TW202009338A - Mechanism to reverse tubular textile material and the method - Google Patents

Abstract

A mechanism and method to reverse a tubular textile material, such as sock, upon sewing off the open end after knitted in the knitting machine and then transferred from knitting needles.

Description

Turning mechanism and method of tubular fabric

The invention relates to a turning mechanism and method for turning a tubular knitted fabric. The fabric is, for example, a sock body knitted by a knitting machine. The sock body is first removed from the knitting needles of the knitting machine, and then The opening of the sock body is sutured. The turning mechanism and method disclosed in the present invention can be used to turn the sock body before and after sewing.

Tubular knitted fabrics (such as socks) are woven by a knitting machine with openings at both ends of the fabric; the aforementioned fabric will be removed from the knitting needle of the knitting machine and moved to a sewing station to sew one end of the fabric (sock tip) as Patent EP23777979 is described. The seam of the sock tip is on the outside of the fabric. When the sock tip is stitched, the excess seam will be exposed, and it is not appropriate to sell the product with the exposed seam to the customer. Therefore, the manufacturer will be required to turn over the suture surface of the sock body so that the suture is located inside the sock body. For the industry, automating the turning operation of the tubular fabric will inevitably reduce costs. At present, the patents for turning the sock body have been recorded in the previous cases US5052196 and WO02070801. The solutions disclosed in the known technologies are not only complicated but also costly.

The purpose of the present invention is to provide a mechanism and method for effectively turning fabrics, which is particularly suitable for tubular fabrics.

To achieve this object, the present invention provides a mechanism capable of turning a tubular fabric, which includes: a vertically extending suction tube; an air suction unit connected to the suction tube to generate air suction. The turning mechanism also includes a driving source that allows the suction pipe to move up and down, a guide unit is provided in the suction pipe and protrudes from the lower end of the suction pipe, and a vertically extending support unit is used to take the tubular shape Fabric.

A preferred embodiment is that the guide unit includes at least two poles extending vertically, the poles are located in the suction pipe and are coaxially arranged, and a collar is provided at the lower end of the poles .

A preferred embodiment is that the supporting unit is in the shape of a long rod, and its axis is projected on the inner side of the collar.

The invention also discloses a braiding machine for producing a tubular fabric, including a bracket, and the aforementioned turning mechanism.

The invention also discloses a method for turning a tubular fabric, which includes the following steps: a) removing a tubular fabric located on a knitting needle of a knitting machine; b) using a turning mechanism described in Patent Claim 1 The tubular fabric is turned over; c) an open end of the tubular fabric is sewn at a sewing station; and d) the tubular fabric is turned over again using the turning mechanism.

In this way, the turning mechanism of the present invention is suitable for turning operations of tubular fabrics before and after sewing, and can achieve automatic production.

The present invention is exemplified and described in detail to further illustrate the mechanism of the present invention, but the actual effect of the present invention is not so limited.

The embodiment provided by the present invention is a turning mechanism capable of accurately turning the sock body, that is, a mechanism that turns the sock body after the sock body is knitted and the opening is stitched, so that the stitches are left inside the sock body And methods.

As mentioned in the previous case EP2377979, when the sock body knitting process is completed, the sock point is open and the stitches of the sock point are still left in the knitting needle of the knitting machine, and a plurality of strip-shaped elements and transfer elements are used to sew the sock point of the sock body These elements face each other in two opposite brackets, as described in the previous case EP2377979.

As shown in FIG. 1, the turning mechanism (60) disclosed in the present invention includes a suction pipe (61) extending vertically, an air suction device connected to the suction pipe (61) to generate air suction, and a guiding unit (62) It is installed at the bottom end of the suction pipe (61), and a supporting unit (64) is located under the guide unit (62). It is suitable for any situation where the sock body is still open after the knitting is completed and removed. Implemented in stages, for example when the last line of stitching is on the transfer element or when the sock is on the sewing station. In this embodiment, the sock body with the open end is turned over when it is on the conveying element, and then transferred to the sewing table, and then turned over after being sutured.

As shown in Fig. 2, the sock body (70) with an open end is located on the bracket (20a) provided with the transfer element, as described in the previous case EP2377979. In fact, the strip-shaped elements located on two different brackets are aligned with each other, as described in the previous case EP2377979. In order to avoid confusion, there are strip-shaped elements on other brackets which are not shown.

