CN1590622A - Needle protector for sewing machine - Google Patents
Needle protector for sewing machine Download PDFInfo
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- CN1590622A CN1590622A CN 200410056733 CN200410056733A CN1590622A CN 1590622 A CN1590622 A CN 1590622A CN 200410056733 CN200410056733 CN 200410056733 CN 200410056733 A CN200410056733 A CN 200410056733A CN 1590622 A CN1590622 A CN 1590622A
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- pin
- needle
- looper
- travel direction
- needle member
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- 238000009958 sewing Methods 0.000 title claims abstract description 47
- 230000001012 protector Effects 0.000 title 1
- 230000033001 locomotion Effects 0.000 claims abstract description 69
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000004744 fabric Substances 0.000 claims description 32
- 238000010417 needlework Methods 0.000 claims description 31
- 238000005086 pumping Methods 0.000 claims description 8
- 230000005465 channeling Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
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- 230000009977 dual effect Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000007665 sagging Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000272470 Circus Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
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- 239000011435 rock Substances 0.000 description 1
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Abstract
The needle guard device of a sewing machine of this invention is provided with a needle guard member 15, which is brought into contact with a needle 9 to guide the needle 9 to move along a regular vertical moving track when the needle 9 is made to cooperate with a looper 34 to form a stitch, and a needle guard swing mechanism for causing a needle guard board 13 having the needle guard member 15 to swing horizontally and vertically combinedly, to make the needle guard member 15 perform a horizontal movement along a sewing direction and a vertical movement. Thus, even if a top portion of a needle bends largely, damage of the needle, such as breaking, can be prevented, and the needle 9 and the needle guide member 15 can be maintained in contact with each other for a long time to ensure a catch of a needle thread loop by a looper 34.
Description
Technical field
The present invention relates to the needle protection device of Sewing machines, particularly relate to the Sewing machines with following structure needle protection device, promptly have: the pin that pumps linkedly with the rotation of machine spindle; With the pumping synchronously of this pin, according to the direction of making the travel direction quadrature on draw elliptical orbit shape ground carry out oscillating traverse motion, the needlework ring is caught the looper that forms stitching; The feed dog that travel direction carries out work feed is made by, court synchronous with pumping of described pin; And described pin and looper association is moving contacts the needle member that protects to the motion channeling conduct of pin when forming stitching, with pin.
Background technology
In dual chain type seam or flat-lock machine, when connecting cloth from the top of cloth to bottom dead centre, pin descends when mobile, because of this cloth connects the reasons such as intensity increase and decrease of the decline of resistance and the pin needlework tension force when mobile, make the leading section of pin depart from regular movement locus and bending sometimes.And, rise upward when mobile from bottom dead centre at pin, in order to capture the needlework ring, the oscillating motion track that will carry out the looper of oscillating motion from the turnover of the side of pin has been set the position by the back side of being close to pin for, with with the direction of making the travel direction quadrature on the elliptical orbit that draws, therefore, in case the leading section of pin to the movement locus one lateral bending song of looper, then pin and looper just disturb.
Particularly with the direction of making the travel direction quadrature on and establish many pins; it is the occasion of multineedle sewing machine; in order to cross these and many pins establishing; and make the movement locus of leading section of the looper of oscillating traverse motion become elongated oval shape; even with many and establish wantonly 1 motion elliptical orbit of setting the looper leading section as benchmark in the pin; also the gap can take place between the back side of the pin beyond the pin that is set at this movement locus benchmark and the front of looper, the result produces in the needlework ring that the looper leading section can not enter many well sometimes; be so-called generation bouncing pilotage and disconnected money or when pin intersects with looper the collision and make pin lose such bad phenomenon.
In order to prevent that bending because of this pin from causing that the interference of the pin of generation and looper and the bouncing pilotage in the multineedle sewing machine and disconnected money or pin such bad phenomenon such as lose, the movable needle protection device up and down that in the past had the real public clear 57-4949 communique of a kind of Japan Patent to be disclosed, its structure is for the motion of above-below direction is provided to feed dog, fixed bearing protects needle member on the square of the eccentric part by being supported on driving shaft in the rotatable earth's axis, thus, protect needle member and contact with pin that the decline that connects cloth is moved and this pin is risen when mobile from bottom dead centre making, protect needle member also to follow mobile upward with the form that pin is keeping contacting, make and protect needle member generation circus movement, be directed to regular movement locus position with ascending motion with pin.
