JPH0928954A - Welt part opening device in stocking cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely automate (operation without operator) the sewing process of panty house by opening a welt part of a stocking cloth sucked and transported through a pipe by utilizing the suction sream to constitute the opening part such that the opening part is automatically delivered to an attaching arm. SOLUTION: Since a suction sream generated in a suction hose 11 acts up to the extending end of a supply pipe D, when a stocking cloth S is supplied from a welt part W side at the extending end of the supply pipe D, the cloth S is sucked and transported the pipe C. When, then, a sensor 45 detects the welt W, a pinching means 41 is operated to pinch the cloth S, while the attraction is doubled to prolong the cloth S and place the welt part W in a pipe B. Under such condition, the pipe C is moved rightward by the drive of a motor M to turn up outward the welt part W put into a projection part 14a with the suction stream and turn inside out the welt part W for covering the outer peripheral edge of the pipe B. Thereafter, the welt part W is delivered onto an attaching arm 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welt opening device for stocking cloth, and more particularly to a welt for stocking cloth on a mounting arm for automatically mounting stocking cloth on a biting member of a crotch sewing machine. The present invention relates to a welt opening device for stocking cloth that is delivered in a state in which the parts are opened.

[0002]

2. Description of the Related Art To manufacture panty hose,
The inner crotch part, which is the panty part, is sewn with the crotch sewing machine by aligning the welted parts of the two tubular stocking materials knitted from the raw yarn with the left and right, and then the toe parts of this stocking material are sewn with the toe sewing machine. By doing so, one pantyhose is obtained. Then, the pantyhose that has completed this sewing operation becomes a product through various working processes such as dyeing, set finishing, and packaging.

As mentioned above, the pantyhose is manufactured through the two steps of the rise sewing and the toe sewing.
As a sewing machine for performing both of these processes, an automatic crotch sewing machine (Japanese Patent Publication No. 52-8734) and an automatic toe sewing machine (Japanese Patent Publication No. 55-37272) developed by the present applicant have been widely put into practical use. There is.

In addition, by connecting these two sewing machines to improve the efficiency and labor saving of the sewing process of panty hose, the consistent sewing method and device (Japanese Patent Publication No. 61-21430) and the first preparatory work for the rise sewing are performed. An apparatus (Japanese Patent Laid-Open No. 1-259892) for automatically attaching stocking cloth to a biting member of a certain crotch sewing machine is also known.

[0005]

As described above, the consistent sewing method and apparatus of Japanese Examined Patent Publication No. 61-21430 provide the excellent feature that two operators are enough for one worker until then. With the automatic mounting device of Kaihei 1-259892, the heavy labor of mounting the welt part of the stocking fabric by spreading it from inside with both hands is eliminated.

[0006] However, Japanese Patent Application Laid-Open No. 1-25989 discloses the method.
Even with the No. 2 automatic mounting device, auxiliary work by workers is still necessary. This is difficult to handle with a machine of stocking material having a soft property, especially it is extremely difficult to mechanically handle surely open the welt part of the stocking material without error in preparation for the mounting work, This is hindering the complete automation (unmanned operation) of the pantyhose sewing process.

Therefore, an object of the present invention is to provide a stocking material welt opening device for surely opening the wetting portion of stocking cloth that has been sucked and conveyed through a pipe by utilizing the suction flow. By connecting this welt opening device to the above-mentioned conventional mounting device, it is an object to enable the pantyhose sewing process to be completely automated (unmanned).

[0008]

In order to solve the above problems, the present invention has a pipe A which is connected to a suction source through a suction hose, and a pipe A which is coaxially arranged in the pipe A. A pipe B and a pipe C in which one end faces the inside of the pipe B and the other end communicates with a stocking fabric supply pipe.
And the pipes A and B and the pipe C.
Is supported so as to be capable of reciprocating along the same axis, and the pipe A
A lid having a spherical conical protrusion whose tip is formed in a spherical shape is openably and closably attached to the open end of the pipe, and the side where the lid is located on the outer peripheral surface of the pipe B is in contact with the inner peripheral surface of the pipe A. A plurality of fins having different lengths are radially provided in the pipe C, and at a substantially central position in the length direction of the pipe C, the stocking material sucked and conveyed into the pipe C is temporarily held and held. This is a configuration in which members are provided.

[0009]

The stocking material that has been sucked and conveyed into the pipe C through the supply pipe with the welt portion first is temporarily held by the holding member, and then the suction force of the intake flow is increased to increase the stocking. The dough is completely stretched in the pipe C, and its welt portion is exposed from the end of the pipe C into the pipe B.

