CN106245249B - A kind of automatic threading device of sewing machine - Google Patents

A kind of automatic threading device of sewing machine Download PDF

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Publication number
CN106245249B
CN106245249B CN201610770924.9A CN201610770924A CN106245249B CN 106245249 B CN106245249 B CN 106245249B CN 201610770924 A CN201610770924 A CN 201610770924A CN 106245249 B CN106245249 B CN 106245249B
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CN
China
Prior art keywords
threading
wire portion
hanging wire
axis
rotating bar
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Application number
CN201610770924.9A
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Chinese (zh)
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CN106245249A (en
Inventor
丁建明
季宗智
蒋昌林
潘建国
吴善敏
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Jack Technology Co Ltd
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Jack Sewing Machine Co Ltd
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Priority to CN201610770924.9A priority Critical patent/CN106245249B/en
Publication of CN106245249A publication Critical patent/CN106245249A/en
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Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B87/00Needle- or looper- threading devices
    • D05B87/02Needle- or looper- threading devices with mechanical means for moving thread through needle or looper eye

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

The present invention provides a kind of automatic threading device of sewing machine, comprising: hanging wire portion (1) for hanging line, and can be rotated;Crimping (2), for clamping a part for hanging on the line of the hanging wire portion (1), and can be relative to the rotation of hanging wire portion (1) opposite direction;Threading hook for running stitch (3), it is connected to the hanging wire portion (1), the pin hole of sewing needle (5) can be pierced into the rotation of the hanging wire portion (1) and catches on the line being connected between the hanging wire portion (1) and the crimping (2) and rotates backward the pin hole for being pierced by sewing needle (5) with the hanging wire portion (1) to go out the tape caught on;Driving mechanism (4), for driving the relative rotation of the hanging wire portion (1) and the crimping (2).The present invention can be used on industrial flat bed sewing machine, and can be able to achieve single drive to avoid to pin hole, working efficiency is increased manually and be completed mechanism decline, rotate, threading, the functions such as rise, it is simpler convenient to operate.

Description

A kind of automatic threading device of sewing machine
Technical field
The present invention relates to technical field of sewing machines, more particularly to a kind of automatic threading device of sewing machine.
Background technique
There is no automatic threading device on current industrial sewing machine, is required when broken string, broken needle occurs manually Pin hole is threaded, time-consuming and laborious, people or the elderly for dysphotia can especially generate puzzlement.
The existing automatic threading device of flat seam machine mainly appears on household machine, can be divided into two major classes: one kind is structure ratio It is relatively simple, but also relatively low device, this kind of device need two hands to be cooperated to the degree of automation when threading, first Line is suspended to threader up, then hand takes line, and a hand driving device moving handle line pierces into line hook, complete threading with Only have one section of suture to enter pin hole afterwards, it is also necessary to which hand handle line pulls out, and integrated operation is more complicated and time-consuming, can play auxiliary The effect of threading cannot still achieve the purpose that Quick-threading.Another kind of is the dress that the degree of automation is higher but structure is more complicated It sets, line is first suspended to designated position by this kind of device needs, and then single hand driving device, device pass through the phase interaction of self structure With entire threading process is completed, the cooperation of another hand is not needed, it is easy to operate and time-consuming few.
However these automatic threading devices are only applicable to household machine use, compared with industrial flat bed sewing machine, two class sewing machines are deposited In bigger difference, thread direction, grease proofing problem, in terms of be different from, the two differs greatly how It designs one kind and is suitable for industrial flat bed sewing machine and the simple automatic threading device of structure, be present invention technical problem to be solved.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of self-threading of sewing machine dresses It sets, for solving the problems, such as that automatic threading device is only applicable to household machine use in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of automatic threading device of sewing machine, described Automatic threading device includes at least: hanging wire portion, for hanging line, and can be rotated;Crimping hang on the hanging wire for clamping A part of the line in portion, and can be relative to the rotation of hanging wire portion opposite direction;Threading hook for running stitch is connected to the hanging wire portion, can be with institute The rotation for stating hanging wire portion pierce into the pin hole of sewing needle and catch on the line being connected between the hanging wire portion and the crimping and The pin hole for being pierced by sewing needle is rotated backward with the hanging wire portion to go out the tape caught on;Driving mechanism, it is described for driving The relative rotation in hanging wire portion and the crimping.
Preferably, the driving mechanism includes threading axis, hanging wire portion, crimping, threading hook for running stitch can be driven to move up and down, and work as Hanging wire subordinate rotates when being down to the consistent position of height of the pin hole of the threading hook for running stitch and sewing needle, under the threading axis End is connected with the first rotating bar rotated with the rotation of the threading axis, and one end of first rotating bar is hinged with described The rotation of first rotating bar and the second rotating bar, the third rotating bar rotated, one end of second rotating bar and the hanging wire The one end in portion is hinged, and one end of the third rotating bar and one end of the crimping are hinged, the hanging wire portion, crimping difference Second rotating bar, third rotating bar drive under rotate in the opposite direction, the other end in the hanging wire portion with it is described The other end of crimping is hinged.
