CN115815860A - Nonrust steel pipe welding set - Google Patents
Nonrust steel pipe welding set Download PDFInfo
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- CN115815860A CN115815860A CN202211466661.4A CN202211466661A CN115815860A CN 115815860 A CN115815860 A CN 115815860A CN 202211466661 A CN202211466661 A CN 202211466661A CN 115815860 A CN115815860 A CN 115815860A
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- 238000003466 welding Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 title claims description 11
- 239000010959 steel Substances 0.000 title claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 185
- 239000010935 stainless steel Substances 0.000 claims abstract description 185
- 238000003825 pressing Methods 0.000 claims abstract description 109
- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000002788 crimping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002337 anti-port Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Abstract
The invention discloses a stainless steel pipe welding device, which comprises a workbench, welding equipment and a positioning mechanism, wherein the positioning mechanism comprises two supporting seats and two pressing block mechanisms, the two supporting seats are arranged at the front end and the rear end of the workbench, a V-shaped block connected with the supporting seats through lifting oil cylinders is arranged on the supporting seats, working cavities at the lower parts of the front lifting oil cylinder and the rear lifting oil cylinder are communicated through a balance pipeline, a control valve is arranged on the balance pipeline, and the welding method of a stainless steel pipe comprises the following steps: placing a stainless steel tubular blank on the front and rear V-shaped blocks, pressing the upper sides of the front and rear ends of the stainless steel tubular blank by the front and rear pressing block mechanisms so as to clamp and position the stainless steel tubular blank, keeping the same height, and then closing the control valve to keep the front and rear axial openings of the stainless steel tubular blank in a horizontal state; the welding equipment forms a welding seam at the axial opening of the stainless steel tubular blank. The invention can effectively avoid the problems of inconsistent shapes and sizes of the welding seams of the stainless steel pipes, easy leakage and the like.
Description
Technical Field
The invention relates to the technical field of steel pipe manufacturing, in particular to a stainless steel pipe welding device.
Background
Large stainless steel pipes are generally produced by the following method: firstly, a stainless steel plate is manufactured, the length of the stainless steel plate is slightly larger than that of the stainless steel pipe, the width of the stainless steel plate is equal to the circumference of the stainless steel pipe, then the stainless steel plate is rolled into a tubular blank with an axial opening, and then the axial opening of the tubular blank is welded together by welding equipment, so that the initial product of the stainless steel pipe can be manufactured. And then polishing the welding seam, cutting to a specified length, carrying out a pressure resistance test and the like to obtain a finished stainless steel pipe.
It will be appreciated that when welding the axial opening with the welding device, it is necessary to position the tubular blank with the axial opening horizontally and on a welding table to ensure that the welding head of the welding device, which is maintained at a constant height, will weld a weld seam of uniform width and quality at the axial opening of the tubular blank. However, in the prior art, the following technical drawbacks exist when welding tubular blanks of stainless steel: firstly, because the stainless steel tube is longer in length and larger in tube diameter, the stainless steel tubular blank which is placed on a welding table and is provided with an axial opening and is not welded has poorer rigidity; secondly, certain form and position errors can exist when the stainless steel plate is bent into a tubular blank with an axial opening, so that the problem that the height of the axial opening, the width and the like of the stainless steel tubular blank which is not welded and is placed on a welding table are inconsistent easily occurs, the shape and the size of a final welding seam are inconsistent, the welding quality is affected, and the condition of fluid leakage in the using process can even occur in severe cases.
Disclosure of Invention
The invention aims to provide a stainless steel pipe welding device which can effectively avoid the problems of inconsistent shape and size of a welding seam, easy leakage and the like caused by the shape and position error of a stainless steel pipe which is formed by coiling a stainless steel plate and has an axial opening.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a nonrust steel pipe welding set, includes the workstation, sets up welding equipment on the workstation, is used for the positioning mechanism of location, centre gripping stainless steel tubulose blank, positioning mechanism includes two bearings, two briquetting mechanisms, and two bearings, two briquetting mechanisms set up both ends around the workstation respectively, are equipped with the V-arrangement piece of liftable on the bearing, the V-arrangement piece is connected with the bearing through lift cylinder, and the working chamber of two lift cylinder lower parts is linked together through balanced pipeline around, is equipped with the control valve on balanced pipeline, welding equipment includes the movable guide rail of following the workstation fore-and-aft direction and arranges, sets up the automatic weld machine on movable guide rail, the welding method of nonrust steel pipe includes following step:
a. opening a control valve, placing the stainless steel tubular blank on the front and rear V-shaped blocks, enabling the axial opening of the stainless steel tubular blank to be upward, pressing the upper sides of the front and rear ends of the stainless steel tubular blank by the front and rear pressing block mechanisms, clamping and positioning the stainless steel tubular blank, keeping the same height, and then closing the control valve to enable the axial opening of the stainless steel tubular blank to be kept in a horizontal state;
b. the automatic welder was started and moved from front to back to form a weld at the axial opening of the stainless steel tubular blank.
