CN1424452A - Feeder of sewing machine - Google Patents
Feeder of sewing machine Download PDFInfo
- Publication number
- CN1424452A CN1424452A CN 02154782 CN02154782A CN1424452A CN 1424452 A CN1424452 A CN 1424452A CN 02154782 CN02154782 CN 02154782 CN 02154782 A CN02154782 A CN 02154782A CN 1424452 A CN1424452 A CN 1424452A
- Authority
- CN
- China
- Prior art keywords
- pulling roll
- sewing machines
- sewing
- belt wheel
- pay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/10—Work-feeding means with rotary circular feed members
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/10—Work-feeding means with rotary circular feed members
- D05B27/14—Work-feeding means with rotary circular feed members rotating discontinuously
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to a material feed device of sewing machines, including a material feed mechanism designed as an upper belt feeding means (10). A conveyor belt (13) is guided by a front driven reel (11) and a rear freely rotatable reel (12) connecting with a take-off roller (31) disposed after a needle (2), in the material feeding direction. The take-off roller (31) has diameter slightly larger than that of the rear reel (12). According to the manner, the take-off roller (31) gives the feed amount larger than that of the belt feeding means (10), thereby, tensioning force of sewing is generated in a seam area to prevent seam pleat.
Description
Technical field
The present invention relates to a kind of Sewing machines pay-off.
Background technology
By the known a kind of pay-off that comprises the material guide plate that is used for Sewing machines of DE2927869C2, it has a pulling roll that is arranged on material guide plate back.This pulling roll drives in this manner by stepping motor, and the feed when promptly being fed forward is greater than the feed of material guide plate.Reach thus, sewing piece maintains tensile stress always and prevent the linear slit rivel in this way under the effect of yarn tension along forward feed direction when sending to.The driver of step motor that is used for pulling roll comprises that an impulse generator, can manually be used for the adjusting device and a needle position sensor of umber of pulse, and this needle position sensor realizes being used for the synchronization of pulling roll and material guide plate and the function of phase locked impulser.Except that in order to drive and to control pulling roll and need spend the relative high technical fee, other shortcomings are that also promptly when changing the feed of material guide plate by means of the adjusting device that is used for umber of pulse, the feed of pulling roll also must be mated at every turn.
Above-mentioned shortcoming is for also being set up in principle by the known pay-off of DE3344761C1, and this pay-off is made of a conveyer belt that guides on presser feet.This conveyer belt is by driving wheel running, and this driving wheel is made of two adjustable frustum-like shape halfbodies of its phase mutual edge distance and a plurality of bow-shaped section that is supported on above them.In this device, regulate the feed that changes and bother especially,, follow mobile vertically driving wheel halfbody and and then fastening nut because will unclamp nut earlier for this reason.
Known a kind of pay-off from DE3210997C2, wherein for rotatable feed mechanism selectively carry the stepping finder that is designed to free pulley be provided with two reversed arrangement forward or backward, this stepping finder is alternately connected feed mechanism.Feed mechanism or can be the coefficient feed wheel of the roller press with rotating freely in the bottom, perhaps can be supported on the presser feet with the coefficient band conveyor of material guide plate.In the embodiment of these two kinds of pay-offs, all there is not additional pulling roll to be configured in the corresponding feed mechanism.
Summary of the invention
Purpose of the present invention just provides a kind of by a pay-off of forming with the faster pulling roll of a superincumbent feed mechanism and additional running below, and the drive unit that wherein is used for pulling roll designs simplyr.This purpose reaches by the described feature of claim 1.
The present invention is mainly based on this thought, be pulling roll with at least two feed mechanisms in one synchronization and Phase synchronization realize by the belt transfer element, need not directly be matched with the corresponding feed of two feed mechanisms whereby by means of the feed that can make pulling roll once electronic circuit with impulser.By the guide wheel diameter greater than pulley diameters in the back, reach desirable bigger pulling roll feed when the same rotational speed of two running rollers by simple especially mode, this bigger feed causes the tensile force of sewing piece, and resists the linear slit rivel in this way.