First, the bracket (20a) moves the sock body (70) and is located under the suction pipe (61) and the guide unit (62) in the turning mechanism (60). Wherein, the suction pipe (61) can be moved up and down by driving the connecting body (67) and the driving source (611) located on the carrier (68). 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 first The two pulleys (613) are arranged at a higher position of the body (67) and away from the driving source (611), and a timing belt (614) (timing belt) is arranged between the first pulley (612) and the second pulley (613) In the meantime, the rack on the timing belt (614) meshes with the gear on the suction pipe (61) to transmit power. In addition, the driving mechanism of the suction pipe (61) moving up and down can also be replaced by other conventional technologies.

The guide unit (62) is located in the suction pipe (61) and extends vertically along the axis of the suction pipe (61) for an appropriate length. In this embodiment, the guide unit (62) is fixedly installed on the suction pipe (61) without relative displacement with the suction pipe (61).

In this embodiment, the guide unit (62) includes three support rods coaxially arranged at equal intervals in the suction pipe (61). The number of supporting rods in the embodiment is at least 2 or more, and may be 4 or 5...etc.

In this embodiment, the guide unit (62) may also be provided with a collar (63) at the lower part of the aforementioned support rod. In this embodiment, the guide unit (62) protrudes from the lower end of the suction pipe (61), and there is a gap between the lower end of the suction pipe (61) and the collar (63), as shown in the figure 3 shown. When the suction pipe (61) moves downward, the bottom end of the suction pipe (61) can be slightly lower than the open end of the sock body. Since the length of the sock body is known, the distance that the suction pipe (61) moves downward can be preset by the control unit.

After the bottom end of the suction tube (61) is lower than the open end of the sock body, the air suction device will be activated so that the suction tube (61) starts to suck in air. The aforementioned air suction device may be a separate vacuum pump, or it may cooperate with this The invention is provided with a valve body located on the existing vacuum line in the hosiery machine. At the same time, the suction tube (61) starts to move upward. When the lower end of the suction tube (61) moves 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 Figure 4. When the suction tube (61) continues to move upwards, the reserved part of the sock body is also drawn into the tube. Since the open end of the sock body is still fixed on the conveying element of the bracket (20a), it will not be sucked into the suction pipe (61). The sucked sock body (70) is interposed between the suction pipe (61) and the guide unit (62), as shown in FIG.

In the next stage, the sock body (70) will be transferred to the stitching station for stitching. In this case, the guide unit (62) remains in the sock body (70) where the tip of the sock is sewn, as shown in FIG. 15.

As shown in FIG. 8 or FIG. 15, the supporting unit (64) extends vertically below the sewing table. The supporting unit (64) has a long stick-like appearance, and can be moved close to or away from the sewing table by means of rotation. In other embodiments, the supporting unit (64) may be closer to or away from the sewing table in a vertical direction instead of rotating.

The lower end of the supporting unit (64) is connected with a longitudinally extending support plate (641), the support plate (641) is connected to a rotating shaft (642), and the rotating shaft (642) is connected to a bracket (644) in a rotating manner, the bracket (644) There is also a driving source (643) capable of rotating the rotating shaft (642), and the aforementioned driving source (643) may be a pneumatic cylinder, but it is not limited thereto.

After the sock tip (70) is stitched, the supporting unit (64) will be driven to rotate to a position, as shown in FIG. 7 or FIG. 16. In this case, the extending direction of the long axis of the supporting unit (64) coincides with the axis of the suction pipe (61) and the collar (63), or at least aligns with the center position of the collar (63). Then, the suction pipe (61) moves downward and the air suction device will be closed, so that the sock body (70) is released and stays in the supporting unit (64), at the same time the turning action of the sock body (70) is completed, Keep the suture inside the sock body (70).

20a‧‧‧Bracket 60‧‧‧turning mechanism 61‧‧‧Suction pipe 611‧‧‧Drive source 612‧‧‧The first pulley 613‧‧‧Second pulley 614‧‧‧ Timing belt 62‧‧‧Guiding unit 63‧‧‧collar 64‧‧‧Support unit 641‧‧‧Support plate 642‧‧‧spindle 643‧‧‧Drive source 644‧‧‧Bracket 67‧‧‧Body 68‧‧‧vehicle 70‧‧‧Socks 71‧‧‧Sock tip

Fig. 1 is a perspective view of a turning mechanism.

Fig. 2 is a perspective view of the turning mechanism, showing the state before turning the socks.

