CN1693572B

CN1693572B - Shuttle embroidery machine

Info

Publication number: CN1693572B
Application number: CN200510067795.9A
Authority: CN
Inventors: F·拉泽
Original assignee: Laesser AG
Current assignee: Laesser AG
Priority date: 2004-04-29
Filing date: 2005-04-29
Publication date: 2012-03-21
Anticipated expiration: 2025-04-29
Also published as: KR101149386B1; DE502004000633D1; KR20060047617A; EP1595990A1; EP1595990B1; ATE327362T1; CN1693567A

Abstract

The invention relates to an embroidery machine with a gear (21) for moving a shuttle (24) back and forth. A driving beam (25) of the gear is provided with a lower pusher (28) and an upper pusher (29) to every shuttle (24). The driving beam (25) is guided by a guide level (26) mutually arranged at interval and sliding in a guiding element (27). A driving device (23) is provided with a plurality of winch driving mechanisms (30) which are connected with the guide level (26) or connected with the driving beam (25) against the guide level and driving through a common crank shaft (31). The force transmits from the crank shaft (31) to a connecting bar (35), from the connecting bar (35) to an oscillating rod (37) and from the oscillating rod to the gear through a tension rod (39). The embroidery machine needs neither expensive disc-shaped cam, long tension rod nor a swing axle causing vibration problem for the up and down, back and forth movement of the shuttle. The driving of the shuttle is basically with no clearance, ensuring stable operation even at high speed of embroidery.

Description

Shuttle embroidery machine

Technical field

The present invention relates to a kind of shuttle embroidery machine, it has one and is used to make the transmission crossbeam of shuttle associated movement and has a driving shaft that is used for the transmission crossbeam.

Background technology

Shuttle embroidery machine that is to say a needle thread and a shuttle yarn according to two-wire system work, and wherein needle thread all uses the shuttle yarn to weave when each needle tracking.The pin that front is provided with a pinprick transports needle thread and passes the rear side that cloth is expected cloth, and yarn just forms a looped pile when pin is return.Make shuttle pass this looped pile then, in this shuttle, include the shuttle yarn.A shuttle embroidery machine includes the needlework location of many one-tenth one arranged and many pins and shuttle is correspondingly arranged with it.The transmission crossbeam is used to make shuttle to realize moving back and forth.Novel machine more, for example they have a transmission crossbeam in that kind that EP-A-0638681 has been described, and it is processed by a kind of hollow material.All be provided with one for each shuttle and promote down nail and go up and promote to follow closely with one, shuttle just is located between them.Promoting nail with these just makes shuttle in the race of so-called , move up and down.

The speed of shuttle embroidery machine work in recent years constantly improves.Also before few of year, 185 pins concerning big machine/minute, 250 pins concerning small machine/minute be the upper limit, then strive for now 600 pins/minute and higher.But different factors has restricted the significantly raising of machine rotational speed.Increasing quality has caused undesirable vibration and machine parts is damaged rapidly.

For the quality that reduces to move also can realize high rotational speed, EP-A-1055761 suggestion: make the transmission crossbeam with a kind of aluminium section bar.This section bar has many holes, and the promotion nail that is made of plastics just inserts in these holes.Therefore created a kind of transmission device with less relatively quality together with other advantage, this can make rotating speed bring up to 600 rev/mins.

The shuttle-type embroidery machine has been provided with a kind of rotary hook drive device in decades in the past; As it at (works of Shu Naer/Fu Laer) " embroidery technique; manual embroidery with machine used professional book "; Leipzig; That kind described in 1982,56,57 pages.

