JPH0245220Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to an aligning device used to align the orientation of a long knitted fabric such as panty stitching.

(Prior Art) Thin knitted fabrics such as pantyhose fabrics are widely transported using pneumatic transport pipes provided between processes. In this transport method, an air flow is generated in a transport pipe using a compressor or a suction machine, and the knitted fabric is transported by this air flow. According to this conveyance method, the knitted fabric is compressed in the conveyance direction due to conduit resistance, etc., and therefore, the knitted fabric sent to the end of the conveyance path is stretched in the same direction. It is necessary to provide an alignment device, and various types of such alignment devices have been developed (for example, Japanese Patent Application Laid-Open No. 55-31712,
(Jitko No. 52-21839).

(Problems to be Solved by the Invention) However, the conventional pulling device described above completely stretches the long knitted fabric, and generally has a problem in that the mechanism is complicated and expensive. It is an object of the present invention to solve the problems of the conventional devices described above, and to provide an alignment device that is structurally simple and capable of realizing alignment in a semi-straight extended state.

(Means for Solving the Problems) In order to solve the above problems, the present invention has the following structure. That is, the aligning device for socks, etc. according to the present invention has a first tube for conveying knitted fabrics such as socks at one end of a aligning tube having a bottom plate that can be opened and closed.
A suction port is provided, and the other end is provided with a knitted fabric supply port and a second suction port for straight stretching of the knitted fabric,
A suction device is connected to these suction ports via a valve that can switch the suction direction of air, and
In the vicinity of the suction port, there is a perforated flap whose upper end is pivotally attached to the ceiling surface of the alignment tube and whose lower end is placed on the bottom plate and can be rotated up and down. It is characterized in that the knitted fabric supply port is provided with a check valve that is opened only in the knitted fabric supply direction.

(Function) The knitted fabric is supplied into the pulling tube from the knitted fabric supply port in the same direction by suction from the first suction port, and the front end of the knitted fabric is inserted between the perforated flap and the bottom plate. Next, the perforated flap rotates downward due to suction from the second suction port, and its lower end presses the front end of the knitted fabric against the bottom plate, so that the front end of the knitted fabric is held between the bottom plate and the rear of the knitted fabric. is pulled backwards. By continuing suction in this state, the knitted fabric is stretched in the same direction.

(Example) The alignment device 1 shown in FIGS. 1 and 2 is an example of the alignment device according to the present invention, and includes an alignment tube 2 and a side surface of the alignment tube 2. The opening/closing device 3 is provided at the

The alignment tube 2 is a box-shaped tube with a rectangular cross section that is elongated from front to back, and its ceiling portion 5 has a rear portion 5a higher than a front portion 5b, and an inclined portion 5c in the middle portion.
It is becoming. The ceiling part 5 and both side parts 6, 6 are integral, but the bottom part is formed as a separate bottom plate 7 to which one side part is pivoted 7a, and can be opened downward by an opening/closing device 3 described later. I'm starting to be able to do it.

A suction port 10a of the first duct 10 is provided at the front end of the alignment tube 2. On the other hand, a knitted fabric transport pipe 11 and a second duct 12 are connected to the rear end,
The supply port 11a and the suction port 12a are open vertically. In the first suction port 10a, a stopper member 14 having a large number of holes and having air permeability is erected in the lower half thereof. The second suction port 12a is
A perforated plate 1 made of a porous material similar to the stopper material 14
It is blocked by 5. In addition, the supply hole 11a is connected to a rotatable check valve 16 which is made up of a flat plate 16b that is pivotally supported by a pin 16a installed horizontally in the upper part of the alignment pipe 2.
is provided. This check valve 16 is connected to the transport pipe 1
Only when the pressure in the alignment tube 1 is higher than the pressure in the alignment tube 2, the alignment tube 2 opens inward. Note that the supply port 11a and the second suction port 12a
may be provided upside down, or may be provided side by side depending on the cross-sectional shape of the alignment tube.

Further, a perforated flap 18 is pivotally attached to the front portion 5b of the ceiling portion of the straightening tube 2. perforated flap 1
8 is provided with its lower part facing forward, and its tip is normally placed on the bottom plate 7 near the first suction port 10a. The angle of inclination is preferably around 30°. Also,
When the perforated flap 18 floats near the rotation center axis 18a of the perforated flap 18 due to the action of air flow,
A stopper 19 is provided for regulating the amount of floating of the perforated flap 18.

If the inner dimensions of the alignment tube 2 are, for example, 70 mm square, the width of the perforated flap 18 should be about 69 mm, and about 54 through holes of, for example, 5 mmφ may be bored therein.

Next, the opening/closing device 3 includes an air cylinder 21 as a driving source. On the other hand, the bottom plate 7 is
The alignment tube 2 is pivotally attached to the lower end side so as to be able to rotate up and down, and a connecting frame 22 is integrally provided in the opposite direction with the rotation center axis 7a sandwiched therebetween. The base of the air cylinder 21 is pivotally attached to the machine frame, and the piston rod 221a is connected to the tip of the connecting frame 22.

