CN102900819B - Synchronous belt tensioning mechanism on sewing machine - Google Patents
Synchronous belt tensioning mechanism on sewing machine Download PDFInfo
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- CN102900819B CN102900819B CN201210407553.XA CN201210407553A CN102900819B CN 102900819 B CN102900819 B CN 102900819B CN 201210407553 A CN201210407553 A CN 201210407553A CN 102900819 B CN102900819 B CN 102900819B
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Abstract
The invention belongs to the technical field of sewing machines, and particularly relates to a synchronous belt tensioning mechanism on a sewing machine. The tensioning mechanism comprises a tension pulley arranged at one side of a synchronous belt, wherein the tension pulley is rotatably arranged on a tension pulley supporting shaft; the tension pulley supporting shaft is fixed to a crank, or the tension pulley supporting shaft and the crank are in an integral structure; the crank comprises a cross shaft rotatably mounted to a case; the shaft line of the tension pulley supporting shaft is parallel to the cross shaft on the crank; an adjusting fitting is fixedly connected to the end of the cross shaft extending out of the case; an adjusting drawbar is articulated to the adjusting fitting; an adjusting device is connected to the tail end of the adjusting drawbar; and the adjusting device can adjust the position of the adjusting drawbar to in turn adjust the position of the tension pulley. According to the invention, an adjusting nut is arranged on a side face of the case of the sewing machine, and when adjustment is needed, a screw fixed by the nut to a fixed plate is unscrewed, and the adjusting nut is unscrewed to move, and parts and fittings, such as an electric cabinet or a rear end cap, do not need to be disassembled and assembled, the synchronous belt is stable in transmission, a rotating shuttle is stable in thread hooking, and the synchronous belt tensioning mechanism is simple and convenient, and suitable to be used on all sewing machines.
Description
Technical field:
The invention belongs to sewing machine technique field, refer in particular to the Timing Belt tensioning mechanism on a kind of sewing machine.
Background technique:
Idle wheel is the tension device of V belt translation, when the centre distance be with can not regulate, Idle wheel can be adopted to be with tensioning.Timing Belt on sewing machine, after using the regular hour, Timing Belt there will be the phenomenon of pine.When Timing Belt crosses pine, the rotation of transmitting will be unstable, thus cause the nonsynchronous phenomenon of the rotational hysteresis of lower shaft of sewing machine, Timing Belt, when Timing Belt is unstable, rotating shuttle can be produced and hook line instability, thus there is bouncing pilotage, broken needle phenomenon, will all produce certain impact to the quality of product that the quality of sewing machine itself and client are produced like this.Because Timing Belt is sleeved between main shaft and lower shaft, the position between main shaft and lower shaft is fixing, then need to arrange Idle wheel in the side of Timing Belt and make Timing Belt bend in one direction thus re-tensioning work.Therefore, the mechanism arranging the degree of tightness of adjustment Timing Belt is very important.Because the slack and undisciplined degree of Timing Belt is different, need the tensioning state regulating the position of Idle wheel to reach best to make Timing Belt.At present, the adjustment portion of the Idle wheel controlling mechanism on sewing machine is provided with on the ear end face of sewing machine case.The ear end face of sewing machine case is all fixed with electric control box or rear end cover.Time each needs are readjusted, all need just can adjust after electric control box or rear end cover dismounting, need again after adjusting again electric control box or rear end cover to be reinstalled.The position dismounting trouble of each adjustment Idle wheel, complex procedures, length consuming time, it is very inconvenient to use.
Summary of the invention:
The object of this invention is to provide the Timing Belt tensioning mechanism on a kind of sewing machine that can adjust Idle wheel position, easy to adjust, compact structure from the side.
