CN209144415U - A kind of sewing machine and automatic shearing mechanism - Google Patents
A kind of sewing machine and automatic shearing mechanism Download PDFInfo
- Publication number
- CN209144415U CN209144415U CN201822006245.1U CN201822006245U CN209144415U CN 209144415 U CN209144415 U CN 209144415U CN 201822006245 U CN201822006245 U CN 201822006245U CN 209144415 U CN209144415 U CN 209144415U
- Authority
- CN
- China
- Prior art keywords
- trimming
- motor
- automatic shearing
- shearing mechanism
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to sewing device technical field, refers in particular to a kind of sewing machine and automatic shearing structure；It include trimming transmission mechanism, cutter, stationary knife, motor and the trimming cam that rotation is driven by motor, the leading flank of the trimming cam is provided with tracks, the tracks include wire shear part and idle stroke portion, the trimming transmission mechanism is arranged in tracks by roller to be connect with trimming cam, the movement of the motor is controlled by controller, and motor drives cutter rotation to carry out trimming with stationary knife cooperation by trimming transmission mechanism；The utility model is using motor as driving source, and long service life, noise is small, can improve the performance of sewing machine, improves the stability of sewing machine performance.
Description
Technical field:
The utility model belongs to sewing device technical field, refers in particular to a kind of sewing machine and automatic shearing structure.
Background technique:
Currently, automatic shearing mechanism generally is equipped on sewing machine, for realizing the movement of automatic shearing, thus when saving
Between, labour is reduced, working efficiency is improved.Chinese invention patent application if application publication number is 102877230 A of CN discloses
A kind of automatic thread severing device of sewing machine, including the moving knife for cutting line that can cooperate, stationary knife, connecting rod and trimming electromagnet, institute
The stationary knife stated is fixed on sewing machine base, and one end of the moving knife and connecting rod is fixed on trimming knife rest, trimming knife rest set
In lower axle, the other end of connecting rod and one end of drive rod are hinged, and the other end of drive rod and the dynamic iron of trimming electromagnet connect
It connects, lifts and trimming cam is installed on last item, trimming cam is located at the side of drive rod, is fixed on drive rod and matches with trimming cam
Crossed belt moves the mobile roller of drive rod, and the movement of trimming electromagnet drives moving knife to be in after trimming state, and trimming cam turns
Dynamic to drive moving knife rotation by roller, moving knife rotation cooperates trimming with stationary knife.From the above it can be seen that the driving source of the automatic thread trimming device
For electromagnet, by the flexible movement to realize automatic thread trimming device of electromagnet, noise is larger when use, and structural stability
Difference.
Utility model content:
The purpose of the utility model is to provide a kind of noise is small, the good sewing machine of structural stability and automatic shearing mechanism.
The utility model is realized in this way:
One of purpose of the utility model is to provide a kind of automatic shearing mechanism, includes trimming transmission mechanism, cuts
The leading flank of knife, stationary knife, motor and the trimming cam that rotation is driven by motor, the trimming cam is provided with tracks, institute
Stating tracks includes wire shear part and idle stroke portion, and the trimming transmission mechanism is arranged in tracks and is cut by roller
Line cam connection, the movement of the motor are controlled by controller, and motor drives cutter rotation and stationary knife by trimming transmission mechanism
Cooperation carries out trimming.
In a kind of above-mentioned automatic shearing mechanism, the idle stroke portion is parabolic trough, and the wire shear part is circle
The closed loop configuration of arc groove, circular groove and parabolic trough, the center of circular groove and parabolic trough are opened
The center at mouth end is respectively positioned on the axis of machine shaft.
In a kind of above-mentioned automatic shearing mechanism, the trimming transmission mechanism includes cursor, and one end of cursor is logical
Cross that shaft is rotatably connected on casing, one end of the other end and tangent line drive link connects, roller is arranged on cursor, rolling
Column rolled in the tracks of trimming cam drive cursor rotate axle portion rotation, the other end and shift fork of tangent line drive link
It is hinged, the middle part of shift fork is rotatably connected on casing by axial screw, and the other end of shift fork is provided with fork, tangent line connecting rod
It is connect by tangent line link pin with fork, and the other end of tangent line connecting rod is fixedly connected with slitter shaft, cutter is installed in slitter shaft
On.
In a kind of above-mentioned automatic shearing mechanism, the slitter shaft is rotatably arranged on knife rest, and the stationary knife setting exists
On knife rest.