It is known that, because a stainless steel tubular blank has a certain form and position error, when we place and position it on a workbench, even if the workbench is horizontal, the axial opening at the upper side of the stainless steel tubular blank cannot be ensured to be in a horizontal state with the same height in front and back.
The invention creatively arranges a V-shaped block connected with the supporting seat through the lifting oil cylinder on the workbench, the working cavities at the lower parts of the front and the rear lifting oil cylinders are communicated through a balance pipeline, and the balance pipeline is provided with a control valve capable of controlling the on-off state. Therefore, when the axial opening of the stainless steel tubular blank needs to be welded, the stainless steel tubular blank can be placed on the front V-shaped block and the rear V-shaped block to realize automatic centering and positioning. Since the control valve is in the on state at this time, the front and rear V-blocks are in the "floating" state in the height direction. The front and the rear briquetting mechanisms can be conveniently pressed and connected with the upper sides of the front and the rear ends of the stainless steel tubular blank, so that the stainless steel tubular blank is clamped and positioned, and the axial openings on the upper sides are kept at the same height. Then the control valve enters a cut-off state, the V-shaped block cannot continuously float in the height direction at the moment and is positioned, and a welding seam with the same width is formed at the welding position of the axial opening by using an automatic welding machine, so that the quality problem of the welding seam caused by the form and position error of the stainless steel tubular blank is effectively avoided.
It should be noted that the control valve may be a manual valve or a solenoid valve, so as to facilitate automatic control.
Preferably, the device further comprises a height adjusting mechanism, wherein the height adjusting mechanism comprises a front lifting height-fixing block and a rear lifting height-fixing block which are arranged on the movable guide rail, and the step a is as follows: opening the control valve, placing the stainless steel tubular blank on two V-shaped blocks in front and back, the axial opening of the stainless steel tubular blank is up at this moment, two height fixing blocks abut against the upper sides of the stainless steel tubular blank before and after lifting, so that the upper sides of the front end and the rear end of the stainless steel tubular blank are kept at the same height, then closing the control valve, so that the front end and the rear end of the stainless steel tubular blank are kept in a horizontal state, then the front pressing block mechanism and the rear pressing block mechanism abut against the upper sides of the front end and the rear end of the stainless steel tubular blank, then removing the height adjusting mechanism, and clamping and positioning the stainless steel tubular blank by the two pressing block mechanisms.
As described in the background art, even if the table on which the stainless steel tubular blank is placed and positioned and the front and rear V-blocks are in an ideal horizontal state, the difference in the height of the axial opening is caused by the form and position error of the stainless steel tubular blank. For this purpose, the invention makes the front and back V-shaped blocks in the floating state, so that the stainless steel tubular blanks placed on the front and back V-shaped blocks are also in the floating state. Furthermore, the invention also comprises a height adjusting mechanism, when the front and the rear liftable height-fixing blocks of the height adjusting mechanism synchronously descend and press against the upper side of the stainless steel tubular blank, the stainless steel tubular blank in a floating state can conveniently and automatically adjust the levelness of the axial opening, thereby ensuring the consistency of the welding seams. That is, only when the height adjusting mechanism keeps the stainless steel tubular blank in a horizontal state in the front and rear directions, the front and rear two pressing block mechanisms can be pressed against the upper sides of the front and rear ends of the stainless steel tubular blank, so that the stainless steel tubular blank is clamped and positioned in the horizontal state.
Preferably, the pressing block mechanism comprises a left pressing block and a right pressing block which are arranged on the movable guide rail in a vertically synchronous moving mode, and when the left pressing block and the right pressing block are lifted vertically, the left pressing block and the right pressing block can be abutted against the left side and the right side of the axial opening of the stainless steel tubular blank, so that the axial opening can be conveniently welded by an automatic welding machine.
