JPH036865B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for winding welding wire around a wire winding body such as a wire spool. It concerns the method of feeding and winding.

Long welding wires used for automatic or semi-automatic welding are provided in units of 10 to 20 kg or more wound onto spools or the like. That is, the wire is sequentially wound one layer at a time from the winding drum peripheral surface 3a to the outer peripheral surface 3b of the spool 2, as shown in the partially cutaway side views of FIGS. 1 and 2, for example. By the way, the wire wound on the spool is not wrapped around the outermost circumferential surface of the wire winding layer by giving a cast diameter smaller than the winding diameter of the outer circumferential surface 3b to the winding end of the wire in the outermost layer winding part C. This prevents the wire from unraveling due to the springback phenomenon caused by the wire that is cut when the wire winding is completed, and makes it easier to fix the winding end wire. Therefore, the conventional winding end wire 1a of the wire 1 shown in FIG. 1 is relatively stably fixed onto the outermost peripheral surface 3b of the wire winding layer, and there are no problems in use such as unwinding during welding. do not have. However, with the automation and continuousization of welding, it has become necessary to take out the wire at the end of the winding in a short time and set it in the welding machine or insert it into the wire tip, or the wire is consumed during welding. Since it may be necessary to connect a new spool of wire to a new spool, it is possible to recognize the end of the wire winding at a glance (the drawn end from the perspective of the beginning of use), and the operator can easily connect the wire to a new spool while wearing insulating leather gloves. However, it has become clear that the conventional shape of the winding end wire is insufficient. In response to such demands, efforts have been made to make the winding shape of the winding end wire into the shape shown as 1b in FIG. 2. In other words, the winding end wire 1b, which has a small cast diameter only at the winding end of the wire 1, is formed in the shape of a raised protrusion on the outermost circumferential surface 3b, so its position can be confirmed at a glance. Satisfied. However, when a welding wire is first used, the wire at the end of the winding is required to have a linear shape so that it can be easily set in a welding machine and the tip of the wire can be easily inserted into the wire tip. For example, assuming a case where multiple spools are used in series during continuous automatic welding, the winding end wire 1b formed on the standby spool is used as the winding end wire 1b formed on the spool in use when the winding wire is running low. It is necessary to connect it to the wire, but it is necessary to make the connection part smooth so that it can pass through the wire tip without any problems, so it is necessary to cut the curved tip part and then connect it. On the other hand, the winding end wire is straight, that is, the winding end wire 1e as shown in FIG.
Alternatively, if the winding end wire 1f can be formed into any shape as shown in FIG. 4, there should be no inconvenience in finding and taking out the winding end and setting it in a welding machine. The winding end wires 1e and 1f shown in FIGS. 3 and 4 have the cast removed from the conventional winding end wire 1a (FIG. 1) and are instead made straight, and have the above-mentioned functions. However, when comparing the properties of the two winding ends 1e and 1f, the former is superior in terms of desirability because the tip edge 1e of the wire is in close contact with the winding outer peripheral surface and is superior in safety. However, in any case, there is no problem as mentioned above, and the current issue is to provide linearity to the wire at the end of the winding.

The present invention has been made in view of the above-mentioned circumstances, and is capable of being stably fixed on the outermost surface of a wire winding layer wound around a welding wire winding body such as a spool, It goes without saying that it is possible to form winding end wires that are functionally superior and that are easy to locate, take out, set into a welding machine, and connect between spools, and can be easily attached to any winding body. It is an object of the present invention to provide an efficient welding wire winding method that can form a winding end wire that is uniform and has a desired shape.

The configuration of the present invention that achieves the above object is that when winding a welding wire curved to a desired cast diameter onto a wire wrapping body, the wire immediately before the winding end is placed inside and outside the curved wire. While being removably gripped by a pair of gripping rollers, the wire on the side of the wire wrapping body from the gripping position is pulled out from between the gripping rollers by a pulling roller that moves from the inside of the curve to the outside. The gist of this method is to process the winding end wire into a straight line using a pull-out roller and a gripping roller to complete the winding on the winding body.

The configuration and effects of the present invention will be explained below in detail based on the drawings showing the embodiments. However, the embodiments below are only one specific example, and the design may be modified in various ways in keeping with the spirit described above and below. All are included within the technical scope of the present invention.

5, 6 and 7 are schematic explanatory diagrams illustrating the method of the present invention. 5, 6, and 7 each show a state in which the wire 1, on which a desired cast has been formed, has stopped just before completing winding around the wire spool 2 (not shown) provided forward in the direction of the arrow. ing. In other words, the wire shown in FIG.
The winding end wire 1g is held at the rear thereof (on the right side of the figure) and cut with a cutter (not shown). The wire 1 has a curved shape on the upper side of the drawing, that is, according to a given cast. On the other hand, a pair of upper and lower rotary gripping rollers 4 are provided on both sides of the winding end wire 1g, and each roller 4a, 4b holds the winding end wire 1g from the center side of the casting radius. grips the wire so that it can be pulled out from the distal side of the cast radius. A pull-out roller 5 is provided in front of the gripping roller 4 and at approximately the same height as the roller 4b, and is configured to move upward, that is, from inside the curve of the wire 1 to outside. FIG. 5 shows the drawing roller 5 in its original position, with the wire 1 resting lightly on it. Sho volume end 1
There is no tension on the g side, but the wire 1 on the winding side to the wire spool 2 is under tension.

Next, FIG. 6 shows a state in which the pull-out roller 5 has started to move upward from the state shown in FIG.
That is, when the pull-out roller 5 moves toward the centrifugal side indicated by the arrow, the wire on the pull-out roller 5 is also pushed up and starts to move along with it. As the position of the wire moves, the winding end wire 1g on the non-tension side held by the gripping roller 4 also begins to be pulled out, and is pulled out diagonally upward to the left in the figure, that is, to the outside of the wire curve, as shown by the arrow.

FIG. 7 shows a state in which the pull-out roller 5 has been moved further upward from the state shown in FIG. That is, as the position of the pulling roller 5 moves to the outside of the curve from the wire gripping portion, the winding end wire 1g, which is being pulled out while being gripped by the gripping roller 4, comes into contact with the peripheral surface in front of the gripping surface of the roller 4a. In addition, the contact length also increases and becomes pulled out. That is, the winding end wire 1g that is pulled out against the gripping force of the roller 4 comes into contact with the circumferential surface of the roller 4a and is squeezed while being given a cast that is opposite to the cast that has already been given. The straight part becomes a straight wire. When the winding end wire 1g has completely passed through the gripping roller 4 and the drawing roller 5, the winding end wire 1g is wound onto the outermost peripheral surface of the spool. Linearity is given as described above, but
If the pull-out roller 5 is made to have a small diameter as shown in the figure and is pulled up relatively quickly, a large tension will be applied in the direction of the spool 2, so that the wire in front of the straight section will be given a cast with an even smaller diameter than the normal cast. The winding end wire 1g has the shape 1e (FIG. 3). On the other hand, if the gripping rollers 4a and 4b are positioned below the wire travel path in FIG. 5 and the wire is wound only by the spool, the wire It is squeezed in the same manner as described above, and a straight portion is formed (at this time, the drawing roller 5 can be omitted). In the above explanation, we mentioned things like ``providing linearity'' and ``making the wire straight,'' but the intended purpose can be achieved even if the wire is not perfectly straight, so the meaning of straight line here should be interpreted strictly. It's not something you should do. In addition, the length of the linear portion and the height and shape of the winding end wire fixed to the spool can be determined by adjusting the moving distance of the drawing roller 5, the gripping force of the gripping roller 4, or by adjusting the cast applied in advance to the winding end wire. A desired shape can be obtained by appropriately selecting and combining the diameters, etc.