In a kind of above-mentioned automatic shearing mechanism, it is provided with circlip on the slitter shaft, is set between circlip and knife rest
It is equipped with spring, one end of spring is held out against on circlip, and the other end is held out against on the end face of knife rest.
In a kind of above-mentioned automatic shearing mechanism, the motor is stepper motor or grating electromechanical.
In a kind of above-mentioned automatic shearing mechanism, the trimming cam is symmetrical structure, is provided on trimming cam
First home position and the second home position.
Another purpose of the utility model is to provide a kind of sewing machine, including such as above-mentioned automatic shearing mechanism.
The advantage that the utility model protrudes compared with prior art is:
1, the utility model realizes automatic needle-foot-lifting by motor, can be by controlling and adjusting the rotational angle of motor
It realizes the control and adjusting of relevant parameter, for example realizes the control and adjusting of presser foot lifter height, so that sewing machine can be suitably used for
The cloth of different-thickness improves sewing effect.
2, for the utility model using motor as driving source, long service life, noise is small, can improve the property of sewing machine
Can, improve the stability of sewing machine performance.
3, the utility model is compact-sized, installation effectiveness is high, part is few, at low cost.
Detailed description of the invention:
Fig. 1 is one of stereoscopic schematic diagram of the utility model；
Fig. 2 is the two of the stereoscopic schematic diagram of the utility model；
Fig. 3 is the partial enlargement diagram of Fig. 2；
Fig. 4 is the schematic diagram of the shift fork of the utility model；
Fig. 5 is the schematic diagram of the cursor of the utility model；
Fig. 6 is the schematic diagram of the trimming cam of the utility model.
In figure: 1, cutter；2, stationary knife；3, motor；4, trimming cam；5, wire shear part；6, idle stroke portion；7, roller；8, turn
Swing arm；9, shaft；10, tangent line drive link；11, shift fork；12, axial screw；13, tangent line connecting rod；14, tangent line link pin；
15, slitter shaft；16, knife rest；17, circlip；18, spring；19, fork.
Specific embodiment:
The utility model is further described with specific embodiment below, referring to Fig. 1-6:
One of purpose of the utility model is to provide a kind of automatic shearing mechanism, includes trimming transmission mechanism, cuts
Knife 1, stationary knife 2, motor 3 and by motor 3 driving rotation trimming cam 4, the motor 3 of the utility model can be stepper motor or
Grating electromechanical, the preferred stepper motor of the present embodiment.Trimming cam 4 passes through the screw being arranged radially and is fixed in the shaft of motor 3
Or be connected by key in the shaft for being fixed on motor 3, it realizes and is rotated synchronously with the shaft of motor 3.The front side of the trimming cam 4
Face is provided with tracks, and the tracks include wire shear part 5 and idle stroke portion 6, and the trimming transmission mechanism passes through rolling
The setting of column 7 is connect in tracks with trimming cam 4, and the movement of the motor 3 is controlled by controller, and motor 3 passes through trimming
Transmission mechanism drives the rotation of cutter 1 to carry out trimming with the cooperation of stationary knife 2.
The utility model is used as driving source using motor 3, for technical solution of the driving source using electromagnet, energy
Enough increase the service life of power source, and the operation sound is small, low noise can finally improve the performance of sewing machine, improve sewing machine
The stability of performance.
Specifically, the idle stroke portion 6 is parabolic trough, and the wire shear part 5 is circular groove, circular groove
And the closed loop configuration of parabolic trough, the center of circular groove and the center of parabolic trough open end are respectively positioned on motor
On the axis of 3 shafts.It is seamlessly transitted between the center and parabolic trough of circular groove, it is ensured that roller 7 is in tracks
Interior smart scroll avoids Caton, improves trimming effect.
Since the trimming cam 4 is symmetrical structure, the first home position and second original is provided on trimming cam 4
Position can respectively control the rotational angle of trimming cam 4 on two home positions.
Further, the trimming transmission mechanism includes cursor 8, and one end of cursor 8 is rotatablely connected by shaft 9
On casing, one end connection of the other end and tangent line drive link 10, roller 7 is arranged on cursor 8, and roller 7 is convex in trimming
It is rolled in the tracks of wheel 4 and cursor 8 is driven to rotate the rotation of axle portion 9, the other end of tangent line drive link 10 and shift fork 11
Hingedly, the middle part of shift fork 11 is rotatably connected on casing by axial screw 12, and the other end of shift fork 11 is provided with fork, tangent line
Connecting rod 13 is connect by tangent line link pin 14 with fork, and the other end of tangent line connecting rod 13 is fixedly connected with slitter shaft 15, cutter 1
It is installed on slitter shaft 15.
The trimming transmission mechanism can also be using such as flowering structure:
Including tangent line drive link, the upper end of tangent line drive link is provided with roller, the lower end of tangent line drive link and pendulum
Swing arm is hinged, and the other end of swing arm is fixedly connected with slitter shaft, and the middle part of swing arm is rotatably connected on machine by axial screw
On shell, the reduction torsion spring for driving each part to reset is provided on axial screw.
Further, the slitter shaft 15 is rotatably arranged on knife rest 16, and the stationary knife 2 is arranged on knife rest 16.Stationary knife 2
Position closely cutter 1 be arranged, cutter 1 rotate process and stationary knife 2 formed scissors structure, achieve the purpose that trimming.
In order to enable cutter 1 to be arranged always close to stationary knife 2, trimming effect is improved, is provided with circlip on the slitter shaft 15
17, spring 18 is provided between circlip 17 and knife rest 16, one end of spring 18 is held out against on circlip 17, and the other end is held out against in knife
On the end face of frame 16.
The control method of the automatic shearing of the utility model, includes the following steps:
S1, judge that trimming cam 4 is located at the first home position or the second home position by controller；
S2, when trimming cam 4 is located at the first home position, control trimming cam 4 rotate clockwise make roller 7 be located at cut
Start trimming action when the parabolic trough of line cam 4；After the completion of trimming, control trimming cam 4 is clockwise to second
Home position；
S3, when trimming cam 4 is located at the second home position, control trimming cam 4 rotate counterclockwise make roller 7 be located at cut
Start trimming action when the parabolic trough of line cam 4；After the completion of trimming, control trimming cam 4 is clockwise to first
Home position.
Another purpose of the utility model is to provide a kind of sewing machine, including such as above-mentioned automatic shearing mechanism.
Above-described embodiment is only one of preferred embodiment of the utility model, and the implementation of the utility model is not limited with this
Range, therefore: the equivalence changes that all shape, structure, principles according to the utility model are done should all be covered by the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of automatic shearing mechanism, it is characterised in that: include trimming transmission mechanism, cutter (1), stationary knife (2), motor (3)
And the trimming cam (4) by motor (3) driving rotation, the leading flank of the trimming cam (4) are provided with tracks, the fortune
Dynamic rail road includes wire shear part (5) and idle stroke portion (6), and the trimming transmission mechanism is arranged by roller (7) in tracks
Interior to connect with trimming cam (4), the movement of the motor (3) is controlled by controller, and motor (3) is driven by trimming transmission mechanism
Cutter (1) rotation carries out trimming with stationary knife (2) cooperation.
2. a kind of automatic shearing mechanism according to claim 1, it is characterised in that: the idle stroke portion (6) is parabola
Connected in star, the wire shear part (5) are circular groove, and the closed loop configuration of circular groove and parabolic trough is arc-shaped recessed
The center of slot and the center of parabolic trough open end are respectively positioned on the axis of motor (3) shaft.
3. a kind of automatic shearing mechanism according to claim 1 or 2, it is characterised in that: the trimming transmission mechanism includes
Cursor (8), one end of cursor (8) is rotatably connected on casing by shaft (9), the other end and tangent line drive link
(10) one end connection, roller (7) are arranged on cursor (8), and roller is rolled in the tracks of trimming cam (4) and driven
Cursor (8) rotates axle portion (9) rotation, and the other end of tangent line drive link (10) is hinged with shift fork (11), shift fork (11)
Middle part is rotatably connected on casing by axial screw (12), and the other end of shift fork (11) is provided with fork (19), tangent line connecting rod
(13) it is connect by tangent line link pin (14) with fork (19), and the other end of tangent line connecting rod (13) and slitter shaft (15) fixed company
It connects, cutter (1) is installed on slitter shaft (15).
4. a kind of automatic shearing mechanism according to claim 3, it is characterised in that: the slitter shaft (15) is rotatably arranged on
On knife rest (16), the stationary knife (2) is arranged on knife rest (16).
5. a kind of automatic shearing mechanism according to claim 4, it is characterised in that: be provided with card on the slitter shaft (15)
Spring (17) is provided with spring (18) between circlip (17) and knife rest (16), and one end of spring (18) is held out against on circlip (17),
The other end is held out against on the end face of knife rest (16).
