CN103031671B

CN103031671B - Sewing machine

Info

Publication number: CN103031671B
Application number: CN201210365288.3A
Authority: CN
Inventors: 加藤雅史
Original assignee: Brother Industries Ltd
Current assignee: Brother Industries Ltd
Priority date: 2011-09-29
Filing date: 2012-09-26
Publication date: 2014-09-03
Anticipated expiration: 2032-09-26
Also published as: JP2013070915A; CN103031671A

Abstract

The invention provides a sewing machine which can enable a motor capable of moving a cloth feeding mechanism to be used for other uses. The motor comprises a driving shaft which has a groove cam and a cam. A power transmission mechanism is respectively connected to the groove cam and a cloth feeding table. The sewing machine is rotated in a direction and an opposite direction in the range of a first angle through the driving shaft. The groove cam enables the power transmission mechanism to move. The power transmission mechanism enables the cloth feeding table to move in a horizontal direction. The moving mechanism is disposed at the rear side of the cam. A first connecting member is disposed at the left side of the moving mechanism and is provided with a rolling column for the cam, and the rolling column is connected to a moving cutter. The driving shaft is rotated to a second angle different from the first angle, and thereby the cam enables the moving mechanism to move. The moving mechanism enables to the rolling column to move at a position where the rolling column contacts with the cam.

Description

Sewing machines

Technical field

The present invention relates to Motor Drive main shaft separately of a kind of utilization and the Sewing machines of cloth feeding mechanism.

Background technology

There are Motor Drive main shaft separately of a kind of utilization and the Sewing machines of cloth feeding mechanism.Because this Sewing machines can freely be controlled cloth feed amount, therefore can easily make various patterns.For example, the work feed control device of the Japanese Unexamined Patent Publication No. 92444 disclosed Sewing machiness of communique in 1979 is delivered to the driving of work feed motor by means of linkage the cloth pushing table that disposes cloth conveying teeth.If the driving shaft of work feed motor comes and goes and rotates in the scope of predetermined angular, linkage makes cloth pushing table come and go mobile along the cloth feeding direction of Sewing machines.The public disclosed Sewing machines of above-mentioned communique, except having the motor for driving main shaft, also has the motor for driving cloth feeding mechanism in support portion.Sewing machines has the actuator for driving the mechanism beyond cloth feeding mechanism etc. in support portion.Because Sewing machines need to be used for the space in support portion by motor configurations, therefore the configuration of the mechanism in support portion becomes comparatively complicated.Sewing machines causes circuit board to maximize because adding motor.But the function of giving Sewing machines due to added motor is only for making cloth feeding mechanism motion, therefore having the poor such problem of efficiency.

Summary of the invention

The object of the present invention is to provide a kind of can also be by the motor for making cloth feeding mechanism motion the Sewing machines for other purposes.

The Sewing machines of technical scheme 1 has: motor, and it makes drive shaft turns; Cloth pushing table, its horizontal supporting cloth conveying teeth; The first actuating unit, its action that drives into by above-mentioned motor is done, and makes above-mentioned cloth pushing table along continuous straight runs motion; The second actuating unit, its action that drives into by above-mentioned motor is done, and makes other member motions different from above-mentioned cloth pushing table; And actuating member, it is arranged on above-mentioned driving shaft, make above-mentioned the first actuating unit and above-mentioned the second actuating unit motion by the driving of above-mentioned motor, above-mentioned actuating member makes above-mentioned first actuating unit motion to a direction and opposite direction rotation by above-mentioned driving shaft in the scope of the first angle, makes above-mentioned the second actuating unit motion by above-mentioned drive shaft turns to the second angle different from the first angle.

Rotate to a direction and opposite direction in the scope of the first angle by driving shaft, actuating member makes the first actuating unit motion.The first actuating unit makes the motion of cloth pushing table along continuous straight runs.Sewing machines can carry out work feed by drive motor.Actuating member makes the second actuating unit motion by drive shaft turns to the second angle.The second actuating unit makes other member motions different from cloth pushing table.Therefore, Sewing machines can also be by the motor for work feed for other purposes.

In the Sewing machines of technical scheme 2, above-mentioned actuating member has: the first cam, and it acts on above-mentioned the first actuating unit in the time that above-mentioned driving shaft rotates in the scope of above-mentioned the first angle; And second cam, it acts on above-mentioned the second actuating unit during to above-mentioned the second angle in above-mentioned drive shaft turns.The first cam makes the first actuating unit motion, thereby makes the motion of cloth pushing table along continuous straight runs.The second cam makes the second actuating unit motion, thereby makes other member motions different from cloth pushing table.Therefore, Sewing machines can also be by using the first cam and the second cam that the motor for work feed is used for to other purposes.

The Sewing machines of technical scheme 3,4 has: the 3rd cam, and it is arranged on the axial region that can rotate, cut off member, the moving cutting tool that it has fixed cutting tool and moves with respect to above-mentioned fixed cutting tool cuts off line between above-mentioned fixed cutting tool and above-mentioned moving cutting tool, the first coupling member, itself and above-mentioned moving cutting tool are connected, and have the portion that is applied as the position for above-mentioned the 3rd cam wheel, and travel mechanism, it is approached above-mentioned the 3rd cam from the separation point position separating with above-mentioned the 3rd cam and is made the above-mentioned portion of being applied move to the contact position that can be subject to above-mentioned the 3rd cam wheel by the above-mentioned portion that is applied that makes above-mentioned the first coupling member, above-mentioned other members comprise above-mentioned the first coupling member, above-mentioned the second actuating unit comprises above-mentioned travel mechanism, above-mentioned the first coupling member moves above-mentioned moving cutting tool by above-mentioned the 3rd cam wheel in the above-mentioned portion of being applied, above-mentioned actuating member (the second cam) makes the motion of above-mentioned travel mechanism by above-mentioned drive shaft turns to above-mentioned the second angle, thereby make the above-mentioned portion that is applied of above-mentioned the first coupling member move to above-mentioned contact position from above-mentioned separation point position.

Motor makes travel mechanism's motion, thereby makes the portion that is applied of the first coupling member move to contact position from separation point position.If when the portion of being applied moves to contact position, be accompanied by the rotation of the axial region that can rotate and the 3rd cam wheel that rotates in being applied portion.By the 3rd cam wheel, in being applied portion, the first coupling member moves moving cutting tool and line is cut off.Therefore, Sewing machines can be by the motor for work feed for generation of the power moving for the portion of being applied that makes the first coupling member.For Sewing machines, for example, during with solenoid that is provided in addition making the portion of being applied of the first coupling member to move etc. compared with, can reduce costs.

In technical scheme 5, in 6 Sewing machines, above-mentioned other members comprise cut-out member, the moving cutting tool that this cut-out member has fixed cutting tool and moves with respect to above-mentioned fixed cutting tool, between above-mentioned fixed cutting tool and above-mentioned moving cutting tool, line is cut off, above-mentioned the second actuating unit comprises the second coupling member, this second coupling member and above-mentioned moving cutting tool are connected, by the driving of above-mentioned motor, above-mentioned moving cutting tool is moved, above-mentioned actuating member (the second cam) makes above-mentioned the second coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned moving cutting tool is moved.Sewing machines can be by the motor for work feed for generation of the power that makes the second coupling member motion for line is cut off.

In the Sewing machines of technical scheme 7～12, above-mentioned other members comprise thread-loosening device, this thread-loosening device is for slowing down the tension force that puts on upper thread, above-mentioned the second actuating unit comprises the 3rd coupling member, the 3rd coupling member and above-mentioned thread-loosening device are connected, make above-mentioned thread-loosening device motion by the driving of above-mentioned motor, above-mentioned actuating member (the second cam) makes above-mentioned the 3rd coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes above-mentioned thread-loosening device motion.Sewing machines can be by the motor for work feed for generation of the power that makes the 3rd coupling member motion in order to make thread-loosening device motion.Therefore, for Sewing machines, for example be provided in addition making thread-loosening device motion solenoid etc. time compared with, can reduce costs.

In technical scheme 13, in 14 Sewing machines, above-mentioned other members comprise line stripper, this line stripper is for carrying out pipeline purging to the upper thread being between the sewing needle above above-mentioned cloth conveying teeth and above-mentioned cloth conveying teeth, above-mentioned the second actuating unit comprises the 4th coupling member, the 4th coupling member and above-mentioned line stripper are connected, make above-mentioned line stripper motion by the driving of above-mentioned motor, above-mentioned actuating member (the second cam) makes above-mentioned the 4th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby make above-mentioned line stripper motion.Sewing machines can be by the motor for work feed for generation of the power that makes the 4th coupling member motion in order to make line stripper motion.