After that, by advancing the pipe C in the direction in which the lid is located, the welt portion exposed in the pipe B engages with the protrusion formed on the lid from the inside thereof.
The action of the intake air flow from the pipe B to the pipe A causes the welt portion to be turned up outward, and as a result, the outer peripheral edge of the end portion of the pipe B is covered upside down. As a result, the welt portion is completely opened on the pipe B.

In this way, when the welt portion is opened while covering the pipe B, the intake flow is stopped next, and the lid that has closed one end of the pipe A is also opened.

After that, the holding and holding of the stocking material by the holding member is released, and the pipes A and B are integrally advanced so that the mounting arm is inserted into the pipe B. Delivered.

In this way, when the welt portion is transferred to the mounting arm, the pipes A, B and C retreat to their original positions, and the lid is closed during that time to close the pipe A to cool the pipe A for one cycle. The opening work of the welt part and the delivery work to the mounting arm are completed.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the pipes A and B formed in a double pipe structure and the pipe C having one end facing inside the pipe B and the other end connected to the supply pipe D of the stocking cloth S are the same as each other. In the state of communicating in a straight line on the axis,
It is arranged along the longitudinal direction of the frame 10.

The pipe A is connected to an appropriate suction source (not shown) via a suction hose 11 and is horizontally supported by two support brackets 12 and 13, and is supported by one support bracket 12. One end of the pipe A is closed, and the lid 14 is openably and closably attached to the other end that is an open end.

As shown in FIG. 1, the lid 14 has a position where the opening end of the pipe A is closed (solid line position) and opened (chain line position) about a shaft 15 by appropriate driving means.
A conical projection 14a having a spherical tip is formed on the surface facing the pipe A while being mounted so as to be reciprocally rotatable between them.

One end of the pipe B is carried by the support bracket 12, and the pipe B is coaxially arranged in the pipe A so as to be located between the inner peripheral surface of the pipe A and the outer peripheral surface of the pipe B. A passage 16 through which the intake air flows is formed. On the outer peripheral surface of the other end of the pipe B, a plurality of fins 17 standing upright so as to be in contact with the inner peripheral surface of the pipe A are provided radially, and the fins 17 form the passage 16 for the intake flow. Finely divide as shown in 2.

As shown in FIG. 3, the length of the fin 17 is such that the fin 17a located on the suction hose 11 side of the pipe A is formed to have the shortest length, and the fins 17a are sequentially separated from the suction hose 11. The fins 17 are formed to be long and are located on the farthest side (opposite side).
Form b as the longest.

As described above, by finely dividing the passage 16 formed between the pipe A and the pipe B by the plurality of fins 17 having different lengths, the intake air flow acting on the passage 16 via the suction hose 11 is obtained. As shown by the arrows in FIG. 2 and FIG. 3, uniformly acts in each of the partitioned passages 16 in the entire circumference of the pipe, and as a result, the tubular welt portion W also moves in the same direction, that is, in the same direction. The welted part spreads outward so that the flower bud blooms, and is sucked while opening.

In this embodiment, the number of fins 17 is 8 to 12 (10 in the figure), the fins 17 are arranged at equal intervals on the circumference, and the shortest fin 17a and the longest fin 17b are arranged. By setting the length to about 1: 2 and arranging the end of the fin 17b on the center line 11a of the attachment hole of the suction hose 11 provided in the pipe A (see FIG. 3), the fin 17b is partitioned. The intake air flow acting on each of the passages 16 is most effectively equalized.

The two support brackets 12, 13 carrying the pipes A, B are fixed at their lower ends to a movable base 20, and the movable base 20 is fixed to the frame 1.
0 is installed on the rail 21 arranged on the upper surface of the 0, and the air cylinder 22 and the movable base 2 provided in the frame 10 are installed.
0 is connected, and the movable base 20 is moved left and right along the rail 21 by expansion and contraction of the piston of the air cylinder 22, so that the pipes A and B are reciprocally moved in the same direction, that is, along the axial direction of the pipe. It can be done.

As shown in FIG. 1, the pipe C has two support brackets 31 with one end thereof facing the inside of the pipe B and the other end fitted into the supply pipe D of the stocking cloth S. , 32 horizontally supported by
On the other hand, the end of the supply pipe D is also horizontally supported by the support bracket 33 fixed to the frame 10.

Similar to the support brackets 12 and 13 for supporting the pipes A and B, the lower ends of the two support brackets 31 and 32 are movably installed on a rail 34 arranged on the upper surface of the frame 10. A ball screw 36, which is fixed to the movable base 35 and is directly connected to the motor M, is arranged in the frame 10. The movable base 35 is attached to a nut 37 screwed to the ball screw 36.
Is connected to the movable base 35 by the forward and reverse rotation drive of the motor M.
Is moved leftward and rightward along the rails 34 to reciprocate the pipe C in the axial direction.

Of the two support brackets 31, 32, one support bracket 31 is provided with a stocking cloth holding member 40 for temporarily holding and holding the stocking cloth S sucked and conveyed into the pipe C. Has been.

The holding member 40, as shown in FIG.
It is composed of a plurality of (four in this embodiment) clamps 41, and the clamps 41 have their bases pivotally attached to the pins 42 provided on the support brackets 31 and their extending ends directed toward the center of the pipe C. Notch 4 formed by bending the pipe C
Show within 3.

Further, a pin 42 for pivotally mounting the holding tool 41 is connected to an appropriate turning member (not shown), and the turning action of the pin 42 positions the holding tool 41 at the notch 43 of the pipe C. The open / close position (solid line in FIG. 1) and the closed position (chain line in FIG. 1) at which the clamps 41 come into contact with each other at the center of the pipe C can be opened and closed freely.

In FIG. 1, reference numeral 45 is a sensor for detecting the stocking material S that has been sucked and conveyed into the pipe C, and reference numeral 46 is for detecting the welt end W of the stocking material S that is turned up on the pipe B. It is a sensor that does. Reference numeral 47 is, for example, Japanese Patent Laid-Open No. 1-259889.
No. 2, which is a mounting arm in the stocking cloth automatic mounting apparatus, and the welt portion W of the stocking cloth S delivered to the mounting arm 47 is sewn up from the pipe B by the operation of the mounting arm 47. It will be automatically mounted on the bite member of the machine.

The welt opening device of the present invention is constructed as described above, and its operation will be described below with reference to FIGS. 1 and 4 to 6.

In FIG. 1, the intake air flow generated in the suction hose 11 first passes through the passage 16 between the pipes A and B, then the pipes B and C, and finally the extending end of the supply pipe D (see FIG. (Not shown). Therefore, if the stocking material S is supplied from the welt portion W side at the extended end of the supply pipe D, the stocking material S is transferred from the supply pipe D to the pipe C by the action of the intake flow. Intake will be carried.

At the extending end of the supply pipe D, a device for delivering one piece of stocking cloth S to its welt portion W first, for example, an invention previously filed by the applicant (Japanese Patent Laid-Open No. No. 272801) is connected to the extended end of the supply pipe D of the device of the present invention, so that the stocking material supply operation is automatically performed.

That is, the apparatus of the above-mentioned Japanese Patent Laid-Open No. 1-272801 picks up one stocking cloth from a large number of stocking cloths stored at random, and sends it out with either of the welt and toe parts at the head. In the case of the present embodiment, by connecting the welt portion so as to be delivered to the extended end of the supply pipe D first, the stocking material supply operation to the device of the present invention is performed automatically. Will be done.

Thus, the welt portion W is provided in the supply pipe D.
The stocking material S supplied first is sucked and conveyed from the supply pipe D to the pipe C by the action of the suction flow. Then, during the transportation in the pipe C, the sensor 45 detects the welt W of the stocking cloth S.
When the detection signal is detected, the holding tool 41 of the holding member 40 is moved to the closed position to hold the stocking material S being conveyed.

FIG. 4 shows a state in which the stocking material S is held by the holding tool 41. That is, the stocking cloth S sandwiched in the pipe C is just like a carp streamer flying in the wind and swimming in the air due to the sandwiching at the position on the center line of the pipe C and the action of the intake air flow. It is in a good state.

Since the stocking material has such a sandwiched state, the welt portion W side also has a floating state on the center line thereof in the pipe C, which facilitates the next work of opening the welt portion.

Further, as shown in FIG. 4, the welt portion W side of the stocking cloth S sandwiched in the pipe C is pipe C
Set it so that it is placed near the edge of. This setting is
For example, by incorporating a timer in the sensor 45 and adjusting the set time of the timer according to the type of stocking material and the transport speed by the intake flow to control the timing of operating the sandwiching tool 41, the welt portion W is set in the pipe. It can be placed at any position.

As described above, when the stocking material S is clamped by the clamps 41 in the pipe C, the suction force of the intake air flow is then doubled by inverter control or the like to act on the stocking material S by the suction force. Then, the welt portion W is further extended to face the inside of the pipe B from the end of the pipe C (indicated by a chain line in FIG. 4).