Because the briquetting mechanism includes two briquetting about can setting up on the moving guide rail with upper and lower synchronous motion, consequently, when height adjusting mechanism made stainless steel tubular blank keep the horizontality around, two briquetting about the briquetting mechanism just can the crimping stainless steel tubular blank upside at both ends around to press from both sides tightly the location at the horizontality with stainless steel tubular blank.
It should be noted that, the height adjusting mechanism can press the upper side of the stainless steel tubular blank with "force", and at this time, the subsequent left and right pressing blocks only need to press the upper side of the pressed stainless steel tubular blank just. When the height adjusting mechanism is removed, the stainless steel tubular blank can elastically reset to be tightly abutted against the left pressing block and the right pressing block for clamping and positioning.
Preferably, the pressing block comprises a vertical section which is arranged on the movable guide rail in a vertically movable mode and a transverse section which is formed by bending the top end of the vertical section inwards, so that the pressing block is 7-shaped, a radial positioning ball which can move up and down is arranged on the vertical section, the radial positioning ball is oppositely arranged on the inner sides of the vertical sections of the left pressing block and the right pressing block, and when the left pressing block and the right pressing block lift up and down and press the left side and the right side of an axial opening of the stainless steel tubular blank, the radial positioning ball is located on the horizontal radial direction of the stainless steel tubular blank and presses against the outer side wall of the stainless steel tubular blank.
Because the pressing blocks are inverted L-shaped, the transverse sections of the left pressing block and the right pressing block can conveniently press the upper side of the stainless steel tubular blank. It is known that, for a stainless steel tubular blank with certain elasticity, when the stainless steel tubular blank is subjected to a force in the vertical direction, the horizontal radial dimension of the stainless steel tubular blank bulges outwards and becomes larger. Therefore, the radial positioning ball is creatively arranged on the vertical section and is oppositely arranged at the inner sides of the vertical sections of the left pressing block and the right pressing block. In this way we can adjust the height of the radial location ball on the vertical section in advance. When the transverse sections of the left and right pressing blocks move downwards to press the upper side of the stainless steel tubular blank, the radial positioning balls are just positioned in the horizontal radial direction of the stainless steel tubular blank and press the outer side wall of the stainless steel tubular blank, so that the horizontal radial dimension consistency of the stainless steel tubular blank is ensured, and the stainless steel tubular blank has extremely high rigidity and the consistency of the axial opening width.
Of course, the radial positioning ball can move up and down in the vertical section and can move left and right in the horizontal direction so as to adapt to welding of stainless steel tubular blanks with different pipe diameters.
Preferably, the briquetting mechanism comprises a synchronous screw and a vertical lifting screw movably arranged on the movable guide rail, a lifting screw sleeve is arranged on the lifting screw, a worm wheel is arranged outside the lifting screw sleeve, and a worm meshed with the worm wheel outside the lifting screw sleeve of the corresponding briquetting mechanism is arranged at the front end and the rear end of the synchronous screw.
When two briquetting mechanisms around need reciprocating, rotatable synchronous screw rod to drive the synchronous rotation of lift swivel nut, reciprocate in step on the lift screw rod then, make things convenient for the synchronous lift of two briquetting mechanisms then.
Preferably, the movable guide rail is provided with a vertical adjusting column, the pressing block mechanism comprises a lifting sleeve sleeved on the adjusting column, two fastening nuts which are screwed on the adjusting column and are positioned on the upper side and the lower side of the lifting sleeve, vertical supporting rods are respectively arranged on the left side and the right side of the lifting sleeve, the upper end of each supporting rod is provided with a pressing block which can rotate upwards, the pressing block is attached to the corresponding supporting rod, a limiting structure is arranged between the pressing block and the corresponding supporting rod, when the pressing block mechanism needs to be pressed on the upper sides of the front end and the rear end of a stainless steel tubular blank, the pressing block is rotated upwards firstly, the limiting structure enables the pressing block to be positioned in the transverse direction, the fastening nuts on the lower side of the lifting sleeve are rotated downwards, then the fastening nuts on the upper side of the lifting sleeve are rotated downwards to enable the lifting sleeve to move downwards until the pressing block is pressed on the upper side of one end of the stainless steel tubular blank, and then the fastening nuts on the lower side of the lifting sleeve are screwed tightly, so that the lifting sleeve is positioned in the height direction.
