WO2011150580A1

WO2011150580A1 - Ω shape corner pile and it's continuous roll type cold-bend forming method

Info

Publication number: WO2011150580A1
Application number: PCT/CN2010/074789
Authority: WO
Inventors: 王圣清; 胡兆成
Original assignee: 南京万汇钢板桩有限公司
Priority date: 2010-05-31
Filing date: 2010-06-30
Publication date: 2011-12-08
Also published as: CN101956389B; CN101956389A

Abstract

An ω shape comer pile and it's continuous roll type cold-bend forming method are provided. The ω shape corner pile is composed of a horizontal fore shaft, a vertical fore shaft and a connection rib (D). The horizontal fore shaft and the vertical fore shaft connect with two sides of the connection rib (D) respectively to form a structure whose cross-section's shape is ω. The horizontal fore shaft opening to the connection rib (D) and the vertical fore shaft opened downward are both composed of a straight flange (C), an arc sector (B) and a bevel edge (A), and the bevel edge (A) of the vertical fore shaft is located between the connection rib (D) and the straight flange (C) of the vertical fore shaft. The included angle between the bevel edge (A) and the straight flange (C) of the horizontal fore shaft and the vertical fore shaft is 200 degree. The continuous roll type cold-bend forming method makes steel strips to pass 16-pass continuous roll type matched mould to achieve continuous steel plate pile in length. The method is energy-saving and environment- friendly with high production efficiency.

Description

Instruction manual

Ω-shaped corner pile and continuous roll type cold bending forming method thereof

The present invention relates to a steel material for construction, and more particularly to a cold-bending forming method for a steel sheet pile, and more particularly to an o-shaped corner post and a continuous roll cold forming method thereof.

Background technique

At present, steel sheet piles have been widely used in various industries due to their unique advantages. In particular, the continuous cold-formed steel sheet piles developed in recent years have been put into the market in large quantities, so that this energy-saving and material-saving new building materials can be obtained. It has been promoted and applied, but it has been found in use that existing steel sheet piles need to be welded on site or welded to open corners when cornering or splicing different forms of steel sheet piles or fixing steel sheet piles to pipe piles. The pile can fix, connect or turn the steel sheet pile. Among them, the use of on-site welding is not only affected by the operation space and environment, but also difficult to operate, and the welding quality is difficult to guarantee, which affects the overall strength of the steel sheet pile. The use of pre-welding to make corner piles also has difficulty in welding quality. The problem of cold-formed steel sheet piles is matched, so it is imperative to develop a continuous cold-bending forming method for corner piles for steel joints. Summary of the invention

The object of the present invention is to solve the problem that the corner piece of the same steel sheet pile has no suitable corner pile directly affecting the quality of the project, and a continuous roll type cold bending forming method of the ω-shaped corner pile is invented.

One of the technical solutions of the present invention is:

The utility model relates to an ω-shaped corner pile, which is characterized in that it is composed of a horizontal locking mouth, a vertical locking mouth and a connecting rib D, and the horizontal locking mouth and the vertical locking opening are respectively connected with the two sides of the connecting rib D to form a structure with a cross-sectional shape of ω shape. The horizontal locking slot and the vertical locking opening are respectively composed of a straight hook edge C, a circular arc segment B and a diagonal hook edge A. The opening of the horizontal locking opening faces the connecting rib D, the opening of the vertical locking opening is downward, and the vertical locking opening The oblique straight edge A is located between the connecting rib D and the straight hook edge C of the vertical locking mouth, and the angle between the oblique hook edge A and the straight hook edge C in the horizontal locking slot and the vertical locking opening is 200 degrees.

The second technical solution of the present invention is: A continuous roll cold forming method for an omega-shaped corner pile, characterized in that it comprises the following steps:

(1) Preparing materials;

First, the disc-shaped strip coil is cut on the slitter so that the width of the strip after the slit is matched with the total width of the expanded ω-shaped corner post;

Secondly, the cut strip is sent to the uncoiler to be opened and leveled by the leveler and then directly fed into the continuous roll cold bending production line or connected with the existing strip welding on the continuous roll cold bending production line to ensure Continuous production;

(2) Continuous roll cold forming;

First, the strip entering the continuous roll type cold-change line enters the "30 degree lock angle-to-roll mold", causing the strip side to deform upward at 30 degrees from one side, starting from the root of the straight hook side C. A 30 degree angle of deformation occurs downward, and the starting point of the position corresponding to the oblique hook edge is also deformed upward by 30 degrees;

Secondly, the strip that has undergone an angle change of 30 degrees on both sides is smoothly entered into the "60 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 60 degrees, and the other side is straight. The root of the hook C is initially deformed downward by 60 degrees, and the initial angle of the corresponding position of the hooked edge A is increased to 60 degrees.

Thirdly, the strip that has undergone an angular change of 60 degrees on both sides is smoothly entered into the "85 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 85 degrees, and the other side is The root of the straight hook C is initially deformed downward by 85 degrees, and the angle of the oblique hook A corresponding to the starting point is also increased to 85 degrees;

Fourth, smooth the strip with 85 degree angle change on both sides into the "90 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 90 degrees, and the other side The root of the straight hem C is initially increased downward to 90 degrees, and the initial angle of the corresponding position of the slanted edge A is increased to 90 degrees.

Fifth, smooth the strip with 90 degree angle change on both sides into the "115 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 115 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook edge A increases to 115 degrees;

Sixth, smoothing the strip with a 115 degree angle change on both sides into the "135 degree lock angle" In the "roller mode", the angle deformation of the side of the strip is increased to 135 degrees, and the angle of the other side of the sinking side is increased to 135 degrees at the position corresponding to the side of the oblique hook A;

Seventh, smooth the strip that has undergone an angle change of 135 degrees on both sides into the "155 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 155 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook edge A increases to 155 degrees;

Eighth, smooth the strip that has undergone an angle change of 155 degrees on both sides into the "180 degree lock angle to roll mold", so that the angle of the upper side of the strip is increased to 180 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook edge A is also increased to 180 degrees;

Ninth, smooth the strip that has undergone a 180 degree angular change on both sides into the "200 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 200 degrees, and the other sinks. The angle of the oblique hook edge A of one side of the lock is also increased to 200 degrees, and the angle of the side sinking is 105 degrees;

Tenth, smooth the strip with 200 degree angle change on both sides into the "205 degree lock shaping pair roll mold", so that the oblique hook side of the lock on both sides of the strip can rebound freely to 205 degrees while making one side The angle of the sink is increased to 120 degrees;

Eleventh, the above-mentioned shaped strip is smoothed again into the "200 degree lock shaping pair roll mold", so that the oblique hook edge of the lock on both sides of the strip is again shaped to 200 degrees, while the side sinks The angle is increased to 155 degrees; the shaping process is completed, and the horizontal locking deformation is completed;

Twelfth, smoothing the above-mentioned shaped strip into the "vertical lock forming pair roll mold", increasing the angle of one side sinking to 180 degrees, and thus the deformation of the horizontal lock and the vertical lock are completed. ;

Thirteenth, the strips that have been completely deformed by the horizontal lock and the vertical lock are smoothly inserted into the "156 degree rib angle-to-roll mold", so that the middle portion of the strip is convex upward to form an angle of 156 degrees;

Fourteenth, the strip formed with the angle of the 156-degree reinforcing rib is smoothly inserted into the "120-degree reinforcing rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 120 degrees;

Fifteenth, the strip formed with the angle of the 120-degree rib is smoothly inserted into the "75-degree rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 75 degrees;

Sixteenth, smoothing the above-mentioned strip formed with the angle of the 75-degree reinforcing ribs into the "41-degree reinforcing ribs" In the angle-to-roll mode, the middle portion of the strip is further convex upward to form an angle of 41 degrees; (3) cutting;

The continuous ω-shaped corner pile obtained by the above-mentioned continuous roll type cold bending forming is directly or through a shaping mechanism, and is sent to a cutting device to be cut to a desired length.