Then, by driving the motor M to advance the pipe C in the direction in which the lid 14 provided at the end of the pipe A is located, the welt portion W exposed in the pipe B is shown in FIG.
As shown in FIG. 3, the welt portion W that has entered the protrusion 14a formed in the lid 14 from the inside thereof and has also entered the protrusion 14a by the action of the intake flow flowing from the pipe B toward the pipe A, that is, the passage 16. Is flipped outward, and as a result, it is put on the outer peripheral edge of the end portion of the pipe B in an inverted shape (indicated by a chain line in FIG. 5). As a result, the welt portion W is completely opened on the pipe B.

When the welt portion W is turned up by the intake air flow, the passage 16 is finely divided by a plurality of fins 17 provided on the pipe B and having different lengths.
By equalizing the flow of intake air acting on each of the divided passages 16, the operation of flipping up the welt portion W to the outside can be performed without any trouble without biasing to one side in the pipe.

As described above, in the present invention, the welt portion W is arranged in a floating state on the center line of the pipe,
The floating portion W of the floating state is used as the protrusion 14a of the lid 14.
The welt portion W is flipped outward (opening) by making it enter and making the intake air flow evenly act on each of the passages 16 partitioned by the fins 17.
The operation can be surely performed.

As described above, when the welt portion W of the stocking cloth S is put on the outer peripheral edge of the end portion of the pipe B in an inverted state, the welt portion is detected by the sensor 46.

When the welt portion W is detected by the sensor 46, the detection signal thereof stops the forward movement of the pipe C and the action of the intake air flow which have continued until then, and then the lid which closed the pipe A. 14 is also opened.

Further, when the sandwiching of the stocking cloth S by the sandwiching tool 41 is also released, the pipes A and B are integrally advanced by the operation of the air cylinder 22, and the mounting arm 47 at the advanced position is piped. When the welt portion W is turned up into the pipe B (state shown in FIG. 6), the welt portion W turned up on the pipe B is gradually turned over and delivered to the mounting arm 47.

In this way, when the welt portion W is transferred onto the mounting arm 47, the pipes A, B and C are retracted and returned to their original positions, during which the lid 14 is also closed to close the pipe A. 1 cycle welt part
And the delivery work to the mounting arm 47 is completed.

On the other hand, the welt portion W, ie, the stocking cloth S, delivered to the mounting arm 47 is then mounted on the biting member of the crotch sewing machine by the action of the mounting arm 47. Is the above-mentioned JP-A 1-2
Since it has already been disclosed in Japanese Patent No. 59892, description thereof will be omitted.

[0046]

As described above, according to the present invention, the welt portion of the stocking material which has been suctioned and conveyed through the pipe is reliably opened by utilizing the suction flow, and the opening portion is automatically set on the mounting arm. By completely connecting the apparatus of the present invention to a conventional automatic mounting apparatus, the pantyhose sewing process can be completely automated (unmanned).

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing the entire configuration of a welt opening device according to the present invention.

2 is a front view showing the relationship between pipes A and B. FIG.

FIG. 3 is a vertical sectional side view of the same.

FIG. 4 is a vertical cross-sectional side view showing a state where the stocking material is held by the holding member.

FIG. 5 is a vertical cross-sectional side view showing a state in which the welt portion has entered the protrusion of the lid.

FIG. 6 is a vertical cross-sectional side view showing a state in which a welt portion (stocking cloth) is delivered to a mounting arm.

[Explanation of symbols]

 A, B, C Pipe D Supply pipe 14 Lid 14, a Projection 17 Fin 40 Clamping member 41 Clamping tool

Claims (1)

[Claims] 1. A pipe A properly connected to a suction source via a suction hose, a pipe B coaxially arranged in the pipe A, one end of which faces the pipe B, and the other end of which is stocking cloth. And a pipe C which is communicated with the supply pipe, and supports the pipes A and B and the pipe C so as to be able to reciprocate along the same axis line, and the tip end of the pipe A is formed into a spherical surface. A lid having a conical projection is attached so as to be openable and closable, and a plurality of fins having different lengths are radially provided on the outer peripheral surface of the pipe B on the side where the lid is located so as to contact the inner peripheral surface of the pipe A. A stocking material is provided at a substantially central position in the length direction of the pipe C, and a holding member for temporarily holding and holding the stocking material sucked and conveyed into the pipe C is provided. Welt opening device.