CN206512427U - One kind operates more stably high speed embroidery machine head - Google Patents

Abstract

More stably high speed embroidery machine head is operated the utility model discloses one kind, belong to embroidery machine accessory field, including needle bar frame, shank, presser feet and the first driver, the shank and presser feet are reciprocating relative to the needle bar frame, the shank is driven by first driver, the machine head of embroidery machine also includes positioned at the clamping block of presser feet side and the second driver for driving the clamping block to circumferentially rotate, the presser feet is provided with block, the presser feet drops to predeterminated position, second driver drives the clamping block to rotate, clamping block turns to above block to limit the presser feet rising.The utility model has the advantage of that can allow, machine head of embroidery machine work is more steady, more efficient.

Description

One kind operates more stably high speed embroidery machine head

【Technical field】

The utility model is related to a kind of running more stably high speed embroidery machine head, belongs to embroidery machine accessory field.

【Background technology】

With the development of science and technology computerized emboridering machine has become the main mechanical of embroidery industry, and in embroidery machine most It is the head section of embroidery machine for part and parcel.

Machine head of embroidery machine, substantially including needle bar frame, shank, presser feet, shank and presser feet can make longitudinal direction relative to needle bar frame Linear reciprocating motion, the whole movement travel of shank is broadly divided into first decline stage, sewing stage, complete return stage. And in traditional machine head of embroidery machine, in these stages, shank and presser feet are typically what is be synchronized with the movement, but it is actual in sewer When making, the rise of presser feet simply plays a part of unclamping cloth, its real rise amount may without reaching the rise amount of shank, This causes the rise amount of many times presser feet to be all excessive, and the rise of presser feet excessively often causes vibration to machine head of embroidery machine Excessive, bigger to shank load the problem of.

【Utility model content】

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art and to provide a kind of running more flat Steady high speed embroidery machine head, can allow machine head of embroidery machine work more steady, more efficient.

Above-mentioned technical problem is solved, the utility model is adopted the following technical scheme that：

One kind running more stably high speed embroidery machine head, including needle bar frame, shank, presser feet and the first driver, it is described Shank and presser feet are reciprocating relative to the needle bar frame, and the shank is driven by first driver, the embroidery machine Head also includes positioned at the clamping block of presser feet side and the second driver for driving the clamping block to circumferentially rotate, the pressure Pin is provided with block, and the presser feet drops to predeterminated position, and second driver drives the clamping block to rotate, and clamping block turns Move to above block to limit the presser feet rising.

Using the beneficial effects of the utility model：In the utility model, a clamping block is provided with presser feet side, and should Clamping block can be circumferentially rotated, circumference here be for the axially reciprocating of presser feet, can using clamping block With the characteristic circumferentially rotated, when clamping block is turned to above the block of presser feet, the axial lock to presser feet is realized so that presser feet It can not continue to rise, after clamping block turns an angle, after departing from from block top, spacing work just will not be realized to block With presser feet can go back up to initial position.During presser feet is limited and can not risen, the reciprocating motion of shank is not by presser feet Influence, so as to allow the movement velocity of shank to be lifted, meanwhile, after presser feet is limited, rise amount reduce so that embroider The head vibrations of flower machine are seldom, more steady during running.

And in the utility model clamping block rotation, be driven by single driving source, this type of drive It is freer in structure design, it is not only restricted to the influence of other drivers, it is possible to use the device that control circuit etc. is automatically controlled To realize that timing drives, it is possible to achieve after shank declines for the first time, clamping block is locked, when shank gos up completely, clamping block pine Open.

Preferably, the machine head of embroidery machine also includes driving box, first driver includes being located in driving box Fixing axle, fixing axle is located at the presser feet side, and the clamping block is rotatably installed in the fixing axle.Traditional machine head of embroidery machine The first interior driver has fixing axle substantially, the driving sliding block for installing driving shank, so clamping block can be by original Some fixing axles, are rotatably installed in fixing axle so that internal structure is more compact.

Preferably, second driver includes the second motor and be located between the second motor and the clamping block the One linkage.With motor as driving source, first connecting rod mechanism is as transmission, and this type of drive is relatively reliable, stability It is good.

Preferably, being convexly equipped with sliding piece on the side wall of the clamping block, the first connecting rod mechanism is connected with for dialling Move the driving lever of the sliding piece.Sliding piece is set on clamping block, sliding piece, active force of the driving lever to sliding piece are stirred with driving lever Along the tangential direction of fixing axle, so as to allow clamping block to circumferentially rotate, this type of drive is simple in construction, and driving force is more straight Connect.