Pass through further step, the transfer element that is about to belt is designed to band conveyor, also obtain the advantage that band conveyor drives with respect to roller press in addition, the masterpiece that promptly only produces uniformly the subsection area pressure is used on the sewing piece and the needle tracking formation condition of improving, this needle tracking formation condition realizes that under this condition promptly conveyer belt realizes being used for the large-area substrate hold-down function of sewing piece when the tension yarn connects.
Demonstrate, the torque of being fixed by the different feed of conveyer belt and pulling roll when the belt wheel of back is approximately 7:8 with the diameter proportion relation of pulling roll on the sewing piece of acting on is not discovered and is had anything to interfere, because it can be by operating personnel-he just guided in addition balance of sewing piece-no trouble at all with hand when the sewing originally.
By the known a kind of pay-off that is used for Sewing machines of DE2949146C2, it is included in first pulling roll that the step-by-step movement of material guide plate back drives and second pulling roll of distant location more.Being provided with one between these two pulling roll is used for and will waits to add the seam-ripping pocket knife of the band that is sewn on the sewing piece.Drive second pulling roll like this by means of crank driving mechanism and one-way clutch, make it carry out work with the feed bigger than first pulling roll.In order to remove rivel and fine wrinkle before cutting off, second pulling roll that is called draw roll in this way adds stretching action to the band application that is added seam.
So-called compensating roller is fixed on the axle of supporting second pulling roll, and this compensating roller has with respect to the bigger diameter of adjacent pulling roll and by the spoke that uses elastically deformable and can flexibly move perpendicular to the sewing piece plane.Select bigger diameter to be because compensating roller should than second pulling roll contact individual layer and thereby more smooth sewing piece part.Though because bigger diameter compensating roller applies than the big feed of the second pulling roll feed, this bigger feed is not to be used for additionally stretching sewing piece, but is used to apply calibrated torque.
By being arranged on according to described further formation band conveyor of claim 2 and pulling roll on the axle that is installed in the Sewing machines head, this is consistent with the compressor arm of traditional Sewing machines basically according to position and function.Be installed on the Sewing machines with can saving the space and also replenish in case of necessity by this measure band conveyor and pulling roll and be installed on the more old-fashioned machine that disposes the roller press drive unit as auxiliary equipment.
According to claim 3, on the one hand belt wheel axis in front be in tilted layout and be used as on the other hand directive wheel the belt wheel axis of back and being in tilted layout of pulling roll axis make it possible to, belt wheel that on the one hand will be in front and the especially closely close pin of belt conveyor thus, and simplified the structure of directive wheel and pulling roll on the other hand, wherein obtain the bigger diameter of wishing separately for the latter by being arranged in juxtaposition by directive wheel and pulling roll.
By requiring the 4 measure pulling roll that provide not is the whole width of contact sewing piece, but direct targetedly contact has formed the zone of linear slit, should right over there resist the rivel that may form.
Claim 5 and 6 has provided favourable structural further formation.
Make in the measure described in the claim 7, not only directive wheel but also pulling roll all by the time can flexibly get out of the way the sewing piece thickening.
According to claim 8, directive wheel and pulling roll are bearing on the cam pin and make it possible to, for change or the tensioning conveyer belt and change in front the belt wheel axis and the distance between the axis of directive wheel and pulling roll.
That propose a kind of compact conformation by claim 9 and thereby the structure that can largely use uninterruptedly.
Because when sewing backward the bigger feed of pulling roll in sewing piece, will cause the linear slit linearity region gather or rivel forms, can-if necessary-offset the send effect of sending effect and pulling roll of band conveyor in the directive wheel zone by high speed swinging according to the rocking bar of described supporting directive wheel of claim 10 and pulling roll.
