CN2514961Y

CN2514961Y - Cross section changing H type steel welding seam imitation tracking welding apparatus

Info

Publication number: CN2514961Y
Application number: CN 01279626
Authority: CN
Inventors: 云春来
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-29
Filing date: 2001-12-29
Publication date: 2002-10-09
Anticipated expiration: 2011-12-29

Abstract

A welding seam profile tracking welding device for variable cross-section H-shaped steel comprises a clamping actuating mechanism, a displacement mechanism and a torch, wherein the clamping actuating mechanism is composed of a base, a triaxiality drive box, a servo hydraulic cylinder, a slave ram and a uniaxial box, the displacement mechanism can have slave displacement according to the variation along Y axis of the dimension of a workpiece and is composed of a transmission mechanism for the variation of the dimension of the workpiece, a servo slide valve equipped with a lever arm, a servo hydraulic cylinder controlled by the servo slide valve, a slave ram fixed on the servo hydraulic cylinder and a uniaxial box fixed at the front end of the slide ram. The workpiece is clamped between the triaxiality drive box and the uniaxial box, the clamping force is provided by the servo hydraulic cylinder and the workpiece is drove by the triaxiality box to move along positive direction of X axis, the variation of the dimension is transferred by a contactor connecting with the workpiece through a connecting rod, a rod sleeve, a slide rod and a slide rod arm which are connected to the contactor, thereby the servo hydraulic cylinder controlled by the servo slide valve and the slave slide ram, the uniaxial box and the torch which are fixedly connected with the servo hydraulic cylinder can have the same displacement along Y axis as the variation which ensures that the torch can achieve profile tracking along welding seams.

Description

Variable cross-section H shaped steel weld seam profile tracking welder

Technical field:

The utility model relates to welding equipment, and relating in particular to the workpiece weld seam is broken line or curved weld seam profile tracking welder.

Technical background:

Since the eighties, sustained and rapid development along with Chinese national economy, use extensive day by day with industrial premises steel construction, high-rise building steel structure, residential houses steel construction, bridge steel structure etc., the demand of H shaped steel grows with each passing day, and the pattern and the quality requirement of H shaped steel are also had higher requirement.

At present, the homemade H type steel production line of China comprises cutting, mills the limit, binding (group is upright), welding, the several workshop sections of shaping, and with pipeline system production.But, wherein welding bay is because of being subjected to device-restrictive, still adopt the unit operation: by two parallel wing plates be clipped between two wing plates and 45 ° of the upright part upsets of H shaped steel group formed with the perpendicular web of wing plate, welding torch carries out ship shape and welds (as shown in Figure 3) to aiming at the weld seam of wing plate with the web intersection with vertical; Because of each workpiece has four weld seams, need can finish through four upsets, welding, not only work efficiency is extremely low for this, and very easy generation distortion.When variable cross-section H shaped steel is implemented welding,, can only adopt the lower manual welding of work efficiency, the problems of welded quality that produces and the Chang Fashengyin melting welding degree of depth is inconsistent because of weld seam becomes broken line shape or shaped form.At present, the welding equipment of this backwardness has become the H type steel production line to enhance productivity and has ensured the restriction key factor of product quality.

Summary of the invention:

The problem that work efficiency is low and difficult quality is definitely ensured at welding bay existence in the present domestic self-control H type steel production line, the purpose of this utility model is: design and provide a kind of and can be complementary with other workshop section of homemade H type steel production line, variable cross-section H shaped steel weld seam profile tracking welder simple in structure, to satisfy the needs of double-torch flat fillet weld technology, improve welding efficiency and welding quality.

For achieving the above object, the utility model adopts following design:

Because main member of this device and welded piece are all in motion state, convenient and clear in order to narrate, so earlier coordinate is determined as follows: this device base plane is plane, right hand orthogonal coordinate system place, workpiece transmission direction of advance is the X-axis forward, the Y-axis forward is rotated counterclockwise 90 ° for the X-axis forward, and the vertical XOY plane of Z axle forward upwards.

Variable cross-section H shaped steel weld seam profile tracking welder of the present utility model by with workpiece along Y-axis to clamping and along the clamping transmission mechanism of X-axis forward transmission, change and constitute along the displacement mechanism and the welding torch of Y direction servo-actuated with the upright workpiece Y direction size of group; Described group of upright part Y-axis be to clamping and be made of the pedestal of welder, three driving box, servo-cylinder, servo-actuated ram, single shaft casees along the clamping transmission mechanism of X-axis forward transmission, changes and comprise the upright part Y direction size change amount transmission mechanism of group, the servo guiding valve that is provided with lever arm, the servo-cylinder that is controlled by servo guiding valve, servo-actuated ram and single shaft case along the displacement mechanism of Y direction servo-actuated to size with the upright part Y-axis of group; Above-mentioned each assembly and assemble as follows: described welder, its pedestal length is joined with the upright equipment work-piece outlet of group to and its workpiece inlet parallel with Y-axis, the Y-axis forward end of pedestal is equipped with three driving box, the middle front part of pedestal is upright part inlet of group and the upright part passage of group, the pedestal middle part is provided with two guide rails parallel with Y-axis with the rear portion, servo-cylinder, the single shaft case one that the servo-actuated ram that is fixed in the servo-cylinder front end and insulation are fixed in the ram front end is installed on the guide rail and becomes slip to cooperate with guide rail, with the piston rod that the servo-cylinder inner carrier joins, the one end is fixed in the rear portion of pedestal; Described three driving box, on it three axles be axial line with the same plane of ZOX plane parallel in isometrical axle, and be provided with travelling gear between the adjacent diaxon, wherein one links with reducing motor; Described group of upright part Y-axis is made of contact, connecting rod, connection pole socket, slide bar, jack rod sleeve, slide bar arm to size change amount transmission mechanism; Contact is falcate, and have and the smooth tangent front end of workpiece, it becomes affixed with the connecting rod that X-axis parallels, connecting rod be connected pole socket and become slip but be not rotatably connected, connect the pole socket end be provided with one with the X of connecting rod associative structure to set screw, it is affixed with a slide bar parallel with Y-axis that this connects pole socket, and the rear portion of slide bar is connected with a perpendicular and slide bar arm that can touch mutually with the servo guiding valve lever edge of a knife, and this slide bar arm is provided with and can changes the adjusting bolt of its Y-axis to the position; Described group of upright part Y-axis is to size change amount transmission mechanism, wherein the slide bar that parallels with Y-axis be separately fixed at single shaft and cooperate with slip that insulation jack rod sleeve on the servo-actuated ram all cannot not become rotatablely and connect, be provided with tension spring at the insulation jack rod sleeve that is contained on the single shaft case between the pole socket with being connected; Single shaft in the single shaft case, it can have an annular deep trouth with the upright contacted part of part of group, and contact is contained on the position, the left and right sides, deep trouth front end axle center; Described two welding torches are separately fixed at three driving box front portions and become 35 °～40 ° angles with single shaft case front portion and with wing plate.

In the device of said structure, the upright part of group moves to the X-axis forward with constant speed, and the servo-actuated ram constantly passes to its Y-axis the servo guiding valve lever of control servo-cylinder to change in size amount signal when the upright part wing plate of contact and group contacts; Servo-cylinder is promptly made 1.1 synchronous shift voluntarily under the effect of workpiece size change amount, thereby reaches the effect of profile tracking.Though it is existing historical for many years to be used for copying with the servo-cylinder system in mechanical industry, and goodish precision is arranged, but can not be very little owing to used single shaft radius in this device is subjected to the intensity restriction, thus some errors are arranged, but error amount is all in the scope that weld job allows.

Description of drawings:

Fig. 1---variable cross-section H shaped steel weld seam profile tracking welder stereogram of the present utility model.

Fig. 2---the fundamental diagram when the main structural representation of this profile tracking welder is outwards rolled over.

Fig. 3---unit weld job schematic diagram.

Fig. 4---wing plate is rolled over the fundamental diagram at α angle outward.

Fig. 5---the fundamental diagram when invagination β angle.

The specific embodiment:

Example 1. has been made a variable cross-section H shaped steel weld seam profile tracking welder model machine as shown in Figure 1 by above-mentioned design in person.During use, to become horizontal state slowly to move into welder with web from organizing the upright workpiece of group that upright workshop section sends here along the X-axis forward earlier, and the side that wing plate is flat face is close to three axles of three driving box 1, the lever 12 of the servo guiding valve of crawl makes to be fixed in and slowly moves, compresses until single shaft 4.8 the opposite side wing plate of the upright workpiece of group along the Y-axis forward in company with ram 3 and the single shaft case 4 that is fixed in the ram front end on the servo-cylinder 11; At this moment, by the grease chamber, front and back that is separated by piston in the servo-cylinder 11 following relation is arranged: preceding cavity pressure+chucking power=back cavity pressure.To do the adjustment at zero point to size change amount transmission mechanism to organizing upright part Y-axis earlier; Connection pole socket 7.2 connecting rods 7.1 that are contained in slide bar 9 ends move forwards under the effect of spring 8 and make contact 7 just touch group and stand the part surface Y-axis that turns slide bar arm 10 to regulating bolt 10.1 to make slide bar arm 10 just touch the edge of a knife of lever 12 of servo guiding valve 6; Lean on the live telecast of single shaft case one side wing to determine contact position for straight plane according to the wing plate perseverance of leaning on three axle boxes, one side in the wing plates on two sides of the upright workpiece of group then: also to be straight wing plate 1. if lean on the wing plate of single shaft case one side by adjusting the set screw 7.3 that connects on the pole socket 7.2, then contact position should be got the X value identical with single shaft case shaft centre line, and welding torch 2,5 is also got and identical X value; 2. if form with the wing plate that extends out that becomes the α angle with it by straight flat wing plate as shown in Figure 4 by the wing plate of single shaft one side, then contact 7 should be from the single shaft axle center X value on the throne move to the X-axis negative sense (γ is the single shaft radius), welding torch is also made same displacement; 3. if leaning on the wing plate of single shaft one side is the wing plate formation of straight wing plate and the inside contraction that becomes the β angle with it, then contact 7 should move to the X-axis forward from place, single shaft axle center X value

