CN105133216A - Thread trimming drive mechanism for sewing machines - Google Patents
Thread trimming drive mechanism for sewing machines Download PDFInfo
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- CN105133216A CN105133216A CN201510508528.4A CN201510508528A CN105133216A CN 105133216 A CN105133216 A CN 105133216A CN 201510508528 A CN201510508528 A CN 201510508528A CN 105133216 A CN105133216 A CN 105133216A
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Abstract
The invention provides a thread trimming drive mechanism for sewing machines, and belongs to the technical field of machinery. The problem that the existing sewing machine is complex in structure as the lower thread trimming mechanism and the upper thread trimming mechanism are driven separately is solved. The thread trimming drive mechanism comprises an upper thread trimming mechanism and a lower thread trimming mechanism, both of which are arranged inside a sewing machine table. The lower thread trimming mechanism comprises a base fixed inside the sewing machine table. A pair of lower thread scissors is vertically arranged on the base. The upper thread trimming mechanism comprises a positioning seat fixed inside the sewing machine table. A pair of upper thread scissors is horizontally arranged on the positioning seat. The thread trimming drive mechanism further comprises a drive cylinder arranged inside the sewing machine table. Under the drive of the drive cylinder, the lower thread scissors can trim off a lower thread upward and the upper thread scissors can swing transversely to trim off an upper thread at the same time. The thread trimming drive mechanism is advantageous in that the lower thread trimming mechanism and the upper thread trimming mechanism can be driven by the same cylinder to work simultaneously, the installation space is saved, the internal structure is simplified, and the like.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of Sewing machines, particularly relate to a kind of trimming driving mechanism of Sewing machines.
Background technology
Along with the development of scientific and technological level, the automaticity of Sewing machines is more and more higher, existing Sewing machines is generally all provided with automatic shearing mechanism, putting into Sewing machines at cloth starts after sewing puts in place, automatic shearing mechanism can be utilized to be cut off by suture makes suture and cloth be separated, can the time of making be saved like this, reduce the labour intensity making workman.Existing automatic shearing mechanism generally comprises cuts upper thread mechanism and cut bottom line mechanism, cuts upper thread mechanism and is specifically designed to and is cut by upper thread, cuts bottom line mechanism and is specifically designed to and is cut by bottom line (and heart yearn).In existing Sewing machines to cut bottom line mechanism substantially the same with the structure of cutting upper thread mechanism, generally be made up of a dead knife and a movable blade, movable blade and an actuator are connected, under the effect of this actuator, movable blade can be moved to close or away from dead knife direction, bottom line or upper thread can be caught in the process that movable blade is close, then by movable blade and dead knife is interlaced and collaborative is cut off by line.
But, existing cut bottom line mechanism and cut upper thread mechanism driven separately by special corresponding actuator, be cut bottom line mechanism and cut upper thread mechanism respectively a corresponding configuration actuator to carry out driving work, separate both during trimming, each self-driven, cause overall trimming efficiency lower, not synchronously, easily extend the trimming time.In addition, be arranged in the platen of Sewing machines owing to cutting bottom line mechanism and cutting upper thread mechanism, the inside installing space of sewing machine table is inherently narrower and small, two actuators are adopted to drive also can increase production cost to cutting bottom line mechanism and cutting upper thread mechanism respectively, take the inside installing space of sewing machine table, but also the structure in sewing machine table can be caused to become more complicated, the maintenance of Shi Ge mechanism becomes more difficult.
Summary of the invention
The object of the invention is the problems referred to above existed for prior art, propose a kind of utilize one to drive cylinder to drive simultaneously and cut upper thread mechanism and cut bottom line mechanism carry out trimming simultaneously, improve the trimming driving mechanism of the Sewing machines of trimming efficiency.
Object of the present invention realizes by following technical proposal:
A kind of trimming driving mechanism of Sewing machines, comprise and be arranged at cutting upper thread mechanism and cutting bottom line mechanism in sewing machine table, it is characterized in that, described bottom line mechanism of cutting comprises the pedestal be fixed in sewing machine table, described pedestal is vertically provided with the bottom line scissors that can move up and down, described upper thread mechanism of cutting comprises the positioning seat be fixed in sewing machine table, described positioning seat is horizontally disposed with can the upper thread scissors of teeter, this trimming driving mechanism also comprises the driving cylinder be arranged in sewing machine table, described bottom line scissors can be made under the drive driving cylinder upwards to cut bottom line and described upper thread scissors teeter can be made to cut upper thread simultaneously.
The trimming driving mechanism of this Sewing machines is after fabric is made, and main utilization is cut the in-house bottom line scissors of bottom line and moved upward and to be cut off by bottom line (and heart yearn), cuts upper thread in-house upper thread scissors teeter and is cut off by upper thread.
In the trimming driving mechanism of this Sewing machines, drive cylinder to drive to cut upper thread mechanism and cut bottom line mechanism and work simultaneously owing to only make use of one simultaneously, substantially increase trimming efficiency, shorten the trimming time, drive cylinder to drive owing to only make use of one simultaneously, therefore, it is possible to reduce production cost well, save the installing space in sewing machine table, the maintenance between Shi Ge mechanism is simpler simultaneously.
In the trimming driving mechanism of above-mentioned Sewing machines, drive link is provided with below described bottom line scissors, middle part and the pedestal of described drive link are hinged, the inner of described drive link is resisted against the bottom of bottom line scissors, described positioning seat has been horizontally disposed with locating shaft, described locating shaft is arranged with moving block, described upper thread scissors is positioned at the upper end of moving block, described moving block sidepiece has the connecting rod protruded from outside locating shaft, the end horizontal of the piston rod of described driving cylinder is connected with pressing plate, on the outer end that described pressing plate is resisted against drive link simultaneously and connecting rod.
The end of the piston rod of cylinder is driven to be connected with pressing plate, when driving, the piston rod of cylinder retraction band dynamic pressure plate is driven to press down, because pressing plate is resisted against on drive link and connecting rod simultaneously, to be articulated with in the middle part of drive link on pedestal and to be positioned at the below of bottom line scissors, therefore drive link rotates around pin joint and the inner is upturned under the effect of pressing plate, bottom line scissors is pushed upwardly and is cut by bottom line (and heart yearn), simultaneously because connecting rod is fixed on moving block sidepiece, moving block is set in and is positioned on the locating shaft of positioning seat, therefore connecting rod can make moving block produce to the side oscillation near upper thread under the effect of pressing plate, upper thread can be cut off in swing process by the upper thread scissors be arranged on moving block.
In the trimming driving mechanism of above-mentioned Sewing machines, described pressing plate is fixed with L-shaped briquetting, the outer end of described pressing plate is connected with driving the piston rod of cylinder, the inner of described pressing plate is resisted against on the outer end of drive link, the outer end of described connecting rod is higher than the outer end of drive link, and described briquetting upper end protrudes from the side of pressing plate and is resisted against on connecting rod.
Because the outer end of connecting rod is higher than the outer end of drive link, therefore be connected L-shaped briquetting on pressing plate, the outer end of pressing plate is connected with driving the piston rod of cylinder, the inner of pressing plate is resisted against on the outer end of drive link, briquetting upper end is resisted against on connecting rod, like this, when driving the piston rod retraction of cylinder, piston rod band dynamic pressure plate moves down, pressing plate the inner presses down the outer end of drive link and makes the inner of drive link be upturned and upwardly carry out bottom line scissors to cut bottom line (and heart yearn), briquetting upper end simultaneously on pressing plate contacts with connecting rod and is pressed down by connecting rod, connecting rod presses down and makes moving block to the side oscillation near upper thread, upper thread is cut off in swing process by the upper thread scissors be arranged on moving block.
In the trimming driving mechanism of above-mentioned Sewing machines, all have projection on the upside of the two ends of described drive link, the projection of described drive link the inner is resisted against the bottom of bottom line scissors, and the inner of described pressing plate is resisted against in the projection of drive link outer end.
Being moved downward by piston rod band dynamic pressure plate when cutting upper thread mechanism owing to driving cylinder to drive at the same time and cut bottom line mechanism forces drive link promotion bottom line scissors of tilting upward to move up and carry out cutting bottom line (and heart yearn), so on the upside of the two ends of drive link, all projection is set, drive link and bottom line scissors can be made like this and all formed between drive link and pressing plate a little with the way of contact of line, the pressure making drive link can accept pressing plate better drives bottom line scissors.
In the trimming driving mechanism of above-mentioned Sewing machines, described connecting rod is L-shaped, and described briquetting upper end is resisted against on the outer end of connecting rod.
Connecting rod is arranged L-shaped, briquetting upper end is resisted against on the outer end of connecting rod, the connection area between connecting rod and briquetting can be increased like this, make to drive cylinder can cross while utilizing pressing plate driving to cut bottom line institution staff and driven cutting upper thread mechanism better with coordinating of connecting rod by the briquetting on pressing plate.
In the trimming driving mechanism of above-mentioned Sewing machines, this trimming driving mechanism also comprises the guide holder be fixed in sewing machine table, described guide holder is provided with guide post, described guide post be arranged in parallel with driving the piston rod of cylinder, and the upper end of described guide post is through penetrating in briquetting in the middle part of pressing plate.
Because driving cylinder is to cutting bottom line mechanism and carrying out indirectly driving to cutting upper thread mechanism by the briquetting on pressing plate by pressing plate, therefore the opplied moment of the piston rod driving cylinder is increased, simultaneously because briquetting is positioned at the top of pressing plate, drive at the same time when cutting bottom line mechanism and cut upper thread institution staff and can form moment eccentric up and down on pressing plate, so to be upward through in the middle part of pressing plate by guide post and to penetrate in briquetting, the moment eccentric up and down produced can be decomposed, thus extend the service life driving cylinder, ensure that a driving cylinder drives the stability of trimming while of cutting bottom line mechanism and cut upper thread mechanism simultaneously.
In the trimming driving mechanism of above-mentioned Sewing machines, described bottom line scissors offers bar hole vertically, described bottom line scissors passes through through bar hole and penetrates the dog screw of pedestal and be connected on pedestal.
Bottom line scissors is by through bar hole and the dog screw penetrated in pedestal and be connected on pedestal, simultaneously, because bar hole is bar shaped, mean that bottom line scissors can just can be moved upward relative to pedestal by coordinating of bar hole and dog screw and cut by bottom line driving the drive of cylinder.
In the trimming driving mechanism of above-mentioned Sewing machines, described bottom line scissors side has reseting groove, described pedestal is transversely provided with location straight trough, the Flexible Reset sheet of strip is provided with in described location straight trough, described Flexible Reset bending tablet is V-shaped, one end of described Flexible Reset sheet leans on the upper side wall of location straight trough, and the other end of described Flexible Reset sheet is positioned at reseting groove and is pressed in the lower wall of reseting groove.
When driving cylinder does not drive and cuts bottom line mechanism and cut upper thread institution staff, cut the in-house bottom line scissors of bottom line and there is the trend moved down under the effect of Flexible Reset sheet.When needs trimming, drive cylinder when bottom line mechanism is cut in driving, bottom line scissors can overcome the elastic force effect of Flexible Reset sheet and moves down and cut off by bottom line (and heart yearn) under the effect driving cylinder, and upper thread can be cut off by upper thread scissors under the drive driving cylinder in teeter simultaneously.After line has been cut, drive the piston rod of cylinder to reset, lose the effect driving cylinder, bottom line scissors can reset downwards under the elastic force effect of Flexible Reset sheet.
In the trimming driving mechanism of above-mentioned Sewing machines, described moving block sidepiece also has the location division in tabular, described location division and connecting rod are positioned at the both sides of moving block, and described location division protrudes from outside locating shaft, are connected with back-moving spring between the location division of described moving block and positioning seat.
