CN1309892C - Automatic cutting device for sewing machine - Google Patents
Automatic cutting device for sewing machine Download PDFInfo
- Publication number
- CN1309892C CN1309892C CNB011346833A CN01134683A CN1309892C CN 1309892 C CN1309892 C CN 1309892C CN B011346833 A CNB011346833 A CN B011346833A CN 01134683 A CN01134683 A CN 01134683A CN 1309892 C CN1309892 C CN 1309892C
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- cutting knife
- connecting rod
- sewing machines
- drive
- fixed
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Abstract
The present invention relates to an automatic cloth cutting device for sewing machines, which comprises a drive device, a control device and a cutting knife moving device, wherein the drive device comprises a drive shaft, an eccentric wheel assembly connected with the drive shaft, a connecting rod assembly composed of four connecting rods, and a fixed rocking lever; the control device comprises a rotary knob fixed on a hollow fixing slide block, and a hollow sleeve tube is arranged in the hollow point of the fixing slide block, so that the rotating shaft connected to a lower hole of the fourth connecting rod in the connecting rod assembly is inserted in the hollow point of the sleeve tube and fixed on the fixing slide block and the rotary knob; the cutting knife moving device comprises a cutting knife and a moving rod; the cutting knife moving device is fixed to a lower hole of the first connecting rod. When a sewing machine is used for cutting cloth, the drive device containing the connecting rod assembly is driven by a motor of the sewing machine to drive the moving rod and the cutting knife, so that the moving rod and the cutting knife can respectively make a reciprocating motion up and down; when the sewing machine is used for sewing by a single needle without a cutting knife, the cutting knife can be controlled by the rotary knob to be in the rise state, then, the connecting rod assembly can only make a reciprocating swing motion left and right, and the cutting knife moving device does not make an up-and-down motion so as to protect users.
Description
Technical field
The present invention relates to a kind of Sewing machines, especially a kind of automatic cloth-cutting apparatus of Sewing machines.
Background technology
Generally after two blocks of clothes are sewed up, beyond suture, can produce unnecessary and uneven selvedge, must be pruned, otherwise can influence selvedge that clothing exterior quality, particularly collar, sack, the front part of a Chinese robe or jacket etc. have particular curve when pruning, take a lot of work especially.Problem for the selvedge that solves Sewing machines is pruned also has the Qie Bubian device, shown in " the Qie Bubian device of Sewing machines " of No. the 103859th, TaiWan, China patent gazette.This is existing cuts the selvedge device in use, is added on the Sewing machines temporarily again, and not only volume is big for it, complicated integral structure, and need set up comparatively power consumption of a CD-ROM drive motor in addition because of cutting on the selvedge device.
In addition, though existing cloth-cutting apparatus is at the cutting knife control of Qie Bubian device, also be combined with setting up of upper knife edge lowering or hoisting gear, but because of it protrudes in the car neck location, allow the user at sewing and when not using the Qie Bubian device, easy accidentally this device of false touch and cutting knife is fallen, and then the user is damaged.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of automatic cloth-cutting apparatus of Sewing machines, it has processing ease, tool security, simple structure and advantage for ease of maintenaince.
Another object of the present invention is to provide a kind of automatic cloth-cutting apparatus of Sewing machines, this installs when carrying out the single needle sewing, can be simultaneously with unnecessary selvedge excision of not wanting.
Another object of the present invention is to provide the automatic cloth-cutting apparatus of a kind of processing ease, tool security, simple structure and Sewing machines for ease of maintenaince.
