EP1630277B1 - Apparatus for closing toe parts of socks - Google Patents
Apparatus for closing toe parts of socks Download PDFInfo
- Publication number
- EP1630277B1 EP1630277B1 EP20050005355 EP05005355A EP1630277B1 EP 1630277 B1 EP1630277 B1 EP 1630277B1 EP 20050005355 EP20050005355 EP 20050005355 EP 05005355 A EP05005355 A EP 05005355A EP 1630277 B1 EP1630277 B1 EP 1630277B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sock
- head
- sewing
- sewing head
- motor
- 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.)
- Ceased
Links
- 238000009958 sewing Methods 0.000 claims description 68
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009941 weaving Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004826 seaming Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B23/00—Sewing apparatus or machines not otherwise provided for
- D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part
- D05B23/009—Toe closers
Definitions
- the present invention relates to an apparatus for closing toe parts of socks.
- the invention relates to an assembly equipped with a microprocessor controlled assembly that enables a shifting movement of the sewing heads, thereby enabling fine seaming of the toe part of the sock.
- Sock weaving machines weave the sock in seven parts, namely welt 1, heel 3, sole 4, toe 5, toe seam allowance 6, scrap 7 and leg portion 2. Once the sock is woven, the toe part of the sock coming from the knitting machine is seamless, i.e. open (see Figure 1 ).
- a conventional hosiery toe closing apparatus consists of following components: a clip 8 on which the sock is fitted, a chain 9 that inserts the sock fitted to the clip 8 into a conveyor 13, a knife assembly 10 that cuts and separates the scrap part 7 of the sock, a first head 11 sewing the hosiery toe, a second head 12 sewing the hosiery toe, a conveyor 13 passing the sock through the seam frame 14, an arm 15 for securing the heads 11 and 12 to the frame, an upper revolving body 16, a lower stationary body 17 and a base 18 ( Figure 2 ).
- the stages of a sock toe sewing apparatus conventionally comprise the following steps: during production the sock toe seam allowance 6 is made of fine yarn and is clipped to the clip from this sock seam.
- the guide chain 9 catches the sock from its scrap part 7 and inserts the sock appropriately on the conveyor ( Figure 3 ).
- the scrap part 7 of the sock advancing on the conveyor is cut when passing through the knife assembly 10 and this scrap part is sucked by a suction mechanism and sent into a separate vessel ( Figure 4 ).
- the hosiery toe of the sock is ready for sewing.
- the sock passes under the first head 11, it is sewn by the needle on this head.
- the first head is firmly attached to the frame of the apparatus and, therefore, the sock transported in the linearly moving conveyor enables the stationary head 11 to perform a linear sewing ( Figure 5 ).
- FIG. 7a and 7b A top view of the hosiery toe seam form resulting from the foregoing assembly is shown in Figures 7a and 7b .
- the sock toe is composed of three components.
- the component indicated by 21 represents the seam line
- the component indicated by 20 represents the region within the seam
- the elements indicated by 22 represent the side regions.
- the region within the seam is relatively thick and it is not possible that side regions are wasted (cracked) with such a thick seam. Therefore a solid sewing configuration is obtained by this arrangement.
- this kind of thick seam socks may irritate the toe region of the user because of a frictional effect of the shoe against the sock and thus makes the sock uncomfortable to wear.
- the region 20 within the seam is made of fine seam.
- the side regions 22 cannot be sewn and, as a consequence thereof, the toe part of the sock may be cracked.
- GB-A-1071461 discloses a toe closing apparatus in which the toe end of a sock lying on a horizontal plane is closed by means of a sewing head which is horizontally moved through a carriage on profiled platforms.
- EP-A-0075477 discloses a hose holder which is rotatable about a horizontal axis.
- US-A-4132183 discloses an apparatus for forming a highly arcuate seam in the open toe end of hosiery blanks, comprising a fixed sewing head and rotatable clamping members which can rotate on a horizontal plane.
- the aim of the present invention is to sew the hosiery toe parts in an efficient way on the one hand with a fine seam and on the other hand without cracking the side parts of the hosiery toe region.
- the apparatus preferably comprises a clip for fitting the sock the toe of which is to be sewn, a guide chain for inserting the sock on the clip to the conveyor, a knife assembly for cutting and separating the scrap part from the sock, at least one sewing head for sewing the sock hosiery toe, a conveyor for conveying the sock to the sewing heads and a frame connected to this at least one sewing head, which is movable with respect to the frame.
- the sewing head is movable in a substantially vertical direction with respect to the sock conveying direction or to the plane of the conveyor.
- two sewing heads are provided, namely a first head and a second head. Movement of these heads is driven by an automatic assembly that preferably comprises a sensor for identifying the sock advancing on the conveyor, a counter for detecting the position of the sock as well as its width and its distance from the sewing head, a microprocessor in which the data taken from these components are fed and a motor component controlled by this microprocessor.