Again, the movable needle guidance apparatus of front and back level (needle protection device) that also has a kind of Japanese patent laid-open 4-24084 communique to be disclosed, promptly, lower position at feed dog sets pin guiding driving shaft, the rotation interlock of this pin guiding driving shaft and machine spindle, the level of carrying out linearity on cloth transport direction (making travel direction) and distributing Inbound (direction opposite with making travel direction) back and forth drives and moves, leading section at this driving shaft sets the pin guiding elements, this pin guiding elements be pin from above begin to descend when mobile to bottom dead centre, beginning to send a side (making the travel direction side) from cloth sends into a side (the direction side opposite with making travel direction) to cloth and carries out straight line and move horizontally, when connecting cloth, pin sends the occasion of lateral bending song to cloth, send side and this crooked pin butt from cloth, this pin is back into cloth send into side, bootstrap correction is to making pin be the regular movement locus position of vertical state, again, when pin begins to rise when mobile from bottom dead centre, on the cloth transport direction, carry out straight line and move horizontally and separate with pin.
In above-mentioned traditional needle protection device, the former occasion of movable needle protection device up and down that the real public clear 57-4949 communique of Japan Patent is disclosed, even the work feed spacing (cloth feed amount) of feed dog has been done change, protect needle member can be on cloth feeding direction yet changing position, so pin rise upward from bottom dead centre move to a certain height and position before, protecting needle member is keeping contacting with pin, although the work feed spacing has been done change, the guiding function of pin still can be carried out under the state that nothing regularly departs from reliably, but protrude towards cloth feeding direction regularly from square owing to protect needle member, so Eccentric Load is in square, the action of square is easy to generate rocks, the result is that delicate variation appears in the circus movement track that protects needle member, it is unreliable or unstable to make the guiding function of pin, in long-term the use, exist and to avoid the poor stitching quality that causes because of bouncing pilotage and disconnected money etc., the problem of the decline of quality of sewing.
Again, in above-mentioned traditional needle protection device, the occasion of the latter's that Japanese patent laid-open 4-24084 communique is disclosed the movable needle protection device of front and back level, although the work feed spacing has been done change, not only make and protect needle member reliably to pin channeling conduct effect, and with moving up and down synchronously of pin, making the pin guiding elements carry out straight line in the front and back of cloth feeding direction moves horizontally, thus, when even the amount of bow of pin leading section is big, the state of affairs that also can avoid pin that the collision because of pin and pin guiding elements takes place to lose etc. sustaining damage, but because of the contact time of pin and pin guiding elements very short, so both effectively contact very difficulty of setting regularly.Again specifically, generally the needlework ring that is produced that moves up and down by the flank speed of pin normally forms very for a short time with sagging form, the needlework ring that must make this sagging form not out of shapely, follow the high speed rate of climb of pin, rapidly forwards side carry out that straight line moves horizontally and with pin near to or in contact with.Again, make the needlework ring of sagging form not out of shape in order to ensure protecting needle member, need be below the sagging needlework ring that protects the relative pin of needle member, promptly on the tapering part of the pin leading section taper below the pin hole, set contact position.Yet, under this high-speed condition, though with pin with protect the state that needle member almost approaches a little and obtained contacting of accurate timing.As mentioned above, because of the contact time of pin and pin guiding elements very short, so the front and back runout of the pin that moves up and down can not eliminate high speed fully the time, exist looper and still can not capture needlework ring or looper and pin and disturb (collision) and make pin be subjected to losing the problem such with the flexural deformation equivalent damage.
Summary of the invention
The present invention makes in view of the above-mentioned problems, its purpose is, the needle protection device of following a kind of Sewing machines is provided, even the i.e. big occasion of the amount of bow of pin leading section, also can avoid the state of affairs that sustains damage such as losing because of the pin that collision caused of pin and pin guiding elements, and the contact time that can guarantee pin and pin guiding elements is long, the seizure error of looper to the needlework ring can not occur, also can carry out reliable and high-quality making all the time even use over a long time.
