CN207567454U - A kind of thread shearing device of sewing machine of Improvement type - Google Patents
A kind of thread shearing device of sewing machine of Improvement type Download PDFInfo
- Publication number
- CN207567454U CN207567454U CN201721357088.8U CN201721357088U CN207567454U CN 207567454 U CN207567454 U CN 207567454U CN 201721357088 U CN201721357088 U CN 201721357088U CN 207567454 U CN207567454 U CN 207567454U
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- knife bar
- sewing machine
- blade
- bottom plate
- improvement type
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Abstract
The utility model is related to the art fields of thread cutting mechanism of sewing machine, refer in particular to a kind of thread shearing device of sewing machine of Improvement type, including bottom plate, the knife bar that is slideably positioned in bottom plate, the hooking blade for tempting sewing thread, the trimming blade for cutting sewing thread, the cursor that slides for trigger shaft and the first guide pad for guiding knife bar displacement, the cursor is articulated with bottom plate, and first guide pad is set to bottom plate；One end of the hooking blade is fixedly connected with knife bar, and the one end of hooking blade far from knife bar is equipped with the first blade portion and the second blade portion of the first blade portion side is connected to towards knife bar direction；The knife bar is provided with the baseline tensioning member for stretching sewing baseline.The utility model is simple and compact for structure, effectively improves the production efficiency of sewing machine and reduces the labor intensity of labourer.
Description
Technical field
The utility model is related to the technical fields of thread cutting mechanism of sewing machine, refer in particular to a kind of sewing machine trimming of Improvement type
Device.
Background technology
In sewing process is carried out, it is often necessary to the buttock line on sewing is cut by cutting facility, it is all at present
Sewing machine be equipped with automatic thread trimming device, and this cutting facility is when carrying out tangent line operation after sewing operation, trimming
The movable bearded needle of equipment mechanism forward extends out under the driving of linking swing arm, and moving cutting tool, which is arrived forward at certain point, to be stopped, by line
After circle is caught on, moving cutting tool starts to retract, and preceding hook part and back hook part respectively pull back the coil caught on while retracting.When
When moving cutting tool is retracted into home position, the coil caught on is cut off by fixed cutting tool.And clamped by intermediate plate group, complete tangent line and make
Industry.
But this cutting facility on sewing buttock line cut after, due to the sewing baseline in sewing thread be from
Baseline spool is stretched to the baseline suture needle of sewing machine, and baseline is in stretched taut, therefore, baseline when cloth is sewed
Rebound is generated in its tensioned state of the abrupt release cut by cutting facility, baseline is detached from by the effect of screen resilience at this time
Go out the baseline suture needle of sewing machine, cause after each cloth sewed, sewing machine user is required for wearing baseline into back seam again
The baseline suture needle of machine of threading could again sew to cloth.Drawbacks described above not only increases the labour degree of fatigue of labourer,
And the production efficiency of sewing machine is greatly reduced, defect is fairly obvious, and there is an urgent need for a solution.
Invention content
The purpose of this utility model is that providing in view of the deficiencies of the prior art, one kind is simple and compact for structure, and bottom can be made by having
Line does not drop out the baseline tensioning member of baseline suture needle when cutting facility completes trimming operation, so as to improve sewing machine production efficiency and
Reduce the Improvement type thread shearing device of sewing machine of labor intensity.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
A kind of thread shearing device of sewing machine of Improvement type provided by the utility model, including bottom plate, is slideably positioned in bottom plate
Knife bar, the hooking blade for tempting sewing thread, the rotation for cutting the trimming blade of sewing thread, being slided for trigger shaft
Arm and the first guide pad for guiding knife bar displacement, the cursor are articulated with bottom plate, and first guide pad is set to
Bottom plate；One end of the hooking blade is fixedly connected with knife bar, the one end of hooking blade far from knife bar be equipped with the first blade portion and
The second blade portion of the first blade portion side is connected to towards knife bar direction；The knife bar is provided with the bottom for stretching sewing baseline
Line tensioning member.
Therein, the knife bar includes the sliding part being slidably connected with bottom plate and the projection for stretching out bottom plate, the hook
Line blade and the baseline tensioning member are fixedly connected with the projection in knife bar.
Further, the sliding part of the knife bar is equipped with positioning bolt and sliding groove, and the positioning bolt passes through sliding groove
It is connected to bottom plate.
Further, the sliding groove includes straightway and the bending section by the extension of straightway one end and bending.