- the toe regions of socks can be sewn on the one hand in a fine way and on the other hand without wasting (cracking) the side parts of the toe regions.
- Figures 1 to 7 regard conventional arrangements which have been discussed above.
- FIG. 8 is an illustration of a first embodiment of the hosiery toe apparatus. According to this figure, a sock coming from a weaving apparatus and still not having a seam in its toe part is fitted to the apparatus by means of a clip assembly 8 of the known kind.
- the clip assembly 8 is connected to a guide chain 9 and the insertion of the sock to a linearly moving conveyor 13 is made through this guide chain 9.
- the hosiery toe apparatus comprises a screw 41 and a proximity counter 42 sensible to this screw.
- Screw 41 is preferably attached to the main shaft of the sock apparatus and counter 42 is attached to the frame. At each rotation of the main shaft, the screw 41 comes face to face with the counter 42, the counter detects the face to face position and produces a signal that is fed to a microprocessor ⁇ P.
- sensing devices e.g. of the optical kind, may be alternatively used for detecting the sock parameters.
- the scrap part of the sock shown in Figure 1 is removed from the sock by the knife assembly 10 and taken away from the apparatus, preferably via a suction unit (not shown).
- An optical eye 43 sensor is provided for identifying the sock, before the toe part of the sock transported by the conveyor 13 is sewn.
- the signal received from the optical eye 43 is fed to the microprocessor.
- the optical eye 43 is designed to comprise a light source preferably provided in a signal transmitting cable 23 ( Figure 10 ) and a light receptor provided in a signal receiving cable 24. An opening 25 is provided between these cables 23,24.
- Sewing of the sock toe is preferably accomplished by means of two heads, namely a first head 11 and a second head 12.
- a structure made of only one head can optionally perform the sewing procedure, too.
- the first head 11 preferably makes a weak seam in the form of basting
- the second head 12 is the head in which the main seam is performed.
- the components of the hosiery toe apparatus stated above are provided on a frame 14.
- the sewing heads 11,12 or, in case of assemblies provided with one head only, the sewing head or anyone of these heads can move with respect to the frame 14 and, preferably, this movement is made in a vertical plane along an upward/downward directions.
- the movable head or heads can also be moved along a direction that is sloped with respect to the vertical or horizontal planes.
- the movable sewing heads are pivotally mounted on the frame 14 so that they can rotate about an axis 38 together with the sewing mechanisms that are mounted into the sewing head.
- the axis 38 is laterally spaced with respect to the needle 19.
- a motor which receives the signals needed for the rotational drive from the microprocessor and which is connected to the moving head 12.
- this motor is a step motor.
- other types of motor that are known to the person skilled in the art can be provided in the alternative.
- An arrangement for driving the head 12 is schematically shown in the flow-chart of Figure 9 .
- the signals taken from the optical eye 43 and the counter 42 are fed to the microprocessor ⁇ P and the motor 45 controlled by the microprocessor, depending on the coming drive, makes a rotational movement and drives the head 12.
- the assembly shown in Figs. 11-13 provides for the movement transmission from the motor to the head according to a first embodiment of the invention.
- the movement transmission assembly comprises bearings 27 connected to the frame 14, a shaft 28 mounted between these bearings 27 and eccentric component 29 integrated to this shaft.
- Shaft 28 is equipped at one end with a driving gear 30.
- a chain 31 connects this driving gear 30 to a gear 32 that is attached at one end of the motor.
- An embodiment comprising only one movable head (without using another head) may be provided, too.
- a separate motor component for each sewing head can be provided.
- a rim attached to a motor a rim attached to the shaft 28 and a rim mechanism comprising a strap transmitting the movement between these rims.
- a gear connected to the motor a gear wheel mechanism comprising another gear directly connected to this gear and attached with its axis to the shaft 28 or revolving components that can be driven with magnetic force and having various geometric forms.
- the eccentric component 29 By means of the assembly of Figures 8 and 11 , when the motor is rotated the eccentric component 29 also rotates.
- the eccentric component 29, as can be seen in Figure 12 is connected to a movement transmission component 33 and enables this component 33 to be shifted.
- the eccentric component 29 contacts a roller bearing 35 formed on one end of this movement transmission component 33.
- This roller bearing 35 is attached by means of a pin 36 to the movement transmission component 33.
- the movement transmission component 33 is secured to the head 12 through a hole 34 opened on it, as can be seen in Figure 12 .
- FIG 13 the assembly driving the head 12 and the head 12 are shown together.
- the head 12 is attached to the frame 14 via a revolving bearing so as to be rotatable about an axis 38.
- a spring assembly is also provided which is able to dump to the frame vibrations that may occur in the movable head 12.