Fig. 3 is a perspective view of the turning mechanism, showing that the suction pipe and the guide unit pass through the sock body.

Fig. 4 is a perspective view of the turning mechanism, showing that the sock body is drawn into the suction pipe.

Fig. 5 is a perspective view of the turning mechanism, showing that the sock body is drawn into the suction pipe.

6 is a perspective view of the flip mechanism, which shows that the supporting unit is far away from the suction pipe.

7 is a perspective view of the flip mechanism, which shows that the supporting unit is aligned with the suction pipe.

FIG. 8 is a perspective view of the flip mechanism, which shows a state where the supporting unit is aligned with the suction pipe, and the suction pipe moves downward.

Fig. 9 is a perspective view of the turning mechanism, showing the state of being taken by the supporting unit after the sock tip is sewn.

Fig. 10 is a perspective view of the turning mechanism, showing the state of being taken by the holding unit after the sock tip is sewn at the final stage.

FIG. 11 is a conceptual diagram of the front view of FIG. 2.

FIG. 12 is a conceptual diagram of the front view of FIG. 3.

FIG. 13 is a conceptual diagram of the front view of FIG. 4.

Fig. 14 is a conceptual diagram of the front view of Fig. 5.

Figure 15 is a front view of the turning mechanism, which shows that the toe tip has been sutured.

16 is a front view of the flip mechanism, which shows that the supporting unit is aligned with the suction pipe.

Fig. 17 is a front view of the turning mechanism, showing the state when the toe is sewn and taken by the holding unit.

Fig. 18 is a front view of the turning mechanism, which shows the final stage when the sock tip is sewn and taken by the support unit.

60‧‧‧turning mechanism

61‧‧‧Suction pipe

611‧‧‧Drive source

612‧‧‧The first pulley

613‧‧‧Second pulley

614‧‧‧ Timing belt

62‧‧‧Guiding unit

63‧‧‧collar

64‧‧‧Support unit

67‧‧‧Body

Claims (14)

A turning mechanism of a tubular fabric, the tubular fabric has an open end, the turning mechanism includes: a vertically extending suction tube; an air suction device connected to the suction tube to generate air suction, characterized by: A driving source is also included to drive the suction tube to move up and down, a guide unit is provided inside the suction tube and protrudes from the lower end of the suction tube to allow the fabric to penetrate, and a support extending vertically The unit is arranged below the air suction pipe, and is used to take the fabric from the guide unit. The turning mechanism according to claim 1, wherein the guiding unit includes at least two supporting rods extending vertically, the supporting rods are located in the suction pipe and are coaxially arranged. The turning mechanism according to claim 2, wherein the guiding unit further has a collar, which is disposed at the lower end of the struts. The flip mechanism according to claim 3, wherein the supporting unit is in the shape of a long rod, and its axis is projected inside the collar. The flip mechanism according to claim 1, wherein the supporting unit is in the shape of a long rod, and the extending direction of the long axis thereof coincides with the axis of the suction pipe and the collar. The turning mechanism according to claim 1, wherein the supporting unit has a rotating shaft to rotate. The turning mechanism according to claim 1, wherein the supporting unit is vertically actuated. The turning mechanism according to claim 1, wherein the suction pipe is movably disposed on a body, and a drive source is provided on the body to drive the suction pipe to move. The turning mechanism according to 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. A braiding machine for producing a tubular fabric, including a bracket, and the turning mechanism described in any one of claims 1 to 9 of the patent application. A method for turning over a tubular fabric, which includes the following steps: a) Remove a tubular fabric located on the knitting needles of a knitting machine; b) Use a turning mechanism described in patent claim 1 to turn the tubular fabric; c) sewing an open end of the tubular fabric at a sewing station; and d) Use the turning mechanism to turn the tubular fabric again. The turning method according to claim 11, wherein the turning operation in step b) is performed before entering the sewing station or operating on the sewing station. The turning method as described in claim 11, wherein step b) further includes the following steps: b1) A suction tube of the turning mechanism passes through the bottom end of the fabric to be stitched, and then moves down; b2) When the suction pipe moves down below the open end of the fabric, it stops immediately; b3) Start the air suction device of the flip mechanism; b4) The suction pipe moves upward; and b5) The fabric is sucked into the suction pipe and turned over. The turning method as described in claim 11, wherein step d) includes the following steps: d1) The holding unit is brought under the stitched fabric; d2) The suction pipe drives the stitched fabric downward; and d3) Release the fabric to the supporting unit.

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