The present invention is achieved in that
Timing Belt tensioning mechanism on a kind of sewing machine, be arranged on the Idle wheel of Timing Belt side, Idle wheel can be rotatably set on Idle wheel supporting axle, Idle wheel supporting axle is fixed on crank or Idle wheel supporting axle and crank are integral type structure, crank includes the transverse axis be rotatably installed on casing, the axis of Idle wheel supporting axle is parallel with the transverse axis on crank, the one end of stretching out the transverse axis outside casing is fixed with adjustment accessory, regulate on accessory and be hinged with regulating tie bar, the tail end of regulating tie bar is connected with controlling device, the position of controlling device adjustable regulating tie bar and then the position of adjustment Idle wheel.
Above-mentioned Idle wheel can be rotatably set on Idle wheel supporting axle: on Idle wheel supporting axle, be installed with bearing, at bearing outside, Idle wheel be housed.
Above-mentioned adjustment accessory is hinged with regulating tie bar is: regulate the upper end of accessory to be fixed on the one end of the transverse axis stretched out outside casing, and lower end and the joint of adjustment accessory are hinged, and joint is fixed with regulating tie bar.
One end that the upper end of above-mentioned adjustment accessory is fixed on the transverse axis stretched out outside casing is: regulate the upper end of accessory to be provided with mounting hole, the upper end of accessory is regulated to be sleeved on transverse axis, relevant position and regulate in the mounting hole on accessory the plane cooperatively interacted being respectively arranged with and preventing from regulating accessory to rotate around transverse axis on transverse axis, transverse axis between inside casing and adjustment accessory is provided with back-up ring, transverse axis outside adjustment accessory is provided with nut, and back-up ring and nut are positioned at regulating the upper end of accessory on transverse axis.
Lower end and the joint of above-mentioned adjustment accessory are hinged: regulate the lower end of accessory to be provided with bar-shaped trough, described joint is U-joint, the opening end of joint is provided with axis being parallel in the pin shaft hole of transverse axis and tapped hole, pin shaft hole and tapped hole axis collinear, fixing pin is located in the bar-shaped trough of adjustment accessory, one end of fixing pin is arranged in pin shaft hole, threaded end is arranged in tapped hole, and the fixing pin between the side and joint of the adjustment accessory lower end near pin shaft hole is set with packing ring.
The concrete structure above-mentioned joint being fixed with regulating tie bar is: regulating tie bar is made up of head and bar portion, the closed end that head is arranged in the closed end of joint, joint is passed in bar portion, the tail end in bar portion is provided with outside thread, the bar portion be arranged on outside joint is provided with positioning ring near tab closure end place, and head is fixed in the closed end of joint by positioning ring.
Above-mentioned controlling device is: include and determine plate and one end is arranged on the adjusting nut determined in plate, and adjusting nut is arranged on the tail end determining one end in plate and regulating tie bar and is spirally connected, adjusting nut is fixed by screws in be determined on plate.
Above-mentioned plate of determining is fixed by screws on the side of casing.
The advantage that the present invention gives prominence to compared to existing technology is:
1, adjusting nut of the present invention is arranged on the side of sewing machine case, when Timing Belt is more loose, unscrews the screw being fixed on by nut and determining on plate, turn adjusting nut can obtain the tightness of synchronous belt required, toothed belt transmission is stablized, and rotating shuttle hooks line stabilization, thus improves the quality of product;
2, the present invention does not need the Component such as dismounting electric control box, and easy to use, consuming time short, operation is simple;
3, the present invention is applicable on all sewing machines.
Accompanying drawing illustrates:
Fig. 1 is that the present invention is arranged on one of schematic diagram of Timing Belt side;
Fig. 2 is the schematic diagram two that the present invention is arranged on Timing Belt side;
Fig. 3 is one of the present invention's schematic diagram of being arranged on sewing machine case;
Fig. 4 is the schematic diagram two that the present invention is arranged on sewing machine case.
Fig. 5 is exploded perspective view of the present invention.
