CN104278444A - Yarn bonding mechanism for sewing machine - Google Patents
Yarn bonding mechanism for sewing machine Download PDFInfo
- Publication number
- CN104278444A CN104278444A CN201310574905.5A CN201310574905A CN104278444A CN 104278444 A CN104278444 A CN 104278444A CN 201310574905 A CN201310574905 A CN 201310574905A CN 104278444 A CN104278444 A CN 104278444A
- Authority
- CN
- China
- Prior art keywords
- yarn
- routing
- rod
- sewing machines
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
- D05B69/06—Pedal drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a yarn bonding mechanism for a sewing machine. The yarn bonding mechanism comprises a first yarn trapper arranged on a sewing machine shell, wherein the first yarn trapper is provided with a control rod which extends downwards, and the yarn bonding mechanism further comprises an electromagnet, a starting lever, a yarn-loosening connecting rod, a yarn-loosening shaft and a yarn bonding rod; an output shaft of the electromagnet is hinged to the starting lever; the upper end of the starting lever is rotationally arranged on the sewing machine shell through a pin shaft; one end of the yarn-loosening connecting rod is hinged to the starting lever; the other end of the yarn-loosening connecting rod is hinged to a rocking bar; the rocking bar is fixedly connected to the yarn-loosening shaft; a yarn-loosening carrier rod is fixedly arranged on the yarn-loosening shaft; the top end of the yarn-loosening carrier rod is provided with a bevel plane; the bevel plane is in contact with a control rod o the first yarn trapper; the yarn-loosening shaft is further connected with the yarn bonding rod. The mechanism is driven through the electromagnet, is simple in structure and low in failure rate, is convenient to maintain, and is easy to assemble.
Description
Technical field
The present invention relates to the technical field of Sewing machines, particularly relate to a kind of type throwing mechanism of Sewing machines.
Background technology
Sewing machines has irreplaceable effect in life, along with the development of science and technology, Sewing machines also in continuous progress to reach better result of use.
Routing bar is directly fixed on thread tension releasing lever rod by traditional sewing machine throwing mechanism, routing bar be steel wire, because rigidity is bad in bonding process, steel wire vibrations can make upper thread relax, and suture needle place stays line oversize, and it is long that trimming rear wires remains the end of a thread, during withdrawal of needle, upper thread is received not tight, affect stitching, and the driving of its thread tension releasing lever is driven by linkage transmission by workman's foot-on pedal, the labour intensity of workman is large.
Chinese invention patent CN 202047244U discloses a kind of cam type throwing mechanism of flat seaming machine, comprise throwing cam line crossing bracket and wheel face being shaped with annular groove, camshaft is connected by Timing Belt with upper axle by synchronous pulley, the inner side of Flat Seaming Machine Head column is shaped with pit, camshaft stretches out pit in column, and throwing cam is placed on camshaft external part admittedly; Line crossing bracket bearing pin through line crossing bracket axle sleeve is parallel with camshaft and be fixed on pit, rightly crosses line plate, leftly crosses the top that line plate is loaded on line crossing bracket, and cross line sheet and to be loaded in the draw-in groove of line crossing bracket and to snap onto in the annular groove of throwing cam, torsion spring is equipped with on the right side of line crossing bracket; In column, pit is stretched out for the flexible gag lever post spacing to line crossing bracket.Although this patent disclose a kind of type throwing mechanism, but some technical problems of above-mentioned conventional sewing machine can not be solved, and this structure of this patent is not easily assembled, and fault rate is high, thus need that a kind of structure is simple, failure rate is low, the sewing machine throwing mechanism that easy to adjust, routing is stable.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of suture needle place of effective control Sewing machines to stay line length, reduce the electric drive Sewing machines of fault rate, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of type throwing mechanism of Sewing machines, comprise the first tension disk be arranged on sewing machine case, first tension disk is provided with a control lever to downward-extension, also comprise electromagnet, starting handle, loose ends connecting rod, thread tension releasing lever rod and routing bar, output shaft and the starting handle of wherein said electromagnet are hinged, the upper end of described starting handle is installed in rotation on sewing machine case by a bearing pin, one end of loose ends connecting rod is also hinged with starting handle, the other end and a rocking bar of loose ends connecting rod are hinged, rocking bar is fixedly connected on thread tension releasing lever rod, thread tension releasing lever rod is also fixed with a loose ends push rod, the top of loose ends push rod is provided with inclined-plane, the control lever of described inclined-plane and the first tension disk contacts, thread tension releasing lever rod is also connected with routing bar.