Therein, first guide pad is equipped with is arranged in knife bar with the matched knife bar guide groove of knife bar, the knife bar
Guide groove.
Further, the bottom plate is equipped with long gain, and the long gain slip is provided with sliding shoe, first guide pad
It is articulated with sliding shoe.
Further, the thread shearing device of sewing machine of Improvement type further includes fixed block, and one end of the fixed block is led with first
It is fixedly connected to block, the free end of fixed block protrudes into the projection of knife bar, and the trimming blade is connected to the freedom of fixed block
End.
Further, cushion block is equipped between the trimming blade and fixed block, the cushion block is equipped with and hooking blade phase
The blade guide groove of cooperation.
Further, the free end of the fixed block is connected with the first shrapnel, the second shrapnel and pressure bullet block, and described the
The free end of one shrapnel is contradicted with hooking blade, and second shrapnel and pressure bullet block contact at the positive and anti-of the first shrapnel respectively
Face.
Therein, the baseline tensioning member is equipped with the threading hole interted for baseline of sewing.
The beneficial effects of the utility model：
A kind of thread shearing device of sewing machine of Improvement type provided by the utility model, when cloth is completed to sew, cutting facility
Cursor generate and rotate clockwise under the driving of external force, the rotating clockwise of cursor drives knife bar along bottom plate towards hooking
The direction movement of line blade, the mobile driving hooking blade of knife bar pass through the sewing thread of cloth, and then, cursor is in the drive of external force
Dynamic lower generate rotates counterclockwise, and rotating counterclockwise for cursor drives back moving for knife bar, and the back mobile driving of knife bar hooks
Line blade back moves, and back moving for hooking blade makes the first blade portion and the second blade portion respectively by the bottom in sewing thread
Line and upper thread catch on and are moved to trimming blade and cut；When knife bar is moved towards hooking insert orientation, described in knife bar drive
Baseline tensioning member is mobile simultaneously, and baseline can be pulled out a distance from spool, discharge baseline by the mobile of the baseline tensioning member
The phenomenon that tensioned state, so as to be cut baseline when are not in rebound, avoiding can be from baseline suture needle after baseline is cut
The problem of middle disengaging, occurs.The utility model is simple and compact for structure, effectively improves the production efficiency of sewing machine and reduces and works
The labor intensity of person.
Description of the drawings
Fig. 1 is the structural decomposition diagram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the structure diagram of first guide pad of the utility model.
Reference sign
1- bottom plates；11- hooking blades；The first blade portions of 111-；The second blade portions of 112-；12- knife bars；121- sliding parts；
122- projections；123- sliding grooves；1231- straightways；1232- bending sections；13- trimming blades；The first guide pads of 14-；141-
Knife bar guide groove；15- cursors；16- baseline tensioning members；161- threading holes；17- fixed blocks；18- cushion blocks；19- blades are oriented to
Slot；The first shrapnels of 20-；The second shrapnels of 21-；22- presses bullet block；23- positioning bolts；31- long gains；32- sliding shoes.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.The utility model is carried out below in conjunction with attached drawing
Detailed description.
As shown in Figure 1 to Figure 3, the thread shearing device of sewing machine of a kind of Improvement type provided by the utility model, including bottom plate 1,
It is slideably positioned in the knife bar 12, the hooking blade 11 for tempting sewing thread, the trimming blade for cutting sewing thread of bottom plate 1
13rd, the first guide pad 14 for the cursor 15 of the slip of trigger shaft 12 and for guiding 12 displacement of knife bar, the rotation
Arm 15 is articulated with bottom plate 1, and first guide pad 14 is set to bottom plate 1；One end of the hooking blade 11 is fixed with knife bar 12
Connection, the one end of hooking blade 11 far from knife bar 12 are equipped with the first blade portion 111 and are connected to first edge of a knife towards 12 direction of knife bar
Second blade portion 112 of 111 side of portion；The knife bar 12 is provided with the baseline tensioning member 16 for stretching sewing baseline.
