CN109629126A - Foot pressure adjusting method based on overedger - Google Patents
Foot pressure adjusting method based on overedger Download PDFInfo
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- CN109629126A CN109629126A CN201811575628.9A CN201811575628A CN109629126A CN 109629126 A CN109629126 A CN 109629126A CN 201811575628 A CN201811575628 A CN 201811575628A CN 109629126 A CN109629126 A CN 109629126A
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- overedger
- foot
- foot pressure
- thickness
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000004744 fabric Substances 0.000 claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 238000011897 real-time detection Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 48
- 230000035945 sensitivity Effects 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 238000009958 sewing Methods 0.000 abstract description 44
- 230000008569 process Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 21
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 230000008859 change Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 230000007423 decrease Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
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- 230000006870 function Effects 0.000 description 3
- 235000011266 Passiflora quadrangularis Nutrition 0.000 description 2
- 244000179684 Passiflora quadrangularis Species 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2305/00—Operations on the work before or after sewing
- D05D2305/32—Measuring
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a kind of foot pressure adjusting method based on overedger, comprising the following steps: default initial pressure；Manually adjust manual adjustment, until pressure between presser feet and needle plate meet it is default；Carry out work feed；Real-time detection cloth is thick during work feed；Operating pressure is calculated according to the cloth thickness, and foot pressure is automatically adjusted by foot pressure regulating mechanism.Foot pressure adjusting method of the present invention based on overedger, adjusts the pressure of pressure foot and needle plate in real time in sewing process, to match different-thickness fabric, makes the phenomenon that sewing machine is smoothly smooth when crossing thicker than stalk, and improvement stitching is uneven, fabric fold.
Description
Technical field
The present invention relates to stitching process fields, more particularly to a kind of foot pressure adjusting method based on overedger.
Background technique
Overedger is mainly used for the lock seaming sewing of textile, has a wide range of applications in sewing field.Existing overedger
Foot pressure regulating mechanism be usually to pass through elasticity possessed by pressure spring, adapt to raising and reducing for presser feet, generating pressure makes
Presser feet can compress cloth, be conducive to sewing.Since elastic force is different when elongation or shortening for pressure spring, when sewing fabric is by thin change
When thickness or appearance stalk seam, it is unsmooth that foot pressure increase causes sewing fabric to pass through, and has Caton phenomenon, blocks up sewing machine
Line, fabric fold, the problems such as stitching is uneven.
Therefore, common overedger usually occur when sewing the situation of some fabric unevenness quilt it is poor quality or
The case where scrapping.
Summary of the invention
Based on this, it is necessary to for overedger in the technical problem for sewing some fabric unevenness, provide a kind of based on overseam
The foot pressure adjusting method of machine.
In order to achieve the above objectives, present invention employs following technical proposals: a kind of foot pressure adjusting based on overedger
Method, comprising the following steps:
Default initial pressure；
Manually adjust manual adjustment, until pressure between presser feet and needle plate meet it is default；
Carry out work feed；
Real-time detection cloth is thick during work feed；
Operating pressure is calculated according to the cloth thickness, and foot pressure is automatically adjusted by foot pressure regulating mechanism.
The foot pressure regulating mechanism includes: in one of the embodiments,
Force-applying piece, for automatically adjusting foot pressure；
The driving mechanism for driving the force-applying piece to be axially moved along it；
What is be flexibly connected with the force-applying piece is used to manually adjust the manual adjustment of presser feet height；
Keep the locking piece of relative position between the manual adjustment and the force-applying piece；
Act on the elastic conducting power part between the manual adjustment and presser feet.
The driving mechanism is stepper motor in one of the embodiments, is passed through between the stepper motor and force-applying piece
Transmission mechanism linkage, the transmission mechanism include:
Worm screw is connected in the output shaft of the stepper motor,
Transmission arm, the transmission arm are swung around a fixed axis, and one end of the transmission arm has to be meshed with the worm screw
Driving cog, the other end of the transmission arm is connected with force-applying piece.
The force-applying piece is inner screw sheath in one of the embodiments, and the manual adjustment is threaded through inner screw sheath
It is interior, and be threadedly engaged between inner screw sheath.
The locking piece is locking nut in one of the embodiments, and the locking nut is mounted on the manual tune
It offsets on section part and with inner screw sheath axial end face.
The outer wall of the inner screw sheath is fixed with connection handle in one of the embodiments, and the pin shaft is threaded through the company
It connects on handle.
The periphery of the manual adjustment has a limited step, the elastic conducting power part in one of the embodiments,
For helical spring, described helical spring one end offsets with presser feet, the helical spring other end be socketed on the manual adjustment and with
The limited step offsets.