Preferably, connector, connecting pin a, jointing, connecting pin b and oscillating bearing is connected with successively between described output shaft and starting handle, be between output shaft and connector, between connector and connecting pin a, between connecting pin a and jointing and be fixedly connected with, jointing and connecting pin b are hinged, and connecting pin b and oscillating bearing are threaded.
Further, described oscillating bearing is the universal bearing matched by bulb and ball-and-socket.
Further, the output shaft of described electromagnet is also provided with crash roll.
Further, described thread tension releasing lever rod is fixedly connected with a routing crank, described routing bar is arranged on sewing machine case by a rotating shaft, and described routing crank is flexibly connected with described routing bar.
Further, described routing crank is provided with a chute, and a sliding pin fixed by described routing bar, and described chute matches with sliding pin.
Further, described routing bar has been connected by screw an adjustable plate, and described adjustable plate is provided with elongated hole and matches with described screw, and described sliding pin is arranged on adjustable plate.
Further, described loose ends connecting rod is also provided with a magnet, the position relative with magnet is also provided with a hard-wired sensor.
As mentioned above, the type throwing mechanism of Sewing machines of the present invention, has following beneficial effect:
Mechanism is by solenoid actuated, and structure is simple, failure rate is low, easy to maintenance, assembling is simple, controls Sewing machines startup, routing, end, effectively prevent the problem that suture needle place suture is long by left and right pedal; Mechanism is provided with crash roll and oscillating bearing simultaneously, and crash roll effectively reduces noise, and oscillating bearing reduces the difficulty of processing of part.
Accompanying drawing explanation
Fig. 1 is assembly drawing of the present invention.
Fig. 2 is principle of the invention figure.
Fig. 3 is the working state schematic representation of the present invention on Sewing machines.
Fig. 4 is the first type of drive schematic diagram of routing bar of the present invention.
Fig. 5 is the second type of drive schematic diagram of routing bar of the present invention.
Fig. 6 is the third type of drive schematic diagram of routing bar of the present invention.
Detailed description of the invention
The structure that Figure of description illustrates, ratio, size etc., content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, is not affecting under effect that the present invention can produce and the object that can reach, and all should still drop in scope that disclosed technology contents can contain.Simultaneously, quote in this description as " on ", D score, "front", "rear", the term such as " centre ", also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Sewing machines mainly comprises head 11, support 12, head 11 is arranged on the platen 13 of support 12, the type throwing mechanism of the Sewing machines of the present invention as shown in Fig. 1 to Fig. 3, comprise be arranged on head 1 casing on the first tension disk 3, first tension disk 3 is provided with a control lever 31 to downward-extension, described type throwing mechanism also comprises electromagnet 21, starting handle 23, loose ends connecting rod 24, thread tension releasing lever rod 26 and routing bar 27, output shaft 22 and the starting handle 23 of wherein said electromagnet 21 are hinged, the upper end of described starting handle 23 is installed in rotation on sewing machine case by a bearing pin, one end of loose ends connecting rod 24 is also hinged with starting handle 23, the other end and a rocking bar 25 of loose ends connecting rod 24 are hinged, rocking bar 25 is fixedly connected on thread tension releasing lever rod 26, thread tension releasing lever rod 26 is also fixed with a loose ends push rod 28, the top of loose ends push rod 28 is provided with inclined-plane 281, the control lever 31 of described inclined-plane 281 and the first tension disk 3 contacts, thread tension releasing lever rod 26 is also connected with routing bar 27.
Because Sewing machines operationally can with Vibration Condition and when mounted because have error unavoidably between each parts of impact of precision, bad vibration and alignment error can make mechanism operationally occur the situations such as bite, so in order to avoid the generation of the situations such as bite, connector 41 is connected with successively between described output shaft 22 and starting handle 23, connecting pin a42, jointing 43, connecting pin b44 and oscillating bearing 45, between output shaft 22 and connector 41, between connector 41 and connecting pin a42, be between connecting pin a42 and jointing 43 and be fixedly connected with, jointing 43 and connecting pin b44 are hinged, connecting pin b44 and oscillating bearing 45 are for being threaded.Further, described oscillating bearing 45 is the universal bearings matched by bulb 451 and ball-and-socket 452, and universal bearing further improves the flexibility of mechanism; The output shaft 22 of electromagnet 21 is also provided with crash roll 221.Therefore, had the connection of more above-mentioned activities and the alleviation structure of vibration, mechanism is just difficult to occur the phenomenons such as bite in the running, greatly reduces fault rate.