In order to achieve the above object, the invention provides a kind of automatic cloth-cutting apparatus of Sewing machines, comprise: a drive unit, it mainly comprises a driving shaft, an eccentric group, connection rod set, a fixing rocking bar; One end of this driving shaft is connected to the belt pulley of Sewing machines, and in order to drive the action of whole Sewing machines, the other end then is connected to eccentric group; This eccentric group is by pad and eccentric block with the pin fixed combination together, and the cover connecting rod of loading onto Needle bearing and hollow forms in regular turn again, and connecting rod by about two wheel rims formed; Fixedly rocking bar has three holes, and a stomidium engages with first connecting pin with the last hole of the second connecting rod of connection rod set, and middle hole uses second connecting pin to engage with the following wheel rim of connecting rod, and another stomidium then is fixed on the body of Sewing machines; This connection rod set mainly is made up of four connecting rods, the following hole of first connecting rod is connected to first fixedly on the protruding axle of slide block of cutting knife mobile device, last hole is connected with the following hole of second connecting rod and last Kong Yidi three connecting pins of third connecting rod, and last Kong Yidi four connecting pins of following Kong Zeyu the 4th connecting rod of third connecting rod connect; One cutting knife mobile device, it mainly comprises a cutting knife and a carriage release lever, this first fixedly the protruding axle of another of slide block insert in the end of carriage release lever of hollow, and carriage release lever passed second copper sheathing on the body that is fixed in Sewing machines, the other end that then carriage release lever is had a screw thread inserts the second fixing slide block and with fixed by nut, in regular turn cutting knife, tool rest and tool rest contiguous block are fixed to second at last fixedly on the slide block, operate so that cutting knife can drive with the motor of Sewing machines; An and control device, it mainly comprises a knob, this knob is to be fixed in the 3rd fixedly on the slide block of hollow with screw, and the 3rd fixedly the middle vacancy of slide block install a hollow first copper sheathing, can insert vacancy in this first copper sheathing so that be connected to the turning cylinder in hole under the 4th connecting rod, and be fixed in the 3rd fixedly on slide block and the knob; When cutting cloth, at first the center cross bar with knob places horizontal level, four connecting rods of connection rod set all are in the position perpendicular to knob center cross bar at this moment, then drive the motor of Sewing machines, the be rotationally connected belt pulley of motor, and then drive driving shaft and eccentric group is rotated, and make fixing rocking bar swing an angle and the moving up and down of drivening rod group, drive carriage release lever at last again and cutting knife can be pumped, and then reach the function of cutting cloth automatically; When not cutting cloth, the center cross bar of knob is placed stand up position, the turning cylinder of this timed unit can rotate an angle, and cutting knife promotes and is fixed on the ad-hoc location because of being connected in connection rod set on the turning cylinder angle that tilts, cutting knife can not pumped because of the motor that drives Sewing machines, but when motor that drives Sewing machines and rotating pulley, still can make drive shaft turns simultaneously, further drive the eccentric group that is connected in driving shaft, the fixedly rocking bar of eccentric group below and be fixed in this fixedly second connecting rod of the connection rod set of rocking bar, make connection rod set can tilt an angle and left and right sides reciprocally swinging, though this moment cutting knife not with move and can't carry out Qie Bu, but still can carry out the single needle sewing.
The present invention has improved existing control lever, existing upper knife edge elevating mechanism is replaced with the knob that is easy to control, allow the user when carrying out the single needle flush joint, can be because of the outstanding control lever of the car neck of false touch Sewing machines, cause cutting knife to put down and may hurt the user.
The connection rod set of automatic cloth-cutting apparatus provided by the invention drives and is connected whole automatic cloth-cutting apparatus being used for.This connection rod set is made up of four connecting rods, in order to drive the motion of cutting knife mobile device, the following hole of this first connecting rod is connected to first fixedly on the slide block of cutting knife mobile device, last Kong Ze is connected to the following hole of second connecting rod and the last hole of third connecting rod, the last hole of second connecting rod is connected to a fixedly hole of rocking bar, the last hole of following Kong Zeyu the 4th connecting rod of third connecting rod connects, the turning cylinder of control device is inserted in the following hole of last the 4th connecting rod, to cause control device can at first control moving of this connection rod set, the rise of further controlling cutting knife with fall.
The automatic cloth-cutting apparatus of Sewing machines of the present invention is when cutting cloth, at first the center cross bar with knob places horizontal level, four connecting rods of connection rod set all are in the position perpendicular to knob center cross bar at this moment, then drive the motor of Sewing machines, and then the drive belt pulley, the rotation of driving shaft and eccentric group, and make fixing rocking bar swing an angle and further moving up and down of drivening rod group, drive carriage release lever at last again and cutting knife can be pumped, and then reach the function of cutting cloth automatically; Otherwise, when not cutting cloth, the center cross bar of knob can be placed stand up position, the turning cylinder of this timed unit can rotate an angle, and cutting knife promotes and is fixed on the position because of being connected in connection rod set on the turning cylinder angle that tilts, so cutting knife can't pump because of the motor that drives Sewing machines; But when motor that drives Sewing machines and rotating pulley, still can make drive shaft turns simultaneously, further drive the eccentric group that is connected in driving shaft, the fixedly rocking bar of eccentric group below, and be fixed in this fixedly second connecting rod of the connection rod set of rocking bar, can tilt an angle and left and right sides reciprocally swinging of connection rod set then, though the cutting knife of this moment not with move, but still can carry out the single needle sewing.
