CN1746370A - Sewing machine and method for regulating drive force of its needle - Google Patents
Sewing machine and method for regulating drive force of its needle Download PDFInfo
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- CN1746370A CN1746370A CN 200510103626 CN200510103626A CN1746370A CN 1746370 A CN1746370 A CN 1746370A CN 200510103626 CN200510103626 CN 200510103626 CN 200510103626 A CN200510103626 A CN 200510103626A CN 1746370 A CN1746370 A CN 1746370A
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- belt pulley
- flywheel
- sewing machine
- eedle
- belt
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Abstract
The invention provides a sewing machine capable of quickly changing a penetration force of a needle and to provide its needle driving force adjusting method. A flywheel 34 is a flange-shaped rotating body having a diameter larger than that of a pulley 31. The flywheel 34 is detachably mounted on the end face 31b of the pulley 31 by three set screws 34a concentrically to the pulley 31. In sewing, when a material to be sewn is thick or hard, the sewing needle does not smoothly penetrate therethrough. The mounting of the flywheel 34 on the pulley 31 can increase the mass around an arm shaft 32, and improve an inertia moment around the arm shaft 32 driving the sewing needle to strengthen the penetration force of the sewing needle and suppress the effect of torque fluctuation. In especially, the flywheel 34 has the diameter larger than that of the pulley 31 to effectively improve the inertia moment and provide a stable penetration force to the sewing needle.
Description
Technical field
The present invention relates to the rotation of the belt pulley that a kind of basis is connected with drive source by belt, make the Sewing machines and the eedle driving force method of adjustment thereof of eedle knee-action.
Background technology
In the past, according to the rotation of the belt pulley that is connected with the drive source of motor etc. by belt, it was known making the main axis rotation of the Sewing machines that is fixed with belt pulley and making the formation of eedle knee-action.In such Sewing machines, owing to the penetration power difference of the eedle of needs in the Sewing machines of making respectively according to the cloth or the thickness of sewn object, so must adjust the penetration power of its eedle according to the kind of sewn object.Therefore, adopted the method that the belt pulley that varies in weight is changed.
Usually, along with the weight of belt pulley increases the weight of, rotary inertia when rotated increases, and the penetration power of eedle also increases thereupon, so be fit to make thick cloth, but, because the time started or the braking time of drive actions are elongated, perhaps power consumption strengthens, therefore, when making grenadine or paying the utmost attention to high speed, to alleviate the weight of belt pulley usually and use.
And, with the trickle part of this stitching sewing machine the time, consider the problem of servo-actuated, not by power supply but with the power that manually provides the driving machine needle drive mechanism.At this moment, by manual operation rotation belt pulley, can correctly carry out required making at leisure.Therefore, can be delivered to main shaft (lever principle) to the big more then big more torque of external diameter that likens to this belt pulley of manual operation unit, thus the penetration power of eedle is increased, and, when making thick cloth, can obtain good operability.
And the flywheel portion (flywheel) that has both manual operation unit is configured in an end of belt pulley and forms as one with belt pulley is well-known (for example, with reference to patent documentation 1: TOHKEMY 2000-225282 communique).Such structure is bigger than the diameter of belt pulley with the incorporate flywheel of belt pulley.
But, in the Sewing machines before shown in above-mentioned patent documentation 1, for safety, be arranged on the sewing machine frame outside as rotary body belt pulley and hang over the belt that is used on the belt pulley transmitting from the torque of drive source, use with the state that covers with cover.Therefore, when changing flywheel, must change and the integrally formed whole belt pulley of this flywheel according to the change of sewn object.Necessary cover removal further will be dismantled belt when changing belt pulley, so operation is miscellaneous, simultaneously the operation cost time, all can not directly carry out the replacing of flywheel in any case.Therefore, when the operation of the penetration power that changes eedle, take time and energy very much.
And, when the external diameter of flywheel becomes external diameter than belt pulley when big, adopt the shape that changes cover in order when covering, to improve seal with cover or for loading and unloading are easily covered cover is divided into about two, thereby the method that centers on from the left and right sides.Therefore, can not use existing cover, produce the problem that improves manufacturing cost.
