JPS6024241A - Device for supplying automatically cross rod - Google Patents

Abstract

PURPOSE:To enable supply of cross rods having many kinds of outside diameters by each one piece by providing many receiving metals on which the cross rods are placed between a pair of driving chains and providing a detector which detects the wrong placing condition and a knockout cylinder which removes the wrongly placed cross rod by the detection signal. CONSTITUTION:Many cross rods 1 with which the relation 2d<D arises between the max. diameter D and min. diameter (d) of the cross rods are successively fed to receiving metals 4. The metals 4 are so installed that if there are the two rods fed into said metals the rods 1 shield the optical axis 16 of a photoelectric tube 15. If the two rods are fed into said metals, the signal from the tube 15 drives a knockout cylinder 12 to project a knockout metal 13 which drops the rod 1 from the metal 1 thereby preventing the malfunction of supplying the two rods. If one rod 1 is supplied, the rod 1 does not shield the optical axis 16 of the tube 15 and is therefore decided to be normal in condition and the cylinder 12 does not operate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic cross slot feeding device for automatically feeding cross rods to be welded to an automatic grating welding machine for automatically welding grooves.

Structure of the conventional example and its problems FIGS. 1 and 2 show a conventional cross rod automatic feeding device. The configuration of this conventional example is shown below in the first part of the drawing.
This will be explained with reference to FIG.

In FIGS. 1 and 2, 1 is a cross rod, and this cross rod 1 is mounted on a box 2.

3 is a stopper that adjusts the flow of cross slot 1.

Numeral 4 is a money receiver, which is attached to a -1t chain 5 in large numbers. 6 is a sprocket, which is attached to the shaft 7. A motor 8 rotates the sprocket 6 via the shaft 7. Reference numeral 9 denotes an outlet side stopper, which guides the cross rod 1 to the outlet 10. 11 is a device frame for automatic cross rod feeding.

Next, the operation will be explained.

The cross rods 1 are placed on a box 2 and are sequentially fed into a receiver 4 by a striker 3. The receiver 4 is attached to the heel of the chain, and the cross rod 1 is supplied by the rotation of the sprocket 6 transmitted through the shaft 7 by the rotation of the motor 8.

The cross-throttle 3 is then supplied to the exit stopper 9.

Sodo 1 falls from exit 1o and crashes into the grating welding machine (
(not shown) is automatically supplied to the welding position.

However, the outer diameter of the cross rod 1 is generally φ5
There are various types ranging from about φ11 to approximately φ11, and a relationship such as 2d<D may occur between the maximum diameter φD and the minimum diameter φd of the outer diameter of the cross opening and the end 1. In this case, two cross rods 1 are placed on the receiver 4, resulting in a malfunction in which two cross rods are fed.

Next, the malfunction of two-piece supply will be explained with reference to FIGS. 3 and 4.

In Fig. 3, the distance between the outer diameter φd1 of the cross rod 1 placed on the support 4 and the gap H1 of the support 4 is 2×φd+ >Hl.
In the case of the dimensional relationship, malfunctions of one or two cross rods will not occur. However, as shown in Figure 4,
If the outer diameter φd2 of the cross rod 1 and the gap H1 of the receiver 4 have a dimensional relationship of 2×φd2<Hl, two cross rods 1 will be supplied incorrectly as shown in FIG.

If the outer diameter of the cross rod 1 is one type, as shown in Figure 3, select the gap H1 of the support 4 so that 2×φd+:>Hl. By doing this, it is possible to prevent malfunctions when supplying two rods, but in cases where the cross rod 1 has several different outer diameters, it is possible to , 2d × D occurs, as shown in FIG. 4, 2×φd2
(Hl occurs, and a malfunction of the two-tree supply occurs. Then,
Since it is practically impossible to adjust the gap HIN of the receiver 4, it is a drawback that a malfunction of the two-piece feed will definitely occur.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks of the prior art, and aims to improve the reliability of automatic cross rod feeding in one operation.

