CN107059270A - A kind of sewing machine and its damper mechanism - Google Patents
A kind of sewing machine and its damper mechanism Download PDFInfo
- Publication number
- CN107059270A CN107059270A CN201611236783.9A CN201611236783A CN107059270A CN 107059270 A CN107059270 A CN 107059270A CN 201611236783 A CN201611236783 A CN 201611236783A CN 107059270 A CN107059270 A CN 107059270A
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- CN
- China
- Prior art keywords
- connecting rod
- sewing machine
- suture needle
- barycenter
- power transmission
- 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.)
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Classifications
-
- 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
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
Abstract
The present invention relates to a kind of damper mechanism of sewing machine, suture needle connecting rod, which pumps, can produce the inertia force of vertical direction, and looper connecting rod bilateral reciprocation can produce the inertia force of left and right directions；When suture needle connecting rod is moved downward, the inertia force that suture needle connecting rod is produced has larger component straight down, and now, the barycenter of additional counterweight is upward deflected, and additional counterweight can produce component straight up；When suture needle connecting rod is moved upwards, the inertia force that suture needle connecting rod is produced has larger component straight up, and now, the barycenter of additional counterweight is deflected down, and additional counterweight can produce component straight down.As can be seen here, additional counterweight can offset the inertia force that the original part of sewing machine is produced, so, a kind of damper mechanism of sewing machine of the invention can reduce vibration and the noise of sewing machine, reduce the abrasion that moving parts move vice division chief, improve the operating environment of operating personnel.
Description
Technical field
The present invention relates to a kind of sewing machine and its damper mechanism, more particularly to a kind of industrial sewing machine and its vibration damping machine
Structure.
Background technology
Sewing machine is widely used in the processing occasion such as garment production, fabrics, packaging.With industrial expansion, sewing machine
Production efficiency more and more higher, there is a fairly large number of fortune inside industrial sewing machine in the sewing velocity of sewing machine also more and more higher
Dynamic component, its own center of gravity position is focused on by the quality of each moving component, and center of gravity is also often referred to as barycenter, machine
When device runs at high speed, the position generating period change of above-mentioned particle spatially, and because movement velocity is very fast, unavoidably
Ground will produce larger inertia force；On the one hand, these inertia force are ultimately applied to machine by drive disk assembly (such as connecting rod, connecting lever)
On frame, complete machine is set to show as violent vibration；On the other hand, these inertia force will form resultant couple, i.e. moment of inertia simultaneously, make
Machine has the trend toppled, and can equally increase the vibration of machine.This vibration can not only produce ear-piercing noise, can also aggravate fortune
The abrasion of dynamic part movement vice division chief, influence machine operation precision and reliability, the physical and mental health to operating personnel cause damage.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of sewing machine and its vibration damping machine
Structure, can reduce the vibration of sewing machine.
To achieve the above object, the present invention provides a kind of damper mechanism of sewing machine, adopts the following technical scheme that：One kind seam
Thread the damper mechanism of machine, including power transmission shaft, looper connecting rod and suture needle connecting rod, the power transmission shaft perpendicular to looper connecting rod,
Drive rocker is socketed with power transmission shaft；When sewing machine works, the power transmission shaft forward or reverse, so as to drive the end of drive rocker
Portion swings, and then drives looper connecting rod bilateral reciprocation；The suture needle connecting rod pumps；The transmission
Additional counterweight is connected with axle, when suture needle connecting rod is moved downward, the barycenter of the additional counterweight is upward deflected；Work as seam
When pin connecting rod is moved upwards, the barycenter of the additional counterweight is deflected down.
Preferably, when looper connecting rod is to left movement, the barycenter of additional counterweight is deflected to the right；When looper connecting rod to
During right motion, the barycenter of additional counterweight is deflected to the left.
Preferably, the barycenter of the additional counterweight is located on the right side of the axle center of power transmission shaft, and the barycenter position of additional counterweight
In the left side of suture needle connecting rod.
Preferably, when suture needle connecting rod is moved downward to minimum point, the barycenter of the additional counterweight and power transmission shaft
The angle between line and vertical direction between axle center is 35-75 degree；When suture needle connecting rod is moved upward to peak,
The angle between line and vertical direction between the barycenter of the additional counterweight and the axle center of power transmission shaft is 0-40 degree.
Preferably, the power transmission shaft is connected with rotating shaft transmission once, and lower rotary shaft is provided with a crank portion, and crank portion is provided with one
First jointed shaft of the section parallel to lower rotary shaft；Lower axle connecting rod is hinged with first jointed shaft, the lower end of lower axle connecting rod is provided with a ball
Face hinge hole；Driven rocking bar is socketed with the power transmission shaft, driven rocking bar is set perpendicular to the power transmission shaft, the end of driven rocking bar
There is the sphere articulated joint that cooperation is hinged with the sphere hinge hole.