In the Sewing machines of technical scheme 15～17, above-mentioned other members comprise presser feet, this presser feet and above-mentioned cloth conveying teeth relatively arrange, can and above-mentioned cloth conveying teeth between clamp between the pressing position of cloth and the off-position away from above-mentioned cloth conveying teeth and move, above-mentioned the second actuating unit comprises the 5th coupling member, the 5th coupling member and above-mentioned presser feet are connected, by the driving of above-mentioned motor, above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position, above-mentioned actuating member (the second cam) makes above-mentioned the 5th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position.Sewing machines can be by the motor for work feed for generation of the power that makes the 5th coupling member motion for presser feet is moved.

Brief description of the drawings

Fig. 1 is the stereogram of Sewing machines 1.

Fig. 2 is the stereogram of the first state of cloth feeding mechanism 70.

Fig. 3 is the stereogram of the second state of cloth feeding mechanism 70.

Fig. 4 is the stereogram of the third state of cloth feeding mechanism 70.

Fig. 5 is the stereogram of observing cloth feeding mechanism 70 in the scope of driving shaft 36 in the first angle and when roller 955 is positioned at separation point position and line cut-off machine structure 90 from bottom surface side.

Fig. 6 is cloth feeding mechanism in the scope of driving shaft 36 in the first angle and when roller 955 is positioned at separation point position 70 and the upward view of line cut-off machine structure 90.

Fig. 7 is the stereogram of observing cloth feeding mechanism 70 in the scope of driving shaft 36 in the first angle and when roller 955 is positioned at separation point position and line cut-off machine structure 90 from bottom surface side.

Fig. 8 observes the cloth feeding mechanism 70 of driving shaft 36 in the time that the second angle and roller 955 are positioned at contact position and the stereogram of line cut-off machine structure 90 from bottom surface side.

The cloth feeding mechanism 70 that Fig. 9 is driving shaft 36 in the time that the second angle and roller 955 are positioned at contact position and the upward view of line cut-off machine structure 90.

Figure 10 observes the cloth feeding mechanism 70 of driving shaft 36 in the time that the roller 955 of the second angle and the first coupling member 93 is positioned at contact position and the stereogram of line cut-off machine structure 90 from bottom surface side.

Figure 11 is the figure that represents the relation between the anglec of rotation and cam 968 and the position relationship of travel mechanism 91 of relation between the anglec of rotation of driving shaft 36 and the position of contact site 56, driving shaft 36.

Figure 12 is the front view of thread clamping mechanism 63 and presser feet reciprocating mechanism 64.

Figure 13 is another front view of thread clamping mechanism 63 and presser feet reciprocating mechanism 64.

Figure 14 is the rearview of the line stripper 76 of pipeline purging bar 78 while being positioned at position of readiness.

Figure 15 is the rearview that the top of pipeline purging bar 78 moves to the line stripper 76 in when below.

Figure 16 is the stereogram that the driving shaft 36 of the Sewing machines 1 of the second embodiment is positioned at the state of the scope of the first angle.

Figure 17 is the stereogram that the driving shaft 36 of the Sewing machines 1 of the second embodiment is positioned at the state of the second angle.

Detailed description of the invention

With reference to the accompanying drawings of the Sewing machines 1 of the first embodiment of the present invention.The upside of Fig. 1, downside, right side, left side, face side, rear side are respectively upside, downside, right side, left side, front side, the rear sides of Sewing machines 1.

As shown in Figure 1, Sewing machines 1 has support portion 2, column sections 3 and horn portion 4.Support portion 2 is installed on the recess (omitting diagram) of the upper surface of workbench 20 from top.Column sections 3 is extended upward from the right-hand member of support portion 2.Horn portion 4 extends to left from the upper end of column sections 3.Horn portion 4 is relative with the upper surface of support portion 2.Horn portion 4 has depression bar 44(with reference to Figure 12 below left part).Depression bar 44 is provided with presser feet 17 in lower end.Presser feet 17 with cloth conveying teeth 34(with reference to Fig. 2) relative.Horn portion 4 maintains shank 7 in inside.Shank 7 is provided with sewing needle 8 in lower end.Shank 7 is accompanied by the driving of main motor 13 and moves up and down with sewing needle 8.Horn portion 4 has thread take-up tension lever 9 in front, left part.Thread take-up tension lever 9 moves up and down linkedly with shank 7.Horn portion 4 has operating portion 10 on top.Operating portion 10 has liquid crystal panel 11 at front surface.Operator is seeing liquid crystal panel 11 while operating operation portion 10, by various instruction input Sewing machiness 1.Sewing machines 1 has control device 25 at the lower surface of workbench 20.Control device 25 is connected with the pedal 22 of override type by means of bar 21.Operator is to rear side or front side operating pedal 22.Control device 25 is according to the action of the direction of operating of pedal 22 and operational ton control Sewing machines 1.Sewing machines 1 has knee action bars (omitting diagram) below workbench 20.Operator moves up and down presser feet 17 by operating above-mentioned knee action bars.Column sections 3 has main motor 13 on right flank top.Horn portion 4 has main shaft 14 in inside.State in the horn portion 4 inside to the left and right direction extension of main shaft 14 rotating.The right-hand member of main shaft 14 is connected with main motor 13.The left end of main shaft 14 is connected with shank up-down mechanism (omitting diagram).Main motor 13 moves up and down shank 7 and thread take-up tension lever 9 by driving main shaft 14.Support portion 2 has needle plate 15 at upper surface left end, and needle plate 15 has pin hole 18(with reference to Fig. 2 in substantial middle portion).Pin hole 18 is passed in the lower end of sewing needle 8 in the time declining.Needle plate 15 respectively at the left of pin hole 18, front, rear, right-handly there is work feed perforation 19(with reference to Fig. 2).Work feed perforation 19 is rectangular shape longer on fore-and-aft direction.Support portion 2 has rotary shuttle mechanism (omit diagram), cloth feeding mechanism 70(with reference to Fig. 2～Fig. 4 below needle plate 15) and line cut-off machine structure 90(with reference to Fig. 5～Figure 10).Cloth feeding mechanism 70 is the mechanisms for delivery of object to be sewn (cloth etc.).Line cut-off machine structure 90 for cutting off the mechanism of upper thread and bottom line below pin hole 18.

The structure of cloth feeding mechanism 70 is described with reference to Fig. 2.The upside of Fig. 2, downside, right side, left side, upper left side, lower right side are respectively upside, downside, front side, rear side, right side, the left sides of Sewing machines 1.In Fig. 2, omit line cut-off machine structure 90(with reference to Fig. 5) diagram.Cloth feeding mechanism 70 has cloth pushing table 33, cloth conveying teeth 34, motor 35, grooved cam 65, Poewr transmission mechanism 60 and upper and lower actuating unit 47 etc.Cloth pushing table 33 be positioned at the below of needle plate 15 and with needle plate 15 almost parallels.Cloth pushing table 33 supports to approximate horizontal cloth conveying teeth 34 near upper surface center.Cloth conveying teeth 34 is corresponding with the position of work feed perforation 19.Cloth conveying teeth 34 is longer on fore-and-aft direction, and the length of the Length Ratio work feed perforation 19 of its fore-and-aft direction is short.Cloth conveying teeth 34 has for clamp the concavo-convex of cloth between cloth conveying teeth 34 and presser feet 17 on top.Motor 35 is stepping motors, and it is configured in the right-hand of cloth pushing table 33.Motor 35 makes cloth pushing table 33 move along fore-and-aft direction.Motor 35 rotates the driving shaft 36 extending to left.Grooved cam 65 is fixed on the top of driving shaft 36.Driving shaft 36 by cam 68(described later with reference to Fig. 6) be fixed on the right side of grooved cam 65.Grooved cam 65 has lobe plate 61, base plate 66 and side plate 67.It is roughly discoid that lobe plate 61 is, and have the curved surface corresponding with the anglec of rotation of driving shaft 36.Lobe plate 61 has the protuberance 62 outstanding to the radial outside of driving shaft 36 on curved surface.The contact site 56(aftermentioned of protuberance 62 and Poewr transmission mechanism 60) contact.The base plate 66 being fixed on the right flank of lobe plate 61 is formed as the shape identical with the right flank of lobe plate 61 and larger than the right flank of lobe plate 61, and side plate 67 is arranged on all ends of base plate 66.Lobe plate 61, base plate 66 and side plate 67 form the slot part 69 of groove shape.Slot part 69 has groove protuberance 691.Groove protuberance 691 is outstanding to the radial outside of driving shaft 36 in the mode corresponding with the shape of protuberance 62.Poewr transmission mechanism 60 is arranged between cloth pushing table 33 and grooved cam 65.Poewr transmission mechanism 60 is done by the action that drives into of motor 35, makes cloth pushing table 33 along continuous straight runs motions.Poewr transmission mechanism 60 has contact site 56, middle actuation arm 55, horizontal feed axle 28 and link component 50.Contact site 56 is inserted in slot part 69.The rearward end of actuation arm 55 in the middle of contact site 56 is arranged on.Contact site 56 is orthogonal and to right-hand outstanding with middle actuation arm 55.Middle actuation arm 55 is extended along fore-and-aft direction.The leading section of middle actuation arm 55 and horizontal feed axle 28 axially orthogonal, is connected with the right-hand member of horizontal feed axle 28.Horizontal feed axle 28 extends along left and right directions, is supported on support portion 2 in the mode that can rotate.Link component 50 is connected with the left end of horizontal feed axle 28, extends upward.The upper end of link component 50 is connected with the mode that can rotate and the leading section of cloth pushing table 33.The first angle is the angle that protuberance 62 acts on contact site 56 in the anglec of rotation of driving shaft 36, and the scope of the first angle is the scope of the θ 1～θ 3 shown in Figure 11.Rotate to a direction and opposite direction in the scope of the first angle by driving shaft 36, grooved cam 65 comes and goes and rotates.Contact site 56 is accompanied by the round rotation of grooved cam 65 and moves up and down along protuberance 62.In the middle of contact site 56 makes, actuation arm 55 is rotated centered by horizontal feed axle 28.Horizontal feed axle 28 rotates linkedly with the rotation of middle actuation arm 55.Cloth pushing table 33 moves along fore-and-aft direction by the rotation of horizontal feed axle 28.Upper and lower actuating unit 47 is arranged on the rear end of cloth pushing table 33.Upper and lower actuating unit 47 has upper and lower conveying axis 27, belt wheel 24, eccentric part 39 and link component 51.Upper and lower conveying axis 27 is supported on support portion 2 in the mode that can rotate, extends abreast with horizontal feed axle 28 along left and right directions.Belt wheel 24 is fixed on the right-hand member of upper and lower conveying axis 27, is connected with main shaft 14 by means of Timing Belt (omitting diagram).Upper and lower conveying axis 27 rotates with the state of synchronizeing with main shaft 14 by the driving of main motor 13.Eccentric part 39 is arranged on the left end of upper and lower conveying axis 27, with respect to the axle center bias of upper and lower conveying axis 27.Link component 51 is arranged on the rear end of cloth pushing table 33 in the mode that can rotate, keep eccentric part 39 in the mode that can make eccentric part 39 rotate.Eccentric part 39 is accompanied by the rotation of upper and lower conveying axis 27 and by means of link component 51, cloth pushing table 33 is moved up and down.