Preferably, the driving mechanism includes threading axis, hanging wire portion, crimping, threading hook for running stitch can be driven to move up and down, and work as Hanging wire subordinate rotates when being down to the consistent position of height of the pin hole of the threading hook for running stitch and sewing needle, under the threading axis End is connected with the driving gear rotated with the rotation of the threading axis, and the driving gear is meshed with a driven gear, institute State that crimping is fixedly connected on the driving gear, the hanging wire portion is fixedly connected on the driven gear, the hanging wire Portion, crimping respectively the driven gear, driving gear drive under rotate in the opposite direction.
Preferably, the threading axis upper end is fixedly connected with a guide pin, and periphery is arranged with a guide sleeve, the guiding It putting on and is provided with a guide groove being obliquely extended, the guide pin is stuck in the guide groove, and can be moved along the guide groove, It is described threading axis lower end periphery be additionally provided with a positioning block, the locating piece is fixed on a support frame, the guide sleeve to It can be covered when lower mobile and be additionally provided with guide sleeve pressure spring on the inside of the outside of the locating piece, the guide sleeve.
Preferably, spacer pin is provided with above the threading axis.
Preferably, the driving mechanism further includes a fixing axle, and the guide sleeve is also set in the upper end of the fixing axle Periphery, the periphery of the lower end of the fixing axle are provided with a fixing sleeve, and the fixing sleeve is fixed on support frame as described above, fixing axle On be also arranged with a reset spring, and the reset spring is resisted against between the guide sleeve and the fixing sleeve, described solid The bottom end of dead axle is fixedly connected in a fixed plate, and a through-hole is additionally provided in the fixed plate, and the lower end of the threading axis is worn The through-hole is crossed, and the threading axle position is less than the aperture of the through-hole, the aperture of the through-hole in the diameter in the through-hole Less than the threading axle position in the diameter of the through-hole external upper.
Preferably, the driving mechanism further includes button, button set, connecting pin, spill spin block, spill spin block torsional spring, force-application block, The button is connect by button set and the connection pin connection, the connecting pin with the spill spin block, the spill spin block Torsional spring is set on the connecting pin, and both ends are born against in button set on the spill spin block, and the force-application block is solid Surely it is connected to the upper end of the spill spin block, the upper surface that the guide sleeve is set in the part in the fixing axle is an inclined-plane, The force-application block exerts a force under the downward driving of the button to the inclined-plane of the guiding set upper side, and moves down along inclined-plane.
Preferably, the button set is set in the outside of a guiding axis, and can move up and down along the guiding axis.
Preferably, the driving mechanism further includes a swing rod, drive shaft, automated drive, and the swing rod passes through a rotation Axis connection is on the casing of sewing machine and its both ends can be rotated around the rotation axis, and one end of the swing rod is connected with the button It connects, the other end is hinged on the lower end of the drive shaft, and the upper end of the drive shaft is connected with the automated drive, the drive Moving axis can move up and down under the driving of the automated drive.
Preferably, the automated drive is electromagnet or cylinder.
As described above, the automatic threading device of sewing machine of the invention, has the advantages that
1, it can be used on industrial flat bed sewing machine, and working efficiency can be increased, not for eyesight to avoid manually to pin hole Good person and new hand's effect are bigger;
2, it is able to achieve single drive and completes mechanism decline, rotate, threading, the functions such as rise, it is simpler convenient to operate;
3, interference will not be generated to existing work in operation, and installing and dismounting is simple.
Detailed description of the invention
Fig. 1 is shown as the threading mechanism structural representation of the embodiment one of the automatic threading device of sewing machine of the invention Figure.
The threading mechanism that Fig. 2 is shown as before the rotation of the embodiment one of the automatic threading device of sewing machine of the invention shows It is intended to.
Fig. 3 is shown as the threading mechanism side view of the embodiment one of the automatic threading device of sewing machine of the invention.
Fig. 4 is shown as the driving mechanism main view of the automatic threading device of sewing machine of the invention.
Fig. 5 is shown as the driving mechanism side view of the automatic threading device of sewing machine of the invention.
Fig. 6 is shown as the driving mechanism schematic view of the mounting position of the automatic threading device of sewing machine of the invention.
Fig. 7 is shown as the overall structure diagram of the automatic threading device of sewing machine of the invention.
Fig. 8 is shown as the overall structure schematic view of the mounting position of the automatic threading device of sewing machine of the invention.