To achieve these goals, needle protection device of the present invention has: the pin that pumps linkedly with the rotation of machine spindle; With the pumping synchronously of this pin, according to the direction of making the travel direction quadrature on draw elliptical orbit shape ground carry out oscillating traverse motion, the needlework ring is caught the looper that forms stitching; The feed dog that travel direction carries out work feed is made by, court synchronous with pumping of described pin; And described pin and looper association is moving contacts with pin when forming stitching, to the needle member that protects of the motion channeling conduct of pin.It is characterized in that, for provide along making the horizontal movement of travel direction and moving up and down to the described needle member that protects, set make that this protects that needle member carries out level and synthesized wobble up and down protect the pin swing mechanism.
Adopt the needle protection device of the present invention of said structure, because when pin and looper association moving formation stitching, the motion of the guide needle that contacts with pin what protect that needle member carries out is level and the motion of synthesized wobble up and down, therefore, after connecting cloth, pin descends when mobile, caused that the leading section of pin departs from the occasion that regular movement locus causes big bending even connect the intensity increase and decrease etc. of resistance and needlework tension force because of cloth, also can avoid because of the horizontal movement of protecting needle member synchronous with moving up and down of pin, promptly protect the relative pin of needle member near the collision of pin that disengaging movement caused and pin guiding elements and the state of affairs that the pin that takes place is lost or pin leading section flexural deformation etc. sustains damage.And, by front and back and the motion of synthesized wobble up and down of protecting needle member, can guarantee that pin is long with the contact time of protecting needle member, so make both contact setting amplitudes regularly well-to-do, even under high-speed condition, protect needle member also not can with formed to the sagging form in the below of pin the needlework ring disarray, so also the tapering part of pin leading section taper that need be below pin hole is set the contact position that protects the relative pin of needle member, both contact regularly designing technique and institutional aspect can both set easily and suitably, and, even because of use causes how many mechanical abrasions etc. has taken place and design deviation regularly, can not occur looper yet and can not capture the needlework ring, or looper and pin disturb (collision) and the pin that causes lose the bad phenomenon that sustains damage with flexural deformation etc., even thereby its effect be long-term use also can be reliably and stably form the regulation stitching, can obtain high-quality sewings.
Particularly the present invention is applicable to technical scheme 7 described structures, promptly, be applied to described pin with the direction of making the travel direction quadrature on and be provided with many, and, the described needle member that protects, many pins that cross its front and establish, the occasion that has formed with the multineedle sewing machine of the motion elliptical orbit almost parallel form of the looper leading section of oscillating traverse motion is effective.That is to say; the occasion of multineedle sewing machine; even with many and wantonly 1 of establishing pin as benchmark the motion elliptical orbit of looper leading section has been done setting; the gap takes place between the back side of the pin beyond the pin of its track benchmark and the front of looper; the looper leading section can not successfully be entered in all a plurality of needlework rings; in when, bouncing pilotage and disconnected money or pin taking place intersecting with looper when, the adverse consequences that can cause pin to be lost easily because of both collisions.Even in this occasion, because protecting moving up and down of needle member, dependence can guarantee that pin is long with the contact time of protecting needle member, so arriving crossing many pins, finishes before the oscillating traverse motion of regulation by looper, make moving of each pin and looper coincide ground to regularly accurate and regular movement locus location guide, can prevent that looper and pin from disturbing, and can be reliably and the looper leading section is entered in the needlework ring, looper can be caught the needlework ring reliably.
In the needle protection device of Sewing machines of the present invention, as make protect the needle member level and carry out synthesized wobble up and down protect the pin swing mechanism, no matter be 2 described as technical scheme, to offer feed dog in order will and moving up and down and to pack into the work feed swing mechanism integrated ground that makes cloth pushing table carry out level and synthesized wobble up and down along the horizontal movement of making travel direction; Still as technical scheme is 3 described, for will be along the horizontal movement of making travel direction and move up and down offer feed dog and with make cloth pushing table carry out level and about the split type setting of work feed swing mechanism of synthesized wobble, particularly resemble the former by packing into work feed swing mechanism integrated ground, then can reduce the occupied space of this two swing mechanism, the needle protection device that is suitable as the Sewing machines of the cylinder type base board with path uses.
