring 43.Structure according to the above description, the swinging operation that swing arm 39 is supplied with on top offers top supply foot 42 horizontal motion components, this swinging operation is supplied with the pendulum angle of swinging axle 38 based on top and is carried out, and it is to define according to the inclination of supplying with control step 24.

Top is supplied with cam 44 and is attached to driving shaft 1, and attachment position is near the central authorities of axle 1.Top is supplied with cam 44 and is shown by the line among Fig. 1 simultaneously; But in fact cam 44 is the eccentric discs that are fixed on the driving shaft 1.That is, driving shaft overlaps among the turning cylinder of cam 44 and Fig. 1, and turning cylinder is parallel with the cam center axle and be separated with preset distance.The wheel component of supplying with bar 45 as top is attached to the periphery that level is supplied with cam 44 rotationally.In the arm of Sewing machines, the top supply shaft 47 that is provided parallels with driving shaft 1 rotationally.At the right part end of axle 47, adhere to top supply arm 46 with curvilinear cut 46a, adhere to top supply arm 48 at the left part end of axle 47, the top supply arm all parallels with driving shaft 1.Another end that bar 45 is supplied with on top matches with the otch 46a of top supply arm 46 rotationally, and the strong point is adjustable, and the ascending amount of top supply foot 42 and presser feet 53 can be controlled like this.Structure according to the above description, the rotational motion of driving shaft 1 can be used as a certain amount of reciprocal rotational motion and are transferred to top supply shaft 47.

The end of top supply coupling link 49 is coupled to the free terminal of the top supply arm 48 that is fixed on top supply shaft 47 rotationally.The end of L link 50 is coupled to another end that coupling link 49 is supplied with on top rotationally.Turning (being sweep) in L link 50 forms annulus 50a, and it is rotatably fixed to the sweep of depression bar 52 (will illustrate below).Presser feet 52 makes bar 52 vertical direction slidably by the mode of the frame support of Sewing machines, and pressure is applied on the bar from upside by pressure control spring 54.In the lower end of press rods 52, adhere to presser feet 53, in the left side of bar 52, the recess with above-mentioned explanation is fixed to the annulus 50a (hole in) of L link 50.Top is supplied with and is swung another end that the L link is coupled in link 51 rotationally.Another end that swing link 51 is supplied with on top is coupled to top supply bar 41 rotationally, and coupling position is near the upper end of bar 41.According to said structure, the vertical motion that provides top to supply with foot 42 and presser feet 53, the direction of these vertical motions (being the direction that top supply foot 42 and presser feet 53 move) is toward each other.Therefore, top is supplied with foot 42 and is carried out elliptic motions, and this motion is horizontal motion components compound of this vertical motion component and above-mentioned explanation.

Sewing machines among first embodiment has above-mentioned structure.The sewing operation of this Sewing machines will be described below.

At first, for overlapping two closing lines that produce, the inclination of supplying with control step 24 is adjusted so that the horizontal motion components of foot 42 is supplied with on underfeed 34 and top, and the supply pitch and the distance between the pin that are about to be sewed material equate.Below sewing operation will be described.

According to the driving operation of drive motors (do not have show), driving shaft 1 rotates by drive pulley 2, and lower shaft 5 is also by synchronous pulley 3 be with 4 synchronously with transfer ratio (promptly rotate than) 1: 1 (between driving shaft 1 and lower shaft 5) rotation.The rotation of lower shaft 5 drives synchronous pulley 6 by hook and the hook driving is with 7 to be transferred to hook driving transmission axle 8 synchronously, and further is transferred to hook driving shaft 10 by hook driving transmission helical gear 9 at 1: 1 with transfer ratio.

The rotation of hook driving shaft 10 is transferred to front and rear hook axle 13 and anterior horizontal shuttle-type hook 15 and rear horizontal shuttle-type hook 16, it drives king bolt gear 11 by hook respectively and hook driving small helical gear 12 is attached to hook axle 13, rotates shuttle-

type hook

15 and 16 with double in raw velocity in clockwise or counter clockwise direction thus.In this process, according to the rotation of driving shaft 1, needle bar crank 18 is by link mechanism (not showing) vertical motion.Operation according to the above description, the first independent closing line forms by attaching to the cooperation of the anterior horizontal shuttle-type hook 15 of the anterior pin 20 of needle bar crank 18 and above-mentioned explanation, and cooperation on the same line that first closing line forms forms and second independence closing line is by rear portion pin 21 and rear horizontal shuttle-type hook 16.

When the horizontal shuttle-type hook 15 in front portion and rear horizontal shuttle-type hook 16 rotate from clockwise direction, first closing line is made of desirable suture, second closing line forms by connecting suture, and wherein needlework are owing to the rotation direction of hook with will be sewed the relation between the direction of the supply of material and tie knot at each.When the horizontal shuttle-type hook 15 in front portion and rear horizontal shuttle-type hook 16 when counterclockwise rotating, first closing line is formed by the chain jointing line, and second closing line is formed by desirable suture.The inevitable outcome that above-mentioned closing line forms is the material that is sewed to be supplied with foot 42 by underfeed 34 and top be supplied to.

The rotation of supplying with cam 22 according to the level of the rotation of lower shaft 5 by level supply with bar 23, supply with coupling link 25, level supplies with actuating arm 26 motion is transferred to horizontal supply shaft 27 as reciprocation cycle in predetermined rotational angular.When horizontal supply shaft 27 when predetermined angular is carried out the reciprocation cycle motion, horizontal supply arm 28 is swung at predetermined angular.Angle of oscillation is determined as the inclination of the supply control step 24 of the component of quantity delivered control mechanical device by adjustment.According to the swing of horizontal supply arm 28, supply with step 30 and move horizontally () herein at fore-and-aft direction, this motion also is transferred to the lower end of supplying with lever 31, like this by supply with that support member 32 produces oppositely on horizontal movement be transferred to underfeed 34.The horizontal movement of the underfeed 34 on oppositely is as supplying with the horizontal motion components that will be sewed material.

And, because that the forked part 30a of the supply step 30 of the rotation of the vertical supply cam 29 that produces according to the rotation of lower shaft 5 and cam 29 engagements moves and supplies with the underfeed 34 that step 30 moves together in vertical direction is also mobile in vertical direction.This vertical motion is used for supplying with the material that will be sewed by underfeed 34 as vertical motion component.Synthetic according to the horizontal motion components of this vertical motion component and above-mentioned explanation, underfeed 34 is carried out elliptic motion at fore-and-aft direction (direction that the shuttle-type hook is settled), and the tooth of underfeed 34 alternately occurs on needle plate like this, disappears under plate then.

The reciprocal rotational motion of horizontal supply shaft 27 supplies with coupling bar 36 by top supply actuating arm 35, top and top supply actuating arm 37 is transferred to top supply swinging axle 38 as reciprocal rotational motion.According to this reciprocal rotational motion, top is supplied with swing arm 39 and is carried out oscillating traverse motion, bar 41 is supplied with on top and foot 42 is supplied with by top supply swing step 40 flatly mobile (i.e. the fore-and-aft direction of settling at the shuttle-type hook) in top, and its upper end is in rotatable support on fore-and-aft direction on the fore-and-aft direction.

Because the rotation of cam 44 is supplied with on the top that produces according to the rotation of driving shaft 1, top supply shaft 47 supplies with bar 45 by top and top supply arm 46 is carried out reciprocal rotational motion, so the reciprocal oscillating motion of top supply arm 48 execution.This moves through top supply coupling link 49 and is transferred to L link 50.

Supply with coupling link 49 when top supply arm 48 and top and leaving operator's direction swing towards these parts, L link 50 is tending towards rotating in the counterclockwise direction around the strong point of the Coupling point of 52 of L link 50 and depression bars.In this operation, pressure is applied to depression bar 52 from pressure control spring 54, and the down motion of depression bar 52 will be sewed material in presser feet 53 contacts, and time limits.Therefore, the Coupling point (from L link 50) according to rotatory force on the counter clockwise direction of L link 50 and top supply bar 41 rotates in the counterclockwise direction.Correspondingly, bar 41 is supplied with on top because past the downforce that bar compression spring 43 applies is supplied with on top rises, and the top supply foot 42 that is fixed to top supply bar 41 like this leaves the material that will be sewed and rises.The vertical motion component of foot 42 is supplied with on the corresponding top of this ascending motion amount.Top is supplied with foot 42 and is carried out elliptic motion at fore-and-aft direction by the horizontal motion components of synthetic this vertical motion component and above-mentioned explanation.

The fact that is sewed material is supplied with foot 42 is supplied with in operation by underfeed 34 and top cooperation execution.That is, with synchronous when the elliptical orbit of operator's side rises at underfeed 34, top is supplied with foot 42 and is descended along the elliptical orbit of operator's side, keep thus underfeed 34 and top supply with between the foot 42 with the material that is sewed.Under this state (that is, material remains on underfeed 34 and top is supplied with between the foot 42), underfeed 34 and top are supplied with foot 42 and are moved away the operator.When two parts reached the rear end of elliptical orbit, underfeed 34 descended and 42 risings of top supply foot.Two parts and then shift to the operator.A series of like this motion constantly repeats, and continuously the material that is sewed is supplied with towards the direction of leaving the operator thus.

