CN207091677U - A kind of thread-loosening device of sewing machine - Google Patents
A kind of thread-loosening device of sewing machine Download PDFInfo
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- CN207091677U CN207091677U CN201720654472.8U CN201720654472U CN207091677U CN 207091677 U CN207091677 U CN 207091677U CN 201720654472 U CN201720654472 U CN 201720654472U CN 207091677 U CN207091677 U CN 207091677U
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- disc
- thread tension
- tension releasing
- cable
- loose ends
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Abstract
The utility model provides a kind of thread-loosening device of sewing machine, belongs to technical field of sewing equipment.The technical problems such as thread-loosening device that it solves existing sewing machine is complicated, assembling inconvenience, manufacturing cost height.Sewing machine includes casing and wire clipping component, wire clipping component has at least one pair of cable-clamping disc to lean, this thread-loosening device includes the upper thread tension releasing disc being hinged on casing, one end of upper thread tension releasing disc has the loose ends pawl of face cable-clamping disc, the other end of upper thread tension releasing disc is connected with the power source that can promote thread tension releasing disc around be hinged spot wobble, when upper thread tension releasing disc is swung, loose ends pawl can be embedded between two relative cable-clamping discs.Thread-loosening device in the utility model is compact-sized, and assembling is simple and reliable, and action is accurate, and overall manufacturing cost is low and good appearance.
Description
Technical field
The utility model belongs to technical field of sewing equipment, is related to a kind of sewing machine, particularly a kind of loose ends of sewing machine
Device.
Background technology
Sewing machine is with one or more sewing thread, and one or more stitchings are formed on sewing, make one or more layers seam
The machine that material interweaves or united by a seam.Fabric and leather, plastics, the paper such as function of sewing sewing cotton, fiber crops, silk, hair, staple fibre
Deng product, the stitching neat appearance stitched out, it is smooth firmly, sewing velocity is fast, efficiency high, easy to use.Wire-clamping device is sewing
The important component of machine, the stable supplying of upper thread is realized by it, ensure being normally carried out for sewing.Trimming side is inhaled in various sides
In the sewing devices such as formula, thread-loosening device is the unit that can not be lacked, because in sewing machine beginning and end need of work tangent line,
It is generally necessary to which wire-clamping device is unclamped, upper thread is set to be in loose ends state.
China's patent (notification number：CN202007317U；The day for announcing：It is pneumatic 2011-10-12) to disclose a kind of overedger
Thread-loosening device；The device includes the loose ends claw for being inserted in each upper thread tension disc side, in the overseam of upper thread tension disc nearby
A minitype piston cylinder mechanism is fixed with casing body, the rotating shaft of its piston shaft and upper thread tension disc is mutually perpendicular to, piston stroke
For 5-10mm, air admission hole and the compressed gas source of the cylinder are connected, and have the control of electromagnetism Pneumatic valve；Claw is packed on piston shaft simultaneously
As piston promotes upper thread loose ends claw to make axial displacement.When electromagnetism Pneumatic valve obtains the required loose ends instruction that control system sends
Afterwards, air intake valve is opened immediately, and compressed gas enters cylinder, moves piston, is packed in the claw on piston shaft with piston
Movement and promote upper thread tension disc displacement, upper thread is in relaxed state, be easy to shear.
Pneumatic thread-loosening device in above-mentioned patent document is heavier, and noise is big, and cost is high, and requirement on machining accuracy is high, institute
Larger cylinder force is needed to promote, it is not attractive in appearance enough.
The content of the invention
The utility model is directed to above mentioned problem existing for existing technology, there is provided a kind of thread-loosening device of sewing machine, this reality
It is with new technical problem to be solved：How a kind of compact-sized, easy to assembly and low cost thread-loosening device is provided.
The purpose of this utility model can be realized by following technical proposal：
A kind of thread-loosening device of sewing machine, sewing machine include casing and wire clipping component, and the wire clipping component has at least one
To the cable-clamping disc to lean, it is characterised in that the thread-loosening device includes be hinged upper thread tension releasing disc on the housing, it is described on
One end of thread tension releasing disc has a loose ends pawl of cable-clamping disc described in face, the other end of the upper thread tension releasing disc be connected with can promote it is described
Upper thread tension releasing disc is around the power source of be hinged spot wobble, and when the upper thread tension releasing disc is swung, the loose ends pawl can be embedded in relative two
Between individual cable-clamping disc.
