CN107893290A - A kind of thread cutting mechanism and sewing machine - Google Patents
A kind of thread cutting mechanism and sewing machine Download PDFInfo
- Publication number
- CN107893290A CN107893290A CN201711452345.0A CN201711452345A CN107893290A CN 107893290 A CN107893290 A CN 107893290A CN 201711452345 A CN201711452345 A CN 201711452345A CN 107893290 A CN107893290 A CN 107893290A
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- Prior art keywords
- knife
- cutting mechanism
- screw
- trimming
- tool rest
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a kind of thread cutting mechanism, the suture in needle part is connected for cutting, the needle part is provided with the cable-through hole passed through for suture, the thread cutting mechanism includes solid tool rest, the stationary knife on solid tool rest and the moving knife being movably mounted on solid tool rest, the moving knife can move in the direction of cable-through hole on closer or far from needle part, the one end of the moving knife away from solid tool rest has hooking portion, the hooking portion is used to catch on the suture in cable-through hole passed through from needle part, the moving knife can engage with stationary knife, carry out cutting out for decorative thread.The application can be cut the suture in cable-through hole by coordinating for moving knife and stationary knife, effectively realize trimming function, and thread cutting mechanism overall structure is simply easily realized, take that the operating space of sewing machine is few, disclosure satisfy that the demand of client.
Description
Technical field
The present invention relates to a kind of thread cutting mechanism.
The invention further relates to a kind of sewing machine for including above-mentioned thread cutting mechanism.
Background technology
At present, left thread cutting mechanism is equipped with sewing machine, the dress in feed tip is connected for being cut after sewing terminates
Ornamental thread.But existing left thread cutting mechanism complicated integral structure, operating space is taken, and inconvenience is adjusted, cause fabric to adapt to
Property it is wideless, thread trimmer is needed to readjust when thin material and thick material trimming, therefore existing left thread cutting mechanism practicality is not strong, not
Can meet the needs of client.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of simple trimming of overall structure
Mechanism.
To achieve the above object, the present invention provides a kind of thread cutting mechanism, and the suture in needle part, institute are connected for cutting
State needle part and be provided with the cable-through hole passed through for suture, the thread cutting mechanism include solid tool rest, the stationary knife on solid tool rest,
And be movably mounted at the moving knife on solid tool rest, the moving knife can on closer or far from needle part cable-through hole direction
Mobile, the one end of the moving knife away from solid tool rest has hooking portion, and the hooking portion is used to catch on from needle part in cable-through hole
The suture passed through, the moving knife can engage with stationary knife.
Preferably, the needle part is the feed tip in sewing machine, and the cable-through hole is located on the upper surface of feed tip；It is described solid
Tool rest is arranged in sewing machine case in the side wall of chain-drive section and positioned at the top of feed tip.
Further, the solid tool rest includes being used for and sewing machine case is mutually fixed fixed plate, it is connected with fixed plate
Adjustable plate and the installing plate that is connected with adjustable plate, the adjustable plate can be rotated relative to fixed plate, the installing plate
It can be moved relative to adjustable plate, the stationary knife is fixed on installing plate, and the moving knife is slidably mounted on installing plate.
Preferably, the adjustable plate has a first connecting portion, and the first connecting portion of the fixed plate and adjustable plate passes through
One axial screw is hinged and is connected by the first screw, and an arc groove, the arc groove are offered in the fixed plate
Using the center of the first axial screw as the center of circle, first screw is located in arc groove.
Preferably, the adjustable plate has second connecting portion, and the second connecting portion of the installing plate and adjustable plate passes through
Two screws are connected, and kidney slot is offered in the second connecting portion, and second screw is located in kidney slot.
Further, the two panels thread tension disc being oppositely arranged is installed on the solid tool rest, between two panels thread tension disc formed with
The clamp groove being open towards cable-through hole on needle part, the clamp groove are located at the side of moving knife and stationary knife engagement place.