When we need press from both sides tight location with stainless steel tubular blank through briquetting mechanism, can make the briquetting of briquetting mechanism be located stainless steel tubular blank's top earlier, then the fastening nut of downwards rotating lift cover downside, can make the lift cover drive the briquetting through branch and move down, until the briquetting supports the upside of pressing stainless steel tubular blank, the fastening nut who downwards rotates lift cover upside this moment makes the lift cover move down, until the upside of briquetting butt stainless steel tubular blank, then the fastening nut of screwing up lift cover downside, can make the lift cover fix a position in the direction of height.
It should be noted that the pressing block of the present invention is rotatably disposed at the upper end of the supporting rod, so that, in an initial state, the pressing block is attached to the supporting rod under the action of its own weight, thereby facilitating the stainless steel tubular blank to be placed on the V-shaped block through the supporting rod having the pressing block at the left side or the right side, and then the pressing block is rotated upward and positioned in a transverse direction (substantially horizontal direction) through the limiting structure.
Preferably, the diameter of the stainless steel pipe is D, in the step a, the front and rear pressing block mechanisms move downwards to press one end of the stainless steel tubular blank firstly, then move downwards to press the other end of the stainless steel tubular blank continuously, at the moment, the front and rear pressing block mechanisms move downwards continuously for a distance h, and h is more than or equal to 0.01D and less than or equal to 0.03D, and then clamp and position the stainless steel tubular blank and keep the same height.
When the front and the rear pressing block mechanisms move downwards respectively and abut against the front and the rear ends of the stainless steel tubular blank, the front and the rear pressing block mechanisms move downwards continuously by a distance h, so that the pressing blocks press the stainless steel tubular blank tightly, and the clamping and the positioning of the stainless steel tubular blank are facilitated, and the difference of the front and the rear pipe diameters caused by the form and position errors of the stainless steel tubular blank is eliminated.
Therefore, the invention has the following beneficial effects: the problems that the shape and the size of a welding seam are inconsistent and the leakage phenomenon is easy to occur due to the shape and position error of the stainless steel pipe with the axial opening formed by bending the stainless steel plate can be effectively avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a structure of the height adjusting mechanism.
FIG. 3 is a schematic diagram of a press mechanism.
Fig. 4 is a schematic view of a stainless steel tubular blank.
Fig. 5 is a schematic view of a connection structure of the synchronous screw and the lifting screw sleeve.
Fig. 6 is another structural schematic diagram of the pressing block mechanism.
In the figure: 1. the device comprises a workbench 2, a welding device 21, a movable guide rail 22, an automatic welding machine 23, an adjusting column 3, a supporting seat 31, a V-shaped block 32, a lifting oil cylinder 4, a pressing block mechanism 41, a pressing block 411, a vertical section 412, a transverse section 42, a radial positioning ball 43, a lifting sleeve 44, a fastening nut 45, a supporting rod 5, a height adjusting mechanism 51, a height fixing block 6, a synchronous screw 7, a lifting screw 8, a lifting screw sleeve 9, a stainless steel tubular blank 91, a width fixing salient point 92 and an axial opening.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, a stainless steel pipe welding apparatus is adapted to weld together axial openings of a stainless steel tubular blank formed by bending a stainless steel plate so as to form a stainless steel pipe having a uniform weld line. The device comprises a workbench 1, welding equipment 2 arranged on the workbench, and a positioning mechanism for positioning and clamping the stainless steel tubular blank, wherein the positioning mechanism comprises two supporting seats 3 and two pressing block mechanisms which are respectively arranged at the front end and the rear end of the workbench, namely, the front end of the workbench is provided with the pressing block mechanism and the supporting seat, and the rear end of the workbench is provided with the pressing block mechanism and the supporting seat. In addition, a V-block 31 is provided on the support base, and the V-block is connected to the support base by a lift cylinder 32 so as to be movable up and down on the support base.
It should be noted that, the upper side of the V-block is provided with a V-groove running through the front and back direction, and the welding device can adopt the existing automatic welding machine for welding the axial opening of the stainless steel tubular blank. Since it belongs to the prior art, the present embodiment will not be described in detail.