Again, in the needle protection device of Sewing machines of the present invention, as described in technical scheme 4,5,6, preferably will be provided in described protecting in the pin swing mechanism along the described level of making travel direction of needle member and the amount of exercise guiding mechanism that resultant motion amount up and down can be adjusted usefulness of protecting.In this occasion, in the time of can be to the test running after the assembling of each member and mechanism etc., pin is simply adjusted with the timing that looper enters the needlework ring with the timing that contacts regularly and contact of protecting needle member, can be eliminated the deviation of two timings, can prevent the generation of above-mentioned the sort of bad phenomenon reliably.
Other purpose of the present invention and effect thereof can be able to clear and definite in the embodiment of following explanation.
Description of drawings
Fig. 1 is the stereoscopic figure of the cylindrical sewing machine of the dual chain type of spininess of the needle protection device of suitable use Sewing machines of the present invention.
Fig. 2 is the exploded perspective view that is provided in the work feed swing mechanism in the cylinder type base board of the same Sewing machines and protects the pin swing mechanism.
Fig. 3 is the vertical view of wanting portion of the assembled state of the same two swing mechanisms of expression.
Fig. 4 is the right side view of Fig. 3.
Fig. 5 is the front view of the biopsy cavity marker devices of wanting portion amplification seen from the cylinder type base board front of the same Sewing machines.
Fig. 6 is pin on the same Sewing machines of expression and the right side view of wanting portion that protects an operating state of needle member.
The amplification stereogram of wanting portion that protect pin guiding function state of Fig. 7 for the optimum structure that protects needle member that is applicable to many (3) needle sewing machine occasion and when illustrating that looper intersects with right pin.
The amplification stereogram of wanting portion that protect pin guiding function state of Fig. 8 for the optimum structure that protects needle member that is applicable to many (3) needle sewing machine occasion and when illustrating that looper intersects with middle pin.
The amplification stereogram of wanting portion that protect pin guiding function state of Fig. 9 for the optimum structure that protects needle member that is applicable to many (3) needle sewing machine occasion and when illustrating that looper intersects with left pin.
Figure 10 is the amplification stereogram of wanting portion of other example of the needle protection device of expression Sewing machines of the present invention.
The specific embodiment
Embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 is the stereoscopic figure of the cylindrical sewing machine of the dual chain type of spininess of the needle protection device of suitable use Sewing machines of the present invention, the cylindrical sewing machine of the dual chain type of this spininess, forwards side is horizontal from the upright top of being located at the column sections 2 on the base station 1 extends for Sewing machines support arm 3, simultaneously, forwards side is horizontal extends from the pars intermedia up and down of column sections 2 for the cylinder type base board 4 of thin tubular, on this cylinder type base board 4 needle plate 5 is installed, the cartridge type cover 6 of the leading section of cylinder type base board 4 and tubular is chimeric.Leading section at described Sewing machines support arm 3 is supporting shank 8, this shank 8 is driven by machine spindle 7, (on business know by the needle bar drive device that is equipped in the Sewing machines support arm 3, omitted and described in detail and diagram) pump, fixing many (shown in the figure 3 in the bottom of this shank 8, also can be more than 2 or 4) pin 9, this pin 9 pumps with the rotation of described machine spindle 7 linkedly by pin folder 10 (with reference to Fig. 5).
Fig. 2 is the exploded perspective view that is provided in the work feed swing mechanism in the described cylinder type base board 4 and protects the pin swing mechanism, and Fig. 3 is the vertical view of the assembled state of these two swing mechanisms of expression, and Fig. 4 is the right side view of Fig. 3.In these Fig. 2～Fig. 4, the 11st, preceding cloth pushing table, the 12nd, back cloth pushing table, the 13rd, protect the pin platform, leading section at front and back cloth pushing table 11,12, be installed with pumping of pin 9 and synchronously cloth court made preceding feed dog and the back feed dog (, having omitted diagram) that travel direction carries out feeding because of this is known structure.