Fig. 9 is shown as the controller schematic diagram of the automatic threading device of sewing machine of the invention.
Figure 10 is shown as the threading mechanism schematic diagram of the embodiment two of the automatic threading device of sewing machine of the invention.
Component label instructions
1 hanging wire portion
11 connecting cranks
12 hanging wires hook
13 connecting crank torsional springs
2 crimpings
21 coil holders
211 first clamp slots
22 clamping plates
221 second clamp slots
23 clamp tension springs
3 threading hook for running stitch
411 threading axis
412 guide pins
413 guide sleeves
414 guide grooves
415 locating pieces
416 guiding pressure springs
417 spacer pins
418 fixing axles
419 fixing sleeves
410 reset springs
421 first rotating bars
422 second rotating bars
423 third rotating bars
424 driving wheels
425 driven wheels
431 buttons
432 button sets
433 connecting pins
434 spill spin blocks
435 spill spin block torsional springs
436 force-application blocks
437 guiding axis
438 positioning steps
441 swing rods
442 drive shafts
443 automated drives
444 rotation axis
445 jacks
446 pins
5 sewing needles
611 support frames
612 heads
613 panel pads
614 casings
615 controllers
616 controller panels
617 thread cutters
71 First Line hook retaining frames
72 second line hook retaining frames
8 fixed plates
81 through-holes
91 first connecting shafts
92 second connecting shafts
93 third connecting shafts
94 the fourth connecting shafts
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Fig. 1 is please referred to Figure 10.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., are only used To cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill In the range of art content can cover.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Embodiment one:
As shown in Figure 1, the present invention provides a kind of automatic threading device, including hanging wire portion 1, for hanging line, and can be rotated; Crimping 2, for clamping a part for hanging on the line in hanging wire portion 1, and can be relative to the rotation of 1 opposite direction of hanging wire portion;Threading hook for running stitch 3, it is connected to hanging wire portion 1, the pin hole of sewing needle 5 can be pierced into the rotation in hanging wire portion 1 and catch on and be connected to hanging wire portion 1 and crimping Line between 2 and the pin hole for being pierced by sewing needle 5 is rotated backward to go out the tape caught on hanging wire portion 1;Driving mechanism 4, For driving the relative rotation in hanging wire portion 1 Yu crimping 2.Driving mechanism 4 includes threading axis 411, can drive hanging wire portion 1, clamp Portion 2, threading hook for running stitch 3 move up and down, and when the consistent position of the height for dropping to the pin hole of threading hook for running stitch 3 and sewing needle 5 when hanging wire portion 1 It is rotated, the lower end of threading axis 411 is connected with the first rotating bar 421 rotated with the rotation of threading axis 411, the first rotation One end of bar 421 is hinged with the second rotating bar 422, the third rotating bar 423 rotated with the rotation of the first rotating bar 421, the The one end in one end of two rotating bars 422 and hanging wire portion 1 is hinged, one end of third rotating bar 423 one end and crimping 2 is hinged, Hanging wire portion 1, crimping 2 respectively the second rotating bar 422, third rotating bar 423 drive under rotate in the opposite direction, hanging wire The other end in portion 1 and the other end of crimping 2 are hinged.
Hanging wire portion 1 includes a connecting crank 11, hanging wire hook 12, and hanging wire hooks 12 and is arranged on connecting crank 11.Threading hook for running stitch 3 One end is connected on connecting crank 11, and First Line hook retaining frame 71 and the second line hook retaining frame 72 are also connected on connecting crank 11, First Line hook retaining frame 71 and the second line hook retaining frame 72 are located at the two sides of threading hook for running stitch 3.The company of being additionally provided on connecting crank 11 Crank torsional spring 13 is connect, one end is resisted against on threading hook for running stitch 3, and the wire clamp for catching on threading hook for running stitch 3 is tight.Crimping includes a coil holder 21, a clamping plate 22 and a clamp tension spring 23 are provided with the first clamp slot 211 on coil holder 21, and clamping plate 22 is mounted on coil holder 21, And can be rotated relative to coil holder 21, it is provided with the second clamp slot 221, and can be overlapped with the first clamp slot 211, clamp tension spring 23 Both ends be connected on coil holder 21 and clamping plate 22.First rotating bar 421 passes through the first connecting shaft 91 and the second rotating bar 422, one end of third rotating bar 423 is hinged, and the other end of the second rotating bar 422 passes through the second connecting shaft 92 and connecting crank 11 One end it is hinged, the other end of third rotating bar 423 is hinged by third connecting shaft 93 and one end of coil holder 21, connecting crank 11 The other end and the other end of coil holder 21 be hinged by the fourth connecting shaft 94.Second rotating bar 422 and the first rotating bar 421 at Obtuse angle, third rotating bar 423 and the first rotating bar 421 are at an acute angle, and threading axis 411 drives 421 synchronous rotary of the first rotating bar, the One rotating bar 421 drives the second rotating bar 422, third rotating bar 423 to rotate, and the second rotating bar 422, third rotating bar 423 are divided Not Dai Dong connecting crank 11, coil holder 21 relatively rotated centered on the fourth connecting shaft 94.