In addition, the working chambers at the lower parts of the front and the rear lifting cylinders are communicated through a balance pipeline (not shown in the figure), a control valve (not shown in the figure) capable of controlling on-off is arranged on the balance pipeline, and the welding equipment comprises a movable guide rail 21 and an automatic welding machine 22, wherein the movable guide rail 21 is arranged along the front and the rear directions of the workbench, and the automatic welding machine is arranged on the movable guide rail. The welding method of the stainless steel pipe comprises the following steps:
a. and opening the control valve to communicate the working cavities at the lower parts of the front and the rear lifting cylinders, wherein the V-shaped block on the lifting cylinder is in a floating state in the height direction. Then the stainless steel tubular blank 9 is hoisted on the workbench, and the stainless steel tubular blank is supported and positioned on the V-shaped grooves of the front and the rear V-shaped blocks, of course, the axial opening 92 of the stainless steel tubular blank is upward at the moment so as to facilitate the welding of the subsequent welding equipment. In addition, the front and rear two briquetting mechanisms are in compression joint with the upper sides of the front and rear ends of the stainless steel tubular blank so as to clamp and position the stainless steel tubular blank, the axial opening of the upper side of the stainless steel tubular blank keeps the same height in the front and rear directions, then the control valve is closed, the V-shaped block on the lifting oil cylinder is in a locking state in the height direction, and the front and rear axial openings of the stainless steel tubular blank are always kept at the same height. That is, the axial opening is horizontal at this time;
b. and starting the automatic welding machine, and moving the automatic welding machine from front to back along the moving guide rail, so that a welding seam is formed at the axial opening of the stainless steel tubular blank.
It should be noted that the control valve may be a manual valve or a solenoid valve, so as to facilitate automatic control. In addition, we refer to the direction in which the stainless steel tubular blank is placed on the table as the longitudinal or front-rear direction, and the other direction as the lateral or left-right direction.
As a preferable scheme, as shown in fig. 2, the present invention further comprises a height adjusting mechanism 5, wherein the height adjusting mechanism comprises a front lifting fixed-height block 51 and a rear lifting fixed-height block 51 which are arranged on the movable guide rail, and step a is as follows: opening the control valve, placing stainless steel tubular blank on two V-arrangement pieces in front and back, the axial opening of stainless steel tubular blank up this moment, two height blocks around going up and down make height block butt and compress tightly stainless steel tubular blank upside, make the upside at both ends keep the same height around the stainless steel tubular blank, stainless steel tubular blank at this moment can produce little elastic deformation in the upper and lower direction. And then closing the control valve to keep the V-shaped block in a locking state, keeping the front and the back of the stainless steel tubular blank in a horizontal state, abutting the front and the back pressing block mechanisms against the upper sides of the front and the back ends of the stainless steel tubular blank, removing the height adjusting mechanism, elastically restoring the stainless steel tubular blank to slightly bounce, and clamping and positioning the stainless steel tubular blank by the two pressing block mechanisms.
That is to say, the pressing in this embodiment means that two objects are just attached to each other, and the pressing or abutting means that the two objects are tightly attached to each other in a pressing manner.
The invention comprises an independent height adjusting mechanism, so that the front and rear heights of the upper axial opening of the stainless steel tubular blank can be conveniently adjusted, and the front and rear heights of the upper axial opening of the stainless steel tubular blank can be kept consistent by the briquetting mechanism.
As another preferable scheme, as shown in fig. 3, the pressing block mechanism includes a left pressing block 41 and a right pressing block 41 which are disposed on the movable guide rail and can move up and down synchronously, and when the left pressing block and the right pressing block move up and down, the left pressing block and the right pressing block can abut against the left side and the right side of the axial opening of the stainless steel tubular blank, so that the axial opening in the middle of the upper side of the stainless steel tubular blank is prevented from being covered, and the axial opening can be conveniently welded by an automatic welding machine.
It should be noted that, when the height adjusting mechanism and the pressing block mechanism are pressed against the upper side of the stainless steel tubular blank, the radial dimension of the stainless steel tubular blank has a slight elastic deformation. To this end, as shown in fig. 4, a plurality of constant width protrusions 91 may be formed on one side of the steel plate for rolling into a stainless steel tubular blank. When the stainless steel plate is rolled into a stainless steel tubular blank and is pressed and connected by the height adjusting mechanism and the pressing block mechanism, the fixed-width salient points on one side of the axial opening abut against the other side of the axial opening, so that the width of the axial opening can be accurately measured.
Further, the diameter of the stainless steel tube is D, in the step a, the front and rear pressing block mechanisms move downwards to press one end of the stainless steel tubular blank firstly, then move downwards to press the other end of the stainless steel tubular blank continuously, at the moment, the front and rear pressing block mechanisms move downwards continuously for a distance h, h is more than or equal to 0.01D and less than or equal to 0.03D, then the stainless steel tubular blank is clamped and positioned, the same height is kept, the front and rear pipe diameter difference caused by the form and position error of the stainless steel tubular blank is eliminated, and meanwhile, the serious deformation caused by radial over-extrusion of the stainless steel tubular blank is avoided.
When the front and the rear pressing block mechanisms move downwards respectively and press the front and the rear ends of the stainless steel tubular blank, the front and the rear pressing block mechanisms move downwards continuously by a distance h, so that the pressing blocks press the stainless steel tubular blank tightly, and the clamping and the positioning of the stainless steel tubular blank are facilitated, and the difference of the front and the rear pipe diameters caused by the form and position errors of the stainless steel tubular blank is also facilitated to be eliminated.
Furthermore, as shown in fig. 3, the pressing block includes a vertical section 411 disposed on the moving guide rail in a vertically movable manner, and a horizontal section 412 formed by bending the top end of the vertical section inward, so that the pressing block is 7-shaped, and the vertical section is provided with a radial positioning ball 42 disposed on the inner side of the vertical sections of the left and right pressing blocks in a vertically movable manner. Therefore, when the left pressing block and the right pressing block are lifted up and down and press the left side and the right side of the axial opening of the stainless steel tubular blank tightly, the radial positioning ball is located in the horizontal radial direction of the stainless steel tubular blank and abuts against the outer side wall of the stainless steel tubular blank, so that the horizontal radial dimension consistency of the stainless steel tubular blank is ensured, and the stainless steel tubular blank has extremely high rigidity and consistency of the width of the axial opening.
Of course, the height of the radial positioning balls on the vertical section and the distance between the two opposite radial positioning balls can be adjusted in advance, so that the height of the radial positioning balls on the vertical section is equal to the radius of the stainless steel pipe, and the distance between the two opposite radial positioning balls is equal to the pipe diameter of the stainless steel pipe. When the transverse sections of the left and right pressing blocks move downwards to press the upper side of the stainless steel tubular blank, the radial positioning balls are just positioned in the horizontal radial direction of the stainless steel tubular blank and press the outer side wall of the stainless steel tubular blank.
Of course, the radial positioning ball can move up and down in the vertical section and can move left and right in the horizontal direction so as to adapt to welding of stainless steel tubular blanks with different pipe diameters. Specifically, a lifting ring sleeve capable of moving up and down can be arranged on the vertical section, a transverse threaded sleeve is arranged on the inner side opposite to the lifting ring sleeve, and the radial positioning ball comprises a ball body and a screw rod connected with the ball body, wherein the screw rod is in threaded connection with the transverse threaded sleeve. The left and right position sizes of the radial positioning ball can be adjusted by only rotating the screw rod or the ball body.
In order to adjust the height of the pressing block mechanism, as shown in fig. 5, the pressing block mechanism includes a synchronous screw 6 disposed along the front-rear direction, and a vertical lifting screw 7 movably disposed on the movable guide rail, a lifting screw sleeve 8 is disposed on the lifting screw, a worm wheel is disposed outside the lifting screw sleeve, and a worm engaged with the worm wheel disposed outside the lifting screw sleeve of the corresponding pressing block mechanism is disposed at the front end and the rear end of the synchronous screw.
Therefore, the lifting screw sleeve can be driven to synchronously rotate only by rotating the synchronous screw rod, and then the lifting screw sleeve synchronously moves up and down on the lifting screw rod. In addition, the pressing block mechanism can also comprise a transverse pressing rod, one end of the pressing rod is integrally connected with a lantern ring sleeved on the lifting screw rod, and the lantern ring is positioned on the lower side of the lifting screw sleeve. When the lifting screw sleeve moves downwards, the lantern ring and the pressure rod can be pushed to move downwards, so that the upper side of the stainless steel tubular blank is pressed and connected. Certainly, we can set up the holding ring that the spiro union is on the lifting screw rod in the lift swivel nut downside, overlap the pressure spring that is located between lantern ring and holding ring on the lifting screw rod to make the lantern ring elasticity support and press the lifting swivel nut downside, and then make lantern ring, depression bar follow the lifting screw rod and shift up in step.