The position of above-mentioned loose ends connecting rod 24 on rocking bar 25 can affect the routing direction of routing bar 27, in real work, as shown in Figure 3, routing bar 27 is arranged on the second tension disk 14 and crosses between terminal 15, so routing bar 27 just must can play due effect by routing to the right, therefore will analyze from two kinds of situations, the first situation is the top that loose ends connecting rod 24 is hinged on rocking bar 25, and the second situation is the bottom that loose ends connecting rod 24 is hinged on rocking bar 25.
In a first scenario: composition graphs 2 and Fig. 4, when loose ends connecting rod 24 travels forward, rocking bar 25 drives thread tension releasing lever rod 26 to rotate counterclockwise, now routing bar 27 will rotate clockwise guarantee routing to the right, this situation has numerous embodiments, in the present embodiment, the type of drive of preferred a kind of routing bar 27 as shown in Figure 4 completes routing, namely described thread tension releasing lever rod 26 is fixedly connected with a routing crank 51, described routing bar 27 is arranged on sewing machine case by a rotating shaft, and described routing crank 51 is flexibly connected with described routing bar 27.Further, described routing crank 51 is provided with a chute 511, described routing bar 27 is fixed a sliding pin 271, and described chute 511 matches with sliding pin 271.In order to control the movement angle of routing bar 27, described routing bar 27 has been connected by screw an adjustable plate 52, described adjustable plate 52 is provided with elongated hole 521 and matches with described screw, and described sliding pin 271 is arranged on adjustable plate 52.When actual installation, because screw can slide in elongated hole 521, so moved right by adjustable plate 52, when sliding pin 271 is on the right side of chute 511, the movement angle of routing bar 27 just diminishes, and routing amount also diminishes; Be moved to the left by adjustable plate 52, when sliding pin 271 is on the left of chute 511, the movement angle of routing bar 27 just becomes large, and routing amount also just becomes large, and concrete movement angle is determined to regulate according to actual conditions.
In addition, the implementation method also having other of routing bar 27, the type of drive of the second routing bar 27 of such as the first situation as shown in Figure 5, thread tension releasing lever rod 26 is installed a gear 81, routing bar 27 is installed a gear 82, gear 81 and gear 82 are meshed, when thread tension releasing lever rod 26 driven gear 81 rotates counterclockwise, gear 82 can rotate clockwise, and this structure also achieves the routing to the right of routing bar 27.
In the latter case: the third type of drive of routing bar 27 as shown in Figure 6, when loose ends connecting rod 24 travels forward, rocking bar 25 drives thread tension releasing lever rod 26 to rotate clockwise, now only need thread tension releasing lever 27 to be fixed on the routing to the right that thread tension releasing lever rod 26 can realize thread tension releasing lever 27, do not need other structures.
The first tension disk described in the present invention is relative clamping with the clamping of the second tension disk to suture 7, and namely during clamping, suture 7 still can move on the first tension disk and the second tension disk.When using the Sewing machines with this device, schematic diagram as shown in Figure 2, open the power supply of Sewing machines, step on right side footrest backward, electromagnet 21 pushes away forward, step on left side pedal again, presser feet on head 11 lifts, sewing is placed on below suture needle and prepares sewing, now because electromagnet 21 is pushed ahead, by output shaft 22, starting handle 23 is rotated clockwise, the rotation of starting handle 23 makes loose ends connecting rod 24 push ahead, rocking bar 25 drives thread tension releasing lever rod 26 to do counterclockwise movement, loose ends push rod 28 rotates counterclockwise, because the effect of inclined-plane 281 and control lever 31, first tension disk 3 is unclamped suture 7 by jack-up, routing crank 51 rotates counterclockwise, routing bar 27 rotates clockwise, the top routing of routing bar 27, composition graphs 1, Fig. 3, suture 7 on the second tension disk 14 and all being pulled to the right through the suture 7 of the first tension disk 3, achieving suture needle place the end of a thread to pull back avoids outside suture 7 long, and leaves some suture surpluses between the second tension disk 14 and the first tension disk 3, and broken string is avoided in the leeway having left buffering to sewing next time.Meanwhile, mechanism is also provided with a magnet 61 on described loose ends connecting rod 24, the position relative with magnet 61 is also provided with a hard-wired sensor 62, because above-mentioned action loose ends connecting rod 24 can be pushed ahead, magnet 61 and sensor 62 are misplaced, after dislocation, sensor 62 is responded to less than the signal on magnet 61, so Sewing machines can not start duty.