Illustrate with reference to Fig. 2～Fig. 4 how cloth feeding mechanism 70 makes cloth pushing table 33 carry out fore-and-aft direction action.Rotate to a direction and opposite direction in the scope of the first angle by driving shaft 36, cloth feeding mechanism 70 repeats following the first state～third state, thereby cloth pushing table 33 is moved along fore-and-aft direction.The top ends of the protuberance 62 of lobe plate 61 contacts with contact site 56 when the first state (with reference to Fig. 2).Under the first state, driving shaft 36 is positioned at angle θ 2(with reference to Figure 11) position.Therefore, contact site 56 is positioned at topmost, and cloth pushing table 33 is positioned at forefront.In the following description, the position of protuberance 62 in the time that the top ends of protuberance 62 of lobe plate 61 and the contact site 56 of middle actuation arm 55 contact is made as to centre position.

If motor 35 drives from the first state, driving shaft 36 around left side depending on clockwise rotating under state.Protuberance 62 is accompanied by the rotation of driving shaft 36 and around clockwise rotating, from centre position, forwards move position.Because contact site 56 moves downwards along the curved surface of lobe plate 61, therefore in the middle of effect arm 55 centered by horizontal feed axle 28 around left side depending on rotating counterclockwise under state.The rotation of horizontal feed axle 28 and middle actuation arm 55 is linkedly around rotating counterclockwise.Link component 50 with horizontal feed axle 28 linkedly around left side depending on rotating counterclockwise under state, cloth pushing table 33 rearward moves.As shown in Figure 3, if driving shaft 36 turns to an end of the scope of the first angle, turns to angle θ 3(with reference to Figure 11), cloth feeding mechanism 70 is in the second state.Contact site 56 is positioned at foot, and cloth pushing table 33 is positioned at rear.Afterwards, motor 35 makes the rotation direction reversion of driving shaft 36.Driving shaft 36 around left side depending on rotating counterclockwise under state.Lobe plate 61 be accompanied by driving shaft 36 rotation and around left side depending on rotating counterclockwise under state.From anterior position (with reference to Fig. 3), to centre position, (with reference to Fig. 2) moves protuberance 62.On protuberance 62, push away contact site 56.Middle actuation arm 55 is around clockwise rotating centered by horizontal feed axle 28, and the rotation of horizontal feed axle 28 and middle actuation arm 55 is linkedly around clockwise rotating.Link component 50 is with horizontal feed axle 28 linkedly around clockwise rotating, and cloth pushing table 33 forwards moves.Cloth feeding mechanism 70 turns back to the first state (with reference to Fig. 2).

Driving shaft 36 continues around left side depending on rotating counterclockwise under state from the first state.Lobe plate 61 is accompanied by the rotation of driving shaft 36 and continues around rotating counterclockwise.As shown in Figure 4, protuberance 62 from centre position rearward position move.Because contact site 56 moves downwards along the curved surface of lobe plate 61, therefore in the middle of actuation arm 55 centered by horizontal feed axle 28 around left side depending on rotating counterclockwise under state.The rotation of horizontal feed axle 28 and middle actuation arm 55 linkedly around left side depending on rotating counterclockwise under state.Link component 50 with horizontal feed axle 28 linkedly around left side depending on rotating counterclockwise under state, switch the moving direction of cloth pushing table 33.Cloth pushing table 33 rearward moves.As shown in Figure 4, if driving shaft 36 turns to the other end of the scope of the first angle, turn to angle θ 1(with reference to Figure 11), cloth feeding mechanism 70 is in the third state.Contact site 56 is positioned at foot, and cloth pushing table 33 is positioned at rear.Motor 35 makes the rotation direction reversion of driving shaft 36.Driving shaft 36 is around clockwise rotating.Lobe plate 61 be accompanied by driving shaft 36 rotation and around clockwise rotating.Protuberance 62 moves to centre position from rear position.Middle actuation arm 55 centered by horizontal feed axle 28 around clockwise rotating.The rotation of horizontal feed axle 28 and middle actuation arm 55 is linkedly around clockwise rotating.Link component 50 is with horizontal feed axle 28 linkedly around clockwise rotating, and cloth pushing table 33 moves to forefront.Cloth feeding mechanism 70 turns back to the first state.It is mobile that cloth feeding mechanism 70 makes cloth pushing table 33 come and go along fore-and-aft direction by a state action from the first state～third state to another state.When motor 35 is in the time that the first state drives, driving shaft 36 is around left side depending on clockwise rotating under state, and still, driving shaft 36 also can be around left side depending on rotating counterclockwise under state.

The action of cloth feeding mechanism 70 towards rear work feed is described.Cloth feeding mechanism 70 moves between the first state～third state by the driving of motor 35, utilizes the driving of main motor 13 that cloth pushing table 33 is moved up and down and work feed.At cloth feeding mechanism 70 during in the first state (with reference to Fig. 2), the cloth conveying teeth 34 of cloth pushing table 33 is positioned at and roughly consistent position of the upper surface of needle plate 15.If main motor 13 drives, eccentric part 39 is moved upward cloth pushing table 33 with link component 51.Cloth conveying teeth 34 is outstanding upward from the upper surface of needle plate 15.Motor 35 make driving shaft 36 around left side depending on clockwise rotating under state.Poewr transmission mechanism 60 rearward moves cloth pushing table 33.Therefore, cloth feeding mechanism 70 is towards rear work feed.If main motor 13 continues to drive, eccentric part 39 moves cloth pushing table 33 downwards with link component 51, and cloth conveying teeth 34 turns back to and roughly consistent position of the upper surface of needle plate 15.If the driving shaft 36 of motor 35 is around an end of scope that clockwise rotates the first angle, cloth feeding mechanism 70 is in the second state (with reference to Fig. 3).Cloth feeding mechanism 70 stops work feed.Eccentric part 39 further moves cloth pushing table 33 downwards with link component 51.Cloth conveying teeth 34 declines downwards from the upper surface of needle plate 15.Motor 35 make the rotation direction reversion of driving shaft 36 and make driving shaft 36 around left side depending on rotating counterclockwise under state.Poewr transmission mechanism 60 forwards moves cloth pushing table 33.Because cloth conveying teeth 34 declines downwards from the upper surface of needle plate 15, therefore cloth feeding mechanism 70 does not carry out work feed.If main motor 13 continues to drive, eccentric part 39 is moved upward cloth pushing table 33 with link component 51, and cloth conveying teeth 34 turns back to and roughly consistent position of the upper surface of needle plate 15.Due to motor 35 make driving shaft 36 around left side depending on rotating counterclockwise under state, therefore cloth feeding mechanism 70 turns back to the first state (with reference to Fig. 2).Cloth feeding mechanism 70 repeats above-mentioned action, towards rear work feed.