When driving cylinder not drive to cut bottom line mechanism and cut upper thread institution staff, cut that the in-house moving block of upper thread is subject to the elastic force effect of back-moving spring and to the side oscillation away from upper thread, upper thread scissors is along with moving block is away from upper thread.When needs trimming, drive cylinder when upper thread mechanism is cut in driving, moving block can overcome back-moving spring elastic force effect and near a side oscillation of upper thread, upper thread scissors on moving block is near upper thread and cut off, and bottom line scissors upwards cuts off bottom line (and heart yearn) under the drive driving cylinder simultaneously.After line has been cut, drive the piston rod of cylinder to reset, lose the effect driving cylinder, moving block can reset under the elastic force effect of back-moving spring, even if upper thread scissors resets.
Compared with prior art, the trimming driving mechanism of this Sewing machines utilizes one to drive cylinder to drive simultaneously and cut upper thread mechanism and cut bottom line mechanism to carry out trimming simultaneously, trimming efficiency can be improved widely, save the trimming time, simultaneously owing to only adopting one to drive cylinder, therefore can reduce production cost well again, save the inner space of sewing machine table, so also facilitate the maintenance of each mechanism; In addition, guide post is utilized to pass the middle part of pressing plate and penetrate in briquetting, one can lead to pressing plate, it is made to deflect, the bias that piston rod produces utilization can be decomposed by guide post by two, the service life driving cylinder can be extended like this, ensure that a driving cylinder drives the stability of trimming while of cutting bottom line mechanism and cut upper thread mechanism simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the trimming driving mechanism of this Sewing machines is arranged in sewing machine table.
Fig. 2 is the schematic diagram of the trimming driving mechanism of this Sewing machines.
Fig. 3 is the exploded view of the trimming driving mechanism Zhong Jian bottom line mechanism of this Sewing machines.
Fig. 4 is the state diagram of trimming driving mechanism Zhong Jian upper thread mechanism when cutting upper thread of this Sewing machines.
Fig. 5 is the schematic diagram of trimming driving mechanism Zhong Jian upper thread mechanism when cutting upper thread of this Sewing machines.
Fig. 6 is trimming and thread clamping mechanism another angle schematic diagram when cutting upper thread of this Sewing machines.
Fig. 7 is trimming and the state diagram of thread clamping mechanism when under arm seam of this Sewing machines.
Fig. 8 is trimming and the schematic diagram of thread clamping mechanism when under arm seam of this Sewing machines.
Fig. 9 is trimming and thread clamping mechanism another angle schematic diagram when under arm seam of this Sewing machines.
In figure, 1, platen; 2, bottom line mechanism is cut; 2a, pedestal; 2a1, location straight trough; 2b, bottom line scissors; 2b1, straight knife; 2b11, bar hole; 2b12, reseting groove; 2b13, link slot; 2b2, revolve cutter; 2c, drive link; 2c1, projection; 2d, dog screw; 2e, Flexible Reset sheet; 2f, pin; 3, upper thread mechanism is cut; 3a, positioning seat; 3b, upper thread scissors; 3b1, cutting knife one; 3b11, crimping; 3b2, cutting knife two; 3c, locating shaft; 3d, moving block; 3d1, connecting rod; 3d2, location division; 3e, back-moving spring; 3f, clamp; 3f1, clamp hole; 4, cylinder is driven; 5, pressing plate; 6, briquetting; 7, guide holder; 8, guide post.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, a kind of trimming driving mechanism of Sewing machines, comprise be arranged in sewing machine table 1 cut upper thread mechanism 3, cut bottom line mechanism 2 and drive cylinder 4.Cut bottom line mechanism 2 and comprise the pedestal 2a be fixed in sewing machine table 1, pedestal 2a is vertically provided with bottom line scissors 2b, be provided with drive link 2c below bottom line scissors 2b, the middle part of drive link 2c is hinged on pedestal 2a, and the inner of drive link 2c is resisted against the bottom of bottom line scissors 2b.Drive the end horizontal of cylinder 4 to be connected with pressing plate 5, the outer end of pressing plate 5 is connected with driving the piston rod of cylinder 4, and the inner of pressing plate 5 is resisted against on the outer end of drive link 2c.In the present embodiment, all have protruding 2c1 on the upside of the two ends of drive link 2c, the protruding 2c1 of drive link 2c the inner is resisted against the bottom of bottom line scissors 2b, and the protruding 2c1 of drive link 2c outer end is resisted against the below of pressing plate 5 the inner.
