• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to apparatus for and a method of moving a grid (G) longitudinally in stepwise fashion through a multi-spot welding machine by means of an element (5) arranged to engage a transverse rod (D) of the grid at a starting position, move the grid (G) forward through a number of steps at a first mean speed, and thereafter disengage from the rod (D) and return to the starting position at a mean speed greater than the first mean speed. The movement of the element (5) is controlled by a computer (31) so as to return to its starting position if the time required for its return from the position which it would occupy after the next step is greater than a preset maximum standstill time between steps.
    公开号:SU927104A3
    申请号:SU802877206
    申请日:1980-02-11
    公开日:1982-05-07
    发明作者:Риттер Клаус；Шерр Рудольф；Риттер Герхард；Риттер Йозеф
    申请人:Эфг Энтвиклюнгс Унд Фервертунгс-Гезельшафт М.Б.Х. (Фирма)；
    IPC主号:
    专利说明:

    (5TH METHOD OF STEP FEEDING GRID
    I
    The invention relates to the manufacture of welded gratings consisting of axial and transverse wires overlapping with each other.
    The known method of step-by-step feeding of the grating, consisting of crossing longitudinal and transverse wires, in which after each welding cycle of the transverse wire with the longitudinal ones, the grate is moved one step through the drive grips in contact with the transverse wire and returns the grippers to the initial position 1.
    With each such step feed, there may be a slight error, and these errors are summed up over the fabrication of the grid, as a result of which unacceptably large total errors may occur.
    The aim of the invention is to improve the quality of the grid and the performance of its manufacture.
    To achieve this goal, in the step-by-step method of feeding the grid consisting of intersecting longitudinal and transverse wires, with which after each welding cycle of the transverse wire with longitudinal wires, the grating is moved one step through the drive grips in contact with the transverse wire and returns the grippers to their original position , the grippers return to their original position after the grid is fed several steps at a higher speed than the step-by-step speed, while before returning movement of the grips Using a computer, the number of gripper steps at the maximum time of the grating per welding cycle is effected.
    The maximum time just grates chosen at least equal to the time of welding one transverse wire. 39 In FIG. 1 shows a device for carrying out the feeding method, side view, partial section; FIG. 2 - the same, view from the exit side of the grid; in fig. 3, the trolley transporting device, with a partial section j in FIG. 4 and 5, the preferred embodiments of the transporting bodies, top view; in fig. 6 - construction scheme | Fig. 7 shows a preferred chart for the time dependence of the trolley path. Behind the welding machine 1 for multi-spot welding, to which the axial wires L for making the grid are supplied, for example, in a direction perpendicular to the plane of the drawing between the labeled rows 2 and 3 of the welding electrodes, there is a grid transfer device k, step feed and controlled from the computer. Step feeds are set in accordance with the distance between the transverse wires of the fabricated grid. The time just between the individual step feeds is also set with the help of a high-frequency machine according to the time required for pressing, welding and additional pressing, depending on the material and diameter of the wire to be processed. Several hooks 5s mounted on the trolley 6 of the transport device -4 are attached to an already welded transverse wire D of the fabricated grid G to move this grid far after each welding operation for the desired distance between the transverse wires. and the trolley 6 is mounted on the side racks 7 covered with axle holders 8, on which the running rails protruding inside are stretched 9. Each running rail 9 is covered by two upper two lower wheels 10 of the trolley 6, the two running rails 9 are fixed stationary toothed rod 11, with which one toothed gear 12 engages. The gear gears 12 are connected to the possibility of rotation with the shaft 13, the central part of which is reinforced, in order to eliminate the elastic twisting of the shaft 13 if possible. movement through gear 15 engine 16, mounted on the console of the trolley 6, and with this engine 16 is connected to the sensor 17 pulses, which during each movement of the engine and with each movement of the lattice G, caused by this movement, produces pulses, on the basis of which the corresponding position of the hook 5 or, respectively, of the lattice G enclosed by it is set relative to the given reference position. The cart 6 has a box-shaped body on which the hooks 5 are rotated around the axis 18. The hooks 5 deflect by the hydraulic cylinder 19 and help the hooks to engage the already welded cross-wire D. Each hook 5 by means of a rotary thrust handle 20 controlled by using another hydraulic cylinder 21, can be supplemented before gripping. The advantage of execution in the form of gripping is that the grid, which should be quickly moved one step as needed, cannot be further moved by inertia. In particular, for thin wire gratings, it is recommended, as shown in FIG. k, place the hooks 5, 5 in pairs on both sides of the axial wires L and directly adjacent to them in order to prevent the transverse wires D from bending as the grid is moved. FIG. 5 shows a similarly made double hook 5, 5 which, like a gripper, interacts with a stop handle 20 (shown in section) according to FIG. 3. In the zone of rows 2 and 3 of the welding electrodes, another backstop blocking device 22 is prudently mounted, defining a weld line formed from stops, for the newly welded transverse wire C, which prevents welding machines from wherein the axial wires L of the grille are removed from the spare coilers, the grids while the hooks 5 are not engaged with the transverse wire D, could not move back towards the winders under the action of elastic forces. Thus, with the aid of the device 22 for blocking the reverse stroke and the hooks or the grippers 5, respectively, the grille can be fed into a well-defined. settable position and can be held in this position. The length of the individual feeding steps is entered according to Fig. 6 into the program input unit 23. The computational machine at 2C determines, using these input parameters, the necessary sequential positions, to which the transport carriage 6 must approach, so that the individual transverse wires can be welded to the axial strands of the grating at a desired distance from each other. In the 2C computer, the desired feed steps can also be proportionally changed by a predetermined factor so that it is possible to equalize the unavoidable thermal expansion of the axial wires that occur during welding. . In addition, the permissible maximum time of a simple lattice can also be entered into the computer. The longer this time chooses, the smaller the total error becomes, and the performance decreases. The choice of maximal time simply depends on whether the grille should be made with particular precision, or whether high performance is more important. In the extreme case, the time required for one welding cycle and which consists of the time for pressing, the time for the actual welding and the time for subsequent pressing can simply be used as the maximum time. In addition, the desired speeds for the step movement of the grid and for the return movement of the transport carriage 6 are stored in the computer. Thus, the computer 2k controls, on the one hand, by means of an electro-hydraulic bolt 25, hooks 5, so that these hooks grab or again released a certain transverse wire, and, on the other hand, through an electric I hydraulic valve 2b, in front of which digital analogue 4. was switched on. 6 converter 27, hydraulic vigatelem device 16 k feeding lattice. The valve 26 is designed in such a way that it regulates the flow of the working fluid to the engine 16 in proportion to the voltage supplied from the computer 2 through the converter 27. The meter 28 of the path length determines, during each movement of the carriage 6, its exact position along the guide rails 9 through the accumulation of pulses coming from the sensor 17 pulses. and multiplying the number of pulses with the distance traveled between each two pulses. The value thus determined is fed to the computer, as well as the signal from the welding machine 1, as soon as the grid is freed from the electrodes and is ready for further movement. So, the feeding of the lattice takes place in such a way that the hooks 5 capture the transverse wire D of the lattice and hold it for several step feeds. Computing machine 2 based on a given 11 speeds of the return movement of the carriage 6, as well as based on the distance traveled. the feed, to which the path size is to be added, which must be passed through the next, not yet completed feed step, sequentially determines the time required to return the cart 6 to its initial position after the next feed step is completed. If this time is shorter than the programmed maximum time of the simple grille, which should preferably be equal to the time required for welding, then the next feeding step is performed. Moreover, the hooks 5 further cover the same transverse wire D as before. But if by calculation it turns out that the time required for the return movement of the carriage 6 after the next feed step would be more than the specified maximum time just for the lattice, then the hooks 5 are removed from the lattice C and the carriage 6 is retracted so that the hooks 5 can catch another, located near the weld line, transverse wire. Due to the width of the electrodes, such a gripping of the lattice in the area of the electrodes, i.e. on weld line, impossible 79
    female Therefore, the computer determines the preferred position of the transverse wire already welded to the axial wire, which is located behind the weld line, and retracts the carriage 6 only back so that the hooks 5 can grip the selected transverse wire.
    FIG. 7 shows a path versus time diagram for the transporting carriage 6, provided that the time for the carriage 6 to return is equal to just the time A required for one welding process. The time required to complete one step feed is indicated by the letter B. From the diagram it can be seen that In the example shown, the cart returns to its original position after three strides.
    The invention makes it possible to eliminate total errors during step feed, and therefore, to ensure high quality of the fabricated grid, as well as to increase the speed of grid fabrication.
    权利要求:
    Claims (1)
    [1]
    1. A step-by-step grid feed method consisting of intersecting longitudinal 0 8
    and transverse wires, in which after each welding cycle of the transverse wire with longitudinal wires, the grid is moved by a step using drive grippers in contact with the transverse wire, and the grippers are returned to the initial position, characterized in that, in order to improve the quality of the grid and its performance izgotoleny, captures return to its original position after the filing of the lattice a few steps at a higher speed than the speed of the step feed, while by using a computer at the maximum number of grippers time for a lattice welding cycle.
    2, the method according to claim 1.0, which implies that the maximum time of the simple lattice is chosen at least equal to the welding time of one transverse wire.
    Sources of information taken into account in the examination
    1, USSR Copyright Certificate G 592498, cl. At 23 K 11/10, 1976 (prototype).
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    类似技术:
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    同族专利:
    公开号 | 公开日
    DE3002873A1|1980-08-21|
    SE439893B|1985-07-08|
    JPS6339354B2|1988-08-04|
    DE3002873C2|1987-10-01|
    FR2449507A1|1980-09-19|
    GB2041276B|1982-10-06|
    US4360724A|1982-11-23|
    CH646082A5|1984-11-15|
    JPS55114479A|1980-09-03|
    AU532973B2|1983-10-20|
    AU5541380A|1980-08-28|
    ATA131279A|1980-12-15|
    AT363299B|1981-07-27|
    SE8001139L|1980-08-21|
    GB2041276A|1980-09-10|
    FR2449507B1|1983-08-26|
    IT8019913D0|1980-02-14|
    IT1140595B|1986-10-01|
    BE881579A|1980-05-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT264271B|1966-01-31|1968-08-26|Evg Entwicklung Verwert Ges|Device for changing the cross wire spacing in the manufacture of welded grids|
    DE1279631B|1967-01-13|1968-10-10|Baustahlgewebe Gmbh|Device for the step-by-step movement of wire mesh welded in a multi-point welding machine|
    AT301312B|1968-02-16|1972-08-25|Evg Entwicklung Verwert Ges|Device for fully or semi-automatic, preferably program-controlled, changeover of mesh welding machines to different stroke lengths of the mesh pull-up members|
    AT293840B|1968-07-19|1971-10-25|Evg Entwicklung Verwert Ges|Plant for the production of welded reinforcement grids for reinforced concrete|
    AT307210B|1969-07-15|1973-05-10|Evg Entwicklung Verwert Ges|Method and device for the production of welded wire mesh|
    AT309185B|1970-07-31|1973-08-10|Evg Entwicklung Verwert Ges|Device for cross wire feed in a mesh welding machine|
    DE2330019C2|1973-06-13|1975-03-20|Emil Jaeger Kg, 4400 Muenster|Machine for the production of welded wire mesh|AT373799B|1981-07-28|1984-02-27|Evg Entwicklung Verwert Ges|MULTIPLE POINT WELDING MACHINE FOR THE PRODUCTION OF GRIDS OR GRIDS|
    DE3245179C2|1982-12-07|1985-01-17|Staco Stapelmann GmbH, 4044 Kaarst|Device for making gratings|
    AT396882B|1990-03-30|1993-12-27|Evg Entwicklung Verwert Ges|DOUBLE POINT WELDING MACHINE|
    ES2049542T5|1990-06-07|1999-06-01|Peter Lisec|PROCEDURE AND DEVICE FOR BENDING PROFILED HOLLOW TAPES IN SEPARATION FRAMES FOR INSULATED GLASS SHEETS.|
    US5719366A|1995-01-25|1998-02-17|Trion Industries, Inc.|Method for manufacture of rack and shelving system|
    CH693089A5|1997-06-10|2003-02-28|K R Pfiffner Ag|Means having at least one handling device.|
    US20070095006A1|2005-11-01|2007-05-03|Konersmann Ronald D|Lightweight portable concrete enclosure and associated method of construction|
    CN101791666B|2009-11-20|2012-05-30|建科机械（天津）股份有限公司|Mesh drawing hook mechanism of mesh welding machine|
    CN103128204B|2013-03-13|2015-04-08|建科机械（天津）股份有限公司|Integrated mesh drawing device of reinforcing mesh welding production line|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0131279A|AT363299B|1979-02-20|1979-02-20|METHOD AND DEVICE FOR THE STEP-BY-STEP TRANSPORTATION OF A GRID PRODUCED IN A MULTI-POINT WELDING MACHINE|
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