Further, in addition to adjustment sheet, the adjustment sheet is installed on solid tool rest by the 3rd screw, on the adjustment sheet
With regulation feeler, the regulation feeler abuts against with a piece of thread tension disc in two panels thread tension disc；It is also connected with the solid tool rest
Have an adjusting screw, the adjusting screw coordinates with adjustment sheet screw thread, when turning adjusting screw, can change two panels thread tension disc it
Between clamping force.
Preferably, in two panels thread tension disc, the thickness close to a piece of thread tension disc of moving knife and stationary knife engagement place is less than away from dynamic
The thickness of knife and another thread tension disc of stationary knife engagement place.
Further, trimming driving source and trimming drive component, the trimming driving source tool are installed on the solid tool rest
There is rotatable trimming drive division, the trimming drive division is connected with the other end of moving knife by trimming drive component, driven
Moving knife moves；It is trimming crank that the trimming drive component includes mutually fixing with trimming drive division one end, bent for being hinged trimming
Second axial screw of handle and moving knife, the guide groove for being opened on solid tool rest and being engaged with moving knife and be opened in trimming song
The chute of the handle other end, moving direction extension of the guide groove along moving knife, second axial screw are located in chute, simultaneously
It can be moved in chute along the bearing of trend of chute.
Further, knife locating part is installed out on the solid tool rest and returns knife locating part, the trimming crank can be with
Go out knife locating part and return knife locating part to abut against.
Preferably, it is described go out knife locating part include eccentric bushing and the 4th screw, the eccentric bushing is installed by the 4th screw
In solid tool rest, the center of the eccentric bushing and the center eccentric setting of the 4th screw, the trimming crank can be with eccentric bushing
Outer peripheral face abuts against.
The present invention also provides a kind of sewing machine, and thread cutting mechanism as described above is provided with the sewing machine.
As described above, thread cutting mechanism of the present invention and sewing machine, have the advantages that：
The application can be cut the suture in cable-through hole by moving knife and coordinating for stationary knife, effectively realize trimming function,
And thread cutting mechanism overall structure is simply easily realized, take that the operating space of sewing machine is few, disclosure satisfy that the demand of client.
Brief description of the drawings
Fig. 1 is the structural representation of sewing machine in the application.
The A that Fig. 2 is Fig. 1 encloses enlarged drawing.
Fig. 3 to Fig. 7 is structural representation of the thread cutting mechanism under different visual angles in the application.
Fig. 8 is the connection diagram between trimming driving source, trimming drive component and moving knife in the application.
Fig. 9 is the connection diagram between installing plate, trimming crank and moving knife in the application.
Figure 10 and Figure 11 is structural representation of the trimming crank under different visual angles in the application.
Component label instructions
1 casing
101 main body sections
102 chain-drive sections
103 drive end units
2 feed tips
21 cable-through holes
3 feed tips are small to cross line plate
4 feed tips cross line plate
5 solid tool rests
51 fixed plates
511 arc grooves
52 adjustable plates
521 first connecting portions
522 second connecting portions
523 kidney slots
53 installing plates
532 guide grooves
54 first axial screws
55 first screws
56 second screws
6 stationary knifes
7 moving knife
71 hooking portions
8 thread tension discs
81 thin thread tension discs
82 thick thread tension discs
9 adjustment sheets
91 regulation feelers
10 the 3rd screws
11 adjusting screws
12 trimming driving sources
121 trimming drive divisions
13 trimming cranks
131 chutes
132 crank connecting portions
14 second axial screws
15 bolts
16 nuts
17 go out knife locating part
171 eccentric bushings
172 the 4th screws
18 times knife locating parts
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size etc. that this specification accompanying drawing is painted, only coordinating in disclosed in specification
Hold, so that those skilled in the art understands and reads, be not limited to the enforceable qualifications of the present invention, therefore do not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size, it can be produced not influenceing the present invention
Under the effect of raw and the purpose that can reach, all should still it fall in the range of disclosed technology contents can be covered.Together
When, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one ", it is merely convenient to chat
State clearly, and be not used to limit the enforceable scope of the present invention, its relativeness is altered or modified, and technology is being changed without essence
Inside hold, when being also considered as the enforceable category of the present invention.