Preferably, the first connecting rod mechanism includes first connecting rod, second connecting rod, third connecting rod, first connecting rod one end By second motor driving, the other end is connected with second connecting rod, and third connecting rod one end is connected with the driving lever, and third connecting rod is another One end is hinged with second connecting rod, and centre position and the driving box of third connecting rod are hinged.Driving lever is driven with the transmission of three connecting rods, It is lower in cost, while mechanically operated mode is more reliable.

Preferably, the first connecting rod and second connecting rod junction are provided with mounting hole, the mounting hole is located at the first company On bar or second connecting rod.Set after mounting hole, articulated position between first connecting rod and second connecting rod can by mounting hole come Regulation, when producing error when other parts are in assembling, can realize adjustment, it is ensured that first connecting rod mechanism can by mounting hole It is installed in driving box.

Preferably, second driver includes electromagnet and the 4th company being located between electromagnet and the clamping block Bar, fourth link is provided with the driving lever for being used for stirring the sliding piece.In this scheme, using being electromagnet as driving Source, the volume of electromagnet is relatively small, and very large area will not be taken in driving box.

Preferably, the machine head of embroidery machine is provided with the back-moving spring for being used for resetting the presser feet, when the shank declines Drive presser feet to decline, go up when presser feet gos up in the presence of the back-moving spring.It is so designed that, shank is relied on when presser feet declines Decline, go up when presser feet gos up mainly by back-moving spring, locked so that block can be locked in the rise stage, and will not Shank is produced again more compact, simple in load, structure.

Other features and advantage of the present utility model will be detailed in following embodiment, accompanying drawing exposure.

【Brief description of the drawings】

The utility model is described further below in conjunction with the accompanying drawings：

Fig. 1 is the structural representation of machine head of embroidery machine embodiment one in the utility model；

Fig. 2 is the exploded perspective view of machine head of embroidery machine embodiment one in the utility model；

Fig. 3 is the bottom views schematic diagram of the needle bar frame of machine head of embroidery machine embodiment one in the utility model；

Fig. 4 is shank, the assembling schematic diagram of presser feet in machine head of embroidery machine embodiment one in the utility model；

Fig. 5 is the schematic diagram of the center platen of machine head of embroidery machine embodiment one and pin folder in the utility model；

Fig. 6 is the structural representation inside driving box in machine head of embroidery machine embodiment one in the utility model；

Fig. 7 is the side schematic view inside driving box in machine head of embroidery machine embodiment one in the utility model；

Fig. 8 is the fundamental diagram of clamping block drive mechanism in machine head of embroidery machine embodiment one in the utility model；

Fig. 9 is the dislocation schematic diagram of the first cam and the second cam in machine head of embroidery machine embodiment one in the utility model；

Figure 10 be in the utility model in machine head of embroidery machine embodiment two at pressing plate cross section schematic diagram；

Figure 11 is the schematic diagram of the center platen of machine head of embroidery machine embodiment three and pin folder in the utility model；

Figure 12 is the schematic diagram of machine head of embroidery machine example IV center platen and pin folder in the utility model；

Figure 13 is the structural representation of the second driver in machine head of embroidery machine embodiment five in the utility model.

【Embodiment】

The technical scheme of the utility model embodiment is explained with reference to the accompanying drawing of the utility model embodiment and Illustrate, but following embodiments are only preferred embodiment of the present utility model, and it is not all.Based on the embodiment in embodiment, Those skilled in the art obtain other embodiment on the premise of creative work is not made, and belong to of the present utility model Protection domain.

In the following description, occur the indicating position such as term " interior ", " outer ", " on ", " under ", "left", "right" or Position relationship is that, based on orientation shown in the drawings or position relationship, description embodiment merely for convenience is described with simplified, and It is not instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, because This is it is not intended that to limitation of the present utility model.

Embodiment 1

As shown in Figures 1 to 4, it is machine head of embroidery machine in the present embodiment, it includes needle bar frame 1, and needle bar frame 1 is provided with shank Component, shank component includes shank 10, presser feet 2, and the bottom of shank 10 is provided with pin folder 103, and presser feet 2 includes pressing plate 20, the body of rod 21 And restorer, restorer is preferably back-moving spring 22 in the present embodiment, and pin folder 103 and pressing plate 20, can not shown in Fig. 1 to 4 Referring in Fig. 5, shank 10 and presser feet 2 can be reciprocating relative to needle bar frame, and machine head of embroidery machine also includes driving in addition Case 30 and the first driver being located in driving box 30, the first driver include the first cam 31, and the first cam 31 is in the first electricity Realize and rotate under the driving of machine, so as to drive shank 10 to make straight reciprocating motion, the first motor not shown in Fig. 1 to 3, it is necessary to Illustrate, Fig. 1 is into Fig. 3, in order to simplify expression, a shank 10 and a set of presser feet 2 are only illustrated on needle bar frame 1, it is real In the product of border, laid out in parallel has some bar shanks 10 and some set presser feets 2 on needle bar frame 1.