As shown in Fig. 2, one end of clamping plate 22 is riveted on coil holder 21 and can be opposite for the threading mechanism schematic diagram before rotation Coil holder 21 rotates, and the other end hangs one end of clamp tension spring 23, and this one end and second of clamp tension spring 23 is hung on clamping plate 22 Rotating bar 422 is in contact, and under the active force of the second rotating bar 422, the second clamp slot 221 coincides with the first clamp slot 211, Hanging wire hook 12 is passed suture through to hang in the second clamp slot 221 of the first clamp slot 211 of coil holder 21, clamping plate.It threads under axis 411 It is rotated when being down to the consistent position of height of threading hook for running stitch 3 and the pin hole of sewing needle 5, drives the rotation of the first rotating bar 421, the One rotating bar 421 drives the second rotating bar 422, third rotating bar 423 to rotate, so that in the second rotating bar 422, third rotating bar Under 423 drive, connecting crank 11, coil holder 21 are rotated in the opposite direction centered on the fourth connecting shaft 94, when rotation, are such as schemed It 1, is the schematic diagram of threading mechanism rotation process, the second rotating bar 422 is separated with 22 phase of clamping plate, in clamp tension spring shown in Fig. 3 Under 23 pulling force effect, clamping plate 22 is rotated around riveting position, and the second clamp slot 221 is not overlapped with the first clamp slot 211, so that position It is jammed in the second clamp slot 221 and the suture in the first clamp slot 211, and as connecting crank 11, coil holder 21 are to opposite The rotation in direction, the suture positioned at hanging wire hook 12 and the first clamp slot 211 is tightened up, at this point, threading hook for running stitch 3 is with connecting crank 11 The pin hole for being rotated into sewing needle 5 suture being tightened up can just be hung on threading hook for running stitch 3, First Line hook retaining frame 71 with And second line hook retaining frame 72 threading hook for running stitch 3 enter sewing needle 5 pin hole when positioned at sewing needle two outside, play protection threading hook for running stitch 3 and correct enter pin hole track effect, connecting crank torsional spring 13 be resisted against one end on threading hook for running stitch 3 threading hook for running stitch 3 enter The outside of sewing needle is resisted against when the pin hole of sewing needle 5, when threading hook for running stitch 3, which catches on suture, is pierced by pin hole, connecting crank torsional spring 13 One end be resisted against again and to hook suture on threading hook for running stitch 3 on threading hook for running stitch 3 and be clamped.
As shown in fig. 4-5, threading 411 upper end of axis is fixedly connected with a guide pin 412, and periphery is arranged with a guide sleeve 413, a guide groove 414 being obliquely extended is provided on guide sleeve 413, and guide pin 412 is stuck in guide groove 414, and can be along leading Mobile to slot 414, the periphery of threading 411 lower end of axis is additionally provided with a positioning block 415, and locating piece 415 is fixed on a support frame 611 On, it can be covered when guide sleeve 413 moves down and be additionally provided with guide sleeve pressure spring on the inside of the outside of locating piece 415, guide sleeve 413 416.The top of threading axis 411 is provided with spacer pin 417.Driving mechanism 4 further includes a fixing axle 418, and guide sleeve 413 is also arranged In the upper end of fixing axle 418 periphery, the periphery of the lower end of fixing axle 418 is provided with a fixing sleeve 419, and fixing sleeve 419 is fixed on Also be arranged with a reset spring 410 on support frame 611, in fixing axle 418, and reset spring 410 be resisted against guide sleeve 413 with Between fixing sleeve 419.The bottom end of fixing axle 418 is fixedly connected in a fixed plate 8, and a through-hole 81 is additionally provided in fixed plate 8, The lower end for threading axis 411 passes through through-hole 81, and threads axis 411 and be located at the aperture that the diameter in through-hole 81 is less than through-hole 81, through-hole 81 aperture is less than the diameter that threading axis 411 is located at 81 external upper of through-hole.And thread axis 411 lower end pass through through-hole 81 with The connection of first rotating bar 421 drives threading axis 411 to move down when guide sleeve 413 moves down, since threading axis 411 is located at The diameter of 81 external upper of through-hole is greater than the aperture of through-hole 81, and therefore, threading axis 411, which moves down, will drive fixed plate 8 downwards Mobile, since the bottom end of fixing axle 418 is fixed in fixed plate 8, fixing axle 418 can move down under the drive of fixed plate 8. When being moved to 413 sets of guide sleeve when the outside of locating piece 415, guide pin 412 and locating piece 415 contact (as shown in Figure 5), wear Line hook 3 is consistent with the height of the pin hole of sewing needle 5, and during guide sleeve 413 continues to move down, guide pin 412 starts It is moved along guide groove 414, so that threading axis 411 rotates, and since guide pin 412 is contacted with locating piece always, so that threading Axis 411 no longer moves down, and only rotates, and this guarantees threading hook for running stitch 3 to penetrate in pin hole.As a result, in threading axis 411 Rotation under drive the synchronous rotary of the first rotating bar 421.