When top supply arm 48 and top supply with coupling link 49 at these parts when swinging on operator's the direction, L link 50 is tending towards rotating in the clockwise direction around the strong point, and this strong point is the Coupling point between L link 50 and the depression bar 52.In this operation, pressure is supplied with bar compression spring 43 and is applied to top supply bar 41 from top, and the down motion of top supply bar 41 is limited when 42 contacts of top supply foot will be sewed material.Therefore, rotate in the clockwise direction according to L link 50 rotatory force in the clockwise direction and the Coupling point of depression bar 52 (from L link 50).Correspondingly, past the downforce that depression bar 52 is applied by pressure control spring 54 relatively and rising is fixed to presser feet 53 risings of depression bar 52 like this and leaves the material that will be sewed.This motion of presser feet 53 is supplied with foot 42 and is moved away the operator to supply with the material that is sewed synchronously the time on underfeed 34 and top, underfeed 34 and top are supplied with between the foot 42 and kept the material that is sewed.On the other hand, supply with foot 42 risings and leave the material that will be sewed when top, presser feet 53 declines, help at

20,21 places formation rings (needlework) the material that is sewed thus with maintenance.

As above illustrated, according to (i) by first closing line that uses anterior horizontal shuttle-type hook 15 and anterior pin 20 and forms with (ii) pass through the combination of the formation of second closing line that use rear horizontal shuttle-type hook 16 and rear portion pin 31 form, and (iii) by underfeed 34 with killed the elliptic motion of not supplying with foot 42 and supplied with 42 and the vertical motion alternately carried out of presser feet 53 and transmit the material that to be sewed backward in the direction that the shuttle-type hook is settled by top, with the material that is sewed incessantly with pin 20, supply with in the same supply pitch of 21 distances, on the same line, form the independent closing line that constitutes by desirable suture like this and by connecting the independent closing line that suture constitutes.

Second embodiment of the Sewing machines among the present invention is described with reference to Fig. 4 below.

Identical among the basic structure of Sewing machines and first embodiment in the present embodiment.Therefore, element or parts with identical function are given identical reference numerals sign, only different features are described.

In this Sewing machines, be included in counterclockwise or direction that horizontal shuttle-type hook 15 that clockwise direction rotates, pin 20, pin 21 and the horizontal shuttle-type hook settled with order 15 are identical on the horizontal shuttle-type hook 16 that rotates.Be used for and

20,21 between the identical pitch of distance supply with the underfeed mechanical device (comprising underfeed 34 and similar) that will be sewed material and be positioned at and will be supplied under the material, and top gadgetize device (comprising that bar 41 is supplied with on top, foot 42 and similar is supplied with on top) is positioned at and will be sewed on the material.Also provide and in the closing line forming process, be used to suppress the cloth presser engagement positions (comprising depression bar 52, presser feet 53 and similar) that will be sewed material.

Features different in the present embodiment are, the direction of the supply that the hook of horizontal shuttle-type hook 15, pin 20, pin 21 and horizontal shuttle-type hook 16 is settled direction and will be sewed material is compared with first embodiment and changed 90 degree.That is, in the Sewing machines of first embodiment, the arrangement direction of shuttle-type hook and will be sewed the direction of the supply of material and the direction of arm 60 (being driving shaft 1) perpendicular.But, in the Sewing machines in a second embodiment, the arrangement direction of shuttle-type hook and will be sewed the direction of the supply of material and the direction of arm 60 (being driving shaft) parallels.Therefore, in a second embodiment, operator's position is in the free terminal side (being the left side of Fig. 4) of arm, be sewed material towards or supply with from the direction of the wall 61 (with reference to figure 4) of Sewing machines.In having the Sewing machines of said structure, with similar among first embodiment, the independent closing line that constitutes by desirable suture and on the same line, form by connecting the independent closing line that suture constitutes.

The invention is not restricted to the embodiment of above-mentioned explanation, can in scope and spirit of the present invention, make amendment and change.

Claims

1, a kind of Sewing machines, wherein along clockwise or the first horizontal shuttle-type hook that counterclockwise rotates, first pin, second pin and settled successively in one direction with the second horizontal shuttle-type hook that the first horizontal shuttle-type hook equidirectional rotates, wherein said Sewing machines comprises:

Feedway, described feedway be used for continuously and first and second pin between the corresponding to supply pitch of distance supply with the material that is sewed, wherein the gadgetize device has top feedway that is positioned on the material and the underfeed device that is positioned under the material, and the material that remains between top feedway and the underfeed device is supplied with in the direction that the shuttle-type hook is placed;

Pressure apparatus, described pressure apparatus are used for pressing material when forming each suture.

2, according to the Sewing machines in the claim 1, it is characterized in that first closing line produces by the first horizontal shuttle-type hook and first pin, second closing line produces by the second horizontal shuttle-type hook and second pin, and independent separately first and second closing lines that produce are formed on the same line.

3,, it is characterized in that one of first and second closing lines are made of desirable suture, and an other closing line constitutes by connecting suture according to the Sewing machines in the claim 2.