JPH0527366Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a fabric conveying device in a sewing system, and is used for a device that automatically conveys sewing fabric between sewing processes. .

(Prior art) As a conventional device of this type,
There is a technology described in the publication.

In this device, a plurality of hangers on which fabrics to be sewn are hung are hung on a carrier, and the carrier is transported along an overrail to a predetermined sewing machine. Then, the hanger is removed from the carrier, but the specified sewing is performed one after another without removing the fabric from the hanger.
When the sewing for the carrier on the stand is completed, all the hangers are hung back on the carrier and the carrier is transferred to the next process.

(Problem to be solved by the invention) However, the above-mentioned overrail type conveyance means requires a large space for equipment, has a high equipment cost, and the position of the overrail is fixed relative to the sewing machine. There is a problem that it is not possible to respond flexibly when changing the layout, etc.

The present applicant previously filed an application for a conveying device that eliminates such problems (Japanese Patent Laid-Open No. 139792/1983).
In this conveying device, pulleys are disposed on movable opposing pedestals, and an endless belt is wound around the pulleys. When a motor rotates the pulley, the material to be sewn placed on the endless belt is moved. is starting to move. A limit switch is installed on the pedestal, and when the workpiece on the endless belt moves close to the pedestal and touches the limit switch, the motor stops driving, the endless belt stops running, and the workpiece stops moving. movement has also come to a halt.

However, in this conveying device, since the entire limit switch is located below the endless belt, for example, in the case of a hard workpiece containing a core, the workpiece does not hang down sufficiently, and the workpiece is lower than the limit switch. There was a risk that it would be positioned above and not come into contact with the limit switch. In this case, there is a problem in that the motor continues to operate indefinitely and the object to be sewn does not stop at a predetermined location, causing the object to fall from the end of the endless belt.

Therefore, it is an object of the present invention to provide a sewing material conveying device that can reliably stop the running of an endless belt even when a sewing material that has a core inside and does not hang downward is placed on the endless belt. is a technical issue.

[Structure of the idea]

(Means for Solving the Problems) The technical solutions taken in the present invention to solve the above-mentioned problems include a first pedestal, a first pulley mounted on the first pedestal, a motor that drives a first pulley; a second pedestal disposed at a predetermined distance from the first pedestal; a second pulley mounted on the second pedestal; and a second pulley mounted on the second pedestal; an endless belt stretched between the second pulley and having a normal running part that carries a workpiece to be sewn and a reverse running part that runs in a direction opposite to the normal running part; and an endless belt disposed on the first pedestal. a switch for stopping the motor, and a sensing plate disposed on the first pedestal to face the second pedestal and opening the switch when the object to be sewn comes into contact with the object; This is a sewing material conveying device characterized by extending above and below a normal running portion of an endless belt.

(Function) In the sewing material conveying device of the present invention, since the sensing plate extends above and below the normal running section of the endless belt, the sewing material, such as a core, is inserted into the normal running section of the endless belt and becomes flexible. Even if something is supported that is not flexible and does not hang down, it will always come into contact with the sensing plate. In this way, the problem of the sewing object failing to come into contact with the sensing plate is eliminated.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings. In FIGS. 1 to 4, a bottom surface 11a of a box 11 is located at the upper end of a pole 10b that stands upward from the base 10a of the first pedestal 10.
(Fig. 2) is fixed. The motor 12 disposed inside the box 11 is held by a bracket (not shown) fixed to the bottom surface 11a, and the tip of the shaft 12a (FIG. 2) of the motor 12 has a
A first pulley 30 is mounted to rotate together.

The second pedestal 13, which is arranged at a predetermined interval or distance from the first pedestal 10, has a base 13a.
It consists of a pole 13b erected on the base 13a, and a base plate 13c fixed to the upper end of the pole 13b, and a pair of bearings 1 are mounted on the base plate 13c.
4 and 14 are fixed. However, bearing 1
4 and 14, a single shaft 15 is rotatably supported, and a second pulley 16 and a retaining member 17 are mounted on one end and the other end of the shaft 15, respectively.