Driving mechanism 4 further includes button 431, button set 432, connecting pin 433, spill spin block 434, spill spin block torsional spring 435, applies Power block 436, button 431 are connect by button set 432 with connecting pin 433, and connecting pin 433 is connect with spill spin block 434, and spill spin block is turned round Spring 435 is set on connecting pin 433, and both ends are born against in button set 432 on spill spin block 434, and force-application block 436 fixes company It connects in the upper end of spill spin block 434, the upper surface that guide sleeve 413 is set in the part in fixing axle 418 is an inclined-plane, force-application block 436 under the downward driving of button 431, exert a force, and move down along inclined-plane to the inclined-plane of 413 upper end of guide sleeve.Fixing axle 418 Upper surface may be alternatively provided as an inclined-plane.Button set 432 is set in the outside of a guiding axis 437, and can be along about 437 guiding axis It is mobile.Guide sleeve 413 is moved down by the downward active force of force-application block 436, since the upper surface of 413 stress of guide sleeve is one Inclined-plane, force-application block 436 are moved down along inclined-plane, and spill spin block 434 is rotated with the movement of force-application block 436 to side, when force-application block 436 Slip away inclined-plane when, guide sleeve 413 no longer by downward active force, gos up, with guide sleeve under the action of reset spring 410 413 rise, guide sleeve 413 drive threading axis 411 to be lifted upwards, and guide pin 412 is moved along 414 opposite direction of guide groove, so that The rotation of 411 opposite direction of axis is threaded, and then drives the opposite direction rotation of the first rotating bar 421, the first rotating bar 421 drives second turn Lever 422, third rotating bar 423 rotate so that the second rotating bar 422, third rotating bar 423 drive under, connecting crank 11,21 opposite direction of coil holder rotates, and threading hook for running stitch 3 is pierced by pin hole under the rotation of 11 opposite direction of connecting crank.Then with threading axis 411 move up, and hanging wire portion 1, crimping 2, threading hook for running stitch 3 move up.Since threading axis 411 passes through in fixed plate 8 Through-hole 81 is connected with the first rotating bar 421, and the moving up of the first rotating bar 421 will drive fixed plate 8 and move up, and then drives fixing axle 418 move up.After moving up certain altitude, the top of threading axis 411 is contacted with spacer pin 417, so that in the threading stopping of axis 411 It moves.The driving force downward to button 431 is eliminated, button 431 resets, and spill spin block 434, force-application block 436 also reset.
As shown in Figure 4-Figure 6, driving mechanism 4 is arranged on support frame 611.The upper end of guiding axis 437 is fixedly connected on branch On support 611, lower end is fixed on support frame 611 by positioning step 438.Fixing sleeve 419 is also set in the outer of threading axis 411 It encloses.Support plate 611 is fixedly connected on the head 612 of sewing machine, and with its positioning, is arranged between support plate 611 and head 612 There is a panel pad 613, it is grease proofing to have the function that.The fourth connecting shaft 94 is fixedly connected in fixed plate 8, to keep threading mechanism Stability when being rotated.
As shown in Figure 7, Figure 8, driving mechanism 4 further includes a swing rod 441, drive shaft 442, automated drive 443, swing rod 441 are connected on the casing 614 of sewing machine and its both ends can be rotated around rotation axis 444 by a rotation axis 444, swing rod 441 One end is connected with button 431, and the other end is hinged on the lower end of drive shaft 442, the upper end of drive shaft 442 and automated drive 443 are connected, and drive shaft 442 can move up and down under the driving of automated drive 443.One end of swing rod 441 is provided with jack 445, one end of pin 446 is inserted into jack 445, and the other end is fixedly connected with button 431, and drive shaft 442 can be in automated drive It is moved up and down under 443 driving, moving up and down for drive shaft 442 drives swing rod 441 to swing up and down, and then drives on button 431 Lower movement.Automated drive 443 is mounted on casing 614, and automated drive 443 can be electromagnet or gas with driving function Cylinder, to realize the automation of driving mechanism.Automated drive 443 is electrically connected with a controller 615, and controller 615 is for controlling The driving of automated drive is additionally provided with controller panel 616 as shown in Figure 9 and instructs for input control, and passes through controller 615 realize the automatic control to driving mechanism.It is additionally provided with thread cutter 617 as Figure 7-9, for adjusting before self-threading The length of line.
Threading process are as follows: pass suture through hanging wire and hook 12 the second clamps for hanging over the first clamp slot 211 of coil holder 21, clamping plate In slot 221, give button 431 1 downward driving forces, button 431 drives button set 432, connecting pin 433, spill spin block 434, rotation Switch block torsional spring 435, force-application block 436 move down, and force-application block 436 is under the downward driving of button 431, to 413 upper end of guide sleeve Inclined-plane force, and moved down along inclined-plane, spill spin block 434 is rotated with the movement of force-application block 436 to side, guide sleeve 413 by The downward active force of force-application block 436 and move down, while drive threading axis 411 move down, threading axis 411 move down meeting Fixed plate 8 is driven to move down, since the bottom end of fixing axle 418 is fixed in fixed plate 8, fixing axle 418 can be in fixed plate 8 It moves down under drive, is contacted when being moved to outside in locating piece 415 of 413 sets of guide sleeve, guide pin 412 with locating piece 415 When, threading hook for running stitch 3 is consistent with the height of the pin hole of sewing needle 5, during guide sleeve 413 continues to move down, guide pin 412 Start to move along guide groove 414, so that threading axis 411 rotates, drives the rotation of the first rotating bar 421,421 band of the first rotating bar Dynamic second rotating bar 422, third rotating bar 423 rotate so that the second rotating bar 422, third rotating bar 423 drive under, Connecting crank 11, coil holder 21 are rotated in the opposite direction centered on the fourth connecting shaft 94, when rotation, the second rotating bar 422 with The separation of 22 phase of clamping plate, under the pulling force effect of clamp tension spring 23, clamping plate 22 is rotated around riveting position, the second clamp slot 221 and the One clamp slot 211 is not overlapped, and is jammed so that being located at the second clamp slot 221 with the suture in the first clamp slot 211, and with Connecting crank 11, the rotation of coil holder 21 round about, the suture positioned at hanging wire hook 12 and the first clamp slot 211 are tightened up, Also, threading hook for running stitch 3 hang over the suture being tightened up just can with the pin hole for being rotated into sewing needle 5 of connecting crank 11 to wear On line hook 3.When force-application block 436 slips away the inclined-plane of 413 upper end of guide sleeve, guide sleeve 413 is no longer by downward active force, multiple Go up under the action of the spring 410 of position, with the rise of guide sleeve 413, guide sleeve 413 drives threading axis 411 to be lifted upwards, guiding Pin 412 is moved along 414 opposite direction of guide groove, so that threading 411 opposite direction of axis rotation, and then drive the anti-of the first rotating bar 421 Direction rotates, and the first rotating bar 421 drives the second rotating bar 422, third rotating bar 423 to rotate, so that in the second rotating bar 422, under the drive of third rotating bar 423, connecting crank 11, the rotation of 21 opposite direction of coil holder, threading hook for running stitch 3 is in 11 negative side of connecting crank To rotation under be pierced by pin hole.Then moving up with threading axis 411, hanging wire portion 1, crimping 2, threading hook for running stitch 3 are upwards It is mobile.It is connected since threading axis 411 passes through the through-hole 81 in fixed plate 8 with the first rotating bar 421, threading axis 411, first rotates The moving up of bar 421 will drive fixed plate 8 and move up, and then drive moving up for fixing axle 418.After moving up certain altitude, axis 411 is threaded Top contacted with spacer pin 417 so that threading axis 411 stopping move up.After eliminating the driving force downward to button 431, button 431 reset, and spill spin block 434, force-application block 436 also reset.
Embodiment two:
As shown in Figure 10, on the basis of aforementioned embodiments one, the second rotating bar 422, third rotating bar 423 are changed into Driving gear 424, driven gear 425, the lower end of threading axis 411 are connected with the driving tooth rotated with the rotation of threading axis 411 Wheel 424, driving gear 424 is meshed with a driven gear 425, and crimping 2 is fixedly connected on driving gear 424, hanging wire portion 1 Be fixedly connected on driven gear 425, crimping 2, hanging wire portion 1 respectively driving gear 424, driven gear 425 drive under It rotates in the opposite direction.Crimping 2 includes a coil holder 21, is provided with the first clamp slot 211 on coil holder 21.Other parts with Embodiment one is identical.
Threading process are as follows: pass suture through hanging wire hook 12 and hang in the first clamp slot 211 of coil holder 21, give button 431 1 A downward driving force, button 431 drive button to cover 432, connecting pin 433, spill spin block 434, spill spin block torsional spring 435, force-application block 436 move down, and force-application block 436 exerts a force, and along inclined-plane under the downward driving of button 431 to the inclined-plane of 413 upper end of guide sleeve It moves down, spill spin block 434 is rotated with the movement of force-application block 436 to side, the effect downward by force-application block 436 of guide sleeve 413 Power and move down, while threading axis 411 being driven to move down, threading axis 411, which moves down, will drive fixed plate 8 to moving down Dynamic, since the bottom end of fixing axle 418 is fixed in fixed plate 8, fixing axle 418 can move down under the drive of fixed plate 8, when 413 sets of guide sleeve are moved to when the outside of locating piece 415, guide pin 412 and locating piece 415 contact, threading hook for running stitch 3 and sewing needle The height of 5 pin hole is consistent, and during guide sleeve 413 continues to move down, guide pin 412 starts along guide groove 414 It is mobile, so that threading axis 411 rotates, driving gear 424 is driven to rotate, driving gear 424 drives driven gear 425 to rotate, and makes Driving gear 424, driven gear 425 drive under, coil holder 21, connecting crank 11 rotate in the opposite direction, and with Connecting crank 11, the rotation of coil holder 21 round about, positioned at hanging wire hook 12 and first the suture of clamp slot 211 drawn Tightly, also, threading hook for running stitch 3 makes the suture being tightened up just with the pin hole for being rotated into sewing needle 5 of connecting crank 11 to hang On threading hook for running stitch 3.When force-application block 436 slips away the inclined-plane of 413 upper end of guide sleeve, guide sleeve 413 no longer by downward active force, Go up under the action of reset spring 410, with the rise of guide sleeve 413, guide sleeve 413 drives threading axis 411 to be lifted upwards, Guide pin 412 is moved along 414 opposite direction of guide groove, so that threading 411 opposite direction of axis rotation, and then drive driving gear 424 Opposite direction rotation, driving gear 424 drives driven gear 425 to rotate, so that in the drive of driving gear 424, driven gear 425 Under, coil holder 21, the rotation of 11 opposite direction of connecting crank, threading hook for running stitch 3 are pierced by pin hole under the rotation of 11 opposite direction of connecting crank.Then With moving up for threading axis 411, hanging wire portion 1, crimping 2, threading hook for running stitch 3 are moved up.Since threading axis 411 passes through admittedly Through-hole 81 on fixed board 8 is connected with driving gear 424, and threading axis 411, moving up for driving gear 424 will drive in fixed plate 8 It moves, and then drives moving up for fixing axle 418.After moving up certain altitude, the top of threading axis 411 is contacted with spacer pin 417, so that The threading stopping of axis 411 moves up.After eliminating the driving force downward to button 431, button 431 resets, spill spin block 434, force-application block 436 Also it resets.
In conclusion the present invention can be used on industrial flat bed sewing machine, and can be to avoid manually to pin hole, increase work effect Rate, it is bigger for dysphotia person and new hand's effect, it is able to achieve single driving and completes mechanism decline, rotate, threading, go up etc. Function, it is simpler convenient to operate, and will not generate interference to existing work in operation, and installing and dismounting is simple.
So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as At all equivalent modifications or change, should be covered by the claims of the present invention.

Claims (8)

1. a kind of automatic threading device of sewing machine, which is characterized in that the automatic threading device includes at least:
Hanging wire portion (1) for hanging line, and can be rotated;
Crimping (2), for clamping a part for hanging on the line of the hanging wire portion (1), and can the relatively described hanging wire portion (1) it is anti- The rotation in direction;
Threading hook for running stitch (3) is connected to the hanging wire portion (1), and the pin hole of sewing needle (5) can be pierced into the rotation of the hanging wire portion (1) And catch on the line being connected between the hanging wire portion (1) and the crimping (2) and rotating backward with hanging wire portion (1) The pin hole of sewing needle (5) is pierced by go out the tape caught on;
Driving mechanism (4), for driving the relative rotation of the hanging wire portion (1) and the crimping (2), the driving mechanism (4) include threading axis (411), the hanging wire portion (1), crimping (2), threading hook for running stitch (3) can be driven to move up and down, and work as the extension Line portion (1) is rotated when dropping to the consistent position of height of the threading hook for running stitch (3) and the pin hole of sewing needle (5);
The lower end of threading axis (411) is connected with the first rotating bar rotated with the rotation of threading axis (411) (421), one end of first rotating bar (421) is hinged with second rotated with the rotation of first rotating bar (421) It cuts with scissors one end of rotating bar (422), third rotating bar (423), one end of second rotating bar (422) and the hanging wire portion (1) It connects, one end of the third rotating bar (423) and one end of the crimping (2) are hinged, the hanging wire portion (1), crimping (2) Respectively second rotating bar (422), third rotating bar (423) drive under rotate in the opposite direction, the hanging wire portion (1) the other end and the other end of the crimping (2) are hinged;Alternatively, the lower end of threading axis (411) is connected with institute The driving gear (424) stating the rotation of threading axis (411) and rotating, the driving gear (424) and a driven gear (425) phase Engagement, the crimping (2) is fixedly connected on the driving gear (424), the hanging wire portion (1) be fixedly connected on it is described from On moving gear (425), the hanging wire portion (1), crimping (2) are respectively in the driven gear (425), driving gear (424) It is rotated in the opposite direction under drive.
