Tubular fabric turn-over mechanism and method thereof
阅读说明：本技术 管状织物的翻面机构及其方法 (Tubular fabric turn-over mechanism and method thereof ) 是由 殷里·孟斯塔法 于 2019-03-21 设计创作，主要内容包括：本发明提供一种将管状织物,例如袜子,进行翻面的翻面机构及其方法,该织物是在针织机织造完成后从编织机的织针上移出,然后将开口端缝合。(The present invention provides a turn-over mechanism and method for turning over a tubular fabric, such as a sock, which is removed from a knitting needle of a knitting machine after completion of knitting by the knitting machine, and then the open end is sewn.)
1. A turn-over mechanism for tubular fabric with an open end is composed of a vertically extended suction pipe; an air suction device, connect this aspiration channel in order to produce air suction, its characterized in that:
the fabric drawing device also comprises a driving source which drives the air suction pipe to move up and down, a guiding unit which is arranged in the air suction pipe and protrudes out of the lower end of the air suction pipe so as to be penetrated by the fabric, and a supporting unit which extends vertically and is arranged below the air suction pipe so as to receive the fabric from the guiding unit.
2. The turn-over mechanism as claimed in claim 1, wherein the guiding unit comprises at least 2 vertically extending struts, which are coaxially arranged and located in the draft tube.
3. The turn-over mechanism of claim 2, wherein the guiding unit further comprises a collar disposed at the lower end of the struts.
4. The turn-over mechanism of claim 3, wherein the supporting unit is in the shape of a long bar with its axis projected inside the collar.
5. The turn-over mechanism as claimed in claim 1, wherein the supporting unit is in the shape of a long bar, and the long axis of the supporting unit extends along the axial center of the air suction pipe and the shaft collar.
6. The mechanism of claim 1, wherein the support unit has a shaft for rotation.
7. The turn-over mechanism of claim 1, wherein the support unit is vertically actuated.
8. The turn-over mechanism as claimed in claim 1, wherein the air suction pipe is movably disposed on a body, and a driving source is disposed on the body for driving the air suction pipe to move.
9. The turn-over mechanism as claimed in claim 8, wherein two pulleys are provided between the body and the driving source, and a timing belt is connected between the pulleys to transmit power.
10. A knitting machine for producing a tubular fabric, comprising a carrier and a turn-over mechanism as claimed in any one of claims 1 to 9.
11. A method of turning a tubular fabric, comprising the steps of:
a) removing a tubular fabric located on the needles of a knitting machine;
b) turning over the tubular fabric by a turn-over mechanism as claimed in claim 1;
c) seaming an open end of the tubular fabric at a seaming station; and
d) and turning over the tubular fabric again by using the turning-over mechanism.
12. The turn-over method of claim 11, wherein the turn-over operation of step b) is performed before or at the stitching station.
13. The turn-over method of claim 11, wherein step b) further comprises the steps of:
b1) an air suction pipe of the turnover mechanism penetrates through the bottom end of the fabric to be sewn and then moves downwards;
b2) when the air suction pipe moves downwards to be lower than the opening end of the fabric, the air suction pipe stops;
b3) starting an air suction device of the turn-over mechanism;
b4) the air suction pipe moves upwards; and
b5) the fabric is sucked into the suction duct and then turned upside down.
14. The turn-over method of claim 11, wherein step d) comprises the steps of:
d1) the supporting unit is taken below the sewed fabric;
d2) the air suction pipe drives the fabric which is sewed to move downwards; and
d3) the fabric is released to be located in the supporting unit.
Technical Field
The invention relates to a turn-over mechanism and a method thereof for turning over a tubular knitted article, wherein the knitted article is a sock body knitted by a knitting machine, the sock body is taken off from a knitting needle of the knitting machine and then an opening of the sock body is sewn.
Background
Tubular knitted goods (such as socks) are woven by a knitting machine, and both ends of the goods are provided with openings; the aforesaid fabric is removed from the needles of the knitting machine and moved to a sewing station for sewing an opening (toe) of the fabric, as described in patent EP 23777979. The sewing place of the sock toe is on the outer side of the fabric, when the sock toe is sewn, the redundant sewing thread is exposed, and the goods with the exposed sewing thread are not suitable for being sold to customers. Therefore, the manufacturer is required to turn over the sewing surface of the sock body so that the sewing thread is positioned inside the sock body. For the manufacturers, the turnover operation of the tubular fabric is automated, which inevitably reduces the cost. The prior art discloses solutions which, in addition to being relatively complex, are also relatively costly, as the patents for the turning-over of socks are already described in the prior art US5052196 and WO 02070801.