With reference to Fig. 5～Fig. 7, line cut-off machine structure 90 is described.The upside of Fig. 6, downside, right side, left side, rear side, face side is respectively front side, rear side, right side, left side, upside, the downside of Sewing machines 1.Line cut-off machine structure 90 has motor 35, driving shaft 36, cam 68, travel mechanism 91, the first coupling member 93, cuts off actuating unit 96 and cut off member 97.Cam 68 is arranged on the driving shaft 36 of motor 35.Cam 68 is formed on the right flank of lobe plate 61 of grooved cam 65.Cam 68 has the curved surface corresponding with the anglec of rotation of driving shaft 36.Cam 68 has the protuberance 681 outstanding to the radial outside of driving shaft 36 on curved surface.In the time that driving shaft 36 turns to second angle different from the first angle, protuberance 681 acts on the 91(of travel mechanism with reference to Fig. 7, Figure 10).The second angle is the scope of the θ 4～θ 5 shown in Figure 11.At driving shaft 36 during in the second angle, the abutting part 911(aftermentioned of protuberance 681 and travel mechanism 91) connect.Travel mechanism 91 has the first board member 910 and the second board member 920.Travel mechanism 91 is arranged on the rear side of cam 68.The first board member 910 is to form by bending a tabular member.The first board member 910 has abutting part 911, the first arm 912, the second arm 913, the 3rd arm 914 and operating line maintaining part 915.The first arm 912 extends along fore-and-aft direction at the rear side of cam 68.The plate of the first arm 912 is facing to left and right directions.Abutting part 911 is by the leading section of the first arm 912 (ends of cam 68 sides) is bent into circular-arc formation towards left.Abutting part 911 can connect with cam 68.The second arm 913 rearward end from the first arm 912 is extended to left.The plate of the second arm 913 is facing to above-below direction.The second arm 913 has hole portion (omitting diagram) at left part, and pin 916(is with reference to Fig. 6) be inserted in this hole portion.Pin 916 is fixed on the inside of support portion 2.The first board member 910 can rotate centered by pin 916.The 3rd arm 914 rearward extends from the left part of the second arm 913.The plate of the 3rd arm 914 is facing to above-below direction.Operating line maintaining part 915 is to form by the left back end of the 3rd arm 914 is bent into downward to right angle.Operating line maintaining part 915 has hole portion (omitting diagram), and operating line 57 runs through this hole portion.Operating line maintaining part 915 is for keeping operating line 57.Operating line 57 will illustrate in aftermentioned with its action.The 3rd arm 914 has cylindrical portion 918 at lower surface fore-and-aft direction central portion.Cylindrical portion 918 is extended downwards.Cylindrical portion 918 runs through the 921(of the hole portion aftermentioned of the second board member 920).The second board member 920 is tabular component longer on fore-and-aft direction, is arranged on the downside of the 3rd arm 914 of the first board member 910.The rearward end of the second board member 920 is outstanding to the right.The second board member 920 has hole portion (omitting diagram) in outstanding to the right part, and pin 925 is inserted in this hole portion.Pin 925 is fixed on the inside of support portion 2.The second board member 920 can rotate centered by pin 925.The second board member 920 has the cylindrical portion 918 through hole portions 921 of hole portion 921, the first board members 910 longer on fore-and-aft direction at fore-and-aft direction central portion.Therefore, the first board member 910 and the second board member 920 engage with each other.The leading section 922 of the second board member 920 is formed as left oblique front to slight curving circular-arc.The axial region 933(aftermentioned of leading section 922 and the first coupling member 93) connect.

The first coupling member 93 is described.The first coupling member 93 acts on roller 955 by the cam 962 of cut-out actuating unit 96 described later moves moving cutting tool 972.The first coupling member 93 has moving part 932, axial region 950, link component 952 and tangent line knife rest 953 etc.Moving part 932 can move along left and right directions.Moving part 932 has axial region 933, cylinder element 934, board 935, board 936, roller 955, cylindrical portion 937 and square block 938 etc.Axial region 933 is arranged on the left of the leading section 922 of the second board member 920 in the mode that can rotate.Axial region 933 extends along left and right directions.The right-hand member of axial region 933 can connect with the leading section of the second board member 920 922.Bearing 931 cylindraceous supports the left end of axial region 933.Bearing 931 is fixed on the inside of support portion 2, supports axial region 933 in the mode that can make axial region 933 move along left and right directions.Cylinder element 934 is arranged on the left and right directions central portion of axial region 933.Extend along left and right directions in the axle center of cylinder element 934.Axial region 933 runs through cylinder element 934 and is fixed in cylinder element 934.Cylinder element 934 has board 935 integratedly on right side.The plate of board 935 is facing to left and right directions.Axial region 933 runs through board 935.Board 935 has outstanding obliquely upward protuberance 939 at rear side.Protuberance 939 has the 940(of hole portion with reference to Fig. 7 on top).Columned axial region 941 through hole portions 940.Axial region 941 has columned roller 955 at the left of protuberance 939.Roller 955 can rotate with respect to axial region 941.Cylinder element 934 has board 936 integratedly in left side.Axial region 933 runs through board 936.Board 936 has protuberance 942 at rear side.Protuberance 942 is oliquely downward outstanding.Protuberance 942 has the 943(of hole portion with reference to Fig. 5).Axial region 944 is inserted into the 943(of hole portion with reference to Fig. 5) in.Axial region 944 is to right-hand extension.Axial region 944 has the cylindrical portion 937 being fixed on axial region 944 in right part.Board 936 has oliquely downward outstanding protuberance 945 in front side.Protuberance 945 has the 946(of hole portion with reference to Fig. 7 in top ends).Axial region 947 is inserted in hole portion 946.Axial region 947 extends to left.The square block 938(that axial region 947 has quadrangular shape at the left of protuberance 945 is with reference to Fig. 7).Square block 938 can rotate with respect to axial region 947.Spring 968 is arranged between board 936 and bearing 931.Axial region 933 runs through spring 968.Spring 968 applies elastic force to right-hand to moving part 932.Circular tabular board 948 is arranged on the left of the protuberance 945 of board 936.The plate of board 948 is facing to left and right directions.Board 948 is provided with and is cut into rectangular-shaped notch 949(with reference to Fig. 7 at the upside that retreads).Notch 949 is corresponding with position, the size of square block 938.Square block 938 can run through notch 949.If moving part 932 moves along left and right directions, square block 938 along notch 949 at right and left upward sliding.Board 948 is connected at front oblique bottom and the axial region 950 of left surface.Axial region 950 extends to left.Axial region 950 is provided with bearing 951 at left.The bearing 951 being fixed in support portion 2 supports axial region 950 in the mode that can make axial region 950 rotate.Axial region 950 is connected at left and the link component 952 of bearing 951.Link component 952 extends along fore-and-aft direction, is connected in rearward end and circular tangent line knife rest 953.Tangent line knife rest 953 is arranged on bearing 967(aftermentioned) left part.Tangent line knife rest 953 can rotate around bearing 967.Tangent line knife rest 953 is fixed with the moving cutting tool 972 that cuts off member 97 in upper end.Cut off member 97 and comprise moving cutting tool 972 and fixed cutting tool 971.Cut off member 97 be positioned at pin hole 18(with reference to Fig. 2) downside.Fixed cutting tool 971 is fixed on the inside of support portion 2.Moving cutting tool 972 is accompanied by the rotation of tangent line knife rest 953 and moves towards fixed cutting tool 971.Fixed cutting tool 971 is arranged on the position corresponding with the moving range of moving cutting tool 972.Cut off member 97 between moving cutting tool 972 and fixed cutting tool 971, to clip upper thread and bottom line and by upper thread and bottom line cut-out.

Illustrate and cut off actuating unit 96.Cutting off actuating unit 96 is provided for making moving cutting tool 972 move to cut off the power of upper thread and bottom line by the first coupling member 93.Cut off actuating unit 96 there is lower shaft 961, for the cam 962(of the cut-out action of moving cutting tool 972 with reference to Fig. 6, Fig. 7), cam 965 and bearing 967 etc.Axial region 961 extends along left and right directions at travel mechanism's 91 upsides.Lower shaft 961 has the illustrated belt wheel of omission in right part, have rotating shuttle in left part.This belt wheel is connected with upper and lower conveying axis 27 by means of omitting illustrated gear.Lower shaft 961 can be accompanied by the rotation of the main shaft 14 being driven by main motor 13 and rotate.As shown in Figure 6, Figure 7, cam 962 is fixed on axial region 961.Cam 962 has a part of periphery outstanding protuberance 963 forming laterally.Square member 964 is arranged on the left side of cam 962.The cam 965 that is used for the revert action of moving cutting tool 972 is arranged on the left side of square member 964.Cam 965 has a part of periphery outstanding protuberance 966 forming laterally.Axial region 961 can be inserted to the left that bearing 967 is wherein arranged on cam 965.Bearing 967 is fixed on the inside of support portion 2, supports axial region 961 in the mode that can make axial region 961 rotate.Bearing 967 has above-mentioned tangent line knife rest 953 in left part.