As shown in Figures 2 and 3, bottom line scissors 2b comprises the straight knife 2b1 that vertically arranges and is positioned at and revolves cutter 2b2 outside straight knife 2b1, drive link 2c is positioned at the below of straight knife 2b1, revolve cutter 2b2 V-shaped, straight knife 2b1 upper end is formed with cutting edge, revolves side, cutter 2b2 upper end and has cutting edge and the cutting edge revolving cutter 2b2 is positioned at the top of straight knife 2b1 cutting edge.Straight knife 2b1 is axially arranged with bar hole 2b11 along it, revolve the bar hole 2b11 place being positioned at straight knife 2b1 in the middle part of cutter 2b2, dog screw 2d penetrates in pedestal 2a through the bar hole 2b11 revolved in the middle part of cutter 2b2, straight knife 2b1 successively from outside, revolves cutter 2b2 and is formed hinged by dog screw 2d and pedestal 2a.Straight knife 2b1's while have the projection protruding from pedestal 2a side, forms a link slot 2b13 between two projections, revolve cutter 2b2 lower end and be connected with pin 2f and this pin 2f is inserted in link slot 2b13.
As shown in Figure 3, pedestal 2a is transversely provided with location straight trough 2a1, the Flexible Reset sheet 2e of strip is provided with in the straight trough 2a1 of location, Flexible Reset sheet 2e bends V-shaped, straight knife 2b1 has reseting groove 2b12, one end of Flexible Reset sheet 2e leans on the upper side wall of location straight trough 2a1, and the other end of Flexible Reset sheet 2e is positioned at reseting groove 2b12 and is pressed on the downside cell wall of reseting groove 2b12.
As shown in Figure 2, cut upper thread mechanism 3 and comprise the positioning seat 3a be fixed in sewing machine table 1, positioning seat 3a is horizontally disposed with locating shaft 3c, locating shaft 3c is arranged with moving block 3d, moving block 3d sidepiece has the connecting rod 3d1 protruded from outside locating shaft 3c, the upper end of moving block 3d has been horizontally disposed with upper thread scissors 3b, and the outer end of connecting rod 3d1 is higher than the outer end of drive link 2c.Pressing plate 5 is fixed with L-shaped briquetting 6, connecting rod 3d1 is also L-shaped, and briquetting 6 upper end to protrude from outside pressing plate 5 side and is resisted against on the outer end of connecting rod 3d1.
As shown in Fig. 4-Fig. 9, positioning seat 3a is also fixed with clamp 3f, the end of clamp 3f is provided with clamp hole 3f1, and bottom line to be introduced in clamp 3f and to draw from the clamp hole 3f1 clamp 3f.Face scissors comprises and be arrangeding in parallel and cutting knife one 3b1 all in the form of sheets and cutting knife two 3b2, the outer end of cutting knife two 3b2 is positioned at the below of clamp 3f and the outer end of cutting knife two 3b2 protrudes from outside the outer end of cutting knife one 3b1, cutting knife two 3b2 has cutting edge near the side of cutting knife one 3b1, the outer end of cutting knife one 3b1 upwards bends up and forms crimping 3b11, and crimping 3b11 and clamp 3f end recline and the clamp hole 3f1 of the sidepiece of crimping 3b11 on clamp 3f mutually.
Moving block 3d sidepiece has the location division 3d2 in tabular, location division 3d2 protrudes from outside locating shaft 3c, location division 3d2 and connecting rod 3d1 is positioned at the both sides of moving block 3d, be connected with back-moving spring 3e between the location division 3d2 of moving block 3d and positioning seat 3a, under the elastic force effect of back-moving spring 3e, moving block 3d is to the also close clamp 3f of the side oscillation away from upper thread.
The trimming driving mechanism of this Sewing machines also comprises the guide holder 7 be fixed in sewing machine table 1, guide holder 7 is provided with and the guide post 8 driving the piston rod of cylinder 4 to parallel, and the upper end of guide post 8 is through penetrating in briquetting 6 in the middle part of pressing plate 5.
Bottom line mechanism 2 of cutting in the trimming driving mechanism of this Sewing machines is mainly used in the bottom line (and heart yearn) after being made by fabric and cuts, and cuts upper thread mechanism 3 and is mainly used in the upper thread after being made by fabric and cuts and clamped by bottom line after cutting upper thread and conveniently cut bottom line mechanism 2 and cut.
After fabric is made, need bottom line (and heart yearn) and upper thread is cut time, control to drive the piston rod work of cylinder 4.Drive the piston rod end retraction of cylinder 4, band dynamic pressure plate 5 moves downward, pressing plate 5 the inner presses down the outer end of drive link 2c, drive link 2c rotates around pin joint, the inner of drive link 2c is upturned and the straight knife 2b1 promoting bottom line scissors 2b overcomes the elastic force effect of Flexible Reset sheet 2e and moves up, because the pin 2f revolving cutter 2b2 lower end inserts in the link slot 2b13 on straight knife 2b1, therefore can drive in the process that straight knife 2b1 rises on the lower end of revolving cutter 2b2 and move, revolve cutter 2b2 like this to rotate around pin joint, bottom line (and heart yearn) bottom fabric can hook in cutting edge by the cutting edge revolving its upper end in cutter 2b2 rotation process, the cutting edge of straight knife 2b1 upper end can be constantly close to the cutting edge revolving cutter 2b2 in uphill process simultaneously, until the cutting edge of straight knife 2b1 is cut off hooking the bottom line (and heart yearn) revolved in cutter 2b2 cutting edge.
As Figure 4-Figure 6, while pressing plate 5 presses down driving bottom line scissors 2b trimming, the connecting rod 3d1 of moving block 3d sidepiece can press down by the briquetting 6 be positioned on pressing plate 5 simultaneously, and connecting rod 3d1 is depressed thus moving block 3d is rotated.Moving block 3d can overcome the elastic force effect of back-moving spring 3e and near a side oscillation of upper thread, upper thread, and to be cut off by the cutting edge of its sidepiece to meeting and brought into linear contact in the process near upper thread one side oscillation at moving block 3d by cutting knife two 3b2 of upper thread scissors 3b.So, make to drive cylinder 4 to drive simultaneously and cut upper thread mechanism 3 by the effect of pressing plate 5 and briquetting 6 and cut bottom line mechanism 2 and upper thread and bottom line (and heart yearn) are cut simultaneously.
After upper thread and bottom line (and heart yearn) are cut, the piston rod of cylinder 4 is driven upwards to reset, briquetting 6 on pressing plate 5 and pressing plate 5 is separated with drive link 2c and connecting rod 3d1 respectively, drives cylinder 4 no longer to drive cutting bottom line mechanism 2 and cutting upper thread mechanism 3.After losing the driving driving cylinder 4, cut bottom line mechanism 2 and cut upper thread mechanism 3 and reset respectively.Straight knife 2b1 in bottom line scissors 2b drives and revolves cutter 2b2 lower end and move down under the elastic force effect of Flexible Reset sheet 2e, and returns to initial position.As shown in figs. 7 to 9, moving block 3d then under the elastic force effect of back-moving spring 3e to the side oscillation away from upper thread, simultaneously in swing process, upper thread scissors 3b is close to clamp 3f away from upper thread, bottom line can be clamped in when moving to the clamp hole 3f1 of clamp 3f end in the 3f1 of clamp hole by the sidepiece of the crimping 3b11 on cutting knife one 3b1 in upper thread scissors 3b (to be clamped bottom line and can ensure to find the end of a thread exactly when next time sews, prevent off-line) after bottom line is cut.
The trimming driving mechanism of this Sewing machines only make use of one and drives cylinder 4 to drive to cut upper thread mechanism 3 simultaneously and cut bottom line mechanism 2 and carry out trimming simultaneously, greatly increase operating efficiency, and owing to only adopting one to drive cylinder 4, therefore also production cost is reduced well, saving the installing space in sewing machine table 1 simultaneously, providing conveniently for safeguarding.
In addition, trimming driving mechanism due to this Sewing machines make use of pressing plate 5 and briquetting 6 drives indirectly to cutting bottom line mechanism 2 and cutting upper thread mechanism 3, increase the opplied moment of the piston rod driving cylinder 4, simultaneously because briquetting 6 is positioned on pressing plate 5, piston rod can be formed moment eccentric up and down, utilize guide post 8 through the middle part of pressing plate 5 and penetrate in briquetting 6, one can lead to pressing plate 5, it is made to deflect, the bias that piston rod produces utilization can be decomposed by guide post 8 by two, the service life driving cylinder 4 can be extended like this, ensure that a driving cylinder 4 drives the stability of trimming while of cutting bottom line mechanism 2 and cut upper thread mechanism 3 simultaneously.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (9)
1. the trimming driving mechanism of a Sewing machines, comprise and be arranged at cutting upper thread mechanism (3) and cutting bottom line mechanism (2) in sewing machine table (1), it is characterized in that, described bottom line mechanism (2) of cutting comprises the pedestal (2a) be fixed in sewing machine table (1), described pedestal (2a) is vertically provided with the bottom line scissors (2b) that can move up and down, described upper thread mechanism (3) of cutting comprises the positioning seat (3a) be fixed in sewing machine table (1), described positioning seat (3a) is horizontally disposed with can the upper thread scissors (3b) of teeter, this trimming driving mechanism also comprises the driving cylinder (4) be arranged in sewing machine table (1), described bottom line scissors (2b) can be made under the drive driving cylinder (4) upwards to cut bottom line and described upper thread scissors (3b) teeter can be made to cut upper thread simultaneously.
2. the trimming driving mechanism of Sewing machines according to claim 1, it is characterized in that, described bottom line scissors (2b) below is provided with drive link (2c), middle part and the pedestal (2a) of described drive link (2c) are hinged, the inner of described drive link (2c) is resisted against the bottom of bottom line scissors (2b), described positioning seat (3a) has been horizontally disposed with locating shaft (3c), described locating shaft (3c) is arranged with moving block (3d), described upper thread scissors (3b) is positioned at the upper end of moving block (3d), described moving block (3d) sidepiece has and protrudes from locating shaft (3c) connecting rod outward (3d1), the end horizontal of the piston rod of described driving cylinder (4) is connected with pressing plate (5), on the outer end that described pressing plate (5) is resisted against drive link (2c) simultaneously and connecting rod (3d1).
3. the trimming driving mechanism of Sewing machines according to claim 2, it is characterized in that, described pressing plate (5) is fixed with L-shaped briquetting (6), the outer end of described pressing plate (5) is connected with driving the piston rod of cylinder (4), the inner of described pressing plate (5) is resisted against on the outer end of drive link (2c), the outer end of described connecting rod (3d1) is higher than the outer end of drive link (2c), and described briquetting (6) upper end protrudes from the side of pressing plate (5) and is resisted against on connecting rod (3d1).
4. the trimming driving mechanism of Sewing machines according to claim 3, it is characterized in that, on the upside of the two ends of described drive link (2c), all there is projection (2c1), the projection (2c1) of described drive link (2c) the inner is resisted against the bottom of bottom line scissors (2b), and the inner of described pressing plate (5) is resisted against in the projection (2c1) of drive link (2c) outer end.
5. the trimming driving mechanism of Sewing machines according to claim 2, is characterized in that, described connecting rod (3d1) is L-shaped, and described briquetting (6) upper end is resisted against on the outer end of connecting rod (3d1).
6. the trimming driving mechanism of the Sewing machines according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, this trimming driving mechanism also comprises the guide holder (7) be fixed in sewing machine table (1), described guide holder (7) is provided with guide post (8), described guide post (8) be arranged in parallel with driving the piston rod of cylinder (4), and the upper end of described guide post (8) is passed pressing plate (5) middle part and penetrates in briquetting (6).
7. the trimming driving mechanism of the Sewing machines according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described bottom line scissors (2b) offers bar hole (2b11) vertically, and described bottom line scissors (2b) passes through through bar hole (2b11) and penetrates the dog screw (2d) of pedestal (2a) and be connected on pedestal (2a).