And, usually, belt suitably is set up in outer setting at sewing machine frame in the belt pulley on the main shaft with between being arranged at as the belt pulley on the motor of sewing machine of drive source, its length does not have sufficient surplus, therefore, when the footpath of flywheel became big, it is difficult that the dismounting of belt becomes.
Summary of the invention
The object of the present invention is to provide a kind of Sewing machines and eedle driving force method of adjustment thereof that can change the penetration power of eedle apace.
In order to solve above-mentioned problem, the present invention's 1 Sewing machines, comprise: eedle, drive the needle drive of described eedle up and down, an end is outstanding outside sewing machine frame also rotatably to be supported on the sewing machine frame and the main shaft that is connected with described needle drive with making, with on the jag that is fixed on described main shaft and by the belt pulley of belt to the power of described main shaft supply drive source, cover with the radiation direction of being arranged to cover at least belt pulley is characterized in that: be provided with and have than the big external diameter of described belt pulley and releasably be configured in the flywheel in the outside of the axis direction of described belt pulley.
The present invention 1 in, when changing the penetration power of eedle along with changing sewn object, with belt pulley dividually, the flywheel that releasably is provided with only is in this flywheel rapidly and the state of the flywheel replacing of easily different with weight or external diameter etc. other.Therefore, do not need to dismantle beyond the flywheel with the connected parts of Sewing machines (for example, sewing machine frame, belt pulley, belt etc.).
The present invention's 21 described Sewing machiness according to the present invention is characterized in that described flywheel releasably is fixed on the described belt pulley by hold-down screw.
The present invention 2 in, belt pulley and flywheel are releasably fixing by hold-down screw.Therefore, when the penetration power of change eedle, just the replacing of the different flywheel of weight or external diameter be can easily carry out, new flywheel and belt pulley just releasably fixed by hold-down screw once more by knockout screw.
The eedle driving force method of adjustment of the present invention's 3 Sewing machines, described Sewing machines comprises: eedle, drive the needle drive of described eedle up and down, an end is outstanding outside sewing machine frame also rotatably to be supported on the sewing machine frame and the main shaft that is connected with described needle drive with making, with on the jag that is fixed on described main shaft and by the belt pulley of belt to the power of described main shaft supply drive source, cover with the radiation direction of being arranged to cover at least belt pulley, it is characterized in that: be provided with and have than the big external diameter of described belt pulley and releasably be configured in the flywheel in the outside of the axis direction of described belt pulley, respectively a plurality of weight or the different flywheel of external diameter are installed selectively.
The present invention 3 in, the change of the penetration power of the eedle that causes along with the change of the thickness of sewn object or hardness is to separate in the different a plurality of flywheels of the flywheel that forms and releasably be fixed on this belt pulley and weight or external diameter any one by handle and belt pulley to change and realize.
(invention effect)
According to the present invention 1, flywheel is removable on the belt pulley, therefore, can only change this flywheel as individual components, in the time will changing the penetration power of eedle along with the replacing of sewn object, does not need to dismantle belt pulley, belt and cover.Therefore, can be rapidly and easily change the penetration power of eedle.In addition, do not need cover removal just can change flywheel, so even when using than the big flywheel of belt pulley external diameter, the cover that does not also need to have the structure that is divided into two, and, owing to can use integrally formed cover, so can use existing cover.Therefore, can suppress manufacturing cost significantly.
In addition, by flywheel and belt pulley branch are arranged, the belt pulley that does not need to dismantle flywheel one by one and set up belt when the loading and unloading belt housing can easily carry out the loading and unloading of belt housing.
In addition, when the dismounting belt, can dismantle belt from the Sewing machines outside to being in the belt pulley that is fixed on the state on the main shaft, therefore, not need to dismantle one by one flywheel and dismantle belt pulley simultaneously, can improve operation by the dismounting flywheel.
According to the present invention 2, by hold-down screw that belt pulley and flywheel is releasably fixing, can be rapidly and easily change flywheel.Therefore, when changing the penetration power of eedle, can shorten the activity duration significantly along with changing sewn object.
According to the present invention 3, change by in a plurality of flywheels that flywheel is different with weight or external diameter any one, use the same Sewing machines just can be rapidly and easily realize the penetration power of multiple eedle.Therefore, the penetration power of eedle can be in same Sewing machines, promptly changed, making can be carried out corresponding to multiple sewn object.In addition, when the penetration power of change eedle, do not need to dismantle or decompose flywheel parts in addition, can use existing products yet for covering.Therefore, need not make different types of cover again corresponding to weight or the different a plurality of flywheels of external diameter.So can use existing cover to the sewn object of various thickness or hardness, can suppress cost significantly.
Description of drawings
Fig. 1 represents the clipped stereogram as the sewing machine for covering chain stitch of embodiments of the invention.
Fig. 2 represents the key diagram of cutting a part open of the formation around the belt pulley.
Fig. 3 represents the stereogram of the connection status of belt pulley and flywheel.
The specific embodiment
(integral body of working of an invention mode constitutes)
Below, with reference to accompanying drawing 1～3, describe embodiments of the invention in detail.
Above-mentioned sewing machine for covering chain stitch 10 has the shank mechanism's (diagram is omitted) up and down that makes the eedle knee-action, with be placed on the needle plate 12 as the cloth of sewn object from the following cloth-feeding device of the cloth feeding direction work feed of direction regulation (diagram is omitted) down, with accommodate shank up and down mechanism and following cloth-feeding device sewing machine frame 20 and be removable at sewing machine frame 20 and the upper cloth feeding device 40 of the cloth on the needle plate 12 from last direction regulation cloth feeding direction work feed.
In the following description, vertical above-below direction as Z-direction, the length direction of the chain-drive section described later 23 that is in the sewing machine for covering chain stitch 10 that is arranged on the state on the horizontal plane as Y direction, the direction vertical of the plate face that is parallel to needle plate not shown in the figures 12 with Y direction as X-direction.And X-direction and Y direction and Z-direction are orthogonal.And any one of described upper cloth feeding device 40 and following cloth-feeding device is all along the X-direction work feed.
(sewing machine frame)
Sewing machine frame 20 comprises the 21 (Fig. 1 of sewing machine base portion with the needle plate that is used for placing cloth in the above, only represent above it in 2), with the vertical body 22 of the Sewing machines of erectting setting from the rear end side of sewing machine base portion 21 upward, extend the head of sewing machine portion 23 that is provided with along sewing machine base portion 21 with the upper end from the vertical body 22 of Sewing machines, integral body forms slightly コ word shape.
Sewing machine frame 20 is integrally formed metal system cast member things, and its inside is hollow, and above-mentioned shank mechanism up and down is housed in head of sewing machine portion 23, cloth-feeding device down is housed in sewing machine base portion 21.
(eedle and needle drive)
Eedle is maintained on the bottom of shank on the leading section that is disposed at head of sewing machine portion 23 (diagram is omitted), connects cloth on the needle plate 12 successively by knee-action.And, below needle plate 12, be provided with the known rotary shuttle mechanism that figure does not show, like this, the suture that passes eedle twines bottom line to be made.
Needle drive, by motor of sewing machine (diagram is omitted) as drive source, with the belt pulley 31 that transmits the rotation driving of motor of sewing machine by synchronous belt 35, with upward axle 32 as the machine spindle that keeps belt pulley 31, belt housing 33 with the periphery that is installed in belt pulley 31, with the flywheel 34 that is removable on the belt pulley 31, the described shank that is transformed to reciprocal driving force up and down with the shank that keeps eedle (diagram is omitted) with the rotary driving force of last axle 32 and transmits is mechanism's formation up and down.
In the leading section of head of sewing machine portion 23, described shank can be reciprocally supported along this Z-direction with the state along Z-direction.
And, the inside in head of sewing machine portion 23, last 32 is rotatably supported with the state along Y direction.The described axle 32 of going up is set on the length that almost reaches total length of this head of sewing machine portion 23, and the one end is connected with shank by mechanism about the described shank, and belt pulley 31 is given prominence to and be equipped with in the other end to the outside of sewing machine frame 20.
For mechanism about the shank,, just do not need to limit especially so long as can be transformed to spinning movement the mechanism of reciprocal linearly operating.For example, shank up and down mechanism is connected connector on the axle 32 by an end by eccentric cam, with the other end that is connected its connector and be fixed on shank abut formation on the shank.