The a series of action that line is cut off is described.In the time that cut-out member 97 will cut off line, motor 35 makes driving shaft 36 turn to the second angle.Because driving shaft 36 turns to beyond the scope of the first angle, therefore the protuberance 62 of groove protuberance 691 and lobe plate 61 with contact site 56(with reference to Fig. 8) separate.As shown in figure 11, when driving shaft 36 is during in the second angle, contact site 56 is still in foot, and therefore, cloth feeding mechanism 70 does not move.As shown in figure 10, if driving shaft 36 turns to the second angle, the protuberance 681 of cam 68 connects with abutting part 911.Protuberance 681 rearward pushes abutting part 911.The first board member 910 centered by pin 916 around looking up clockwise rotating under state.If the first board member 910 is around looking up clockwise rotating under state centered by pin 916, cylindrical portion 918, on one side in the interior slip of hole portion 921 of the second board member 920, pushes the side of hole portion 921 on one side to left.Because cylindrical portion 918 is to the side of left pushing hole portion 921, therefore the second board member 920 centered by pin 925 around looking up rotating counterclockwise under state.The leading section 922 of the second board member 920 overcome spring 968 active force and to the axial region 933 of left pushing moving part 932.Axial region 933 moves to left along the inner peripheral surface of bearing 931.Square block 938 along the notch 949(of board 948 with reference to Fig. 8) move to left.Therefore, moving part 932 moves to left.If moving part 932 moves to left, roller 955 moves and is positioned at the contact position contacting with cam 962 to left., roller 955 is from moving to contact position (with reference to Fig. 8～Figure 10) with cam 962 in the right-hand separation point position separating (with reference to Fig. 5～Fig. 7).As shown in figure 10, lower shaft 961 be accompanied by main shaft 14 rotation and around left side depending on being rotated counterclockwise under state.Therefore, cam 962 in left side depending under state around being rotated counterclockwise.The protuberance 963 of cam 962 pushes the roller 955 that is positioned at contact position upward.The clockwise direction that roller 955 is looked around left side under state centered by axial region 933 rotates.Axial region 933 is accompanied by the rotation of roller 955 and looks the clockwise direction rotation under state around left side.Protuberance 945 and the square block 938 of board 936 are accompanied by the rotation of axial region 933 and move depending on the clockwise direction under state around left side centered by axial region 933.Board 948, axial region 950 be accompanied by square block 938 movement and around left side depending on rotating counterclockwise under state.Tangent line knife rest 953 be accompanied by axial region 950 rotation and by means of link component 952 around bearing 967(lower shaft 961) around left side depending on clockwise rotating under state.Moving cutting tool 972 is accompanied by the rotation of tangent line knife rest 953 and moves depending on the clockwise direction under state around left side.Moving cutting tool 972 clips upper thread with bottom line and by upper thread and bottom line cut-out with fixed cutting tool 971.If moving cutting tool 972 cuts off line with tangent line knife rest 953, motor 35 makes driving shaft 36 turn to the angle different from the second angle.Abutting part 911 is separated from one another with the protuberance 681 of cam 68.Cam 68 does not act on travel mechanism 91.Spring 968 is to right-hand pushing moving part 932.Moving part 932 is to right-hand movement.Roller 955 separates with cam 962., roller 955 moves to separation point position (with reference to Fig. 5～Fig. 7) from contact position (with reference to Fig. 8～Figure 10).When moving part 932 is to right-hand when mobile, the axial region 933 of moving part 932 is to the leading section 922 of right-hand pushing the second board member 920.The first board member 910 moves around the counter clockwise direction of looking up under state.Link component 952 because of the elastic force of spring outside diagram around left side depending on clockwise rotating under state.Tangent line knife rest 953 by means of link component 952 around bearing 967 around left side depending on rotating counterclockwise under state.Be accompanied by the rotation of tangent line knife rest 953, moving cutting tool 972 moves depending on the counter clockwise direction under state around left side.Therefore, moving cutting tool 972 separates (with reference to Fig. 6, Fig. 7) with fixed cutting tool 971.Due to link component 952 around left side depending on clockwise rotating under state, therefore axial region 950, board 948 around left side depending on clockwise rotating under state.Square block 938 is accompanied by the rotation of board 948 and moves, and board 936 moves depending on the counter clockwise direction under state around left side centered by axial region 933.Therefore roller 955 is looked the counterclockwise movement under state around left side.Overcome and omit the active force of illustrated spring and do not move and when roller 955 does not move, the protuberance 966 of cam 965 pushes cylindrical portion 937 at link component 952.Roller 955 is looked the counterclockwise movement under state around left side.Moving cutting tool 972 separates with fixed cutting tool 971.

With reference to Figure 12, Figure 13, presser feet reciprocating mechanism 64 and thread clamping mechanism 63 are described.The upside of Figure 12, downside, right side, left side, face side, rear side are respectively upside, downside, right side, left side, front side, the rear sides of presser feet reciprocating mechanism 64 and thread clamping mechanism 63.Presser feet reciprocating mechanism 64 and thread clamping mechanism 63 are contained in the inner side, left part of horn portion 4.Thread clamping mechanism 63 has clamp 75.Clamp 75 is the tabular component extending along the vertical direction, can be taking lower end as axle rotates.Clamp 75 is connected with the tension disk outside diagram.As well-known, tension disk utilizes spring (omitting diagram) to apply tension force to the line being clipped between a pair of cable-clamping disc (omitting diagram).Tension disk has tension force release pin (omitting diagram).At clamp 75, in the time that main counter clockwise direction of looking under state is rotated (with reference to Figure 12), clamp 75 does not act on tension force release pin and utilizes tension disk to apply tension force to upper thread.At clamp 75, in the time that the main clockwise direction of looking under state rotates (with reference to Figure 13), clamp 75 acts on tension force release pin and slows down tension disk and put on the tension force of upper thread.The upper end of clamp 75 is connected with one end of operating line 57.Operating line 57 is from the upper end of clamp 75 to right-hand extension.Operating line 57 runs through the inside of pipe 571.Horn portion 4 has supporting member (outside diagram) in inner right part.Supporting members supports pipe 571.Operating line 57 extends along left and right directions between clamp 75 and supporting member, through column sections 3 and support portion 2.The other end of operating line 57 is fixed on the operating line maintaining part 915(of the first board member 910 of travel mechanism 91 with reference to Fig. 5) on.The first board member 910 makes operating line 57 tighten or relax.

The driving principle of thread clamping mechanism 63 is described.Thread clamping mechanism 63 synchronously moves with the cut-out action of upper thread and bottom line.As mentioned above, cutting off member 97 will be by the cut-out of upper thread and bottom line time, motor 35 makes driving shaft 36 turn to the second angle.The protuberance 681 of cam 68 and the abutting part 911 of the first board member 910 connect (with reference to Fig. 8～Figure 10).The first board member 910 rotates centered by pin 925.Operating line maintaining part 915 is accompanied by the rotation of the first board member 910 and moves to left, and operating line 57 is tightened.As shown in figure 13, if operating line maintaining part 915 stretched operation lines 57, operating line 57 is to right-hand movement.The clamp 75 being connected with operating line 57 rotates around the main clockwise direction of looking under state.As mentioned above, clamp 75 acts on tension force release pin and slows down tension disk and put on the tension force of upper thread.If complete the cut-out of upper thread and bottom line, motor 35 makes driving shaft 36 rotate to the direction away from the second angle.The protuberance 681 of cam 68 with abutting part 911(with reference to Fig. 5～Fig. 7) separate.The operating line maintaining part 915 of the first board member 910, to right-hand movement, makes operating line 57 lax.As shown in figure 12, operating line 57 moves to left.The clamp 75 being connected with operating line 57 rotates around main counter clockwise direction of looking under state.As mentioned above, clamp 75 is removed the active force that acts on tension force release pin, utilizes tension disk to apply tension force to upper thread.