In following examples, all directions are defined as follows：The feed direction of sewing machine is defined as front direction, it is therefore, preceding
Rear to the width for sewing machine, and front direction for sewing when sewing machine backwards to the direction of operative employee, rear is to for sewing
When sewing machine oriented manipulation work direction；Left and right directions is the length direction of sewing machine, and left direction is towards head of sewing machine
Direction, right direction is towards the direction of sewing machine tail；Above-below direction is the short transverse of sewing machine.
The application provides a kind of thread cutting mechanism and is provided with the sewing machine of the thread cutting mechanism, structure such as Fig. 1 of sewing machine
Shown in Fig. 2, sewing machine has casing 1, needle part, excessively presser feet, the component such as line plate, wherein, the casing 1 includes left and right and extended
Main body section 101 and be respectively provided at the chain-drive section 102 and drive end unit 103 of the left and right ends of main body section 101；The needle part tool
There is feed tip 2, there is the line plate excessively feed tip small line plate 3 and feed tip excessively to cross line plate 4, and the upper surface of feed tip 2, which is provided with, supplies decorative thread
The cable-through hole 21 passed through, cable-through hole 21 are the notch being located on the upper surface of feed tip 2.The thread cutting mechanism that the application is related to is used to cut
Connect the suture in needle part, especially suitable for cutting the decorative thread passed through from the cable-through hole 21 of the upper surface of feed tip 2；When cutting
When line mechanism connects the decorative thread in feed tip 2 for cutting, thread cutting mechanism forms the left thread cutting mechanism of sewing machine, and thread trimmer
Structure integral installation is in sewing machine case 1 on the left side wall of chain-drive section 102 and positioned at the top of feed tip 2.
Further, as shown in figure 3, the thread cutting mechanism includes solid tool rest 5, is fixed by screws in the solid left side of tool rest 5
Stationary knife 6 on face and the moving knife 7 being movably mounted on the solid left surface of tool rest 5, the moving knife 7 are located at the upper of feed tip 2
Square and moving knife 7 can move in the direction of cable-through hole 21 on closer or far from feed tip 2, and the moving knife 7 is away under solid tool rest 5
End has hooking portion 71, and the hooking portion 71 is used to catch on the decorative thread passed through from the cable-through hole 21 on the upper surface of feed tip 2, institute
Stating moving knife 7 can engage with stationary knife 6.The solid tool rest 5 is arranged on the left side wall of chain-drive section 102, so as to which thread cutting mechanism is whole
Body is arranged on the left side wall of chain-drive section 102.In an initial condition, moving knife 7 is away from the mistake on the upper surface of feed tip 2 to thread cutting mechanism
String holes 21 and the top for being located at feed tip 2；After sewing terminates and when needing trimming, then moving knife 7 moves to close to the direction of feed tip 2
It is dynamic, until the hooking portion 71 of the lower end of moving knife 7 is moved in the cable-through hole 21 of feed tip 2, as shown in Fig. 2 then hooking portion 71 catch on from
The decorative thread passed through in cable-through hole 21；Afterwards, moving knife 7 drives decorative thread to the direction away from feed tip 2 and close to the direction of stationary knife 6
Move, until being meshed with stationary knife 6, so as to which decorative thread be cut, while also achieve the reset of moving knife 7.Therefore, the application is led to
The suture in cable-through hole 21 can be cut by crossing moving knife 7 and coordinating for stationary knife 6, effectively realize trimming function；Especially, thread trimmer
Structure overall structure is simply easily realized, reduces volume, the liberation operating space of thread cutting mechanism so that the operating space of sewing machine is more
Rationally, operating efficiency is improved；Also, the top that thread cutting mechanism is arranged on to feed tip 2 carries out trimming, and it can be applied to thin and thick
Material, it is artificial so as to reduce the step of needing to readjust thread cutting mechanism position when sewing the sewing of different-thickness so as to remove from
Regulating step so that thread cutting mechanism is more stable, lifts the versatility of thread cutting mechanism, disclosure satisfy that the demand of client.
