CN85100693A - Solder wire convey soft pipe - Google Patents

Abstract

Be used for semi-automatic arc weld, particularly CO ₂In the semi-automatic arc weld.Flexible pipe is made up of many segment cross sleeve pipes (1), between sleeve pipe by coupling sleeve (2) with hinge (3 _A, 3 _B) link.The rotating shaft of adjacent two hinges is vertical mutually.Horizontal vertical alternately is equipped with sleeve-barrel roollr (4) in the sleeve pipe, and welding wire (5) is along moving in the formed cavity.Cable (6) branch multiply is placed on the sleeve pipe exterior angle.The hose overcoat corrugated hose, the outside is thick and hard, and is inboard thin and soft, and protective gas is pipe circulation thus also.This flexible pipe characteristics are: the rolling wire-feeder resistance is little, and is laterally soft, but do not form dead folding.Longitudinal rigidity is big, and is in light weight, and wire feed is stable, and welding wire " storage " is few.

Description

Solder wire convey soft pipe

The present invention is used for semi-automatic arc weld, particularly CO ₂In the semi-automatic arc weld.

Wire convey soft pipe is one of most important accessory in the semi-automatic arc weld equipment.Whether its work often determines well whether welding process is stablized and can semiautomatic welding itself be taken like a shot by numerous workmans aborning.General at present wire convey soft pipe commonly used is the helix tube by the spring steel wire coiled, and is flexible in order to make hose operation.People have thought some ways (1) on the coiling of helix tube and duty.In order to reduce welding wire, can do liner (2) or add kollag with the lower material of coefficient of friction by resistance.Patent (3) forms channel of welding wire with ball, and the change sliding friction is rolling friction, and resistance is reduced greatly.But additional ball gathering sill and the circulation backward channel thereof of requiring all increases flexible pipe weight and rigidity to some extent.In addition, if in use owing to dirty dirty accumulation, some balls are interrupted along the rolling of raceway, and all balls all are stuck before and after will making so, and resistance will increase greatly.Patent (4) has replaced ball with sleeve-barrel roollr, and its housing is a section, lives with the hinge connection, can relatively rotate.But because all cylinders all are arranged in the plane in a housing, thus roller must slot, to keep the position of welding wire.Hinge has two kinds, alternately arranges mutually.A kind of adjacent two joints that connect that make can relatively rotate in plane, cylinder place.Another kind can rotate both around the welding wire center line.Thisly cylinder is arranged in a way in the plane makes cylinder be subjected to bigger lateral thrust, make cylinder and inner walls direct friction, resistance increases.The hinge of boxing silk axis rotation is stuck into damage easily when hose bending.Whole hose bending degree of flexibility is not enough, and can't prevent from simultaneously the local crooked dead folding of exaggerating that forms to influence welding wire and sending to.

In all relevant documents of wire convey soft pipe, all do not point out other parts of flexible pipe, should as conduction, air guide, overcoat etc. as where cooperating consideration to deal with problems.Patent (5) but be the welding cable of air guide simultaneously.One successively hollow pipe connects with flexible cord each other.Because the increase and the gas of area of dissipation are taken away a part of heat, the cable bearing capacity improves, weight saving.

The object of the invention is made every effort to a kind of like this flexible pipe of development, and this flexible pipe is the required seal wire of finishing, conduction, and multiple function synthesized such as air guide is considered, satisfies following requirement:

1, wire-feeder resistance is as much as possible little.

2, under the prerequisite that does not increase wire-feeder resistance, the gap is little between flexible pipe endoporus and welding wire, in case welding wire " storage " in pipe, when unexpected release, the stability of destructive process.

3, laterally should be soft as much as possible, flexibly crooked, but do not allow bending to exaggerate, form curvature half through too small dead folding.

4, longitudinal rigidity should be big as much as possible, in order to avoid length variations takes place when changing wire-feeder resistance.

5, weight is light as much as possible.

6, flexible pipe radially will have enough rigidity and intensity, so as not on the production building site because of colliding, jam on, squeeze the very fast damage of mill.

7, be difficult for to stop up, easy to maintenance etc.