6. a kind of automatic shearing mechanism according to claim 1, it is characterised in that: the motor (3) be stepper motor or
Grating electromechanical.
7. a kind of automatic shearing mechanism according to claim 1, it is characterised in that: the trimming cam (4) is symmetrical junction
Structure is provided with the first home position and the second home position on trimming cam (4).
8. a kind of sewing machine, it is characterised in that: including the described in any item automatic shearing mechanisms of such as claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006245.1U CN209144415U (en) | 2018-11-30 | 2018-11-30 | A kind of sewing machine and automatic shearing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006245.1U CN209144415U (en) | 2018-11-30 | 2018-11-30 | A kind of sewing machine and automatic shearing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209144415U true CN209144415U (en) | 2019-07-23 |
Family
ID=67288531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822006245.1U Active CN209144415U (en) | 2018-11-30 | 2018-11-30 | A kind of sewing machine and automatic shearing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209144415U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041723A (en) * | 2019-12-31 | 2020-04-21 | 浙江美机缝纫机有限公司 | Thread cutting mechanism of sewing machine |
| CN112391745A (en) * | 2019-08-17 | 2021-02-23 | 杰克缝纫机股份有限公司 | Presser foot lifting and trimming driving structure of sewing machine and control method thereof |
| WO2021072971A1 (en) * | 2019-10-16 | 2021-04-22 | 浙江美机缝纫机有限公司 | Thread trimming and presser foot mechanism of sewing machine |
| WO2023197402A1 (en) * | 2022-04-12 | 2023-10-19 | 浙江普莱得电器股份有限公司 | Screw shearing machine |
-
2018
- 2018-11-30 CN CN201822006245.1U patent/CN209144415U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391745A (en) * | 2019-08-17 | 2021-02-23 | 杰克缝纫机股份有限公司 | Presser foot lifting and trimming driving structure of sewing machine and control method thereof |
| WO2021072971A1 (en) * | 2019-10-16 | 2021-04-22 | 浙江美机缝纫机有限公司 | Thread trimming and presser foot mechanism of sewing machine |
| CN111041723A (en) * | 2019-12-31 | 2020-04-21 | 浙江美机缝纫机有限公司 | Thread cutting mechanism of sewing machine |
| WO2023197402A1 (en) * | 2022-04-12 | 2023-10-19 | 浙江普莱得电器股份有限公司 | Screw shearing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209144415U (en) | A kind of sewing machine and automatic shearing mechanism | |
| CN109537194B (en) | Sewing machine and automatic presser foot lifting and thread cutting control method | |
| CN201416092Y (en) | Round knife drive mechanism for automatic shear line sewing machine | |
| CN202022603U (en) | Automatic roll changing device in dipping production | |
| CN209243327U (en) | A kind of sewing machine | |
| CN209703002U (en) | A kind of automatic shearing and foot lifting mechanism and sewing machine | |
| CN104532491A (en) | Thread trimming mechanism for two-needle sewing machine | |
| CN208167272U (en) | A kind of automatic shearing mechanism and sewing machine | |
| CN204608360U (en) | A kind of thread cutting mechanism of two-needle sewing machine | |
| CN208183275U (en) | A kind of sewing machine | |
| CN209584528U (en) | A kind of list actuated by cams thread-trimming lifter-presser foot mechanism and sewing machine | |
| CN201002296Y (en) | Edge bonding machine | |
| CN201439557U (en) | Waste selvage scissor device for weaving machine | |
| CN205443572U (en) | With supporting wire net hem device of rapier weaving machine | |
| CN214060867U (en) | Presser foot lifting and trimming device of overedger | |
| CN212270404U (en) | Thread cutting mechanism of sewing machine | |
| CN212714048U (en) | Hemming machine's trimming and lift presser foot mechanism and hemming machine | |
| CN208486044U (en) | A kind of industrial sewing machine stepping presser foot lifter thread cutting mechanism | |
| CN112391746A (en) | Presser foot lifting and trimming device of overedger | |
| CN219908053U (en) | Sewing machine for sewing | |
| CN206616349U (en) | The rear cutting knife cutting facility of sewing machine | |
| CN209508569U (en) | A kind of sewing machine and its mechanism is backstitched automatically | |
| CN219239968U (en) | Overedger with thread cutting and presser foot lifting mechanisms | |
| CN214830997U (en) | Scissors hook structure of glove knitting machine | |
| US4517908A (en) | Automatic notching device in a sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |