• 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 the field of welding, in particular to machines for resistance spot welding of gratings, and can be applied in the manufacture of reinforced concrete structures. The aim of the invention is to enable the fabrication of gratings with variable pitch by changing the distance between the transverse wires during the working process. The machine has a cross wire feeder, on which carrier 1, with its drive moving kinematically connected with the stepping drive, has two guiding beams with feeding devices that can be moved to the same direction in opposite directions. Feeding devices are made in the form of transport consoles. N9 P1; o ate; o cm
    公开号:SU1279519A3
    申请号:SU3466062
    申请日:1982-07-26
    公开日:1986-12-23
    发明作者:Гетт Ханс；Шерр Рудольф；Риттер Йозеф；Риттер Клаус；Риттер Герхард
    申请人:Эфг Энтвиклюнгс-У.Фервертунгс-Гезельшафт Мбх (Фирма)；
    IPC主号:
    专利说明:

    1279519
    The machine contains a system of electrodes for spacing the electrodes for two-point welding, in which, in accordance with the spacing between the transverse, there is also the possibility of wire measurements. 6 h, para. f-ly, 9 ill.
    one
    The invention relates to the field of welding, in particular to machines for resistance spot welding of gratings or grates, and may find application in the manufacture of reinforced concrete structures.
    The purpose of the invention is to provide fabrication of gratings with variable pitch by changing the distance between the transverse wires during the working process.
    FIG. Figure 1 shows a diagram of the paths of movement of two feeding devices for transverse wires; in fig. 2 shows a kinematic diagram of the drive of the feeder system; in fig. 3 - the same, in a different position, in FIG. 4 system of feeding devices with hydraulic control circuit, type of top; in fig. 5 - the same, side view; in fig. 6 - system of electrodes and systems of the feeding devices at the moment of transfer of the transverse wires from the laying lines; in fig. 7 shows a system of electrodes and a system of feeding devices with transverse wires mounted on the welding lines; FIG. 8 is an electrode system, another embodiment; FIG. 9 - the proposed machine, side view (option).
    FIG. Figure 1 shows the various relative positions of the welding lines to the sealing lines of the transverse wires, viewed in the direction of these lines, i.e. according to the side view of the welding machine. Both lines of the gasket E1 and E2, according to the given condition, occupy a certain fixed position, whereas welding lines for changing the distance between the transverse wires can change their position. When at a certain point in time simultaneously along both lines of the E1 and E2 gasket, the transverse wires laid in the welding
    the machine with the corresponding feeding devices, are shifted by distance AND between the planes of symmetry ME and MS of laying lines or welding lines in the direction of the system of welding electrodes, then they fall on welding lines S1 or S2, distance A, between which is equal to the distance between the lines gaskets E1 and E2. With an oppositely directed change in the length of the path, the displacements H1 and H2 of the transverse wires by an amount X (HI H + X, H2 K - x) form welding lines S1 and S2, the mutual distance between which is 2x greater than the distance A between the strip lines .
    By reducing the stroke length HI and correspondingly increasing the stroke length H2, welding lines can be obtained, the distance between which is less than the distance A between the gasket lines. When
    5 mutual variation of the stroke lengths of the displacements H1 and H2 of both feeding devices occurs during one working cycle of the welding machine, the distances between the transverse wires can
    Q will be changed during the manufacture of the grids.
    The machine for contact spot welding of gratings contains a carrier beam 1, on which two guide rails 2 and 3 with transverse wires feeding devices, made in the form of transport consoles 4 and 5, are mounted on opposite directions.
    0 The carrier beam 1 is pivotally connected to the first pivot-lever quadrilateral 6, which through the pivot 7 is connected to the second pivot-lever quadrilateral 8. In addition,
    权利要求:
    Claims (7)
    [1]
    The 5-lever quadrilateral 6 is pivotally connected to the swing lever with a lever 9 fixed on the bearing stationary relative to the machine so that it can be rotated in it as in a ball. The swing arm 9 can rotate between both boundary positions (figs. 2 and 3), moving back and forth, with the center of 10 tons of the supporting beam 1 between its two extreme positions making the way N. The hinged quadrangle 8, the corner point of which is pivotally supported in the bearing 11, fixed to the machine, carries the cam-feeling roller 12, which by means of, for example, a spring (not: shown), presses against the cam (not shown). The opposite lever carrying the feeling roller 12, drive lever 13 articulated the lever quadrangle 8 is rigidly connected to the driving lever 14 of the hinged quadrilateral 6, so that each movement of the roller 12 through the hinge 7 and rigidly interconnected, forming the angular lever, the driving levers 13 and 14 is transmitted to the hinge quadrilateral 6. From the comparison FIG. 2 and 3, you can see the course of movement when applying the transverse wires. FIG. 2, transport consoles 4 and 5 occupy positions 4a and 5a in their grooves, lifting the transverse wires Q1 and Q2 from the wire guides at E1 and E2. The swing arm 9 moves under the action of its actuator from the position shown in FIG. 2 to the position shown in FIG. 3. The transport consoles 4 and 5 then fall into the 4b and 5b positions. In this case, the roller 12, the groping cam, is shifted away from the control cam (from the position shown in Fig. 3 by the dash-dotted line to the position shown by the solid line), moreover, the pivot quadrangles 6 and 8 are rotated in such a way that the individual actuating levers are also shifted (moving from the positions shown in Fig. 3 by dash-dotted lines to the positions shown by a solid line). As a result, the supporting beam 1 turns around 10 tons of tin into its center and the transport consoles occupy the positions 4c and 5c with their grooves (Fig. 3). The transverse wires Q1 and Q2 are then laid down on the lower electrodes, and the transport brackets 4 and 5 release 194 from engagement with the transverse wires. When the swing arm 9 returns to its original position (Fig. 2), the transport consoles 4 and 5 with their grooves fall into the 4d and 5d positions, and they are under the longitudinal elements and transverse wires during the entire return movement, therefore also out of engagement with them. Now the roller 12, the fidgeting cam, returns to the position shown in Fig. 2 by the dash-dotted line, and the axes of both driving levers, which form the hinge quadrangles 6 and 8, pass from the position shown by the solid line to the position shown by the dash-dotted line. At the same time, transport consoles are rotated from positions 4d and 5d to positions 4a and 5a, lifting two new transverse wires Q1, Q2 from guide wires at E1, E2 and preparing them for a new feed rod. The ends of the guiding beams 2 and 3 are connected to a stepping movement drive in the form of two spindles 15 and 16, supported in bearings 17 and 18, which are fixedly mounted on a carrier beam 1, and counter threads are cut on both sides of the bearings 17 and 18. At one end of each spindle 15 and 16, a bevel gear 19 and 20 is firmly seated, which is engaged with the following bevel gear 21 and 22, Bevel gears 2.1 and 22 are firmly seated on a common shaft 23, which is driven by a hydraulic motor 24 The pump 25 driven by the engine 26 takes the oil from the oil bath 27 and supplies it to the supply line 28 on which the electro-hydraulic valve 29 is installed, which is controlled by the control amplifier 30. The control amplifier 30 is through line 3 1 is connected with an electronic software sensor (not shown), and about line 32 is connected with a pulse sensor 3, which, for example, by means of a wedge belt 34, is driven by the hydraulic motor 24 and confirms (acknowledges) the actual value of the corresponding position of both guide rails 2 and 3 along the spindles 16. The hydraulic motor 24 and the pulse sensor 33 are mounted on a reinforced support beam 1 of the console 35 so that it repeats all the movements of the support beam 1. The connections to the hydraulic motor 24 and to the pulse sensor 33 are flexible. The electronic software sensor has a programmed setpoint sensor for such relative positions of the guide beams 2 and 3 that correspond to the position of these guide beams when collecting transverse wires from the wire guides at E1 and E2. In addition, predetermined value sensors are provided that are programmed to different relative positions of the guide beams 2 and 3 so that, if necessary, it is possible to create a grid with varying distances between the transverse rods. The device also has two (not shown) pulse sensors, one of which at each boundary position of the transport beam 1 (Fig. 2 sprinkles a pulse, which is controlled by the setpoint sensor for the selected relative positions of the guide beams 2 and 3. As a result, the direction of the beam is set to the position corresponding to the required distance between the transverse wires. The second impulse sensor at each boundary position of the carrier beam 1 (Fig. 3) sends a pulse through which the programmed sensor setpoints are controlled by the relative position of the carrier beams. Then, the guide beams 2 and 3 are again adjusted to the relative position required to take the transverse wires from the guide wires from E1 and E2. The pulses emanating from both of the pulse sensors are supplied - to the counting mechanism and in it are added together.In addition, the device contains a programmable sensor for counting steps The number of pulses summed in the return counting mechanism is compared with the programmed number of steps connected to the control system sensor number of steps. Upon reaching compliance with the control system, the sensor of the number of steps and the sensor for selectable relative positions of the guides of beams 2 and 3 are disconnected, and the next 19 number of steps with the sensor selects the relative positions of directional equal beams, and the counting mechanism returns to zero. Such a construction of a software sensor allows, within the same lattice region, to establish the necessary quantities of transverse wires and the distance between them. A signal is transmitted from the electronic software sensor via line 31 to the control amplifier 30, which corresponds to a certain position of the guide beams 2 and 3. The controls amplifier 30 acts on the electro-hydraulic valve 29 and brings it to the switching position, by which the hydraulic motor 2A starts to work in the direction of approaching position of the guide beams 2 and 3 to their desired relative position. Simultaneously with the activation of the hydraulic motor 24, the pulse sensor 33 sends pulses along line 32 to the control amplifier 30, which reversely signal the changing actual positions of the guide rails 2 and 3. After the actual and predetermined relative positions come to the corresponding, the electrohydraulic valve 29 is set to the neutral position (Fig. 4) and the hydraulic motor remains stationary until the control amplifier 30 on the line 31 gives a new command signal. Since the revolutions of the hydraulic motors reach very large values, it is possible in a short time to permute the relative positions of the guide beams 2 and 3 necessary to transfer the carrier beam 1 from the position shown in fig. 2 to the position shown in FIG. 3. The shift of the guide beams 2 and 3 always takes place by the same and oppositely directed value, as a result of which different paths of displacement H + x and H - x acting as the feeding devices of the transport cantilevers 4 and 5 are obtained. A similar effect is achieved when using oppositely acting pistons instead of spindles. 71 In the case of a grid with different distances between the transverse wires, it is necessary to adjust the distance between the welding electrodes of each section of the two-point welding to the distance between the transverse wires. A passive current jumper 38, located on the opposite side of the grid fabrication plane, interacts with the welding electrodes 36 and 37 of the two-point welding section. FIG. 6 shows the moment in which the transport brackets 4 and 5 take the transverse wires from the strip lines E1 and E2; FIG. 7 shows the moment of application of the transverse wires to the lower electrodes 36 and 37, spaced apart from each other by the distance A + 2x, equal to the distance between the transverse wires. Electrodes 36 and 37 are connected to busbars 41 and 42 by means of electrode holders 39 and 40, which are connected to the secondary windings of welding transformers via supply lines. Busbars 41 and 42 are fixed to the guides of the flanges 43 and 44, which are engaged with the spindle 45, both halves of which have counter threads and which are fixed with respect to the carrier plate 46. The spindle 45 is rotatably driven by the hydraulic motor and slidably supported on the carrier plate 46, the guide bars 43 and 44, and all associated parts are shifted in opposite directions by the same x values. The electronic device regulating the shift of the welding electrodes is made similarly to an electronic device for changing the pitch between the floor of the welding rod. , pyp, t "th equal beams. A control amplifier acting on the movement of the welding electrodes is connected, when the counting mechanism of the program sensor is set back to zero, to the sensor being selected at this moment that the selectable relative positions of the guide beams 2 and 3 are connected to the control system. setting the electrodes 36 and 37 to a distance corresponding to a predetermined distance between the transverse wires of the grid. 19 The jumper 38, which is provided with a removable wear-out tire, by means of a hinge and a spring-loaded pusher is pivotally connected to the upward and downwardly moving electrode beam 47. The transport hook 48 is designed to grip the transverse wires welded to the longitudinal lattice elements. The hooks for them, he does not have a grid forward, each time by a double distance between the transverse wires. FIG. 8 is a diagram of another embodiment of an electrode device. The electrode consists of a narrow electrode body 49-50, extending parallel to the longitudinal lattice elements with decreasing outward (from the plane of symmetry: MS welding lines), with a height at which a replaceable wear tire 51 or 52 is provided. For the manufacture of grates from high but narrow (in the form of (tape) longitudinal elements L, from whose narrow sides the transverse rods Q1, Q2 must be welded so far that their upper layers lie in the same plane as the upper ones forming longitudinal elements L, zuets machine schematically shown in Fig. 9. The welding transformers 53 and 54 in this machine are installed on both sides of the electrode beam 47 and hardened so that their weight can help to create a significant welding pressure. Electrode beam 47 is pivotally connected to parallel driving levers 55 and 56, whereby the driving lever 56 is connected by a crank 58 by means of a connecting rod 57. Using this device, electrode beam 47 can be moved up and down by the required distance. The welding electrodes 36 and 37 are mounted above the grid fabrication plane. A current bridge is not required, since longitudinal lattice elements L with a large cross-sectional area can take on a current supply between adjacent fed-in electrodes of opposite polarity with transverse wires Q1, Q2 without causing heating of the longitudinal elements. A sliding guide 59 is mounted on the body of the machine on a hinge. By means of the crank-beam mechanism 60 and the drive lever 61, the slide guide 59 can be rotated around the hinge 62. The slider 63 supported on the slide guide 59 can be moved along the slide guide 59 by the lever 64, when interacting with the pusher bar 65 through the hinge 66. The sliders 67 and 68 rest with movement on the slide guide 69, which is rigidly connected to the slide 63. The sliders 67 and 68 carry each. on the feed device 70 and 71 of the transverse wires and rigidly connected to the pistons 72 and 73, which follow along the rod of the shaft 74, which is fixed in the slider 63 with the possibility of movement. The transverse wires at E1 and E2 are laid in closed with spring-loaded valves, and then with the help of a lever 75, which feeds the transverse wires against the force of the spring from the guide wires, are fed to the receiving holes or grooves of the feeding devices 7G and 71 transverse wires. To this end, the feed levers 75 of the transverse wires are mounted on a rotatable shaft 76, which can act in the working rhythm of the welding machine. Since in the grate making machines, the transverse wires have a relatively large diameter with respect to their length and are therefore so rigid that they do not require any support in the section of the longitudinal element L of the produced grate, transverse wires are needed only on both sides of the welding section . After the two transverse wires fall into the receiving holes or grooves of the transverse wire feeding devices 70 and 71, the slider 63 moves along the slide guide 59 located parallel to the longitudinal elements under the action of the pivoting lever 64 and the pusher bar 65 by the amount H from the rails wires at E1 and E2 to the system of welding electrodes. This movement is also promoted by opposing 1910 relative movements of the sliders 67 and 68 with respect to the slide 63 and overlap it by an amount x because the pistons 72 and 73 are loaded with the working fluid in the required direction and therefore, taking the sliders along the sliding direction with them 67 To 68, moving along the piston rod 74, as the newly laid transverse wires fall into the positions E1 and E2, the crank-beam mechanism 60 rotates to the position f shown in FIG. 9 dot-dash. As a consequence, the sliding guide 59 rotates on the hinge 62 and occupies a position directed at an acute angle to the longitudinal elements L of the grate, with the transverse wires in the positions Q1 and Q2 being placed on the longitudinal elements on which are fixed with the lowered electrodes 36 and 37 with the electrode beam 47 under the action of the crank 58. After welding, the rocker arm 64 and the slider 63 return to their original position. Since during this movement the slider 63 moves along the slanting slide guide 59, the cross wire feed devices remain out of engagement with the cross wires. At the same time, the slider 68 and 67 are also returned to their initial position by the action of the pistons 72 and 73, the slide along the sliding guide 69. After the sliders 63, 68 and 67 have reached their initial positions, the slide guide 59 rotates to a position parallel to the longitudinal elements L. After that, all parts are ready to receive new transverse wires. Thus, the invention allows welding with alternating or direct current. Moreover, for welding of gratings. Wire with a diameter of 1-14 mm can be used. Claim 1. A spot welding machine for gratings comprising a welding electrode system consisting of electrode beams installed in pairs in electrode holders and an electrode beam located above them, two guides for transverse wires mounted at a distance from one another, the feed mechanism transverse wires, made in the form of guide beams with feeding devices fixed to them and with water moving in steps, a grid moving mechanism and an automatic control system characterized in that, in order to ensure the fabrication of lattices with variable pitch by changing the distance between the transverse wires during the working process, the transverse wire feed mechanism is provided with a carrier beam and a drive for moving the guide beams, the carrier beam is kinematically connected with the drive stepping movement and on it are installed with the possibility of moving two guide beams with feeding devices to the same distance in opposite directions.
    [2]
    2. The machine according to claim 1, characterized in that the drive for moving the guide beams is made in the form of a spindle drive with opposing threads or in the form of cylinders.
    [3]
    3. Machine on PP. 1 and 2, that is, each feeding device is made in the form of a transport console with pairs for receiving transverse wires.
    [4]
    4. Machine on PP. 1-3, in which the electrodes are arranged in pairs at a given distance from each other with the surfaces inclined in opposite directions with working strips on them.
    [5]
    5. Machine on PP. 1-4, that is, the electrodes are mounted on the holders for movement in opposite directions.
    [6]
    6. Machine on PP. 1-5, that is, the electrodes, which are mounted for movement in opposite directions, are provided with a drive for their movement, made in the form of a spindle drive with opposing threads.
    [7]
    7. Machine according to paragraphs. 1-6, that the automatic control system contains sensors for determining the distance between the transverse waves associated with the servomotor, kinematically connected with the movement drives of the guide beams and the movement drives of the pairs of electrodes installed. Mf
    ... jsct
    2
    22 a
    33 2 J4f J5
    1279519
    J N.
    FIG.
    6 / / /. , FIG. 7,
    类似技术:
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    同族专利:
    公开号 | 公开日
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT252692B|1964-07-08|1967-03-10|Evg Entwicklung Verwert Ges|Straight guiding device, especially for feeding the cross bars in mesh welding machines|
    AT264271B|1966-01-31|1968-08-26|Evg Entwicklung Verwert Ges|Device for changing the cross wire spacing in the manufacture of welded grids|
    AT267292B|1966-03-22|1968-12-27|Evg Entwicklung Verwert Ges|Equipment for grid feed and cross wire transport in grid welding machines|
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    AT293840B|1968-07-19|1971-10-25|Evg Entwicklung Verwert Ges|Plant for the production of welded reinforcement grids for reinforced concrete|
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    AT363299B|1979-02-20|1981-07-27|Evg Entwicklung Verwert Ges|METHOD AND DEVICE FOR THE STEP-BY-STEP TRANSPORTATION OF A GRID PRODUCED IN A MULTI-POINT WELDING MACHINE|DE3245179C2|1982-12-07|1985-01-17|Staco Stapelmann GmbH, 4044 Kaarst|Device for making gratings|
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    DE3741377C1|1987-12-07|1989-02-16|Jaeger Emil Gmbh Co Kg|Method and device for bridge welding|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0332881A|AT373799B|1981-07-28|1981-07-28|MULTIPLE POINT WELDING MACHINE FOR THE PRODUCTION OF GRIDS OR GRIDS|
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