JPH0245558B2 - YOSETSUBOYOSHINSENSOKYUSOCHI - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a feeding device for feeding a coated arc welding rod core wire to a coating coating device, and in particular to a feeding device for feeding a coated arc welding rod core wire to a coating agent coating device, and in particular to a feeding device that can quickly and accurately change the core wire diameter. The present invention relates to a fiber feeding device equipped with a flexible fiber guide.

(Prior art) In the manufacturing process of coated arc welding rods, the coating is applied by feeding a certain length of steel core wire into a coating machine, and using the coating machine to apply the coating material around the diameter of the core wire. However, in order to continuously feed a fixed length of core wire into the coating machine without interruption, a core wire feeding device is used.

A conventional fiber feeding device will be explained with reference to FIG. As shown in the figure, on the base 1 there is a hopper 3 having a drop guide 2 that accommodates a large number of core wires and lowers the core wires in a line below, and a hopper 3 that receives the core wires from the drop guide 2 and moves the core wires in the axial direction. A pair of pick-up rollers 4, followed by two pairs of feed rollers 5, and core wire guides 6, 7 between the pick-up roller and the next feed roller and between the feed rollers are arranged. . The core wires fed by these rollers and guides are fed to the coating machine 9 through a long passage tube provided behind the second feed roller.

However, in order to perform painting work smoothly,
It is essential to feed the core wire along a constant line at a predetermined speed and without bending.
For this reason, it is necessary to strictly adjust the distance between the drop guide 2 and the rollers 4 and 5, depending on the diameter of the core wire. 7 also needs to be adjusted to a guide hole according to the diameter of the core wire. In other words, the hole diameter of the core wire guide is normally slightly larger than the core wire diameter (≒ core wire diameter + 15/100 mm), so if the core diameter changes, it is necessary to change the guide to match that. Must be different. However, as shown in FIG. 2, the core wire guide 6 or 7 is held and fixed in the V-shaped groove of the guide mounting block 10 in the form of two halves, so when the guide is replaced, the screw nut 11 is
The problem was that the replacement was time consuming and the installation accuracy was poor.

Furthermore, in order to avoid the complexity of replacing the core wire guide, a double-row guide as shown in FIG. 3 has been proposed. That is, as shown in the figure, two core wire supply grooves 12 and 13 of different diameters (or the same diameter) are provided between the feed rollers 14 and between the feed roller 14 and the pick-up roller 15.
This is an example in which a plurality of stages of core wire guides 16 corresponding to numbers 2 and 13 are arranged. However, this fiber guide is of a fixed type, and it is extremely difficult to move the roller side that rotates at high speed up and down to align it. The position to the wire coating path deviates from the best position, there are as many as 10 types of core wire diameters, and this double-row guide system only has two rows at most, which poses problems in practicality.

(Object of the Invention) The present invention has been made in view of these points, and allows the wire guide hole to be easily and quickly changed according to the wire diameter without removing the guide body.
The purpose is to accurately position the guide hole.

(Structure of the Invention) The gist of the present invention for achieving this object is a core wire feeding device that takes out the core wire from the lower part of the hopper containing the welding rod core wire and continuously feeds the core wire to the coating coating device. A fiber guide having a plurality of fiber guide holes in a vertical row and moved up and down by a pulse motor is provided between the pick-up roller for taking out the fiber and the feed roller and between the feed rollers, This is a welding rod core wire feeding device characterized by having a structure in which the core wire guide can be automatically changed as the core wire diameter changes.

Embodiments of the present invention will be described below based on the drawings.

FIGS. 4a and 4b are overall views of the fiber feeding device according to the present invention, and the same reference numerals as in FIGS. 1a and 1b indicate the same parts, so a description thereof will be omitted. In the figure, between the pick up roller 4 and the first feed roller 5 and between the first and second feed roller 5,
Wire guides 21 and 22 having a plurality of wire guide holes of different diameters arranged in a vertical row are arranged to be movable up and down.
It is preferable that the fiber guides 21 and 22 be located as close as possible between the opposing rollers between each pair of rollers in the fiber feeding direction.

5 and 6 are enlarged views of the core wire guide 22 provided between the feed rollers 5 in FIG. 4. As shown in FIG. 7, the core wire guide 22 has a plurality of rows (five rows in the figure) of guide holes 22a having different diameters.
The guide main body 22b formed with the guide main body 2
A screw 22c extends upward from the center of 2b.
It consists of a rod 22d with engraved on it. This guide 22 is sandwiched between a holding guide part 24 extending downward at the center of the gate-shaped holding frame 23 fixed on the base 1 so that there is no play. A screw shaft 27 connected to the output shaft 26 of the motor 25 via a key is connected to the guide 2.
The guide is supported by screwing into the screw 22c of No. 2. 28 is a bearing for the screw shaft 27. A void is formed in the base 1 because the core wire guide 22 descends when using the upper guide hole.

In addition, in the illustrated example, the fiber guide is operated from above and can be moved up and down, but if there is sufficient space inside the base 1, the guide up and down movement mechanism may be placed below the guide. can. Further, the pulse motor 25 is set in advance by converting the amount of movement of the guide into the number of pulses so that the guide hole corresponding to the diameter of the core wire is automatically positioned on the core wire passing line.

(Function) With this configuration, for example, by turning on the operation switch according to the diameter of the core wire used, the set number of pulses is transmitted to the pulse motor 25, and the screw shaft 27 is rotated by the corresponding rotation angle. As a result, the fiber guide 22 rises (or descends), and the predetermined guide hole 22a matches the fiber passing line. Note that FIG. 6 shows a state in which the lowest guide hole is used.

(Effects of the Invention) As explained above, according to the fiber feeding device of the present invention, the work of changing the guide hole by changing the diameter of the fiber can be done easily and quickly, and a pulse motor is used for this work. Therefore, the position of the guide hole can be adjusted accurately, so that the core wire can be fed smoothly.

[Brief explanation of drawings]

Figures 1a and b are a side view and a plan view showing an example of a conventional fiber feeding device, Figure 2 is a front view showing a conventional holding and fixing means for a fiber guide, and Figure 3 is a conventional feeding device. FIG. 7 is a side view showing another example of the device. 4a and 4b are a side view and a plan view showing a specific example of the feeding device of the present invention, FIG. FIG. 7 is a front view and a perspective view of the core wire guide body. 1... Base, 2... Drop guide, 3... Hopper, 4... Pick up roller, 5... Feeding roller, 21, 22... Core wire guide, 23... Holding frame, 24... Holding guide Part, 25...Pulse motor, 27...Screw shaft.

Claims (1)

[Claims] 1. In a wire feeding device that takes out the core wire from the lower part of the hopper containing the welding rod core wire and continuously feeds it to the coating coating device, the A fiber guide is provided between the feed rollers, which has a plurality of fiber guide holes in a vertical row and is moved up and down by a pulse motor, and the fiber guide is automatically changed as the fiber diameter changes. A core wire feeding device for welding rods, characterized by having a structure that allows