CN201678824U - Thread cutting device of sewing machine - Google Patents
Thread cutting device of sewing machine Download PDFInfo
- Publication number
- CN201678824U CN201678824U CN2010201244246U CN201020124424U CN201678824U CN 201678824 U CN201678824 U CN 201678824U CN 2010201244246 U CN2010201244246 U CN 2010201244246U CN 201020124424 U CN201020124424 U CN 201020124424U CN 201678824 U CN201678824 U CN 201678824U
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- CN
- China
- Prior art keywords
- spacer
- sliding rail
- knife rest
- thread cutting
- spring
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- 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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Abstract
The utility model discloses a thread cutting device of a sewing machine. The thread cutting device comprises a cutter base plate, a sliding rail, a cutter rest and a swing arm, wherein a sunk part is arranged on the cutter base plate; the cutter rest is arranged in the sunk part; the sliding rail is fixedly arranged on the cutter rest; a positioning piece is also fixedly arranged on the cutter base plate; a positioning piece lateral sliding groove is arranged on the positioning piece; the tail end of the cutter rest is provided with a positioning piece sliding groove screw that is positioned in the positioning piece lateral sliding groove and can move along the positioning piece lateral sliding groove; a bracket is arranged under the extending position of the front end of the cutter rest; an ejector block is arranged at the upper front end of the bracket; the extending distance of the cutter rest can be changed by adjusting the position of the ejector block; a V-shaped spring is also fixedly arranged in the sunk part; one end of the spring is provided with a spring clamping hook, and the other end is in tight contact with the tail end of the cutter rest. Compared with the prior art, the thread cutting device has the characteristics of simple structure, convenient operation and steady as well as accurate thread cutting. Therefore, the thread cutting device can be particularly used for controlling the thread cutting length of the thread head of a tail thread on the sewing material, thereby effectively avoiding the problem of the quality as the thread heads have different lengths subsequently.
Description
Technical field
The utility model relates to the Sewing machines thread cutting device, particularly a kind of thread cutting device of controlling the end of a thread length trimming size.
Background technology
In the process of sewing, often need the buttock line on the sewing be cut by thread cutting device, all Sewing machiness all are equipped with automatic tangent apparatus at present, and this thread cutting device is when carrying out the tangent line operation after the sewing end of job, movable bearded needle on the guide rail of thread cutting device mechanism is promptly borrowed the action of external force linking swing arm and is stretched out forward, moving cutting tool stops to certain some place forward, after coil hooked, moving cutting tool begins withdrawal, in withdrawal preceding hook part and back hook part respectively with the coil that hooks toward pulling back.When moving cutting tool was withdrawn into the home position, the coil that the hooks cutting knife that is fixed cut off.And, finish the tangent line operation by intermediate plate group clamping.
But, this thread cutting device fixed cutting tool is relative with the distance of needle plate far away, can not control the length trimming size of buttock line the end of a thread on the sewing, therefore can cause the end of a thread phenomenon different in size on sewing, must in subsequent process, to cut off the end of a thread, increase operation by manually carrying out craft.
Summary of the invention
Differ for solving present Sewing machines thread cutting device institute trimming head length weak point, the problem that need manually cut, the purpose of this utility model are to provide a kind of novel Sewing machines thread cutting device.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of Sewing machines thread cutting device, include cutterhead base plate (1), sliding rail (3), knife rest (4) and swing arm (27), described cutterhead base plate (1) is provided with a depressed part (102), knife rest (4) is installed in this depressed part (102), be installed with sliding rail (3) on the described knife rest (4), also be installed with a spacer (2) on the cutterhead base plate (1), this spacer (2) is provided with spacer horizontal concrete chute (201), described knife rest (4) end is equipped with a spacer chute screw (5), this spacer chute screw (5) is arranged in spacer horizontal concrete chute (201), and can move along spacer horizontal concrete chute (201); Also be installed with one " V " shape spring (16) in the described depressed part (102), these spring (16) one ends are provided with spring trip (162), and the other end then closely contacts with knife rest (4) end.
Described " V " shape spring (16) bottom is a spring retainer plate (161), is provided with location hole of the spring (101) in the described depressed part (102), and " V " shape spring (16) is fixed on the location hole of the spring (101) by Spring screws (17).
Also be provided with the vertical chute of a spacer (202) on the described spacer (2), the vertical chute of this spacer (202) is fixed on cutterhead base plate (1) by spacer fixed screw (18).
Described sliding rail (3) bottom is provided with a sliding rail U-lag (301), and top is provided with sliding rail arc chute (303), and front and back are provided with before the sliding rail chute (304) behind the chute (302) and sliding rail.