In traditional machine head of embroidery machine, the motion of shank 10 and presser feet 2 is all linkage, is not separated from each other, in sewing rank Section is also that shank 10 gos up to drive presser feet 2 to go up in this way, the descent tape dynamic pressure pin 2 of shank 10 declines.So, in order to reduce shank 10 load, the reciprocating motion of the linear reciprocation of shank 10 and presser feet 2 should be realized be separated from each other in theory, i.e. shank 10 The separate operation of reciprocating motion with presser feet 2 is moved back and forth, mutually non-interference, so both are in motion, suffered load Also separate, after so designing, the first driver undertakes the loads of presser feet 2 when driving shank 10 in motion without whole, So as to effectively reduce load suffered when shank 10 is moved, on the premise of same driving force, it is ensured that shank 10 Movement velocity faster, so as to make lower pin number of times of the machine head of embroidery machine within the unit interval more, substantially increases machine head of embroidery machine Operating efficiency.If but the component of shank 10 and presser feet 2 are completely independent operation, needing two sets of drive systems to drive, this Sample can make it that part increases in driving box 30, increase the volume of machine head of embroidery machine, also accordingly add the cost of machine head of embroidery machine.

, should there is also the relation of linkage and shank 10 and presser feet 2 are not completely independent in actual motion in the present embodiment Interaction relation is main, and shank 10 can drive presser feet 2 to decline during decline during the decline of shank 10, realize linkage Effect, and during rise, shank 10 is gone up by the first driver in machine head of embroidery machine, and presser feet 2 is then Gone up by the restorer in presser feet 2, so both shank 10 and presser feet 2 are independent operatings during rise.

So design, for the first driver, the first driver only needs to provide the driving force of shank 10, it is not necessary to The driving force for replying presser feet 2 is undertaken, i.e., for traditional embroidery machine, the first driver only assume responsibility for portion in the present embodiment The load divided；

For the restorer of presser feet 2, it is only necessary to the active force for being supplied to presser feet 2 to reset, without to pressure Pin 2 provides lower pressure, therefore for presser feet 2, can be realized using simpler mechanism, such as can be using the thinner bullet of line footpath Spring can just be realized.Restorer in the present embodiment is exactly the spring for using line footpath thinner, such as and optional line footpath 0.2mm~ 0.4mm spring steel, and it is traditional to ensure stronger reset force, more than line footpath 0.6mm spring steel is selected substantially.

In addition, as shown in figure 5, it is the sewing stage that embroidery machine has one section in operation, the sewing stage refers to shank 10 in quilt It is first push after, the stage before complete return, shank 10 is moved back and forth at a high speed within the stage, in the present embodiment, in seam Thread in the stage, remained that avoids a gap H between the pressing plate 20 of presser feet and the pin folder 103 of shank, avoidance gap H exists It is the lateral clearance between axial clearance or pressing plate and the pin folder between pressing plate 20 and pin folder 103 in the present embodiment, this Embodiment shows axial clearance, and the embodiment of lateral clearance for details, reference can be made to embodiment 2, and it is mesh to set and avoid gap H Be in the sewing stage, not collide or hit between pin folder 103 and pressing plate 20.And be required in traditional embroidery machine Shank drives presser feet return, therefore will generally lean on pin to press from both sides the band dynamic pressure plate 20 of 103 collision pressing plate 20 and go up, such design, pressure Plate 20 will certainly produce load to pin folder 103, produce load equivalent to shank 10, be unfavorable for the high-speed motion of shank 10.And this In embodiment, the activity always of pin folder 103 is in the top of pressing plate 20, and pin presss from both sides power of not had an effect between 103 and pressing plate 20, divided completely From the interference that will not be collided during motion etc is also pulled without other connectors, so as to reduce pressing plate to the negative of shank 10 Carry power.

Last point, traditional machine head of embroidery machine, shank 10 needs to drive presser feet 2 to go up during rise, to realize pin Bar 10 and the effect of the synchronous rise of presser feet 2, once synchronous effect is bad, shank 10 can be collided and also returned when pushing next time Presser feet 2 during rising, such reverse shock obviously exacerbates the load to shank 10, therefore right in traditional machine head of embroidery machine Restorer in presser feet 2 requires higher, if restorer needs to carry using the thicker spring of line footpath using the spring for being For larger restoring force, the Rapid reset of presser feet 2 is allowed, and in the present embodiment, because shank 10 and presser feet 2 are independent rises, pin Bar 10 need not drive presser feet 2 to go up when ging up, and both need not realize accurate synchronous rise, to the restorer of presser feet 2 It is required that it is very low, it is exactly using the thinner back-moving spring 22 of line footpath, even if shank 10 is reversely hit when pushing in the present embodiment Hit, by the reaction force also very little of restorer, excessive load will not be produced to shank 10.