This alignment device 1 is used by being connected as shown in FIG. 3, for example. That is, the first and second suction ducts 10 and 12 are connected to the suction part of the suction blower 30, and the transport pipe 11 is connected to the lower end of the knitting machine 31 for panty stitching. Knitting machine 31
A third duct 32 is disposed at the bottom of the duct 32 and is connected to the first duct 10 via a three-way valve. The flow paths between the first duct 10 and the third duct 32 can be switched by a three-way valve 34. Further, a fourth duct 35 communicating with the outside air is provided in the middle part of the first duct 10. The stop valve 36 of the fourth duct 35 and the stop valve 37 of the second duct 12 are opened and closed in conjunction with each other.

FIG. 3a shows the knitting process. At this time, the third duct 32 is connected to the suction blower 30, so the knitted fabric 40 of pantyhose trousers being knitted by the knitting machine 31 is It is gradually pulled downward.

When the knitted fabric 40 is knitted, the three-way valve 34 is switched as shown in FIG. 3b to connect the first duct 10 to the suction blower 30. At this time, stop valve 3
6 and 37 are closed. Then, the check valve 16 opens due to the pressure difference, and an air flow is generated that flows through the transport pipe 11, the alignment pipe 2, and the first duct 10. The knitted fabric 40 is carried to the front part of the straightening tube 2 by this air flow.
Due to the buoyancy caused by the air flow and the pressing force of the knitted fabric 40,
The perforated flap 18 is raised until it abuts against the stopper 19. In addition, the first suction port 1
Since the stopper material 14 is provided at 0a,
The front end of the knitted fabric 40 hits this stopper material 14 and stops.

When the knitted ivy fabric 40 is conveyed to the straightening pipe 2, the knitting work of the next knitted fabric is started, and at the same time, as shown in FIG.
2 is connected to the blower 30, and the stop valves 36 and 37 are opened. Then, an air flow is generated in the direction opposite to the previous one, from the fourth duct 35 to the suction port 10a of the first duct 10 to the alignment tube 2 to the second duct 12. At this time,
The perforated flap 18 is pressed downward by air pressure, and the tip of the perforated flap 18 and the bottom plate 7
With this, the front end of the knitted fabric 40 is held in place.
In this state, by continuing the suction by the second duct 12, the rear part of the knitted fabric 40 is drawn rearward, and the front part of the knitted fabric 40 is stretched straight.

When the front part of the knitted fabric 40 is sufficiently stretched by performing suction through the second duct 12 for a predetermined period of time, the stop valve 3
Close 6,37. Then, when the air cylinder 21 of the opening/closing device 3 is contracted, the bottom plate 7 opens downward about the central rotation axis 7a, and the knitted fabric 40 is supplied downward (FIG. 3d).

In this way, this pulling device 1 clamps the front end of the knitted fabric 40 between the tip of the perforated flap 18 and the bottom plate 7, and in this state sucks the knitted fabric 40 backward, thereby pulling the knitted fabric 40. The front part is configured to extend straight. By the way, in the manufacturing process of pantyhose socks, the sewing process is generally the next step after the knitting process, and in the sewing process, sewing is started from the belt end of the knitted fabric 40. Therefore, if the knitted fabric is conveyed to the pulling and aligning device 1 so that the belt end becomes the front part, it can be supplied to the next sewing step with the belt end stretched straight and aligned.
This eliminates the need to search for the end of the belt during the sewing process, and also eliminates entanglement between knitted fabrics, allowing subsequent work to be carried out quickly.

This pulling device 1 does not straighten the entire length of the knitted fabric and can leave the rear part of the knitted fabric in a compressed state.
The length of can be shortened. Moreover, since no actuators are required other than the opening/closing device,
It has a simple structure and can be provided at low cost.

In addition, if it is linked with an accumulation device or the like, it can be used for aligning and accumulating knitted fabrics.

(Effects) As is clear from the above explanation, the aligning device according to the present invention can be incorporated into a conventional transport system for socks, etc., has a simple structure, low manufacturing cost, and can be made compact. It has many advantages such as:

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of one example of the alignment device according to the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, and Fig. 3 a, b, c, and d are views of the alignment device. It is an explanatory diagram showing a state of use. DESCRIPTION OF SYMBOLS 1... Aligning device, 2... Aligning pipe, 3... Switching device, 7... Bottom plate, 10, 12, 32, 35...
...Duct, 11...Knitted fabric transport pipe, 10a...First
Suction port, 11a... Supply port, 12a... Second suction port, 16... Check valve, 18... Perforated flap, 2
1... Air cylinder, 30... Suction blower, 31
...Knitting machine.

Claims (1)

[Scope of utility model registration request] A first suction port for transporting knitted fabrics such as socks is provided at one end of the straightening tube, which has a bottom plate that can be opened and closed, and a knitted fabric supply port and a first suction port for straight stretching knitted fabrics are provided at the other end. 2 suction ports, and these suction ports,
A suction device is connected through a valve that can switch the suction direction of air, and near the first suction port, the upper end is pivotally attached to the ceiling surface of the alignment tube, and the lower end is attached to the bottom plate. A vertically rotatable perforated flap is provided so that the lower side approaches the first suction port, and the knitted fabric supply port is provided with a check valve that opens only in the knitted fabric supply direction. A device for aligning socks, etc., characterized by being provided with.