At the leading section that protects pin platform 13, and protect needle member 15 by protecting pin erecting bed 14 fixed bearings, this protects needle member 15 and contacts with the back side of pin 9, motion channeling conduct to pin 9, and, in the 11a of grooving portion that forms below each length direction pars intermedia of 11,12,13,12a, the 13a, inserting logical the support by accessory plate 16,17,18 can front and back slip shared square 19 freely.At double- fork part 11b, 12b, the 13b that described each rearward end of 11,12,13 forms, also inserting logical the support can front and back slip shared square 40 freely.In described each 11a of grooving portion of 11,12,13, the rear positions of 12a, 13a, form slotted hole 11c, 12c, the 13c of substantially elliptical again.
On the other hand, on described machine spindle 7, feeding rod 21 up and down, and by eccentric wheel 22 setting-ins and to protect shank 23 by feeding eccentric wheel 20 setting-ins up and down.At the described leading section of feeding rod 21 up and down, by pin 24 and the rear end double-fork part 25a binding of feeding arm platform 25 up and down, simultaneously at the described leading section that protects shank 23, (on business know with the front and back feeding rod that is flush-mounted on the described machine spindle 7 by front and back feeding eccentric wheel, omit diagram) connect, by pin 29 the other end of the swing connecting bar 27 of swing around swinging axle 26 and the rearward end of protecting pin platform connecting rod 28 are linked.
On the front end double-fork part 25b of described feeding arm platform 25 up and down, described front and back cloth pushing table 11,12 and protect pin platform 13 and be contained with the state that overlaps, insert and logically to remain in these each 11,12, the central portion of the described shared square 19 on 13 is by pin 30 and feeding arm platform 25 binding supports up and down, simultaneously each 11,12, the slotted hole 11c of the substantially elliptical that forms on 13,12c, in the 13c, insert and to lead to fixed mount and be located at the arm of feeding up and down pin 31 between the subtend plate of feeding arm platform 25 up and down, the described leading section of pin platform connecting rod 28 that protects is by screw 32 and the position binding of protecting close the slotted hole 13c back on the pin platform 13.
According to above inscape, constitute the work feed swing mechanism and protected the pin swing mechanism, described work feed swing mechanism, by making along with the swing connecting bar 27 of described machine spindle 7 rotations is carried out swing around swinging axle 26, protect also swing thereupon of pin platform connecting rod 28, by this swing and swinging up and down of feeding arm platform 25 up and down, cloth pushing table 11 before and after making, 12 carry out synthesized wobble on front and back level and above-below direction, offer aforesaid front and back feed dog will and moving up and down along the front and back horizontal movement of making travel direction, the described pin swing mechanism that protects, make the described pin platform 13 that protects carry out synthesized wobble in front and back level and above-below direction, promptly protect needle member 15 will along the front and back horizontal movement of making travel direction and moving up and down to offer, these two swing mechanisms are enclosed in the described cylinder type base board 4 integratedly.
As shown in Figure 5, the following quadrate part of the needle plate 5 in the leading section of described cylinder type base board 4, be equipped with the looper 34 of oscillating traverse motion, the swing campaign of the looper driving shaft 33 of the rotation interlock of these looper 34 dependence and described machine spindle 7, with pumping synchronously of pin 9, cross and make on the direction of travel direction quadrature from the side and the many pins of establishing 9, the movement locus form of elongated oval shape ground carries out oscillating traverse motion so that its leading section 34a draws, rely on the oscillating traverse motion of this looper 34, the needlework ring that each pin 9 is formed is caught successively, and form fixed stitching.
The following describes the action and the effect thereof of needle protection device of the dual chain type multineedle sewing machine of cartridge type of said structure.
When the rotation of pin 9 and machine spindle 7 begins to descend when mobile linkedly, rely on above-mentioned front and back level of protecting the pin swing mechanism and synthesized wobble up and down, provide the resultant motion of below and front and back horizontal direction to protecting pin platform 13, thus, protect needle member 15 and begin forwards from the rear upper side of making travel direction that lower side moves.Secondly, after connecting cloth, pin 9 arrives bottom dead centre, when beginning to rise from this bottom dead centre when mobile, as shown in Figure 4, contact with the back side of pin 9 because of protecting needle member 15, even so because of the perforation resistance of cloth etc. makes the leading section of pin 9 rearward crooked, also can be with its curvature correction, with pin 9 to regular movement locus location guide.