The overedger further includes Thickness sensitivity module in one of the embodiments, and the Thickness sensitivity module is used for
Detect the thickness of cloth.
The Thickness sensitivity module includes Hall element and magnetic part, the Hall element in one of the embodiments,
And magnetic part phase interworking is suitable, the Thickness sensitivity module detects the thickness of cloth by hall principle.
The Thickness sensitivity module includes ultrasonic distance sensor, infrared Distance-sensing in one of the embodiments,
At least one of device, optical distance sensor, pressure sensor.
A kind of foot pressure adjusting method based on overedger provided by the invention, adjusts presser feet in real time in sewing process
The pressure of plate and needle plate keeps sewing machine smoothly smooth when crossing thicker than stalk, improves stitching unevenness to match different-thickness fabric,
The phenomenon that fabric fold.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the overedger of one embodiment of the invention；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is that the regulating mechanism in Fig. 1 has the schematic perspective view that compression bar covers；
Fig. 4 is the structural schematic diagram in the regulating mechanism in Fig. 3 not with compression bar set；
The part body schematic diagram for the pressure regulating mechanism that Fig. 5 is Fig. 3；
Fig. 6 is the configuration schematic diagram of Fig. 5；
Fig. 7 is the structural schematic diagram of the transmission arm in Fig. 5；
Fig. 8 is the structural schematic diagram of the presser foot device in Fig. 3；
Fig. 9 is the flow diagram of the foot pressure adjusting method based on overedger in one embodiment of the present invention.
Main element symbol description
Following specific embodiment will further illustrate the present invention in conjunction with attached drawing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being installed in " another component
Or there may also be components placed in the middle.When a component is considered as " being set to " another component, it, which can be, is directly set
Set on another component or may be simultaneously present component placed in the middle.When a component is considered as " being fixed on " another group
Part, it, which can be, is directly anchored on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases
Any and all combinations of the listed item of pass.
Also referring to Fig. 1-8, it further includes being installed on that one embodiment of the invention, which provides a kind of overedger, including shell 10,
Presser foot device 30 on shell 10, presser foot device 30 are used to compress the cloth that conveying comes.
The structural schematic diagram of presser foot device 30 as shown in Figure 8, presser foot device 30 are installed in shell 10, presser foot device 30
The cloth come for compressing conveying, so that cloth is in the state being moderately tensioned, to improve the quality of head sewing processing.Pressure
Foot mechanism 30 includes presser feet axis 31, presser feet arm 32, presser feet bracket 33 and pressure foot 34, and presser feet axis 31 is installed on the housing 10 simultaneously
It can be rotated relative to shell 10, one end of presser feet axis 31 is connected to presser feet arm 32, and the setting of presser feet bracket 33 is opposite in presser feet arm 32
On the other end of presser feet axis 31, pressure foot 34 is arranged on presser feet bracket 33 and can rotate relative to presser feet bracket 33.Presser feet axis
31 for driving presser feet arm 32 to rotate, so as to adjust the setting angle of entire presser foot device 30；Presser feet arm 32 is used to support presser feet
Bracket 33；Presser feet bracket 33 is used to support pressure foot 34.By the rotation of presser feet axis 31 and pressure foot 34 with respect to presser feet bracket
33 rotation, to realize two axial adjustment of pressure foot 34.
Since during sewing, pressure foot 34 is remained unchanged by the pressure between presser foot device 30 and cloth, when
For sewing fabric by Bao Bianhou or when there is stalk seam, it is unsmooth that foot pressure increase causes sewing fabric to pass through, and has Caton phenomenon,
To improve this phenomenon, the present invention provides a kind of foot pressure regulating mechanism 70 to change the pressure between pressure foot 34 and needle plate 13
Power, such as the structural schematic diagram that Fig. 3 and Fig. 4 is foot pressure regulating mechanism 70, foot pressure regulating mechanism 70 includes:
Force-applying piece 73,
The driving mechanism 74 for driving the force-applying piece 73 to move along direction of exerting pressure of the pressure foot 34 to needle plate 13；
The manual adjustment 76 being flexibly connected with the force-applying piece 73；
Keep the locking piece 77 of relative position between the manual adjustment 76 and the force-applying piece 73；
Act on the elastic conducting power part 78 between the manual adjustment 76 and pressure foot 34.
In the present embodiment, applied for changing the foot pressure regulating mechanism 70 of the pressure between pressure foot 34 and needle plate 13
In on overedger, wherein needle plate 13 is horizontally disposed and height remains unchanged, at least vertical 13 direction of needle plate of direction of exerting pressure
Component.