- a spring connection part 37 comprised in the movement transmission component 33 is connected to an arm of this component 33 provided with a spring 39 along its axis.
- the sewing head of Figures 15-18 is rotatable about an axis 38 so as to move the sewing mechanisms associated thereto, such as the needle 19, in an upward/downward direction, thus approaching or departing from the conveyor 13.
- the rotation of the sewing head 12 about axis 38 in the second preferred embodiment is driven by an operating screw assembly 44, in which a threaded rotating shaft 46 of a motor 45 meshes with the internal thread of a saddle or carriage 47 so as to move the saddle in a vertical direction.
- Vertical movement of the saddle 47 is guided by means of vertical guides 49 connecting upper and lower portions of a case 48 which houses the saddle 47 and the rotating shaft 46 of the motor 45.
- the saddle 47 comprises a longitudinal recess 54 extending substantially perpendicularly with respect to the guides 49 and a pin 53 which can slide in the recess 54 by means of roller bearings 55.
- a lever arm 52 is rigidly coupled to the movable sewing head 12 and is connected to the saddle 47 by means of the pin 53. Accordingly, vertical movement of the saddle 47 results in a rotation of the sewing head 12 about its axis 38, i.e. in a movement of the head along an upward/downward direction.
- the motor 45 is preferably a step motor and is operated by means of command signals from the microprocessor.
- the hosiery toe sewing apparatus also comprises a monitor terminal 40, which is connected to the electronic and optical components of the apparatus and serves to set up the operational parameters.
- the distance between the optical eye 43 and the sewing heads 11,12 is predetermined (e.g. about 188 steps) and the generation of commands is provided by sending signals to the microprocessor.
- the head 12 When the sock toe passes under the head 12, the head goes slowly up and, about 16 steps after, the head sews the middle part of the sock keeping its position at a certain height. Finally, before sewing arrives at the second end of the sock, the head 12 gradually lowers for about 16 steps, thereby sewing the region closer to the other end part of the toe region of the sock.
- the head 12 waits for the next sock of which the toe part is to be sewn. Since sock parameters such as height or width vary from sock to sock, this data may be fed to the microprocessor through the monitor terminal 40, i.e. the microprocessor is programmable.
- control system comprising the microprocessor may also be fed with signals from fibre optical sensors of the known type, which sense the above sock parameters upstream of the sewing heads 11, 12.
- FIG. 14 An illustrative view of a sock toe sewn with a hosiery toe closing apparatus according to the present invention is shown in Figure 14 .
- the apparatus and method according to the invention allow hosiery toe sewing to be made in a curved fashion.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2004/01840A TR200401840A2 (tr) | 2004-07-26 | 2004-07-26 | Çorap burunlarının ince dikimi için bir tertibat ve buna ilişkin metot |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1630277A1 EP1630277A1 (en) | 2006-03-01 |
EP1630277B1 true EP1630277B1 (en) | 2008-08-06 |
Family
ID=35094518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050005355 Ceased EP1630277B1 (en) | 2004-07-26 | 2005-03-11 | Apparatus for closing toe parts of socks |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1630277B1 (tr) |
DE (1) | DE602005008678D1 (tr) |
TR (1) | TR200401840A2 (tr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2734486C2 (ru) * | 2016-08-04 | 2020-10-19 | Голден Леди Компани С.П.А. | Устройство и способ прошивки мыска кругловязаного изделия |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110230152B (zh) * | 2019-06-24 | 2020-07-10 | 诸暨市旺来针纺有限公司 | 一种袜头缝合装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1071461A (en) * | 1962-05-16 | 1967-06-07 | Ballito Hosiery Mills Ltd | Improvements in and relating to the toe closing of stockings |
JPS52152360A (en) * | 1976-06-11 | 1977-12-17 | Takatori Kikai Seisakusho Kk | Method and device for automatically sewing rectilinearly seamless stocking toe by stationary sewing machine |
US4132183A (en) * | 1977-02-04 | 1979-01-02 | Kienel Joseph E | Method and apparatus for seaming hosiery blanks |
EP0075477A1 (en) * | 1981-09-23 | 1983-03-30 | Detexomat Machinery Limited | Hosiery toe closer |
-
2004
- 2004-07-26 TR TR2004/01840A patent/TR200401840A2/tr unknown
-
2005
- 2005-03-11 EP EP20050005355 patent/EP1630277B1/en not_active Ceased
- 2005-03-11 DE DE200560008678 patent/DE602005008678D1/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2734486C2 (ru) * | 2016-08-04 | 2020-10-19 | Голден Леди Компани С.П.А. | Устройство и способ прошивки мыска кругловязаного изделия |
Also Published As
Publication number | Publication date |
---|---|
DE602005008678D1 (de) | 2008-09-18 |
EP1630277A1 (en) | 2006-03-01 |
TR200401840A2 (tr) | 2006-08-21 |
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