In practical applications, when cloth is completed to sew, the cursor 15 of cutting facility generates suitable under the driving of external force
Hour hands rotate, and rotating clockwise for cursor 15 drives knife bar 12 to be moved along the direction of bottom plate 1 towards hooking blade 11, knife bar
12 the first guide pad 14 lead move down and drive hooking blade 11 pass through cloth sewing thread, then, cursor 15 exists
It generates and rotates counterclockwise under the driving of external force, rotating counterclockwise for cursor 15 drives back moving for knife bar 12, knife bar 12
Back moving for driving hooking blade 11 is back moved, the back movement of hooking blade 11 makes the first blade portion 111 and the second knife
Baseline in sewing thread and upper thread are caught on and are moved to trimming blade 13 and cut by oral area 112 respectively；In knife bar 12 towards hook
When 11 direction of line blade is moved, knife bar 12 drives the baseline tensioning member 16 while mobile, the movement of the baseline tensioning member 16
Baseline can be pulled out a distance from spool, baseline is made to discharge tensioned state, so as to be not in rebound when being cut baseline
The phenomenon that, it avoids and occurs the problem of being detached from from baseline suture needle after baseline is cut.The utility model is simple and compact for structure,
It effectively improves the production efficiency of sewing machine and reduces the labor intensity of labourer.As preference, the rotation of cursor 15 can
Driven with power-off by the energization of electromagnet using electromagnetic drive mechanism.
In the technical program, referring to Fig. 2, the knife bar 12 includes the sliding part 121 being slidably connected with bottom plate 1 and projection
Go out the projection 122 of bottom plate 1, the hooking blade 11 and the baseline tensioning member 16 are fixedly connected in the projection of knife bar 12
122.As preference, the sliding part 121 of the knife bar 12 is equipped with positioning bolt 23 and sliding groove 123, the positioning bolt 23
Bottom plate 1 is connected to across sliding groove 123, knife bar 12 and bottom plate 1 are slidably connected, so as to enable the sliding part 121 of knife bar 12
It is enough to be slided in the range of sliding groove 123；The sliding groove 123 includes straightway 1231 and is extended simultaneously by 1231 one end of straightway
The bending section 1232 of bending.
In practical applications, since the cutting facility of sewing machine is installed between the presser feet of sewing machine and baseline suture needle,
In order to which hooking blade 11 is made not generate interference with presser feet when cloth is sewed, therefore, the design of sliding groove 123 of knife bar 12 is in line
Section 1231 and bending section 1232 can make knife bar 12 that hooking blade 11 be driven to rotate when knife bar 12 is moved to bending section 1232 and move
Go out the space of cloth sewing, can make knife bar 12 that hooking blade 11 be driven to rotate shift-in when knife bar 12 is moved to straightway 1231
The space of cloth sewing carries out hooking and trimming.
In the technical program, referring to Fig. 3, first guide pad 14 is equipped with and 12 matched knife bar guide groove of knife bar
141, the knife bar 12 is arranged in knife bar guide groove 141.As preference, the bottom plate 1 is equipped with long gain 31, the long gain
31 slips are provided with sliding shoe 32, and first guide pad 14 is articulated with sliding shoe 32.At work, when the sliding part of knife bar 12
During 121 movement bending section 1232, knife bar 12 can be rotated around the first guide pad 14, while sliding shoe 32 moves in long gain 31
It is dynamic, so that knife bar 12 can stablize the space for swimmingly hooking blade 11 being driven to rotate and removing cloth sewing.
In the technical program, the thread shearing device of sewing machine of Improvement type further includes fixed block 17, and the one of the fixed block 17
End is fixedly connected with the first guide pad 14, and the free end of fixed block 17 protrudes into the projection 122 of knife bar 12, the trimming blade
13 are connected to the free end of fixed block 17.As preference, cushion block 18, institute are equipped between the trimming blade 13 and fixed block 17
State cushion block 18 be equipped with 11 matched blade guide groove 19 of hooking blade, the design of blade guide groove 19 is so that hooking blade 11
It can steadily move.
In the technical program, the free end of the fixed block 17 is connected with the first shrapnel 20, the second shrapnel 21 and pressure
Bullet block 22, free end and the hooking blade 11 of first shrapnel 20 contradict, and second shrapnel 21 and pressure bullet block 22 support respectively
It touches in the front of the first shrapnel 20 and reverse side, the design of the structure can enable hooking blade 11 in trimming blade 13 and cushion block
It is steadily moved between 18.
In the technical program, the baseline tensioning member 16 is equipped with the threading hole 211 interted for baseline of sewing, in order to
Baseline is worn across threading hole 211 on line suture needle on earth again.
The above is only the utility model preferred embodiment, and not the utility model is made in any form
Limitation, although the utility model is disclosed as above with preferred embodiment, is not limited to the utility model, any to be familiar with sheet
Technical professional is not being departed from the range of technical solutions of the utility model, is made when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, as long as being without departing from the content of the technical scheme of the utility model, foundation
The utility model technology refers to any simple modification, equivalent change and modification made to above example, belongs to this practicality
In the range of new technique scheme.