Pressure size between pressure foot 34 and needle plate 13 is influenced by elastic conducting power part 78, and elastic conducting power part 78 is being pressed
Pressure is passed into pressure foot 34 in the state of contracting or stretching.The compressive state of elastic conducting power part 78 passes through manual adjustment 76
It is adjusted.When manual adjustment 76 pushes, elastic conducting power part 78 is compressed, and the pressure between pressure foot 34 and needle plate 13 increases
Add；When timing on manual adjustment 76, elastic conducting power part 78 is stretched, and the pressure between pressure foot 34 and needle plate 13 reduces.
The pushing or up-regulation of manual adjustment 76 have automatically and manually both of which.Wherein, manual mode mainly leads to
Cross the relative position that operator manually controls manual adjustment 76.Automatic mode passes through the force added and be driven the driving of mechanism 74
Part 73 is to control the relative position of manual adjustment 76.
In automatic mode, force-applying piece 73 and manual adjustment 76 are whole, and driving mechanism 74 drives force-applying piece 73 to move
When, drive 76 height and position of manual adjustment to change, thus the elastic conducting that compression or stretching are connected with manual adjustment 76
Power part 78 is to change the pressure between pressure foot 34 and needle plate 13.
In a manual mode, force-applying piece 73 keeps height and position constant, and manual adjustment 76 is relative to force-applying piece 73 along pressure
Sole 34 changes relative position to the direction of exerting pressure of needle plate 13.It can be movable relatively between force-applying piece 73 and manual adjustment 76, from
And it compresses or stretches the elastic conducting power part 78 being connected with manual adjustment 76 to change the pressure between pressure foot 34 and needle plate 13.
Further, it after with respect to force-applying piece 73 change in location occurs for manual adjustment 76, is locked with locking piece 77 to keep
The relative position of manual adjustment 76 and force-applying piece 73, to keep the pressure between pressure foot 34 and needle plate 13 constant.
Overedger controls the pressure between pressure foot 34 and needle plate 13 before sewing, through manual mode manual adjustment, produces
Raw pretightning force；When overedger is during sewing, and sewing fabric is stitched by the thin perhaps appearance stalk that thickens or is thinning by thickness, lead to
The pressure that automatic mode adjusts pressure foot 34 Yu needle plate 13 in real time is crossed, reaches 34 real-time matching different-thickness fabric of pressure foot, makes
Overedger sews smooth, the phenomenon that improving stitching uneven, fabric fold when fabric is crossed thicker than stalk.
To realize 34 real-time matching different-thickness fabric of pressure foot, foot pressure adjusts machine in one of the embodiments,
Structure 70 further includes the Hall detection apparatus 742 that opposite needle plate 13 was fixedly mounted, detected the thickness of cloth on needle plate 13, the Hall
Detection device 742 and the driving mechanism 74 are communicated to connect to send detection data.
It is appreciated that for the automatic mode for realizing the pressure for adjusting pressure foot 34 and needle plate 13 in real time, foot pressure is adjusted
Mechanism 70 has additional Hall detection apparatus 742, the thickness of cloth on real-time detection needle plate 13, and sends the thickness comprising cloth
Detection data sends electric signal to driving mechanism 74 to control circuit board, then by control circuit board, and then force-applying piece 73 is driven to transport
The dynamic pressure to adjust pressure foot 34 Yu needle plate 13 in real time.
The driving mechanism 74 is stepper motor 741, the stepper motor 741 and force-applying piece in one of the embodiments,
It is linked between 73 by transmission mechanism 75, the transmission mechanism 75 includes:
Worm screw 751 is connected in the output shaft 7411 of the stepper motor 741,
Transmission arm 752, the transmission arm 752 are swung around a fixed axis, and one end of the transmission arm 752 has and the snail
The other end of the driving cog 7521 that bar 751 is meshed, the transmission arm 752 is connected with force-applying piece 73.
It is appreciated that the output shaft 7411 of stepper motor 741 is equipped with worm screw 751, stepper motor 741 passes through output shaft
7411 rotate driving worm screw 751 is rotated about axis, and worm screw 751 is meshed with the driving cog 7521 of 752 one end of transmission arm, states biography
The other end of swing arm 752 is connected with force-applying piece 73.
The worm screw 751 of rotation drives the end of engagement of transmission arm 752 to rise or fall.The transmission arm 752 passes through fixed pin shaft
753 fix on the housing 10, and transmission arm 752 is swung around the fixed axis where fixed pin shaft 753, wherein 753 phase of fixed pin shaft
When in for pivot, there is a fixed axis.When the worm screw 751 of rotation drives the end of engagement of transmission arm 752 to rise, transmission arm
752 other end decline, and then force-applying piece 73 is driven to decline；When the worm screw 751 of rotation drives the end of engagement decline of transmission arm 752
When, the other end of transmission arm 752 rises, and then force-applying piece 73 is driven to rise.