Specific structure：

Needle bar frame, shank, presser feet part：Needle bar frame 1 includes overhead gage 11, lower baffle plate 12, backboard 13, and overhead gage 11 is with It is set side by side with multiple needle bar holes 14 on baffle plate 12, shank 10 is penetrated out of overhead gage 11 needle bar hole 14 and from lower baffle plate 12 Stretched out in needle bar hole 14, and can be axially movable, the bottom of shank 10, which is installed with pin folder 103, lower baffle plate 12, is provided with pressure Pin hole 15, presser feet 2 includes pressing plate 20, the body of rod 21 and back-moving spring 22, and pressing plate 20 is located at the bottom of the body of rod 21, for compressing cloth Material, pressing plate 20 shown in the present embodiment is a surface plate, naturally it is also possible to be other structures, and back-moving spring 22 is set in the body of rod On 21, the body of rod 21 is inserted into presser feet hole 15, and lower baffle plate 12 is partly stretched out below the body of rod 21, and upper part is then stretched out in lower block The top of plate 12, the top of the body of rod 21 is provided with upper limit position block 211, and after being completed, back-moving spring 22 is then limited in upper limit position block Between 211 bottom surface and the top surface of lower baffle plate 12, to prevent the body of rod 21 from departing from from lower baffle plate 12, the body of rod 21 is close to bottom position Lower limit set 212 is provided with, reference can be made to shown in Fig. 2.In the present embodiment upper limit position block 211 can be with the one of the body of rod 21 into Type or individually it is fixed on the body of rod 21.

From the point of view of only with said structure, the reciprocating motion of shank 10 and the reciprocating motion of the body of rod 21 are independent operatings, mutually not Interference, and linked to allow shank 10 to be realized when pushing with the body of rod 21, presser feet drive block, presser feet driving are provided with shank 10 Block is with the oscilaltion of shank 10, and when shank 10 declines, presser feet drive block also accordingly declines, thus with the upper limit on the body of rod 21 Block 211 offsets and pushes the upper limit position block 211 of the body of rod 21, under realizing that shank 10 drives the body of rod 21 also during decline Drop.

For presser feet drive block, there can be a numerous embodiments, simplest is direct to utilize on shank 10 intrinsic the One retainer ring 101, because traditional machine head of embroidery machine, inherently carries the first retainer ring 101, first retainer ring on shank 10 101 by the first driver for being driven, and first retainer ring 101 can follow shank 10 to move up and down, it is possible to achieve under The effect of depression bar body 21.

And the present embodiment presser feet drive block uses another preferred scheme, realized using an extra retainer ring, i.e., Second retainer ring 102, the second retainer ring 102 is located at the lower section of the first retainer ring 101, and the second retainer ring 102 uses the knot of anchor ear Structure, is fixed on by way of bolt or fastened by screw on shank 10, when needed, can be unclamped bolt or screw, be allowed Second retainer ring 102 is slided on shank 10, it is possible to achieve axial location is adjusted, and can so adjust the starting that the body of rod 21 is pushed Time, voluntarily adjusted according to different operating modes.There is provided after adjustable second retainer ring 102, it is possible to without regulation the The axial location of one retainer ring 101.

In the present embodiment, in an initial condition, it is between existing initially between the second retainer ring 102 and upper limit position block 211 Gap, the primary clearance keeps for the second retainer ring 102 to do idle stroke, and the second retainer ring 102 is slipped down to from initial position Contact in this section of stroke of upper limit position block 211, shank 10 is independent operating, not by the active force of back-moving spring 22, i.e. shank 10 Load of the shank 10 during decline can not so be reduced in this section of stroke by the load effect of presser feet 2.

In order to allow presser feet 2 in reciprocatory movement it is more stable, the upper limit position block 211 in the present embodiment is to be set in shank It is that perforation is set on upper limit position block 211 specifically on 10, the diameter of perforation and the diameter of shank 10 Match somebody with somebody, upper limit position block 211 is set on shank 10 by perforation, such body of rod 21 is in lifting, and upper end coordinates with shank 10, close Lower part coordinates with the presser feet hole 15 on lower baffle plate 12, realizes that two ends are positioned, stability is more preferable.