Further, the preferred structure of the solid tool rest 5 is：As shown in Fig. 3 to Fig. 7, the solid tool rest 5 includes fixed plate
51st, the adjustable plate 52 being connected with fixed plate 51 and the installing plate 53 being connected with adjustable plate 52, the fixed plate 51 pass through
Screw is fixedly mounted in casing 1 on the left side wall of chain-drive section 102, and the adjustable plate 52 can be around fixation relative to fixed plate 51
Rotating fulcrum rotates, and the installing plate 53 can move relative to adjustable plate 52, and the stationary knife 6 is fixed on installing plate 53, described
Moving knife 7 is slidably mounted on installing plate 53.Therefore, the and of moving knife 7 can be adjusted by rotating adjustable plate 52, moving installing plate 53
The position of stationary knife 6 and moving knife 7 and the position of the engagement place of stationary knife 6, and adjustable extent is big so that thread cutting mechanism and sewing function
The change of sewing thickness is enough better adapted to, remains good stitching.
Preferably, the attachment structure between the fixed plate 51 and adjustable plate 52 is：As shown in figure 4, the adjustable plate 52
Upper end there is horizontal-extending first connecting portion 521, the first connecting portion 521 of the fixed plate 51 and adjustable plate 52 is by upper
First axial screw 54 of lower extension is hinged and the first screw 55 by extending up and down is connected, the fixed plate 51
On offer an arc groove 511, the arc groove 511 is using the center of the first axial screw 54 as the center of circle, first screw 55
It is located in arc groove 511, the center of first axial screw 54 is also the fixation rotating fulcrum of adjustable plate 52.During regulation,
The first screw 55 is unscrewed, by the cooperation of the first screw 55 and arc groove 511 adjustable plate 52 can be made to be revolved around the first axial screw 54
Turn, so as to adjust installing plate 53 and on installing plate 53 each component position；After regulation terminates, the first screw 55 is tightened i.e.
Can.Attachment structure between the adjustable plate 52 and installing plate 53 is：As shown in figure 5, the adjustable plate 52 has vertical extension
Second connecting portion 522, the installing plate 53 is connected with the second connecting portion 522 of adjustable plate 52 by the second screw 56, institute
State and kidney slot 523 is offered in second connecting portion 522, second screw 56 is located in kidney slot 523.During regulation, unscrew
Second screw 56, you can mobile installing plate 53, so as to adjust the position of each component on installing plate 53；After regulation terminates,
Tighten the second screw 56.
Further, as shown in Figure 6 and Figure 7, it is provided with and is oppositely arranged by screw on the right flank of the installing plate 53
The thread tension disc 8 that is stacked of two panels or so, the folder between two panels thread tension disc 8 formed with opening towards cable-through hole 21 on feed tip 2
Wire casing, the clamp groove are located at the right edge of moving knife 7 and the engagement place of stationary knife 6.During trimming, when moving knife 7 drives decorative thread to close
During the direction movement of stationary knife 6, decorative thread also simultaneously to close to the direction of clamp groove it is mobile, until being sandwiched into two panels thread tension disc 8；When
After trimming terminates, the end of a thread of decorative thread is still clamped between two panels thread tension disc 8, so as to be ready to play seam next time, is carried
Height operation Discussing Convenience.In addition, in two panels thread tension disc 8, the thickness close to a piece of thread tension disc 8 of moving knife 7 and the engagement place of stationary knife 6 is less than
The thickness of another thread tension disc 8 away from moving knife 7 and the engagement place of stationary knife 6；Therefore, two panels or so is arranged in the right side of installing plate 53
In two panels thread tension disc 8, the thread tension disc 8 in left side is thin thread tension disc 81, and the thread tension disc 8 on right side is thick thread tension disc 82, is advantageous to decorate
Line is sandwiched in clamp groove exactly.As shown in fig. 6, in the junction of installing plate 53 and two panels thread tension disc 8, two panels thread tension disc 8
On all offer the strip grooves passed through for screw, and then installation site of the two panels thread tension disc 8 on installing plate 53 can be carried out micro-
Adjust, namely the position of adjustment clamp groove, ensure clamp effect.
