JP2005105421A - Apparatus for reversing hosiery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for reversing hosiery having functions to prevent creases in gray during knitting of the hosiery and designed to smoothly and surely reverse the hosiery and deliver the hosiery to a toe sewing machine when the knitted hosiery is taken out of a knitting machine and completely automate the production of the hosiery. <P>SOLUTION: The apparatus 1 for reversing the hosiery is composed of each element of a reversing cylinder 2 arranged in a cylinder 21 of the knitting machine 20 for taking in a knitted part of the hosiery into the interior, an actuator 3 for lifting and lowering the reversing cylinder 2, a mechanism 4 for rotating the reversing cylinder 2 synchronously with the rotation of the cylinder 21, an outer cylinder 5 for moving from a standby point onto the cylinder 21, a sucking up cylinder 6 provided in the interior of the outer cylinder 5 for lifting and lowering with an actuator 7 and an air stream generating source 8 for generating an air stream between the outer cylinder 5 and the sucking up cylinder 6. The reversing cylinder 2 is lifted to reverse the hosiery A in which the opening on the toe side is held by knitting needless 22 with the cylinder. The hosiery is simultaneously sucked up by the air stream generated with the air steam generating source 8 and the sucking up cylinder 6 is lowered until the sucking up cylinder enters the interior of the reversing cylinder 2 after completing the reversing. The reversing cylinder 2 is then lowered to deliver the hosiery A to the sucking up cylinder 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sock turning device that makes it possible to smoothly and securely turn a knitted circular knitted sock while taking it out of a knitting machine.

  A sock manufactured using a circular knitting machine (a circular knitted sock) has a toe open when knitting is completed, and requires toe stitching after knitting. One method of stitching the toes is linking, which is performed by turning the knitted socks inside out, picking up the eyes around the perimeter with a sewing machine and sewing the toes together. The socks are completed when the front toe is closed with the tiptoe stitches and the like turned off.

  By the way, knitting machines for circular knitted socks have evolved remarkably, and if knitting is performed as specified, knitting can be performed entirely by computer control, and socks are completely manufactured using the automatic knitting machine. Attempts have been made to automate.

  If the toe stitching sewing machine is arranged next to the knitting machine and the knitted sock taken out from the cylinder of the knitting machine can be turned over on the spot and fed into the toe stitching sewing machine, the sock manufacturing can be fully automated. If full automation is realized, the wasteful time and labor spent between the knitting, turning over, and toe stitching processes can be reduced, and sock productivity is dramatically improved. In addition, the transfer line between processes is reduced to the minimum, and the installation space of the production line can be greatly reduced.

Therefore, in the following Patent Document 1, the sock after knitting is sucked with a vacuum pipe and turned over, and then the loop of the toe opening is moved from the knitting needle to the needle, and the moving table group to which the transfer needle is attached is divided into two rows. A tiptoe sewing method and a tiptoe sewing device have been proposed in which the edges of the toe openings are overlapped by moving them side by side, and then stitched with a sewing machine.
JP 2002-28386 A

  However, the conventional method and apparatus including the technique of Patent Document 1 has a big problem that hinders full automation of sock manufacturing. The difficulty is that according to the conventional apparatus, the socks are bent, and the socks cannot be turned over stably by the machine.

  As one of the methods conventionally considered for turning over a knitted sock, as described in the above-mentioned Patent Document 1, a sock in which a loop of a toe side opening is supported by a knitting needle is placed on a cylinder of a knitting machine. There is a method of reversing by sucking with the moved vacuum pipe. Also, as another method of turning inside out, it has been tried to invert the whole by pushing it into the toe opening side of the sock with a cylinder or the like arranged in the cylinder of the knitting machine. However, these methods and apparatuses have been described above. Prevention of raw breakage and smooth turning over cannot be realized.