Because shank 10 is cylindrical, the perforation on upper limit position block 211, the presser feet hole 15 on lower baffle plate 12 are circular holes, therefore The body of rod 21 can rotate in lifting, in order to prevent upper limit position block 211 from rotating, and the present embodiment also includes being used to prevent institute State in the guide frame that upper limit position block 211 relatively rotates with the shank 10, the present embodiment and set on the backboard 13 of needle bar frame 1 There are some guide grooves 131, guide groove 131 is that traditional machine head of embroidery machine has, it acts on primarily serving and fixed to first The guide effect of ring 101, prevents it from rotating, and the first retainer ring 101 is convexly equipped with side projection 1011 in side, and side projection 1011 is being led Slided into groove 131, in the present embodiment, the guide groove 131 similarly can for being oriented to upper limit position block 211, referring to Fig. 3 and Fig. 4, the profile of upper limit position block 211 is in " convex " shape, and width small end 2111 is stretched into guide groove 131, the larger end of width 2112 are fitted on the side of backboard 13, so design, and upper limit position block 211 is only realized in guide groove 131 and slided up and down, and Rotation or double swerve can not be realized, the design of "convex" shaped can also meet not front and rear rock.Certain this area passes through this implementation The design of example is also readily apparent that the shape of upper limit position block 211 is not limited to be arranged to "convex" shaped, can also be in upper limit Chute is set on the side wall of block 211, allows guide groove 131 to be embedded in chute.

First driver portion：As mentioned above, the first driver in the present embodiment includes being located in driving box 30 Fixing axle 32, the axial direction of fixing axle 32 is parallel with the axial direction of shank 10, and driving sliding block 33 is set in fixing axle 32, The first cam 31 is rotatably connected in driving box 30, the first cam 31 drives the driving sliding block 33 by second connecting rod mechanism Pump, the side of driving sliding block 33 is convexly equipped with projection 331, convex by the side in the retainer ring 101 of projection 331 and first Block 1011 coordinates to realize that driving shank 10 moves up and down, and due to the first driver portion, is commonly used on existing machine head of embroidery machine Technical scheme, do not make excessive elaboration.

The present embodiment is additionally arranged one in driving box 30 and keeps the body of rod 21 to be in pressed status within the sewing stage Lock.The pressed status of the body of rod 21 referred herein, refers to that the body of rod 21 does not return to the state of initial position, bar after pushing When body 21 is under pressed status, back-moving spring 22 is to be in compressive state.After the lock locking body of rod 21, the body of rod 21 can be allowed In the state being pressed down, shank 10 is followed to go up, so that when allowing the shank 10 to decline next time, the second retainer ring 102 is without again It is secondary to push upper limit position block 211.After lock locks presser feet 2, the motion of shank 10 is just completely in independent operating, with presser feet 2 Be kept completely separate, either decline process, or rise process, whole process is all independent operating, thus allow shank 10 load force more It is small, shank 10 can be allowed to run more at high speed.Simultaneously as after presser feet is limited, rise amount is reduced, so that machine head of embroidery machine Vibrations are seldom, more steady during running.It should be noted that in other machine head of embroidery machine, the structure of lock can also be independent Use, such as be completely independent in presser feet, shank as a part, or the machine head of embroidery machine that presser feet and shank are interlocked completely In, lock may be used solely to lock presser feet, it is not limited to use in the present embodiment.

Lock：As shown in Figure 6 and Figure 7, clamping block 4 has been rotatablely installed in fixing axle 32, clamping block 4 can be along fixing axle 32 axis centre is circumferentially rotated, and block is set on the body of rod 21, when the body of rod 21 drops to predeterminated position, the clamping block 4 turn to block top is risen with limit stop, and after clamping block 4 turns an angle, clamping block 4 leaves above block, Just position-limiting action will not be realized to block, the body of rod 21 may return to original state position.Using the rotational characteristic of clamping block 4 come real Now to the spacing of the body of rod 21 and clearance, compact conformation, small volume nor affects on the motion of other parts.

Specifically, it is exactly the upper limit to further improve the block on the compactedness of structure, the body of rod 21 in the present embodiment Position block 211, upper limit position block 211 stretches out the part of guide groove 131, can used as block, and the side of clamping block 4 is then convex Provided with locking projections 40, locking projections 40 turn to the top of upper limit position block 211, spacing to realize.Certainly in other embodiment In, block can be the parts being individually fixed on the body of rod 21.