(γ is the single shaft radius), welding torch is also made same displacement, 4. for the shaped form wing plate, because of its each point radius of curvature much larger than the single shaft radius, and its derivative is continuous, its processing is 1. identical with situation.

In actual job, because of the upright part of variable cross-section H shaped steel group, when one side wing is broken line, its knuckle α or β all less than 12 ° the value of γ less than 100mm, the welding torch that causes therefrom and the variation of welding seam distance are less than 2mm, welding torch is that the variable angle of wing plate is less than 7 °, all in the error range that welding allows.Simple, the low price and very practical of this apparatus structure, it is suitable for flat fillet weld technology, and can weld two seams simultaneously so work efficiency height, advantage that quality is high are arranged, and has realized goal of the invention fully.

Claims

1, a kind of variable cross-section H shaped steel weld seam profile tracking welder is characterized in that: it by with workpiece along Y-axis to clamping and along the clamping transmission mechanism of X-axis forward transmission, change and constitute along the displacement mechanism and the welding torch of Y direction servo-actuated with the upright workpiece Y direction size of group; Described group of upright part Y-axis be to clamping and be made of the pedestal of welder, three driving box, servo-cylinder, servo-actuated ram, single shaft casees along the clamping transmission mechanism of X-axis forward transmission, changes and comprise the upright part Y direction size change amount transmission mechanism of group, the servo guiding valve that is provided with lever arm, the servo-cylinder that is controlled by servo guiding valve, servo-actuated ram and single shaft case along the displacement mechanism of Y direction servo-actuated to size with the upright part Y-axis of group; Above-mentioned each assembly and assemble as follows: described welder, its pedestal length is joined with the upright equipment work-piece outlet of group to and its workpiece inlet parallel with Y-axis, the Y-axis forward end of pedestal is equipped with three driving box, the middle front part of pedestal is upright part inlet of group and the upright part passage of group, the pedestal middle part is provided with two guide rails parallel with Y-axis with the rear portion, servo-cylinder, the single shaft case one that the servo-actuated ram that is fixed in the servo-cylinder front end and insulation are fixed in the ram front end is installed on the guide rail and becomes slip to cooperate with guide rail, with the piston rod that the servo-cylinder inner carrier joins, the one end is fixed in the rear portion of pedestal; Described three driving box, on it three axles be axial line with the same plane of ZOX plane parallel in isometrical axle, and be provided with travelling gear between the adjacent diaxon, wherein one links with reducing motor; Described group of upright part Y-axis is made of contact, connecting rod, connection pole socket, slide bar, jack rod sleeve, slide bar arm to size change amount transmission mechanism; Contact is falcate, and have and the smooth tangent front end of workpiece, it becomes affixed with the connecting rod that X-axis parallels, connecting rod be connected pole socket and become slip but be not rotatably connected, connect the pole socket end be provided with one with the X of connecting rod associative structure to set screw, it is affixed with a slide bar parallel with Y-axis that this connects pole socket, and the rear portion of slide bar is connected with a perpendicular and slide bar arm that can touch mutually with the servo guiding valve lever edge of a knife, and this slide bar arm is provided with and can changes the adjusting bolt of its Y-axis to the position; Described group of upright part Y-axis is to size change amount transmission mechanism, wherein the slide bar that parallels with Y-axis be separately fixed at single shaft and cooperate with slip that insulation jack rod sleeve on the servo-actuated ram all cannot not become rotatablely and connect, be provided with tension spring at the insulation jack rod sleeve that is contained on the single shaft case between the pole socket with being connected; Single shaft in the single shaft case, it can have an annular deep trouth with the upright contacted part of part of group, and contact is contained on the position, the left and right sides, deep trouth front end axle center; Described two welding torches are separately fixed at three driving box front portions and become 35 °～40 ° angles with single shaft case front portion and with wing plate.