After routing work completes and sewing places, step on right side footrest forward again, electromagnet 21 bounces back and drives sleeve mechanism to reset, now sensor 62 is relative with magnet 61, sense signal, first tension disk 3 clamps, second tension disk 14 unclamps, step on right side footrest forward further, Sewing machines is started working, first left side stitching is made, now the first tension disk 3 and the second tension disk 14 are clamped condition, when being sewn into first noose position, the second tension disk 14 unclamps, first tension disk 3 clamps, stitching on the right side of sewing again after first noose terminates, now the first tension disk 3 and the second tension disk 14 are in clamped condition again, unclamp to the second tension disk 14 during the second noose, first tension disk 3 clamps, so far to sew end, electromagnet 21 automatically pushes away forward and again drives sleeve mechanism, first tension disk 3, second tension disk 14 all unclamps suture, routing bar 27 routing, step on left side pedal, take out sewing.
In sum, apparatus of the present invention, can solve the problem that sewing machine throwing mechanism is complicated, fault rate is high.So the present invention effectively overcomes practical problems more of the prior art thus has very high promotional value and use meaning in sewing machine technique.
Above-mentioned embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.The present invention also many aspects can also improve under the prerequisite of overall thought, all without prejudice under spirit of the present invention and category, can modify above-described embodiment or change for person skilled in the art scholar.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (8)
1. the type throwing mechanism of a Sewing machines, comprise the first tension disk (3) be arranged on sewing machine case, first tension disk (3) is provided with a control lever to downward-extension (31), it is characterized in that: also comprise electromagnet (21), starting handle (23), loose ends connecting rod (24), thread tension releasing lever rod (26) and routing bar (27), output shaft (22) and the starting handle (23) of wherein said electromagnet (21) are hinged, the upper end of described starting handle (23) is installed in rotation on sewing machine case by a bearing pin, one end of loose ends connecting rod (24) is also hinged with starting handle (23), the other end and a rocking bar (25) of loose ends connecting rod (24) are hinged, rocking bar (25) is fixedly connected on thread tension releasing lever rod (26), thread tension releasing lever rod (26) is also fixed with a loose ends push rod (28), the top of loose ends push rod (28) is provided with inclined-plane (281), the control lever (31) of described inclined-plane (281) and the first tension disk (3) contacts, thread tension releasing lever rod (26) is also connected with routing bar (27).
2. the type throwing mechanism of Sewing machines according to claim 1, it is characterized in that: between described output shaft (22) and starting handle (23), be connected with connector (41) successively, connecting pin a(42), jointing (43), connecting pin b(44) and oscillating bearing (45), between output shaft (22) and connector (41), connector (41) and connecting pin a(42) between, connecting pin a(42) and jointing (43) between be and be fixedly connected with, jointing (43) and connecting pin b(44) for hinged, connecting pin b(44) and oscillating bearing (45) be threaded.
3. the type throwing mechanism of Sewing machines according to claim 2, is characterized in that: described oscillating bearing (45) is the universal bearing matched by bulb (451) and ball-and-socket (452).
4. the type throwing mechanism of Sewing machines according to claim 1, is characterized in that: the output shaft (22) of described electromagnet (21) is also provided with crash roll (221).
5. the type throwing mechanism of Sewing machines according to claim 1, it is characterized in that: described thread tension releasing lever rod (26) is fixedly connected with a routing crank (51), described routing bar (27) is arranged on sewing machine case by a rotating shaft, and described routing crank (51) is flexibly connected with described routing bar (27).
6. the type throwing mechanism of Sewing machines according to claim 5, it is characterized in that: described routing crank (51) is provided with a chute (511), described routing bar (27) fixes a sliding pin (271), and described chute (511) matches with sliding pin (271).
7. the type throwing mechanism of Sewing machines according to claim 6, it is characterized in that: described routing bar (27) has been connected by screw an adjustable plate (52), described adjustable plate (52) is provided with elongated hole (521) and matches with described screw, and described sliding pin (271) is arranged on adjustable plate (52).
8. the type throwing mechanism of Sewing machines according to claim 1, is characterized in that: described loose ends connecting rod (24) is also provided with a magnet (61), the position relative with magnet (61) is also provided with a hard-wired sensor (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574905.5A CN104278444B (en) | 2013-07-10 | 2013-11-15 | The type throwing mechanism of sewing machine |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102906247 | 2013-07-10 | ||
| CN201310290624.7 | 2013-07-10 | ||
| CN201310290624 | 2013-07-10 | ||
| CN201310574905.5A CN104278444B (en) | 2013-07-10 | 2013-11-15 | The type throwing mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104278444A true CN104278444A (en) | 2015-01-14 |
| CN104278444B CN104278444B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310574905.5A Active CN104278444B (en) | 2013-07-10 | 2013-11-15 | The type throwing mechanism of sewing machine |
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| CN (1) | CN104278444B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894766A (en) * | 2015-06-05 | 2015-09-09 | 拓卡奔马机电科技有限公司 | Self-locking device of sewing machine |
| CN107938191A (en) * | 2017-12-22 | 2018-04-20 | 浙江中捷缝纫科技有限公司 | A kind of sewing machine crosses line mechanism |
| CN108625053A (en) * | 2018-08-20 | 2018-10-09 | 浙江美机缝纫机有限公司 | A kind of loose ends type throwing mechanism and the sewing machine with the loose ends type throwing mechanism |
| CN111041717A (en) * | 2019-12-27 | 2020-04-21 | 西安标准工业股份有限公司 | Control method of rear suction type bird-nest-free device |
Citations (6)
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|---|---|---|---|---|
| JPH04135596A (en) * | 1990-09-26 | 1992-05-11 | Brother Ind Ltd | Thread passing controllable sewing machine |
| JPH06134162A (en) * | 1992-10-28 | 1994-05-17 | Juki Corp | Upper thread supply controller for sewing machine |
| JPH07185169A (en) * | 1993-12-27 | 1995-07-25 | Juki Corp | Sewing machine needle thread supplying method and apparatus |
| JPH07313777A (en) * | 1994-05-26 | 1995-12-05 | Brother Ind Ltd | Sewing machine |
| JP2003326063A (en) * | 2002-05-14 | 2003-11-18 | Juki Corp | Needle thread clamping device for sewing machine |
| CN203602877U (en) * | 2013-07-10 | 2014-05-21 | 台州拓卡奔马机电科技有限公司 | Routing mechanism of sewing machine |
-
2013
- 2013-11-15 CN CN201310574905.5A patent/CN104278444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04135596A (en) * | 1990-09-26 | 1992-05-11 | Brother Ind Ltd | Thread passing controllable sewing machine |
| JPH06134162A (en) * | 1992-10-28 | 1994-05-17 | Juki Corp | Upper thread supply controller for sewing machine |
| JPH07185169A (en) * | 1993-12-27 | 1995-07-25 | Juki Corp | Sewing machine needle thread supplying method and apparatus |
| JPH07313777A (en) * | 1994-05-26 | 1995-12-05 | Brother Ind Ltd | Sewing machine |
| JP2003326063A (en) * | 2002-05-14 | 2003-11-18 | Juki Corp | Needle thread clamping device for sewing machine |
| CN203602877U (en) * | 2013-07-10 | 2014-05-21 | 台州拓卡奔马机电科技有限公司 | Routing mechanism of sewing machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894766A (en) * | 2015-06-05 | 2015-09-09 | 拓卡奔马机电科技有限公司 | Self-locking device of sewing machine |
| CN107938191A (en) * | 2017-12-22 | 2018-04-20 | 浙江中捷缝纫科技有限公司 | A kind of sewing machine crosses line mechanism |
| CN108625053A (en) * | 2018-08-20 | 2018-10-09 | 浙江美机缝纫机有限公司 | A kind of loose ends type throwing mechanism and the sewing machine with the loose ends type throwing mechanism |
| CN108625053B (en) * | 2018-08-20 | 2023-10-31 | 美机科技集团有限公司 | Loose thread wire bonding mechanism and sewing machine with same |
| CN111041717A (en) * | 2019-12-27 | 2020-04-21 | 西安标准工业股份有限公司 | Control method of rear suction type bird-nest-free device |
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| Publication number | Publication date |
|---|---|
| CN104278444B (en) | 2016-06-15 |
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