Further, as shown in Figure 6 and Figure 7, thread cutting mechanism also includes adjustment sheet 9, and the adjustment sheet 9 passes through the 3rd screw
10 are installed on the right flank of installing plate 53, and the end of the adjustment sheet 9 has the regulation feeler 91 that bending extends, and the regulation is touched
Angle 91 and the right side of the thick thread tension disc 82 on right side abut against；Adjusting screw 11, the tune are also associated with the installing plate 53
Save screw 11 with the screw thread of adjustment sheet 9 to coordinate, therefore the screwed hole being engaged with adjusting screw 11, Yi Jiyu are offered in adjustment sheet 9
The through hole that 3rd screw 10 is engaged；When turning adjusting screw 11, the regulation feeler 91 of fine-tuning fine setting adjustment sheet 9 is put on
The active force of right side thickness thread tension disc 82, and then change the clamping force between the thin thread tension disc 81 of two panels and thick thread tension disc 82, realize folder
The regulation of line power, and it is easy to operate.
Further, as shown in figure 8, being provided with trimming driving source 12 and trimming drive component on the installing plate 53, institute
Stating trimming driving source 12 has rotatable trimming drive division 121, and the trimming drive division 121 is by trimming drive component with moving
The upper end of knife 7 is connected, drives moving knife 7 to move.The preferred embodiment of the trimming drive component is：As shown in Figure 8 and Figure 9,
The trimming drive component include upper end fixed with the phase of trimming drive division 121 trimming crank 13, for being hinged trimming crank 13
The second axial screw 14 for extending with moving knife 7 and left and right, the guide groove 532 for being opened on installing plate 53 and being engaged with moving knife 7,
And the chute 131 of the lower end of trimming crank 13 is opened in, and moving direction extension of the guide groove 532 along moving knife 7, described second
Axial screw 14 is located in chute 131 and can moved in chute 131 in the bearing of trend along chute 131.The trimming drives
Dynamic source 12 can be motor, electromagnet etc., when trimming driving source 12 acts, drive trimming crank 13 to turn over an angle together
Degree, can drive moving knife 7 to be moved in chute 131 along the bearing of trend of chute 131 by the cooperation of moving knife 7 and chute 131, realize
Moving knife 7 is to the direction movement closer or far from cable-through hole 21, namely realizes that moving knife 7 moves to the direction away from or close to stationary knife 6.
The trimming drive component structure simplifies, and can further discharge the operating space of thread cutting mechanism, and use motor or electromagnet
Direct drive, structure are simpler.
Preferably, the trimming driving source 12 is fixed by screws on the left surface of installing plate 53, itself and trimming crank
13 fixed form is preferably：As shown in Figs. 8 to 11, the upper end of trimming crank 13 has the crank connecting portion 132 to take the shape of the letter U,
Trimming drive division 121 is located in crank connecting portion 132, reuses bolt 15, the Yi Jiyu being located in crank connecting portion 132
The nut 16 that bolt 15 is engaged locks crank connecting portion 132 and crank connecting portion 132, and then realizes the band of trimming drive division 121
Dynamic trimming crank 13 rotates.
As shown in figure 9, knife locating part 17 is installed out on the left surface of the installing plate 53 and returns knife locating part 18；When cutting
When line driving source 12 is stretched out by trimming drive component driving moving knife 7 from installing plate 53, trimming crank 13 can be with going out knife limit
Position part 17 abuts against, and then limits thread cutting mechanism and go out cutter position；Moved when trimming driving source 12 is driven by trimming drive component
When knife 7 is retracted in installing plate 53, trimming crank 13 can abut against with returning knife locating part 18, and then limit time knife of thread cutting mechanism
Position.In the present embodiment, described time knife locating part 18 can be made up of a screw being fixed on installing plate 53；And it is described go out
Knife locating part 17 is made up of eccentric bushing 171 and the 4th screw 172 that is located in eccentric bushing 171, and the eccentric bushing 171 passes through the
Four screws 172 are installed on installing plate 53, the center of the eccentric bushing 171 and the center eccentric setting of the 4th screw 172, described to cut
Line crank 13 can abut against with the outer peripheral face of eccentric bushing 171；After unscrewing the 4th screw 172, rotatable eccentric bushing 171, so as to
Eccentric bushing 171 is finely adjusted relative to the position of trimming crank 13, and then fine-tuning moving knife 7 goes out cutter position.