Embodiment:
With specific embodiment, the invention will be further described below, see Fig. 1-5:
Timing Belt tensioning mechanism on a kind of sewing machine, be arranged on the Idle wheel 20 of Timing Belt 10 side, Idle wheel 20 can be rotatably set on Idle wheel supporting axle 30, Idle wheel supporting axle 30 is fixed on crank 40 or Idle wheel supporting axle 30 is integral type structure with crank 40, crank 40 includes the transverse axis 41 be rotatably installed on casing 50, the axis of Idle wheel supporting axle 30 is parallel with the transverse axis 41 on crank 40, the one end of stretching out the transverse axis 41 outside casing 50 is fixed with and regulates accessory 60, regulate on accessory 60 and be hinged with regulating tie bar 80, the tail end of regulating tie bar 80 is connected with controlling device, the position of controlling device adjustable regulating tie bar 80 and then the position of adjustment Idle wheel 20.
Above-mentioned Idle wheel 20 can be rotatably set on Idle wheel supporting axle 30: on Idle wheel supporting axle 30, be installed with bearing 110, is set with Idle wheel 20 outside bearing 110.When Idle wheel supporting axle 30 and crank 40 are split-type structural, Idle wheel supporting axle 30 is multidiameter shaft, the diameter at the middle part of Idle wheel supporting axle 30 is greater than the diameter at two ends, the path 301 of one end of Idle wheel supporting axle 30 is fixed on bent axle 40, bearing 110 is sleeved on the path 302 of the other end of Idle wheel supporting axle 30, is respectively arranged with jump ring 120 and pad 130, end face screw 140 by spacing for bearing 110 in the both sides of bearing 110 on Idle wheel supporting axle 30.
Above-mentioned adjustment accessory 60 is hinged with regulating tie bar 80 is: regulate the upper end of accessory 60 to be fixed on the one end of the transverse axis 41 stretched out outside casing 50, and lower end and the joint 70 of adjustment accessory 60 are hinged, joint 70 are fixed with regulating tie bar 80.
One end that the upper end of above-mentioned adjustment accessory 60 is fixed on the transverse axis 41 stretched out outside casing 50 is: regulate the upper end of accessory 60 to be provided with mounting hole 601, the upper end of accessory 60 is regulated to be sleeved on transverse axis 41, relevant position and regulate in the mounting hole 601 on accessory 60 plane 602 cooperatively interacted being respectively arranged with and preventing from regulating accessory 60 to rotate around transverse axis 41 on transverse axis 41, transverse axis 41 between inside casing 50 and adjustment accessory 60 is provided with back-up ring 150, transverse axis 41 outside adjustment accessory 60 is provided with nut 160, back-up ring 150 and nut 160 are positioned at regulating the upper end of accessory 60 on transverse axis 41.Transverse axis 41 rotates to drive and regulates accessory 60 1 to start.
Lower end and the joint 70 of above-mentioned adjustment accessory 60 are hinged: regulate the lower end of accessory 60 to be provided with bar-shaped trough 603, described joint 70 is U-joints, the opening end of joint 70 is provided with axis being parallel in the pin shaft hole 701 of transverse axis 41 and tapped hole 702, pin shaft hole 701 and tapped hole 702 axis collinear, fixing pin 170 is located in the bar-shaped trough 603 of adjustment accessory 60, one end of fixing pin 170 is arranged in pin shaft hole 701, threaded end is arranged in tapped hole 702, fixing pin 170 between the side and joint 70 of adjustment accessory 60 lower end near pin shaft hole 701 is set with packing ring 180.
The concrete structure above-mentioned joint 70 being fixed with regulating tie bar 80 is: regulating tie bar 80 is made up of head 801 and bar portion 802, the closed end 703 that head 801 is arranged in the closed end 703 of joint 70, joint 70 is passed in bar portion 802, the tail end in bar portion 802 is provided with outside thread, the bar portion 802 be arranged on outside joint 70 is provided with positioning ring 190 near tab closure end 703 place, positioning ring 190 is provided with screw and is fixed in the closed end 703 of joint 70 by head 801.