Between the first pulley 30 and the second pulley 16,
An endless belt 18 is stretched, and when the motor 12 is driven, the endless belt 18 moves in the direction of the arrow in FIG. It is adapted to be displaced in the direction of the pedestal 10. However, motor 1
2 forms a series circuit with a normally open main switch 20, a normally closed microswitch 21, and a power supply 22, as can be seen from the circuit diagram shown in FIG. 3, and normally the main switch 20 is closed. The above-mentioned endless belt drive can be achieved by simply

The endless belt 18 has a forward running section 18a on which the workpiece 19 is supported, and a reverse running section 1 that runs around the first pulley 30 in the opposite direction to the forward running section 18a.
8b. As shown in Figure 2,
The forward running portion 18a extends into the box 11 through an opening 11c formed on the slope 11b of the box 11, and also extends around the first pulley 30 to become the reverse running portion 18b, which extends to the bottom surface of the box 11. 11a
It extends outside the box 11 through a hole 11e formed in the front wall 11d connecting the surface and the slope 11b and a hole 23b formed in the base surface 23a of the sensing plate 23.

Thus, the sensing plate 23 has a base surface 23a facing the front wall 11d of the box 11 at a predetermined distance.
and an upper side portion 23c that projects diagonally in the direction of the box 11 from the upper end portion of the base surface 23a and whose upper end portion 23c' extends above the forward running portion 18a;
A lower side portion 23d protrudes toward the box 11 from the lower end of the box 3a, an extension portion 23e extends from the upper side portion 23c, and a portion that extends downward from the extension portion 23e and passes through the opening 11c of the box 11 into the box 11. It consists of a hanging wall 23f that protrudes into the wall, and a projecting piece 23g that projects from the hanging wall 23f toward the base surface 23a.

The lower piece 23d of the sensing plate 23 has a hinge member 24
The first part 24a is fixed to the first part 24a.
The second part 24c pivoted by the pin 24d is
The front wall 11d of the box 11 is
Fixed. In this way, the sensing plate 23 as a whole tends to tilt counterclockwise as seen in FIG. 2 with the pin 24b as the center due to its own weight.
The protruding piece 23g of the sensing plate 23 comes into contact with the inner surface of the front surface 11d of the box 11.

Moreover, on the inner surface of the side plate 11f of the box 11,
The micro switch 21 is fixed, and the free end of the lever 21a of the micro switch 21 is in contact with the hanging wall 23f of the sensing plate 23. However,
When the object to be sewn 19 comes into contact with the base surface 23a or the upper side 23c of the sensing plate 23 due to the drive of the endless belt 18, the sensing plate 23 rotates clockwise around the pin 24b, and as a result of this rotation, Lever 2
1a is energized to open the micro switch 21 and stop the motor drive. FIG. 4 shows an object to be sewn (for example, a rigid deformed sheet) 31 into which a core material and the like are incorporated. In the device of the present invention, even such a special form can be easily added to the object to be transported. That is, although the workpiece 31 passes through the base surface 23a of the sensing plate 23, since the upper end 23c' of the upper side 23c extends above the normal running part 18a of the endless belt, the workpiece 31 passes through the base surface 23a of the sensing plate 23. Both wing parts 31a, 31a of 31 always come into contact with the base surface 23a or the upper side part 23c. Therefore, the motor drive is stopped in the same manner as described above.

[Effect of idea]

According to the present invention, the sensing plates extend above and below the normal running section of the endless belt. Therefore, even if the normal running section of the endless belt carries a sewing object, such as a core that is inflexible and does not hang down, it will always come into contact with the sensing plate, and when the switch is turned on, the motor will start. Stops driving. Therefore, there is no problem in which the endless belt continues to run forever, and the workpiece can be reliably stopped at the desired location.

[Brief explanation of the drawing]

Fig. 1 is an external view of an embodiment of the sewing object conveying device according to the present invention, Fig. 2 is an explanatory diagram of a sensing plate, Fig. 3 is a drive circuit diagram, and Fig. 4 is an explanation of conveyance of a special sewing object. It is a diagram. Explanation of symbols, 10...first pedestal, 12...motor, 13...second pedestal, 16...second pulley, 1
8... Endless belt, 18a... Normal running part, 18b
... Reverse running section, 19 ... Sewn object, 21 ... Micro switch (switch), 23 ... Sensing plate, 3
0...first pulley, 31...sewn object.

Claims (1)

[Claims for Utility Model Registration] A first pedestal, a first pulley mounted on the first pedestal, a motor for driving the first pulley, and a predetermined distance from the first pedestal. a second pedestal disposed on the second pedestal; a second pulley mounted on the second pedestal; and a second pulley suspended between the first pulley and the second pulley;
an endless belt having a normal running section that carries a sewing object and a reverse running section that runs in a direction opposite to the normal running section;
a switch disposed on the first pedestal to stop the motor; and a switch disposed on the first pedestal to stop the motor;
A sensing plate disposed on a pedestal and opening the switch upon contact with the sewing object, the sensing plate extending above and below a normal running portion of the endless belt. Object conveyance device.