JPH0593667U - Seam welding equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to efficiently and highly accurately perform seam welding on various different members to be welded and to simplify the configuration easily. [Structure] A rod member 14 supporting a seam welding rotary electrode 12, an apparatus main body 16 in which the rod member 14 is movable back and forth, and an apparatus main body 16 provided on the apparatus main body 16 and acting on the rod member 14. And a pressing force adjusting mechanism 18 capable of adjusting the pressing force. The pressurizing force adjustment mechanism 18 includes a spring member 40 that engages the receiving member 30 at one end, and a locking member 42 that engages with the other end of the spring member 40 and is positionally changeable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seam welding apparatus that performs welding by pressing members to be welded that are superimposed on each other with a rotating electrode.

[0002]

[Prior Art]

 Generally, in a seam welding device, metal members (members to be welded) that are superposed on each other are sandwiched by a pair of rotating electrodes, and a current is passed between the rotating electrodes. It is configured to perform seam welding by moving along.

By the way, in this type of seam welding apparatus, in order to perform the welding work satisfactorily and reliably, it is necessary to press the rotary electrode with a predetermined pressing force corresponding to the metal member to be welded. Therefore, for example, a device has been devised to drive and control a transfer device for moving the main body of the apparatus having the rotary electrode arranged along the welded portion so as to apply a predetermined pressing force to the rotary electrode. ..

[0004]

[Problems to be solved by the device]

 However, when the metal members to be welded are different, the optimum pressure applied to each metal member is different. Therefore, in the above-described conventional technique, the pressure applied to the rotating electrode by the transfer device is controlled for each metal member to be welded. Must. Due to this, it has been pointed out that seam welding cannot be performed efficiently and with high precision, especially for various types of metal members.

The present invention has been made in view of this kind of problem, and can perform seam welding efficiently and with high precision on various different members to be welded, and also simplifies the configuration easily. It is an object of the present invention to provide a seam welding device that can be used.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a rod member for supporting a rotary electrode for seam welding, a device body in which the rod member is movably arranged, and a rod member provided in the device body. A pressing force adjusting mechanism capable of adjusting a pressing force acting on the member; the pressing force adjusting mechanism engaging a spring member for applying a pressing force to the rod member; And a locking member whose position is freely changeable in the axial direction of the rod member.

[0007]

[Action]

 In the seam welding apparatus according to the present invention, when the rotary electrode supported by the main body of the apparatus is pressed against the material to be welded, the rotary electrode is urged by the elastic force of the spring member constituting the pressurization adjusting mechanism. The member to be welded is engaged with a predetermined pressing force. In this state, the transfer device for holding the main body of the apparatus is moved along the welded portion, so that the seam welding operation is performed on the welded member. Then, when the type of the member to be welded is different, only the position of the locking member that constitutes the pressurizing force adjustment mechanism is changed, and the elastic force of the spring member is arbitrarily changed and the member to be welded by the rotating electrode is changed. The pressure applied to the is adjusted. For this reason, it becomes unnecessary to control the pressurizing force by the conveying device and the like, and the work for adjusting the pressing force according to the member to be welded can be easily and efficiently performed.

[0008]

【Example】

 The seam welding apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, reference numeral 10 indicates a seam welding apparatus according to the first embodiment. The seam welding apparatus 10 includes a rod member 14 for supporting the seam welding rotary electrode 12, an apparatus main body 16 in which the rod member 14 is movable back and forth, and a rod member provided in the apparatus main body 16. A pressing force adjusting mechanism 18 capable of adjusting the pressing force applied to the pressure sensor 14 is provided.

A rod member 14 is movably arranged in the apparatus body 16 via bearings 20 a and 20 b, and an insulating member 22 is attached to a lower end portion of the rod member 14 exposed to the outside. The member 24 is fixed. A shaft 26 is attached to the mounting member 24, the rotary electrode 12 is rotatably provided on the shaft 26, and the rotary electrode 12 is connected to a power source (not shown) via a lead wire 28. A large-diameter receiving member 30 is fixed to the upper end portion of the rod member 14, and the receiving member 30 is formed inside the apparatus main body 16 and slidably fitted in the hole 32. A cylinder 36 having a hole 34 communicating with the hole 32 is fixed to the upper part of the device body 16, and a screw hole 38 is formed in the upper part of the cylinder 36.

The pressing force adjusting mechanism 18 is arranged in the holes 32 and 34, and has a spring member 40 that is engaged with the receiving member 30 at one end, and is engaged with the other end of the spring member 40 while the rod member 14 is being engaged. And a locking member 42 whose position is changeable in the axial direction. A hole 44 is formed at the end of the locking member 42, a sphere 46 is arranged in the hole 44, and the spherical receiving surface 50 formed on the end face of the pressing rod 48 is formed on the sphere 46. Engage. The pressing rod body 48 is provided with a screw portion 52 that is screwed into the screw hole 38, and the pressing rod body 48 is fixed to the axis of the knob member 54. The knob member 54 has an opening portion 56 in which the tubular body 36 is inserted and arranged.

Next, the operation of the seam welding apparatus 10 configured as above will be described.

After the apparatus main body 16 is held by a not-shown conveying device or the like, it is moved to the welded member W side. The rotary electrode 12 supported by the device body 16 contacts the member W to be welded, and the device body 16 is moved in the direction of the arrow in FIG. 2 to support the rotary electrode 12. The rod member 14 rises inside the apparatus body 16. Therefore, the rotating electrode 12 presses the welded member W with a predetermined pressing force via the elastic force of the spring member 40 forming the pressing force adjusting mechanism 18. Then, while the welding current is applied to the rotating electrode 12 and another rotating electrode (not shown) under the action of a power source (not shown), the main body 16 of the apparatus moves along the welded portion, so that the rotating electrode A seam welding operation is performed on the member W to be welded, which is sandwiched between 12 and another rotary electrode.

Therefore, when a new member to be welded W different from the member to be welded W is used, it is necessary to change the pressure applied by the rotary electrode 12 according to the new member to be welded W. That is, in the present embodiment, when the knob member 54 is rotated in the predetermined direction, the pressing rod body 48 is rotated integrally with the knob member 54, and a spherical body that engages with the receiving surface 50 of the pressing rod body 48. The locking member 42 moves in the axial direction (direction of arrow A) via 46. Therefore, the distance between the receiving member 30 and the locking member 42 is changed, and the elastic force of the spring member 40 disposed between them is adjusted arbitrarily according to the new member W to be welded. It

Therefore, in the present embodiment, by simply operating the pressing force adjusting mechanism 18 to adjust the elastic force of the spring member 40, the desired pressing force can be easily and accurately adjusted according to various different workpieces W to be welded. The effect that can be obtained is obtained. As a result, it is not necessary to control the pressurizing force by the carrier device or the like which holds the device body 16, and this type of control is simplified at once and the structure of the seam welding device 10 itself is complicated. It has the advantage that it can be effectively blocked.

Next, a seam welding apparatus 70 according to the second embodiment will be described with reference to FIGS. 3 and 4.

The seam welding apparatus 70 includes rod members 74a and 74b that support a pair of rotary electrodes 72a and 72b for seam welding, and an apparatus main body in which the rod members 74a and 74b are arranged to move forward and backward. The apparatus main body 76 is provided with a pressing force adjusting mechanism 78 capable of adjusting the pressing force applied to the rod members 74a and 74b.

Rod members 74a and 74b are arranged in the apparatus main body 76 via bearings 80a and 80b so as to be parallel to each other and movable back and forth. The attachment members 84a and 84b are fixedly attached via the members 82a and 82b. Rotating electrodes 72a and 72b are rotatably provided on the mounting members 84a and 84b. Stopper members 86a, 86b are provided on the upper ends of the rod members 74a, 74b for restricting the displacement amount of the rod members 74a, 74b and for preventing them from rotating.

Rollers 88 a and 88 b are supported on the upper ends of the rod members 74 a and 74 b, and the rollers 88 a and 88 b engage with the equalizer 90. The equalizer 90 is swingably supported by a holding member 92, and a receiving member 96 is fixed to a rod member 94 extending upward from the holding member 92. A tubular body 100 having a hole 98 is fixed to the upper portion of the apparatus body 76, and a screw hole 102 is formed in the upper portion of the tubular body 100.

The pressurizing force adjusting mechanism 78 includes a spring member 104 that engages the receiving member 96 at one end, and a locking member 106 that engages with the other end of the spring member 104 and is positionally changeable. A hole 108 is formed at the end of the locking member 106, a sphere 110 is disposed in the hole 108, and a spherical receiving surface 114 formed on the end face of the pressing rod 112 is formed on the sphere 110. Engage. The pressing rod 112 is provided with a threaded portion 116 that is screwed into the screw hole 102, and the pressing rod 112 is fixed to the axis of the knob member 118. The knob member 118 has an opening 120 into which the tubular body 100 can be inserted.

In the seam welding apparatus 70 according to the second embodiment configured as described above, the rod members 74 a and 74 b are engaged with the equalizer 90, and a pair of lower members for swinging movement of the equalizer 90 is used. The rotating electrodes 72a and 72b can be pressed against the member W to be welded with the same pressing force, and an advantage that a more efficient seam welding operation is performed can be obtained. Further, by operating the pressurizing force adjusting mechanism 78, the pressurizing force of the rotary electrodes 72a and 72b can be easily adjusted, and the same effect as that of the seam welding device 10 according to the first embodiment can be obtained. It will be.

[0022]

[Effect of the device]

 According to the seam welding device of the present invention, the following effects can be obtained.

When the type of the member to be welded is different, the elastic force of the spring member is arbitrarily changed only by changing the position of the locking member that constitutes the pressing force adjusting mechanism, and the member to be welded by the rotating electrode is changed. It is possible to easily and quickly adjust the pressure applied to the. This eliminates the need for pressurizing force control by a carrier device that holds the main body of the device, facilitates and efficiently perform pressurizing force adjusting work according to the member to be welded, and simplifies the structure of the seam welding device itself. To do.

[Brief description of drawings]

FIG. 1 is a perspective view of a seam welding apparatus according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the seam welding apparatus.

FIG. 3 is a perspective view of a seam welding apparatus according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of the seam welding apparatus.

[Explanation of Codes] 10 ... Seam Welding Device 12 ... Rotating Electrode 14 ... Rod Member 16 ... Device Main Body 18 ... Pressurizing Force Adjusting Mechanism 30 ... Receiving Member 40 ... Spring Member 42 ... Engaging Member 54 ... Picking Member 70 ... Seam Welding Device 72a, 72b ... Rotating electrodes 74a, 74b ... Rod member 76 ... Device body 78 ... Pressurizing force adjusting mechanism 90 ... Equalizer 94 ... Rod member 96 ... Receiving member 104 ... Spring member 106 ... Engaging member 118 ... Picking member

Claims (1)

[Scope of utility model registration request] 1. A rod member that supports a rotary electrode for seam welding, a device body in which the rod member is arranged to move forward and backward, and a pressure force that is provided in the device body and acts on the rod member is adjusted. A pressurizing force adjusting mechanism capable of applying a pressurizing force to the rod member, the pressurizing force adjusting mechanism engaging with the spring member, and freely changing the position in the axial direction of the rod member. Seaming welding device, comprising: