JPS617095A - Turning slide device for cylindrical weldment - Google Patents

Abstract

PURPOSE:To provide a titled device which is so constituted as to center exactly and easily a cylindrical body to be joined by starting forward or backward or individually servocontrol motors according to the displacement angle of the end face of the cylindrical body to be joined and the quantity thereof. CONSTITUTION:A supporting carriage 1 provided with a sliding mechanism supports the cylindrical body and has the function to travel along the rails 2 of a manufacturing line. Sliding bodies 4 support pivotally support rollers 3 and can be easily slided by rollers 6. A screw shaft 7 penetrates respectively through both bodies 4 and maintains a screwed relation with actuators 9 which are integral with the bodies 4. The servocontrol motors 10 are respectively directly coupled to both outside ends of said shaft. The cylindrical body on the rollers 3 is vertically adjusted by attaching and detaching relatively the bodies 4 and the cylindrical body can be laterally adjusted by sliding either of the bodies 4. The centering adjustment of the cylindrical body is thus made possible by detecting the displacement angle of the end faces thereof and the displacement quantity thereof with detectors and controlling the number of forward and backward revolutions of the motors 10 and further the individual starting thereof.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to manufacturing a cylindrical container having a long body, such as a large pressure vessel used in a chemical plant.
The present invention relates to a technique applied when sequentially butt welding the cylindrical single bodies that are the constituent members thereof.

[Prior art and its problems]

When manufacturing large pressure vessel bodies for chemical plants, etc., a steel plate is sampled and bent to the required dimensions, bent into a semicircular shape, each edge is beveled, and then this semicircular member is A method is adopted in which a plurality of cylindrical members manufactured in this way are sequentially joined and welded by joining and welding in the longitudinal direction. However, the longer the body is made, the more
In other words, the greater the number of cylindrical members to be joined, the greater the displacement of the joint surfaces due to strain, making it extremely difficult to perform centering and mixing operations prior to welding, and furthermore, the conventional welding method generally requires a long work time. Therefore, it is considered to adopt electron beam welding, which has a narrow heat-affected zone and generates extremely little distortion compared to general welding methods. Although,
In this case, prior to haze welding, it is necessary to perform centering operations such that the error of the joint end face is less than ±0.5, and especially when performing joint welding from the second stage onward, the above-mentioned Operation is essential, and therefore a centering mechanism (slide device) that can be automatically controlled and has good precision and responsiveness is required.

[Object of the invention]

The present invention has been made for the purpose of providing a turning slide device for correcting the displacement of a joint end surface when welding a cylindrical body constituting a body of a large cylindrical container.

[Structure of the invention]

This invention consists of a pair of screws that slide through a screw mechanism that is directly connected to a servo tanabata that is activated by a control command according to the master position angle of the joint end surface of a cylindrical body to be welded and the amount of displacement thereof. It is equipped with supporting rollers and is characterized by the ability to run along the rails of the production line.

〔Example〕

An embodiment of the present invention will be explained below based on the drawings.

In other words, (1) is a support cart with a sliding mechanism, and this is a cylindrical body (5
) supported by rails (2) and laid along the production line.
), and the support roller (3) provided on the upper surface is pivotally supported by the slider (4).The lower surface of the slider (4) is supported by the support provided on the trolley body A large number of rollers (6) rotatably supported on the frame 15)
It is supported by these rollers (6) so that it can slide easily. (7) is a screw shaft that passes through both the tank moving bodies (4) and is supported by a bearing (81), and each of these screw shafts (7) is an actuator (9J) that is integral with the sliding body (4). A servo motor is directly connected to both outer ends.

By the way, the support cart (1) with a slide mechanism has the role of supporting the welded cylindrical body (1) and transporting it to a predetermined location, as well as supporting a series of sequentially welded cylindrical bodies (1) at one end thereof. It has the role of performing a so-called centering operation by making fine movements up and down, right and left, and correcting the displacement of the end face. That is, by moving the sliding body (4) relatively toward or away from each other, the cylindrical body (4) on the support roller (3) is moved between the upper and lower jaws p (
(z) direction, and the cylindrical body (4) can be adjusted in the left and right y-axis directions by sliding either one of the sliding bodies (4). 1) As shown in Figure 1, the tip of the VC-welded cylindrical body (1) is fixed to the support (
6), and the rear end is supported by a supporting island wheel (1) with a sliding mechanism.
The end face (&) of the cylindrical body (4) is Finely adjust the above fixed abutment (AJ( Rotate in a plane perpendicular to the axis of rotation of the joining weld line in A): After mixing the sea urchins, temporarily attach the two, and surround this weld line, for example, in a local vacuum chamber (not shown)'f, and assemble. An electron beam welding machine is placed opposite C1 from the side, and after the required vacuum is drawn, welding is carried out while rotating the cylindrical body at a predetermined speed.

As mentioned above, when adjusting the centering of the cylindrical body (to), first check the amount of displacement of the end face and its direction. The J1 knob angle is detected by a detector (B), and based on this value, the forward/reverse rotation speed of the servo motor αl is controlled by a converter (To). When it is tilted, the control amount of the sliding body (4) is L and θ, and if the end face is similarly tilted by θ in the two axes, r- is the sliding body (4).
The constraint of field (4) is Lmθ. However, in this case, since the control amount is performed only on the y-axis, the control amount of two axes (L
gfn&') must be converted by the control amount I on the y-axis.

In Fig. 1, color) is a device that rotates the entire cylindrical body in a predetermined direction;
This is used when a cylindrical object to be welded is moved by mouth to a td welding machine, and the rotation of the motor (2) mounted on the trolley (2) is parallel to the reference plane which is the universal jaw plane. The cylindrical body (Shu) is rotated through a gear (B) attached to the cylindrical body.

The fixed frame (T) of the pinion (to) has its base end rotatably pivoted to the center of the gear 〇η, and the other end constitutes a bearing for the pinion (5). The bearing is slidable only in the vertical direction and is fixed in the horizontal direction, and is moved by the amount of horizontal centering control of the cylindrical body (end surface of the ship). In order to rotate the end face of the cylindrical body, which is a long product that has completed the centering and mixing operation of the joint end face, in a plane at an angle to the rotation axis, an irregular slider is installed at the end of the cylindrical body. It has the function of rotating the cylindrical body while dealing with the wood movement.If the cylindrical body has a large number of connected stages and has a long body, the opposite side corresponding to the rotating device (B) is used. The ends are also provided with suitable rotation devices (not shown).

〔Effect of the invention〕

According to this invention, it is possible to properly and easily center the cylindrical bodies by starting the servo motor forward or backward or individually depending on the displacement angle and amount of the end face of the cylindrical bodies to be joined. It is especially indispensable as an accessory device when using the electron beam welding method for butt welding of long cylindrical bodies, and also has the function of a cylindrical body transport vehicle, which is effective. is large.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an apparatus according to the present invention and its mode of use, FIG. 2 is a partially enlarged sectional view of the apparatus, and FIG. 3 is a block diagram showing an operating system. (1) is a support cart with a sliding mechanism, (3) is a support roller, (4) is a sliding body, (7) is a screw shaft, +91 i'i actuator, and α0 is a servo motor.

Claims (1)

[Claims] Equipped with a pair of supporting rollers that slide through a screw mechanism directly connected to a servo motor that is activated by a control command according to the displacement angle of the joint end surface of the cylindrical object that is the welded object and the amount of displacement,
Furthermore, the turning slide device for cylindrical welded objects is characterized by having a function of running along the rails of the production line.