Lock also includes the second driver, and the second driver includes the second motor and first connecting rod mechanism, first connecting rod Mechanism connects and is laterally extended with sliding piece 44 on the clamping block 4, the side wall of clamping block 4, is being dialled when there is active force perpendicular acting When on moving plate 44, sliding piece 44 can drive the unitary rotation of clamping block 4, and the first connecting rod mechanism includes first connecting rod 51, second Connecting rod 52, third connecting rod 53, one end of first connecting rod 51 are connected with the second motor 35, the other end and second connecting rod of first connecting rod 51 52 one end is hinged, and the other end and the third connecting rod 53 of second connecting rod 52 are hinged, and the other end of third connecting rod 53 is connected with driving lever 54, driving lever 54 is the roller for being rotatably connected on the end of third connecting rod 53 in the present embodiment, and third connecting rod 53 is in two ends Meta has installed Rotational Cylindrical 531, and Rotational Cylindrical 531 is hinged with driving box 30, and Rotational Cylindrical 531 can be used as a fulcrum rotated.

When first connecting rod is realized under the driving of the second motor 35 to be rotated, second connecting rod 52 is pulled, second connecting rod 52 is in quilt During pulling, third connecting rod 53 is pulled, third connecting rod 53 when pulled, can be rotated for fulcrum with Rotational Cylindrical 531, be dialled so as to allow Bar 54 touches sliding piece 44, so as to realize that driving clamping block 4 is rotated, the second motor 35 is connected with controller, and controller can be with The motor of timing controlled second is rotated.

Because in first connecting rod mechanism, the second motor 35, third connecting rod 53 are required for being arranged on driving box 30, and position is It is fixed, and the pilot hole on driving box 30 is produced when error, or first connecting rod 51 are there may be in processing from processing The factors such as the shape that changes, many times first connecting rod mechanism be installed to the content of driving box 30 and be also easy to produce the phenomenon such as stuck, the present embodiment In be provided with mounting hole 521 in the junction with first connecting rod 51, utilize mounting hole in order to avoid this kind of situation, second connecting rod 52 521, the link position of first connecting rod 51 and second connecting rod 52 can be adjusted, even there is mismachining tolerance or rigging error, Can be made up using mounting hole 521 these error bands come influence.

When embroidery machine complete machine works, cloth is roving, only very little part embroidery machine in most cases Operationally cloth need not be moved, therefore during actual motion, when shank 10 gos up in the operating condition, the body of rod 21 preferably also will Micro rise is accordingly realized, to allow cloth to realize translation, is fluctuated to allow the body of rod 21 to be realized under pressed status, this implementation Also include being used to drive the clamping block drive mechanism that the clamping block 4 fluctuates in example, clamping block drive mechanism is in this implementation Example is also the 3rd driver, and clamping block drive mechanism can drive clamping block 4 carrying out short distance along the axial direction of fixing axle 32 From movement, the axial location of clamping block 4 is defined, that is, defines float cap position of the body of rod 21 under pressed status.

So, the operation of the body of rod 21 in the present embodiment includes several stages：

First stage：Upper limit position block 211 by the second retainer ring 102 when not hit, and the body of rod 21 is in initial position；

Second stage：Upper limit position block 211 is pressed down to behind precalculated position, and locked block 4 is locked, and the body of rod 21, which is maintained at, to be pushed State, i.e. back-moving spring 22 are to be in confined state；

Phase III：On the premise of the body of rod 21 keeps pressed status, clamping block 4 is certainly in the drive of clamping block drive mechanism Fluctuated under dynamic, clamping block 4 fluctuates, and the body of rod 21 follows clamping block 4 to fluctuate in the presence of back-moving spring 22, But initial position will not be gone back up to, the stage is the sewing stage of machine head of embroidery machine；

Fourth stage：After the sewing stage terminates, when shank 10 gos up completely, clamping block 4 loses pair after turning an angle The body of rod 21 it is spacing, the body of rod 21 returns to the initial position of first stage in the presence of back-moving spring 22.

The concrete structure of clamping block drive mechanism, i.e. the 3rd driver：Including the second cam 61, rocking bar 62, the second cam 61 rotate coaxially with the first cam 31, and rocking bar 62 includes the first rocking bar 621 and the second rocking bar 622, the first rocking bar 621 and the Two rocking bars 622 intersect V-shaped, and the first rocking bar 621 and the intersection of the first rocking bar 621 are rotatably connected on driving box 30, and first Rocking bar 621 is driven by the second cam 61, and clamping block 4 includes buoyancy body 41 and fixed body 42, and the locking projection 331 is arranged on floating On kinetoplast 41, fixed body 42 in fixing axle 32, can only be circumferentially rotated by axial limiting along fixing axle 32, and can not axially be moved It is dynamic, and buoyancy body 41 can then occur to be provided with U-shaped in axial floating, the present embodiment in the middle of buoyancy body 41 relative to fixed body 42 Groove, fixed body 42 is contained in U-lag, and short spring 43, buoyancy body are provided between the end face of fixed body 42 and the wall of U-lag Floating supports block 411 is convexly equipped with 41 side wall, during 62 Integral swinging of rocking bar, the end of the second rocking bar 622 props up floating supports block 411 so that relative to fixed body 42 relative displacement occurs for buoyancy body 41, so as to realize the axial movement of buoyancy body 41, that is, realizes Clamping block 4 referred to above fluctuates.Operation principle can be found in Fig. 8, Fig. 8 be exactly apart from L clamping block 4 floating row Journey, dotted portion be the second cam rotation certain angle after, rocking bar 62, the schematic diagram of the second cam 61.