The beneficial effects of the invention:

The invention provides a matching corner pile for the cold-formed steel sheet pile, which is beneficial to speeding up the progress of the project and improving the quality of the project.

The invention combines the characteristics of the corner pile, solves the continuity and stability of the deformation by reasonably selecting the deformation order and the angle, solves the deformation springback problem after the cold bending by shaping, and simultaneously makes the pair of rollers of the entire cold bending production line. The long service life of the mold is good, which helps to improve the life of the equipment and reduce the production cost.

The roll pressing die used in the present invention has a simple structure and can be designed and manufactured according to the deformation angle. At the same time, the invention also has the following advantages:

i. More professional, professionally applied to cold-formed steel sheet piles, the cross-sectional size and corner angle of corner piles can be designed according to the construction conditions.

ϋ. The process is more convenient, simplified and reasonable. It overcomes the shortcomings of large investment in hot-rolled joints and environmental pollution.

i i i. The specifications are more flexible. By changing the roll mode, it can quickly match the production of various specifications of cold-formed steel sheet piles.

Iv. The invention has continuous production, high efficiency, stable quality and arbitrary length; according to design requirements, the corresponding materials can be connected, and the choice of raw materials is more.

v. The present invention can be applied to the connection between steel sheet piles of various shapes and the corner joints between the same steel sheet piles.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic sectional view showing the structure of an ω-shaped corner post of the present invention.

Fig. 2 is a view showing the state of use of the ω-shaped corner pile of the present invention.

Fig. 3 is a view showing a roll pattern after roll forming of each step in the roll forming process of the ω-shaped corner pile of the present invention. Fig. 4 is a schematic view showing the process of deforming the first to fourth pass locks to 90 ° during the roll forming process of the ω-shaped corner pile of the present invention.

Fig. 5 is a schematic view showing the process of deforming the fifth to eighth passes to 180 ° during the roll forming process of the ω-shaped corner pile of the present invention.

Fig. 6 is a schematic view showing the process of deformation of the 9th to 12th pass locks to 200 ° during the roll forming process of the ω-shaped corner pile according to the present invention, and the hook hooks are simultaneously deformed at an angle.

Fig. 7 is a view showing the forming process of forming the 90° curved hook edge of the 12th to 16th passes in the roll forming process of the ω-shaped corner pile of the present invention.

detailed description

The invention will now be further described with reference to the accompanying drawings and embodiments.

As shown in Figure 1-7.

An ω-shaped corner pile consisting of a horizontal lock, a vertical lock and a connecting rib D. The horizontal lock and the vertical lock are respectively connected with the two sides of the connecting rib D to form a structure having a cross-sectional shape of an ω shape. The horizontal lock and the vertical lock are composed of a straight hook edge (a circular segment Β and a diagonal hook Α, the horizontal lock opening faces the connecting rib D, the vertical locking opening is downward, and the vertical locking mouth is straight The edge A is located between the connecting rib D and the straight hook edge C of the vertical locking opening, and the angle between the oblique hook edge A and the straight hook edge C in the horizontal locking slot and the vertical locking opening is 200 degrees. Ω-shaped corner pile is manufactured. The thickness of the strip can be selected according to requirements, generally 5-16 mm. As shown in Fig. 1, the use state of the ω-shaped corner pile is shown in Fig. 2.

The ω-shaped corner pile of the present invention directly obtains a continuous ω-shaped corner pile which can be infinite length by a continuous roll type cold forming method. The shape of each process after rolling in the entire forming process is as shown in the roll diagram of Fig. 3.

The forming method of the present invention will be further described below with reference to Figs. 4-7.

The forming speed of the strip of this embodiment is 5-32 m / s, and the steel plate is driven by the frictional force of the pair of roll dies, and a tractor can be added for pulling if necessary. The pair of roll molds used in the cold roll forming process can be designed by referring to the drawings and the deformation angles designed by the present invention, and this design is a very common technique for cold roll forming practitioners, and does not require creativity. labor. In order to keep the strip running smoothly, it is possible to use a side roller and a vertical roller for guiding between the rolls.