When pin 9 begins to rise when mobile from bottom dead centre, looper 34 carries out oscillating motion with the form that the back position of being close to this pin 9 from the position, side of pin 9 passes through, enter in the needlework ring that the below of each pin 9 forms, successively these needlework rings are caught, at this moment, owing to rely on above-mentioned front and back level of protecting the pin swing mechanism and synthesized wobble up and down, provide the resultant motion of top and rear horizontal direction to protecting pin platform 13, therefore protected needle member 15 before pin 9 arrives the specified altitude position from bottom dead centre, with keeping to the contact condition of pin 9 follow rising, passed through sometime after the length, both are 15 years old, 9 are still keeping contacting, with the curvature correction of pin 9, can bring into play reliably its effect to regular movement locus location guide.Then, protect needle member 15 and separate, turn back to the top position, rear of making travel direction as shown in Figure 6 with pin 9.
Like this, when pin 9 and looper 34 associations actions when forming stitching down, owing to contact with pin 9, guide this motion what protect that needle member 15 carries out is level and the motion of synthesized wobble up and down, even so caused that because of the cloth of pin 9 connects resistance etc. its leading section departs from the occasion that regular movement locus causes big bending, the rising that begins along with pin 9, contact with the approaching of pin 9 by protecting needle member 15, the bending of recoverable pin 9, to regular movement locus location guide, therefore, can not only avoid losing or the state of affairs that pin leading section flexural deformation etc. sustains damage of the pin 9 that takes place because of pin 9 and the collision of protecting needle member 15, and, by protecting moving up and down of needle member 15, can guarantee with the contact time of pin 9 long, so can make both 15,9 contact setting amplitude regularly is well-to-do, even because of mechanical abrasion etc. taken place slightly pin 9 with protect needle member 15 contact regularly and should contact timing and the departing from of the timing that enters the needlework ring of looper 34, also can avoid occurring protecting needle member 15 will under fall in below the pin 9 the formed needlework ring of form and disarray and cause looper 34 mistakes to enter the needlework ring and can not capture the needlework ring, perhaps looper 34 disturbs (collision) with pin 9 and causes losing and such bad phenomenon that sustains damage such as flexural deformation of pin 9, even use over a long time, also can obtain reliably and stably to form the high-quality sewings of regulation stitching.
Below, expressly optimum structure that protects needle member 15 and the consequent pin guiding function that is applicable to the multineedle sewing machine occasion is elaborated with reference to Fig. 7～Fig. 9.
Promptly, for the many pins 9 on the direction of crossing and being located at and making the travel direction quadrature (have been represented right pin 9R in the following description, middle pin 9C, 3 pins of left side pin 9L), so that the movement locus of the leading section 34a of the looper 34 of oscillating traverse motion becomes elongated oval shape, if the motion elliptical orbit of this looper leading section 34a is set in the back side of right pin 9R, then according to middle pin 9C, the order of left side pin 9L, the gap of the back side separately and looper leading section 34a increases slightly gradually, if irrespectively make looper 34 carry out oscillating motion therewith, then the leading section of looper 34 can not successfully enter by middle pin 9C, in the needlework ring that left side pin 9L forms, so-called bouncing pilotage and disconnected money promptly take place or when pin 9 intersects with looper 34, take place both the collision and pin 9 is lost such bad phenomenon, this is very clear and definite.
In view of this point, in being applicable to the form of multineedle sewing machine, the motion elliptical orbit of the leading section 34a of looper 34 is set in the back side of left pin 9L, simultaneously the described front 15a that protects needle member 15 has been formed following state.Promptly, if the motion elliptical orbit of this looper 34 leading section 34a is set in the back side of left pin 9L, then according to right pin 9R and between the leading section of the back side of pin 9C and looper 34, produce little gap successively, the leading section of looper 34 can not enter by in this right side pin 9R, the formed needlework ring of middle pin 9C, promptly, so-called bouncing pilotage and disconnected money takes place.For this reason, in the following way, promptly as shown in Figure 7, when the leading section 34a of looper 34 intersects with right pin 9R, the described front 15a that protects needle member 15 is contacted with the back side of right pin 9R, make this right side pin 9R slightly forwards proofread and correct guiding with releasing, secondly, as shown in Figure 8, when the leading section of looper 34 intersects with middle pin 9C, the described front 15a that protects needle member 15 is contacted with the back side of middle pin 9C, make that pin 9C more slightly forwards proofreaies and correct guiding than right pin 9R with releasing in this, then, as shown in Figure 9, when the leading section of looper 34 intersects with left pin 9L, the described front 15a that protects needle member 15 is slightly contacted with the back side of left pin 9R, or, extremely closely left pin 9L is proofreaied and correct guiding, formed the front 15a and the pin 9R that protect needle member 15 thus, 9C, 9L and set direction not parallel, and it is big with the motion elliptical orbit of the leading section 34a of looper 34 to parallel state.Like this, the leading section of looper 34 and all pin 9R, 9C, 9L do not disturb, the position at the back side by being close to these pins, and its leading section enters in all needlework rings, can not slip up and reliably these needlework rings is caught.
Figure 10 is the amplification stereogram of wanting portion of other example of the needle protection device of expression Sewing machines of the present invention.In the present embodiment, be not resemble shown in Figure 2 at front and back cloth pushing table 11,12 the 11a of grooving portion, 12a is interior by accessory plate 16,17 can insert the logical square 19 that is keeping in front and back sliding freely, but in protecting the 13a of grooving portion of pin platform 13, can insert logical another square 19A that keeping sliding freely in front and back by accessory plate 18 (with reference to Fig. 2), and, be not resemble shown in Figure 2 by described square 19 and feeding arm platform 25 are up and down linked the pin 30 of supporting usefulness, but by other 1 pin 30A with eccentric part 30a, to protect pin platform 13 and link support with feeding arm platform 25 (with reference to Fig. 2) up and down, rotation around the bearing pin heart of pin 30A by this band eccentric part 30a is fixed, and has constituted front and back level and the adjustable amount of exercise guiding mechanism of resultant motion amount up and down to protecting needle member 15.In this occasion, as long as arbitrarily pin 30A is rotated fixing operation, just can be when test running after the assembling of each member and mechanism etc., can be simply to pin 9 with protect needle member 15 contact regularly and contact is regularly adjusted with the timing that enters the needlework ring of looper 34, so that deviation does not take place in its two timing, can prevent the generation of above-mentioned the sort of bad phenomenon reliably.
In the above-described embodiments, to protect the pin swing mechanism and work feed swing mechanism integrated is packed into, because of the space that these mechanisms are occupied little, so be particularly suitable for the needle protection device of the Sewing machines of illustrative cylinder type base board with path among Fig. 1, but also this can be protected the pin swing mechanism and the work feed swing mechanism is split type sets.
Again, except dual chain type Sewing machines, the present invention also is applicable to flat-lock machine, can obtain same effect and effect.And, particularly effective to multineedle sewing machine, but also be applicable to the single needle Sewing machines.
Claims (7)
1. the needle protection device of a Sewing machines has: the pin that pumps linkedly with the rotation of machine spindle; With the pumping synchronously of this pin, according to the direction of making the travel direction quadrature on draw elliptical orbit shape ground carry out oscillating traverse motion, the needlework ring is caught the looper that forms stitching; The feed dog that travel direction carries out work feed is made by, court synchronous with pumping of described pin; And described pin and looper association is moving contacts the needle member that protects to the motion channeling conduct of pin when forming stitching, with pin, it is characterized in that,
For provide along making the horizontal movement of travel direction and moving up and down to the described needle member that protects, set make that this protects that needle member carries out level and synthesized wobble up and down protect the pin swing mechanism.
2. the needle protection device of Sewing machines as claimed in claim 1, it is characterized in that, the described pin swing mechanism that protects, to offer described feed dog in order will and moving up and down, to pack into the work feed swing mechanism integrated ground that makes cloth pushing table carry out level and synthesized wobble up and down along the horizontal movement of making travel direction.
3. the needle protection device of Sewing machines as claimed in claim 1, it is characterized in that, the described pin swing mechanism that protects, to offer described feed dog in order will and moving up and down, to carry out the split type setting of work feed swing mechanism of level and synthesized wobble up and down with making cloth pushing table along the horizontal movement of making travel direction.
4. the needle protection device of Sewing machines as claimed in claim 1 is characterized in that, will be provided in described protecting in the pin swing mechanism along the described level of making travel direction of needle member and the amount of exercise guiding mechanism that resultant motion amount up and down can be adjusted usefulness of protecting.
5. the needle protection device of Sewing machines as claimed in claim 2 is characterized in that, will be provided in described protecting in the pin swing mechanism along the described level of making travel direction of needle member and the amount of exercise guiding mechanism that resultant motion amount up and down can be adjusted usefulness of protecting.
6. the needle protection device of Sewing machines as claimed in claim 3 is characterized in that, will be provided in described protecting in the pin swing mechanism along the described level of making travel direction of needle member and the amount of exercise guiding mechanism that resultant motion amount up and down can be adjusted usefulness of protecting.
7. as the needle protection device of each described Sewing machines in the claim 1～6, it is characterized in that, described pin with the direction of making the travel direction quadrature on and be provided with many, and, the described needle member that protects, many pins that cross its front and establish, the form of the motion elliptical orbit almost parallel of the looper leading section of formation and oscillating traverse motion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-323748 | 2003-08-11 | ||
| JP2003323748 | 2003-08-11 | ||
| JP2003323748A JP4196378B2 (en) | 2003-08-11 | 2003-08-11 | Sewing machine needle receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590622A true CN1590622A (en) | 2005-03-09 |
| CN1590622B CN1590622B (en) | 2012-02-29 |
Family
ID=34372731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410056733 Expired - Fee Related CN1590622B (en) | 2003-08-11 | 2004-08-11 | Needle protector for sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4196378B2 (en) |
| CN (1) | CN1590622B (en) |
| TW (1) | TWI248486B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491622C (en) * | 2006-12-14 | 2009-05-27 | 浙江宝石缝纫机股份有限公司 | Guard mechanism of frizzing machine |
| CN101343819B (en) * | 2007-07-09 | 2013-03-06 | Juki株式会社 | Sewing needle meeting device of chain seam sewing machine |
| CN109385765A (en) * | 2018-10-30 | 2019-02-26 | 杰克缝纫机股份有限公司 | A kind of wire loop rock-steady structure of flat seaming machine |
| CN115110213A (en) * | 2021-03-17 | 2022-09-27 | 杰克科技股份有限公司 | Looper thread hooking mechanism and sewing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7126305B1 (en) * | 2022-04-07 | 2022-08-26 | 株式会社森本製作所 | Feed-off-the-arm sewing machine |
-
2003
- 2003-08-11 JP JP2003323748A patent/JP4196378B2/en not_active Expired - Lifetime
-
2004
- 2004-07-28 TW TW93122479A patent/TWI248486B/en active
- 2004-08-11 CN CN 200410056733 patent/CN1590622B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491622C (en) * | 2006-12-14 | 2009-05-27 | 浙江宝石缝纫机股份有限公司 | Guard mechanism of frizzing machine |
| CN101343819B (en) * | 2007-07-09 | 2013-03-06 | Juki株式会社 | Sewing needle meeting device of chain seam sewing machine |
| CN109385765A (en) * | 2018-10-30 | 2019-02-26 | 杰克缝纫机股份有限公司 | A kind of wire loop rock-steady structure of flat seaming machine |
| CN109385765B (en) * | 2018-10-30 | 2020-09-01 | 杰克缝纫机股份有限公司 | Wire loop stabilizing structure of flat seaming machine |
| CN115110213A (en) * | 2021-03-17 | 2022-09-27 | 杰克科技股份有限公司 | Looper thread hooking mechanism and sewing machine |
| CN115110213B (en) * | 2021-03-17 | 2023-06-27 | 杰克科技股份有限公司 | Looper thread hooking mechanism and sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200517547A (en) | 2005-06-01 |
| TWI248486B (en) | 2006-02-01 |
| JP2005058700A (en) | 2005-03-10 |
| JP4196378B2 (en) | 2008-12-17 |
| CN1590622B (en) | 2012-02-29 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120229 Termination date: 20210811 |