In order to avoid collision and interference with the press block mechanism when the stainless steel tubular blank is placed on the V-shaped groove of the V-shaped block of the workbench, as shown in fig. 6, a vertical adjusting column 23 can be arranged on the movable guide rail, the press block mechanism comprises a lifting sleeve 43 sleeved on the adjusting column, and two fastening nuts 44 screwed on the adjusting column and positioned on the upper side and the lower side of the lifting sleeve, vertical support rods 45 are respectively arranged on the left side and the right side of the lifting sleeve, the upper end of each support rod is provided with a press block capable of rotating upwards, a limiting structure is arranged between the press block and the support rods, so that the press block can rotate upwards to be in a substantially horizontal state, and the press block is attached to the support rods under the action of self gravity in an initial state.
When briquetting mechanism needs the upside at both ends around the crimping stainless steel tubulose blank, earlier upwards rotate the briquetting, limit structure makes the briquetting location horizontal (approximate horizontal direction), then the fastening nut of antiport lifting sleeve downside makes its downstream, and the fastening nut of antiport lifting sleeve upside makes the lifting sleeve move down after that, and until the upside of briquetting crimping stainless steel tubulose blank one end, then the fastening nut of screwing up lifting sleeve downside makes the lifting sleeve fix a position in the direction of height.
When we need press from both sides tight location with nonrust steel tubular blank through briquetting mechanism, can make the briquetting of briquetting mechanism be located nonrust steel tubular blank's top earlier, then the fastening nut of downwards rotation lift cover downside, can make the lift cover drive the briquetting through branch and move down, until the briquetting supports the upside of pressing nonrust steel tubular blank, the fastening nut of downwards rotation lift cover upside makes the lift cover move down this moment, until the upside of briquetting butt stainless steel tubular blank, then tighten the fastening nut of lift cover downside, can make the lift cover fix a position in the direction of height.
It should be noted that the pressing block of the present invention is rotatably disposed at the upper end of the supporting rod, so that, in an initial state, the pressing block is attached to the supporting rod under the action of its own weight, thereby facilitating the stainless steel tubular blank to be placed on the V-shaped block through the supporting rod having the pressing block at the left side or the right side, and then the pressing block is rotated upward and positioned in a transverse direction (substantially horizontal direction) through the limiting structure. Of course, the two moving guide rails can be arranged in parallel, one of the moving guide rails and the adjusting column can be arranged on the central connecting line of the front V-shaped groove and the rear V-shaped groove, and the other moving guide rail is arranged eccentrically, so that the arrangement of welding equipment is facilitated.
Claims (7)
1. The utility model provides a nonrust steel pipe welding set, includes workstation, the welding equipment of setting on the workstation, is used for location, the positioning mechanism of centre gripping stainless steel tubulose blank, positioning mechanism includes two bearings, two briquetting mechanisms, and two bearings, two briquetting mechanisms set up both ends around the workstation respectively, are equipped with the V-arrangement piece of liftable on the bearing, the V-arrangement piece is connected with the bearing through lift cylinder, and the working chamber of two lift cylinder lower parts is linked together through balanced pipeline around, is equipped with the control valve on balanced pipeline, welding equipment includes the movable guide rail of arranging along the workstation fore-and-aft direction, sets up the automatic weld machine on movable guide rail, nonrust steel pipe welding set's welding includes following step:
a. opening a control valve, placing the stainless steel tubular blank on the front and rear V-shaped blocks, enabling the axial opening of the stainless steel tubular blank to be upward, pressing the upper sides of the front and rear ends of the stainless steel tubular blank by the front and rear pressing block mechanisms, clamping and positioning the stainless steel tubular blank, keeping the same height, and then closing the control valve to enable the axial opening of the stainless steel tubular blank to be kept in a horizontal state;
b. the automatic welder was started and moved from front to back to form a weld at the axial opening of the stainless steel tubular blank.