Due to shank 10 from extreme lower position go up when, the upward active force of cloth can be applied to, preferable situation should be Shank 10 allows presser feet 2 to be still pressed on cloth in the moment of rise, and delay is gone up, when after the rise a trip of shank 10, presser feet 2 realize rise again, i.e., the initial time that described clamping block 4 floats upwards is later than the initial time that the shank 10 gos up upwards. It is to allow shank 10 in the moment of rise that the purpose so designed, which is, and presser feet 2 can allow shank 10 also in cloth state is compressed It is unlikely to cloth to take up in pull-up moment, it is linear slit can be allowed closer, while the cloth after having embroidered is also more smooth.

Delay design：As shown in Figure 9, Q1 is the driving salient point of the first cam 31 in figure, drives salient point in the present embodiment Refer to the part with respect to protrusion in all sides of cam, for realizing eccentric drive, Q2 is the driving salient point of the second cam 61, In the present embodiment, Q1 and Q2 mutual dislocations are set, and Q1 to the center of circle O line and Q2 have angle between center of circle O line Difference, when the first cam 31 and the second cam 61 are all to rotate counterclockwise, Q2 will postpone to turn to same position in Q1 all the time, this Sample can be achieved with when Q1 driving sliding block 33 begin to ramp up when, Q2 be not driven into also rocking bar 62, i.e. clamping block 4 also not on It is floating.The effect of delay is completed with the differential seat angle of two driving salient points.

In addition, the end of the second rocking bar 622 is provided with adjusting screw 63 in the present embodiment, the is adjusted by adjusting screw 63 The distance between the end of two rocking bars 622 and clamping block 4.The distance between end and clamping block 4 of rocking bar 62 are adjusted, purpose exists In the initial axial location of regulation clamping block 4, the purpose of this regulation is, the thickness of cloth has difference, regulation clamping block 4 Initial axial location, helps to adjust the compression degree of presser feet 2 and cloth.

The operation principle of whole machine head of embroidery machine is as follows：

The first step, shank 10, presser feet 2 are all in initial position；

Second step, the first electric motor starting rotates the first cam 31, shank 10 starts in the presence of the first driver, Declined for the first time, the second retainer ring 102 on shank 10 strikes the upper limit position block 211 on the body of rod 21；

3rd step, shank 10, the body of rod 21 decline together, during decline, and the second motor 35 starts, and stir 4 turns of clamping block It is dynamic, the body of rod 21 is avoided, allows presser feet 2 to be pressed onto on cloth, the first decline stage of shank 10 terminates substantially；

4th step, the second motor 35 is inverted, the return of clamping block 4, the locked body of rod 21, it is kept pressed status, is not gone up To initial position, embroidery machine enters the sewing stage；

5th step, shank 10 gos up within the sewing stage, the step in rise refer to rise under working condition, no Refer to go back up in initial position, and this section, the second motor 35 does not work to ensure that clamping block 4 is in the lock state, in this work During work, the second cam 61 also drives clamping block 4 to fluctuate simultaneously, and there is delay effect；

6th step, after the sewing stage terminates, shank 10 gos up completely, and the second motor 35 is again started up, so as to allow clamping block 4 Rotate, lost to the spacing of the body of rod 21 again, allow the body of rod 21 to be returned to original state.

Embodiment 2

As shown in Figure 10, the difference in the present embodiment with embodiment 1 is, the avoidance gap in the present embodiment is acupressure probe Lateral clearance between 20 and pin folder 103, Figure 10 is the cross sectional view at pressing plate 20, and the present embodiment center platen 20 is provided with The via 201 passed through for shank 10, the aperture of the via 201 is more than the external diameter that pin presss from both sides 103 so that pin folder 103 is in oscilaltion During will not with pressing plate 20 produce collision, so that power will not be acted to shank 10.

