Process for the manufacture of an ultra-soft tube

Abstract

The present application relates to natural gas corrugated pipe technical field, disclose a kind of processing process of super flexible pipe, comprising the following steps: S1, the super flexible pipe processing embryo piece is placed on processing machine tool, using No. 1 knife is carried out spinning processing, and first U-shaped valley is formed;S2, using No. 2 knife is carried out spinning processing, and first U-shaped valley is processed second U-shaped valley;S3, using No. 3 knife is carried out spinning processing, and second U-shaped valley is processed third U-shaped valley;S4, using No. 4 knife is carried out spinning processing, and third U-shaped valley is processed fourth U-shaped valley;S5, using No. 5 knife is carried out spinning processing, and fourth U-shaped valley is processed first inverted omega-shaped valley;S6, using No. 6 knife is carried out spinning processing, and first inverted omega-shaped valley is processed to form final omega-shaped corrugation.The present application is slowly formed by multiple steps, can increase the flexibility of corrugated pipe, and omega-shaped corrugation makes corrugated pipe have compression space, and the shortening phenomenon of corrugated pipe caused by collision or falling can be reduced.

Description

Technical Field

[0001] This invention relates to the field of natural gas corrugated pipe technology, and more specifically to a processing method for an ultra-flexible pipe. Background Technology

[0002] There are various methods for processing ultra-flexible tubes. Currently, the most common method on the market is to make the tube H-shaped at the front and densely waved at the back. Theoretically, the length of the ultra-flexible tube produced by this method is unstable. In practice, it cannot be bumped or dropped during processing, otherwise it will cause the ultra-flexible tube to shorten and affect normal use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the length direction of existing ultra-flexible tubes is unstable, and they are prone to shortening after collision or drop.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is to provide a processing method for ultra-flexible tubes, which are manufactured by spinning process, including the following steps:

[0005] S1. Place the ultra-flexible tube blank on the machining tool and use tool No. 1 to spin process it to form a top arc-shaped peak and a first U-shaped trough between the two peaks.

[0006] S2. Change the tool and use tool No. 2 to perform spinning to process the first U-shaped valley in step S1 into a second U-shaped valley with a greater depth than the first U-shaped valley and a smaller width than the first U-shaped valley.

[0007] S3. Change the tool and use tool No. 3 to perform spinning to process the second U-shaped valley in step S2 into a third U-shaped valley with a greater depth and a smaller width than the second U-shaped valley.

[0008] S4. Change the tool and use tool No. 4 to perform spinning to process the third U-shaped valley in step S3 into a fourth U-shaped valley with a width smaller than the third U-shaped valley.

[0009] S5. Change the tool and use tool No. 5 to perform spinning to process the fourth U-shaped valley in step S4 into the first inverted Ω-shaped valley with a width smaller than the fourth U-shaped valley.

[0010] S6. Change the tool and use tool No. 6 to perform spinning to process the first inverted Ω-shaped trough in step S5 into a second inverted Ω-shaped trough with a greater depth and a smaller width, thus forming an Ω-shaped ripple.

[0011] Optionally, the bottom sides of the first U-shaped trough, the second U-shaped trough, the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough are all provided with arc transitions.

[0012] Optionally, the two sides of the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough are inclined outward to form an acute angle, and the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough have the same depth.

[0013] Optionally, during the formation of crests and troughs in steps S1-S6, the axis of the troughs is shifted to the same side, but the overall line length remains unchanged.

[0014] In summary, the process of the present invention slowly forms an inverted Ω-shaped corrugation through multiple steps. The multi-step forming can increase the flexibility of the corrugated pipe, and the Ω-shaped corrugation provides the corrugated pipe with compression space, which can reduce the shortening of the corrugated pipe caused by collisions or drops, and increase the product qualification rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the molding process in S1 and S2 in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the molding process in S3 and S4 in an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the molding process in steps S5 and S6 of this embodiment of the invention. Detailed Implementation

[0018] The following combination Figure 1-3 The present invention will be described in further detail below.

[0019] This invention discloses a processing method for ultra-flexible tubes, which are manufactured by spinning, including the following steps:

[0020] S1. Place the ultra-flexible tube blank on the machining tool and use tool No. 1 to spin process it to form a top arc-shaped peak and a first U-shaped valley between the two peaks. The bottom of the first U-shaped valley has an arc transition on both sides.

[0021] Specifically, the depth of the first U-shaped trough is 1.55±0.1cm, the width is 3.20±0.1cm, the distance between the peaks on both sides of each first U-shaped trough is 5.00±0.1cm, and the radius of the arc at the bottom of the first U-shaped trough is 10.00±0.1cm.

[0022] S2. Change the tool and use tool No. 2 to perform spinning to process the first U-shaped valley in step S1 into a second U-shaped valley with a greater depth and a smaller width. The bottom of the second U-shaped valley has rounded transitions on both sides.

[0023] Specifically, the depth of the second U-shaped trough is 2.09±0.1cm, the width is 2.44±0.1cm, the distance between the peaks on both sides of each second U-shaped trough is 4.36±0.1cm, the radius of the arc at the bottom of the second U-shaped trough is 1.50±0.1cm, and the centerline of the second U-shaped trough is offset to the right by 0.64±0.1cm compared to the first U-shaped trough.

[0024] S3. Change the tool and use tool No. 3 to perform spinning to process the second U-shaped valley in step S2 into a third U-shaped valley with a greater depth and a smaller width. The bottom of the third U-shaped valley has rounded transitions on both sides, and the two sides of the third U-shaped valley are inclined outward to form an acute angle.

[0025] Specifically, the depth of the third U-shaped trough is 2.48±0.1cm, the width is 1.94±0.1cm, the distance between the peaks on both sides of each third U-shaped trough is 3.86±0.1cm, the radius of the arc at the bottom of the third U-shaped trough is 0.60±0.1cm, the centerline of the third U-shaped trough is offset to the right by 0.50±0.1cm compared to the second U-shaped trough, and the outward tilt angle of the two sides of the third U-shaped trough is 63±1 degrees.

[0026] S4. Change the tool and use tool No. 4 to perform spinning to process the third U-shaped valley in step S3 into a fourth U-shaped valley with a width smaller than the third U-shaped valley. The bottom of the fourth U-shaped valley has rounded transitions on both sides, and the two sides of the fourth U-shaped valley are inclined outward to form acute angles.

[0027] Specifically, the depth of the fourth U-shaped trough is 2.48±0.1cm, the width is 1.60±0.1cm, the distance between the peaks on both sides of each fourth U-shaped trough is 3.30±0.1cm, the radius of the arc at the bottom of the fourth U-shaped trough is 0.60±0.1cm, the centerline of the fourth U-shaped trough is offset to the right by 0.56±0.1cm compared to the third U-shaped trough, and the outward tilt angle of the two sides of the fourth U-shaped trough is 43±1 degrees.

[0028] S5. Change the tool and use tool No. 5 to perform spinning processing. The fourth U-shaped valley in step S4 is processed into the first inverted Ω-shaped valley with a width smaller than the fourth U-shaped valley. The bottom of the first inverted Ω-shaped valley has rounded transitions on both sides, and the two sides of the first inverted Ω-shaped valley are inclined outward to form acute angles.

[0029] Specifically, the depth of the first inverted Ω-shaped trough is 2.48±0.1cm, the width is 1.16±0.1cm, the distance between the peaks on both sides of each first inverted Ω-shaped trough is 2.66±0.1cm, the radius of the arc at the bottom of the first inverted Ω-shaped trough is 0.60±0.1cm, the centerline of the first inverted Ω-shaped trough is offset to the right by 0.66±0.1cm compared to the fourth U-shaped trough, and the outward tilt angle of the two sides of the first inverted Ω-shaped trough is 23±1 degrees.

[0030] S6. Change the tool and use tool No. 6 to perform spinning to process the first inverted Ω-shaped trough in step S5 into a second inverted Ω-shaped trough with a greater depth than the first inverted Ω-shaped trough and a smaller width than the first inverted Ω-shaped trough, thus forming an Ω-shaped ripple.

[0031] Specifically, the depth of the second inverted Ω-shaped trough is 2.50±0.1cm, the width is 0.60±0.1cm, the distance between the peaks on both sides of each second inverted Ω-shaped trough is 2.10±0.1cm, the radius of the arc at the bottom of the second inverted Ω-shaped trough is 0.60±0.1cm, and the centerline of the second inverted Ω-shaped trough is offset to the right by 0.56±0.1cm compared to the first inverted Ω-shaped trough.

[0032] In a further embodiment, the bottom sides of the first U-shaped trough, the second U-shaped trough, the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough are all provided with arc transitions. The two sides of the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough are inclined outward to form acute angles. The third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough have the same depth. When the crests and troughs are formed in steps S1-S6, the axis of the troughs is shifted to the same side, but the overall line length remains unchanged.

[0033] In actual operation, the number of cutters can be adjusted according to the required depth and width of the corrugations, so that the workpiece gradually forms the required corrugation shape.

[0034] Example

[0035] The processing method of the ultra-flexible tube in this embodiment is manufactured by spinning, and includes the following steps:

[0036] S1. Reference Figure 1 The ultra-flexible tube blank is placed on the machining tool and spun using tool No. 1 to form a top arc-shaped peak and a first U-shaped trough between the two peaks. The depth of the first U-shaped trough is 1.55cm, the width is 3.20cm, the distance between two adjacent peaks is 5.00cm, and the radius of the arc at the bottom of the first U-shaped trough is 10.00cm.

[0037] S2. Change the tool and use tool No. 2 to spin-process the first U-shaped trough into the second U-shaped trough. The depth of the second U-shaped trough is 2.09cm, the width is 2.44cm, the distance between two adjacent peaks is 4.36cm, the radius of the arc at the bottom of the second U-shaped trough is 1.50cm, and the center line of the second U-shaped trough is offset to the right by 0.6421cm compared to the first U-shaped trough, while the main line length remains unchanged.

[0038] S3. Reference Figure 2Change the cutting tool and use tool #3 to spin-process the second U-shaped trough into a third U-shaped trough. The depth of the third U-shaped trough is 2.48cm, the width is 1.94cm, the distance between two adjacent peaks is 3.86cm, the radius of the arc at the bottom of the third U-shaped trough is 0.60cm, the centerline of the third U-shaped trough is offset to the right by 0.50±0.1cm compared to the second U-shaped trough, the main length remains unchanged, and the two sides of the third U-shaped trough tilt outward at an angle of 63 degrees.

[0039] S4. Change the tool and use tool No. 4 to spin-process the third U-shaped trough into the fourth U-shaped trough. The depth of the fourth U-shaped trough is 2.48cm, the width is 1.60cm, the distance between two adjacent peaks is 3.30cm, the radius of the arc at the bottom of the fourth U-shaped trough is 0.60cm, the centerline of the fourth U-shaped trough is offset to the right by 0.5593cm compared to the third U-shaped trough, the main length remains unchanged, and the two sides of the fourth U-shaped trough tilt outward at an angle of 43 degrees.

[0040] S5. Reference Figure 3 Change the tool and use tool #5 to spin-process the fourth U-shaped trough into the first inverted Ω-shaped trough. The depth of the first inverted Ω-shaped trough is 2.48cm and the width is 1.16cm. The distance between the peaks on both sides of each first inverted Ω-shaped trough is 2.66cm. The radius of the arc at the bottom of the first inverted Ω-shaped trough is 0.60cm. The centerline of the first inverted Ω-shaped trough is offset to the right by 0.60cm compared to the fourth U-shaped trough. The main length remains unchanged. The outward tilt angle of the two sides of the first inverted Ω-shaped trough is 23 degrees.

[0041] S6. Change the tool and use tool #6 to spin-process the first inverted Ω-shaped trough into a second inverted Ω-shaped trough. The depth of the second inverted Ω-shaped trough is 2.50cm and the width is 0.60cm. The distance between the peaks on both sides of each second inverted Ω-shaped trough is 2.10cm. The radius of the arc at the bottom of the second inverted Ω-shaped trough is 0.60cm. The centerline of the second inverted Ω-shaped trough is offset to the right by 0.60cm compared to the first inverted Ω-shaped trough. The main length remains unchanged, and finally an Ω-shaped ripple is formed.

[0042] This invention slowly spins the components through multiple steps to form an inverted Ω-shaped corrugation. The multi-step forming process increases the flexibility of the corrugated pipe, and the Ω-shaped corrugation provides the corrugated pipe with compression space, which can reduce the shortening of the corrugated pipe caused by collisions or drops, thereby increasing the product qualification rate.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A processing method for an ultra-flexible tube, characterized in that, Manufactured by spinning process, including the following steps: S1. Place the ultra-flexible tube blank on the machining tool and use tool No. 1 to spin process it to form a top arc-shaped peak and a first U-shaped trough between the two peaks. S2. Change the tool and use tool No. 2 to perform spinning to process the first U-shaped valley in step S1 into a second U-shaped valley with a greater depth than the first U-shaped valley and a smaller width than the first U-shaped valley. S3. Change the tool and use tool No. 3 to perform spinning to process the second U-shaped valley in step S2 into a third U-shaped valley with a greater depth and a smaller width than the second U-shaped valley. S4. Change the tool and use tool No. 4 to perform spinning to process the third U-shaped valley in step S3 into a fourth U-shaped valley with a width smaller than the third U-shaped valley. S5. Change the tool and use tool No. 5 to perform spinning to process the fourth U-shaped valley in step S4 into the first inverted Ω-shaped valley with a width smaller than the fourth U-shaped valley. S6. Change the tool and use tool No. 6 to perform spinning to process the first inverted Ω-shaped trough in step S5 into a second inverted Ω-shaped trough with a greater depth and a smaller width, thus forming an Ω-shaped ripple.

2. The processing method for the ultra-flexible tube according to claim 1, characterized in that, The bottom sides of the first U-shaped trough, the second U-shaped trough, the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough are all provided with arc transitions.

3. The processing method for the ultra-flexible tube according to claim 2, characterized in that, The third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough have their two sides inclined outward to form acute angles, and the third U-shaped trough, the fourth U-shaped trough, and the first inverted Ω-shaped trough have the same depth.

4. The processing method for the ultra-flexible tube according to claim 1, characterized in that, In steps S1-S6, when the crests and troughs are formed, the axis of the troughs shifts to the same side, but the overall line length remains unchanged.

Images