Preferably, the drive rocker is perpendicular to the power transmission shaft, and the upper end of drive rocker is provided with a drive block, and looper connects
Two stop blocks are further fixed on extension bar, the drive block is located between two stop blocks.
With the present invention a kind of sewing machine damper mechanism correspondingly, the present invention a kind of sewing machine is also provided, using as follows
Technical scheme：A kind of sewing machine, includes the vibration damping machine of above-mentioned technical proposal or the sewing machine described in any preferred technical scheme
Structure.
As described above, a kind of damper mechanism of sewing machine of the present invention, has the advantages that：The one of the present invention
The damper mechanism of sewing machine is planted, suture needle connecting rod, which pumps, can produce the inertia force of vertical direction, looper connecting rod is left
Right reciprocating motion can produce the inertia force of left and right directions；When suture needle connecting rod is moved downward, the inertia that suture needle connecting rod is produced
Power has larger component straight down, and now, the barycenter of additional counterweight is upward deflected, and additional counterweight can produce perpendicular
Straight upward component；When suture needle connecting rod is moved upwards, suture needle connecting rod produce inertia force have it is larger straight up
Component, and now, the barycenter of additional counterweight is deflected down, and additional counterweight can produce component straight down.Thus may be used
See, additional counterweight can offset the inertia force that the original part of sewing machine is produced, so, a kind of vibration damping of sewing machine of the invention
Mechanism can reduce vibration and the noise of sewing machine, reduce the abrasion that moving parts move vice division chief, improve the operation of operating personnel
Environment.
Brief description of the drawings
Fig. 1 is shown as the stereochemical structure signal of the motion of sewing machine and the balance weight being connected on motion
Figure；
The front view of the motion for the sewing machine that Fig. 2 is shown as in Fig. 1 and the balance weight being connected on motion；
Fig. 3 is shown as from Fig. 2 the parts such as suture needle connecting rod, upper axle connecting rod, connecting lever and the upper spindle balance block from F directions
Connection diagram；
Fig. 4 is shown as in Fig. 2 the diagrammatic cross-section at A-A, only shows the parts such as lower axle connecting rod, rotating disk；
Fig. 5 is shown as upper rotating shaft from the positive apparent direction in Fig. 2, lower axle connecting rod, driven rocking bar, power transmission shaft and additional
The attachment structure schematic diagram of balance weight；
Fig. 6 is shown as looper connecting rod, drive rocker, power transmission shaft and additional equilibrium from the positive apparent direction in Fig. 2
The attachment structure schematic diagram of block；
Fig. 7 is shown as the inertia force direction that the motion of sewing machine and the balance weight being connected on motion are produced
Schematic diagram；
Fig. 8 is shown as the parameter schematic diagram of balance weight；
Fig. 9 is shown as the complete machine of vibration-proof structure of sewing machine of the present invention a kind of, upper spindle balance block, lower axle balance weight, attached
Plus balance weight is in the phase schematic diagram of the inertia force component of vertical direction；
Figure 10 is shown as the phase schematic diagram of complete machine, upper spindle balance block in the inertia force component of vertical direction；
Figure 11 is shown as the phase schematic diagram of complete machine, lower axle balance weight in the inertia force component of vertical direction；
Figure 12 is shown as the phase schematic diagram of complete machine, additional counterweight in the inertia force component of vertical direction；
Figure 13 is shown as the phase schematic diagram of complete machine, additional counterweight in the inertia force along looper connecting rod axis direction；
Description of reference numerals
The sphere hinge hole of rotating shaft 12 on 1
The driven rocking bar of 2 lower rotary shaft 13
The sphere articulated joint of 3 power transmission shaft 14
The drive rocker of 4 suture needle connecting rod 15
The drive block of 5 looper connecting rod 16
The stop block of spindle balance block 17 on 6
Axle connecting rod on 7 lower axle balance weights 18
The secter pat of 8 additional counterweight 19
The connecting lever of 9 terminal pad 20
The jointed shaft of 10 first jointed shaft 21 second
11 lower axle connecting rods
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate specification to be taken off
The content shown, so that those skilled in the art is understood with reading, is not limited to enforceable qualifications of the invention, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the present invention
Under the effect that can be generated and the purpose that can reach, it all should still fall and obtain the model that can cover in disclosed technology contents
In enclosing.Meanwhile, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " is also only
It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence
Change under technology contents, when being also considered as enforceable category of the invention.
Below in the explanation of the technical scheme of embodiments of the invention, " first ", " second " are for only for ease of pair
The title of each parts makes a distinction, and is not to be limited for the structure or functions of each parts；" rotating forward ", " reversion "
Only it is two relative direction of rotation, " rotating forward " not necessarily clockwise or counterclockwise, reversion is also not necessarily up time
Pin or rotate counterclockwise.