The Fig. 1 that is quoted in the works has represented this rotary hook drive device.Cam 1 comprises two parts.Two guide wheels 2 are fixedly connected and when cam rotation, make this slide bar to move up and down with slide bar.4 make shuttle changement 5 get into oscillating motions from pinning.The shuttle axle moves along it outside the main wall before machine, and its task is the back side that this motion is delivered to machine.Favour the back side of machine or shuttle pull bar that the shuttle face passes 6 drives elbow shaped rods 7 through this.Moving up and down that elbow shaped rod 7 will tilt is transformed into a kind of horizontal movement of pushing drawing rod 8.On this pull bar 8, hinge 9 is housed, they have caused moving up and down of guide post 10.Below these guide posts with above all be fixed with transmission crossbeam 11,11 '.Arranged that on the transmission crossbeam upper and lower pusher (not shown) is used for the shuttle that many spaces are arranged.Be that catch bar 8 or transmission crossbeam all are arranged on the length of machine.The task of spring 12 is to support lifting of shuttle (not shown).Spring 12 is tensioned when moving downward, and when moving upward, unclamps.For the spring that overcomes slide bar weight 13 also is like this.Drive unit more complicated and correspondingly expense is higher when making and safeguarding.But turn out to be and disadvantageously especially be: when very big vibration has just appearred during greater than 120 rev/mins in rotating speed.

Commercial existing newer embroidery machine has a rotary hook drive device; Wherein have a driving shaft in the back of machine or the shuttle side be parallel to the transmission crossbeam and arrange and have the cam that is spaced from each other and arranges, be used for making a swinging axle swing that is parallel to driving shaft through roller rod.Swinging axle has the lever that spacing is arranged each other, and they are hinged on the transmission crossbeam through bar, so that move up and down at shuttle.

When embroidery speed be approximately 600 pins/minute the time have a shuttle the transmission crossbeam just quicken with about 20g.Because the transmission crossbeam must design gentlyer relatively, so that the quality that institute will quicken keeps is less, this is dangerous below just existing: if the bar of its motion is not arranged in relatively on the spacing than weak point each other, it just deforms so.Therefore be provided with than the valuable cam disc that exists and Duo one times lever and bar at least.When embroidery speed be 600 pins/minute the time swinging axle per second is swung back and forth for ten times.Reversed swinging axle this moment, and possibly produce resonance, and this resonance produces interference effect to the operation of embroidery machine.Therefore on up-to-the-minute machine, make the size of this swinging axle very big, even but when diameter is 40 millimeters, also noisy vibration possibly occur.

The GB800240 that announced in 1958 has described a kind of Sewing machines, and it is used in little spacing, producing the seam that is parallel to each other with many pins and shuttle, if cloth is point-blank through this machine (Fig. 4, claim 1).So the problem that this patent will solve is nonsensical on shuttle embroidery machine, and that is to say: the spacing between parallel seam has limited the size of available shuttle.Even the structure of described Sewing machines is also different greatly with shuttle embroidery machine.That is to say for described Sewing machines different with general embroidery machine is divided into two row with pin on the cloth charge level.Sewing machines does not have the transmission crossbeam of the shuttle that is arranged in point-blank on the machine length and is driven by pusher.Shuttle becomes two row to arrange to be positioned in the driving or rather in retainer, and this driving moves back and forth through a crank.Crank is articulated in a lever through a toggle-action lever.It is hinged on this lever on the elbow shaped rod through a connecting rod, and this elbow shaped rod acts on the sliding bar of driving, so that this sliding bar moves back and forth with shuttle.Patent can not be known thus: if concerning embroidery machine, can avoid because the resonance that produces through reversing of swinging axle.

The Sch that quotes in front ner; In 99 pages to 101 pages of the works of Freier " embroidery technique " a kind of plane embroidery machine with 504 pins has been described; In this machine; Different with the big embroidery machine of common usefulness; Pin and to also have shuttle be not to be arranged on the machine length point-blank, but plane earth is distributed in the whole embroidery district.Maximum embroidery speed be 180 pins/minute, at CH660608 in 1987 and corresponding US4,627,368 li a kind of drive unit has been described, it designs by the single driving shuttle.As usually in the embroidery machine of plane, CH660608 has represented adjoining zone, and wherein shuttle is repeatedly put up and down spaced reciprocally and on the shuttle track of level, moved.Each shuttle all is provided with a drive unit, and it comprises the connecting rod of an arranged off-centre on driving shaft.This connecting rod drives a toothed timing belt that on this, passes through through an axle that has the gear of driving, and this belt has a driving lever, and it moves back and forth the pusher clutch.The pusher motion that this clutch is used shuttle.