Description of drawings
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is that the automatic cloth-cutting apparatus of Sewing machines of the present invention is installed in the schematic diagram on the Sewing machines;
Fig. 2 is that the automatic cloth-cutting apparatus of Sewing machines of the present invention is installed in the front view on the Sewing machines, and wherein this cutting knife is the user mode when cutting the cloth action automatically;
Fig. 3 is the exploded view of the automatic cloth-cutting apparatus of Sewing machines of the present invention;
Fig. 4 is that the automatic cloth-cutting apparatus of Sewing machines of the present invention is installed in the left side view on the Sewing machines, and wherein this cutting knife is the user mode when cutting the cloth action automatically;
Fig. 5 is that the automatic cloth-cutting apparatus of Sewing machines of the present invention is installed in the left side view on the Sewing machines, and wherein this cutting knife is the rise state when not using;
Fig. 6 is the stereogram of automatic cloth-cutting apparatus when cutting cloth automatically of Sewing machines of the present invention, and wherein this cutting knife is a upper dead center position of cutting cloth automatically;
Fig. 7 is the stereogram of automatic cloth-cutting apparatus when cutting cloth automatically of Sewing machines of the present invention, and wherein this cutting knife is inactive state and does not move.
Symbol description among the figure:
1 Sewing machines
2 belt pulleys
5 automatic cloth-cutting apparatus
10 drive units
12 driving shafts
14 eccentric group
15 pins
16 pads
17 eccentric blocks
18 Needle bearings
19 connecting rods
25 fixing rocking bars
30 connection rod set
31 first connecting rods
32 second connecting rods
33 third connecting rods
34 the 4th connecting rods
40 control device
41 center cross bars
42 knobs
43 the 3rd fixing slide blocks
44 first copper sheathings
45 turning cylinders
50 cutting knife mobile devices
52 first fixing slide blocks
54 second fixing slide blocks
56 second copper sheathings
58 carriage release levers
60 cutting knifes
62 tool rests
63 tool rest contiguous blocks
71 first connecting pins
72 second connecting pins
73 the 3rd connecting pins
74 the 4th connecting pins
The specific embodiment
Please refer to Fig. 1 to Fig. 7, the present invention is described in detail.
The automatic cloth-cutting apparatus 5 of Sewing machines of the present invention as shown in Figures 1 and 2, comprises a drive unit 10, one control device 40 and a cutting knife mobile device 50.
Fig. 3 is the exploded view according to the automatic cloth-cutting apparatus of Sewing machines of the present invention.Drive unit 10 mainly comprises fixedly rocking bar 25 of a driving shaft 12, one eccentric group 14, one connection rod set 30.One end of driving shaft 12 is connected to a belt pulley 2, in order to drive the action of whole Sewing machines 1, for example, cut cloth action and single needle sewing, and the other end inserts the middle vacancy of eccentric group 14, to drive the action of whole cloth-cutting apparatus.The composition of eccentric group 14, be to be connected and fixed on eccentric block 17 with pin 15 by pad 16, Needle bearing 18 suits that diameter is a bit larger tham eccentric block 17 thereon, then, the connecting rod 19 that diameter is a bit larger tham Needle bearing 18 is set on pad 16, eccentric block 17 and the Needle bearing 18 again.In order to link the motion of eccentric group and connection rod set, so connecting rod 19 is made up of two wheel rims up and down.In addition, fixedly rocking bar 25 has three holes, one stomidium is fixing with first connecting pin 71 with the last hole of second connecting rod 32, and middle hole uses second connecting pin 72 that the following wheel rim of connecting rod 19 is fixed thereon, and another stomidium also uses bolting on the body of Sewing machines 1.When drive system 10 activated, fixedly rocking bar 25 can move up and down along with the drive of eccentric group 14, and then drivening rod group 30 is mobile.
The cutting knife mobile device mainly comprises a carriage release lever 58 and a cutting knife 60.At first, the first fixing wherein following hole of a protruding axle insertion first connecting rod 31 of slide block 52 that will have two protruding axles, to connect drive unit 10 and cutting knife mobile device 50, then carriage release lever 58 is penetrated second copper sheathing 56 on the body that is fixed in Sewing machines 1, and with the first fixing middle vacancy of the protruding axle of another of slide block 52 insertion carriage release lever 58, then, the other end with screw thread of carriage release lever 58 injects second fixedly in the hole of slide block 54 and with fixed by nut, at last, in regular turn cutting knife 60, tool rest 62 and tool rest contiguous block 63 are fixed in second fixedly on the slide block 54.