As depicted in figs. 1 and 2, the damping of a kind of sewing machine of the invention, including power transmission shaft 3, the and of looper connecting rod 5
Suture needle connecting rod 4, the power transmission shaft 3 is socketed with drive rocker 15 in looper connecting rod 5, power transmission shaft 3；Sewing machine works
When, the forward or reverse of power transmission shaft 3 so as to drive the end of drive rocker 15 to swing, and then drives looper connecting rod 5
Bilateral reciprocation；The suture needle connecting rod 4 pumps；Additional counterweight 8 is connected with the power transmission shaft 3, works as seam
When pin connecting rod 4 is moved downward, the barycenter of the additional counterweight 8 is upward deflected；When suture needle connecting rod 4 is moved upwards, institute
The barycenter for stating additional counterweight 8 is deflected down.A kind of damper mechanism of sewing machine of the present invention, suture needle connecting rod is up and down reciprocatingly transported
Dynamic to produce the inertia force of vertical direction, looper connecting rod bilateral reciprocation can produce the inertia force of left and right directions；Work as suture needle
When connecting rod is moved downward, the inertia force that suture needle connecting rod is produced has larger component straight down, and now, adds flat
The barycenter of weighing apparatus block is upward deflected, and additional counterweight can produce component straight up；When suture needle connecting rod is moved upwards, suture needle
The inertia force that connecting rod is produced has larger component straight up, and now, the barycenter of additional counterweight is deflected down, attached
Plus balance weight can produce component straight down.As can be seen here, additional counterweight can offset what the original part of sewing machine was produced
Inertia force, so, a kind of damper mechanism of sewing machine of the invention can reduce vibration and the noise of sewing machine, reduce motion zero
Part moves the abrasion of vice division chief, improves the operating environment of operating personnel.
As depicted in figs. 1 and 2, sewing machine also includes the upper rotating shaft 1 that is parallel to each other and lower rotary shaft 2, suture needle connecting rod 4 with it is upper
Rotating shaft 1 is connected, and the lower end of suture needle connecting rod 4 is to install suture needle, and suture needle connecting rod 4 is perpendicular to upper rotating shaft 1 and lower rotary shaft
2, looper connecting rod 5 is connected with lower rotary shaft 2, and the right-hand member of looper connecting rod 5 is parallel to install looper, looper connecting rod 5
In lower rotary shaft 2, power transmission shaft 3 is used to the rotation of lower rotary shaft 2 is changed and is driven to looper connecting rod 5 so that looper connecting rod 5
Bilateral reciprocation, when sewing machine works, the upper rotating shaft 1 rotates and drives suture needle connecting rod 4 to pump；Lower rotary shaft
2 rotate and simultaneously drive the forward or reverse of power transmission shaft 3, the reciprocally forward or reverse in certain angle of power transmission shaft 3, so as to drive looper
The bilateral reciprocation of connecting rod 5；Suture needle connecting rod 4 and looper connecting rod 5, which cooperate, moves and drives suture needle and looper to complete
Sew operation；Spindle balance block 6 is connected with upper rotating shaft 1, lower axle balance weight 7 is connected with lower rotary shaft 2, in power transmission shaft 3
On be connected with additional counterweight 8, when sewing machine works, the suture needle connecting rod 4 of sewing machine pump can produce it is vertical
The inertia force in direction, the bilateral reciprocation of looper connecting rod 5 can produce the inertia force along the axial direction of looper connecting rod 5；Due to
Spindle balance block 6 is connected with upper rotating shaft 1, lower axle balance weight 7 is connected with lower rotary shaft 2, upper spindle balance block 6 is with upper rotating shaft 1
The inertia force of vertical direction, root can be produced with the rotation of lower rotary shaft 2 by rotating the inertia force that can produce vertical direction, lower axle balance weight 7
Set according to the actual conditions of inertia force of the sewing machine when not installing spindle balance block 6, lower axle balance weight 7 and additional counterweight 8
Phase angle of phase angle and lower axle balance weight 7 of the spindle balance block 6 in upper rotating shaft 1 on lower rotary shaft 2 is put, makes suture needle
The inertia force produced by inertia force direction and upper spindle balance block 6, lower axle balance weight 7 produced by connecting rod 4 is in opposite direction, on
Inertia force produced by spindle balance block 6 and lower axle balance weight 7 can just be offset produced by suture needle connecting rod 4 partially or completely
Inertia force；According to the reality of inertia force of the sewing machine when not installing spindle balance block 6, lower axle balance weight 7 and additional counterweight 8
Situation and phase angle of the additional counterweight 8 on power transmission shaft 3 is set, make inertia force direction produced by looper connecting rod 5 and
Inertia force produced by additional counterweight 8 is in opposite direction, and the inertia force produced by additional counterweight 8 just can be partially or completely
Offset the inertia force produced by looper connecting rod 5.So, a kind of damper mechanism for sewing machine that the present invention is provided can reduce seam
Thread machine vibration, reduce sewing machine produce noise, reduce sewing machine mechanical wear, improve sewing machine service life, change
The working environment of kind operating personnel.