8. the trimming driving mechanism of the Sewing machines according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described bottom line scissors (2b) side has reseting groove (2b12), described pedestal (2a) is transversely provided with location straight trough (2a1), the Flexible Reset sheet (2e) of strip is provided with in described location straight trough (2a1), described Flexible Reset sheet (2e) is bending V-shaped, one end of described Flexible Reset sheet (2e) leans on the upper side wall of location straight trough (2a1), the other end of described Flexible Reset sheet (2e) is positioned at reseting groove (2b12) and is pressed in the lower wall of reseting groove (2b12).
9. the trimming driving mechanism of Sewing machines according to claim 2, it is characterized in that, described moving block (3d) sidepiece also has the location division (3d2) in tabular, described location division (3d2) and connecting rod (3d1) are positioned at the both sides of moving block (3d), described location division (3d2) protrudes from locating shaft (3c) outward, is connected with back-moving spring (3e) between the location division (3d2) of described moving block (3d) and positioning seat (3a).
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| CN201510508528.4A CN105133216B (en) | 2015-08-18 | 2015-08-18 | A kind of trimming drive mechanism of sewing machine |
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| CN201510508528.4A CN105133216B (en) | 2015-08-18 | 2015-08-18 | A kind of trimming drive mechanism of sewing machine |
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| CN1224087A (en) * | 1998-01-15 | 1999-07-28 | 杜尔科普-阿德乐股份有限公司 | Thread cutting device for buttonhole machine |
| CN2737813Y (en) * | 2004-08-13 | 2005-11-02 | 中捷缝纫机股份有限公司 | Device for severing the thread used on button holing machine |
| CN201284404Y (en) * | 2008-09-25 | 2009-08-05 | 吴阿杞 | Two-side thread trimming shared thread trimmer |
| JP4316069B2 (en) * | 1999-09-30 | 2009-08-19 | Ｊｕｋｉ株式会社 | Perforated sewing machine |
| CN104862891A (en) * | 2015-06-17 | 2015-08-26 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of sewing machine |
| CN205046330U (en) * | 2015-08-18 | 2016-02-24 | 浙江中捷缝纫科技有限公司 | Sewing machine's trimming actuating mechanism |
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2015
- 2015-08-18 CN CN201510508528.4A patent/CN105133216B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224087A (en) * | 1998-01-15 | 1999-07-28 | 杜尔科普-阿德乐股份有限公司 | Thread cutting device for buttonhole machine |
| JP4316069B2 (en) * | 1999-09-30 | 2009-08-19 | Ｊｕｋｉ株式会社 | Perforated sewing machine |
| CN2737813Y (en) * | 2004-08-13 | 2005-11-02 | 中捷缝纫机股份有限公司 | Device for severing the thread used on button holing machine |
| CN201284404Y (en) * | 2008-09-25 | 2009-08-05 | 吴阿杞 | Two-side thread trimming shared thread trimmer |
| CN104862891A (en) * | 2015-06-17 | 2015-08-26 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of sewing machine |
| CN205046330U (en) * | 2015-08-18 | 2016-02-24 | 浙江中捷缝纫科技有限公司 | Sewing machine's trimming actuating mechanism |
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| CN105133216B (en) | 2017-08-25 |
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Effective date of registration: 20161020 Address after: 317604 Taizhou Province, Yuhuan County, Lantau Island Road, Hing Hong Kong Road, No. 198 Applicant after: Zhejiang Zoje Sewing Technology Co., Ltd. Applicant after: Zhejiang Zhongyi Sewing Machine Co Ltd Applicant after: Zhejiang Besserman sewing machine Co., Ltd. Address before: 317604 Taizhou Province, Yuhuan County, Lantau Island Road, Hing Hong Kong Road, No. 198 Applicant before: Zhejiang Zoje Sewing Technology Co., Ltd. |
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Effective date of registration: 20200924 Address after: 198 Xinggang East Road, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Patentee before: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG JOYEE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG BSM SEWING MACHINE Co.,Ltd. |
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