JPH01253123A - Manufacture of conduit cable for arc machining - Google Patents

Abstract

PURPOSE:To improve the operability and reduce the cost by forming a conduit cable for arc machining incorporating multiple cables in a tube with a margin and manufacturing this cable while transferring it. CONSTITUTION:A screw member 2 is rotatively driven by a driving machine 3, a synthetic resin material mixed with a plasticizer is gradually shifted in the X1 direction, it is plasticized then dissolved and molded in a tube shape while passing from an extrusion port 101 to a circular space 11. A heater is provided on a frame 1, and the synthetic resin material is heated to assist its dissolution during this time. Various cables 14 are fed in the X1 direction via through holes 201-601 by feeding devices 13... concurrently with the molding of the tube, a conduit cable 16 for arc machining storing various cables 14 in a tube 15 thus formed is transferred in the X1 direction by a transferring device 18 and wound in sequence, and the cable 16 is wound in sequence by a winding machine 19.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method of manufacturing a conduit cable used in arc welding and arc cutting operations.

<Prior art> Generally, in arc welding work, for example, long conduit cables are used to guide electricity, gas, water, control signals, etc. to the welding torch by encasing various types of cables in an electrically insulated external wave. However, in recent years, there has been a tendency to use particularly long lengths, for example, lengths exceeding 30 types.

By the way, in arc welding work, work is often carried out at high places or in complicated places, so conduit cables are often referred to, in other words, the conduit cable itself is not very stiff. This is an absolute condition. For this reason, if a conduit cable is formed as a cabtire cable by integrally molding various cables, this conduit cable will be stiff due to the molding and will not be suitable for arc welding work. A conduit cable 16 is used in which various cables 14 are accommodated within an insulating jacket 15 with a margin.

<Problems to be Solved by the Invention> However, the conduit cable 16 that accommodates the various cables 14 with a certain margin is created by manually inserting the various cables m14 into the insulating jacket 15.

That is, it thrusts in from one end of the insulating jacket 15 placed horizontally in a straight line toward the other end.

Although various cables 14 are inserted by pulling, the limit is to obtain a conduit cable 16 of about 15 m in length due to frictional force. For this reason, for example, 20m
When using a 12L conduit cable 16, multiple cables are connected, but the work of connecting the conduit cables 16 is troublesome, and inspection work to ensure that the joints do not loosen during work is troublesome. there were. Of course, when creating the conduit cable 16 by hand, not only is a long work space required to lay the insulating jacket 15 horizontally in a straight line, but also the worker is highly fatigued and requires an inexperienced worker. At the time, there was a drawback that the work could not be completed in spite of the lack of working time.

Means for Solving the Problems〉 The method of manufacturing a conduit cable for arc processing according to the present invention provides an annular space formed by a female cap and a core bar having a through hole in the shaft core, and a cylindrical space. The synthetic polymer material is melted and extruded by a screw rotated within the shaped body and the core shaped body and communicated with an extrusion port of an extruder to extrude a tube having an inner diameter slightly larger than the through hole between the core metals. At the same time as forming the tube, a plurality of cables are fed through the through hole of the core metal in synchronization with the forming of the tube, and a lucky number of cables are enclosed within the tube with a certain margin of arc processing. The present invention is characterized in that a conduit cable for arc processing is formed, and the conduit cable for arc processing is manufactured while being conveyed.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

In FIG. 1, reference numeral 1 denotes a fixed frame body having a cylindrical portion 101 formed therein, and 2 denotes a screw member rotatable with respect to the frame body 1, which is rotationally driven by a suitable drive device 3. This screw member 2 is provided with a through hole 201 in its axial core, and a spiral fin, a so-called screw 202, is provided in its outer peripheral portion corresponding to the cylindrical portion 101. 4 is a cylindrical portion 10 containing a synthetic polymer material, for example, a synthetic resin material.
An extruder 5 in a narrow sense is configured to melt and extrude the synthetic polymer material according to 1 to 4 above using a hopper for supplying the synthetic polymer material between 1 and the screw 202. 6 is a through hole 6 in the shaft core.
01 is provided, and this core metal 6 is a core metal supporting member 7.
It is supported by the crushed body 1 via. As shown in FIG. 2, the core support member 7 has radial ribs 702.702. ... are concentrically spaced apart from each other, and these spaces 703, 703.・・・
The cylindrical portion 101 is communicated with the outside of the core metal 6 through the .