In a kind of damper mechanism of sewing machine of the present invention, when suture needle connecting rod 4 is moved down, sewing machine original zero
The inertia force that part (such as, suture needle connecting rod 4) is produced to the frame of sewing machine is downward, now, the barycenter of the upper spindle balance block 6
Higher than the axle center of upper rotating shaft 1；Inertia force (inertia force size and side produced by upper spindle balance block 6 produced by upper spindle balance block 6
To identical with the centrifugal force produced by upper spindle balance block 6) there is upward component；When suture needle connecting rod 4 is moved upward to highest
During point, the inertia force that the original part of sewing machine is produced to the frame of sewing machine is upward, now, the barycenter of the upper spindle balance block 6
Less than the axle center of upper rotating shaft 1, the inertia force produced by upper spindle balance block 6 has downward component；Institute's above spindle balance block 6 is produced
Raw inertia force has negative function to the inertia force produced by the original part of sewing machine.
In a kind of damper mechanism of sewing machine of the present invention, lower rotary shaft 2 is connected with power transmission shaft 3, and lower rotary shaft 2 is rotated
The forward or reverse in the range of certain angle of power transmission shaft 3 can be driven, as a preferred embodiment, as shown in figure 4, figure
O is the axis of rotation of lower rotary shaft 2 in 4, and lower rotary shaft 2 is provided with terminal pad 9, terminal pad 9 with lower rotary shaft 2 is coaxial is fixedly disposed,
Terminal pad 9 is driven by lower rotary shaft 2 and rotated；Terminal pad 9 is provided with one section of first jointed shaft 10 parallel to lower rotary shaft 2；First
Lower axle connecting rod 11 is hinged with jointed shaft 10, incorporated by reference to Fig. 4 Fig. 5, the lower end of lower axle connecting rod 11 is provided with a sphere hinge hole 12；Institute
State and driven rocking bar 13 is socketed with power transmission shaft 3, driven rocking bar 13 is provided with perpendicular to the power transmission shaft 3, the end of driven rocking bar 13
The sphere articulated joint 14 of cooperation is hinged with the sphere hinge hole 12, so, lower rotary shaft 2 is rotated, and can drive lower axle connecting rod 11
Upper end is rotated around the axle center of lower rotary shaft 2, and the lower end of lower axle connecting rod 11 is hinged with driven rocking bar 13, and lower axle connecting rod 11 is driven from shaking
The sphere articulated joint 14 of bar 13 is swung up and down, so as to drive the forward or reverse of power transmission shaft 3, (in Fig. 4, power transmission shaft 3 is in certain angle
In the range of clockwise or counterclockwise).As shown in fig. 6, being fixedly connected with drive rocker 15 on the power transmission shaft 3, driving is shaken
Bar 15 is perpendicular to the power transmission shaft 3, and the upper end of drive rocker 15, which is provided with a drive block 16, looper connecting rod 5, is further fixed on two
Individual stop block 17, the drive block 16 is located between two stop blocks 17, and driving just can be driven when 3 forward or reverse of power transmission shaft
Rocking bar 15 swings, and drive rocker 15, which swings, can make drive block 16 be abutted with the stop block 17 on the left side and connect looper
Extension bar 5 is stirred to the left, or is abutted with the stop block 17 on the right and stirred looper connecting rod 5 to the right, so, looper connecting rod 5
Just can bilateral reciprocation.
In a kind of damper mechanism of sewing machine of the present invention, suture needle connecting rod 4 is connected with upper rotating shaft 1, upper rotating shaft 1
Rotate and drive suture needle connecting rod 4 to pump, as shown in figure 3, being connected with connecting lever 20, connecting lever 20 in the upper rotating shaft 1
On be hinged with axle connecting rod 18, the lower end of upper axle connecting rod 18 is hinged in the suture needle connecting rod 4, so, upper rotating shaft 1 rotate and
Connecting lever 20 is driven to rotate, connecting lever 20 rotates and drives the upper end of axle connecting rod 18 to be rotated around the axle center of upper rotating shaft 1, upper axle connecting rod 18
Lower end be hinged with suture needle connecting rod 4 and drive suture needle connecting rod 4 to move along a straight line upper and lower, back and forth.Upper rotating shaft 1 is at connecting lever 20
The inertia force born is maximum, because connecting lever 20 itself is not rotary structure, so, connecting lever 20 can be produced when rotating
Inertia force is simultaneously acted in rotating shaft 1, when sewing machine works, and connecting lever 20, upper axle connecting rod 18 and suture needle connecting rod 4 are vertically square
Velocity component to (i.e. vertical direction) is larger, so, it is perpendicular produced by connecting lever 20, upper axle connecting rod 18 and suture needle connecting rod 4
Nogata to inertia force can be acted on by connecting lever 20 in upper rotating shaft 1, in order to avoid in upper rotating shaft 1 institute it is increased on spindle balance
The inertia force formation that the inertia force that block 6 is produced is acted in upper rotating shaft 1 with connecting lever 20 causes sewing machine generation to be toppled occasionally with joint efforts
Trend, upper spindle balance block 6 should be positioned as close to connecting lever 20, as shown in figure 3, the upper spindle balance block 6 is located at connecting lever
On 20, connecting lever 20 is provided with the second jointed shaft 21, and the upper end of the upper axle connecting rod 18 is hinged on second jointed shaft 21, on
The jointed shaft 21 of spindle balance block 6 and second is located at the axle center both sides of upper rotating shaft 1 respectively, and the connecting lever 20 is provided with a secter pat 19,
The upper spindle balance block 6 is removably wrapped on the secter pat 19.Secter pat 19 itself on connecting lever 20 can be to connecting lever
20th, the inertia force produced by the part such as suture needle connecting rod 4, upper axle connecting rod 18 plays certain balanced action.