The structural schematic diagram of transmission arm 752 as shown in Figure 7 in one of the embodiments,.The transmission arm 752 it is another
One end offers strip-shaped hole 7522, by being threaded through in strip-shaped hole 7522 between the force-applying piece 73 and the transmission arm 752
Pin shaft 754 is rotatablely connected.
It is appreciated that for the other end linkage force-applying piece 73 for realizing transmission arm 752, the other end and force of transmission arm 752
Part 73 is connected by pin shaft 754, and when transmission arm 752 is swung around fixed axis, the motion profile of the other end of transmission arm 752 is circle
The motion profile of shape, force-applying piece 73 makes pin shaft 754 exist for straight line by opening up strip-shaped hole 7522 in the other end of transmission arm 752
Relative displacement is generated in strip-shaped hole 7522 to keep force-applying piece 73 linearly to move always.More specifically, transmission arm 752
The other end be convenient for connecting force-applying piece 73, equipped with one for connecting the accommodation groove 7523 of force-applying piece 73.
The force-applying piece 73 is inner screw sheath in one of the embodiments, and the manual adjustment 76 is threaded through interior spiral shell
In line set, and it is threadedly engaged between inner screw sheath.
It is appreciated that manual adjustment 76 and being threaded through in inner screw sheath, 76 periphery of manual adjustment is equipped with external screw thread.Packet
Seam machine before sewing, inner screw sheath with respect to shell 10 be fixedly mounted, by rotary manual regulating part 76, manual adjustment 76 with it is interior
Thread bush generates rotation, to adjust pressure foot 34 to the pressure of needle plate 13.Overedger during sewing, inner screw sheath and manually
Regulating part 76 be threadedly engaged it is relatively fixed, inner screw sheath under the drive of driving mechanism 74, drive manual adjustment 76 generate phase
Variation to position.
The outer wall of the inner screw sheath is fixed with connection handle 731 in one of the embodiments, and the pin shaft 754 is worn
On the connection handle 731.It is described convenient for inner screw sheath is connected with the other end of transmission arm 752 by adding connection handle 731
Pin shaft 754 passes through connection handle 731, and in the strip-shaped hole 7522 of 752 other end of transmission arm.
Specifically, the other end of transmission arm 752 is equipped with the accommodation groove 7523 for accommodating the connection handle 731, realizes transmission arm 752
It is preferably connect between inner screw sheath and linkage.
The locking piece 77 is locking nut in one of the embodiments, and the locking nut is mounted on described manual
It offsets on regulating part 76 and with inner screw sheath axial end face.
It is appreciated that locking nut is matched with the external screw thread of manual adjustment 76.In the pressure for manually adjusting pressure foot 34
Before power, by unscrewing locking nut and manual adjustment 76, by rotary manual regulating part 76, compression or tensile elasticity guiding
Part is to adjust the pressure of pressure foot 34.
Specifically, the manual adjustment 76 is rod-shaped, convenient to cooperate with locking nut.
The periphery of the manual adjustment 76 has a limited step 761, elastic conducting power part in one of the embodiments,
78 one end offsets with pressure foot 34, and the other end of elastic conducting power part 78 is socketed on the manual adjustment 76, and with it is described
Limited step 761 offsets.The limited step 761 that the periphery of manual adjustment 76 is equipped with facilitates positioning elastic to lead power part 78, and benefit
Elastic conducting power part 78 is forced in passing through manual adjustment 76.
In one embodiment, the elastic conducting power part 78 is helical spring.Described helical spring one end and pressure foot
34 offset, and the helical spring other end is socketed on the manual adjustment 76 and offsets with the limited step 761.In other implementations
In example, elastic conducting power part 78 can also using can the elastic component that deformation occurs, such as rubber, air cushion or other kinds of spring.
Foot pressure regulating mechanism 70 further includes being in tilted layout with needle plate 13 to guide pressure in one of the embodiments,
The compression bar set 79 in direction, the inner screw sheath, the elastic conducting power part 78 are set in compression bar set 79, the manual adjustment 76
Compression bar set 79 is stretched out at top, and the locking nut is mounted on the position that manual adjustment 76 stretches out compression bar set 79.Compression bar covers 79 pairs
Inner screw sheath, elastic conducting power part 78 play protection fixed function, and ensure that direction of exerting pressure.
Correspondingly, shell 10 is equipped with the strut kong for accommodating compression bar set 79, and compression bar set 79 is through the fixed peace of strut kong
Loaded on shell, such as can be fixed in such a way that glue bonds.The axis direction and needle plate 13 of compression bar set 79 are at certain
Tilt angle.
Specifically, compression bar set 79 includes upperpush rod set 791 and intermediate sleeve 792, and upperpush rod set 791 is set in inner screw sheath
Periphery, and upperpush rod covers 791 peripheries and is equipped with one and first opens for connection handle 731 from what upperpush rod covered that 791 interior penetrate
Mouth 7911, and first opening 7911 covers in 791 axial directions in upperpush rod with the width moved for connection handle 731.
It is equipped between the elastic conducting power part 78 and pressure foot 34 by elastic conducting power part 78 in one of the embodiments,
Pressure conduction is to the connector 71 of pressure foot 34, and the connector 71 is towards 78 end of elastic conducting power part with a positioning step, bullet
Property leads power part 78 and is socketed in 71 periphery of connector and offsets with positioning step.Specifically, down-pressed pole is equipped in 71 periphery of connector
Set 793, the position for the part 71 that is located to connect.
Foot pressure regulating mechanism 70 further includes controlling the presser feet that pressure foot 34 moves to lift in one of the embodiments,
Bar 72, by forcing in presser feet raising wire 72 so that pressure foot 34 is far from needle plate 13, convenient for by the cloth on needle plate 13 from presser feet
It is detached under plate 34.
Specifically, 71 periphery of connector is equipped with a stress protrusion 711, and presser feet raising wire 72 is abutted against with stress protrusion 711.
Presser feet raising wire 72 is swung around a fixed pivot, and presser feet raising wire 72 is in force, with raised 711 phase separations of stress to incite somebody to action
Pressure foot 34 lifts.Presser feet raising wire 72 has one handle far from raised 711 ends of stress, presses handle, and presser feet raising wire 72 leans on
Nearly raised 711 ends of stress will upwarp, and drive stress protrusion 711 to move upwards, and then drive the pressure foot being connected with connector 71
34 rise.Wherein, hinged mode can be used between presser feet raising wire 72 and stress protrusion 711, or lean.
Correspondingly, the pushing rod set 793 for being set in 71 periphery of connector is offered to be opened for stress protrusion 711 perforative second
Mouth 7931, and second opening 7931 has the width moved for stress protrusion 711 on pushing 793 axial direction of rod set.
Thickness sensitivity module (not shown) can also be arranged on overedger 100 in one of the embodiments, to examine in real time
The thickness of cloth is surveyed, electric control element 6211 can adjust presser feet 34 according to the thickness that Thickness sensitivity module detects and incline to corresponding
Angle and height.
Thickness sensitivity module can be realized pair using the modes such as Hall element, infrared acquisition in one of the embodiments,
The detection of fabric thickness.
Foot pressure regulating mechanism 70 provided by the invention, the phase of manual control manual adjustment 76 before overedger sews
To position, to adjust the pressure between pressure foot 34 and needle plate 13, during overedger sewing, according to the thickness of sewing fabric
Degree, the height and position of automatic real-time control manual adjustment 76 is to adjust the pressure between pressure foot 34 and needle plate 13.Use this
The overseam function of foot pressure regulating mechanism 70 matches different-thickness fabric, sews overedger when fabric is crossed thicker than stalk suitable
Freely, the phenomenon that improving uneven stitching, fabric fold.
Referring to Fig. 9, Fig. 9 is the process of the foot pressure adjusting method based on overedger in one embodiment of the present invention
Schematic diagram.
The foot pressure adjusting method based on overedger is applied on an overedger, and the foot pressure method is used for
Change the pressure between presser feet and needle plate, the foot pressure adjusting method based on overedger includes:
Default initial pressure, specifically, operator sets the pressure of initial presser feet compress.
Manually adjust the height of manual adjustment 76, until pressure between presser feet and needle plate meet it is default, specifically, applying
Power part keeps height and position constant, changes manual adjustment along its axial position.It can phase between force-applying piece and manual adjustment
To movement, so that the elastic conducting power part being connected with manual adjustment be made to compress or extend to change the pressure between pressure foot and needle plate
Power locks the relative position to keep manual adjustment and force-applying piece with locking piece.
Work feed is carried out, specifically, making pressure foot far from needle plate, convenient for cloth to be put between presser feet and needle plate, later
Cloth is pressed on needle plate by presser feet, it is preferred that be can be detected fabric thickness when cloth is pressed on needle plate by presser feet and is adjusted pressure
Foot press power.