  In a normal knitting machine, the cylinder and the inner cylinder arranged inside the cylinder do not rotate in synchronization. Since the cylinder rotates and the knitted part of the sock is taken into the non-rotating middle cylinder, the sock is easily twisted during the knitting process, and is easily broken.

  The above-mentioned raw folds are subject to claims in the case of plain fabrics. Also, if the socks twisted during knitting are turned over by the above method without untwisting, the inside-out operation may be hindered or the inside-out may be incomplete, leading to line stoppage or product failure.

  Therefore, it is desirable to eliminate raw folding and to ensure that the knitted socks can be turned over while being put out of the knitting machine and sent to the toe stitching process, but there is no turning device that can meet these two requirements. As a result, full automation of sock production has not been realized.

  When taking out the knitted socks from the knitting machine, the socks can be completely automated if they can be turned over smoothly and reliably without being bent, and fed into the toe stitching sewing machine. An object of the present invention is to provide a sock reversing device that meets such a demand.

In order to solve the above-described problems, the present invention provides an apparatus for turning a knitted circular sock out while taking it out from a cylinder of a knitting machine. The reversing device is arranged inside the cylinder of the knitting machine and takes the knitted portion of the sock into the inside, the actuator for raising and lowering the reversing cylinder, and the reversing cylinder rotating in synchronization with the rotation of the cylinder of the knitting machine A synchronization mechanism to be moved, an outer cylinder to be moved onto the cylinder of the knitting machine, a suction cylinder provided inside the outer cylinder so as to be movable up and down, and an airflow generation source for generating an airflow between the outer cylinder and the suction cylinder. And
After the outer cylinder and the suction cylinder move onto the cylinder of the knitting machine, the inside-out cylinder starts to rise, and this inside-out cylinder enters the front side of the sock where the toe opening is held by the knitting machine while turning the sock over. Ascending, sucking up the socks with the air flow generated between the outer cylinder and the suction cylinder at the same time, and after the reversing cylinder reaches the rising end point, the suction cylinder is lowered to a position where it fits inside the reversing cylinder, Next, the inside of the inverted tube is lowered and removed from the sock while sucking is continued, and the sock that is turned over is delivered to the sucking tube.

  The inside-out cylinder is preferably one whose tip is cut obliquely, or one which is provided with an opening on the outer periphery of the lower part through which foreign matter that has entered inside can be extracted.

  In addition, the mechanism for rotating the inside-out cylinder in synchronization with the cylinder of the knitting machine is configured by providing a torque transmitting portion that transmits the rotation of the cylinder to the inside-out cylinder on the outer periphery of the inside-back cylinder supported rotatably and the inner circumference of the cylinder of the knitting machine. Are preferred.

  The sock inverting device of the present invention rotates the inside-out cylinder arranged in the cylinder of the knitting machine in synchronization with the rotation of the cylinder of the knitting machine, and takes in the knitted portion of the sock into the inside of the inside-up cylinder, so that the sock twists No folds occur in the knitted socks.

  In addition, when the toe side opening is held by the knitting needle of the knitting machine, the inside-up cylinder is raised and the sock without twisting is pushed up and inverted by the inside-up cylinder, so that the inside of the sock is turned over smoothly and reliably. The

  This smooth and accurate inversion is achieved by effectively contributing to sucking up socks with airflow by generating an airflow between the outer cylinder and the suction cylinder that is moved above the cylinder when raising the inverted cylinder Is done. That is, the auxiliary sucking force acts in the direction of pulling away the untwisted sock from the tip edge of the inside-out tube, so that the force with which the tip edge of the inside-up tube comes into contact with the sock is weakened and the sock is smoothly reversed.

  Next, the socks that have been turned inside out are loosely fitted on the outer periphery of the inside-out cylinder, and cannot be moved toward the toe stitching sewing machine as it is. As a countermeasure against this, in the present invention, the sucking cylinder is lowered to enter the inside of the inside-out cylinder while the sock is being sucked up, and then the inside-out cylinder is lowered to pass the sock that is turned over to the sucking cylinder. . The sucking cylinder can be returned to the standby point together with the outer cylinder, and the transition to the toe suture sewing machine is possible by arranging the toe suture sewing machine at the standby point.