Description of drawings
Set forth the present invention by means of embodiment illustrated in the accompanying drawings.In the accompanying drawing:
Fig. 1 has the part side view of the Sewing machines of pay-off;
Fig. 2 is along the cutaway view of the pay-off of Fig. 1 center line II-II intercepting;
Fig. 3 is along the directive wheel of Fig. 1 center line III-III intercepting and the cutaway view of pulling roll;
The vertical view of the band conveyor of Fig. 4 pay-off and the biopsy cavity marker devices of pulling roll.
The specific embodiment
The part of pillar 1 and case head 2 only is shown in the Sewing machines shell.The shank 3 that can move up and down is installed in the case head 2 in known manner, and this shank 3 carries the pin 4 of guiding yarn.Represent with N with the needle movement track shown in the chain-dotted line.
But one is installed in the case head 2 with corresponding to same vertical motion of common compressor arm and spring-loading cradling piece 5.The clamp 6 that disposes channled rail 7 is fixed on the cradling piece 5.The dihedral protuberance 8 usefulness bolted of support 9 are on this channled rail 7.
Band conveyor 10 is arranged on the support 9, this band conveyor basically by driven in front belt wheel 11, form at the belt wheel that is used as directive wheel 12 and the conveyer belt 13 of back.
The detailed design of band conveyor 10 is as described below:
One by means of pinching screw 14 (Fig. 4) anti-rotation the axle journal 15 fixed be arranged on the support 9, the axis 16 of this axle journal becomes ground, inclination angle to extend with horizontal plane.Axle journal 15 has a flange 17.Belt wheel 11 in front is bearing on the flange 17 by means of ball bearing 18.Internal end surface at belt wheel 13 is provided with the gear teeth 19.Be engaged with driver pinion 20 on these gear teeth 19, this driver pinion is fixed on the lower end of axle 21.Axle 21 is installed in the tubular supporting mass 22 that is fixed in the support 9.Axle 21 upper end links to each other with stepping motor 24 by a clutch that is not shown specifically 23, and wherein clutch 23 is fixed on the supporting mass 22 and stepping motor 24 is fixed on the shell of clutch 23.
One end of rocking bar 25 is installed on the axle journal 15 swingably.Cam pin 26 is arranged on the other end of rocking bar 25, and this cam pin has the pin section 27 of a crank-like.Its axis 18 with respect to the horizontal plane becomes same inclination angle to extend as the axis 16 of axle journal 15.The position of rotation of cam pin 26 is by pinching screw 29 (Fig. 4) locking.Belt wheel 12 in the back can be installed on the pin section 27 with rotating freely and pass through a circlip 30 axial restraints.Because realize the function of directive wheels being also referred to as directive wheel below it at the belt wheel 12 of back.Belt wheel 11 in front is shaped on the gear teeth with the periphery of directive wheel 12, so conveyer belt 13 is designed to cog belt.Because the conveyer belt 13 that is in tilted layout of axis 16 and 28 has trapezoidal cross section.
Directive wheel 12 is widened and dilated diameter to the end direction of pin section 27.This part forms pulling roll 31, and this pulling roll is owing to rotate with the rotating speed identical with directive wheel with 12 one-tenth whole structures of directive wheel.Pulling roll 31 has a cannelure 32 that O-ring seals 33 is installed therein, and this O-ring seals protrudes the periphery of pulling roll 21 with not half.The minimum point of O-ring seals 33 is positioned at straight line L and goes up (Fig. 4), and this straight line L passes needle movement track N and extends along the direction that is parallel to feed direction V.
Rocking bar 25 has the hole that disposes the part screw thread 34 of a longitudinal register.Insert a spring lever 35 in this hole 34, this spring lever 35 also passes through the narrow transverse holes 36 of fixing axle journal 15 simultaneously.Spring lever 35 be positioned at the screwed hole 37 that darker end penetrates horizontal expansion, clamp (Fig. 4) by means of headless screw 38 there.The other end of spring lever 35 firmly links to each other with the headless screw 39 of a weak point, and it is used on the one hand using spring lever 35 more easily and is used for blind hole 34 on the other hand.