Electric motor starting starts work feed, and real-time detection cloth is thick during work feed, specifically, Thickness sensitivity module is examined in real time
Survey the thickness of cloth
Operating pressure is calculated according to the cloth thickness, and foot pressure is automatically adjusted by foot pressure regulating mechanism, specifically
, the thickness for the cloth that Thickness sensitivity module is detected calculates pressure most suitable between presser feet and needle plate, manipulates the drive
Motivation structure simultaneously drives the force-applying piece along its axial movement, adjusts foot pressure, so that presser feet is pushed down cloth with operating pressure, specifically
, the worm screw of rotation drives the end of engagement of transmission arm to rise or fall, and transmission arm is swung around the fixed axis where fixed pin shaft,
When the worm screw of rotation drives the end of engagement of transmission arm to rise, the other end decline of transmission arm, and then drive force-applying piece decline；When
When the worm screw of rotation drives the end of engagement decline of transmission arm, the other end of transmission arm rises, and then force-applying piece is driven to rise, thus
It controls the elastic conducting power part compression being connected with manual adjustment or extends to change pressure suffered by presser feet.
The present invention changes the elongation of elastic conducting power part or compression distance by the way that the regulating mechanism is arranged, to adjust presser feet
Pressure between needle plate.
Specifically, the overedger further includes Thickness sensitivity module, and the Thickness sensitivity module is able to detect the thickness of cloth
Degree, the regulating mechanism adjust the height of itself according to the obtained fabric thickness of detection, in real time and be automatically realized adjusting
Process.
In present embodiment, the Thickness sensitivity module includes Hall element and magnetic part, the Thickness sensitivity module
The thickness for detecting cloth indirectly by hall principle, by Hall effect detect cloth thickness, not only in cost have compared with
Big advantage, anti-interference ability also with higher can adapt to complicated production environment.
Certainly, in other implementations, the Thickness sensitivity module can also be by ultrasonic distance sensor, red
The modes such as outer range sensor, optical distance sensor, pressure sensor come realize to fabric thickness it is direct measurement or
Connect measurement.
In wherein first embodiment, cloth thin and thick is detected by Thickness sensitivity module and thin and thick changes, is passed through
The rotation of electric control system controls stepper motor drives worm screw to make to be driven arm swing, stirs force-applying piece and slides up and down, glides on force-applying piece
It is dynamic that elastic conducting power part decrement is made to change, change the pressure to presser feet, stepping can be passed through when sewing stalk seam, thick charge level material
Motor control foot pressure, passes through fabric, and the situation for avoiding the intensive work feed of stitching unsmooth occurs.By thin and thick detection with
Regulating mechanism is implemented in combination with automatic detection, automatically controls, automatic adjustment.
(1) when stitching sewing machine is compared with grenadine, Thickness sensitivity module detects fabric with a thickness of thin material, and signal is delivered to
Electric-control system, electric-control system make elastic conducting power part decrement be in thin material constricted zone, make by regulating and controlling to stepper motor
Thin stockline mark is more smooth；
(2) when stitching sewing machine medium thickness cloth, Thickness sensitivity module detection fabric is automatically controlled with a thickness of medium cloth
System by regulating and controlling to stepper motor, make elastic conducting power part decrement be in medium thickness material constricted zone make to sew it is medium
Thickness cloth stitching is more beautiful；
(3) when the thicker degree cloth of stitching sewing machine, Thickness sensitivity module detection fabric is automatically controlled with a thickness of thicker cloth
For system by regulating and controlling to stepper motor, so that elastic conducting power part decrement is in thicker cloth constricted zone makes the thicker cloth of sewing
Material is more smooth, and stitching is more uniform；
(4) when stitching sewing machine cloth switchs to thick material from thin material, the thick material signal of Thickness sensitivity module outflow, electric-control system
Identification signal variation, is adjusted stepper motor, and elastic conducting power part decrement reduces, and pressure reduces counteracting presser feet and raises generation
Extra pressure, so that cloth is passed through presser feet, and improve sewing stitching aesthetics.
When stitching sewing machine cloth switchs to thin material from thickness material, Thickness sensitivity module spreads out of thin and thick signal, and electric-control system is known
Level signal variation, is adjusted stepper motor, and the amount of compression increases for elastic conducting power part, offsets presser feet and declines reduced elastic conducting power
Part pressure makes cloth sewing stitching keep best.
It is implemented in combination with automatic detection by thin and thick detection and regulating mechanism, is automatically controlled, automatic adjustment.Thickness sensitivity module
Cloth thin and thick and thin and thick variation can be quickly detected, the variation of electric-control system identification signal passes through electric control system controls stepping electricity
Machine rotation drives worm screw to make to be driven arm swing, stirs force-applying piece and slides up and down, and force-applying piece, which slides up and down, compresses elastic conducting power part
Amount changes, and changes the pressure to presser feet.When sewing stalk seam, thick charge level material can by step motor control foot pressure,
Fabric is passed through, the case where stitching is intensive, work feed is unsmooth, cloth fold generation is avoided, improves stitching aesthetics.
In wherein second embodiment, cloth thin and thick is detected by linear Hall Thickness sensitivity module and thin and thick becomes
Change while exporting different fabrics thickness voltage signal, voltage signal is identified by electric-control system, control stepper motor rotation drives
Worm screw makes to be driven arm swing, and stirring force-applying piece and sliding up and down makes elastic conducting power part decrement change, and changes the pressure to presser feet
Power can be such that fabric passes through, avoid stitching close when sewing stalk seam, thick charge level material by step motor control foot pressure
Collect the unsmooth situation of work feed to occur.It is implemented in combination with automatic detection by Thickness sensitivity module and regulating mechanism, is automatically controlled, automatically
It adjusts in real time.
Electric-control system carries out initial, end voltage value to linear Hall Thickness sensitivity module and identifies, to the voltage after identification
Value range is matched with stepper motor slewing area by experimental test, is calculated between stepper motor and Hall voltage value
Coefficient k, k value includes transmission ratio z1/z2, driving cog both ends length ratio l1/l2 between worm screw and driving cog, according to formula ω=kV
Calculate stepper motor rotational angle.
When a certain thickness cloth of stitching sewing machine, Thickness sensitivity module can export a voltage value, and electric-control system passes through
Voltage value calculates stepper motor rotational angle and then adjusts elastic conducting power part pressure, and sewing function is made to analyze processing cloth in real time
Different-thickness characteristic, makes sewing thread trace reach optimum state.
The present invention is implemented in combination with automatic detection by thin and thick detection and regulating mechanism, automatically controls, automatic to adjust in real time.It is thick
Degree detection module can quickly detect cloth thin and thick and thin and thick variation, and the variation of electric-control system identification signal quick and precisely controls
Stepper motor rotary dial force-applying piece slides up and down, and changes the position of force-applying piece, and regulating mechanism pressure is made to remain best seam
It threads mode.Fabric is passed through, the case where stitching is intensive, work feed is unsmooth, cloth fold generation is avoided, it is beautiful to improve stitching
Degree.
In wherein third embodiment, is rotated by electric control system controls stepper motor and worm screw is driven to put transmission arm
It is dynamic, it stirs force-applying piece and slides up and down, force-applying piece, which slides up and down, makes elastic conducting power part decrement change, and changes the pressure to presser feet
Power can be such that fabric passes through, avoid stitching close when sewing stalk seam, thick charge level material by step motor control foot pressure
Collect the unsmooth situation of work feed to occur.It is implemented in combination with automatic detection by thin and thick detection and regulating mechanism, is automatically controlled, it is automatic to adjust
Section.
(1) when stitching sewing machine is compared with grenadine, the settable thin material mode of operator, electric control system controls stepper motor into
The thin material regulating mechanism pressure setting of row is allowed to adapt to thin material sewing, keeps thin stockline mark more smooth；
(2) when stitching sewing machine medium thickness cloth, the settable middle thick material mode of operator, electric-control system passes through to step
Regulated and controled into motor, regulating mechanism decrement is made to be in medium thickness constricted zone, makes to sew medium thickness cloth stitching more
Add beauty；
(3) when the thicker cloth of stitching sewing machine, the settable thick material mode of operator, electric-control system passes through to stepper motor
Regulated and controled, compression bar decrement is made to be in thicker cloth constricted zone, keeps the thicker cloth of sewing more smooth, stitching is more equal
It is even；
The present invention realizes that manual third gear is adjusted by control operation panel, and electric control system controls stepper motor is to regulating mechanism
Decrement automatically adjusts.Operator can quickly carry out thin material, middle thick material, thick material third gear and be configured, and accurately control step
It is slided up and down into motor rotary dial force-applying piece, changes the pressure to elastic conducting power part.As sewing different-thickness fabric Shi Ketong
Key setting setting foot pressure is crossed, fabric is passed through, avoids the case where stitching is intensive, work feed is unsmooth, cloth fold hair
It is raw, improve stitching aesthetics.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of foot pressure adjusting method based on overedger, which comprises the following steps:
Default initial pressure；
Manually adjust manual adjustment, until pressure between presser feet and needle plate meet it is default；
Carry out work feed；
Real-time detection cloth is thick during work feed；
Operating pressure is calculated according to the cloth thickness, and foot pressure is automatically adjusted by foot pressure regulating mechanism.