  In the case where the tip of the inside-out cylinder is cut obliquely, the contact area of the inside-out cylinder with respect to the socks gradually expands, so that the socks are more easily reversed.

  In addition, if the inside of the inside of the inverted tube is provided with an opening, the bottom of the sock that is taken into the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside Can be taken out from.

  In addition, a synchronous transmission mechanism that has a torque transmission part that transmits the rotation of the cylinder to the inside of the cylinder of the knitting machine on the outer periphery of the inside of the inside of the inside of the inverted cylinder that is rotatably supported is configured exclusively for rotating the inside of the inside of the cylinder. A rotary drive mechanism is not required, and the apparatus can be simplified and the cost can be reduced.

  An embodiment of a sock reversing device according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the sock inverting device 1 includes an inverting cylinder 2 disposed in a cylinder 21 of a knitting machine 20, an actuator 3 that moves the inverting cylinder 2 up and down, and a cylinder inverting the inverting cylinder 2 during sock knitting. A synchronous rotation mechanism 4 that rotates in synchronization with the rotation of 21, an outer cylinder 5 that is moved from the position of a toe stitching sewing machine (not shown) onto the cylinder 21 of the knitting machine, and a suction cylinder 6 that is provided inside the outer cylinder; The actuator 7 raises and lowers the suction cylinder, and an airflow generation source (blower) 8 that generates an airflow for suction between the outer cylinder 5 and the suction cylinder 6. The actuators 3 and 7 may be pneumatic cylinders or the like. The actuator 3 is supported by a fixing member 13 shown in FIG.

  A knitting machine for knitting circular socks is a computer-controlled knitting machine, and the inner cylinder does not rotate synchronously with the rotation of the cylinder 21 during knitting. The sock flipping device 1 of the present invention has the inside of a cylinder 21 of this knitting machine, and the inside of the sock knitting machine 2 is rotated in synchronism with the rotation of the cylinder 21 during knitting of the sock. The part is taken into the inside of the inverted tube 2.

  The inside-out cylinder 2 is formed of a round pipe (material is not particularly limited), and the tip (upper end) is obliquely cut in order to improve the insertability and fit into the socks, and the contact area with the socks Is gradually spreading. The cut angle at the tip of the inside-out cylinder 2 is approximately 45 ° in the figure, but is not limited to this angle. A torque transmission member 4b, which will be described later, is provided on the outer periphery of the inverted tube 2, and an opening 9 is provided on the outer periphery of the lower portion of the inverted tube 2 for taking out foreign matters and the like that have entered the inside of the tube.

  The synchronous rotation mechanism 4 interposes a rotary joint 4 a between the inside-out cylinder 2 and the actuator 3 and rotatably supports the inside-out cylinder 2 via the actuator 3, and via a torque transmission member 4 b provided on the outer periphery of the inside-out cylinder 2. A cylinder 21 is provided that transmits the rotation of the cylinder 21 to the inside cylinder 2 and rotates the inside cylinder 2 synchronously with the cylinder 21. The torque transmission member 4b may contact the inner surface of the cylinder 21 with an appropriate pressure and generate a friction force between the torque transmission member 4b and the cylinder 21 to transmit rotation. The frictional force generated between the two cylinders becomes the resistance of movement of the inside-out cylinder 2 and the friction surface wears. Therefore, the pin and the vertical groove are not formed on the outer circumference of the inside-out cylinder 2 and the inner surface of the cylinder 21. Correspondingly provided, a pin that engages the vertical groove so as to be movable up and down and transmits torque for synchronous rotation is preferable.

  The outer cylinder 5 is supported by a revolving transfer mechanism 30 (only a moving holder of the mechanism is shown) and is moved between an installation point of a toe stitching sewing machine (not shown) and the cylinder 21 of the knitting machine.

