CN1143018C - Device of disposing of severed thread and for sewing machine - Google Patents
Device of disposing of severed thread and for sewing machine Download PDFInfo
- Publication number
- CN1143018C CN1143018C CNB001180460A CN00118046A CN1143018C CN 1143018 C CN1143018 C CN 1143018C CN B001180460 A CNB001180460 A CN B001180460A CN 00118046 A CN00118046 A CN 00118046A CN 1143018 C CN1143018 C CN 1143018C
- Authority
- CN
- China
- Prior art keywords
- standard grade
- thread
- reaching
- clamp
- cloth
- 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.)
- Expired - Fee Related
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
- D05B29/08—Presser feet comprising relatively-movable parts
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
- D05B37/04—Cutting devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
To provide a bird's nest preventive apparatus for a sewing machine capable of effectively preventing the bird's nest. A bird's nest preventive apparatus for a lockstitch machine having thread cutting units 50 and 52 is provided. The apparatus includes holding members 56 and 58 for holding the end portion of a needle thread which is passed through cloth at a first stitch. The holding members 56 and 58 therefor are located between the cloth and a hook.
Description
The present invention relates to the device of disposing of severed thread of Sewing machines.
It has been known cutting off the thread cutting mechanism of reaching the standard grade and rolling off the production line when sewing finishing between needle plate and shuttle in the past.Figure 12 and Figure 13 are that the general stitching sewing machine that has thread cutting mechanism begins preceding and makes and make the sectional drawing of thing in the way.In Figure 12, Sewing machines leaves certain length earlier at 6 pin holes 4 from pin 2 of reaching the standard grade and (is generally under the state of 30mm～40mm) and stops.This is to see the apparent phenomenon that needle tracking is skipped that goes up in order when to prevent to make beginning do not form needle tracking, 6 phenomenons that come off from pin hole 4 also prevent to reach the standard grade, thereby reach the standard grade and to leave to a certain degree above length, in having the Sewing machines of thread cutting mechanism, the thread cutting mechanism that is constituted should make to reach the standard grade and leave certain length.
Make at the beginning, as shown in figure 13, reach the standard grade 6 the above-mentioned residual of the inboard of 1 pinprick break-through cloth 8, along with being sewn into 2 pinpricks, 3 pinpricks ..., being wrapped on these needle trackings, the outward appearance of cloth becomes and is difficult to see.Here it is owing to make beginning the time reach the standard grade stay the long side effect that produces, the state of the line that has twined is called base nest (bird's nest).10 for rolling off the production line among the figure.
In order to address this problem, a kind of thread end holding device of going up is proposed.If adopt this device, make beginning and the time reach the standard grade and 6 can not be wrapped on other the needle tracking, be sewn into the such goods of Figure 14.Figure 15 and Figure 16 are this views of going up an example of thread end holding device of expression, disclose this device in the special fair 7-59268 communique of JP.
When carrying out trimming, as shown in figure 15, reach the standard grade and catch parts 20 and recess to the position of recessing of leaving pin 2.Trimming action one finishes, and arm 18 just rotates, and reaches the standard grade to catch parts 20 and move to the catching position shown in the chain-dotted line of Figure 16, and this postbrachium 18 is got back to the position of recessing shown in Figure 15 towards backward rotation.The front end of catching parts 20 of reaching the standard grade becomes hook-shaped, by reaching the standard grade that this reciprocating motion just can capture on the needle point to be stayed.Leaf spring 22 is arranged to catch parts 20 and contact with reaching the standard grade, therefore, when get back to Fig. 5 recess the position time, the end of a thread of reaching the standard grade remained on to reach the standard grade catches between parts 20 and the leaf spring 22.