Fig. 2 is the key diagram of cutting a part open of the formation on every side of expression belt pulley.Fig. 3 is the stereogram of the connection status of expression belt pulley and flywheel.
Belt housing 33, cover belt pulley 31 outer peripheral face almost whole and synchronous belt 35 pass through regional and Sewing machines indulge body 22 the belt pulley side end face almost on the whole, and being formed with circular port 33a, this circular port 33a exposes the end face 31b of opposition side of the vertical body 22 of Sewing machines of belt pulley 31.That is, the internal diameter of circular port 33a is set for more bigger than the external diameter of belt pulley 31, so do not hinder the rotation of belt pulley 31.Illustrate the state that flywheel 34 is installed among Fig. 1 to Fig. 2 on the end face 31b of belt pulley 31, but, in sewing machine for covering chain stitch 10, make thin and thickness homogeneous make thing the time, this flywheel 34 is configured to have the little manual operation unit of circular port 31a diameter than belt housing 33.At this moment, flywheel 34 is in the end face 31b of belt pulley 31 side, exposes to the outside from belt housing 33, therefore, can apply manual operation to belt pulley 31 and make the eedle knee-action.
Flywheel 34 is the flange shape rotary bodies with diameter bigger than belt pulley 31.Described flywheel 34 is concentric and releasably be installed on the end face 31b of this belt pulley 31 by 3 hold-down screw 34a and this belt pulley 31.In making, if sewn object is thicker or when hard, just penetrating of eedle can not carried out smoothly.Therefore, by flywheel 34 is installed on the belt pulley 31, the quality in the increase around the axle 32 has improved the rotary inertia around the axle 32 gone up that drives eedle, has strengthened the penetration power of eedle, simultaneously, can suppress the influence of cogging.Especially flywheel 34 has the diameter bigger than belt pulley 31, therefore, can improve rotary inertia effectively, provides stable penetration power to eedle.And, same with described belt pulley 31, when making the eedle knee-action, because have bigger diameter, so can operate with fainter power by manual operation.
And flywheel 34 can suitably load and unload according to the kind of described sewn object by hold-down screw 34a loading and unloading.And, as long as the multiple flywheel 34 that preparation varies in weight just can be selected suitable rotary inertia by a year more kinds of sewn object respectively, various sewn objects are carried out stable making smoothly.
(effect of embodiment)
And, in sewing machine for covering chain stitch 10, can be to the end face 31a loading and unloading flywheel 34 of the belt pulley 31 that exposes from belt housing 33, therefore, compare when changing the belt pulley of Different Weight according to the kind of sewn object and to each belt pulley needs, do not need to dismantle belt housing 33 or set up operation again, can easily change operation what belt pulley carried out synchronous belt.Especially flywheel 34 can be sought the further summary of its handling operation and the summary of charging crane by hold-down screw 34a loading and unloading.
And, the loading and unloading flywheel 34 on the end face 31b that exposes by at belt pulley 31 does not need the field-strip of belt housing 33, therefore, even use large diameter flywheel also not need belt housing 33 is divided into two to flywheel 34, can improve the productivity ratio of sewing machine for covering chain stitch 10 integral body.
And, in sewing machine for covering chain stitch 10,, when dismounting belt housing 33, need in dismounting flywheel 34, not dismantle the belt pulley 31 that sets up belt one by one by flywheel 34 being set dividually with belt pulley 31, carry out the loading and unloading of belt housing 33 easily.
And, during belt, also carry out the dismounting of belt to being in the belt pulley 31 that is fixed on the state on the main shaft 32 from the Sewing machines outside in dismounting by dismounting flywheel 34, therefore, dismounting belt pulley 31 can not improve operation when not needing to dismantle one by one flywheel 34.
Claims (3)
1, a kind of Sewing machines, comprise: eedle, drive the needle drive of described eedle up and down, an end is outstanding outside sewing machine frame also rotatably to be supported on the sewing machine frame and the main shaft that is connected with described needle drive with making, with on the jag that is fixed on described main shaft and by the belt pulley of belt to the power of described main shaft supply drive source, cover with the radiation direction of being arranged to cover at least belt pulley is characterized in that:
Be provided with and have than the big external diameter of described belt pulley and releasably be configured in the flywheel in the outside of the axis direction of described belt pulley.