The present invention also provides a kind of sewing machine, and thread cutting mechanism as described above is provided with the sewing machine.
So that trimming driving source 12 is electromagnet as an example, the trimming principle of thread cutting mechanism and sewing machine with said structure is such as
Under：
When sewing machine is normally sewed, thread cutting mechanism is in original state, and moving knife 7 is held it away from the upper surface of feed tip 2
Cable-through hole 21 position；When sewing end needs trimming, the electric control module controls electromagnet in sewing machine is powered, electromagnet
Iron core rotates, and drives moving knife 7 to be stretched out from installing plate 53 by trimming drive component, the cable-through hole 21 up to moving to feed tip 2
In catch on decorative thread, abut against that to carry out out knife spacing by trimming crank 13 and eccentric bushing 171；Afterwards, it is automatically controlled in sewing machine
Module control electromagnet power-off, the plunger return of electromagnet, drives moving knife 7 to be retracted in installing plate 53 by trimming drive component,
Then moving knife 7 drives decorative thread to be moved to close to the direction of stationary knife 6, cuts decorative thread until being engaged with stationary knife 6, by trimming crank
13 abut against that to carry out back knife spacing with return knife locating part 18；Meanwhile decorative thread the end of a thread of cutting is clamped in two panels thread tension disc 8
Between clamp groove in, for next time rise a seam be ready, realize cutting out and clamping for decorative thread.In addition, the electricity in sewing machine
Control module is connected with trimming driving source 12 and presser foot lifter driving source, while electric control module controls trimming driving source 12 acts,
The action of presser foot lifter driving source is also controlled, sewing machine is realized when performing trimming action while also performs presser foot lifter action, so as to save
The trimming time is saved, lifts the operating efficiency of sewing machine.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (12)
1. a kind of thread cutting mechanism, the suture in needle part is connected for cutting, the needle part is provided with what is passed through for suture
Cable-through hole (21), it is characterised in that：The thread cutting mechanism include solid tool rest (5), the stationary knife (6) on solid tool rest (5), with
And the moving knife (7) on solid tool rest (5) is movably mounted at, the moving knife (7) can be to closer or far from mistake line on needle part
The direction movement in hole (21), the one end of the moving knife (7) away from solid tool rest (5) have hooking portion (71), the hooking portion (71)
For catching on the suture passed through from needle part in cable-through hole (21), the moving knife (7) can engage with stationary knife (6).
2. thread cutting mechanism according to claim 1, it is characterised in that：The needle part be sewing machine in feed tip (2), institute
Cable-through hole (21) is stated to be located on the upper surface of feed tip (2)；The solid tool rest (5) is arranged on chain-drive section in sewing machine case (1)
(102) in side wall and positioned at the top of feed tip (2).
3. thread cutting mechanism according to claim 1 or 2, it is characterised in that：The solid tool rest (5) includes being used for and sewing machine
Casing (1) mutually fixed fixed plate (51), the adjustable plate (52) that is connected with fixed plate (51) and is connected with adjustable plate (52)
The installing plate (53) connect, the adjustable plate (52) can rotate relative to fixed plate (51), and the installing plate (53) is relative to tune
Section plate (52) can move, and the stationary knife (6) is fixed on installing plate (53), and the moving knife (7) is slidably mounted on installing plate
(53)。
4. thread cutting mechanism according to claim 3, it is characterised in that：The adjustable plate (52) has first connecting portion
(521), the first connecting portion (521) of the fixed plate (51) and adjustable plate (52) be hinged by the first axial screw (54),
And be connected by the first screw (55), offer an arc groove (511), the arc groove on the fixed plate (51)
(511) using the center of the first axial screw (54) as the center of circle, first screw (55) is located in arc groove (511).
5. thread cutting mechanism according to claim 3, it is characterised in that：The adjustable plate (52) has second connecting portion
(522), the installing plate (53) is connected with the second connecting portion (522) of adjustable plate (52) by the second screw (56), described
Kidney slot (523) is offered in second connecting portion (522), second screw (56) is located in kidney slot (523).
