CN218557073U - Scribing and shape-taking tool for circular tube intersecting piece - Google Patents

Abstract

The utility model discloses a pipe passes through marking off of piece mutually and gets shape instrument, including strong magnetic base, the V-arrangement groove that holds different diameter steel pipes is seted up to strong magnetic base bottom, and the vertical central axis pole that is provided with in strong magnetic base top rotates on the central axis pole and is connected with the guide pin bushing, and guide pin bushing lateral part level is provided with the scale, and sliding connection has the subassembly of marking off on the scale, installs the marking off pen on the subassembly of marking off, and the marking off pen lower extreme with wait to process pipe surface butt. Use the utility model discloses the shape instrument is got in the rule, can effectively improve the pipe and dock the rule and the cutting quality of looks transversal, the field operation of being convenient for has reduced the construction degree of difficulty.

Description

Scribing and shape-taking tool for circular tube intersecting piece

Technical Field

The utility model relates to a shape instrument is got in drawing a line, concretely relates to shape instrument is got in drawing a line that pipe passes through piece mutually.

Background

In the manufacturing of pressure vessels and pipeline construction, plate-to-pipe, same-diameter or different-diameter pipe-to-pipe are often subjected to intersecting butt welding construction, and local holes need to be formed in the same-diameter or different-diameter pipes or shapes need to be formed on connecting plates. When no automatic cutting equipment for the intersecting pieces exists, an unfolding sample plate is required to be manufactured according to a drawing, then the sample plate is used for marking and punching holes, but due to manufacturing errors of part of intersecting pieces, the phenomenon that the size of the unfolding sample plate does not accord with the size of the drawing exists, errors exist between the unfolding sample plate and an actual workpiece, the holes or butt gaps between the intersecting pieces exceed the standard, and the welding quality of butt welding seams between the intersecting pieces is seriously influenced.

Chinese utility model patent CN201420739535.6 discloses a circular tube hole-opening marking device, which is provided with a positioning column at one end of a guide rod on a handle, wherein the handle is vertically fixed on a processed circular tube through the positioning column; one end of the linear guide rail is hinged with the guide rod along the direction perpendicular to the guide rod, the linear guide rail horizontally rotates around the guide rod, a linear ball guide sleeve sliding along the linear guide rail is mounted on the linear guide rail, a linear ball guide sleeve sliding seat is arranged on one side of the linear ball guide sleeve, a vertical guide drawing needle is mounted on the linear ball guide sleeve sliding seat, and the lower end of the vertical guide drawing needle corresponds to the scribing surface of the processed round pipe. The circular tube hole opening and marking device is used, preparation of intersecting lines is not needed, only small holes are formed in the circular tube, and then the device can be used for marking hole lines by adjusting and fixing the positions on the linear guide rails, and the circular tube hole opening and marking device is simple to operate, time-saving and labor-saving.

However, the use finds that when the device is used for scribing a circular tube with a smaller diameter, the scribing and shape taking are more accurate, and the shape error of the cut through opening is smaller; when a round pipe with a larger diameter is scribed, the scribing and shape-taking errors are larger, the reason for the scribing and shape-taking errors is that the axis of a hole and the radial line of the round pipe can not be collinear during drilling, and once the hole is drilled, the shape error of a through opening after cutting is larger, and the welding quality of a joint is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shape instrument is got in marking off of pipe looks through piece to the great problem of shape error is got to the great pipe marking off of diameter in solving above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a shape instrument is got in marking off of pipe looks piece that passes through, includes strong magnetic base, the V-arrangement groove that holds different diameter steel pipes is seted up to strong magnetic base bottom, and the vertical central axis pole that is provided with in strong magnetic base top rotates on the central axis pole to be connected with the guide pin bushing, and guide pin bushing lateral part level is provided with the scale, and sliding connection has the marking off subassembly on the scale, installs the marking off pen on the marking off subassembly, the marking off pen lower extreme with wait to process pipe surface butt.

Further, the scribing component comprises a positioning piece in sliding connection with the graduated scale, a clamping sleeve is arranged at the bottom of the positioning piece, a scribing pen is installed in the clamping sleeve, an inner cavity of the clamping sleeve is matched with the appearance structure of the scribing pen, a fixed blocking piece fixed on the positioning piece is arranged on the upper portion of the clamping sleeve, a sliding groove is formed between the fixed blocking piece and the clamping sleeve, a moving blocking piece is connected in the sliding groove in a sliding mode, one side of the moving blocking piece is abutted to the scribing pen, and the other side of the moving blocking piece is connected with the fixed blocking piece through a spring. The marking pen is a stone pen.

The utility model has the advantages as follows:

1. the bottom of the strong magnetic base is provided with the V-shaped groove, so that the strong magnetic base can be adsorbed on circular pipes with different diameters, the application range is wide, the center point of the marking outline can be determined without drilling a positioning hole on the circular pipe, the personal error is reduced, the marking and shape taking accuracy is ensured, and the welding quality of the joint of the intersecting part is improved;

2. the graduated scale is horizontally fixed on the guide sleeve, so that the size of the marking and shape taking outline can be controlled, the marking and shape taking accuracy is ensured, the field operation is convenient, and the construction difficulty is reduced;

3. the scribing pen is arranged in the clamping sleeve, so that the scribing pen is prevented from shaking left and right in the scribing process, and accurate scribing is ensured; meanwhile, the marking pen is abutted to the movable blocking piece, and under the action of the elastic force of the spring, the marking pen can be always abutted to the surface of the circular tube, so that missing marking is avoided, the marking is clear and recognizable, and the follow-up linear cutting is facilitated.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1-a strong magnetic base, 2-a central shaft rod, 3-a guide sleeve, 4-a graduated scale, 5-a marking assembly, 51-a positioning piece, 52-a clamping sleeve, 53-a movable blocking piece, 54-a fixed blocking piece, 55-a chute, 6-a marking pen and 7-a circular tube.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, a shape instrument is got in marking off of pipe looks piece that passes through, including strong magnetic base 1, the V-arrangement groove that holds different diameter steel pipes is seted up to strong magnetic base 1 bottom, and 1 top of strong magnetic base is vertical to be provided with central axostylus axostyle 2, is connected with guide pin bushing 3 through the bearing rotation on the central axostylus axostyle 2, and 3 lateral part levels of guide pin bushing are provided with scale 4, and sliding connection has marking off subassembly 5 on the scale 4, installs marking off pen 6 on the marking off subassembly 5, and marking off pen 6 lower extreme and 7 surperficial butt on the pipe.

Scribing assembly 5 includes spacer 51 with 4 sliding connection of scale, spacer 51 bottom is provided with clamping sleeve 52, it draws line pen 6 and clamping sleeve 52 inner chamber and 6 appearance structure suit of drawing line pen to install in the clamping sleeve 52, clamping sleeve 52 upper portion is equipped with the piece 54 of deciding the separation blade that is fixed in on spacer 51, be provided with spout 55 between piece 54 of deciding and the clamping sleeve 52, this spout 55 comprises two side shields and sliding connection has movable separation blade 53 in the spout 55, should move separation blade 53 one side and 6 butts of drawing line pen, the opposite side passes through spring coupling with piece 54 of deciding. The marking pen 6 is a stone pen.

The utility model discloses specific working process as follows:

firstly, the strong magnetic base 1 is placed on the circular tube 7, the circular tube 7 is ensured to be placed in the V-shaped groove at the bottom of the strong magnetic base 1 and firmly bonded, then the marking pen 6 is installed in the clamping sleeve 52, the lower end of the marking pen 6 is ensured to be abutted against the circular tube 7 and has a telescopic allowance, then the positioning sheet 51 is slid along the graduated scale 4, after the marking radius of the marking pen 6 is equal to the radius of the intersecting part, the fastening nut at the back of the positioning sheet 51 is screwed, and the positioning sheet 51 is ensured not to slide any more. And finally, the guide sleeve 3 is rotated around the central shaft rod 2, so that a complete and clear intersecting line can be drawn on the surface of the circular tube 7.

Claims (3)

1. A marking off shape-taking tool of a circular tube intersecting piece is characterized in that: including strong magnetic base (1), the V-arrangement groove that holds different diameter steel pipes is seted up to strong magnetic base (1) bottom, and the vertical central axis pole (2) that is provided with in strong magnetic base (1) top rotates on central axis pole (2) and is connected with guide pin bushing (3), and guide pin bushing (3) lateral part level is provided with scale (4), and sliding connection has marking off subassembly (5) on scale (4), installs marking off pen (6) on marking off subassembly (5), marking off pen (6) lower extreme with wait to process pipe surface butt.

2. The scribing and profiling tool for a tubular penetration of claim 1, wherein: the scribing assembly (5) comprises a positioning piece (51) which is in sliding connection with the graduated scale (4), a clamping sleeve (52) is arranged at the bottom of the positioning piece (51), a scribing pen (6) is installed in the clamping sleeve (52), the inner cavity of the clamping sleeve (52) is matched with the appearance structure of the scribing pen (6), a fixed blocking piece (54) fixed on the positioning piece (51) is arranged on the upper portion of the clamping sleeve (52), a sliding groove (55) is formed between the fixed blocking piece (54) and the clamping sleeve (52), a moving blocking piece (53) is connected in the sliding groove (55), one side of the moving blocking piece (53) is abutted to the scribing pen (6), and the other side of the moving blocking piece (53) is connected with the fixed blocking piece (54) through a spring.

3. The scribing and profiling tool for the tubular penetration of claim 2, wherein: the marking pen (6) is a stone pen.

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