Described swing arm (27) upper end is provided with the preceding dop (272) of swing arm, and the centre is provided with swing arm fixing hole (271), and the corresponding inlay card of dop (272) is in sliding rail U-lag (301) before the described swing arm; Swing arm (27) is passed swing arm packing ring (26) by countersunk head screw (28) and is connected with the screwed hole (103) of cutterhead base plate with above-mentioned swing arm fixing hole (271).
Described depressed part also is provided with a hole clipping in (102), and the corresponding inlay card of spring trip (162) of " V " shape spring (16) one ends is in this hole clipping.
Described sliding rail (3) front end is installed with bearded needle (14).
Described knife rest (4) front end is installed with cutting knife (19), and cutter head carriage (9) and cutting knife fixed head (23) are installed on this cutting knife (19).And knife rest front end extension bit (401) below is provided with a carriage (24), and carriage (24) top front end is equipped with jacking block (25) by screw, can change the length that knife rest stretches out by the position of adjusting jacking block (25)
The utility model flexibly connects by the spacer horizontal concrete chute of spacer chute screw with knife rest and spacer lower end, and can make the track operation of knife rest along the spacer horizontal concrete chute, simultaneously set up " V " shape spring at the knife rest end, make sliding rail when external force drive swing arm travels forward, knife rest and sliding rail first integral body under the effect of spring travels forward, making cutting knife on the knife rest put in the shortest square that needle plate arrives suture goes out cutter from the movable bearded needle setting in motion of back sliding rail and carries out trimming, and spacing effect is being erected in the jacking block tool setting that the knife rest front end is stretched on the carriage of below, be used for controlling the length that knife rest stretches out, and another effect of spring be to realize bearded needle motion puts in place and return after whole knife rest is limited, reduced the gap of the swing of knife rest.Compared with prior art, the utlity model has simple in structure, easy to operate, debugging is simple, exactly was errorless when trimming went out cutter, particularly can control the length trimming size of buttock line the end of a thread on the sewing, had effectively avoided the follow-up quality problem that causes because the end of a thread is different in size.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model swing arm and sliding rail position view.
Fig. 3 is the utility model working state schematic representation one.
Fig. 4 is the utility model working state schematic representation two.
Fig. 5 is the utility model working state schematic representation three.
Identifier declaration among the figure: cutterhead base plate 1, location hole of the spring 101, depressed part 102, screwed hole 103, spacer 2, spacer horizontal concrete chute 201, the vertical chute 202 of spacer, sliding rail 3, sliding rail U-lag 301, chute 302 before the sliding rail, sliding rail arc chute 303, chute 304 behind the sliding rail, knife rest 4, knife rest front end extension bit 401, spacer chute screw 5, set screw 6, set screw 7, set screw 8, cutter head carriage 9, compressing tablet 10, bearded needle fixed screw 11, bearded needle compressing tablet 12, bearded needle compressing tablet 13, bearded needle 14, spacer 15, " V " shape spring 16, spring retainer plate 161, spring trip 162, Spring screws 17, spacer fixed screw 18, cutting knife 19, carriage fixed screw 20, adjustable plate screw 21, adjustable plate 22, cutting knife fixed head 23, carriage 24, jacking block 25, swing arm packing ring 26, swing arm 27, swing arm fixing hole 271, dop 272 before the swing arm, countersunk head screw 28, feed dog 29.
The specific embodiment
Core concept of the present utility model is: the utility model is installed a spacer by the position of facing mutually with the knife rest end on the cutterhead base plate, this spacer front end is a spacer horizontal concrete chute, this part and cutterhead base plate overlaid, by a spacer chute screw the two activity is fixed together, knife rest is seesawed in the spacer horizontal concrete chute; In addition, increased " V " shape spring in the terminal back of knife rest, should closely contact with knife rest is terminal by " V " shape spring one end, the other end is fixed on the cutterhead base plate, travels forward thereby can utilize this " V " shape spring to make knife rest at first drive integral body when motion.Make knife rest put in the shortest square of the below gap line of needle plate from locating to carry out trimming.
For setting forth thought of the present utility model and purpose, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
See also Fig. 1, shown in Figure 2, Fig. 1 is that the utility model structural representation, Fig. 2 are the utility model swing arm and sliding rail position view.Wherein the utility model provides a kind of Sewing machines thread cutting device, include cutterhead base plate 1, sliding rail 3, knife rest 4 and swing arm 27, described cutterhead base plate 1 is provided with a depressed part 102, in this depressed part 102 knife rest 4 is installed, and described knife rest 4 ends are fixed with spacer chute screw 5.