Disclosure of Invention
In view of the above, the present invention provides a mechanism and method for effectively turning over a fabric, especially for tubular fabrics.
In order to achieve the purpose, the invention provides a mechanism capable of turning over a tubular fabric, which comprises: a vertically extending aspiration channel; an air suction unit is connected to the suction pipe to generate air suction. The turn-over mechanism also comprises a driving source which can lead the air suction pipe to move up and down, a guiding unit which is arranged in the air suction pipe and protrudes out of the lower end of the air suction pipe, and a supporting unit which extends vertically and is used for receiving and taking the tubular fabric.
In a preferred embodiment, the guiding unit comprises at least 2 vertically extending struts, the struts are coaxially arranged in the suction pipe, and an annular ring is disposed at the lower ends of the struts.
In a preferred embodiment, the supporting unit is in the form of an elongated rod whose axis projects inside the collar.
The invention also discloses a knitting machine which is used for producing a tubular fabric and comprises a bracket and the turn-over mechanism.
The invention also discloses a method for turning over the tubular fabric, which comprises the following steps:
a) removing a tubular fabric located on the needles of a knitting machine;
b) turning over the tubular fabric by a turn-over mechanism as claimed in claim 1;
c) seaming an open end of the tubular fabric at a seaming station; and d) turning over the tubular fabric again by using the turning-over mechanism.
Therefore, the turn-over mechanism is suitable for turn-over operation of tubular fabrics before and after sewing, and can achieve automatic production.
Other effects and embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a perspective view of the turn-over mechanism.
Fig. 2 is a perspective view of the turn-over mechanism showing a state before turning over the socks.
Fig. 3 is a perspective view of the turn-over mechanism, showing the air suction pipe and the guide unit passing through the sock body.
Fig. 4 is a perspective view of the turn-over mechanism showing the socks being sucked into the suction duct.
Fig. 5 is a perspective view of the turn-over mechanism showing the socks being sucked into the suction duct.
Fig. 6 is a perspective view of the turn-over mechanism showing the support unit away from the aspiration channel.
Fig. 7 is a perspective view of the turn-over mechanism showing the support unit aligned with the air suction pipe.
Fig. 8 is a perspective view of the turn-over mechanism showing the supporting unit aligned with the air suction pipe and the air suction pipe moving downward.
FIG. 9 is a perspective view of the turn-over mechanism, showing the state of being taken by the holding unit after the toe is sewn;
fig. 10 is a perspective view of the turn-over mechanism, showing a final stage, in which the toe is taken by the holding unit after being sewn;
FIG. 11 is a front conceptual view of FIG. 2;
FIG. 12 is a front conceptual view of FIG. 3;
FIG. 13 is a front conceptual view of FIG. 4;
FIG. 14 is a front conceptual view of FIG. 5;
FIG. 15 is a front view of the turn-over mechanism, showing the toe having completed stitching;
FIG. 16 is a front view of the turn-over mechanism showing the support unit aligned with the air aspiration tube;
FIG. 17 is a front view of the turn-over mechanism, showing the state when the toe is sewn and taken by the holding unit;
fig. 18 is a front view of the turn-over mechanism, showing the final stage, when the toe is sewn and taken up by the support unit.
Description of the symbols
61
612
614
63 Collar 64 support unit
641 supporting
643
67
70
Detailed Description
The present invention is illustrated and described in detail herein to further illustrate the mechanisms of the present invention, and the practical utility of the present invention is not limited thereby.
The embodiment of the invention provides a turn-over mechanism and a method, which can exactly turn over a sock body, namely turn over the sock body after the sock body is knitted and an opening is sewn, and leave a sewing thread in the sock body.
When the body is completely knitted, as described in EP2377979, the toe is open and the stitches of the toe remain on the needles of the knitting machine, a plurality of strip-like elements and transfer elements for the toe of the body are applied, opposite one another, in two opposite cradles, as described in EP 2377979.
As shown in fig. 1, the turn-over mechanism (60) disclosed in the present invention comprises a vertically extending suction duct (61), an air suction device connected to the suction duct (61) to generate air suction, a guiding unit (62) disposed at the bottom end of the suction duct (61), and a holding unit (64) disposed below the guiding unit (62) and adapted to be applied at any stage of the sock body in a state that the sock body still has an open end after being woven and removed, such as when the last row of stitches is on the conveying assembly or when the sock is at the sewing station. In this embodiment, the sock body with the open end is turned over while it is on the transfer assembly, then transferred to the sewing station, sewn and then turned over.