The shuttle of this pattern drives in practice through test.Because the gap and the clutch at odontoid belt transmission and driving lever place, so transmission turns out to be also inaccurate.Same cost also is disadvantageous, because to each needlework location, perhaps when using a kind of odontoid belt of broad, all is provided with a drive unit (the 4th page, right hurdle, 60 to 64 row) for two or more needlework location.Therefore also at the Sch that quotes

ner; In the works of Freier; The 100th page of economic rationality of just the plane embroidery machine with independent shuttle driving being compared with common embroidery machine proposed query, and the latter then is confirmed in practice.Because this negative described patent of assessment of academia just can not solve the problem that beginning is mentioned.Because this patent has shown the single driving of the shuttle of a needlework location, so its continues to draw away thus, uses a transmission crossbeam and is used for all shuttles of driven in common.

Summary of the invention

Task of the present invention is to propose a kind of embroidery machine, and it has a transmission crossbeam or like to be used to make shuttle to move together, and a driving shaft that is used for the transmission crossbeam is arranged, and its manufacturing expense is cheap and allow than higher embroidery speed was arranged in the past.

Be characterised in that according to embroidery machine of the present invention driving shaft is connected with the transmission crossbeam through a plurality of crank driving mechanisms of arranging that are spaced from each other.Inexpensive when comparing the crank mechanism manufacturing with the cam disc transmission mechanism.All essential swinging axle before this just allows to abandon, and can with short spacing these crank mechanisms be set with relatively low cost, be used to make the transmission crossbeam to move back and forth.Thereby avoided objectionable distortion of transmission crossbeam when height embroidery speed.Because no longer needed swinging axle, therefore being contained in reversing with vibration problem in this swinging axle has not had yet.This just can make embroidery speed improve.Also friction is also less with few noise and wearing and tearing more in the operation of comparing crank mechanism with the cam disc transmission mechanism.Owing to removed swinging axle and also saved weight, can reach the order of magnitude of hundreds of thousand.

The transmission crossbeam generally is provided with guide post, and they can move around in static guide.A kind of favourable form of implementation regulation of the present invention: corresponding crank mechanism is connected on such guide post or nestles up this guide post and is connected on the transmission crossbeam.Therefore when moving back and forth, just avoided causing the distortion of transmission crossbeam owing to the moving-mass of guide post.

Advantageously corresponding crank mechanism all includes one and is hinged on the connecting rod on the crank axle, a swing arm and a pull bar, and wherein rod hinge connection is on fork, and fork is hinged on the pull bar, and pull bar is hinged on the transmission device.Directly be hinged on the transmission device differently with a connecting rod, can make motion of shuttle realize a kind of curve shape, the curve shape of realizing with cam disc before it corresponds essentially to through the corresponding layout and the size design of said part.Through Realization by Machine being moved relatively stably to corresponding optimization of curve shape.

Advantageously driving shaft is driven at the two ends of driving shaft.So just can reduce reversing of driving shaft.But also can drive this driving shaft, so that reverse less in the centre.

Followingly the present invention is elaborated according to accompanying drawing.

Description of drawings

Fig. 1: a kind of sketch of the known drive unit that is used for transmission device;

Fig. 2: the sketch that is used for a kind of transmission crossbeam of shuttle embroidery machine according to an embodiment of drive unit of the present invention;

Fig. 3: hinged on the transmission crossbeam of shuttle embroidery machine of a kind of form of implementation of crank driving mechanism and other;

The side view of the crank driving mechanism of Fig. 4: Fig. 3 and transmission crossbeam;

Fig. 5 a: sketch of crank driving mechanism shown in Figure 4 and transmission crossbeam;

Fig. 6: the motion of shuttle curve that can use this drive unit to realize.