Knife rest 4 front ends are installed with cutting knife 19, the rear end then is fixed on the cutterhead base plate 1 by spacer 2 and spacer chute screw 5, there is a carriage 24 support with it knife rest front end extension bit 401 belows, activity is installed with sliding rail 3 on the knife rest 4, these sliding rail 3 bottoms are provided with a sliding rail U-lag 301, top is provided with sliding rail arc chute 303, and front and back are provided with before the sliding rail chute 304 behind the chute 302 and sliding rail.Wherein set screw 7 is arranged in chute 304 behind the sliding rail, set screw 6 is arranged in sliding rail arc chute 303, set screw 8 is arranged in the preceding chute 302 of sliding rail, and spacer fixed screw 18 also is fixed together with spacer 15, by spacer fixed screw 18 spacer 15 is fixedly mounted on the cutterhead base plate 1.
One " V " shape spring 16 also is installed in the depressed part 102, the bottom of being somebody's turn to do " V " shape spring 16 is spring retainer plates 161, and in depressed part 102, also be provided with a location hole of the spring 101, spring retainer plate 161 is corresponding with this location hole of the spring 101, and after passing above-mentioned spring retainer plate 161 and location hole of the spring 101 by Spring screws 17, " V " shape spring 16 is fixedly mounted in the depressed part 102.In addition, " V " shape spring 16 1 ends are spring trip 162, this spring trip 162 is fixedly in the hole of inlay card in depressed part 102, the other end of " V " shape spring 16 then closely contacts with the terminal of knife rest 4, here " V " shape spring 16 all is in the depressed part 102 with knife rest 4, and the two is to be in the same horizontal plane, and " V " shape spring 16 then can be subjected to the extruding generation elastic deformation of knife rest 4.
Activity is installed with sliding rail 3 on the knife rest 4, the front end of this sliding rail 3 is installed with bearded needle 14, this bearded needle 14 is by bearded needle compressing tablet 12,13 clampings of bearded needle compressing tablet, and make this bearded needle 14 between the cutter head carriage 9 and cutting knife 19 on the knife rest 4, and can seesaw along the position between the two.
Knife rest 4 front ends also are provided with cutting knife fixed head 23, by this cutting knife fixed head 23 bearded needle compressing tablet 12, bearded needle compressing tablet 13 are fixedly mounted on the knife rest 4, and knife rest 4 also is installed with compressing tablet 10 in addition, and compressing tablet 10 is fixed on the knife rest 4 by bearded needle fixed screw 11.
By the energising and the outage of electromagnet, swing arm is swung, thereby drive sliding rail 3 front and back motion on knife rest 4, thereby the bearded needle 14 that is installed in sliding rail 3 front ends is seesawed, realization is ticked the end of a thread and is cut off.
As shown in Figure 3, Fig. 3 is the utility model working state schematic representation one.Under the electromagnet effect, swing arm 27 travels forward with the electromagnet junction, with the then motion backward of sliding rail 3 junctions, this moment, the end of knife rest 4 pushed " V " shape spring 16, make it that elastic deformation take place, and under the effect of " ⊥ " shape spacer 2 horizontal direction spacer horizontal concrete chutes 201, keeping whole knife rest 4 to be in the return state, bearded needle 14 that corresponding sliding rail 3 front ends are installed and the cutting knife 19 on the knife rest 4 are avoided bearded needle and the feed dog 29 on the Sewing machines.
As shown in Figure 4, Fig. 4 is the utility model working state schematic representation two.Under the electromagnet effect, swing arm 27 is moved backward with the electromagnet junction, then travel forward with sliding rail 3 junctions, this moment knife rest 4 ends " V " shape spring 16, discharge elastic deformation gradually, thereby drive sliding rail 3 and knife rest 4 horizontal movements forward simultaneously, when knife rest 4 front end extension bit 401 run to Sewing machines on 4 on jacking block 25 place's knife rests on the fixing carriage 24 stop to travel forward, the cutting knife 19 on this moment knife rest 4 enters among the feed dog 29." V " shape spring 16 of knife rest 4 ends discharges elastic deformation fully at this moment.
As shown in Figure 5, Fig. 5 is the utility model working state schematic representation three.Under the electromagnet effect, swing arm 27 moves forward with the electromagnet junction, and with the then motion backward of sliding rail 3 junctions, thereby the bearded needle 14 that sliding rail 3 and front end are installed moves forward, and bearded needle 14 passes feed dog 29.Excessive thread ends is caught on, electromagnet outage this moment, bearded needle 14 is ticked the end of a thread, by cutting knife 19 the end of a thread is cut off.