  The suction cylinder 6 is disposed inside the outer cylinder 5 so as to be movable up and down. As shown in FIG. 7, a middle cylinder 10 and an annular perforated plate 11 are provided inside the outer cylinder 5, and a flanged flange 6 a formed at the upper end of the suction cylinder 6 is slid between the middle cylinder 10 and the outer cylinder 5. The sucking cylinder 6 is arranged inside the outer cylinder 5 by being inserted as possible.

  The suction cylinder 6 has an actuator 7 connected to the flange 6 a with a hole via a connecting rod 12 and can be moved up and down by the actuator 7.

  Instead of the knitting needle 22 of the knitting machine 20, the transfer mechanism 30 is provided with a transfer needle 31 that holds the loop of the opening edge on the toe a side of the sock A. The illustrated transfer needle 31 is attached to a movable table (not shown) divided into a plurality of parts in the circumferential direction, and the toe side opening edge of the sock that is held by moving each movable table so as to be arranged in two rows is formed by a sewing machine. It can be overlapped so that it can be sutured.

  The transfer mechanism 30 has a function of lowering the suction cylinder 6 including the outer cylinder 5 and a function of lowering the transfer needle 31. Examples of the transfer mechanism 30 and the transfer needle 31 employed in the transfer mechanism 30 are those already disclosed in the above-mentioned Patent Document 1 and Japanese Patent Application Laid-Open No. 2001-316959. The detailed explanation of is omitted.

  In the sock reversing device 1 of the present invention configured as described above, when the knitting by the knitting machine 20 is completed, the transfer mechanism 30 is activated and the outer cylinder 5, the suction cylinder 6, the middle cylinder 10, and the transfer needle 31 are located in the cylinder 21. It moves upward and the inside-out cylinder 2 starts to rise. The inside-out cylinder 2 is set in a direction corresponding to the heel b of the sock A knitted on the obtuse corner side of the cut surface at the tip.

  The loop on the toe a side of the knitted sock A is supported by a knitting needle 22 of a knitting machine arranged on a circle, and the tip of the inverted tube 2 enters the front side of the sock A. The inside-out cylinder 2 continues to rise, and pushes up the front side of the sock A taken in the inside as shown in FIGS. 2 and 6 and turns it over. At this time, the air flow generation source (blower) 8 is activated to generate an upward air flow between the outer cylinder 5 and the sucking cylinder 6, and this air current assists (sucking up) the socks inside out.

  The sock A taken in the inside-out cylinder 2 is not twisted and is not bent because the inside-out cylinder 2 rotates in synchronism with the rotation of the cylinder of the knitting machine during knitting. Further, since the tip of the inside-out cylinder 2 is cut obliquely, the inside-out cylinder 2 is easily inserted into the sock A, and the heel b is also easily returned. Furthermore, the force with which the tip edge of the inside-out cylinder 2 comes into contact with the sock A is weakened by the auxiliary sucking by the air flow, so that the inversion of the sock proceeds smoothly and accurately.

  When the reverse cylinder 2 is raised to the upper limit and the sock A is completely reversed, the sucking cylinder 6 is lowered as shown in FIG. 3, and when the sucking cylinder 6 is finished descending, the reverse cylinder 2 is also lowered. As a result, the sock A that has been completely turned over and loosely fitted onto the outer periphery of the inside-out cylinder 2 is transferred to the outer periphery of the suction cylinder 6. At the time of delivery, the transfer needle 31 is lowered to hold the toe side opening edge of the sock by the transfer needle 31 and to release the holding of the toe side opening edge by the knitting needle 22. As shown in FIG. 4, when the sucking cylinder 6 descends to the lower limit and receives the socks A, and the reverse cylinder 2 also returns to the lower limit, the socks are turned over and delivered. Thereafter, the transfer mechanism 30 moves the sock A received together with the outer cylinder 5, the suction cylinder 6, the middle cylinder 10, and the transfer needle 31 to the position of the toe stitching sewing machine.

  The transfer needle 31 is arranged at a position surrounding the knitting needle 22 of the knitting machine 20 until the delivery of the socks from the inside-out cylinder 2 to the suction cylinder 6 is completed. Instead of the knitting needle 22, the transfer needle 31 holding the sock toe side loop is moved using a moving table drive mechanism (not shown), and the transfer needles 31 are arranged in two rows and approached so that the opening edge of the toe of the sock Overlapping. In this way, the toe side stitching portion is positioned by the transfer needle 31, and the toe side opening edge can be sewn accurately by the toe stitch sewing machine.

  The sock A in which the toe side opening is sewn is a finished product through a turn-up process. It is preferable that the turn-up is performed using a device such as the one filed separately by the applicant of the present invention (filed on the same day as the present application). However, the socks A are pulled down from the suction cylinder 6 after the toe stitching and turned up at another place. It is also possible to perform. The suction cylinder 6 shown in FIG. 7 has a preferable structure in which the tip is cut obliquely in the same manner as the inside-out cylinder 2, but the tip may be cut as necessary.

The perspective view which shows the sock inversion device of this invention The perspective view which shows the middle of the raising of the reverse cylinder of the apparatus of FIG. The perspective view which shows the rising completion state of the inside-out cylinder of the apparatus of FIG. The perspective view which shows the completion state of inversion and delivery by the apparatus of FIG. The perspective view which shows the transfer state of the socks after completion of delivery Cross-sectional view showing the sock reversing process with the reversing cylinder in an easy-to-understand manner Sectional drawing showing a specific example of a suction cylinder

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socks inversion device 2 Inversion cylinder 3 Actuator 4 Synchronous rotation mechanism 4a Rotary joint 4b Torque transmission member 5 Outer cylinder 6 Suction cylinder 6a Hole flange 7 Actuator 8 Air flow generation source 9 Opening 10 Middle cylinder 11 Porous plate 12 Connecting rod 13 Fixing member 20 Knitting Machine 21 Cylinder 22 Knitting Needle 30 Transfer Mechanism 31 Transfer Needle A Socks a Toe b 踵

Claims (4)

An apparatus for turning a knitted circular sock out of the cylinder of the knitting machine and turning it inside out, and placing it inside the cylinder of the knitting machine and taking the knitted part of the sock inside, and an actuator for raising and lowering the inside of the inside A synchronous rotation mechanism that rotates the inside-out cylinder in synchronization with the rotation of the cylinder of the knitting machine, an outer cylinder that moves on the cylinder of the knitting machine, a suction cylinder that can be moved up and down inside the outer cylinder, and the outer cylinder And an air flow source for generating an air flow between the suction tube and the suction cylinder,
After the outer cylinder and the suction cylinder move onto the cylinder of the knitting machine, the inside-out cylinder starts to rise, and this inside-out cylinder enters the front side of the sock where the toe opening is held by the knitting machine while turning the sock over. At the same time, the sock is sucked up by the air flow generated between the outer cylinder and the suction cylinder, and after the reversing cylinder reaches the rising end point, the suction cylinder continues to be A sock reversing device configured to descend to a position that fits inside, and then the sock tube is lowered, and the socks that are turned inside out are delivered to the sucking tube.   The sock reversing device according to claim 1, wherein a tip of the reversing tube is cut obliquely.   The sock-inversion device according to claim 1 or 2, wherein an opening is provided on the lower outer periphery of the inside-out tube so as to allow the sock and foreign matter that have entered the inside to be extracted.   The sock according to any one of claims 1 to 3, wherein the synchronous rotation mechanism is configured by providing a torque transmitting portion that transmits rotation of the cylinder to the inside cylinder in an outer periphery of the inside cylinder that is rotatably supported and an inner circumference of the cylinder of the knitting machine. Flip device.

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