Pillar 1 is provided with a balladeur train 40, and it is driven by a unshowned stepping motor in known manner.The end face of pillar 1 forms sewing piece bearing-surface 41.End face at pillar 1 embeds a stitch plate 42, and it has a needle passageway hole 43.
Fastenings 44 is arranged on the lower end of cradling piece 5.Lever 45 is installed on the fastenings 44 swingably, and this lever transfers to gradually and compresses pin 46.Tension spring 47 is connected the other end of lever 45, and this tension spring hangs over fixedly on the angle steel 48.Can adjust the position that compresses pin like this by means of adjustable alignment pin 49, make it closely be suspended on the top of sewing piece bearing-surface 41.
Stepping motor 24 is off and on according to the stitch length driving belt wheel of adjusting 11 in front when Sewing machines turns round.Balladeur train 40 is also driven by identical mode by stepping motor simultaneously.
The stepping of belt wheel 11 in front rotatablely moves and is delivered on the directive wheel 12 by conveyer belt 13.With the 13A of conveyer belt branch of its underpart be placed on all sidedly on the sewing piece conveyer belt 13 since low compressive load per unit area realize the sewing piece of protective material send to and be satisfied with needle tracking form, this moment, sewing piece was also smooth in the maintenance of needle movement track N back during the last yarn that forms of tension connects.
The stepping that directive wheel 12 sends rotatablely moves because whole structure is also implemented by pulling roll 31.Since the outer radius surface of O-ring seals 33 with respect to around the periphery radius of the conveyer belt 13 of directive wheel 12 runnings bigger be approximately 7: 8 proportionate relationship, apply the feed bigger with the O-ring seals 33 that sewing piece closely contacts than the feed of conveyer belt 13, and produce the sewing piece tensile force in the linear slit zone in this way, resist the linear slit rivel whereby.
Can distinguish independently together with pulling roll 31 and in height adapt to each other sewing piece when thickening belt wheel 11 and directive wheel 12 in front occurring.
The elastic force that is applied on the rocking bar 25 by spring lever 35 can be fit to corresponding sewing piece.Unclamp pinching screw 14 for this purpose, rotate axle journal free to rotate 15 thus clockwise or counterclockwise and reduce or improve the pretension of spring lever 35 whereby, and and then tighten pinching screw 14.
Claims (10)
1. Sewing machines pay-off, comprise the shank that moves up and down (3) that is installed in the pin that is used to guide yarn (4) in the Sewing machines head (2), sewing piece bearing-surface (41), following feed mechanism (40), the top feed mechanism of forming by the band conveyor (10) that is arranged on pin (4) side, the conveyer belt of this band conveyor (10) by at least one in front with a belt wheel (11 in the back, 12) guiding, and be provided with at least one along feeding direction (V) pulling roll (31) additional in pin (4) back, this pulling roll (31) connects with belt wheel (12) driven type ground in the back, and in order to obtain with respect to two feed mechanisms (10,40) feed that feed is bigger and having than the bigger diameter of belt wheel (12) in the back.
2. Sewing machines pay-off according to claim 1, it is characterized in that, belt wheel in front (11) connects with motor (24) driven type ground and both and the belt wheel (12) in the back all are arranged on the support (9), this support (9) is fixed on the spring-loading bar (5) that is installed in highly movably in the Sewing machines head (2), and forms a directive wheel at the belt wheel (12) of back.
3. the Sewing machines pay-off of stating according to claim 2, it is characterized in that, directive wheel (12) and pulling roll (31) are co-located on the axis (28) with respect to sewing piece bearing-surface (41) sloped position, the axis (16) of belt wheel in front (11) extends along identical angle as the axis (28) of directive wheel and pulling roll (12,31), and conveyer belt (13) has trapezoidal cross section, and the outer circumference surface of conveyer belt branch (13A) below extends along the direction that is parallel to sewing piece bearing-surface (41) whereby.
4. according to claim 2 or 3 described Sewing machines pay-offs, it is characterized in that, pulling roll (31) has annular thickening piece (33), and wherein the part that plays the conveying effect at least below is positioned at the zone of the straight line (L) that is parallel to feeding direction (V) extension that passes needle movement track (N).