Its principle is as follows：Wire clipping component also included line plate and mounting rod, the head threads of mounting rod passed through line plate with
And after the circular hole of cable-clamping disc, line plate will be crossed and be fixed on casing；By elastic component, it has what is leant to each pair cable-clamping disc
Trend, upper thread can be clamped.Upper thread tension releasing disc can rotate around pin joint, by controlling power source to drive upper thread tension releasing disc past around pin joint
Physical pendulum is moved, and during loose ends, upper thread tension releasing disc, which is swung, to be driven the loose ends pawl on upper thread tension releasing disc mobile to cable-clamping disc and be embedded, so as to will
Two cable-clamping discs to lean separate, and reach the purpose of loose ends；After loose ends terminates, power source drives upper thread tension releasing disc counter motion,
Resetted so as to realize.This thread-loosening device is compact-sized, and assembling is simple and reliable, and action is accurate, and overall manufacturing cost is low and beautiful outline form
See.
In the thread-loosening device of above-mentioned sewing machine, lower thread tension releasing disc is installed with the casing；The upper thread tension releasing disc passes through
Axial screw is hinged with the lower thread tension releasing disc, is arranged at intervals between the upper thread tension releasing disc and lower thread tension releasing disc and is provided between the two
Spring.Further, spring is set on axial screw, and the both ends of spring are respectively acting on thread tension releasing disc and lower thread tension releasing disc.
Upper thread tension releasing disc can rotate around axial screw, will not when being rotated by the upper thread tension releasing disc of spring being resisted against tightly, making thread tension releasing disc
Shake and noise are produced because of gap；Nor affect on its rotation simultaneously；When upper thread tension releasing disc loose ends, driving cable-clamping disc leans
Elastic force and the active force of the spring cancel out each other, to prevent stuck phenomenon.
In the thread-loosening device of above-mentioned sewing machine, the wire clipping component has two pairs of cable-clamping discs to lean；On described
Thread tension releasing disc is located at the top of the wire clipping component and between two pairs of cable-clamping disc, and the end of the upper thread tension releasing disc is respectively equipped with two
The individual loose ends pawl and being corresponded with two pairs of cable-clamping discs is set.Two pairs of cable-clamping discs to lean can ensure the steady of upper thread supply
Determine reliability, by the swing of upper thread tension releasing disc, loose ends pawl can be made while unclamp two pairs of cable-clamping discs, the loose ends of upper thread is realized, move
The synchronism and uniformity of work are good, more precisely reliable.
In the thread-loosening device of above-mentioned sewing machine, the upper thread tension releasing disc is in strip and is vertically arranged, two loose ends pawls point
Not not laterally and the vertical lower end for being arranged on the upper thread tension releasing disc, the loose ends pawl laterally set are located at its corresponding cable-clamping disc
Top and face this to cable-clamping disc, the vertically arranged loose ends pawl is between two teams' cable-clamping disc and face is corresponding to it folder
Drum.When upper thread tension releasing disc is around be hinged spot wobble loose ends, downwardly corresponding cable-clamping disc moves the loose ends pawl laterally set, vertically
The loose ends pawl of setting is moved rightwardly toward corresponding cable-clamping disc, and both are embedded in two pairs of cable-clamping discs simultaneously, realizes that loose ends acts.
In the thread-loosening device of above-mentioned sewing machine, the loose ends pawl is in strip, the corresponding cable-clamping disc of loose ends pawl direction
Side there is guiding surface.It is capable of by the guiding surface loose ends pawl in the insertion cable-clamping disc of fast accurate, overcomes bullet
Property active force, the cable-clamping disc to lean is separated, realizes loose ends.
In the thread-loosening device of above-mentioned sewing machine, the power source is the cylinder being installed on casing, the cylinder
Joint is installed with output shaft, the joint is flexibly connected with the upper thread tension releasing disc.Cylinder is connected with magnetic valve by tracheae, when
When needing loose ends, solenoid valve control cylinder moving, so as to drive upper thread tension releasing disc to act, reach the purpose of loose ends.After loose ends terminates, electricity
Magnet valve controls cylinder counter motion, upper loose ends sheet reset；Installation and control are all very convenient.
As an alternative, power source can be hydraulic jack；Power source can also be matching somebody with somebody for motor and gear and rack
Close, or the cooperation of motor and screw and leading screw.
There is the latch along the output Axial and radial of cylinder, institute in the thread-loosening device of above-mentioned sewing machine, on the joint
Stating thread tension releasing disc has the connecting hole of bar shaped close to end, and the latch activity is plugged in the connecting hole.Such activity
Attachment structure can effectively prevent that thread tension releasing disc and lower thread tension releasing disc are stuck because crossing positioning.
In the thread-loosening device of above-mentioned sewing machine, the distance between the pin joint of the upper thread tension releasing disc and connecting hole are more than
The distance between pin joint and loose ends pawl of the upper thread tension releasing disc.The arm of force of so power point is greater than the arm of force of resistance, utilizes
Less power source can be achieved with loose ends action.
Compared with prior art, thread-loosening device of the present utility model is compact-sized, and assembling is simple and reliable, and action is accurate, whole
Body manufacturing cost is low and good appearance.
Brief description of the drawings
Fig. 1 is the mounting structure schematic diagram of this thread-loosening device.
Fig. 2 is the partial enlargement structural representation at A in Fig. 1.
Fig. 3 is the dimensional structure diagram of this thread-loosening device.
Fig. 4 is another dimensional structure diagram of this thread-loosening device.
In figure, 1, casing；2nd, wire clipping component；21st, cable-clamping disc；22nd, mounting rod；23rd, line plate is crossed；3rd, upper thread tension releasing disc；31、
Loose ends pawl；31a, guiding surface；32nd, connecting hole；4th, power source；41st, cylinder；5th, lower thread tension releasing disc；6th, axial screw；7th, spring；
8th, joint；9th, latch.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, this sewing machine includes casing 1 and wire clipping component 2, and wire clipping component 2 has at least one pair of
The cable-clamping disc 21 to lean, wire clipping component 2 also included line plate 23 and mounting rod 22, and thread-loosening device includes being hinged on casing 1
Upper thread tension releasing disc 3, one end of upper thread tension releasing disc 3 has the loose ends pawl 31 of face cable-clamping disc 21, and the other end of upper thread tension releasing disc 3 is connected with
Thread tension releasing disc 3 can be promoted, and around the power source 4 of be hinged spot wobble, when upper thread tension releasing disc 3 is swung, loose ends pawl 31 can be embedded in phase
To two cable-clamping discs 21 between；After the head threads of mounting rod 22 passed through the circular hole of line plate 23 and cable-clamping disc 21, incited somebody to action
Line plate 23 is fixed on casing 1；By elastic component, it has the trend to lean to each pair cable-clamping disc 21, can clamp face
Line.Upper thread tension releasing disc 3 can rotate around pin joint, by controlling power source 4 to drive upper thread tension releasing disc 3 around pin joint reciprocally swinging, loose ends
When, upper thread tension releasing disc 3, which is swung, drives the loose ends pawl 31 on upper thread tension releasing disc 3 to move and be embedded to cable-clamping disc 21, so as to by two
The cable-clamping disc 21 to lean separates, and reaches the purpose of loose ends；After loose ends terminates, power source 4 drives the upper counter motion of thread tension releasing disc 3,
Resetted so as to realize.This thread-loosening device is compact-sized, and assembling is simple and reliable, and action is accurate, and overall manufacturing cost is low and beautiful outline form
See.
As shown in Figures 2 and 3, lower thread tension releasing disc 5 is installed with casing 1；Upper thread tension releasing disc 3 passes through axial screw 6 and lower loose ends
Plate 5 is hinged, and is arranged at intervals between upper thread tension releasing disc 3 and lower thread tension releasing disc 5 and is provided with spring 7 between the two；Spring 7 is set in axle
On the screw 6 of position, the both ends of spring 7 are respectively acting on thread tension releasing disc 3 and on lower thread tension releasing disc 5, upper thread tension releasing disc 3 can be around axial screw 6
Rotate, when being rotated by the upper thread tension releasing disc 3 of being resisted against tightly of spring 7, making thread tension releasing disc 3, will not produce and tremble because of gap
Dynamic and noise；Nor affect on its rotation simultaneously；When upper 3 loose ends of thread tension releasing disc, the elastic force that driving cable-clamping disc 21 leans is with being somebody's turn to do
The active force of spring 7 is cancelled out each other, to prevent stuck phenomenon.
As shown in Fig. 2 wire clipping component 2 has two pairs of cable-clamping discs 21 to lean in the present embodiment；Upper thread tension releasing disc 3 is positioned at folder
The top of line component 2 and between two pairs of cable-clamping discs 21, the end of upper thread tension releasing disc 3 be respectively equipped with two loose ends pawls 31 and with
Two pairs of cable-clamping discs 21, which correspond, to be set, and two pairs of cable-clamping discs 21 to lean can ensure the reliability of upper thread supply, lead to
Cross the swing of thread tension releasing disc 3, loose ends pawl 31 can be made while unclamp two pairs of cable-clamping discs 21, realize the loose ends of upper thread, action it is same
Step property and uniformity are good, more precisely reliable.Upper thread tension releasing disc 3 in strip and being vertically arranged, two loose ends pawls 31 respectively laterally and
The vertical lower end for being arranged on thread tension releasing disc 3, the loose ends pawl 31 laterally set are located at its corresponding top of cable-clamping disc 21 and face
This is to cable-clamping disc 21, vertically arranged loose ends pawl 31 is between two pairs of cable-clamping discs 21 and face is corresponding to it cable-clamping disc 21.
When upper thread tension releasing disc 3 is around be hinged spot wobble loose ends, downwardly corresponding cable-clamping disc 21 moves the loose ends pawl 31 laterally set, vertically
The loose ends pawl 31 of setting is moved rightwardly toward corresponding cable-clamping disc 21, and both are embedded in two pairs of cable-clamping discs 21 simultaneously, realize loose ends
Action.Loose ends pawl 31 is in strip, and the side of loose ends pawl 31 towards corresponding cable-clamping disc 21 has guiding surface 31a, passes through the guiding
Inclined-plane 31a enable the fast accurate of loose ends pawl 31 insertion cable-clamping disc 21 in, overcome elastic acting force, the clamp that will be leant
Disk 21 separates, and realizes loose ends.
As shown in figure 3, power source 4 is to be installed in cylinder 41 on casing 1 in the present embodiment, on the output shaft of cylinder 41
Joint 8 is installed with, there is the latch 9 along the output Axial and radial of cylinder 41 on joint 8, upper thread tension releasing disc 3 has bar shaped close to end
Connecting hole 32, the activity of latch 9 is plugged in connecting hole 32, and cylinder 41 is connected with magnetic valve by tracheae, when needing loose ends,
Solenoid valve control cylinder 41 moves, and so as to drive upper thread tension releasing disc 3 to act, reaches the purpose of loose ends.After loose ends terminates, magnetic valve
The counter motion of cylinder 41 is controlled, upper thread tension releasing disc 3 resets；Installation and control are all very convenient.
Further, the distance between the pin joint of upper thread tension releasing disc 3 and connecting hole 32 are more than upper thread tension releasing disc 3 in the present embodiment
Pin joint and the distance between loose ends pawl 31, the arm of force of such power point is greater than the arm of force of resistance, utilizes less power
Source 4 can be achieved with loose ends action.
Wherein, the line on the cable-clamping disc 21 on the left side in Fig. 2 is to be separated from folder from the lowest positions of the cable-clamping disc 21
Drum 21, therefore the loose ends pawl 31 laterally set is embedded in when corresponding to cable-clamping disc 21, the top of cable-clamping disc 21 is released, but
Its bottom is clamped, thus cross line when in bottom it is possible that being broken due to strong clamping force, in order to solve
This problem, another structure is devised, as shown in figure 4, Fig. 4 structures and Fig. 3 structures are left-right symmetric relations.I.e. by Fig. 3's
Cylinder 41 and lower thread tension releasing disc 5 are arranged on the left side of thread tension releasing disc 3, and the loose ends pawl 31 laterally set is arranged on the right side of thread tension releasing disc 3
Side.So, vertically arranged loose ends pawl 31 is embedded in the cable-clamping disc 21 on the left side, and it is located at the bottom of cable-clamping disc 21 and will not pressed from both sides
Tightly, be not in broken string when crossing line.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although 1, casing has more been used herein；2nd, wire clipping component；21st, cable-clamping disc；22nd, mounting rod；23rd, line plate is crossed；
3rd, upper thread tension releasing disc；31st, loose ends pawl；31a, guiding surface；32nd, connecting hole；4th, power source；41st, cylinder；5th, lower thread tension releasing disc；6th, axle
Position screw；7th, spring；8th, joint；9th, the term such as latch, but it is not precluded from the possibility using other terms.Use these terms
Just for the sake of more easily describing and explaining essence of the present utility model；It is construed as any additional limitation all
Disagreed with the utility model spirit.
Claims (8)
1. a kind of thread-loosening device of sewing machine, sewing machine includes casing (1) and wire clipping component (2), and the wire clipping component (2) has
At least one pair of cable-clamping disc to lean (21), it is characterised in that the thread-loosening device is upper on the casing (1) including being hinged on
Thread tension releasing disc (3), one end of the upper thread tension releasing disc (3) have the loose ends pawl (31) of cable-clamping disc described in face (21), the upper loose ends
The other end of plate (3) is connected with the power source (4) that can promote the upper thread tension releasing disc (3) around be hinged spot wobble, when the upper pine
When line plate (3) is swung, the loose ends pawl (31) can be embedded between two relative cable-clamping discs (21).
2. the thread-loosening device of sewing machine according to claim 1, it is characterised in that be installed with lower pine on the casing (1)
Line plate (5)；The upper thread tension releasing disc (3) is hinged by axial screw (6) and the lower thread tension releasing disc (5), the upper thread tension releasing disc (3)
It is arranged at intervals between lower thread tension releasing disc (5) and is provided with spring (7) between the two.
3. the thread-loosening device of sewing machine according to claim 1 or 2, it is characterised in that the wire clipping component (2) has two
To the cable-clamping disc (21) to lean；The upper thread tension releasing disc (3) is located at the top of the wire clipping component (2) and is located at two pairs of cable-clamping discs
(21) between, the end of the upper thread tension releasing disc (3) be respectively equipped with two loose ends pawls (31) and with two pairs of cable-clamping discs (21) one
One is correspondingly arranged.
4. the thread-loosening device of sewing machine according to claim 3, it is characterised in that the upper thread tension releasing disc (3) in strip and
It is vertically arranged, two loose ends pawls (31) laterally with the vertical lower end for being arranged on the upper thread tension releasing disc (3), are laterally set respectively
The loose ends pawl (31) be located above its corresponding cable-clamping disc (21) and face this to cable-clamping disc (21), the vertically arranged pine
Line pawl (31) is located between two teams' cable-clamping disc (21) and cable-clamping disc (21) of the face corresponding to it.
5. the thread-loosening device of sewing machine according to claim 3, it is characterised in that the loose ends pawl (31) is in strip, institute
State loose ends pawl (31) has guiding surface (31a) towards the side of corresponding cable-clamping disc (21).
6. the thread-loosening device of sewing machine according to claim 1 or 2, it is characterised in that the power source (4) is to be installed in
Cylinder (41) on casing (1), joint (8), the joint (8) and the upper pine are installed with the output shaft of the cylinder (41)
Line plate (3) is flexibly connected.
7. the thread-loosening device of sewing machine according to claim 6, it is characterised in that have on the joint (8) along cylinder
(41) latch (9) of output Axial and radial, the upper thread tension releasing disc (3) has the connecting hole (32) of bar shaped close to end, described to insert
Pin (9) activity is plugged in the connecting hole (32).
8. the thread-loosening device of sewing machine according to claim 7, it is characterised in that the pin joint of the upper thread tension releasing disc (3)
The distance between connecting hole (32) is more than the distance between pin joint and loose ends pawl (31) of the upper thread tension releasing disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654472.8U CN207091677U (en) | 2017-06-07 | 2017-06-07 | A kind of thread-loosening device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720654472.8U CN207091677U (en) | 2017-06-07 | 2017-06-07 | A kind of thread-loosening device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207091677U true CN207091677U (en) | 2018-03-13 |
Family
ID=61551577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720654472.8U Active CN207091677U (en) | 2017-06-07 | 2017-06-07 | A kind of thread-loosening device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207091677U (en) |
-
2017
- 2017-06-07 CN CN201720654472.8U patent/CN207091677U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 318014 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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| CP03 | Change of name, title or address |