CN100535221C - Sewing needle feeding sewing machine - Google Patents
Sewing needle feeding sewing machine Download PDFInfo
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- CN100535221C CN100535221C CNB2004100304499A CN200410030449A CN100535221C CN 100535221 C CN100535221 C CN 100535221C CN B2004100304499 A CNB2004100304499 A CN B2004100304499A CN 200410030449 A CN200410030449 A CN 200410030449A CN 100535221 C CN100535221 C CN 100535221C
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- axle
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- feeding
- shank
- swing
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Abstract
The needle feeding sewing machine M is provided with: a horizontal feeding shaft 32 associated and connected with a lower shaft 16; a needle bar swinging shaft 42 connected with the horizontal feeding shaft 32 to swing a needle bar table 22 in a cloth feeding direction; and a association mechanism 35 for associating and connecting the horizontal feeding shaft 32 with the needle bar swinging shaft 42. The swinging lever member 43 for the association mechanism 35 connected to the needle bar swinging shaft 42 to swing it in the cloth feeding direction is disposed inside a timing belt 29 stretched between two timing pulleys 27 and 28 supported by an upper shaft 15 and a lower shaft 16 to connect the two timing pulleys 27 and 28. Therefore, it can miniaturize a needle feeding sewing machine by disposing a swinging link member for connecting a horizontal feeding shaft and a needle bar swinging shaft in an unoccupied space in the needle sewing machine.
Description
Technical field
The present invention relates to by suture needle and feed dog routing motion, can be to the processing cloth eedle feed sewing machine that carries out feeding.
Background technology
For example in the Sewing machines that carries out flush joint, normally when making processing cloth, the processing cloth that relies on feed dog will remain on the needle plate carries out feeding along fore-and-aft direction.In this occasion, the work feed action is to carry out under the state that is in the state of lifting position in suture needle, promptly extracts from processing cloth.Yet when processing cloth, when for example being the thick material of denim and so on, can occur can not be by the phenomenon of the correct feeding of above-mentioned feed dog because of the weight of this denim.For this reason, processing cloth for the thick material of above-mentioned denim and so on, in order correctly to carry out feeding, the known eedle feed sewing machine that has No. 2682346 communique of a kind of for example Japan patent to put down in writing, the structure of this eedle feed sewing machine is to thrust under the state of processing cloth in suture needle, make the synchronously swing rearward of this suture needle and feed dog, impel the work feed action of feed dog by the strength of described suture needle.
That is, this eedle feed sewing machine has: be arranged at the axle of going up in the sewing locomotive arm; Can swing the needle bar frame that is arranged on freely on the Sewing machines head along cloth feeding direction; Can move along the vertical direction and be supported on the shank of this needle bar frame freely; Be arranged at the lower shaft in the Sewing machines base plate; And rotation drives the described electrical motor of sewing machine of going up axle.And in column sections, the described right-hand member side that goes up axle is installed with shaft pulley, and shaft pulley under the right-hand member side of described lower shaft is installed with is linked with synchronous belt between it.The rotary driving force of having formed described electrical motor of sewing machine thus also is passed to the structure of lower shaft by synchronous belt.
In described Sewing machines base plate, be provided with and the rotation interlock of described lower shaft, the straight feeding axle that back and forth rotates repeatedly again.And, be provided with the feed dog with these lower shafts and straight feeding axle interlock, this feed dog according to rise, rearward send to mobile, descend, forwards return the quadravalence section motion that mobile order is carried out feeding.On the other hand, in described sewing locomotive arm, be provided with and make the shank swinging axle of described needle bar frame along fore-and-aft direction swing usefulness.And the reciprocal rotation of described straight feeding axle passes to this shank swinging axle by interlinked mechanism.This interlinked mechanism is made of connecting rod member, swing arm member etc.
Adopt above structure, during work feed, suture needle N moves synchronously swing rearward with the rearward feeding of feed dog under the state that thrusts processing cloth.Like this, even processing cloth is thick material, also can carry out correct feeding action by means of the work feed strength of described suture needle.
But in this eedle feed sewing machine, the swing arm member that constitutes described interlinked mechanism is the left side that is provided in the synchronous belt in the column sections.Therefore, set the space of swing arm member and synchronous belt about in described column sections, must having, can make the width shape of column sections become big.The result is because of the interval stenosis of the whole maximization of Sewing machines or column sections and shank, so reduced the working space of Sewing machines base plate left and right directions, causes the adverse consequences of operation difference.
Summary of the invention
The object of the invention is, the miniaturization that can make the column sections width is provided and then makes the Sewing machines integral miniaturization or enlarges working space on the Sewing machines base plate to improve the eedle feed sewing machine of operation.
Eedle feed sewing machine of the present invention comprises: be arranged at the axle of going up in the sewing locomotive arm; Can swing the needle bar frame that is arranged on freely on the Sewing machines head along cloth feeding direction; Can move along the vertical direction and be bearing in freely on this needle bar frame, go up the shank that axle moves up and down linkedly with described; Be arranged at the lower shaft in the Sewing machines base plate; In column sections, be hung on be installed on described on axle rotary body be installed on the rotation transmission union body that carries out the ring-type that the rotation between two rotary bodies transmits between the rotary body of described lower shaft; The straight feeding axle that is arranged in the described Sewing machines base plate, links with described lower shaft interlock shape ground; Carry out the feed dog of feeding tetrathlon linkedly with described lower shaft and straight feeding axle; Be arranged in the described sewing locomotive arm, make the shank swinging axle of described needle bar frame swing linkedly with described straight feeding axle; And the interlinked mechanism that described straight feeding axle and described shank swinging axle are linked linkedly, described interlinked mechanism has: the swing arm member that links with described shank swinging axle, can swing along cloth feeding direction; And the connecting rod member that this swing arm member and described straight feeding axle are linked, and, described swing arm member is provided in described rotation between described two rotary bodies transmits inner side with union body.
Adopt this eedle feed sewing machine, rotate the inner side that transmits with union body, therefore with swing arm member and rotation transmission compare, can reduce to set the space with the occasion that union body shape arranged side by side is provided in the column sections because the swing arm member is provided in.The result is the width that can reduce column sections, makes integral miniaturization.Perhaps, the working space between column sections and shank can be enlarged, operation can be improved.
In above-mentioned eedle feed sewing machine, described rotation is transmitted and can be made of synchronous belt with union body.
Adopt this structure, can not cause slippage etc., can will go up rotatablely moving of axle and correctly pass to lower shaft.
Description of drawings
Fig. 1 represents one embodiment of the invention, is the approximate three-dimensional map of eedle feed sewing machine internal mechanism.
Fig. 2 be the column sections internal mechanism want portion's vertical section front view.
Fig. 3 be the column sections internal mechanism want portion's vertical section right side view.
Fig. 4 represents another embodiment, is the approximate three-dimensional map of eedle feed sewing machine internal mechanism.
The specific embodiment
Below with reference to Fig. 1～Fig. 3 an embodiment who is applicable to eedle feeding flat seam machine of the present invention is described.
As shown in Figure 1, eedle feeding flat seam machine M has the upwardly extending Sewing machines base plate 10 of right and left.The right part of this Sewing machines base plate 10 is provided with the column sections 11 of extending upward.And,, be provided with and sewing locomotive arm 12 described Sewing machines base plate 10 opposed shapes, that extend to left in the upper end of this column sections 11.Left part at this sewing locomotive arm 12 is provided with Sewing machines head 13.
In described sewing locomotive arm 12, be provided with along axle 15 in the left and right directions extension.As shown in Figure 2, axle 15 rotatably is installed on the framework 14 of Sewing machines M by a plurality of bearings 17,18 (only illustrating 2) on this, is rotated driving by not shown electrical motor of sewing machine.And for example shown in Figure 2, stretch out to right-hand from described column sections 11 right part of axle 15 on this, at this manual pulley 37 is installed.And the top that is positioned at described column sections 11 on this on axle 15 is installed with axle timing belt pulley 28 (suitable with rotary body).
As shown in Figure 1, in described Sewing machines head 13, be provided with needle bar frame 22 again.On this needle bar frame 22, move up and down and supporting shank 21 freely, in the bottom of this shank 21 suture needle N is installed.At this moment, the upper end of this needle bar frame 22 by fulcrum 23 at cloth feeding direction, be can swing freely on the fore-and-aft direction.And, in Sewing machines head 13, be provided with shank up-down mechanism 20, described rotation transformation of going up axle 15 can be become moving up and down of shank 21.
That is, at first, needle bar crank 24 is installed in described left part of going up axle 15, the upper end with connecting rod 25 links with this needle bar crank 24 rotationally again.The bottom of this connecting rod 25 links by the pars intermedia of shank link 26 with described shank 21.
Adopt above-mentioned structure, in case drive upward axle 15 by not shown electrical motor of sewing machine rotation, then needle bar crank 24 is rotated.Secondly, the rotation transformation of this needle bar crank 24 becomes moving up and down of described connecting rod 25, by shank link 26 shank 21 is moved up and down.At this moment, last axle 15 rotations 1 circle, shank 21 carries out 1 time and moves up and down.In addition, on Sewing machines head 13, also be provided with the thread take-up tension lever up-down mechanism of not shown general structure.
And, in described sewing locomotive arm 12, being provided with the shank swinging axle 42 that links, is used to make the swing of needle bar frame 22 fore-and-aft directions with straight feeding axle 32 described later, this shank swinging axle 42 extends along left and right directions, and parallel shape ground is positioned at described below of going up axle 15.The base end part of the left part of this shank swinging axle 42 and shank swing arm 44 is affixed, and the leading section of this shank swing arm 44 engages with the slot 22a that the bottom of described needle bar frame 22 extends to form along the vertical direction.Thus, the reciprocal rotation (coaxial rotation of the both forward and reverse directions of predetermined angular) by shank swinging axle 42 makes described needle bar frame 22 and then shank 21 swing along fore-and-aft direction.
On the other hand, in described Sewing machines base plate 10, be provided with rotationally and the described lower shaft 16 of going up axle 15 parallel shape ground along the left and right directions extension.In lower shaft 16 right parts, the lower position of axle timing belt pulley 28 is installed with lower shaft timing belt pulley 27 (suitable with rotary body) on described.The diameter of this lower shaft timing belt pulley 27 and the described axle timing belt pulley identical (the identical number of teeth) of going up.And, this lower shaft timing belt pulley 27 and be arranged at described on axle 15 on axle hanging synchronous belt 29 (transmitting suitable) between the timing belt pulley 28 with union body with rotation.Utilize this synchronous belt 29, the rotation that the mode with 1 to 1 will go up axle 15 passes to lower shaft 16.
Again, on the left part of described Sewing machines base plate 10, in the face of described shank 21 ground are provided with not shown needle plate.By the not shown presser feet that is arranged at described Sewing machines head 13 bottoms, not shown processing cloth is remained on this needle plate.In Sewing machines base plate 10, be provided with not shown shuttle mechanism at the lower position of described needle plate, this shuttle mechanism by with the routing motion of described suture needle N, be used on processing cloth, forming needle tracking.This shuttle mechanism synchronously is rotated driving along with the rotation of described lower shaft 16 with moving up and down of described shank 21.
Secondly, in Sewing machines base plate 10, be provided with feed dog 45 (with reference to Fig. 1), be used for (depth side) feeding rearward of described processing cloth at the lower position of described shank 21.This feed dog 45 has the rectangular block shape structure of tooth portion above being, again, but portion is provided with the pin hole of described suture needle N break-through in the central.At this moment, feed dog 45 is configured to carry out the form that haunt (up and down) of the opening that forms on the break-through needle plate move and move forward and backward.
As shown in Figures 2 and 3, be provided with the straight feeding axle 32 that extends along left and right directions in Sewing machines base plate 10, these straight feeding axle 32 parallel shape ground are positioned at the place ahead of described lower shaft 16.Be installed with the discoideus eccentric wheel 34 that is positioned at described lower shaft timing belt pulley 27 lefts this moment as shown in Figure 1 on described lower shaft 16.The rearward end of rotating straight feeding connecting rod 30 is installed on the periphery of this eccentric wheel 34.At the leading section of this straight feeding connecting rod 30, the bottom that square block and the switch (all not shown) by general structure is being rotatably mounted straight feeding bar 31.And the upper end of this straight feeding bar 31 links with the straight feeding arm 33 that is installed on the described straight feeding axle 32.
Adopt said structure, in case make described lower shaft 16 rotations, then make the leading section of straight feeding connecting rod 30 carry out oscillating motion along fore-and-aft direction by described eccentric wheel 34, thus, can make straight feeding axle 32 back and forth rotate (the coaxial rotation of the both forward and reverse directions of predetermined angular) by straight feeding bar 31 and straight feeding arm 33.
At this moment, in the left part of described lower shaft 16, linking the feed dog up-down mechanism (not shown) that feed dog 45 is moved up and down not shownly.In the left part of described straight feeding axle 32, linking the feed dog that described feed dog 45 is moved forward and backward and moving forward and backward mechanism.Thus, lower shaft 16 rotation 1 circle, feed dog 45 according to rise (stretching out), rearward move horizontally, descend (sinking to) to the needle plate top, forwards return the tetrathlon that mobile order is carried out feeding.
In described column sections 11, be provided with interlinked mechanism 35, be used for the reciprocal rotation of described straight feeding axle 32 is passed to described shank swinging axle 42.This interlinked mechanism 35 is done an explanation.The base end part of shank wobble crank 36 at first, is installed in the right part of described straight feeding axle 32.At this moment, the leading section of this shank wobble crank 36 is positioned at the position (top) of departing from described straight feeding axle 32 axle center, and this leading section links with the base end part of the connecting rod member 39 that extends along fore-and-aft direction rotationally.
On the other hand, the swing arm member 43 that extends is installed downwards in the right part of described shank swinging axle 42.At this moment, this swing arm member 43 is provided in and hang on described up and down 2 the inner side of synchronous belt 29 of 27,28 of timing belt pulleys.And the leading section of described connecting rod member 39 links with the bottom of described swing arm member 43 rotationally.In the present embodiment, connecting rod member 39 on the left of being positioned at respect to synchronous belt 29 is, a side of Sewing machines head 13.
Adopt said structure, the reciprocal rotation of straight feeding axle 32 passes to described shank swinging axle 42 by connecting rod member 39 and swing arm member 43, and shank swinging axle 42 is back and forth rotated, and needle bar frame 22 and then shank 21 are swung along fore-and-aft direction.In addition, though swing arm member 43 is swung this pendulum angle minimum (for example about 2 degree) along fore-and-aft direction.Thus, this swing arm member 43 does not contact with synchronous belt 29, so can be provided in its inboard.
Like this, needle bar frame 22 and then shank 21 synchronously carry out swing with moving forward and backward of feed dog 45.At this moment, the fore-and-aft direction swing that moves forward and backward (work feed action) and shank 21 of feed dog 45 is carried out synchronously with moving up and down of last axle 15 shanks that produced 21 (suture needle N), but each phase place of 15,16,32,42 is adjusted to: the form that (suture needle N extract from processing cloth before), shank 21 are rearward swung when shank 21 still is in the state of lower position.That is, under suture needle N thrust state in processing cloth (pin hole 46 of feed dog 45), feed dog 45 rearward moved, and shank 21 is also swing rearward meanwhile.Like this, can carry out the work feed action by feed dog 45 and the routing motion of suture needle N.When suture needle N under the state that processing is extracted the cloth upward, shank 21 is synchronous with feed dog 45 return action forwards, forwards swings and gets back to original position.
Adopt the eedle feeding flat seam machine M of this structure, owing to swing arm member 43 is provided in the inner side of the synchronous belt 29 of 27,28 of 2 timing belt pulleys, and described connecting rod member 39 is disposed at a side of Sewing machines head 13 with respect to described synchronous belt 29, therefore interior with swing arm member 43 and synchronous belt about 29 shapes arranged side by side being provided in column sections 11 occasion is compared, and can reduce the space that sets of these members.The result is in this eedle feeding flat seam machine M, makes the width miniaturization of column sections 11 under the state that keeps original described synchronous belt 29 and 13 distances of Sewing machines head, can make described eedle feeding flat seam machine M integral miniaturization.Perhaps, under the state that keeps the whole former state of described eedle feeding flat seam machine M, make the width miniaturization of column sections 11, can enlarge working space, can improve operation.Not only can reduce the size of eedle feeding flat seam machine M slightly, but also can enlarge working space slightly again.
Fig. 4 represents another embodiment of the present invention.Among this embodiment, can with the connecting rod member 39 of interlinked mechanism 35 from the right side (towards synchronous belt 29, with the reverse side of Sewing machines head 13) be installed on the swing arm member 43.The result is the width miniaturization that makes column sections 11A under the state that keeps the whole former state of described eedle feeding flat seam machine M, can enlarge working space.Perhaps, under the state that keeps original described synchronous belt 29 and 13 distances of Sewing machines head, can make eedle feeding flat seam machine M integral miniaturization.
The present invention is not limited to each above-mentioned embodiment, can do various changes.For example, each embodiment be with timing belt pulley as rotary body, synchronous belt transmitted as rotation uses union body, but also can adopt belt pulley and belt (flat belt and vee-belt) or also can adopt sprocket wheel and chain.
Claims (4)
1. an eedle feed sewing machine comprises: be arranged at the axle of going up in the sewing locomotive arm; Can swing the needle bar frame that is arranged on freely on the Sewing machines head along cloth feeding direction; Can move along the vertical direction and be bearing in freely on this needle bar frame, go up the shank that axle moves up and down linkedly with described; Be arranged at the lower shaft in the Sewing machines base plate; In column sections, be hung on be installed on described on axle rotary body be installed on the rotation transmission union body that carries out the ring-type that the rotation between two rotary bodies transmits between the rotary body of described lower shaft; The straight feeding axle that is arranged in the described Sewing machines base plate, links with described lower shaft interlock shape ground; Carry out the feed dog of feeding tetrathlon linkedly with described lower shaft and straight feeding axle; Be arranged in the described sewing locomotive arm, make the shank swinging axle of described needle bar frame swing linkedly with described straight feeding axle; And the interlinked mechanism that described straight feeding axle and described shank swinging axle are linked linkedly, it is characterized in that,
Described interlinked mechanism has:
The swing arm member that links with described shank swinging axle, can swing along cloth feeding direction; And
The connecting rod member that this swing arm member and described straight feeding axle are linked up,
The inner side of using union body is transmitted in the described rotation that described swing arm member is provided between described two rotary bodies.
2. eedle feed sewing machine as claimed in claim 1 is characterized in that, described rotation is transmitted and is made of synchronous belt with union body.
3. eedle feed sewing machine as claimed in claim 1 is characterized in that, described connecting rod member transmits with respect to described rotation and uses union body, is positioned at Sewing machines head one side.
4. eedle feed sewing machine as claimed in claim 1 is characterized in that, described connecting rod member transmits with respect to described rotation and uses union body, is positioned at the opposition side with the Sewing machines head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003118163A JP4054993B2 (en) | 2003-04-23 | 2003-04-23 | Needle feed sewing machine |
| JP2003118163 | 2003-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1540054A CN1540054A (en) | 2004-10-27 |
| CN100535221C true CN100535221C (en) | 2009-09-02 |
Family
ID=33497782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100304499A Ceased CN100535221C (en) | 2003-04-23 | 2004-03-18 | Sewing needle feeding sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4054993B2 (en) |
| CN (1) | CN100535221C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037833B (en) * | 2006-03-17 | 2011-07-06 | 兄弟工业株式会社 | Feeding device for pattern sewing machine |
| JP5050880B2 (en) * | 2007-03-22 | 2012-10-17 | アイシン精機株式会社 | Sewing hook timing adjustment device |
| JP5149575B2 (en) * | 2007-09-20 | 2013-02-20 | Ｊｕｋｉ株式会社 | sewing machine |
| CN103614866B (en) * | 2013-12-02 | 2015-09-23 | 中国船舶重工集团公司第七〇五研究所 | A kind of method controlling electro-pattern-sewing machine and adapt to the sewing of different-thickness sewing |
| CN105970504B (en) * | 2016-05-24 | 2018-10-30 | 无锡鼎昌包装科技有限公司 | A kind of label packaging sewing machine drive structure |
| JP2019170707A (en) * | 2018-03-28 | 2019-10-10 | ペガサスミシン製造株式会社 | Needle bar drive mechanism for sewing machine |
| CN109706629A (en) * | 2019-02-22 | 2019-05-03 | 浙江美机缝纫机有限公司 | The sewing length adjustment device of sewing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2682346B2 (en) * | 1992-08-22 | 1997-11-26 | ブラザー工業株式会社 | Needle feed / lower feed switching device for sewing machines with needle feed function |
| CN1222598A (en) * | 1997-10-02 | 1999-07-14 | 重机株式会社 | Needle feeding sewing machine |
-
2003
- 2003-04-23 JP JP2003118163A patent/JP4054993B2/en not_active Expired - Fee Related
-
2004
- 2004-03-18 CN CNB2004100304499A patent/CN100535221C/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2682346B2 (en) * | 1992-08-22 | 1997-11-26 | ブラザー工業株式会社 | Needle feed / lower feed switching device for sewing machines with needle feed function |
| CN1222598A (en) * | 1997-10-02 | 1999-07-14 | 重机株式会社 | Needle feeding sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4054993B2 (en) | 2008-03-05 |
| JP2004321366A (en) | 2004-11-18 |
| CN1540054A (en) | 2004-10-27 |
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Decision date of declaring invalidation: 20110114 Decision number of declaring invalidation: 15934 Granted publication date: 20090902 |