As Fig. 4 and Fig. 6, when Sewing machines 1 when cutting cloth automatically, at first the center cross bar 41 with knob 42 places horizontal level, four connecting rods of connection rod set 30 all are in the position perpendicular to knob center cross bar 41 at this moment, then drive the motor of Sewing machines 1, the belt pulley 2 of motor is rotationally connected, driving driving shaft 12 simultaneously rotates, further drive the eccentric group 14 that is connected in driving shaft 12, the fixedly rocking bar 25 of eccentric group 14 belows and be fixed in the fixedly connection rod set 30 of rocking bar 25, further drive the carriage release lever 58 of the cutting knife mobile device 50 of the first connecting rod 31 that is connected in connection rod set 30 again, so that cutting knife 60 can pump, four connecting rods of the connection rod set 30 of this moment then are parallel to cutting knife mobile device 50 and pump, when showing that as Fig. 6 carrying out this cuts the cloth action automatically, cutting knife is positioned at upper dead center position, the topmost position that makes progress that promptly cutting knife pumps.
Otherwise, as Fig. 5 and Fig. 7, when Sewing machines 1 carries out the single needle sewing and need not use cutting knife mobile device 50, the center cross bar 41 of rotatable knob 42 is in the upright position, this moment connection rod set 30 four connecting rods angle that can tilt, and the carriage release lever 58 of cutting knife mobile device 50 is upwards risen, and then drive cutting knife 60 rises and be fixed on ad-hoc location.Therefore, when driving the motor of Sewing machines 1, the belt pulley 2 of motor is rotationally connected, driving shaft 12 is rotated, further drive the fixedly rocking bar 25 of the eccentric group 14 that is connected in driving shaft 12, eccentric group 14 belows and be fixed in this fixedly second connecting rod 32 of the connection rod set 30 of rocking bar 25, can tilt angles and left and right sides reciprocally swinging of connection rod set 30 then, though this moment cutting knife 60 not with move and can't carry out Qie Bu, Sewing machines still can carry out the single needle sewing.
The present invention can make various specific illustrations under the spirit of not leaving this creation and essential characteristic.Scope of the present invention with claims and in conjunction with specification and accompanying drawing the person of being defined be as the criterion, and limited by above-mentioned explanation, all variations that equate with the claim meaning all should be contained in the protection domain of this patent.
Claims (1)
1, a kind of automatic cloth-cutting apparatus of Sewing machines comprises:
One drive unit, it mainly comprises a driving shaft, an eccentric group, connection rod set, a fixing rocking bar;
One end of this driving shaft is connected to the belt pulley of Sewing machines, and in order to drive the action of whole Sewing machines, the other end then is connected to eccentric group;
This eccentric group is by pad and eccentric block with the pin fixed combination together, and the cover connecting rod of loading onto Needle bearing and hollow forms in regular turn again, and connecting rod by about two wheel rims formed;
Fixedly rocking bar has three holes, and a stomidium engages with first connecting pin with the last hole of the second connecting rod of connection rod set, and middle hole uses second connecting pin to engage with the following wheel rim of connecting rod, and another stomidium then is fixed on the body of Sewing machines;
This connection rod set mainly is made up of four connecting rods, the following hole of first connecting rod is connected to first fixedly on the protruding axle of slide block of cutting knife mobile device, last hole is connected with the following hole of second connecting rod and last Kong Yidi three connecting pins of third connecting rod, and last Kong Yidi four connecting pins of following Kong Zeyu the 4th connecting rod of third connecting rod connect;
One cutting knife mobile device, it mainly comprises a cutting knife and a carriage release lever, this first fixedly the protruding axle of another of slide block insert in the end of carriage release lever of hollow, and carriage release lever passed second copper sheathing on the body that is fixed in Sewing machines, the other end that then carriage release lever is had a screw thread inserts the second fixing slide block and with fixed by nut, in regular turn cutting knife, tool rest and tool rest contiguous block are fixed to second at last fixedly on the slide block, operate so that cutting knife can drive with the motor of Sewing machines; And
One control device, it mainly comprises a knob, this knob is to be fixed in the 3rd fixedly on the slide block of hollow with screw, and the 3rd fixedly the middle vacancy of slide block install a hollow first copper sheathing, can insert vacancy in this first copper sheathing so that be connected to the turning cylinder in hole under the 4th connecting rod, and be fixed in the 3rd fixedly on slide block and the knob;