Presser feet reciprocating mechanism 64 is described.As shown in figure 12, presser feet reciprocating mechanism 64 has crank member 71, axle 72, fastened component 73, presser feet and argues for the sake of arguing 74.Shaft-like fastened component 73 is arranged on the above-below direction substantial middle part of depression bar 44.Fastened component 73 extends along fore-and-aft direction.The front side of fastened component 73 is screwed on depression bar 44.Crank member 71 is the sheet material that bending forms.One end of crank member 71 is configured in the below of fastened component 73.Crank member 71, from the below of fastened component 73 to right-hand extension, is bent into right angle and extension upward.Axle 72 is with can be so that the mode that crank member 71 rotates supports the bending part of crank member 71.Presser feet 74 modes of rotating centered by axle (omitting diagram) that can fore-and-aft direction of arguing for the sake of arguing are arranged on the rear side of crank member 71.Presser feet is argued for the sake of arguing and 74 is acted on crank member 71 from below.Operator directly manually rotating operation presser feet argue for the sake of arguing 74, presser feet 17 is moved up and down.The upper end of crank member 71 is connected with one end of operating line 58.Operating line 58 is from crank member 71 to right-hand extension.Operating line 58 runs through pipe 581.Above-mentioned supporting members supports pipe 581.Operating line 58 extends along left and right directions between crank member 71 and supporting member, extends downwards through column sections 3.The above-mentioned knee action bars (omitting diagram) that the other end of operating line 58 can operate with operator is connected.In the time that operator operates above-mentioned knee action bars, the operation that operating line 58 and presser feet reciprocating mechanism 64 are accompanied by above-mentioned knee action bars is moved presser feet 17 between pressing position (with reference to Figure 12) and off-position (with reference to Figure 13).Pressing position is presser feet 17 at itself and cloth conveying teeth 34(with reference to Fig. 2) between clamp the position of cloth.Off-position is that presser feet 17 is upward away from the position of cloth conveying teeth 34.

The driving of presser feet reciprocating mechanism 64 is described with reference to Figure 12, Figure 13.Operator, in the time making operation, moves presser feet 17.Operator, in the time will making presser feet 17 (with reference to Figure 13) is mobile to pressing position (with reference to Figure 12) from off-position, makes operating line 58 lax by operation knee action bars.If knee action bars makes operating line 58 lax, operating line 58 moves to left.Crank member 71 rotates (with reference to Figure 12) around main counter clockwise direction of looking under state centered by axle 72.The part of extending from axle 72 to left of crank member 71 moves downwards.Fastened component 73 and depression bar 44 move downwards because of the active force of spring 45.The presser feet 17 being connected with depression bar 44 moves downwards, and the position of presser feet 17 becomes pressing position.When in the position that will make presser feet 17, from pressing position (with reference to Figure 12) to off-position, (with reference to Figure 13) is mobile, knee action bars makes operating line 58 tighten downwards according to operator's operation.Operating line 58 is to right-hand movement.Crank member 71 rotates (with reference to Figure 13) around the main clockwise direction of looking under state centered by axle 72.The part of extending from axle 72 to left of crank member 71 is moved upward, and above pushes away upward fastened component 73 and is fixed on the depression bar 44 on fastened component 73.The presser feet 17 being connected with depression bar 44 is moved upward, and the position of presser feet 17 becomes off-position.

As mentioned above, in the present embodiment, by driving shaft 36 in the scope of the first angle to a direction and rightabout rotation, grooved cam 65 moves Poewr transmission mechanism 60 and makes cloth pushing table 33 along continuous straight runs motions.Sewing machines 1 can carry out work feed by drive motor 35.Turn to the second angle by driving shaft 36, cam 68 travel mechanism 91 is moved and the roller 955 that makes the first coupling member 93 from separation point position (with reference to Fig. 5～Fig. 7) mobile to contact position (Fig. 8～Figure 10).Sewing machines 1 is delivered to moving cutting tool 972 by means of roller 955 by the rotation of axial region 961 by making roller 955 move to contact position.Moving cutting tool 972 clips upper thread and bottom line with fixed cutting tool 971 upper thread and bottom line is cut off.Therefore, Sewing machines 1 can also be by the motor for work feed 35 for generation of the power that the roller 955 of the first coupling member 93 is moved for line is cut off.For Sewing machines 1, for example, during with solenoid that is provided in addition making the first coupling member 93 to move etc. compared with, can reduce costs.

In the present embodiment, thread clamping mechanism 63 synchronously slows down or strengthens with the cut-out action of upper thread and bottom line the tension force that puts on upper thread.Cam 68 is turned to the second angle and by means of the first board member 910 and operating line 57, thread clamping mechanism 63 is moved by driving shaft 36.Thread clamping mechanism 63 slows down the tension force that puts on upper thread.Motor 35 is by making driving shaft 36 rotate and by means of the first board member 910 and operating line 57, thread clamping mechanism 63 be moved to the direction away from the second angle.Thread clamping mechanism 63 strengthens the tension force that puts on upper thread.Sewing machines 1 can be by the motor for work feed 35 as the power that thread clamping mechanism 63 is moved by means of the first board member 910 and operating line 57.Therefore, for Sewing machines 1, for example, during with solenoid that is provided in addition making thread clamping mechanism 63 to move etc. compared with, can reduce costs.

In the above-described embodiment, motor 35 is equivalent to motor of the present invention.Poewr transmission mechanism 60 is equivalent to the first actuating unit of the present invention.Grooved cam 65 and cam 68 are equivalent to actuating member of the present invention.Grooved cam 65 is equivalent to the first cam of the present invention.Cam 68 is equivalent to the second cam of the present invention.Axial region 961 is equivalent to axial region of the present invention.Cam 962 is equivalent to the 3rd cam of the present invention.Roller 955 is equivalent to the portion that is applied of the present invention.Thread clamping mechanism 63 is equivalent to thread-loosening device of the present invention.The first board member 910 is equivalent to the 3rd coupling member of the present invention with operating line 57.

The present invention is not limited to above-mentioned embodiment, can carry out various distortion.For example, do not limit for grooved cam 65 and the shape of cam 68.Grooved cam 65 can be deformed into the cam of plane, tabular, drum.

Grooved cam 65 and cam 68 these two cams can be deformed into a grooved cam with two protuberances.Rotate in the scope of the first angle by driving shaft 36, a protuberance acts on Poewr transmission mechanism 60.Turn to the second angle by driving shaft 36, another protuberance acts on travel mechanism 91.This grooved cam also can not have two protuberances and have a protuberance.In the time that driving shaft 36 rotates in the scope of the first angle, this protuberance acts on Poewr transmission mechanism 60.In the time that driving shaft 36 turns to the second angle, this protuberance acts on travel mechanism 91.

Driving shaft 36 has grooved cam 65 and cam 68 these two cams, but the quantity of cam is not limited.For example, cam also can also have three cams having outside grooved cam 65.These three cams can act on respectively the member (member, the member that makes presser feet motion etc. that for example make line stripper move) beyond cloth pushing table.Can there are three the second different angles beyond the scope of the first angle that driving shaft 36 rotates, so that these three cams act on respectively corresponding member.

In the time that motor 35 makes driving shaft 36 turn to the second angle, Sewing machines 1 can carry out the action beyond thread clamping mechanism 63 and the first coupling member 93.For example, Sewing machines 1 also can move presser feet 17 in the time that motor 35 makes driving shaft 36 turn to the second angle.The operating line maintaining part 915(of the first board member 910 is with reference to Fig. 5) with the operating line 58(of presser feet reciprocating mechanism 64 with reference to Figure 12) be connected.If motor 35 makes driving shaft 36 turn to the second angle, operating line maintaining part 915, around looking up clockwise rotating under state, tightens operating line 58.To off-position, (with reference to Figure 13) moves presser feet 17.If motor 35 makes driving shaft 36 rotate to the direction away from the second angle, operating line maintaining part 915, around looking up rotating counterclockwise under state, makes operating line 58 lax.Presser feet 17 is mobile to pressing position (with reference to Figure 12).Therefore, Sewing machines 1 can be by the motor for work feed 35 for generation of the power that the first board member 910 and operating line 58 is moved for presser feet 17 is moved.The first board member 910, operating line 57 and presser feet reciprocating mechanism 64 are equivalent to the 5th coupling member of the present invention.

Sewing machines 1 also can be configured in the time that motor 35 makes driving shaft 36 turn to the second angle, line stripper 76 be moved.With reference to Figure 14, Figure 15, this variation is described.The upside of Figure 14, downside, right side, left side, face side, rear side are respectively upside, downside, left side, right side, rear side, the front sides of Sewing machines 1.Line stripper 76 is arranged on the rear side of the left part of horn portion 4.Line stripper 76 has crank member 77, rotating shaft 79, pipeline purging bar 78 and helical spring 80.