2. The stainless steel pipe welding device according to claim 1, further comprising a height adjusting mechanism, wherein the height adjusting mechanism comprises a front lifting height-fixing block and a rear lifting height-fixing block which are arranged on the movable guide rail, and the step a comprises the following steps: opening the control valve, placing the stainless steel tubular blank on two V-shaped blocks in front and back, the axial opening of the stainless steel tubular blank is up at this moment, two height fixing blocks abut against the upper sides of the stainless steel tubular blank before and after lifting, so that the upper sides of the front end and the rear end of the stainless steel tubular blank are kept at the same height, then closing the control valve, so that the front end and the rear end of the stainless steel tubular blank are kept in a horizontal state, then the front pressing block mechanism and the rear pressing block mechanism abut against the upper sides of the front end and the rear end of the stainless steel tubular blank, then removing the height adjusting mechanism, and clamping and positioning the stainless steel tubular blank by the two pressing block mechanisms.
3. The stainless steel pipe welding device according to claim 1, wherein the pressing block mechanism comprises a left pressing block and a right pressing block which are arranged on the moving guide rail and can move up and down synchronously, and when the left pressing block and the right pressing block are lifted up and down, the left pressing block and the right pressing block can be pressed against the left side and the right side of the axial opening of the stainless steel tubular blank, so that the welding of the axial opening by the automatic welding machine is facilitated.
4. A stainless steel pipe welding apparatus as claimed in claim 3, wherein said pressing block comprises a vertical section which is vertically movably disposed on the movable guide rail, and a horizontal section which is formed by bending the top end of the vertical section inward, so that the pressing block is 7-shaped, the vertical section is provided with a radial positioning ball which is vertically movable, the radial positioning ball is disposed relatively inside the vertical section of the left and right pressing blocks, and when the left and right pressing blocks are vertically moved up and down and press the left and right sides of the axial opening of the stainless steel tubular blank, the radial positioning ball is located in the horizontal radial direction of the stainless steel tubular blank and presses the outer side wall of the stainless steel tubular blank.
5. The stainless steel pipe welding device according to claim 1, wherein the briquetting mechanism comprises a synchronous screw and a vertical lifting screw movably arranged on the moving guide rail, the lifting screw is provided with a lifting screw sleeve, a worm wheel is arranged outside the lifting screw sleeve, and the front end and the rear end of the synchronous screw are worms meshed with the worm wheel outside the lifting screw sleeve of the corresponding briquetting mechanism.
6. The stainless steel pipe welding device according to claim 3, wherein the movable guide rail is provided with a vertical adjusting column, the press block mechanism comprises a lifting sleeve sleeved on the adjusting column, and two fastening nuts screwed on the adjusting column and located on the upper side and the lower side of the lifting sleeve, vertical support rods are respectively arranged on the left side and the right side of the lifting sleeve, the upper end of each support rod is provided with the press block which can rotate upwards, the press block is attached to the support rod, a limiting structure is arranged between the press block and the support rod, when the press block mechanism needs to be pressed and connected with the upper sides of the front end and the rear end of the stainless steel tubular blank, the press block is rotated upwards, the limiting structure enables the press block to be located in the transverse direction, then the fastening nuts on the lower side of the lifting sleeve are rotated downwards, the lifting sleeve is moved downwards until the press block is pressed and connected with the upper side of one end of the stainless steel tubular blank, and then the fastening nuts on the lower side of the lifting sleeve are tightened, so that the lifting sleeve is located in the height direction.
7. The stainless steel pipe welding device according to claim 1, wherein the diameter of the stainless steel pipe is D, in the step a, the front and rear pressing block mechanisms move downwards to press one end of the stainless steel tubular blank first and then to press the other end of the stainless steel tubular blank continuously, at this time, the front and rear pressing block mechanisms move downwards continuously for a distance h, and h is more than or equal to 0.01D and less than or equal to 0.03D, and then the stainless steel tubular blank is clamped and positioned and kept at the same height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466661.4A CN115815860A (en) | 2022-11-22 | 2022-11-22 | Nonrust steel pipe welding set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466661.4A CN115815860A (en) | 2022-11-22 | 2022-11-22 | Nonrust steel pipe welding set |
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| Publication Number | Publication Date |
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| CN115815860A true CN115815860A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211466661.4A Pending CN115815860A (en) | 2022-11-22 | 2022-11-22 | Nonrust steel pipe welding set |
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| CN (1) | CN115815860A (en) |
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Application publication date: 20230321 |