114 Achievement of the Invention In order to achieve this object, the present invention includes a large number of holders that automatically hold the cross rods of the workpiece to be welded, arranged in parallel between a pair of chains driven by a motor, and
Page 5 Phototubes for detecting the state where two cross rods are incorrectly placed on one receiver, where a relationship of 2 (i<D) occurs between the maximum outer diameter and the minimum diameter d. A protruding cylinder is provided which uses a signal from the detector to drive a protruding metal fitting for removing an incorrectly loaded cross rod.

This configuration ensures automatic feeding of cross rods one tree at a time, streamlining the work.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 5 to 8 of the drawings.

1. 2, 3, 4, 5, 6, 7, 8, 9, 10° 11 are the same cross rods, boxes, and nuts as before.

These are the receiver, sprocket, shaft, motor, exit stopper, and frame. 12 is a cylinder for ejection when the cross rod 1 is made of two pieces.

Next, the operation of the above embodiment will be explained.

In FIGS. 5 and 6, the cross rod 1 is placed on a box 2, and is sequentially fed into a receiver 4 by a nut picker 3.

Further, the receiver 4 is attached to a chain 5, and the rotation of the sprocket 6 is transmitted via the shaft 7 by the rotation of the motor 8, thereby supplying the cross rod 1. And the outlet 6...-] The cross slot 1 supplied with the partial size of the side stopper 9 is
Exit 1] Fall from 10. Next, in FIGS. 7 and 8, when there are two cross rods 1 supplied by the receiver 4, the cross rods 1 interrupt the optical axis 16 of the phototube 15. If there are two rods, the ejecting cylinder 12 is driven by the signal from the phototube 15, and the ejecting metal fitting 13 protrudes and causes the cross rod 1 to fall from the holder 4, thereby preventing the malfunction of the two-piece supply. prevent. Note that the protrusion cylinder 12 is attached to the frame 11 via a placket 14. Furthermore, as shown in FIG.
Since this does not block the optical axis 16 of the phototube 15, it is determined that it is in the normal state and the ejection cylinder 12 barely operates. Therefore, the cross rods 1 are supplied one by one.

In this way, in this embodiment, it is determined whether there is one cross rod 1 or two cross rods 1, and if there are two cross rods, the cross rod 1 is dropped, and if there is one cross rod 1, the cross rod 1 is normally supplied. There is an advantage that even if the cross rod 1 has several different outer diameters, it can be automatically supplied. Furthermore, there is no need to adjust the gap H1 between the receivers 4, and there is an advantage that work can be streamlined. In addition, the selection switch is used to cause the ejecting operation to be performed only when two cross rods 1 are supplied to the receiver 4 in a size related to that of the two cross rods 1.

Effects of the Invention According to the present invention, the following excellent effects can be achieved.

0) Since a mechanism to prevent the supply of two cross rods is provided, one cross rod is supplied to the dormitory.

(2) Since a mechanism for preventing the supply of two cross rods is provided, there is no need to adjust the gap between the receivers, and the work can be streamlined.

(3) Since the mechanism for preventing the supply of two cross rods is provided, one of many types of cross rods has a relationship of 2Xd<D between the maximum diameter φD and the minimum diameter φd of the outer diameter of the cross rod. This supply can be done automatically.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional automatic cross rod feeding device, Fig. 2 is a side view of the same, Fig. 3 is an explanatory diagram of the normal operation of one-rod feeding, and Fig. 4 is an illustration of malfunction of two-rod feeding. , FIG. 6 is a plan view of an automatic cross rod feeding device according to an embodiment of the present invention, FIG. 6 is a side view of the same, and FIGS. 7 and 8 are explanatory diagrams of a reservoir for preventing the feeding of two rods. 1...Cross rod, 4...Kawa, holder, 6...Chain, 6...Sprocket I, 7...
Mark/Shaft, 8...Motor, 12...
・Cylinder for protrusion, 13・・Protrusion metal fittings, 15・・
・Phototube. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 3 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] A large number of holders for automatically placing 1° and V-1 threads to be welded are arranged in parallel between a pair of chains driven by a motor, and the maximum diameter of the outer diameter of the cross slot is A detector such as a phototube is provided to detect a state in which two of a large number of cross slots, in which a relationship of 2d<D occurs between An automatic cross slot feeding device equipped with a protruding cylinder that drives a protruding metal fitting to remove erroneous cross rods.