Above-mentioned controlling device is: include and determine plate 100 and one end is arranged on the adjusting nut 90 determined in plate 100, and adjusting nut 90 is arranged on the tail end determining one end in plate 100 and regulating tie bar 80 and is spirally connected, adjusting nut 90 is fixed on by screw 200 to be determined on plate 100.Concrete structure is: on a side of determining plate 100, be provided with axes normal in the tapped hole 1001 of adjusting nut 90 mounting hole, adjusting nut 90 mounting hole and tapped hole 1001 mutually through, screw 200 is screwed onto in tapped hole 1001 and screw 200 holds out against and fixed by adjusting nut 90 on the external cylindrical surface of adjusting nut 90.
Above-mentioned plate 100 of determining is fixed on the side of casing 50 by screw 210.As: on leading flank.
Using method of the present invention:
When needs regulate Idle wheel 20 position, unscrew the screw 200 of secured adjusted nut 90, rotate the front and back position that adjusting nut 90 adjusts regulating tie bar 80, by joint 70, regulating accessory 60 and fixing pin 170 to drive the transverse axis 41 on crank 40 to rotate the position of drive Idle wheel 20 to meeting the requirements of Timing Belt 10 degree of tightness, being fixed in by screw 200 after regulating and determining on plate 100.
Above-described embodiment is only one of preferred embodiment of the present invention, not limits practical range of the present invention with this, therefore: all equivalence changes done according to shape of the present invention, structure, principle, all should be covered by within protection scope of the present invention.
Claims (6)
1. the Timing Belt tensioning mechanism on a sewing machine, it is characterized in that: the Idle wheel being arranged on Timing Belt side, Idle wheel can be rotatably set on Idle wheel supporting axle, Idle wheel supporting axle is fixed on crank or Idle wheel supporting axle and crank are integral type structure, crank includes the transverse axis be rotatably installed on casing, the axis of Idle wheel supporting axle is parallel with the transverse axis on crank, the one end of stretching out the transverse axis outside casing is fixed with adjustment accessory, regulate on accessory and be hinged with regulating tie bar, wherein, adjustment accessory is hinged with regulating tie bar be specially: regulate the upper end of accessory to be fixed on the one end of the transverse axis stretched out outside casing, lower end and the joint of adjustment accessory are hinged, joint is fixed with regulating tie bar, concrete structure joint being fixed with regulating tie bar is: regulating tie bar is made up of head and bar portion, the closed end that head is arranged in the closed end of joint, joint is passed in bar portion, the tail end in bar portion is provided with outside thread, the bar portion be arranged on outside joint is provided with positioning ring near tab closure end place, and head is fixed in the closed end of joint by positioning ring, the tail end of regulating tie bar is connected with controlling device, the position of controlling device adjustable regulating tie bar and then the position of adjustment Idle wheel.
2. the Timing Belt tensioning mechanism on a kind of sewing machine according to claim 1, is characterized in that: described Idle wheel can be rotatably set on Idle wheel supporting axle and is: on Idle wheel supporting axle, be installed with bearing, at bearing outside, Idle wheel be housed.
3. the Timing Belt tensioning mechanism on a kind of sewing machine according to claim 1, it is characterized in that: one end that the upper end of described adjustment accessory is fixed on the transverse axis stretched out outside casing is: regulate the upper end of accessory to be provided with mounting hole, the upper end of accessory is regulated to be sleeved on transverse axis, relevant position and regulate in the mounting hole on accessory the plane cooperatively interacted being respectively arranged with and preventing from regulating accessory to rotate around transverse axis on transverse axis, transverse axis between inside casing and adjustment accessory is provided with back-up ring, transverse axis outside adjustment accessory is provided with nut, back-up ring and nut are positioned at regulating the upper end of accessory on transverse axis.
4. the Timing Belt tensioning mechanism on a kind of sewing machine according to claim 1, it is characterized in that: lower end and the joint of described adjustment accessory are hinged: regulate the lower end of accessory to be provided with bar-shaped trough, described joint is U-joint, the opening end of joint is provided with axis being parallel in the pin shaft hole of transverse axis and tapped hole, pin shaft hole and tapped hole axis collinear, fixing pin is located in the bar-shaped trough of adjustment accessory, one end of fixing pin is arranged in pin shaft hole, threaded end is arranged in tapped hole, fixing pin between the side and joint of the adjustment accessory lower end near pin shaft hole is set with packing ring.