In a kind of damper mechanism of sewing machine of the present invention, the upper spindle balance block 6 can be with upper rotating shaft 1 using removable
Unload connected mode connection；It is of course also possible to which the balance of the inertia force of rotating shaft 1 is asked on just considering in sewing machine design and installation
Topic, sets into a single integrated structure when manufacturing connecting lever 20 by upper spindle balance block 6 and connecting lever 20.Certainly, lower axle balance weight 7 and lower rotary shaft
It can be connected between 2 using mode is detachably connected, lower axle balance weight 7 and lower rotary shaft 2 can also be set into a single integrated structure shape
Formula；It can be connected between additional counterweight 8 and power transmission shaft 3 using mode is detachably connected, can also be by additional counterweight 8 with passing
Moving axis 3 sets into a single integrated structure form.
In a kind of damper mechanism of sewing machine of the present invention, as shown in fig. 7, when suture needle connecting rod 4 is moved downward, under
Axle connecting rod 11 is moved downward, and the inertia force component for the vertical direction that looper connecting rod 5 is produced to left movement, suture needle connecting rod 4 is
Fz ', direction is downward；The inertia force component for the vertical direction that lower axle connecting rod 11 is produced is Fz ", and direction is downward；It is connected to rotating shaft 1
On upper spindle balance block 6 produce vertical direction inertia force component be F1z, direction is upward；It is connected to the lower axle on lower rotary shaft 2
The inertia force component for the vertical direction that balance weight 7 is produced is F2z, direction is upward；The additional counterweight 8 being connected on power transmission shaft 3 is produced
The inertia force component of raw vertical direction is F3z, direction is upward；Due to upper spindle balance block 6, lower axle balance weight 7, additional counterweight 8
The inertia force component direction of produced vertical direction is used with the vertical direction produced by suture needle connecting rod 4, lower axle connecting rod 11
Property force component it is in opposite direction, so, the inertia for the vertical direction that upper spindle balance block 6, lower axle balance weight 7, additional counterweight 8 are produced
Force component can offset suture needle connecting rod 4 and the inertia force component of the vertical direction produced by lower axle connecting rod 11.Looper connecting rod
The 5 inertia force components in left-right direction produced are Fx, and direction is to the left；And produced by additional counterweight 8 in left-right direction
Inertia force component is F3x, direction is to the right；So, the inertia force component in left-right direction produced by additional counterweight 8 can be supported
Inertia force component in left-right direction produced by the looper connecting rod 5 that disappears.In order to avoid or reduce as far as possible the increased balance weight of institute
Couple is formed between inertia force produced by the produced original part of inertia force and sewing machine and sewing machine is produced what is toppled
Trend, increased each balance weight should be positioned as close to the original part for producing larger inertia force of sewing machine, in the present invention
A kind of sewing machine damper mechanism in, the inertia force of the junction of connecting lever 20 in upper rotating shaft 1 is larger, so, upper spindle balance block 6
Connecting lever 20 is positioned as close to, upper spindle balance block 6 can be arranged on connecting lever 20；The place of lower axle connecting rod 11 on lower rotary shaft 2
The inertia force of generation is larger, so lower axle balance weight 7 should be positioned as close to lower axle connecting rod 11, it is original in order to take into account sewing machine
Structure with lower axle balance weight 7 is installed the need for, the distance between the barycenter of lower axle balance weight 7 and suture needle are lower along lower rotary shaft 2
The component of axis direction is 80 to 100 millimeters, preferably 90 millimeters；Drive rocker 15 on power transmission shaft 3 stirs looper connecting rod 5
Bilateral reciprocation, drive rocker 15 and inertia force produced by the junction of power transmission shaft 3 are larger, so should be by additional counterweight 8
Drive rocker 15 is positioned as close to, the need for taking into account sewing machine original structure and additional counterweight 8 be installed, additional equilibrium
The distance between the barycenter of block 8 and suture needle are 5 to 20 millimeters, preferably 10 millimeters in the component of the axis direction along power transmission shaft 3.