Fig. 1 is a schematic diagram of the present invention.Flexible pipe is made up of many segment sleeve pipes (1), is linked with hinge by coupling sleeve (2) between sleeve pipe.Adjacent two hinges (3 _A, 3 _B) rotating shaft vertical mutually.Between coupling sleeve and sleeve pipe certain interval is being arranged on the rotary direction, adjacent like this two joint sleeve pipes can freely relatively rotate in certain limit to any direction, but after reaching this limit, because the restriction of coupling sleeve width, just can not be further crooked again.Do like this and can avoid forming curvature half through too small sharp turn folding, in order to avoid local wire-feeder resistance and wearing and tearing are sharply increased.The axle and the hole tolerance fit of hinge are suitable, make to rotate on freedom and flexibility ground, and it is loosening not have obvious gap again.Can guarantee that like this flexible pipe is laterally flexibly soft, and vertically under limited external force effect, not produce tangible elongation strain, influence feeding stability.The sleeve pipe cross section is the thin-walled cross, and horizontal vertical is alternately being adorned sleeve-barrel roollr (4), welding wire (5) are moved along the formed cavity center of roller in cross recess.The length that how much has determined sleeve pipe of roller in every joint sleeve pipe.In order to improve operating flexibility, flexible pipe allows bending to go through evil at close handgrip place, can select the sleeve pipe that roller is less, length is short for use.Can select for use roller more at a distance from handgrip, the sleeve pipe that length is long, formed radius of curvature is bigger, to reduce wire-feeder resistance.4 pairs of rollers are arranged in every joint sleeve pipe on Fig. 1.

Owing to the sliding friction that has replaced with rolling friction in the general flexible pipe, the wearing and tearing that reduced welding wire are peeled off, and have avoided the passage clogging, so wire-feeder resistance greatly reduces the wire feed process stabilization.Because rolling frictional resistance is little, therefore can make roller pitch from very approaching with gage of wire, the gap of staying is little far beyond general helix tube.Increase when wire-feeder resistance is accidental like this, as chew in conduction and bonding wire between when the fusion of local short time takes place, can not produce significant welding wire " storage " in flexible pipe yet.When this resistance suddenly disappears, can not discharge welding wire suddenly yet.In addition, allowing under the same maximum wire-feeder resistance condition, the wire feed distance can extend.

The axle of roller is lived with the casing wall weldering, has so also played the effect of supporting the thin-walled cross tee of reinforcing.

Welding cable (6) branch multiply is placed on four exterior angles of cross sleeve pipe, passes coupling sleeve.Cable in the longitudinal direction should be more loosening, makes sleeve pipe when any relative position, can not produce because of cable and tighten movable phenomenon of being obstructed, and cable becomes multiply increases the efficiently radiates heat area, adds the casing wall that is close to, CO ₂Gas also can be taken away a part of heat along the mobile grade inside and outside the sleeve pipe, so current carrying capacity greatly improves.Under same condition, the cross section is reduced, weight saving, rigidity reduces.When needing control line on the handgrip, also can put together with cable.

Whole hose overcoat corrugated sebific duct, its longitudinal section as shown in the figure.The outside is thick and hard, can be embedded into spring steel wire when being necessary.Inboard thin and soft.This sebific duct transverse curvature is flexibly soft, and along radial direction, enough strength and stiffness is arranged, to guarantee in production application, when flexible pipe is dragged on the building site of handgrip back, even suffer various possible accidental collisions, jam on, squeeze mill, also can not make inner sleeve distortion or damage.

This flexible pipe has reached aforementioned requirement to flexible pipe basically.

List of references:

1, Russian Patent 837660

2, United States Patent (USP) 3248515

3, Russian Patent 575186

4, Russian Patent 610629

5, Russian Patent 1063559

Claims (2)

1, is used for various electric arcs automatic and semi-automatic welding, particularly CO ₂The wire convey soft pipe of gas shielded arc welding.Flexible pipe is made up of many segment sleeve pipes (1), uses hinge (3 between sleeve pipe _A, 3 _B) connect, each sleeve pipe can relatively rotate, and sleeve-barrel roollr (4) is housed in the sleeve pipe, and welding wire (5) moves along roller.Feature of the present invention is:

The cross section of a, sleeve pipe is a cross.

B, roller are that horizontal vertical is alternately arranged.

C, Roller Shaft two ends and casing wall weldering are lived.

Coupling sleeve (2) is arranged between d, sleeve pipe, on the rotatable direction of sleeve pipe, between sleeve pipe and the coupling sleeve certain interval is arranged.

The rotating shaft of e, adjacent two hinges is vertical mutually.

The axle of f, hinge is suitable with the hole tolerance fit, can freedom and flexibility rotate, and does not have obvious gap again.

G, conductor wire branch multiply are placed on the sleeve pipe exterior angle.

H, overcoat corrugated sebific duct, the outside is thick and hard, and is inboard thin and soft.

2, according to the flexible pipe of claim 1, it is characterized in that:

Every joint sleeve pipe can be adorned one or more pairs of rollers as required.

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