The specific embodiment

The prior art that belongs to shown in Figure 1, the drive unit that is used for a kind of transmission device of shuttle embroidery machine introduced in beginning.

Fig. 2 to 4 had both expressed transmission device 21, had also represented to be used for the drive unit 23 of this transmission device 21.Transmission device 21 mainly includes transmission crossbeam 25, and it is directed to bar 26 and supports.Guide post 26 is bearing in 27 li of the guides of frame.As shown in Figure 3, following pusher 28 is bearing in 25 li on transmission crossbeam movably with last pusher 29, as this at EP1, that kind of 055,761 li detailed description.Pusher 28,29 pumps shuttle 24.

Drive unit has a plurality of crank driving mechanisms 30.In Fig. 3, only represented one of them crank mechanism 30.All crank mechanisms 30 are all driven by a common bent axle 31.Bent axle 31 is bearing in the frame.Each crank mechanism 30 has a connecting rod 35 that is hinged on the bent axle 31.Connecting rod 35 is hinged on the fork 37, and fork 37 is hinged on the pull bar 39, and pull bar 39 then is hinged on the transmission device 21.The bearing 41 of fork 37 is arranged on the frame.

As shown in Figure 3, corresponding guide post 26 is arranged to favour 15 ° of vertical lines corresponding to the inclination of shuttle track.Thereby pull bar 39 is hinged on this transmission device 21, thereby axle 43 can be moved axially with respect to the dead eye 45 of guide post 39.

Fig. 6 has represented the stroke of shuttle when bent axle 31 rotations, in millimeter.

Sum up to get up can affirm following content:

Embroidery machine has a transmission device 21 and is used to make shuttle 24 to realize moving back and forth, and the transmission crossbeam 25 of transmission device all has a following pusher 28 and a last pusher 29 for each shuttle 24.That transmission crossbeam 25 is arranged by the space, come guide at the guide post 26 of 27 li slips of guide.Drive unit 23 has many crank driving mechanisms 30, and they are connected on the guide post 26 or nestle up guide post and are connected on the transmission crossbeam 25 and can drive through a public bent axle 31.Power passes to connecting rod 35 from bent axle 31, from connecting rod 35 to fork 37 and pass on the transmission device 21 through pull bar 39 from this fork.Embroidery machine no longer needs valuable cam disc and long bar for pumping of shuttle, also need not cause the swinging axle of vibration problem.Even the shuttle driving is gapless basically and when high embroidery speed, also allows and can move reposefully.

Claims

1. shuttle embroidery machine; Having one has the transmission device (21) of the transmission crossbeam (25) that is used to make the shuttle associated movement and has a driving shaft (31) that is used for transmission crossbeam (25); It is characterized in that the crank driving mechanism (30) that driving shaft (31) is arranged through a plurality of spaces is connected with transmission crossbeam (25).

2. by the described shuttle embroidery machine of claim 1; It is characterized in that; Transmission crossbeam (25) has a plurality of guide posts (26); They can move around in static guide (27) lining, and wherein crank driving mechanism (30) is connected on the corresponding guide post (26) or is being connected near the guide post on the transmission crossbeam (25).

3. by claim 1 or 2 described shuttle embroidery machines; It is characterized in that; Crank driving mechanism (30) includes the connecting rod (35), a fork (37) and the pull bar that are hinged on the driving shaft (31); Wherein connecting rod (35) is hinged on the fork (37), and fork (37) is hinged on the pull bar (39), and pull bar (39) is hinged on the transmission device (21).

4. by the described shuttle embroidery machine of claim 1, it is characterized in that, realize the driving of driving shaft (31) at the two ends of driving shaft (31).

5. by the described shuttle embroidery machine of claim 1, it is characterized in that, realize the driving of driving shaft (31) in the central authorities of driving shaft (31).