2. the foot pressure adjusting method according to claim 1 based on overedger, which is characterized in that the foot pressure
Regulating mechanism includes:
Force-applying piece, for automatically adjusting foot pressure；
The driving mechanism for driving the force-applying piece to move along its axial direction；
What is be flexibly connected with the force-applying piece is used to manually adjust the manual adjustment of presser feet height；
Keep the locking piece of relative position between the manual adjustment and the force-applying piece；
Act on the elastic conducting power part between the manual adjustment and presser feet.
3. the foot pressure adjusting method according to claim 2 based on overedger, which is characterized in that the driving mechanism
It for stepper motor, is linked between the stepper motor and force-applying piece by transmission mechanism, the transmission mechanism includes:
Worm screw is connected in the output shaft of the stepper motor,
Transmission arm, the transmission arm are swung around a fixed axis, and one end of the transmission arm has the biography being meshed with the worm screw
The other end of movable tooth, the transmission arm is connected with force-applying piece.
4. the foot pressure adjusting method according to claim 3 based on overedger, which is characterized in that the force-applying piece is
Inner screw sheath, the manual adjustment is threaded through in inner screw sheath, and is threadedly engaged between inner screw sheath.
5. the foot pressure adjusting method according to claim 4 based on overedger, which is characterized in that the locking piece is
Locking nut, the locking nut are mounted on the manual adjustment and offset with inner screw sheath axial end face.
6. the foot pressure adjusting method according to claim 5 based on overedger, which is characterized in that the inner screw sheath
Outer wall be fixed with connection handle, the pin shaft is threaded through on the connection handle.
7. the foot pressure adjusting method according to claim 6 based on overedger, which is characterized in that described to manually adjust
The periphery of part has a limited step, and the elastic conducting power part is helical spring, and described helical spring one end offsets with presser feet, spiral shell
The rotation spring other end is socketed on the manual adjustment and offsets with the limited step.
8. the foot pressure adjusting method according to claim 1 based on overedger, which is characterized in that the overedger is also
Including Thickness sensitivity module, the Thickness sensitivity module is used to detect the thickness of cloth.
9. the foot pressure adjusting method according to claim 8 based on overedger, which is characterized in that the Thickness sensitivity
Module includes Hall element and magnetic part, and the Hall element and magnetic part phase interworking are suitable, and the Thickness sensitivity module is by suddenly
The thickness of your principle detection cloth.
10. the foot pressure adjusting method according to claim 8 based on overedger, which is characterized in that the thickness inspection
Surveying module includes ultrasonic distance sensor, infrared distance sensor, optical distance sensor, at least one in pressure sensor
It is a.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575628.9A CN109629126B (en) | 2018-12-22 | 2018-12-22 | Presser foot pressure adjusting method based on overedger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575628.9A CN109629126B (en) | 2018-12-22 | 2018-12-22 | Presser foot pressure adjusting method based on overedger |
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| TW200718816A (en) * | 2005-11-08 | 2007-05-16 | Taiwan Janome Sewing Machine Co Ltd | Free work pressing device for sewing machine |
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| CN204662015U (en) * | 2015-05-26 | 2015-09-23 | 平湖市茂华制衣厂 | A kind of regulator of sewing-machine foot |
| CN205874676U (en) * | 2016-08-12 | 2017-01-11 | 浙江青本缝纫机有限公司 | Presser foot's drive structure |
| CN107268190A (en) * | 2016-04-05 | 2017-10-20 | Juki株式会社 | Sewing machine |
| CN107354601A (en) * | 2017-08-10 | 2017-11-17 | 西安标准工业股份有限公司 | A kind of sewing machine adjustment foot pressure device and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200718816A (en) * | 2005-11-08 | 2007-05-16 | Taiwan Janome Sewing Machine Co Ltd | Free work pressing device for sewing machine |
| JP4848176B2 (en) * | 2005-11-08 | 2011-12-28 | 蛇の目ミシン工業株式会社 | Sewing machine free presser |
| CN202107875U (en) * | 2011-05-04 | 2012-01-11 | 张章生 | Middle foot pressing mechanism of sewing machine |
| CN204662015U (en) * | 2015-05-26 | 2015-09-23 | 平湖市茂华制衣厂 | A kind of regulator of sewing-machine foot |
| CN107268190A (en) * | 2016-04-05 | 2017-10-20 | Juki株式会社 | Sewing machine |
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