Make be about to begin before, reach the standard grade and catch parts 20 and rotate, move towards the position of readiness shown in the solid line of the Figure 16 that approaches pin, after this, make beginning.As original, also keep this moment reaching the standard grade.When carrying out making, reaching the standard grade exactly and rolling off the production line of 2～3 pins around a time-out, reach the standard grade and catch the position of recessing that parts 20 are got back to Fig. 5, around here, the caused deviation of phase difference of catching parts 20 and leaf spring 22 by reaching the standard grade makes to reach the standard grade and opens, leaves to reach the standard grade and catch parts 20.As described above, not form build nest in the cloth, and reaching the standard grade of can making on the cloth to be stayed shortens.
Yet, described such in the past on have following problem in the thread end holding device.
In sewing machine for covering chain stitch,, be provided with cloth presser in order to push down near the cloth 8 the pin.For example the occasion of Figure 15, Figure 16 is pushed down cloth 8 by presser feet 14, have as the above-mentioned end holding device of reaching the standard grade the occasion of catching 6 the structure of reaching the standard grade from the upside of cloth 8, the position of readiness of catching parts 20 of reaching the standard grade too will contact with this presser feet 14 when falling pin.For this reason, only can make the seizure parts 20 of reaching the standard grade arrive with presser feet 14 discontiguous positions to come near the pin that falls.Therefore, 6 length that must stay 20mm on cloth 8 of reaching the standard grade are made the back operator and must 6 be sheared operation to reaching the standard grade of being stayed, and this just needs very big labour and time.In addition, when making fagot on the surface of footwear and bag etc., if 6 the upper end of reaching the standard grade is left on the surface, then the outward appearance of goods is difficult to see.Make reaching the standard grade that the back operator will leave in this case and 6 move the inboard to, must carry out to the eye less than the such operation of the end of a thread, thereby need very big labour and time.
In interlock seam sewing machine and embroidery machine,, be provided with and keep cloth can make the compress frame that moves horizontally with respect to the pin position simultaneously as the cloth presser of compress.In this Sewing machines, also different with the shape of the kind compress frame of making thing according to the style of making, it is different with the position relation of compress frame perhaps to make the beginning hour hands.Therefore, resemble to have the above-mentioned last thread end holding device and catch 6 the structure of reaching the standard grade when being used for this Sewing machines from the upside of cloth 8, make each just change of engineering and must carry out the position adjustment near the position of readiness of catching parts 20 of reaching the standard grade that keeps the pin that falls reaching the standard grade, thereby need very big labour and time
And, need be to catch the maintenance masterpiece small adjustment of parts when keeping reaching the standard grade by reaching the standard grade.For example, when thread holding device has structure as described above, need reaching the standard grade of 1 pinprick be guided to the dynamic balance of the inboard of cloth with shuttle.Yet, because the kind of line and the power that the sewing condition shuttle is guided to the inboard of cloth with reaching the standard grade of 1 pinprick are various.There is following problems in the mechanism that employing is reached the standard grade by leaf spring 22 such elastomers maintenances in the past: keep reaching the standard grade at 1 pinprick place always, can not interrupt, the result will form the base nest, if perhaps take place elastomer is replaced with powerful elastomer for anti-phenomenon here, thread end can not leave and the cloth that can stretch on the contrary on the seizure parts 20 of reaching the standard grade were got back to when recessing the position, made on the thing and will produce wrinkle etc.
Therefore, general purpose of the present invention provides a kind of device of disposing of severed thread that can prevent to build the Sewing machines of nest effectively.
Another object of the present invention provides a kind of the needs and catches the Sewing machines device of disposing of severed thread that parts carry out position adjustment etc. to reaching the standard grade according to the position of cloth presser and shape.
A further object of the present invention provide a kind of by catch from the very near position of the pin that falls reach the standard grade, can make stay in the cloth on the device of disposing of severed thread of the very short Sewing machines of the length of thread end.
The device of disposing of severed thread of the Sewing machines that the confining force when another purpose of the present invention provides a kind of can reaching the standard grade to maintenance is easily adjusted.