5. the Timing Belt tensioning mechanism on a kind of sewing machine according to claim 1, it is characterized in that: described controlling device is: include and determine plate and one end is arranged on the adjusting nut determined in plate, adjusting nut is arranged on the tail end determining one end in plate and regulating tie bar to be spirally connected, adjusting nut is fixed by screws in be determined on plate.
6. the Timing Belt tensioning mechanism on a kind of sewing machine according to claim 5, is characterized in that: described plate of determining is fixed by screws on the side of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210407553.XA CN102900819B (en) | 2012-09-29 | 2012-10-23 | Synchronous belt tensioning mechanism on sewing machine |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103767533 | 2012-09-29 | ||
| CN201210376753 | 2012-09-29 | ||
| CN201210376753.3 | 2012-09-29 | ||
| CN201210407553.XA CN102900819B (en) | 2012-09-29 | 2012-10-23 | Synchronous belt tensioning mechanism on sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102900819A CN102900819A (en) | 2013-01-30 |
| CN102900819B true CN102900819B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210407553.XA Active CN102900819B (en) | 2012-09-29 | 2012-10-23 | Synchronous belt tensioning mechanism on sewing machine |
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| CN (1) | CN102900819B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325501B (en) * | 2014-09-01 | 2017-04-05 | 广东飞新达智能设备股份有限公司 | Die-cutting machine Timing Belt tightening regulator and its control method |
| CN109442012A (en) * | 2018-10-30 | 2019-03-08 | 德清县德盛纺织品有限公司 | Synchronous belt adjusting mechanism of cam opening device |
| CN109822559A (en) * | 2019-03-19 | 2019-05-31 | 华南理工大学 | A kind of Robot neck rotating device and control method based on Synchronous Transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240368A (en) * | 1980-03-17 | 1980-12-23 | The Singer Company | Motorized drive for a sewing machine including belt tensioning means |
| CN201670950U (en) * | 2010-05-27 | 2010-12-15 | 沈永平 | Tension device for belt of industrial sewing machine |
| CN201836315U (en) * | 2010-10-16 | 2011-05-18 | 常州亚美柯机械设备有限公司 | Adjusting device of belt tensioning pulley for diesel engine |
| CN202867735U (en) * | 2012-09-29 | 2013-04-10 | 台州拓卡奔马机电科技有限公司 | Synchronous belt tensioning mechanism on sewing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63283683A (en) * | 1987-05-15 | 1988-11-21 | アイシン精機株式会社 | Sewing machine having belt tension control apparatus |
-
2012
- 2012-10-23 CN CN201210407553.XA patent/CN102900819B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240368A (en) * | 1980-03-17 | 1980-12-23 | The Singer Company | Motorized drive for a sewing machine including belt tensioning means |
| CN201670950U (en) * | 2010-05-27 | 2010-12-15 | 沈永平 | Tension device for belt of industrial sewing machine |
| CN201836315U (en) * | 2010-10-16 | 2011-05-18 | 常州亚美柯机械设备有限公司 | Adjusting device of belt tensioning pulley for diesel engine |
| CN202867735U (en) * | 2012-09-29 | 2013-04-10 | 台州拓卡奔马机电科技有限公司 | Synchronous belt tensioning mechanism on sewing machine |
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| CN102900819A (en) | 2013-01-30 |
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Address after: 317000 No. 71 River Road, Jiangnan street, Linhai City, Zhejiang, 181 Applicant after: BULLMER ELECTROMECHANICAL TECHNOLOGY CO., LTD. Address before: 317000, Zhejiang, Taizhou Province Jiangnan Jiangnan Street office seed farm Applicant before: Taizhou Topcut Bullmer Mechanical and Electrical Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: TAIZHOU TOPCUT BULLMER MECHANICAL AND ELECTRICAL TECHNOLOGY CO., LTD. TO:TOPCUT-BULLMER MECHANICAL AND ELECTRICAL TECHNOLOGY CO., LTD. |
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