Embodiment 3

As shown in figure 11, the present embodiment and the difference of embodiment 1 are, the structure of the present embodiment center platen 20 area Not, the pressing plate 20 in the present embodiment includes top board 202 and lower platen 203, with connection between top board 202 and lower platen 203 Plate is connected, and top board 202, connecting plate, lower platen 203 are integrative-structures when actual production is manufactured, and can be realized with continuous bending, The pressing plate 20 of an entirety is formed, in the present embodiment, pin folder 103 is between top board 202 and lower platen 203, and is implemented Described avoidance gap H in example, also includes upper axial clearance H1 and lower axial clearance H2 in the present embodiment.Entirely sewing Stage, pin folder 103 is movable between top board 202 and lower platen 203, exists all the time between top board 202, lower platen 203 Gap, so as to ensure that pressing plate 20 is overall when ging up, will not occur load effect, this pressing plate 20 of the present embodiment with pin folder 103 Structure, bending strength is more preferable.

Embodiment 4

As shown in figure 12, the present embodiment, with embodiment 3 than relatively similar, is also the pressure using top board 202 and lower platen 203 Hardened structure, and the avoidance gap H in the present embodiment then includes lateral clearance and axial clearance, i.e., being provided with top board 202 Hole 201, the bore of the via 201 is more than the external diameter that pin presss from both sides 103, and pin folder 103 can be passed through from top board 202, while in pin Folder 103 is also provided with axial clearance H2 with lower platen 203, to ensure power of being had an effect between pin folder 103 and lower platen 203.This Sample design can allow the movement travel of pin folder 103 longer, be not limited between top board 202 and lower platen 203, extend to pin Between bridge and lower platen 203.

Embodiment 5

As shown in figure 13, the difference in the present embodiment with embodiment 1 is that lock is otherwise varied, in the present embodiment Second driver includes electromagnet 36 and the fourth link 55 being connected with electromagnet 36, the other end connection driving lever of fourth link 55 54, the centre position of fourth link 55 is hinged on driving box 30, and contraction can be produced when electromagnet 36 is powered, powered off, so as to draw Dynamic fourth link 55, fourth link 55 can stir clamping block 4 and rotate when pulled, so that the rotation of clamping block 4 is passed through into electricity Magnet 36 is driven, and energization, the power-off of electromagnet 36 are then controlled by control circuit.The volume of electromagnet is relatively small, peace Very large area will not be taken in driving box.

It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to In this, it is familiar with the those skilled in the art and should be understood that the utility model includes but is not limited to accompanying drawing and above specific embodiment party Content described in formula.Any modification without departing from function and structure principle of the present utility model is intended to be included in claims Scope in.

Claims (8)

1. one kind running more stably high speed embroidery machine head, including needle bar frame, shank, presser feet and the first driver, the pin Bar and presser feet are reciprocating relative to the needle bar frame, and the shank is driven by first driver, it is characterised in that institute Stating machine head of embroidery machine also includes positioned at the clamping block of presser feet side and the second driving for driving the clamping block to circumferentially rotate Device, the presser feet is provided with block, and the presser feet drops to predeterminated position, and second driver drives the clamping block to turn Dynamic, clamping block turns to above block to limit the presser feet rising.

2. as claimed in claim 1 operate more stably high speed embroidery machine head, it is characterised in that the machine head of embroidery machine is also Including driving box, first driver includes the fixing axle being located in driving box, and fixing axle is located at the presser feet side, described Clamping block is rotatably installed in the fixing axle.

3. as claimed in claim 2 operate more stably high speed embroidery machine head, it is characterised in that the second driver bag The first connecting rod mechanism for including the second motor and being located between the second motor and the clamping block.

4. as claimed in claim 3 operate more stably high speed embroidery machine head, it is characterised in that the side wall of the clamping block On be convexly equipped with sliding piece, the first connecting rod mechanism is connected with the driving lever for stirring the sliding piece.

5. as claimed in claim 4 operate more stably high speed embroidery machine head, it is characterised in that the first connecting rod mechanism Including first connecting rod, second connecting rod, third connecting rod, first connecting rod one end is driven by second motor, and the other end and second connects Bar is connected, and third connecting rod one end is connected with the driving lever, and the third connecting rod other end is hinged with second connecting rod, the centre of third connecting rod Position is hinged with driving box.

6. running as claimed in claim 5 more stably high speed embroidery machine head, it is characterised in that the first connecting rod and the Two connecting rod junctions are provided with mounting hole, and the mounting hole is located on first connecting rod or second connecting rod.

7. as claimed in claim 2 operate more stably high speed embroidery machine head, it is characterised in that the second driver bag The fourth link for including electromagnet and being located between electromagnet and the clamping block, fourth link, which is provided with, to be used to stir described stir The driving lever of piece.

8. as claimed in claim 1 operate more stably high speed embroidery machine head, it is characterised in that the machine head of embroidery machine is set There is the back-moving spring for resetting the presser feet, drive presser feet to decline when the shank declines, resetted when presser feet gos up described Go up in the presence of spring.