Further, a bearing member 8 is attached to the core metal support member 7, and this bearing member 8 and the screw member 2 are rotatably arranged so that the screw member 2 rotates smoothly. A through hole 701,
801 is provided, and when the core bar 6 is attached, the above-mentioned holes 1a 201, 801, 701, 601 are maintained in a communicating state. Reference numeral 9 denotes a female cap that encloses the core metal 6, and the annular space 11 formed by the female cap 9 and the core metal 6 is a space 703, 703.
It is connected to the extrusion port 101A of the extruder 5 via the extruder 5.

Reference numeral 12 denotes a cooling cylindrical body, which is forcibly cooled using water or an appropriate fluid. Note that screw member 2. Core metal 6.
The core support member 7 and the bearing member 8 are forcibly cooled using water or an appropriate fluid. 13.13... is a power supply cable 141°, a control signal cable 142,
A feeding device for various cables 14 such as a shield gas supply hose 143 and a cooling water hose 144, 17 a guide roller for various cable frames 14, and 18 a conveyance device for conveying an arc processing conduit cable 16. ,
For example, a mechanism using an endless belt is used. Reference numeral 19 is a conduit cutting machine for the arc processing conduit cable 16.

In the above configuration, by driving the screw member 2 by the driver 3, the synthetic resin material, more precisely, the synthetic resin material mixed with the plasticizer, is gradually transferred in the X1 direction, plasticized, and then melted. Extrusion port 101 A → annular space 1
1 and is formed into a tube shape. Of course, the frame IK is appropriately equipped with a heater in order to promote melting of the synthetic resin material. In addition, the feeding vcH13 is carried out before and after forming the tube.

13,... various cable rings 14 are connected to the through hole 201.
-601 and is fed in the X1 direction. The arc processing conduit cable 16 containing various cables @14 inside the formed tube 15 is transported in the X1 direction by a transport device 18. This conveyed conduit cable 16 is shredded by a cutting machine 19. Note that the wall thickness of the tube 15 to be formed largely depends on the speed at which the tube 15 is taken out, that is, the conveyance speed of the conduit cable 16. It is necessary to maintain the transport speed at a constant speed. For this reason, the feeding speed and winding speed of the feeding device 13 and winding machine 19 of the various cables 14 are made to follow the conveying speed of the conduit cable 16. That is, synchronize.

The present invention is to manufacture a conduit tube 16 in which various cables 14 are enclosed within a molded tube 15 with a certain margin.
The female cap 9 and the core bar 6 should be
It is preferable that the center position of the annular space 11 formed by the metal core 6 be located in the f direction from the center position of the electric current 1 hole 601 provided in the core bar 6. If arranged like this,
Since the center of the tube 15 immediately after molding is in the direction of the various cables 14 which tend to hang downward due to gravity, the tube 15 immediately after molding and the various cables 14 are sagging downward. ≠ period contact with 1114 can be avoided.

FIG. 3 is a diagram showing another embodiment for carrying out the present invention, in which, for example, various cables 14 are fed all at once by a feeding device 13. In addition, the extrusion port 101 of the extrusion 45
A is arranged in a direction perpendicular to the molding direction of the tube 15, that is, the X direction, and this extrusion port 101A is connected to the female mouthpiece 9.
It communicates with an annular space 11 formed by the metal core 6 and the metal core 6 . As roughly illustrated, an extruded tube 15
is cooled through a water-cooled shower 21 or a cooling water tank.

Further, the conveyance device 18 includes two or more drive rollers 181, 181.
and an idle drum-shaped roller 182.1 that is pressed toward the drive roller side.
82, and conveys the conduit cable 16 in a state where it is held therein.

Note that each part shown in FIGS. 1 and 2 can be replaced, or each part shown in FIG. 2 can be added to that shown in FIG. M1. Although it is easier to set the outer diameter of the tube 15 by using the cooling cylindrical body 12, the cylindrical body 12 can be omitted regardless of this. Of course, compressed air can be used instead of water cooling as a cooling means after molding.

Furthermore, the cooling water can be removed nine times by blowing compressed air onto the water-cooled Hungit tube 16 after molding.

Moreover, although it has been described that the various cables 14 to be fed are fed in a straight line, the various cables m14 are loosened (loosely) in advance.
It can also be fed in a twisted state. A guide roller for guiding the conduit cable 16 is arranged roughly at the position of the conveying device 18, and a winding machine 19 for winding up the conduit cable 16 can also be used as a conveying device for the conduit cable 16. In this case, the winding speed of the winder 19 must be controlled in response to changes in the winder of the conduit cable 16 wound around the winder 19, which makes control somewhat troublesome. Note that synthetic resin or synthetic rubber can be used as the synthetic polymer material. When using synthetic rubber, the molded tube 15 is subjected to a vulcanization process to form an elastic body, but recently special synthetic rubbers featuring a vulcanization process have been commercially available.
When using this special synthetic rubber for the heel, vulcanization is naturally unnecessary. Further, the synthetic resin can be appropriately selected from resin, nylon resin, soft vinyl chloride, and the like. Furthermore, when using a small diameter conduit cable 16, the female cap 9 and the core bar 6 are replaced with ones having the desired shape.

Note that when the cooling cylindrical body 12 is used, it goes without saying that the cooling cylindrical body 12 can also be replaced with one of desired dimensions.

<Effects of the Invention> As is clear from the above explanation, a conduit cable for arc processing is automatically manufactured in which a plurality of cables are enclosed within a tube formed by the manufacturing method according to the present invention with a certain margin. This eliminates the need for a long workshop for assembling the conduit cable compared to when forming this type of conduit cable by hand, and the diameter of the conduit cable itself is smaller, making the conduit cable and conduit easier to use. The welding torch connected to the cable has good layering and operability (even if it is a long conduit cable, you only need to cut the conduit cable appropriately and connect it to the appropriate equipment). Since the work of assembling the conduit cable and connecting the conduit cable to appropriate equipment can be accomplished in a timely manner by skilled workers, it is possible to significantly reduce costs.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a diagram showing main parts of another embodiment of the invention. FIG. 4, which corresponds to FIG. 1, is a sectional view of a conduit cable for arc processing, which is the object of the present invention. 5... Extruder, 6... Core metal, 9... Female mouthpiece, 11
... Annular space, 13 ... Feeding device for various cables, 14 ... Various cables, 15 ... Insulated external wave (=
Tube), 16... Conduit cable for arc processing, 18... Conveying device, 19... Winding machine agent, patent attorney Hiroshi Nakai

Claims (1)

[Scope of Claims] 1. An annular space formed by a female cap and a core bar having a through hole in the shaft core, a cylindrical body, and a screw rotated within the cylindrical body to form a synthetic polymer. A tube with an inner diameter slightly larger than the through hole of the core metal is extruded by communicating with the extrusion port of an extruder that melts and extrudes the material, and a plurality of cables are formed in synchronization with the forming of the tube. is fed through the through hole of the core metal to form a conduit cable for arc processing in which a plurality of cables are enclosed within the tube with a margin, and the conduit cable for arc processing is A method of manufacturing a conduit cable for arc processing, which is manufactured while being conveyed. 2. The manufacturing method according to claim 1, wherein the center position of the annular space formed by the female cap and the core metal is below the center position of the through hole provided in the core metal.