As shown in fig. 2, the sock body (70) with the open end is positioned on a carriage (20a) provided with a transfer assembly, as described in the aforementioned EP 2377979. In fact, the strip-like elements on two different carriages are positioned in alignment with each other, as described in the aforementioned EP 2377979. To avoid confusion, other strip-like elements on other brackets are not shown.
Firstly, the bracket (20a) moves the sock body (70) and is positioned below the air suction pipe (61) and the guide unit (62) in the turn-over mechanism (60). Wherein the air suction pipe (61) can move up and down by being driven by a connecting body (67) and a driving source (611) positioned on the carrier (68). In order to ensure the connection between the suction pipe (61) and the body (67), as shown in fig. 1, the body (67) is provided with a first pulley (612) connected to the output shaft of the driving source (611), a second pulley (613) is arranged at a higher position of the body (67) and far away from the driving source (611), a timing belt (614) is arranged between the first pulley (612) and the second pulley (613), and a gear on the suction pipe (61) is engaged and connected by a rack on the timing belt (614) for power transmission. In addition, the driving mechanism of the air suction pipe (61) moving up and down can be replaced by other prior art.
The guiding unit (62) is positioned in the air suction pipe (61) and vertically extends for a proper length along the axis of the air suction pipe (61). In this embodiment, the guiding unit (62) is fixedly disposed on the air suction pipe (61) without relative displacement with respect to the air suction pipe (61).
In this embodiment, the guiding unit (62) comprises three struts coaxially and equidistantly arranged in the air suction pipe (61). The number of the struts in the embodiment is at least more than 2, and may be 4 or 5 …, etc.
In this embodiment, the guiding unit (62) may further include a collar (63) at a lower portion of the supporting rod. In this embodiment, the guiding unit (62) protrudes from the lower end of the air suction pipe (61), and a gap exists between the lower end of the air suction pipe (61) and the collar (63), as shown in FIG. 3. When the air suction pipe (61) moves downwards, the bottom end of the air suction pipe (61) is slightly lower than the open end of the sock body. Since the length of the sock body is known, the distance that the suction tube (61) moves downwards can be preset by the control unit.
After the bottom end of the air suction pipe (61) is lower than the open end of the sock body, the air suction device can be started to enable the air suction pipe (61) to start sucking air, and the air suction device can be a single vacuum pump or a valve body which is matched with the existing vacuum on-line in the sock knitting machine. At the same time, the suction tube (61) starts to move upwards, and when the lower end of the suction tube (61) is moved to be aligned with the open end of the sock body, the sock body (70) starts to be sucked into the suction tube (61), as shown in fig. 4. When the air suction pipe (61) continuously moves upwards, the sock body reserved part is also sucked into the air suction pipe. Because the open end of the sock body is still fixed on the conveying component of the bracket (20a), the sock body can not be sucked into the suction pipe (61). The sucked sock body (70) is interposed between the suction duct (61) and the guide unit (62), as shown in fig. 13.
In the next stage, the sock body (70) is transferred to a sewing station for sewing. In this case, the guide unit (62) remains in the sock body (70) with the toe sewn, as shown in fig. 15.
As shown in FIG. 8 or FIG. 15, the supporting unit (64) is vertically extended below the sewing table. The support unit (64) has an elongated stick-like appearance and can be moved toward and away from the sewing table by rotation. In other embodiments, the support unit (64) may be vertically closer to or farther from the sewing table rather than being rotated.
The lower end of the supporting unit (64) is connected to a supporting plate (641) extending longitudinally, the supporting plate (641) is connected to a rotating shaft (642), the rotating shaft (642) is rotatably connected to a bracket (644), the bracket (644) is further provided with a driving source (643) capable of rotating the rotating shaft (642), and the driving source (643) can be a pneumatic cylinder, but not limited thereto.
After the toe (70) is sewn, the support unit (64) is driven to rotate to a position, as shown in fig. 7 or 16. In this case, the extension direction of the long axis of the supporting unit (64) coincides with the axial centers of the air suction pipe (61) and the collar (63), or at least aligns with the central position of the collar (63). Then, the air suction pipe (61) moves downwards and the air suction device is closed, so that the sock body (70) is released to stay on the supporting unit (64), and meanwhile, the turning-over action of the sock body (70) is completed, and the stitches are kept in the sock body (70).
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the implementations of the present technology in any way, and those skilled in the art can make many modifications or changes without departing from the scope of the technology disclosed in the present disclosure, but should be construed as technology or implementations that are substantially the same as the present technology.
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