2. the automatic threading device of sewing machine according to claim 1, it is characterised in that: threading axis (411) upper end It is fixedly connected with a guide pin (412), periphery is arranged with a guide sleeve (413), and one is provided on the guide sleeve (413) tiltedly To the guide groove (414) of extension, the guide pin (412) is stuck in the guide groove (414), and can be along the guide groove (414) mobile, the periphery of described threading axis (411) lower end is additionally provided with a positioning block (415), and the locating piece (415) is fixed On a support frame (611), the guide sleeve (413) can be covered when moving down in the outside of the locating piece (415), described to lead Guide sleeve pressure spring (416) are additionally provided on the inside of to set (413).
3. the automatic threading device of sewing machine according to claim 2, it is characterised in that: described to thread the upper of axis (411) Side is provided with spacer pin (417).
4. the automatic threading device of sewing machine according to claim 3, it is characterised in that: the driving mechanism (4) is also wrapped It includes a fixing axle (418), the guide sleeve (413) is also set in the upper end periphery of the fixing axle (418), the fixing axle (418) periphery of lower end is provided with a fixing sleeve (419), and the fixing sleeve (419) is fixed on support frame as described above (611), It is also arranged in fixing axle (418) reset spring (410), and the reset spring (410) is resisted against the guide sleeve (413) between the fixing sleeve (419), the bottom end of the fixing axle (418) is fixedly connected on a fixed plate (8), described It is additionally provided in fixed plate (8) through-hole (81), the lower end of threading axis (411) passes through the through-hole (81), and described wears Spool (411) is located at the aperture that the diameter in the through-hole (81) is less than the through-hole (81), and the aperture of the through-hole (81) is small It is located at the diameter of the through-hole (81) external upper in threading axis (411).
5. the automatic threading device of sewing machine according to claim 4, it is characterised in that: the driving mechanism (4) is also wrapped Button (431), button set (432), connecting pin (433), spill spin block (434), spill spin block torsional spring (435), force-application block (436) are included, The button (431) is connect by the button set (432) with the connecting pin (433), the connecting pin (433) and the rotation Switch block (434) connection, the spill spin block torsional spring (435) are set on the connecting pin (433), and both ends are born against described On button set (432) and the spill spin block (434), the force-application block (436) is fixedly connected on the upper of the spill spin block (434) End, the upper surface that the guide sleeve (413) is set in the part on the fixing axle (418) is an inclined-plane, the force-application block (436) under the downward driving of the button (431), the inclined-plane of Xiang Suoshu guide sleeve (413) upper end exerts a force, and downward along inclined-plane It is mobile.
6. the automatic threading device of sewing machine according to claim 5, it is characterised in that: the button set (432) is arranged In the outside of a guiding axis (437), and can be moved up and down along the guiding axis (437).
7. the automatic threading device of sewing machine according to claim 6, it is characterised in that: the driving mechanism (4) is also wrapped A swing rod (441), drive shaft (442), automated drive (443) are included, the swing rod (441) is connected by a rotation axis (444) On the casing (614) of sewing machine and its both ends can be rotated around the rotation axis (444), one end of the swing rod (441) and institute It states button (431) to be connected, the other end is hinged on the lower end of the drive shaft (442), the upper end of the drive shaft (442) and institute Automated drive (443) is stated to be connected, the drive shaft (442) can under the driving of the automated drive (443) on move down It is dynamic.
8. the automatic threading device of sewing machine according to claim 7, it is characterised in that: the automated drive (443) For electromagnet or cylinder.
CN201610770924.9A 2016-08-30 2016-08-30 A kind of automatic threading device of sewing machine Active CN106245249B (en)

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CN111575931B (en) * 2020-05-26 2021-08-13 台州学院 Thread clamping structure in automatic threading device of industrial sewing machine

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CN1478938A (en) * 2002-06-25 2004-03-03 爱信精机株式会社 Sewing machine

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