2, Sewing machines according to claim 1 is characterized in that, described flywheel releasably is fixed on the described belt pulley by hold-down screw.
3, a kind of eedle driving force method of adjustment of Sewing machines, described Sewing machines comprises: eedle, drive the needle drive of described eedle up and down, an end is outstanding outside sewing machine frame also rotatably to be supported on the sewing machine frame and the main shaft that is connected with described needle drive with making, with on the jag that is fixed on described main shaft and by the belt pulley of belt to the power of described main shaft supply drive source, cover with the radiation direction of being arranged to cover at least belt pulley is characterized in that:
Setting has than the big external diameter of described belt pulley and releasably is configured in the flywheel in the outside of the axis direction of described belt pulley, respectively a plurality of weight or the different flywheel of external diameter is installed selectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004260331 | 2004-09-07 | ||
| JP2004260331A JP2006075250A (en) | 2004-09-07 | 2004-09-07 | Sewing machine and its needle driving force adjusting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746370A true CN1746370A (en) | 2006-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510103626 Pending CN1746370A (en) | 2004-09-07 | 2005-09-06 | Sewing machine and method for regulating drive force of its needle |
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| Country | Link |
|---|---|
| JP (1) | JP2006075250A (en) |
| CN (1) | CN1746370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102197172B (en) * | 2008-08-29 | 2015-08-05 | 耐克创新有限合伙公司 | Make the awl of awl feature in for the material of dress ornament |
| CN113165302A (en) * | 2018-09-24 | 2021-07-23 | 斯派克有限公司 | Drive mechanism for a wrapping material strand winder, wound wrapping material liner and method for producing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926140A (en) * | 2012-11-21 | 2013-02-13 | 吴江征明纺织有限公司 | Looping machine with pressing plates |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS433612Y1 (en) * | 1964-01-29 | 1968-02-15 | ||
| JPS57135378U (en) * | 1981-02-18 | 1982-08-24 | ||
| JPS61119656U (en) * | 1985-01-14 | 1986-07-28 | ||
| JP2620592B2 (en) * | 1988-10-15 | 1997-06-18 | 住友重機械工業株式会社 | Electric motor |
| JPH0793998B2 (en) * | 1990-11-28 | 1995-10-11 | ブラザー工業株式会社 | Rotation control device for sewing machine motor |
| JPH0552706A (en) * | 1991-08-28 | 1993-03-02 | Aisin Chem Co Ltd | Method and apparatus for testing clutch |
| JP2909386B2 (en) * | 1994-06-29 | 1999-06-23 | ジューキ株式会社 | Nakagama of sewing machine |
| JP3339769B2 (en) * | 1995-10-05 | 2002-10-28 | ブラザー工業株式会社 | Control device for sewing machine motor |
| JP4307608B2 (en) * | 1999-02-04 | 2009-08-05 | Ｊｕｋｉ株式会社 | sewing machine |
| JP2001104671A (en) * | 1999-10-08 | 2001-04-17 | Tokai Ind Sewing Mach Co Ltd | Multihead sewing machine |
| JP2002159772A (en) * | 2000-11-28 | 2002-06-04 | Juki Corp | Sewing machine |
-
2004
- 2004-09-07 JP JP2004260331A patent/JP2006075250A/en active Pending
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2005
- 2005-09-06 CN CN 200510103626 patent/CN1746370A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102197172B (en) * | 2008-08-29 | 2015-08-05 | 耐克创新有限合伙公司 | Make the awl of awl feature in for the material of dress ornament |
| CN113165302A (en) * | 2018-09-24 | 2021-07-23 | 斯派克有限公司 | Drive mechanism for a wrapping material strand winder, wound wrapping material liner and method for producing the same |
| CN113165302B (en) * | 2018-09-24 | 2023-12-08 | 斯派克有限公司 | Drive mechanism for a packaging material strand winding machine and packaging material strand winding machine |
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| Publication number | Publication date |
|---|---|
| JP2006075250A (en) | 2006-03-23 |
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Open date: 20060315 |