6. thread cutting mechanism according to claim 1, it is characterised in that：It is provided with what is be oppositely arranged on the solid tool rest (5)
Two panels thread tension disc (8), the clamp groove between two panels thread tension disc (8) formed with opening towards cable-through hole on needle part (21) are described
Clamp groove is located at the side of moving knife (7) and stationary knife (6) engagement place.
7. thread cutting mechanism according to claim 6, it is characterised in that：Also include adjustment sheet (9), the adjustment sheet (9) is logical
Cross the 3rd screw (10) and be installed on solid tool rest (5), there is regulation feeler (91), the regulation feeler on the adjustment sheet (9)
(91) abutted against with a piece of thread tension disc (8) in two panels thread tension disc (8)；Adjusting screw is also associated with the solid tool rest (5)
(11), the adjusting screw (11) coordinates with adjustment sheet (9) screw thread, when turning adjusting screw (11), can change two panels folder
Clamping force between line piece (8).
8. thread cutting mechanism according to claim 6, it is characterised in that：In two panels thread tension disc (8), close to moving knife (7) and determine
The thickness of a piece of thread tension disc (8) of knife (6) engagement place is less than another thread tension disc away from moving knife (7) and stationary knife (6) engagement place
(8) thickness.
9. thread cutting mechanism according to claim 1, it is characterised in that：Trimming driving source is installed on the solid tool rest (5)
(12) and trimming drive component, the trimming driving source (12) have rotatable trimming drive division (121), the trimming driving
Portion (121) is connected with the other end of moving knife (7) by trimming drive component, drives moving knife (7) mobile；The trimming driving group
Part includes the trimming crank (13) that one end and trimming drive division (121) mutually fix, for being hinged trimming crank (13) and moving knife (7)
The second axial screw (14), the guide groove (532) that is opened on solid tool rest (5) and is engaged with moving knife (7) and be opened in
The chute (131) of trimming crank (13) other end, moving direction extension of the guide groove (532) along moving knife (7), described second
Axial screw (14) is located in chute (131) and can moved in chute (131) along the bearing of trend of chute (131).
10. thread cutting mechanism according to claim 9, it is characterised in that：Knife locating part is installed out on the solid tool rest (5)
(17) and knife locating part (18) is returned, the trimming crank (13) can offset with going out knife locating part (17) and returning knife locating part (18)
Connect.
11. thread cutting mechanism according to claim 10, it is characterised in that：It is described go out knife locating part (17) include eccentric bushing
(171) and the 4th screw (172), the eccentric bushing (171) are installed on solid tool rest (5), the bias by the 4th screw (172)
The center of (171) and the center eccentric setting of the 4th screw (172) are covered, the trimming crank (13) can be with eccentric bushing (171)
Outer peripheral face abut against.
A kind of 12. sewing machine, it is characterised in that：Thread trimmer described in claim any one of 1-11 is installed in the sewing machine
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452345.0A CN107893290A (en) | 2017-12-28 | 2017-12-28 | A kind of thread cutting mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452345.0A CN107893290A (en) | 2017-12-28 | 2017-12-28 | A kind of thread cutting mechanism and sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN107893290A true CN107893290A (en) | 2018-04-10 |
Family
ID=61808856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452345.0A Pending CN107893290A (en) | 2017-12-28 | 2017-12-28 | A kind of thread cutting mechanism and sewing machine |
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| CN (1) | CN107893290A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042579A (en) * | 2019-05-31 | 2019-07-23 | 阮健明 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
Citations (6)
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| US20140261122A1 (en) * | 2013-03-15 | 2014-09-18 | Hsien-Chang Tseng | Cutting Device for a Sewing Machine |
| CN204780203U (en) * | 2015-04-24 | 2015-11-18 | 星锐缝纫机(嘉兴)有限公司 | Sewing machine with go up ornamental thread cutters and last group traditional thread binding putting |
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| CN110042579A (en) * | 2019-05-31 | 2019-07-23 | 阮健明 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
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Application publication date: 20180410 |