In a kind of damper mechanism of sewing machine of the present invention, as shown in figure 8, the main parameter of balance weight has balance weight
The distance between quality m (quality of balance weight can be equivalent to the particle at barycenter), barycenter and axis of rotation r, barycenter and rotation
The angle theta of line and vertical direction between the rotating shaft heart；In order that the complete machine of sewing machine reaches preferable counterbalance effect, it is necessary to right
Upper spindle balance block 6, lower axle balance weight 7, the parameter of additional counterweight 8 make certain setting and restriction.Because sewing machine is tied in itself
The limitation of structure, the quality and volume of balance weight should not be too big, and upper spindle balance block 6 is arranged on connecting lever 20, and its installing space is larger,
The relevant parameter of spindle balance block 6 can be set according to actual needs；The installing space of lower axle balance weight 7 and additional counterweight 8
Compare limitation, it is preferable that the quality of the lower axle balance weight 7 is 70 to 75 grams, barycenter and the lower rotary shaft 2 of lower axle balance weight 7
The distance between axle center is 6 to 10 millimeters；The quality of the additional counterweight 8 is 160 to 200 grams, the barycenter of additional counterweight 8
It it is 15 to 20 millimeters with the distance between the axle center of lower rotary shaft 2；Should in a kind of the specific of damper mechanism of sewing machine of the present invention
In, the quality of the lower axle balance weight 7 is 72.6 grams, the distance between the barycenter of lower axle balance weight 7 and the axle center of lower rotary shaft 2
For 8.62 millimeters, the quality of the additional counterweight 8 is 185.5 grams, the barycenter of lower axle balance weight 7 and the axle center of lower rotary shaft 2 it
Between distance be 17.42 millimeters.The inertia force that is produced when in actual applications, according to original part real work of sewing machine and
Moment of inertia, is calculated by Optimum Synthesis, and considers actual installation space, calculate spindle balance block 6, lower axle balance weight 7,
Line and vertical side between the distance between quality m, barycenter and the axis of rotation of additional counterweight 8 r, barycenter and axis of rotation
To angle theta, and installation position of installation site, lower axle balance weight 7 of the upper spindle balance block 6 in upper rotating shaft 1 on lower rotary shaft 2
Put, the parameter such as installation site of the additional counterweight 8 on power transmission shaft 3, the final profile of mass body will combine the actual peace of machine
Fill space and assembly technology is determined.
In a kind of damper mechanism of sewing machine of the present invention, it is preferable that when suture needle connecting rod moves downwardly to minimum point,
The barycenter of the upper spindle balance block is higher than the axle center of upper rotating shaft, and the company between the barycenter of upper spindle balance block and the axle center of upper rotating shaft
Angle between line and vertical direction is 0-30 degree；The barycenter of the lower axle balance weight is higher than the axle center of lower rotary shaft, and lower axle is flat
The angle between line and vertical direction between the barycenter of block and the axle center of lower rotary shaft that weighs is 0-30 degree.When suture needle connecting rod 4
When moving up to peak, the barycenter of the upper spindle balance block 6 is less than the axle center of upper rotating shaft, and the barycenter of upper spindle balance block 6
The angle between line and vertical direction between the axle center of upper rotating shaft 1 is 0-30 degree；The barycenter of the lower axle balance weight 7
Less than between the line and vertical direction between the axle center of lower rotary shaft, and the barycenter of lower axle balance weight 7 and the axle center of lower rotary shaft 2
Angle is 0-30 degree.In above-mentioned angular range, the inertia force produced by upper spindle balance block 6 and lower axle balance weight 7 can be with seam
The direction of inertia force produced by the original part of machine of threading keeps substantially opposite state, can preferably balance sewing machine original zero
Inertia force produced by part.
In a kind of damper mechanism of sewing machine of the present invention, it is preferable that the barycenter of the additional counterweight is located at transmission
On the right side of the axle center of axle, and the barycenter of additional counterweight is located at the left side of suture needle connecting rod；So, under the side of additional counterweight is
Axle connecting rod and driven rocking bar, opposite side are suture needle connecting rod, and the vertical direction component for the inertia force that additional counterweight is produced can
Offset the vertical component for the inertia force that lower axle connecting rod, driven rocking bar and suture needle connecting rod are produced, and will not be with lower axle connecting rod, driven
The inertia force one that rocking bar and suture needle connecting rod the are produced opposite joint that works is threaded machine formation upset couple.When suture needle connecting rod 4 is to moving down
When moving to minimum point, the folder between line and vertical direction between the barycenter of the additional counterweight 8 and the axle center of power transmission shaft 3
Angle is 35-75 degree, and preferably 55.8 degree, during suture needle 4 bottom-up motion of connecting rod, looper connecting rod is moved from left to right, attached
Plus the line and the angle of vertical direction between the barycenter of balance weight 8 and the axle center of power transmission shaft are gradually reduced；When suture needle connecting rod 4
When being moved upward to peak, line between the barycenter of the additional counterweight 8 and the axle center of power transmission shaft 3 and vertical direction it
Between angle be 0-40 degree, preferably 22 degree, when suture needle connecting rod is moved from up to down, looper connecting rod right-to-left move,
The angle of line and vertical direction between the barycenter of additional counterweight 8 and the axle center of power transmission shaft gradually increases.In above-mentioned angle
In the range of, the inertia force produced by additional counterweight 8 can be kept with the direction of the inertia force produced by the original part of sewing machine
Substantially opposite state, can preferably balance the inertia force produced by the original part of sewing machine.