Claims (10)
1. a kind of thread shearing device of sewing machine of Improvement type, it is characterised in that：Including bottom plate (1), it is slideably positioned in the knife of bottom plate (1)
Bar (12), for tempt sewing thread hooking blade (11), for cut sewing thread trimming blade (13), for trigger shaft
(12) cursor (15) slided and the first guide pad (14) for guiding knife bar (12) displacement, cursor (15) hinge
Bottom plate (1) is connected to, first guide pad (14) is set to bottom plate (1)；One end of the hooking blade (11) and knife bar (12)
It is fixedly connected, the one end of hooking blade (11) far from knife bar (12) is equipped with the first blade portion (111) and connects towards knife bar (12) direction
It is connected to second blade portion (112) of the first blade portion (111) side；The knife bar (12) is provided with to stretch sewing baseline
Baseline tensioning member (16).
2. a kind of thread shearing device of sewing machine of Improvement type according to claim 1, it is characterised in that：Knife bar (12) packet
Include the sliding part (121) being slidably connected with bottom plate (1) and the projection (122) for stretching out bottom plate (1), the hooking blade (11)
The projection (122) in knife bar (12) is fixedly connected with the baseline tensioning member (16).
3. a kind of thread shearing device of sewing machine of Improvement type according to claim 2, it is characterised in that：The knife bar (12)
Sliding part (121) is connected equipped with positioning bolt (23) and sliding groove (123), the positioning bolt (23) across sliding groove (123)
In bottom plate (1).
4. a kind of thread shearing device of sewing machine of Improvement type according to claim 3, it is characterised in that：The sliding groove
(123) bending section (1232) including straightway (1231) and by the extension of straightway (1231) one end and bending.
5. a kind of thread shearing device of sewing machine of Improvement type according to claim 1, it is characterised in that：First guide pad
(14) equipped with knife bar guide groove (141) matched with knife bar (12), the knife bar (12) is arranged in knife bar guide groove (141).
6. a kind of thread shearing device of sewing machine of Improvement type according to claim 1, it is characterised in that：The bottom plate (1) sets
There is long gain (31), the long gain (31) is slided and is provided with sliding shoe (32), and first guide pad (14) is articulated with slip
Block (32).
7. a kind of thread shearing device of sewing machine of Improvement type according to claim 2, it is characterised in that：The sewing machine of Improvement type
Cutting facility further includes fixed block (17), and one end of the fixed block (17) is fixedly connected with the first guide pad (14), fixed block
(17) free end protrudes into the projection (122) of knife bar (12), and the trimming blade (13) is connected to oneself of fixed block (17)
By holding.
8. a kind of thread shearing device of sewing machine of Improvement type according to claim 7, it is characterised in that：The trimming blade
(13) cushion block (18) is equipped between fixed block (17), the cushion block (18) with hooking blade (11) matched blade equipped with leading
To slot (19).
9. a kind of thread shearing device of sewing machine of Improvement type according to claim 8, it is characterised in that：The fixed block (17)
Free end be connected with the first shrapnel (20), the second shrapnel (21) and pressure bullet block (22), the freedom of first shrapnel (20)
End and hooking blade (11) conflict, second shrapnel (21) and pressure bullet block (22) contact at the front of the first shrapnel (20) respectively
With reverse side.
10. a kind of thread shearing device of sewing machine of Improvement type according to claim 1, it is characterised in that：The baseline stretches
Part (16) is equipped with the threading hole (211) interted for baseline of sewing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357088.8U CN207567454U (en) | 2017-10-18 | 2017-10-18 | A kind of thread shearing device of sewing machine of Improvement type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357088.8U CN207567454U (en) | 2017-10-18 | 2017-10-18 | A kind of thread shearing device of sewing machine of Improvement type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207567454U true CN207567454U (en) | 2018-07-03 |
Family
ID=62695825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721357088.8U Active CN207567454U (en) | 2017-10-18 | 2017-10-18 | A kind of thread shearing device of sewing machine of Improvement type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207567454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565286A (en) * | 2019-09-16 | 2019-12-13 | 杰克缝纫机股份有限公司 | Trimming transmission mechanism and sewing machine with trimming transmission mechanism |
-
2017
- 2017-10-18 CN CN201721357088.8U patent/CN207567454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565286A (en) * | 2019-09-16 | 2019-12-13 | 杰克缝纫机股份有限公司 | Trimming transmission mechanism and sewing machine with trimming transmission mechanism |
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