The utility model has been realized the length trimming size of buttock line the end of a thread on the sewing is controlled, and has effectively avoided the follow-up quality problem that causes because the end of a thread is different in size.
More than Sewing machines thread cutting device provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. Sewing machines thread cutting device, include cutterhead base plate (1), sliding rail (3), knife rest (4) and swing arm (27), described cutterhead base plate (1) is provided with a depressed part (102), knife rest (4) is installed in this depressed part (102), be installed with sliding rail (3) on the described knife rest (4), it is characterized in that also being installed with on the cutterhead base plate (1) spacer (2), this spacer (2) is provided with spacer horizontal concrete chute (201), described knife rest (4) end is equipped with a spacer chute screw (5), this spacer chute screw (5) is arranged in spacer horizontal concrete chute (201), and can move along spacer horizontal concrete chute (201); And knife rest front end extension bit (401) below is provided with a carriage (24), carriage (24) top front end is equipped with jacking block (25) by screw, can change the length that knife rest stretches out by the position of adjusting jacking block (25), also be installed with one " V " shape spring (16) in the described depressed part (102), these spring (16) one ends are provided with spring trip (162), and the other end then closely contacts with knife rest (4) end.
2. Sewing machines thread cutting device according to claim 1, it is characterized in that described " V " shape spring (16) bottom is a spring retainer plate (161), be provided with location hole of the spring (101) in the described depressed part (102), " V " shape spring (16) is fixed on the location hole of the spring (101) by Spring screws (17).
3. Sewing machines thread cutting device according to claim 1 is characterized in that also being provided with the vertical chute of a spacer (202) on the described spacer (2), and the vertical chute of this spacer (202) is fixed on cutterhead base plate (1) by spacer fixed screw (18).
4. Sewing machines thread cutting device according to claim 1, it is characterized in that described sliding rail (3) bottom is provided with a sliding rail U-lag (301), top is provided with sliding rail arc chute (303), and front and back are provided with before the sliding rail chute (304) behind the chute (302) and sliding rail.
5. according to claim 1 or 4 described Sewing machines thread cutting devices, it is characterized in that described swing arm (27) upper end is provided with the preceding dop (272) of swing arm, the centre is provided with swing arm fixing hole (271), and the corresponding inlay card of dop (272) is in sliding rail U-lag (301) before the described swing arm; Swing arm (27) is passed swing arm packing ring (26) by countersunk head screw (28) and is connected with the screwed hole (103) of cutterhead base plate with above-mentioned swing arm fixing hole (271).
6. Sewing machines thread cutting device according to claim 1 is characterized in that also being provided with a hole clipping in the described depressed part (102), and the corresponding inlay card of spring trip (162) of " V " shape spring (16) one ends is in this hole clipping.
7. Sewing machines thread cutting device according to claim 1 is characterized in that described sliding rail (3) front end is installed with bearded needle (14).
8. Sewing machines thread cutting device according to claim 1 is characterized in that described knife rest (4) front end is installed with cutting knife (19), is equipped with cutter head carriage (9) and cutting knife fixed head (23) on this cutting knife (19).
9. according to claim 1 described Sewing machines thread cutting device, it is characterized in that described knife rest front end extension bit (401) below is provided with a carriage (24), the top of this carriage is equipped with jacking block (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201244246U CN201678824U (en) | 2010-03-03 | 2010-03-03 | Thread cutting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201244246U CN201678824U (en) | 2010-03-03 | 2010-03-03 | Thread cutting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201678824U true CN201678824U (en) | 2010-12-22 |
Family
ID=43343876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201244246U Expired - Fee Related CN201678824U (en) | 2010-03-03 | 2010-03-03 | Thread cutting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201678824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952867A (en) * | 2014-04-22 | 2014-07-30 | 天津市中马骏腾精密机械制造有限公司 | Universal line cutting device for sewing machine |
| CN107401004A (en) * | 2017-08-11 | 2017-11-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine trimming cutterhead |
-
2010
- 2010-03-03 CN CN2010201244246U patent/CN201678824U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952867A (en) * | 2014-04-22 | 2014-07-30 | 天津市中马骏腾精密机械制造有限公司 | Universal line cutting device for sewing machine |
| CN103952867B (en) * | 2014-04-22 | 2016-04-20 | 天津市中马骏腾精密机械制造有限公司 | Universal sewing machine line cutting device |
| CN107401004A (en) * | 2017-08-11 | 2017-11-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine trimming cutterhead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20190303 |