Figures 8 to 15 are diagrams showing embodiments of the most preferred apparatus for carrying out the method of the present invention. A detailed explanation will be given below based on these drawings. First, FIG. 8 shows a state in which the wire 1 with a desired cast formed thereon stops just before completing winding around the spool 2;
This is a side view showing the wire processing device 6 retracted to the side of the wire 1, and FIG. 9 is a view of the wire processing device 6 viewed from the left side direction. Note that common parts among the symbols used in the figures below are given the same symbols as in FIGS. 5 to 7. The wire 1 is fed from a cast forming device (not shown), passes through a supply roller 7, and is wound around a spool 2 (not shown). At the beginning of winding, the winding diameter of the spool 2 is small, so the wire is wound through the lower path X, but as the winding diameter increases, the wire 1
Since the path of the wire 1 gradually moves upward as shown by the arrow, the path of the wire 1 immediately before the winding is completed becomes the upper path Y. As shown in FIG. 9, the wire processing device 6 needs to be retracted laterally from the traveling path of the wire 1 so as not to come into contact with the wire 1 during normal winding. That is, two rail members 8, 8 are provided in a direction perpendicular to the wire path,
The wire processing device 6 is fixed to a sliding member 21 that slides on the rail members 8, 8, and is configured to be able to slide forward and backward in the left and right directions in FIG. 9 by a drive means (not shown). . On the other hand, the wire path side of the mounting member 9 in the wire processing device 6 (the supply roller 7
On the side surface, a rotary roller 4b is provided at approximately the same height as the wire 1 or at a slightly lower position. Further, the pull-out roller 5 provided adjacent to the front of the roller 4b has an elevating member 11 configured to be able to rise along an elevating rail 10 fixed to the mounting member 9.
The drawing roller 5 is rotatably provided on the top of the lifting member 11, and is configured to be able to rise at least to the position shown by the dashed line by a cylinder (not shown) provided on the top of the lifting member 11. . The drawing roller 5 has a deep circumferential groove with high edges and a concave center to prevent the wire from flying out. Further, on the mounting member 9, a scooping member 13 is installed adjacent to the front side of the pulling roller 5, and the bolts 12, 1 are mounted on the mounting member 9.
2, and the member 13 has a scooping surface 13a extending in the direction of the wire path and formed into a tapered shape. A horizontal surface 13b is provided at the top of the scooping surface 13a,
A stopper 15 for the wire 1 is provided near a position facing the circumferential groove of the drawing roller 5.
On the other hand, a roller 4b is located near the supply roller 7, and a cutter lifting member 1 equipped with a lifting means is provided above the drawing roller 5.
A roller 4a and a cutter 16 for cutting the winding end wire are integrally formed on the cutter elevating member 14. Therefore, the roller 4a descends in synchronization with the descent of the cutter lifting member 14, reaches the position shown by the dashed line, and faces and approaches the roller 4b, where the pair of gripping rollers 4
The cutter 16 is configured to descend onto the wire 1 just before the supply roller 7 and cut the wire 1 with its tip 16a to form the end of the winding.

FIG. 10 shows a state in which the wire processing device 6 has begun to move toward the wire path side as indicated by the white arrow. When the wire processing device 6 slides forward along the rail members 8, 8, the scooping member 13 enters into the wire path from the tip side of the tapered scooping surface 13a and picks up the wire 1 in front of the supply roller 7. is scooped up onto the scooping surface 13a. As the scooping member 13 moves forward, the scooped wire 1 is lifted up on the scooping surface 13a as shown by the dashed line, reaches the horizontal surface 13b, and is stopped at the stopper 15. At this time, the wire scooped up has already reached the upper position of the roller 4b and the drawing roller 5.
In FIG. 11, the scooping member 13 is partially removed to make it easier to see the wire 1 that has reached the roller 4b. FIG. 12 is a side view of the same state as FIG. 11, and when the cutter lifting member 14 starts to be lowered, the roller 4a and the cutter 16 move as shown by the white arrow.
falls onto the wire 1, and the roller 4a catches and grips the floating wire. That is, FIG. 13 shows a state in which the cutter lifting member 14 has been lowered to a predetermined position, and the roller 4a cooperates with the roller 4b to form a pair of gripping rollers 4, and the wire 1 is gripped on the gripping surface thereof. On the other hand, Katsuta 1 descended.
6 cuts the wire 1 with the tip 16a to form the winding end wire 1g. When this operation is completed, the wire 1 in front of the gripping roller 4 is under tension, and the winding end wire 1g side is under tension. In this state, the pulling roller 5 starts to move. That is, when the elevating member 11 is raised, the pulling roller 5 catches the wire 1 in the circumferential groove within the roller during its ascent, continues to rise, and starts moving while pulling up the caught wire as well. Then, the winding end wire 1g gripped by the gripping roller 4 begins to be pulled out, and as the pulling roller 5 rises, it begins to be pulled out toward the outside of the wire curve. 14th
15 shows this state. Then, the winding end wire 1g comes into contact with the roller peripheral surface in front of the gripping surface of the roller 4a and is pulled out while gradually increasing the contact length. In this way, the winding end wire 1g is squeezed into a straight wire while being given a cast opposite to the already given cast. When the winding end wire 1g has completely passed through the gripping roller 4 and the drawing roller 5, the winding end wire 1g is wound onto the outermost peripheral surface of the spool. Finally, the wire processing device 6 is returned to its original position to complete the wire processing and winding. The length of the straight line portion to be formed and the height and shape of the winding end wire 1g fixed to the spool depend on the roller diameter of the drawing roller 5, the speed of position movement,
Distance and gripping force of gripping rollers 4 gripping rollers 4a, 4
As mentioned above, a desired result can be obtained by appropriately selecting and combining the positions of b, etc. Furthermore, if the operation of each part of the processing device 6 is linked to the winding operation of the wire 1 on the spool 2, the shape of the winding end wire 1g can be completely automated as one operation during the winding operation of the wire 1. can.

Since the present invention is configured as described above, it is stably fixed on the outermost surface of the wire winding layer wound around a welding wire winding body such as a spool, and the welding machine It goes without saying that it is possible to form a functionally excellent winding end wire that is easy to set and connect the spool, etc., but it is also possible to form a winding end wire on the wound body as soon as the winding is completed, and The present invention provides an efficient welding wire winding method that can form winding end wires having the same desired shape and a uniform shape on any winding body.

[Brief explanation of drawings]

1 and 2 are partially cutaway side views showing a conventional winding end wire of welding wire wound around a spool, and FIGS. 3 and 4 are winding end wires according to the method of the present invention for welding wire wound around a spool. FIGS. 5, 6, and 7 are schematic explanatory views illustrating the method of the present invention, and FIGS. 8 to 15 are explanatory views showing preferred embodiments of the method of the present invention. 1... wire, 2... spool, 3... winding drum,
4... Gripping roller, 5... Pulling roller, 6... Wire processing device, 7... Supply roller, 8... Rail member, 9... Mounting member, 10... Elevating rail,
11... Elevating member, 12... Bolt, 13... Scooping member, 14... Cutting elevating member, 15...
Stoppa, 16...Katsuta.

Claims (1)

[Claims] 1. When winding a welding wire with a desired cast formed by curving the wire onto a wire wrapping body, the wire just before the winding end is held by a pair of gripping rollers placed on the inside and outside of the curved wire. While gripping the wire to the extent that it can be pulled out, the wire on the side of the wire wrapping body from the gripping position is pulled out from between the gripping rollers by a pulling roller that moves from the inside to the outside of the curve, and the wire is wound by the pulling roller and the gripping roller. A method for winding a welding wire, the method comprising processing a terminal wire into a straight line to complete the winding around a winding body.