CN101191279A

CN101191279A - Bottom wire-cutting device capable of adjusting length of cut suture line

Info

Publication number: CN101191279A
Application number: CNA2006101495967A
Authority: CN
Inventors: 顾飞龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-22
Filing date: 2006-11-22
Publication date: 2008-06-04

Abstract

The invention relates to a lower thread-cutting device capable of adjusting shearing stitch length, comprising a foundation plate and a correspondingly arranged tool post, wherein, cutting blades are arranged on the front end of the tool post; a sliding seat and a hooked knife are pivotally arranged on the tool post; a turning groove and a guide groove are arranged on the sliding seat and slide by being simultaneously driven by a locating rod which is arranged on the foundation plate, a convex grain nestion which is arranged on the tool post, and a swinging arm; the sliding seat and the hooked knife can slide and hook stitches; the cutting blades are used for shearing the stitches; a holding block and a convex plate provided with an adjusting groove are extended on the side of the tool post; the holding block is contradicted by an elastic holding piece which is fixed on the foundation plate; convex grains which are fixed on a limit rod of the foundation plate are correspondingly embedded into the adjusting groove on the convex plate; simultaneously, baffle plates capable of adjusting distance are arranged on the side of the foundation plate corresponding to the convex plate of the tool post. When the swinging arm drives the sliding seat and the hooked knife to advance, the tool post coordinates with holding advancement of the elastic holding piece through the adjusting groove of the convex plate being matched with the convex grains of the limit rod, and the whole tool post is made to move forward and then the cutting blades and the hooked knife are made to be closer to the stitches, thereby the motion of shearing lines is performed, consequently no ultra-long redundant stitch tails can be generated on workpieces.

Description

Can adjust the following thread cutting device that cuts off suture length

Technical field

The relevant a kind of following thread cutting device that cuts off suture length of adjusting of the present invention, especially finger is a kind of can slide onto the cable cutter of severing thread sewing place of nearly car pin, and cut out the line cutting structure that remains on the workpiece than short line segment, it adjusts the design that groove cooperates the elasticity supporting plate by tool rest being moved the tab that advances, and reaches above-mentioned enforcement action.

Background technology

Sewing machines all has the automatic tangent function now, and general being seen cable cutter, be on this Sewing machines, to be provided with a driver, and this driver can drive the sanction line apparatus, this sanction line apparatus includes: a substrate, it is fixedly arranged on the Sewing machines, and has a sliding tray and one and the uneven connecting groove of this sliding tray direction on this substrate respectively; One cuts out line cutter group, it has a cutter spare that send that is slidedly arranged in this sliding tray, and one and this send the cutting knife spare of the overlapping setting of cutter spare, and have a front guide slot and a back guide groove on this cutting knife spare, and this back guide groove has a bend and a portion that directly leads that is communicated with this bend; One adjustment part, it is arranged in the connecting groove of this substrate, and a distal process of this adjustment part is provided with a pivot and is embedded in guide member in this back guide groove; One swing arm, it is hubbed on this substrate, one end of this swing arm and this cutting knife spare pivot knot, the other end then can be subjected to the drive of this driver, make that this swing arm is the center swing with itself and the pivoting point of substrate, drive this cutting knife spare simultaneously and move, and relative this guide member slippage with the portion that directly leads of bend of guide groove after making; One fork, it is articulated in above-mentioned sending between cutter spare and substrate, and can be driven the device interlock and produce swing, makes this fork and this send the pivoting point of cutter spare to be butted on an end of this front guide slot.

Or another existing structure arranged, shown in 10, this cable cutter 9 is sides that correspondence is assembled in car pin suture, it mainly is provided with substrate 91, corresponding group is established a tool rest 92 in substrate 91 tanks 911, has the sliding seat 93 of guide groove 931 in tool rest 92 protruding grains 921 places corresponding sheathed, and these all cuttves 94 of sliding seat 93 front end windings, before sliding seat 93 guide grooves 931, be provided with turnover groove 932 again, this turnover groove 932 is mounted on the backstay 95 of substrate 91 and is set, simultaneously sliding seat 93 is provided with a caulking groove 933 correspondences and embedded by a swing arm 96 and drive slippage, and slippage is colluded the suture of picking up the car and carried out tangent line to make sliding seat 93 interlock cutting knifes 94.

Above-mentioned existing structure all has following disappearance:

1. the cutting knife in this cable cutter (cut out into line apparatus, lower cutter device) all can't be comparatively colludes near the sewing place and gets suture and cut off action, so that the suture of institute's severing remains in the long product appearance that influences of line tail on the workpiece.

2. the cutting knife in this cable cutter (cut out into line apparatus, lower cutter device) can't adjust all that the cutting knife end relies on the thread place and thread end length that the thread of cut-out is remained on the workpiece dwindles to improve the appearance tactile impression of sewing workpiece product.

3. this cable cutter (cutting out line apparatus, lower cutter device) is when the feeding tooth (four, five teeth) of the different numbers of teeth of correspondence, in order not make cutting knife in swing one angle, in time stretch out and collude line and collide the feeding tooth, thereby the stroke distances that needs to adjust this cable cutter (cutting out line apparatus, lower cutter device) is come corresponding use, handle and adjust the technician that this cable cutter (cut out into line apparatus, lower cutter device) need have suitable technical background, and formality is numerous and diverse, so, cause the inconvenience in the use.

Summary of the invention

The purpose of this invention is to provide a kind of following thread cutting device that is convenient to operation and cuts off suture length and obtain sewing workpiece excellent appearance texture to adjust.

A kind of adjustment of the present invention cut off thread cutting device under the suture length, this time thread cutting device correspondence is assembled in the side of car pin suture, include substrate, corresponding group is established a tool rest, this tool rest front end is provided with a blade, a sliding seat and plastic cutter in addition are pivoted on tool rest, this sliding seat is provided with the protruding grain that turnover groove and guide groove are mounted on the backstay of substrate, protruding grain on the tool rest is set, and can be subjected to a swing arm driving and slippage simultaneously, its sliding seat and plastic cutter slip collude picks up the car suture and carries out tangent line with blade, wherein the side in tool rest extends one to piece, and a tool is adjusted the tab of groove, this elasticity that is set firmly substrate to piece is conflicted to the part of pulling, and correspondence is embedded a protruding grain that is fixed in the gag lever post of substrate in the adjustment groove on the tab, is provided with the catch of an Adjustable Range simultaneously in the side of the corresponding tool rest tab of substrate; Whereby, swing arm is promoted in the way of advancing that sliding seat and plastic cutter advance, this tool rest can tab be adjusted the design of the protruding grain of groove collocation gag lever post, the conflict that cooperates elasticity to support the part of pulling is advanced, and make the whole reach of tool rest make blade and plastic cutter more near thread, carry out the action of severing tangent line, so can on workpiece, not produce long unnecessary thread tail.

Description of drawings

Fig. 1 is a whole decomposing schematic representation of the present invention;

Fig. 2 is an assembling schematic diagram of the present invention;

Fig. 3 is an action schematic diagram one of the present invention;

Fig. 4 is an action schematic diagram two of the present invention;

Fig. 5 is an action schematic diagram three of the present invention;

Fig. 6 is an action schematic diagram four of the present invention;

Fig. 7 is an action schematic diagram five of the present invention;

Fig. 8 is an action schematic diagram six of the present invention;

Fig. 9 is the another embodiment of the present invention schematic diagram;

Figure 10 is the assembling schematic diagram of prior art.

The specific embodiment

For can clearer understanding technology contents of the present invention, goal of the invention and the effect that can reach thereof below will be elaborated to preferred embodiment of the present invention with reference to accompanying drawing:

At first, see also shown in Figure 1, it is the whole decomposing schematic representation that the present invention can adjust the following thread cutting device that cuts off suture length, this time thread cutting device A is the side that correspondence is assembled in car pin suture, it mainly is provided with substrate 1, corresponding group is established a tool rest 2 in substrate 1 tank 11, these tool rest 2 front ends are provided with a blade 41, has the sliding seat 3 of guide groove 31 in tool rest 2 protruding grains 21 places corresponding sheathed, and this sliding seat 3 front end windings one plastic cutter 4, this plastic cutter 4 can be protruded out by blade 41 places, in order to collude the suture of picking up the car, is provided with turnover groove 32 again before sliding seat 3 guide grooves 31, this turnover groove 32 is mounted on the protruding grain 121 of the backstay 12 of substrate 1 and is set, simultaneously sliding seat 3 is provided with a caulking groove 33 correspondences and is subjected to a swing arm 5 to embed and drive slippage, carries out tangent line to make sliding seat 3 interlock plastic cutters 4 protrude out and collude the suture of picking up the car by blade 41, wherein:

In the side of tool rest 2 extend one support piece 22, and down ora terminalis extend and have the tab 23 of adjusting groove 231, should support piece 22 counterpart substrates 1 place lock and establish an elasticity to pulling part 13, and elasticity is supported the part 13 conflict pushing tows of pulling and is supported piece 22 places in tool rest 2, continue correspondence in the adjustment groove 231 on tab 23 and be embedded a protruding grain 141 that is fixed in the gag lever post 14 of substrate 1, be provided with a catch 15 with positioning hole 151 in the side of substrate 1 corresponding tool rest 2 tabs 23 simultaneously.

See also shown in Figure 2, during assembling, be that correspondence is inserted tool rest 2 in substrate 1 tank 11, protruding grain 21 places of the 31 corresponding tool rests 2 of the guide groove on the sliding seat 3 are embedded, set the protruding grain 121 of a positioning rod 12 again in turnover groove 32 place's correspondences of sliding seat 3, and backstay 12 other ends are locked on the substrate 1, continue that corresponding embedding group one is fixedly arranged on substrate 1 in the caulking groove 33 of sliding seat 3 upper ends, and can be subjected to the swing arm 5 of drive power source, so, motive force with the swing arm 5 that driven start, allow the turnover groove 32 and the guide groove 31 of sliding seat 3, protruding grain 121 and protruding grain 21 with backstay 12 are fixed point, and sliding seat 3 is swung a micro-angle earlier in addition, straight ahead ground slippage again, continue in sliding seat 3 front ends and assemble a plastic cutter 4, establish a blade 41 in tool rest 2 front group, and make plastic cutter 4 and the blade 41 can be, and make plastic cutter 4 slippage of can advancing with sliding seat 3 pendulum angles; Then piece 22 places that support of corresponding tool rest 2 sides set firmly an elasticity to pulling part 13 on substrate 1, make elasticity support pulling part 13 1 ends to push in supporting piece 22, adjust groove 231 places lock in substrate 1 corresponding tool rest 2 tabs 23 again and establish a gag lever post 14, and place with protruding grain 141 correspondences and to adjust in the groove 231, utilize to adjust being provided with of groove 231 and make tool rest 2 slippage of can advancing, then, establish a catch 15 in substrate 1 corresponding tab 23 places lock again, positioning hole 151 on this catch 15 can make catch 15 do the position slippage, change the catch 15 corresponding distance and positions that support the tab 23 of pulling, can correspondingly adjust the advance distance { promptly in order to blade 41 front ends that cut off thread B and the distance of thread B place (feeding tooth 6) } of slippage of tool rest 2.

Please consult shown in Figure 3 again, when start, promptly driven forward by power source (not shown in the figures) and promotion sliding seat 3 by the swing arm 5 that is positioned at sliding seat 3 caulking grooves 33, protruding grain 121 by this fixed backstay 12 and gag lever post 14,141 spacing, guiding, allow sliding seat 3 rotate and swing suitable angle with the crooked conduit of turnover groove 32 leading portions and guide groove 31, promoted sliding seat 3 at that time and work as swing arm 5, its tool rest 2 sides support piece 22 and supported by elasticity to pull the conflict of part 13 and simultaneously tool rest 2 is pushed forward, so, tool rest 2 is with the also simultaneous displacement of advancing of sliding seat 3, tool rest 2 halts when being butted on the catch 15 on the substrate 1 up to tab 23 edges when tool rest 2, at this moment, the corresponding thread B of blade 41 front ends of following thread cutting device A place can be more approaching, as shown in Figure 4.Continue, when continuing to drive sliding seat 3, swing arm 5 advances, when sliding seat 3 slid into protruding grain 121 restrictions that are subjected to tool rest 2 protruding grains 21 and backstay 12, promptly plastic cutter 4 was protruded out to thread B place by interlock, colludes the suture B (as shown in Figure 5) that picks up the car with the plastic cutter 4 that makes sliding seat 3 front ends.

Please consult Fig. 6 simultaneously, 7, when swing arm 5 back drives, its plastic cutter 4 front ends have colluded thread B blade 41 correspondences of getting and being organized on back corresponding tool rest 2 front ends to cut off thread B, and after cutting off thread B, its plastic cutter 4 is replied with sliding seat 3 same continuation and is moved, when sliding seat 3 rear ends move back be butted on tool rest 2 support piece 22, the protruding

grain

121 and 21 slips of protruding grain that reach backstay 12 also are subject to when transferring groove 32 and guide groove 31 front ends, its sliding seat 3 can be together with tool rest 2 is taken back original position, at this moment, the piece 22 that supports of tool rest 2 promptly presses elasticity again and supports the part 13 of pulling, and also homing (as shown in Figure 8) of the adjustment groove 231 of tab 23.

Because thread B cuts off via the blade 41 that tool rest 2 front group are established, and tool rest 2 of the present invention is provided with protruding grain 141 adjusting levers of setting 231 with gag lever post 14, make tool rest 2 being subjected to swing arm 5 to drive sliding seat 3 in the interlock, by the setting of adjusting groove 231, make tool rest 2 slippage of can advancing, the blade 41 that is mounted on tool rest 2 front ends is advanced equally, reach make off-position can be very near thread B place, so that the line tail that remains on the workpiece after cutting off can shorten, make workpiece seem comparatively clearly attractive in appearance, and do not have too much surplus line; In addition, in substrate 1 corresponding to tool rest 2 tabs 23 places, be provided with a catch 15 with positioning hole 151, with by this adjustable catch 15, block is in the tab 23 of tool rest 2, adjust the advance stroke of slippage of this tool rest 2 and reach, and and then reach the adjustment that remains in thread B length on the workpiece that blade 41 cuts off.

Moreover, the above-mentioned thread B place correspondence of making flowing mode all with the feeding tooth 6 of four dentation attitudes as implementing, and its feeding tooth 6 has the design of four teeth or five teeth, and feeding tooth 6 position that thread cutting device A advances that concerns down, when using five teeth, see also shown in Figure 9, because of the length broad of five tooth feeding teeth 6 so that when tool rest 2 swings are advanced, its plastic cutter 4 and blade 41 pendulum angles have the phenomenon of touching feeding tooth 6, at this moment, only need corresponding the pull positioning hole 151 of catch 15 of tab 23 of top to be carried out the position adjustment, even catch 15 lateral deviation outward moves, make the catch 15 and the distance of tab 23 shorten, so the travel distance of its tool rest 2 then can be pulled because of supporting of catch 15, and shortens forward travel distance, its plastic cutter 4 is not had with feeding tooth 6 touch.Otherwise, if change the feeding tooth 6 of four teeth into by five teeth, or feel behind the tangent line on the workpiece remaining line tail oversize, influence the outward appearance of workpiece, can loosen the spiral shell spare on the positioning hole 151, make catch 15 screw spiral shell spare again toward inboard the adjustment, so, the travel distance of tool rest 2 can extend, and after reaching blade 41 and cutting off thread B, remains in the workpiece function that tail shortens of reaching the standard grade.

And according to as can be known above-mentioned, improvement has many advantages really compared to prior art by the cable cutter of sewing machine of the present invention, and details are as follows for it:

1. capable of regulating of the present invention cuts off the lower thread cutting device of suture length, is used in tool rest and is provided with tool accent The tab of whole groove cooperates elasticity to support valve part to support the tool rest of pulling, and makes the displacement of can advancing of its cable cutter tool rest, makes plastic cutter The more close seam of stretching, extension (feeding tooth) that reaches blade comes the cutting suture, reaches seam remaining on the workpiece Line can be not long and be affected attractive in appearance.

2. capable of regulating of the present invention cuts off the lower thread cutting device of suture length, utilizes the catch with positioning hole The corresponding top tab of pulling of adjusting makes the feeding toothing that the travel distance of its tool rest can corresponding four, five teeth, or Remain in line tail on the workpiece after feeling to cut off when oversize, can adjust easily fast, reach and save the worker The time effect.

Claims

1. can adjust the following thread cutting device that cuts off suture length for one kind, this time thread cutting device correspondence is assembled in the side of car pin suture, include substrate, corresponding group is established a tool rest in the substrate tank, this tool rest front end is provided with a blade, has the sliding seat of guide groove in the protruding grain of tool rest place corresponding sheathed in addition, and this sliding seat front end winding one plastic cutter, before the sliding seat guide groove, be provided with the turnover groove, this turnover groove is mounted on the protruding grain of the backstay of substrate and is set, simultaneously sliding seat is provided with a caulking groove correspondence and embedded by a swing arm and drive slippage, and slippage is colluded and picked up the car suture and carry out tangent line with blade to make sliding seat interlock plastic cutter, it is characterized in that:

In the side of tool rest be extended with one support piece, and down ora terminalis extend and have the tab of adjusting groove, should support piece counterpart substrate place lock and establish an elasticity to pulling part, and elasticity is supported the part conflict pushing tow of pulling and is supported the piece place in tool rest, continue in the adjustment groove on tab the corresponding protruding grain that is fixed in the gag lever post of substrate that is embedded, be provided with a catch with positioning hole in the side of the corresponding tool rest tab of substrate simultaneously.