Crank member 77 has the first member 771, second component 772 and the 3rd member 773.The first member 771 is the tabular component of L word shape roughly.The first member 771 is fixed with one end of operating line 81 in end, upper right.The other end of operating line 81 is fixed on the operating line maintaining part 915(of the first board member 910 with reference to Fig. 5) on.The first member 771 has pin 774 at the bend of downside.Pin 774 supports the first member 771 in the mode that can make the first member 771 rotate.The left part of second component 772 and the first member 771 is connected, and extends downwards.Second component 772 moves up and down because of the rotation of the first member 771.The 3rd member 773 is connected with the lower end of second component 772.The 3rd member 773 has rotating shaft 79 in right part.The 3rd member 773 rotates rotating shaft 79 by moving up and down of second component 772.Rotating shaft 79 forwards extends.Pipeline purging bar 78 is arranged on the front end of rotating shaft 79.Pipeline purging bar 78 to the right below extends.The top of pipeline purging bar 78 forwards bends.Pipeline purging bar 78 is accompanied by the rotation of rotating shaft 79 and rotates.Helical spring 80 is wound on the leading section of rotating shaft 79.Helical spring 80 applies elastic force towards the position of readiness shown in Figure 14 to pipeline purging bar 78.

The action of line stripper 76 is described.In the time that line stripper 76 will move and carry out pipeline purging, motor 35 makes driving shaft 36 turn to the second angle.Operating line maintaining part 915, around looking up clockwise rotating under state, tightens operating line 81.Operating line 81 draws the first member 771 of crank member 77.The first member 771 rotating counterclockwise under backsight state centered by pin 774.Second component 772 is moved upward.The 3rd member 773 rotating counterclockwise under backsight state.Rotating shaft 79 rotating counterclockwise under backsight state.Pipeline purging bar 78 is rotating counterclockwise around backsight state from position of readiness.Move to the pipeline purging position (with reference to Figure 15) of the below that is positioned at sewing needle 8 on the top of pipeline purging bar 78.Pipeline purging bar 78 in the process moving to pipeline purging position, cross sewing needle 8 below.Pipeline purging bar 78 catches on the upper thread extending from sewing needle 8 downwards.If pipeline purging bar 78 catches on upper thread, motor 35 makes driving shaft 36 rotate to the direction away from the second angle.Operating line maintaining part 915, around looking up rotating counterclockwise under state, makes operating line 81 lax.Pipeline purging bar 78 moves to position of readiness because of the active force of helical spring 80.Therefore, pipeline purging bar 78 carries out pipeline purging to upper thread.

As mentioned above, Sewing machines 1 can be by the motor for work feed 35 for generation of the power that operating line 81 is moved for line stripper 76 is moved.The first board member 910 and operating line 81 are equivalent to the 4th coupling member of the present invention.

For carrying out the structure of work feed and can being out of shape for the structure that line is cut off.Below, the Sewing machines 1 as the second embodiment of the variation of the first embodiment with reference to Figure 16, Figure 17 explanation.In the following description, the member identical with the first embodiment represents with identical Reference numeral, omits detailed explanation.Figure 16, Figure 17 represent that the 2(of support portion of Sewing machines is with reference to Fig. 1) the part of internal mechanism, the upside of Figure 16, Figure 17, downside, upper left side, lower right side, lower-left side, upper right side are respectively upside, downside, left side, right side, front side, the rear sides of Sewing machines 1.

The mechanism that makes cloth pushing table 33 along continuous straight runs motions is described.At Figure 16, Tu17Zhong, omit and be arranged on cloth conveying teeth 34(on cloth pushing table 33 with reference to Fig. 2) diagram.Motor 35 is fixed with cam 981 on the top of driving shaft 36.Cam 981 has to the outstanding protuberance 982 of the orthogonal direction of the direction of extending with driving shaft 36.Linking part 983 is positioned at the oblique front side, a left side of cam 981.Linking part 983 extends along the vertical direction.Linking part 983 has axial region 984 in lower end.Axial region 984 runs through linking part 983 along left and right directions.Linking part 983 is fixed on axial region 984.Omit illustrated supporting member and support axial region 984 in the mode that can make axial region 984 rotate.Omit illustrated spring and rearward linking part 983 is applied to elastic force.Linking part 983 has outstanding to the right cylindrical portion 985 on right flank.Cylindrical portion 985 contacts with the outer peripheral face of cam 981.The leading section of the upper end of linking part 983 and cloth pushing table 33 is connected.

Illustrate and how to make cloth pushing table 33 carry out horizontal direction action.Motor 35 rotates driving shaft 36 in the scope of the first angle to a direction and opposite direction.Above-mentioned spring rearward applies elastic force to linking part 983, therefore, cylindrical portion 985 along be fixed on the cam 981 on driving shaft 36 protuberance 982 shape forwards, backwards direction move.Linking part 983 rotates centered by axial region 984 by the movement of cylindrical portion 985.Linking part 983 makes cloth pushing table 33 along continuous straight runs motions.The mode that cloth pushing table 33 is moved is along the vertical direction identical with the first embodiment, and therefore description thereof is omitted.

The mechanism being used for upper thread and bottom line cut-out is described.Driving shaft 36 has cam 987 on the right side of cam 981.The diameter of cam 987 is less than the diameter of cam 981.Cam 987 has protuberance 988, and this protuberance 988 acts on the second coupling member 99(aftermentioned in the time that driving shaft 36 turns to the second angle different from the first angle).In the present embodiment, protuberance 988 is outstanding to the orthogonal direction of the direction of extending with driving shaft 36.The second coupling member 99 is arranged on the below of cam 981.The second coupling member 99 utilizes the driving of motor 35 that moving cutting tool 972 is moved.The second coupling member 99 has link component 990, link component 991 and tangent line knife rest 992.Link component 990 is positioned at the rear downside of cam 987.Pin 993 is inserted in the bottom of link component 990, is fixed on the inside of support portion 2.Link component 990 is oblique upper extension backward from bottom, can centered by pin 993, rotate.Link component 990 has cylindrical portion 994 at the slightly upside of pin 993.Cylindrical portion 994 is outstanding to left, contacts with the outer peripheral face of cam 987.Spring outside diagram applies elastic force towards the direction of cam 987 to link component 990 to cylindrical portion 994.Link component 991 is arranged on the right side of the upper end of link component 990, is connected with mode and the link component 990 that can rotate by the pin outside diagram.Link component 991 extends to the below of retreading.The arm 995 of tangent line knife rest 992 is arranged on the right side of the bottom of link component 991, is connected with mode and the link component 991 that can rotate by the pin outside diagram.Tangent line knife rest 992 can rotate around supporting member 996 cylindraceous.Tangent line knife rest 992 has with the left side of the end of arm 995 opposition sides the moving cutting tool 972 that cuts off member 97.

The cut-out of upper thread and bottom line is described.Cutting off member 97 will be by the cut-out of upper thread and bottom line time, motor 35 makes driving shaft 36 turn to the second angle.As shown in figure 17, the protuberance 988 of cam 987 pushes cylindrical portion 994 downwards.Link component 990 centered by pin 993 around right side depending on clockwise rotating under state.Move downwards by the rotation of link component 990 upper end of link component 991.The lower end of link component 991 rearward pushes the arm 995 of tangent line knife rest 992.Tangent line knife rest 992 around right side depending on rotating counterclockwise under state.Moving cutting tool 972 moves, and between itself and fixed cutting tool 971, upper thread and bottom line is cut off.After line is cut off, motor 35 makes driving shaft 36 to rotate away from the mode of the second angle.Link component 990 because of the active force of spring outside diagram centered by pin 993 around right side depending on rotating counterclockwise under state.Moving cutting tool 972 by the rotation of link component 990 by means of link component 990, link component 991 and tangent line knife rest 992 to moving away from the direction of fixed cutting tool 971.

As mentioned above, in the second embodiment, by driving shaft 36 in the scope of the first angle to a direction and rightabout rotation, cam 981 is by rotating linking part 983 to make cloth pushing table 33 along continuous straight runs motions.Sewing machines 1 can carry out work feed by drive motor 35.Turn to the second angle by driving shaft 36, cam 987 can make the second coupling member 99 move and moving cutting tool 972 is moved.Moving cutting tool 972 moves and between itself and fixed cutting tool 971, upper thread and bottom line is cut off.Therefore, Sewing machines 1 can also be by the motor for work feed 35 for generation of the power that the second coupling member 99 is moved for line is cut off.

Linking part 983 is equivalent to the first actuating unit of the present invention.Cam 981 and cam 987 are equivalent to actuating member of the present invention.Cam 981 is equivalent to the first cam of the present invention.Cam 987 is equivalent to the second cam of the present invention.

Claims

1. a Sewing machines, is characterized in that, has:

Main motor (13), its driving main shaft (14);

Work feed motor (35), it rotates driving shaft (36);

Cloth pushing table (33), its horizontal supporting cloth conveying teeth (34);

Upper and lower actuating unit (47), its action that drives into by above-mentioned main motor is done, and above-mentioned cloth pushing table is moved along the vertical direction;

The first actuating unit (60,983), its action that drives into by above-mentioned work feed motor is done, and makes above-mentioned cloth pushing table along continuous straight runs motion;

The second actuating unit (57,64,81,91,99,910), its action that drives into by above-mentioned work feed motor is done, and makes other members different from above-mentioned cloth pushing table (63,76,93,97) motion; And

Actuating member (65,68,981,987), it is arranged on above-mentioned driving shaft, makes above-mentioned the first actuating unit and above-mentioned the second actuating unit motion by the driving of above-mentioned work feed motor,

Above-mentioned actuating member makes above-mentioned first actuating unit motion to a direction and opposite direction rotation by above-mentioned driving shaft in the scope of the first angle, makes above-mentioned the second actuating unit motion by above-mentioned drive shaft turns to the second angle different from the first angle.

2. Sewing machines according to claim 1, is characterized in that,

Above-mentioned actuating member has:

The first cam (65,981), it acts on above-mentioned the first actuating unit in the time that above-mentioned driving shaft rotates in the scope of above-mentioned the first angle; And

The second cam (68,987), it acts on above-mentioned the second actuating unit during to above-mentioned the second angle in above-mentioned drive shaft turns.

3. Sewing machines according to claim 1, is characterized in that, has:

The 3rd cam (962), it is arranged on the axial region (961) that can rotate;

Cut off member (97), the moving cutting tool (972) that it has fixed cutting tool (971) and moves with respect to above-mentioned fixed cutting tool cuts off line between above-mentioned fixed cutting tool and above-mentioned moving cutting tool;

The first coupling member (93), itself and above-mentioned moving cutting tool are connected, and have the portion that is applied (955) as the position for above-mentioned the 3rd cam wheel; And

Travel mechanism (91), it is approached above-mentioned the 3rd cam from the separation point position separating with above-mentioned the 3rd cam and is made the above-mentioned portion of being applied move to the contact position that can be subject to above-mentioned the 3rd cam wheel by the above-mentioned portion that is applied that makes above-mentioned the first coupling member,

Above-mentioned other members comprise above-mentioned the first coupling member,

Above-mentioned the second actuating unit comprises above-mentioned travel mechanism,

Above-mentioned the first coupling member moves above-mentioned moving cutting tool by above-mentioned the 3rd cam wheel in the above-mentioned portion of being applied, above-mentioned actuating member makes the motion of above-mentioned travel mechanism by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes the above-mentioned portion that is applied of above-mentioned the first coupling member move to above-mentioned contact position from above-mentioned separation point position.

4. Sewing machines according to claim 2, is characterized in that, has:

The 3rd cam, it is arranged on the axial region that can rotate;

Cut off member, the moving cutting tool that it has fixed cutting tool and moves with respect to above-mentioned fixed cutting tool cuts off line between above-mentioned fixed cutting tool and above-mentioned moving cutting tool;

The first coupling member, itself and above-mentioned moving cutting tool are connected, and have the portion that is applied as the position for above-mentioned the 3rd cam wheel; And

Travel mechanism, it is approached above-mentioned the 3rd cam from the separation point position separating with above-mentioned the 3rd cam and is made the above-mentioned portion of being applied move to the contact position that can be subject to above-mentioned the 3rd cam wheel by the above-mentioned portion that is applied that makes above-mentioned the first coupling member,

Above-mentioned the first coupling member is applied portion and above-mentioned moving cutting tool is moved in above-mentioned by means of above-mentioned the 3rd cam wheel,

Above-mentioned the second cam makes the motion of above-mentioned travel mechanism by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes the above-mentioned portion that is applied of above-mentioned the first coupling member move to above-mentioned contact position from above-mentioned separation point position.

5. Sewing machines according to claim 1, is characterized in that,

Above-mentioned other members comprise cut-out member (97), and the moving cutting tool (972) that this cut-out member has fixed cutting tool (971) and moves with respect to above-mentioned fixed cutting tool cuts off line between above-mentioned fixed cutting tool and above-mentioned moving cutting tool,

Above-mentioned the second actuating unit comprises the second coupling member (99), and this second coupling member and above-mentioned moving cutting tool are connected, and by the driving of above-mentioned work feed motor, above-mentioned moving cutting tool is moved,

Above-mentioned actuating member makes above-mentioned the second coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned moving cutting tool is moved.

6. Sewing machines according to claim 2, is characterized in that,

Above-mentioned other members comprise cut-out member, and the moving cutting tool that this cut-out member has fixed cutting tool and moves with respect to above-mentioned fixed cutting tool cuts off line between above-mentioned fixed cutting tool and above-mentioned moving cutting tool,

Above-mentioned the second actuating unit comprises the second coupling member, and this second coupling member and above-mentioned moving cutting tool are connected, and by the driving of above-mentioned work feed motor, above-mentioned moving cutting tool is moved,

Above-mentioned the second cam makes above-mentioned the second coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned moving cutting tool is moved.

7. Sewing machines according to claim 1, is characterized in that,

Above-mentioned other members comprise thread-loosening device (63), and this thread-loosening device is used for slowing down the tension force of upper thread,

Above-mentioned the second actuating unit comprises the 3rd coupling member (57,910), and the 3rd coupling member and above-mentioned thread-loosening device are connected, and makes above-mentioned thread-loosening device motion by the driving of above-mentioned work feed motor,

Above-mentioned actuating member makes above-mentioned the 3rd coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes above-mentioned thread-loosening device motion.

8. Sewing machines according to claim 2, is characterized in that,

Above-mentioned other members comprise thread-loosening device, and this thread-loosening device is used for slowing down the tension force of upper thread,

Above-mentioned the second actuating unit comprises the 3rd coupling member, and the 3rd coupling member and above-mentioned thread-loosening device are connected, and makes above-mentioned thread-loosening device motion by the driving of above-mentioned work feed motor,

Above-mentioned the second cam makes above-mentioned the 3rd coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes above-mentioned thread-loosening device motion.

9. Sewing machines according to claim 3, is characterized in that,

10. Sewing machines according to claim 4, is characterized in that,

11. Sewing machiness according to claim 5, is characterized in that,

12. Sewing machiness according to claim 6, is characterized in that,

13. according to the Sewing machines described in any one in claim 1,3,5,7,9,11, it is characterized in that,

Above-mentioned other members comprise line stripper (76), and the upper thread that this line stripper is used between sewing needle (8) and the above-mentioned cloth conveying teeth to being in the top that is positioned at above-mentioned cloth conveying teeth carries out pipeline purging,

Above-mentioned the second actuating unit comprises the 4th coupling member (81,910), and the 4th coupling member and above-mentioned line stripper are connected, and makes above-mentioned line stripper motion by the driving of above-mentioned work feed motor,

Above-mentioned actuating member makes above-mentioned the 4th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes above-mentioned line stripper motion.

14. according to the Sewing machines described in any one in claim 2,4,6,8,10,12, it is characterized in that,

Above-mentioned other members comprise line stripper, and this line stripper is used for the upper thread being between the sewing needle above above-mentioned cloth conveying teeth and above-mentioned cloth conveying teeth to carry out pipeline purging,

Above-mentioned the second actuating unit comprises the 4th coupling member, and the 4th coupling member and above-mentioned line stripper are connected, and makes above-mentioned line stripper motion by the driving of above-mentioned work feed motor,

Above-mentioned the second cam makes above-mentioned the 4th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby makes above-mentioned line stripper motion.

15. according to the Sewing machines described in any one in claim 1 to 12, it is characterized in that,

Above-mentioned other members comprise presser feet (17), and this presser feet and above-mentioned cloth conveying teeth relatively arrange, can and above-mentioned cloth conveying teeth between clamp between the pressing position of cloth and the off-position away from above-mentioned cloth conveying teeth and move,

Above-mentioned the second actuating unit comprises the 5th coupling member (64), and the 5th coupling member and above-mentioned presser feet are connected, and by the driving of above-mentioned work feed motor, above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position,

Above-mentioned actuating member makes above-mentioned the 5th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position.

16. Sewing machiness according to claim 13, is characterized in that,

Above-mentioned other members comprise presser feet, and this presser feet and above-mentioned cloth conveying teeth relatively arrange, can and above-mentioned cloth conveying teeth between clamp between the pressing position of cloth and the off-position away from above-mentioned cloth conveying teeth and move,

Above-mentioned the second actuating unit comprises the 5th coupling member, and the 5th coupling member and above-mentioned presser feet are connected, and by the driving of above-mentioned work feed motor, above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position,

17. Sewing machiness according to claim 14, is characterized in that,

Above-mentioned the second cam makes above-mentioned the 5th coupling member motion by above-mentioned drive shaft turns to above-mentioned the second angle, thereby above-mentioned presser feet is moved between above-mentioned pressing position and above-mentioned off-position.