In a kind of damper mechanism of sewing machine of the present invention, Fig. 8 refer to, it is preferable that when suture needle connecting rod 4 is to moving down
When moving to minimum point, the barycenter of the upper spindle balance block 6 is in the state upward deflected, and then, suture needle connecting rod 4 starts upwards
Move, and the angle between the line and vertical direction between the barycenter of upper spindle balance block 6 and the axle center of upper rotating shaft 1 gradually subtracts
It is small；When suture needle connecting rod 4 is moved upward to peak, the barycenter of the upper spindle balance block 6 is in the state deflected down, with
Afterwards, suture needle connecting rod 4 starts to move downward, and the line between the barycenter of upper spindle balance block 6 and the axle center of upper rotating shaft 1 with it is vertical
Angle between direction is gradually reduced.When lower axle connecting rod 11 moves downwardly to minimum point, suture needle connecting rod 4 is moved downwardly to most
Low spot, now, the barycenter of the lower axle balance weight 7 are in the state upward deflected, then, and lower axle connecting rod 11 starts upward fortune
Dynamic, the angle between line and vertical direction between the barycenter of lower axle balance weight 7 and the axle center of lower rotary shaft 2 is gradually reduced；When
When lower axle connecting rod 11 moves up to peak, suture needle connecting rod 4 moves up to peak, now, the lower axle balance weight 7
Barycenter be in the state that deflects down, then, lower axle connecting rod 11 starts to move downward, the barycenter of lower axle balance weight 7 with lower turn
The angle between line and vertical direction between the axle center of axle 2 is gradually reduced.When suture needle connecting rod 4 is moved downward to lowest order
When putting, the barycenter of additional counterweight 8 deflects to extreme higher position；Then, suture needle connecting rod 4 starts upward motion, additional counterweight 8
Barycenter start to deflect down；When suture needle connecting rod 4 is moved upward to extreme higher position, the barycenter of additional counterweight 8 is located at most
Lower position.When looper connecting rod 5 is to left movement, the barycenter of additional counterweight 8 deflect to the right and the barycenter of additional counterweight 8 with
The angle between line and vertical direction between the axle center of lower rotary shaft 2 gradually increases；When looper connecting rod 5 is moved right,
The barycenter of additional counterweight 8 is deflected and the line between the barycenter of additional counterweight 8 and the axle center of lower rotary shaft 2 and vertical side to the left
Angle between is gradually reduced.
Calculated by the inertia force produced by the correlated parts in a kind of damper mechanism of sewing machine to the present invention
Analysis, as shown in figure 9, complete machine (not installing spindle balance block 6, lower axle balance weight 7, the sewing machine of additional counterweight 8) is produced
Raw inertia force is in mechanical periodicity with the main axis of sewing machine, and its crest value and valley value are respectively 1000N and -600N, whole
Bulk wave moves larger.As shown in Figure 10 to Figure 12, the vertical direction that upper spindle balance block 6, lower axle balance weight 7, additional counterweight 8 are produced
Inertia force phase it is essentially identical and in opposite direction, as shown in figure 13, additional counterweight 8 produce inertia in left-right direction
The phase of force component and the phase of the inertia force component in left-right direction of complete machine are essentially identical and in opposite direction；Thus offset
The inertia force of the vertical direction of the part of complete machine, plays a part of reducing complete machine oscillation.A kind of sewing machine of the present invention subtracts
Any one in upper spindle balance block 6, lower axle balance weight 7, additional counterweight 8 in mechanism of shaking can play shaking for reduction complete machine
Dynamic effect, and do not conflict mutually, single or multiple be combined can be selected to use according to actual needs, upper spindle balance block 6, lower axle
Balance weight 7, additional counterweight 8 are applied in combination simultaneously can reach optimum state.
With the damper mechanism of sewing machine of the invention described above a kind of correspondingly, the present invention also provides a kind of sewing machine, uses
A kind of damper mechanism of sewing machine of above-mentioned technical proposal or its any preferred technical scheme.
Technical scheme based on above-described embodiment, a kind of sewing machine of the invention and its damper mechanism, with following beneficial
Effect：
1st, in specific rotating shaft add balance weight by way of offset or the existing sewing machine of partial offset in moving component
Produced inertia force and moment of inertia, so as to reduce vibration and the noise of sewing machine, reduce the machine of the motion vice division chief of sewing machine
Tool weares and teares, and improves the operating environment of operating personnel；
2nd, three balance weights, which are used singly or in combination, can reduce the vibration of complete machine, and not conflict mutually, can be according to reality
Border needs selection to be used singly or in combination；
3rd, it is workable, it is not required to change existing motion, balance block structure is simple, cost is low.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. a kind of damper mechanism of sewing machine, it is characterized in that：Including power transmission shaft (3), looper connecting rod (5) and suture needle connecting rod
(4), the power transmission shaft (3) is socketed with drive rocker (15) on looper connecting rod (5), power transmission shaft (3)；Sewing machine works
When, power transmission shaft (3) forward or reverse so as to drive the end of drive rocker (15) to swing, and then drives looper to connect
Extension bar (5) bilateral reciprocation；The suture needle connecting rod (4) pumps；
Additional counterweight (8) is connected with the power transmission shaft (3), when suture needle connecting rod (4) is moved downward, the additional equilibrium
The barycenter of block (8) is upward deflected；When suture needle connecting rod (4) is moved upwards, the barycenter downward bias of the additional counterweight (8)
Turn.
2. the damper mechanism of sewing machine as claimed in claim 1, it is characterized in that：It is attached when looper connecting rod (5) is to left movement
Plus the barycenter of balance weight (8) is deflected to the right；When looper connecting rod (5) is moved right, the barycenter of additional counterweight (8) is to left avertence
Turn.
3. the damper mechanism of sewing machine as claimed in claim 1, it is characterized in that：The barycenter of the additional counterweight (8) is located at
On the right side of the axle center of power transmission shaft (3), and the barycenter of additional counterweight (8) is located at the left side of suture needle connecting rod (4).
4. the damper mechanism of sewing machine as claimed in claim 1, it is characterized in that：
When suture needle connecting rod (4) is moved downward to minimum point, the barycenter of the additional counterweight (8) and the axle of power transmission shaft (3)
The angle between line and vertical direction between the heart is 35-75 degree；
When suture needle connecting rod (4) is moved upward to peak, the barycenter of the additional counterweight (8) and the axle of power transmission shaft (3)
The angle between line and vertical direction between the heart is 0-40 degree.
5. the damper mechanism of sewing machine as claimed in claim 1, it is characterized in that：The power transmission shaft (3) passes with a lower rotary shaft (2)
Dynamic connection, lower rotary shaft (2) is provided with a crank portion, and crank portion is provided with one section of first jointed shaft (10) parallel to lower rotary shaft (2)；
Lower axle connecting rod (11) is hinged with first jointed shaft (10), the lower end of lower axle connecting rod (11) is provided with a sphere hinge hole (12)；Institute
State and driven rocking bar (13) is socketed with power transmission shaft (3), driven rocking bar (13) is perpendicular to the power transmission shaft (3), driven rocking bar (13)
End be provided with the sphere articulated joint (14) of cooperation be hinged with the sphere hinge hole (12).
6. the damper mechanism of sewing machine as claimed in claim 1, it is characterized in that：The drive rocker (15) passes perpendicular to described
Moving axis (3), the upper end of drive rocker (15), which is provided with a drive block (16), looper connecting rod (5), is further fixed on two stop blocks
(17), the drive block (16) is located between two stop blocks (17).
7. a kind of sewing machine, it is characterized in that：Include the damper mechanism of the sewing machine described in any one of the claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236783.9A CN107059270B (en) | 2016-12-28 | 2016-12-28 | Sewing machine and vibration reduction mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236783.9A CN107059270B (en) | 2016-12-28 | 2016-12-28 | Sewing machine and vibration reduction mechanism thereof |
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| CN107059270A true CN107059270A (en) | 2017-08-18 |
| CN107059270B CN107059270B (en) | 2020-02-14 |
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| CN201611236783.9A Active CN107059270B (en) | 2016-12-28 | 2016-12-28 | Sewing machine and vibration reduction mechanism thereof |
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| CN108221201A (en) * | 2018-01-03 | 2018-06-29 | 杰克缝纫机股份有限公司 | A kind of looper axial direction driving structure |
| CN108411507A (en) * | 2018-02-08 | 2018-08-17 | 佛山市华连达机械有限公司 | A kind of full-automatic sewing machine |
| CN116770516A (en) * | 2023-08-14 | 2023-09-19 | 泰州市正安玻璃纤维有限公司 | Integrated semi-automatic industrial sewing device |
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| CN108221201A (en) * | 2018-01-03 | 2018-06-29 | 杰克缝纫机股份有限公司 | A kind of looper axial direction driving structure |
| CN108411507A (en) * | 2018-02-08 | 2018-08-17 | 佛山市华连达机械有限公司 | A kind of full-automatic sewing machine |
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| Publication number | Publication date |
|---|---|
| CN107059270B (en) | 2020-02-14 |
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Address after: 318010 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. |