The invention provides a kind of device of disposing of severed thread of Sewing machines for achieving the above object, in having the sewing machine for covering chain stitch of cutting facility, it is characterized in that the last thread end holding member that the last thread end inside the break-through cloth is remained in first pinprick is arranged between cloth and the shuttle.
The described thread end holding member of going up is made of lamellar parts and thread-like member.
Described cutting facility can be cut off in reaching the standard grade and rolling off the production line at least one at the downside of cloth, described go up the thread end holding member wait reach the standard grade break-through first pinprick position of readiness, the holding position that keeps reaching the standard grade, avoid and these three positions of recessing the position that cutting facility takes place to disturb between move.
Be more preferably, being provided with can be to the adjusting device of being adjusted by the described confining force of going up the last thread end that the thread end holding member produced.
Fig. 1 represents to be equipped with the outside drawing of the hem-stitch sewing machine of device of disposing of severed thread of the present invention.
Fig. 2 is that expression is in the embodiment of device of disposing of severed thread of the present invention under the state of position of readiness, sees the view of the needle plate part of Fig. 1 from below.
Fig. 3 is the side view of seeing from the M direction of Fig. 2.
Fig. 4 is the time diagram of the device of disposing of severed thread action of expression present embodiment.
Fig. 5 is the plane of the state of the holding position in the expression present embodiment, and described holding position is that clamp wire cylinder disconnects and the clamp cylinder activation.
Fig. 6 is the plane of the state of recessing the position in the expression present embodiment, and the described position of recessing is that clamp wire cylinder and clamp cylinder all disconnect.
Fig. 7 is the part cross-section side view of clamp and clamp position wiry relation in the expression present embodiment, and described clamp and clamp wire are in electromagnetic valve A and electromagnetic valve B and connect and reach the standard grade by the state between clamp wire and the clamp.
Fig. 8 is that expression is reached the standard grade in the present embodiment, the part cross-section side view of clamp and clamp position wiry relation, and they are in that electromagnetic valve A disconnects and electromagnetic valve B connects and the state of reaching the standard grade and being caught by clamp wire and clamp.
Fig. 9 is that electromagnetic valve A disconnects and electromagnetic valve B connects and thread take-up tension lever is reached the standard grade when arriving top dead-centre, the part cross-section side view of the relation between clamp and the clamp wire in the expression present embodiment.
Figure 10 be in the expression present embodiment electromagnetic valve A disconnect and electromagnetic valve B connects and reach the standard grade during work feed, the part cross-section side view of clamp and clamp relation wiry.
The view of Figure 11 needle tracking that to be expression formed by the Sewing machines of the device of disposing of severed thread with present embodiment.
Figure 12 is a sectional drawing of making thing before in the past the stitching sewing machine that has thread cutting mechanism begins.
Figure 13 is a sectional drawing of making thing in the past the stitching sewing machine way that has thread cutting mechanism.
Figure 14 is the view of the Sewing machines needle tracking of thread end holding device in the employing of representing in the past.
Figure 15 is a view of representing last thread end holding device in the past.
Figure 16 is a view of representing last thread end holding device in the past.
Below the present invention is described in detail with reference to the accompanying drawings.
Among Fig. 1, be fixed with Sewing machines head 34 on the Sewing machines base plate 30, base plate 32 is arranged on the sewing machine table 30.Compress frame 36 is made into to move up and down the structure of making thing to push down, and lower plate 38 can move on horizontal plane according to making style under the state of making thing with 36 clampings of compress frame.
Shank 40 is installed on Sewing machines head 34, and this shank 40 moves up and down with the rotation interlock of not shown main shaft, and suture needle 42 is installed in the lower end of this shank 40.Be fixed with needle plate 44 on the Sewing machines base plate 32, form the pin hole 46 that is passed through when suture needle 42 descends on this needle plate 44.Also fixing on the Sewing machines base plate 32 with needle plate 44 and roughly be positioned at the cloth platform 48 on the one side.
In addition, though not shown among Fig. 1, be provided with in the bottom of needle plate 44 hold the shuttle that rolls off the production line, catch when suture needle 42 descends reach the standard grade coil and with roll off the production line around shuttle mechanism and the thread cutting mechanism that will reach the standard grade and roll off the production line and cut off during sewing finishing.This thread cutting mechanism is provided with and is used to regulate the known device of making the line length that when beginning come out from needle point.
In Fig. 2 and Fig. 3, movable measuring appliance 50 and fixation measuring device 52 are arranged on the inside of needle plate 44.50 rotate around the rotation center when the sewing finishing by this movable measuring appliance 50, its leading section reciprocating motion, thus catch in reaching the standard grade and rolling off the production line at least one, fixation measuring device 52 is cut off by the downside that is engaged on cloth with this movable measuring appliance 50 and is reached the standard grade and roll off the production line.
54 are mounted in the device of disposing of severed thread on the cloth platform 48, it has laminal clamp (lamellar parts) 56, with respect to clamp wire (wire rod) 58 these clamp 56 removable installations, that form by piano wire, and be fixed on the clamp 56, prevent the guide plate 60 that clamp wire 58 comes off.Clamp 56 and clamp wire 58 constitute goes up the thread end holding member.Clamp wire 58 links to each other with clamp wire cylinder 64 by connector 62, is driven by this clamp wire cylinder 64.Clamp 56 and clamp wire cylinder 64 are fixed on the cylinder platform 66.
Device of disposing of severed thread 54 also has the substrate 70 that is fixed on the cloth platform 48.Be fixed with clamp cylinder 68 on this substrate 70.Cylinder platform 66 can be moved by this clamp cylinder 68.By driving this clamp cylinder 68, also can move with the clamp on being fixed on cylinder platform 66 56 and clamp wire cylinder 64, still, clamp 56 can adopt by this mobile phase for pin hole 46 towards near and recess the structure that direction moves.
Clamp wire cylinder 64 links to each other with not shown electromagnetic valve A by snorkel 72.In the way of the air feed path that stretches out side of clamp wire cylinder 64, be provided with pressure-reducing valve (not shown), can adjust the driving force of clamp wire 58.When electromagnetic valve A is connection, 64 one-tenth attraction states of clamp wire cylinder, the front end 58a of clamp wire 58 is in the state that separates with the leading section 56a of clamp 56 as shown in Figure 7.When electromagnetic valve A disconnected, clamp wire cylinder stretched out state for 64 one-tenth, and the front end 58a of clamp wire 58 is in the state of the leading section 56a that approaches clamp 56 as shown in Figure 8.Fig. 2 and Fig. 3 represent the state of electromagnetic valve A for connecting.
In Fig. 4, be output as the initiation command of making that Sewing machines rotates order by sewing machine foot pedal etc., electromagnetic valve A and electromagnetic valve B just connect, and shown in Fig. 2 and 3, pin hole 46 is between clamp wire 58 and clamp 56.This position is a position of readiness of waiting for 6 break-through, first pinprick of reaching the standard grade.That is, at this moment, because machine spindle begins to rotate, finish the break-through at cloth first pinprick, plant these needlework and caught by shuttle mechanism, thus, reaching the standard grade 6 falls to as shown in Figure 7 and plants, and passes through between clamp 56 and clamp wire 58.
After this, Sewing machines is rotated further, and shank sends shank top dead-centre signal when arriving top dead-centre, receives this signal, and electromagnetic valve A disconnects, and thus, device becomes the state of Fig. 5.At this moment, as shown in Figure 8, reach the standard grade 6 by clamp wire 58 and clamp 56 clampings.Therefore, position shown in Figure 8 is 6 holding positions by clamp wire 58 and clamp 56 maintenances of reaching the standard grade.
After this, Sewing machines still is rotated further, and not shown thread take-up tension lever is facing to top dead-centre, produces thus to mention 6 the power of reaching the standard grade.At this moment, though reach the standard grade 6 by clamp wire 58 and clamp 56 maintenances, this confining force is regulated by pressure-reducing valve so that it is lower than the power that thread take-up tension lever is mentioned.Because the power of mentioning of thread take-up tension lever is decided by the last line tension that tension disk added, therefore, corresponding to the adjusting of this tension disk, as long as regulate pressure-reducing valve.
Therefore, when thread take-up tension lever arrives top dead-centre, 6 become shorter from reaching the standard grade of planting out, it is such to become Fig. 9.At this moment, plant 6 the length of being stayed of reaching the standard grade and shorten, just be difficult to take place to build nest as long as can make.Be provided with not resembling present embodiment in the Sewing machines in the past of wire-clamping device, if the length that line leaves is extremely short, because of the trend that the thread take-up tension lever of a pinprick is mentioned, reaching the standard grade then comes off from cloth, will cause wire jumper.
After this, in order to form needle tracking, during work feed, because cloth resists mutually with 6 the bend of reaching the standard grade, reaching the standard grade 6 stretches on feeding direction, comes off between clamp 56 and clamp wire 58 as shown in figure 10.
After this, forming the number pin needle tracking stage, electromagnetic valve B disconnects, and as shown in Figure 6, clamp 56 moves towards the position of recessing that becomes the position of leaving pin hole 46, movable measuring appliance 50 and fixation measuring device 52 with clamp wire 58.
After this, be sewn into last pin, carry out trimming when action, movable measuring appliance 50 reciprocating motion below pin hole 46, still, at this moment clamp 56 and clamp wire 58 can not disturb with movable measuring appliance owing to be in the state of recessing shown in Figure 6.
By the cloth of making like that shown in above, as shown in figure 11, do not build nest, and the length that line is stayed in the cloth is shorter, become goods very attractive in appearance.
Though more than the embodiment shown in reference to the accompanying drawings the invention has been described,, can do various variations to embodiment.For example, also can adopt o as each actuator.At this moment, can be undertaken by the control that its switching is switched, changed in the energising of subtend o the adjustment of the following confining force of thread end.
The structure of device of disposing of severed thread of the present invention is that last thread end holding member is arranged between cloth and the shuttle, and the last thread end inside the break-through cloth is remained in first pinprick.Because keeping thread end between cloth and the shuttle, therefore the distance from cloth to last thread end holding position only is roughly the thickness of needle plate.Therefore, by reaching the standard grade from the very near position seizure of the pin that falls, the length of staying the last thread end in the cloth just can be very short.Therefore, can prevent to build nest effectively, and not leave the end of a thread on the surface of sewings, thereby, can guarantee that the goods appearance is very attractive in appearance.And, because last thread end holding member is arranged between cloth and the shuttle, do not need the seizure parts of reaching the standard grade to be carried out the position adjustment according to the position and the shape of cloth presser.
And when last thread end holding member is made of lamellar parts and wire rod, only can be installed in the gap between needle plate and shuttle.
Can make the thread end holding member wait reach the standard grade break-through first pinprick position of readiness, the holding position that keeps reaching the standard grade, avoid and these three positions of recessing the position that cutting facility takes place to disturb between the occasion that moves, even Sewing machines is not with thread cutting mechanism, also can keep thread end from the very near position of pin hole.
And be provided with can to by on the thread end holding member produced on the occasion of the adjusting device adjusted of the confining force of thread end, can easily adjust by the confining force when keeping reaching the standard grade.Therefore, often do not have wire jumper, and do not build nest, can guarantee that the goods appearance is very attractive in appearance.
Claims (4)
1. the device of disposing of severed thread of a Sewing machines in having the sewing machine for covering chain stitch of cutting facility, is characterized in that, the last thread end holding member that the last thread end inside the break-through cloth is remained in first pinprick is arranged between city and the shuttle.
2. the device of disposing of severed thread of Sewing machines according to claim 1 is characterized in that, the described thread end holding member of going up is made of lamellar parts and thread-like member.
3. the device of disposing of severed thread of Sewing machines according to claim 1, it is characterized in that, described cutting facility is configured in the position of needle plate bottom so that cut off in reaching the standard grade and rolling off the production line at least one at the downside of cloth, described go up the thread end holding member be configured to can wait reach the standard grade break-through first pinprick position of readiness, the holding position that keeps reaching the standard grade, avoid and these three positions of recessing the position that cutting facility takes place to disturb between move.
4. the device of disposing of severed thread of Sewing machines according to claim 1 is characterized in that, being provided with can be to the adjusting device of being adjusted by the described confining force of going up the last thread end that the thread end holding member produced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11138478A JP2000325683A (en) | 1999-05-19 | 1999-05-19 | Bird nest preventive device of sewing machine |
| JP138478/1999 | 1999-05-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1274780A CN1274780A (en) | 2000-11-29 |
| CN1143018C true CN1143018C (en) | 2004-03-24 |
Family
ID=15223019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001180460A Expired - Fee Related CN1143018C (en) | 1999-05-19 | 2000-05-19 | Device of disposing of severed thread and for sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2000325683A (en) |
| KR (1) | KR100690104B1 (en) |
| CN (1) | CN1143018C (en) |
| TW (1) | TW517120B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100377382B1 (en) * | 2000-12-30 | 2003-03-26 | 주식회사 휴먼텍스 | Thread-cutting hook device of embroidery machine |
| JP4037151B2 (en) * | 2002-04-10 | 2008-01-23 | Ｊｕｋｉ株式会社 | Upper thread holding device for sewing machine |
| JP4047624B2 (en) * | 2002-05-14 | 2008-02-13 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4235435B2 (en) | 2002-11-20 | 2009-03-11 | Ｊｕｋｉ株式会社 | Upper thread holding device of sewing machine |
| JP4030864B2 (en) * | 2002-12-10 | 2008-01-09 | Ｊｕｋｉ株式会社 | Upper thread holding device for sewing machine |
| JP2009213529A (en) * | 2008-03-07 | 2009-09-24 | Brother Ind Ltd | Needle thread holding mechanism of sewing machine |
| JP6195752B2 (en) * | 2013-07-10 | 2017-09-13 | 蛇の目ミシン工業株式会社 | Sewing machine thread holding mechanism, sewing machine threading device, and sewing machine |
| JP7092458B2 (en) * | 2016-10-31 | 2022-06-28 | 株式会社イノアックコーポレーション | How to manufacture stitched skin material |
| CN208201321U (en) * | 2018-04-02 | 2018-12-07 | 强信机械科技(莱州)有限公司 | A kind of anti-Bird's Nest device of use in sewing machine |
| CN108251987A (en) * | 2018-04-23 | 2018-07-06 | 浙江美机缝纫机有限公司 | Sewing machine removes Bird's Nest device |
| CN109537193B (en) * | 2019-01-11 | 2022-05-10 | 广东金悦来自动化设备有限公司 | Small-diameter cylinder sewing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2671478B2 (en) * | 1989-02-10 | 1997-10-29 | ブラザー工業株式会社 | Needle thread clamp device for sewing machine |
-
1999
- 1999-05-19 JP JP11138478A patent/JP2000325683A/en active Pending
-
2000
- 2000-05-18 KR KR1020000026573A patent/KR100690104B1/en not_active IP Right Cessation
- 2000-05-19 TW TW089109714A patent/TW517120B/en not_active IP Right Cessation
- 2000-05-19 CN CNB001180460A patent/CN1143018C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW517120B (en) | 2003-01-11 |
| KR20010049359A (en) | 2001-06-15 |
| JP2000325683A (en) | 2000-11-28 |
| KR100690104B1 (en) | 2007-03-08 |
| CN1274780A (en) | 2000-11-29 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20040324 |