When cutting cloth, at first the center cross bar with knob places horizontal level, four connecting rods of connection rod set all are in the position perpendicular to knob center cross bar at this moment, then drive the motor of Sewing machines, the be rotationally connected belt pulley of motor, and then drive driving shaft and eccentric group is rotated, and make fixing rocking bar swing an angle and the moving up and down of drivening rod group, drive carriage release lever at last again and cutting knife can be pumped, and then reach the function of cutting cloth automatically; When not cutting cloth, the center cross bar of knob is placed stand up position, the turning cylinder of this timed unit can rotate an angle, and cutting knife promotes and is fixed on the ad-hoc location because of being connected in connection rod set on the turning cylinder angle that tilts, cutting knife can not pumped because of the motor that drives Sewing machines, but when motor that drives Sewing machines and rotating pulley, still can make drive shaft turns simultaneously, further drive the eccentric group that is connected in driving shaft, the described fixedly rocking bar of eccentric group below and be fixed in the second connecting rod of the connection rod set of described fixedly rocking bar, make connection rod set can tilt an angle and left and right sides reciprocally swinging, though cutting knife does not move and can't carry out Qie Bu at this moment, but still can carry out the single needle sewing thereupon.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB011346833A CN1309892C (en) | 2001-11-12 | 2001-11-12 | Automatic cutting device for sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB011346833A CN1309892C (en) | 2001-11-12 | 2001-11-12 | Automatic cutting device for sewing machine |
Publications (2)
Publication Number | Publication Date |
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CN1418999A CN1418999A (en) | 2003-05-21 |
CN1309892C true CN1309892C (en) | 2007-04-11 |
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ID=4672667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CNB011346833A Expired - Fee Related CN1309892C (en) | 2001-11-12 | 2001-11-12 | Automatic cutting device for sewing machine |
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CN (1) | CN1309892C (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3970832B2 (en) * | 2003-10-17 | 2007-09-05 | 森 勝司 | Cloth cutting machine |
CN101067263B (en) * | 2007-06-08 | 2011-04-27 | 龚培云 | Digital control sewing machine rotary cutter device |
CN101525819B (en) * | 2009-04-10 | 2012-11-14 | 新杰克缝纫机股份有限公司 | Clearance adjustable double-cutter structure applied to placket machine |
CN102168349B (en) * | 2010-02-25 | 2012-08-08 | 高林股份有限公司 | Flat-seam sewing machine and selvage-cutting transmission device thereof |
CN104562466A (en) * | 2015-01-07 | 2015-04-29 | 曹卫明 | Edge cutting, edge binding and sewing three-in-one sewing machine |
CN105155143A (en) * | 2015-07-29 | 2015-12-16 | 苏州市众禾缝纫科技有限公司 | Intelligent cloth-cutting device of sewing machine and control method |
CN108049037B (en) * | 2018-02-01 | 2023-08-29 | 温岭市慧华智能装备有限公司 | Automatic fixed-length cloth cutting sewing machine for mattress bag Bian Quan |
CN110106641A (en) * | 2019-05-29 | 2019-08-09 | 深圳市天昊科技有限公司 | A kind of sewing cutter device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3074363A (en) * | 1960-04-04 | 1963-01-22 | Pfaff Ag G M | Cutting knife control mechanism for sewing machines and the like |
US4773342A (en) * | 1987-04-30 | 1988-09-27 | Rockwell-Rimoldi S.P.A. | Control device for trimming knives in flat-bed sewing machines |
JPH04105690A (en) * | 1990-08-25 | 1992-04-07 | Singer Nikko Kk | Cloth end-cutting device for sewing-machine |
CN1070700A (en) * | 1991-07-15 | 1993-04-07 | 株式会社铃木制作所 | The knife drive mechanism of Sewing machines |
JPH09285674A (en) * | 1996-04-24 | 1997-11-04 | Brother Ind Ltd | Knife drive mechanism for sewing machine |
-
2001
- 2001-11-12 CN CNB011346833A patent/CN1309892C/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3074363A (en) * | 1960-04-04 | 1963-01-22 | Pfaff Ag G M | Cutting knife control mechanism for sewing machines and the like |
US4773342A (en) * | 1987-04-30 | 1988-09-27 | Rockwell-Rimoldi S.P.A. | Control device for trimming knives in flat-bed sewing machines |
JPH04105690A (en) * | 1990-08-25 | 1992-04-07 | Singer Nikko Kk | Cloth end-cutting device for sewing-machine |
CN1070700A (en) * | 1991-07-15 | 1993-04-07 | 株式会社铃木制作所 | The knife drive mechanism of Sewing machines |
JPH09285674A (en) * | 1996-04-24 | 1997-11-04 | Brother Ind Ltd | Knife drive mechanism for sewing machine |
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CN1418999A (en) | 2003-05-21 |
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Granted publication date: 20070411 Termination date: 20121112 |