JPH0682035U - Roller ingress detection device - Google Patents

Abstract

(57) [Summary] [Purpose] To accurately and promptly detect that the roller has entered a predetermined stop position. [Structure] A stopper 4, a micro switch 7 provided in the rail 3 on the upstream side thereof, and a swingably provided on the upstream side thereof, which is normally erected forward by its own weight so as to protrude forward from the inside of the rail. It is composed of a passage confirmation lever 8 which turns on the micro switch 7 when it is tilted by R.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for detecting that a roller has entered a predetermined stop position. In particular, check that the hanger roller has entered the predetermined stop position of the scramble rail in the hanger transport device that hangs the hanger with the sewing material on the slant rail and drops and circulates and transports the sewing machine dedicated to each sewing part. It relates to the detecting device.

[0002]

[Prior art]

 As shown in FIG. 1, the hanger transport device includes an inclined rail 1 and a device 2 for pulling up a hanger roller from its lower end to its higher end alternately and endlessly arranged to allow the hanger to drop by its own weight. Meanwhile, the sewing machines dedicated to the sewing parts A, B, ..., N are circulated and transported. By the way, since the work amount of each sewing part is not always constant, for example, two or more sewing parts A may be provided. In that case, the sewn product that has been sewn in the upstream sewing part A needs to pass through the downstream sewing part A as it is. At this time, the scramble rail 3 is a rail on which a hanger for holding the sewn product is placed and directed to the bypass inclined rail 1 ', which can be moved between the position shown by the solid line and the position shown by the dotted line.

As shown in FIGS. 2 and 3, the scramble rail 3 has a stopper 4 which is operated by an air cylinder 5 protruding toward the scramble rail 3 when the scramble is necessary, and a stopper 4 located upstream thereof due to its own weight. A backflow preventing member 6 protruding to a position where it engages with the shaft Ra of the hanger roller, and a microswitch 7 for detecting the hanger roller R are provided next to one side of the scramble rail 3 between them. When the micro switch 7 detects the entry of the hanger roller R, the scramble rail 3 is moved.

[0004]

When the scramble rail 3 needs to be scrambled, the hanger roller R enters in the direction of the arrow in FIG. 2 and hits the stopper 4 protruding toward the scramble rail 3 side to turn on the micro switch 7. After that, the micro switch 7 may be turned off by the reaction of hitting the stopper 4 to turn off, and the micro switch 7 may be turned on again by hitting the backflow prevention member 6 and turned on again. When the backflow prevention member 6 is brought close to the stopper 4 in order to prevent the backflow of the hanger roller R, before the hanger roller R enters the position of the backflow prevention member 6 and the backflow prevention member 6 is lowered by its own weight. It may hit the stopper 4 and retreat behind the backflow prevention member 6. Further, as shown in FIG. 3, since the micro switch 7 is attached only to one side of the scramble rail 3, the micro switch 7 repeatedly turns on and off when the hanger roller R sways and tilts. The detection may be delayed, or the operation may stop without turning on the micro switch 7.

This invention aims at accurately and promptly detecting that the roller has entered a predetermined stop position.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the roller entrance detecting device of the present invention is provided with a stopper, a micro switch provided in the rail on the upstream side of the stopper, and a swingable device provided on the upstream side of the stopper. It consists of a passage confirmation lever that stands up by bending forward from the inside of the rail and turns on a microswitch when it is pushed down by the entrance roller.

[0007]

[Action]

 In the roller entrance detection device configured as described above, when the roller enters and the passage confirmation lever is tilted, the micro switch turns on, and when the roller passes the passage confirmation lever position, the passage confirmation lever moves to the old position. Return to. Subsequent rollback of the roller is blocked by the standing passage confirmation lever, and the microswitch cannot be pressed again by the movement of the hanger roller between the stopper and the passage confirmation lever.

[0008]

【Example】

 With reference to FIG. 4 and FIG. 5, an embodiment in which the roller entrance detecting device of the present invention is applied to a scramble rail of a hanger conveying device will be described. The parts common to the conventional ones are given the same reference numerals. Further, the scramble rail 3 described here is a square type, but the scramble rail 3 may be a round type as in the conventional one.

The scramble rail 3 includes a stopper 4 at the downstream end of the roller traveling path, a micro switch 7 for detecting entry of a hanger roller in the scramble rail 3 on the upstream side, and a passage confirmation lever on the upstream side. And 8 are attached.

An air cylinder 5 is connected to the stopper 4. However, the stopper 4 normally projects to the traveling path of the roller by the force of a spring (not shown). Also, when it is necessary to direct the hanger roller R to the bypass rail, the stopper 4 projects into the traveling path of the roller. On the other hand, when the scramble rail 3 forms the main rail and there is no need to swing the hanger roller R to the bypass rail, the stopper 4 is pulled in from the traveling path by the operation of the air cylinder 5. Therefore, even if the hanger transport device is stopped for some reason, the hanger roller R is stopped by the stopper 4, so that the hanger roller R, which should originally be stopped, is not passed through.

The passage confirmation lever 8 is used to operate the micro switch 7, and also serves as a backflow prevention member in a conventional device. The passage confirmation lever 8 is swingably supported by a passage confirmation lever shaft 9 provided between both side walls of the scramble rail 3, and an upper portion thereof projects upward from a hole 3a formed in the scramble rail 3. ing.

The passage confirmation lever 8 is formed such that the lower portion (left side in FIG. 4) is heavier than the upper portion (right side in FIG. 4) and normally stands up to the position shown by the solid line in FIG. 4 by its own weight.

In the approach detection device configured as described above, when the hanger roller R enters in the direction shown by the arrow in FIG. 4, its shaft Ra pushes the passage confirmation lever 8 down to the position shown by the chain double-dashed line in FIG. The operation piece 7a of the micro switch 7 is pushed down to turn on the micro switch 7. When the passage of the hanger roller R is completed, the passage confirmation lever 8 returns to the old position again. Therefore, even if the hanger roller R moves backwards thereafter, the shaft Ra hits the passage confirmation lever 8 that has stood upright and does not retract further. Also, unless another hanger roller R rolls from the upstream side, the micro switch 7 will not be pressed again when the hanger roller R moves back and forth between the stopper 4 and the passage confirmation lever 8. On the other hand, the scramble rail 3 is moved to the bypass rail side when the micro switch 7 is turned on.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

That is, since chattering of the micro switch does not occur, it is possible to accurately and promptly detect that the roller has entered a predetermined stop position. Also, since the micro switch is operated by the passage confirmation lever that engages with the central axis of the roller, erroneous detection due to the inclination of the roller is eliminated. Further, it is possible to reliably prevent the roller from returning from the predetermined stop position.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a hanger transfer device.

FIG. 2 is a front view of a conventional roller entrance detection device.

FIG. 3 is a side view of a conventional roller entrance detection device.

FIG. 4 is a front view of the roller entry detection device of the present invention.

FIG. 5 is a plan view of a roller entrance detecting device of the present invention.

[Explanation of symbols]

 3 Scramble rail 4 Stopper 7 Micro switch 8 Passage confirmation lever R Hanger roller

Claims (1)

[Scope of utility model registration request] 1. A stopper, a micro switch provided in the rail on the upstream side of the stopper, and a swing switch provided on the upstream side of the stopper. A roller entry detection device consisting of a passage confirmation lever that turns on a micro switch when it is tilted.