5. Sewing machines pay-off according to claim 4 is characterized in that, the O-ring seals (33) that annular thickening piece (33) protrudes its periphery by the part in the groove (32) that embeds pulling roll (31) constitutes.
6. according to one of aforesaid right requirement 2 to 5 described Sewing machines pay-off, it is characterized in that directive wheel (12) and pulling roll (31) are designed to one.
7. according to one of aforesaid right requirement 3 to 6 described Sewing machines pay-off, it is characterized in that directive wheel (12) and pulling roll (31) are installed on the spring-loading rocking bar (25) that is provided with swingably.
8. Sewing machines pay-off according to claim 7 is characterized in that, directive wheel (12) and pulling roll (31) are installed on the adjustable cam pin (26) that is supported by rocking bar (25).
9. according to claim 7 or 8 described Sewing machines pay-offs, it is characterized in that, rocking bar (25) be arranged on the front belt wheel (11) but the axle journal (15) of firm grip go up and have a vertical hole (34), and one is contained in the inner transverse holes (36) of spring lever (35) by passing axle journal (15) in this vertical hole (34), wherein can obtain the pretension of spring lever (35) by rotating journal (15).
10. according to the described Sewing machines pay-off of one of claim 7 to 9, it is characterized in that, rocking bar (25) but before sewing process backward high speed swinging make pulling roll (31) reach resting position so far.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001160387 DE10160387C1 (en) | 2001-12-10 | 2001-12-10 | Fabric advance mechanism, at a sewing machine, has a take-off roller in friction drive contact with the trailing belt roller, and of a larger diameter to increase the fabric advance action |
| DE10160387.8 | 2001-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1424452A true CN1424452A (en) | 2003-06-18 |
Family
ID=7708534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02154782 Pending CN1424452A (en) | 2001-12-10 | 2002-12-04 | Feeder of sewing machine |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2003190685A (en) |
| CN (1) | CN1424452A (en) |
| BR (1) | BR0205003A (en) |
| DE (1) | DE10160387C1 (en) |
| MX (1) | MXPA02012147A (en) |
| PT (1) | PT102881B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010086795A2 (en) * | 2009-01-29 | 2010-08-05 | Lohia Starlinger Limited | A fabric pulling mechanism for automated sewing or seam making machines and a method of pulling fabric |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4303027A (en) * | 1978-07-10 | 1981-12-01 | Tokico, Ltd. | Cloth feeding apparatus |
| IT1100713B (en) * | 1978-12-13 | 1985-09-28 | Rockwell Rimoldi Spa | PERFECT AUXILIARY TRANSPORT DEVICE FOR SEWING MACHINES WITH SEPARATOR KNIFE |
| DE3210997C2 (en) * | 1982-03-25 | 1989-11-23 | Kochs Adler Ag, 4800 Bielefeld | Feed gear of a sewing machine |
| DE3344761C1 (en) * | 1983-12-10 | 1985-07-18 | Union Special Gmbh, 7000 Stuttgart | sewing machine |
-
2001
- 2001-12-10 DE DE2001160387 patent/DE10160387C1/en not_active Expired - Fee Related
-
2002
- 2002-12-04 CN CN 02154782 patent/CN1424452A/en active Pending
- 2002-12-06 PT PT10288102A patent/PT102881B/en not_active IP Right Cessation
- 2002-12-09 MX MXPA02012147 patent/MXPA02012147A/en not_active Application Discontinuation
- 2002-12-09 JP JP2002357129A patent/JP2003190685A/en active Pending
- 2002-12-09 BR BR0205003A patent/BR0205003A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| PT102881A (en) | 2003-06-30 |
| PT102881B (en) | 2004-02-27 |
| MXPA02012147A (en) | 2005-08-16 |
| DE10160387C1 (en) | 2003-06-26 |
| JP2003190685A (en) | 2003-07-08 |
| BR0205003A (en) | 2004-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |