CN2185176Y

CN2185176Y - Impulse wire feeder for welding

Info

Publication number: CN2185176Y
Application number: CN 93240635
Authority: CN
Inventors: 郑宝英
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-05
Filing date: 1993-10-05
Publication date: 1994-12-14
Anticipated expiration: 2003-10-05

Abstract

In the electric arc welding, compared with the normally used wire feed with equal speed, the impulse wire feed has a plurality of advantages, and the impulse wire feeder is provided with a speed reducing mechanism. The crank (3) with an eccentricity is driven to rotate by a motor, and three balls initiative clamping heads (7, 8) which do approximately repeat linear movement in the four connecting systems of a crank and a rock rod are matched with non-return clamping heads (11, 12), and the welding wire moves forward with sending and stopping by a pulsation way. A plurality of initiative and non-return clamping heads can increase the force and the reliability of the wire feeding. The clamping heads are made into integrated forms, and the assembly and disassembly are convenient.

Description

Impulse wire feeder for welding

The utility model belongs to welding equipment.Be mainly used in the automatic and semi-automatic arc weld of carbon dioxide and argon shield consumable electrode, also can be used as the silk filling device of nonconsumable electrode.

All need in the above-mentioned various welding method to carry welding wire, as filling metal material to electric arc.General commonly used conveying welding wire method is a constant-speed wire-feeding, that is to say that welding wire sends to invariable speed.Because some shortcomings that this method exists, as heavy reducing gear must be arranged, wire feed is apart from weak point, and wire feed instability etc. are just initial stage eighties people have begun the research to pulsed wire feeding.Pulsatile change is made in the motion of welding wire in pulsed wire feeding.Pulsed wire feeding removes that structure is simple, and wire-feeder resistance is little, beyond the wire feed distance, has also brought technologic benefits such as the droplet transfer is regular, therefore just is subjected to industrial great attention at the beginning, has proposed various pulsed wire feeding schemes.

The parts of the most frequently used clamping welding wire are three steel ball chucks in the pulsed wire feeding.With Russian Patent SU683114 is that the pulsating solder wire feeder of representative is exactly wherein a kind of.This wire-feed motor utilizes three steel ball chucks can only allow welding wire to pass through in a direction, the intransitable characteristic of another direction, and swing distortion welding wire reaches " advance-pause " purpose of pulsating motion of welding wire.But the wire feed step pitch of this wire feeder and welding wire mechanical performance are as its rigidity, relevant closely.The fluctuation of gage of wire and character all will cause the shakiness of wire feed step pitch.The welding wire serious wear, the iron end of falling down, copper scale makes it lose the ability of clamping welding wire very fast obstruction three steel ball chucks.

The purpose of this utility model is to improve the reliability of pulsating solder wire feeder work, and comprising the stability of step pitch over a long time, component wear and noise are little, and steel ball easily changes and is difficult for stopping up or the like.

Fig. 1 is said device front view.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is three steel ball chucks among Fig. 1.

Fig. 4 is a kind of three steel ball chucks of simplification.

Fig. 5 is three steel ball chucks of another simplification.

Fig. 6 is a kind of pulsating solder wire feeder of simplification.

Fig. 7 is the another kind of pulsating solder wire feeder of simplifying.

Fig. 8 is the pulsating solder wire feeder of another simplification.

(1) is the support of fixing in Fig. 1, and (2) are swinging blocks.Crank (3) and rocking bar (4) pass swinging block.Crank is by the direct driven rotary of motor.The off-centre of crank own is e ₁, be with the eccentric e that is above ₂Eccentric bushing.When the fixing angle of eccentric bushing changed, actual eccentric e can be adjusted.Make swinging block make circular motion herein by eccentric e.The rocking bar off-centre of the swinging block other end is e ₃All there is bearing (5) at crank (3) and rocking bar (4) two ends and support (1) and swinging block (2) place of linking, (bearing of center line one side of only drawing on the figure).Support (1), crank (3), swinging block (2), rocking bar (4) have been formed " crank-rocking bar " quadric chain.e ₃All be about 0.25 to 1.5 millimeter with the distance of two between centers much larger than e(e), so crank when rotation, swinging block is done the reciprocating motion of near linear.There is U type groove (6) at the swinging block middle part, lays one or more drive dog (7,8) in the groove, and drive dog is many more, and wire feed strength is just big more.For for simplicity, two have only been drawn among the figure.Chuck uses screw (9) to be fixed in the groove by pressing plate respectively.Chuck can unload from groove easily and get or load onto.Upward retaining chuck (11,12) also is housed on same center line at support (1) near rocking bar one end and drive dog.In order to prevent that the independent retaining chuck from skidding on a bit at welding wire, lose the retaining effect, the retaining chuck is also with many groups.The device direction of all chucks all should make welding wire (10) be passed through by the direction of " crank " sensing " rocking bar ".

When crank (3) rotated under motor drives, the swinging block band the reciprocating motion that drive dog is made near linear.As shown in Figure 1, when swinging block was swung to the right, welding wire was advanced by drive.When putting piece and swing left, welding wire is blocked by the retaining chuck, can not retreat.At this moment drive dog is slided behind welding wire, returns the original place.So just formed the pulsating motion of welding wire " advances to stop ".

Fig. 3 is said three steel ball chucks among Fig. 1, and drive dog all is identical with the retaining chuck structure.Chuck is made up of tapered sleeve (13), steel ball (14), retainer (15), spring (16) and guide pipe institutes such as (17).One end of retainer is cylindrical, inserts from tapered sleeve small-bore one side.This end of retainer has three along the equally distributed aperture of circumference, contains steel ball.Spring (16) makes steel ball be close to the tapered sleeve inclined-plane, makes chuck form an integral body, can unload from groove (6) individually and get or load onto.The retainer other end has flange, makes retainer keep coaxial with tapered sleeve.Guide pipe (17) is fixed on the shell of tapered sleeve (13), makes welding wire keep rectilinear form in chuck.

Fig. 4 is a kind of three steel ball chucks of simplification.Press spring, can from the hole, take out replacing to the guiding principle ball immediately.

Fig. 5 is three steel ball chucks of another simplification.Spring (16) is the dish shape, and Spring Card (18) is fixed steel ball by packing ring (19).

Fig. 6 is a kind of pulsating solder wire feeder of simplification, and image pattern 1 is the same, here also organic block (1), swinging block (2), crank (3), rocking bar (4), bearing (5) etc.Different is that crank (3) and rocking bar (4) all are cantilever beams, is supported on one side of support (1).For making the active force that acts on the welding wire,, leave bigger distance between crank and rocking bar, to hold the drive dog (7,8) on the swinging block to reduce the suffered moment of flexure of cantilever beam as far as possible near support.

Fig. 7 is the pulsating solder wire feeder of another simplification.Swinging block (2) directly is contained in the top of cantilever beam crank (3), there is not rocking bar, during the crank rotation, the drive dog (7) that is contained on the swinging block (2) is understood the reciprocating motion that make the guide rail near linear with welding wire, under the retaining chuck (11) on the support cooperates, cause the pulsating motion of welding wire " one advances to stop ".

Fig. 8 is the another kind of pulsating solder wire feeder of simplifying, and drive dog (7) is contained on the rotating cantilever beam of swinging block (2), can avoid welding wire to be subjected to bending like this.

Three steel ball pulsating solder wire feeders can send the welding wire of 0.5 to 2.5 millimeter of diameter, send 0.5 to 3 millimeter at every turn, and per second is sent to 1 to 50 time.

Claims

1, a kind of pulsed wire feeding device, it is by support (1), swinging block (2), drive dog (7,8), retaining chucks (11,12) etc. are formed, it is characterized in that swinging block (2) has crank (3) on one side, another side has rocking bar (4) to pass, and is with eccentric bushing on the eccentric shaft of crank (3), changes the fixed angle of eccentric bushing, can regulate the actual eccentric e of crank, the eccentric e of rocking bar (4) ₃Much larger than the eccentric e of crank, swinging block is done the reciprocating motion of near linear under crank drives, one or more drive dog (7,8) are housed on the swinging block, and one or more retaining chucks (11,12) are housed on the support.

2, by the said device of claim 1, it is characterized in that swinging block (2) is contained in cantilever beam crank (3) top, drive dog (7) is that guide rail moves back and forth with the welding wire.

3, by the said device of claim 1, it is characterized in that chuck is by tapered sleeve (13), steel ball (14), retainer (15), spring (16) and guide pipe (17) etc. are formed, retainer one end is columniform, insert from tapered sleeve small-bore one side, three apertures are arranged on this end of retainer, contain steel ball, spring (16) makes steel ball be close to the tapered sleeve inclined-plane, makes chuck form an integral body.