(1) Preparing materials; First, the disc-shaped strip coil is cut on the slitter so that the width of the strip after the slit is matched with the total width of the expanded o-shaped corner post;

(2) Continuous roll cold forming, which can be divided into 16 steps, the 16 steps are respectively: First, the strip entering the continuous roll type cold changing production line enters the "30 degree lock angle to roll mode", The side of the strip is deformed by an angle of 30 degrees upward, and a 30 degree angle of deformation occurs downward from the root of the straight hook C, and the starting point of the position corresponding to the oblique hook edge is also 30 degrees upward. Angle deformation; Figure 4.

Secondly, the strip that has undergone an angle change of 30 degrees on both sides is smoothly entered into the "60 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 60 degrees, and the other side is straight. The root portion of the hook C first increases the angle of the downward angle to 60 degrees, and simultaneously increases the angle of the upward angle of the starting point corresponding to the position of the oblique hook A to 60 degrees;

Thirdly, the strip that has undergone an angular change of 60 degrees on both sides is smoothly entered into the "85 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 85 degrees, and the other side is The root of the straight hook C is initially deformed downward to 85 degrees, and the angle of the oblique hook A corresponding to the starting point is also increased to 85 degrees;

Fourth, smooth the strip with 85 degree angle change on both sides into the "90 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 90 degrees, and the other side The root of the straight hook edge C first increases downward to 90 degrees, and at the same time increases the angle of the upward angle of the starting point corresponding to the oblique hook edge A to 90 degrees;

Fifth, smooth the strip with 90 degree angle change on both sides into the "115 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 115 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook A increases to 115 degrees;

Sixth, the strip that has undergone an angle change of 115 degrees on both sides is smoothly entered into the "135 degree lock angle-to-roll mold", so that the angle of the upward angle of the strip is increased to 135 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook edge A increases to 135 degrees; Seventh, smooth the strip that has undergone an angle change of 135 degrees on both sides into the "155 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 155 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook edge A increases to 155 degrees;

Eighth, smooth the strip that has undergone an angle change of 155 degrees on both sides into the "180 degree lock angle to roll mold", so that the angle of the upper side of the strip is increased to 180 degrees, and the other sinks. The angle of the occurrence of the angle between the one side and the oblique hook A is also increased to 180 degrees;

Ninth, smooth the strip that has undergone a 180 degree angular change on both sides into the "200 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 200 degrees, and the other sinks. On the one side of the lock, the angle of the oblique hook edge A is also increased to 200 degrees, and the angle of the side sinking is 105 degrees;

Tenth, smooth the strip with 200 degree angle change on both sides into the "205 degree lock shaping pair roll mold", so that the oblique hook side of the lock on both sides of the strip can rebound freely to 205 degrees while making one side The angle of the sink is increased to 120 degrees; as shown in Figure 6.

Twelfth, smoothing the above-mentioned shaped strip into the "vertical lock forming pair roll mold", increasing the angle of one side sinking to 180 degrees, and thus the deformation of the horizontal lock and the vertical lock are completed. ; Figure 6.

Thirteenth, the strips that have been completely deformed by the horizontal lock and the vertical lock are smoothly inserted into the "156 degree rib angle-to-roll mold", so that the middle portion of the strip is convex upward to form an angle of 156 degrees; 7.

Fourteenth, the strip formed with the angle of the 156-degree reinforcing rib is smoothly inserted into the "120-degree reinforcing rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 120 degrees; 7.

Fifteenth, the strip formed with the angle of the 120-degree reinforcing ribs is smoothly inserted into the "75-degree reinforcing rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 75 degrees; 7.

Sixteenth, the strip formed with the angle of the 75-degree reinforcing rib is smoothly inserted into the "41-degree reinforcing rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 41 degrees; 7. In the specific implementation, the reshaping can also be performed before cutting, that is, the strip is again shaped by the integral pair of rollers.

(3) cut off;

The continuous ω-shaped corner pile obtained by the above-mentioned continuous roll type cold bending forming is directly or through a shaping mechanism, and is sent to a cutting device to be cut to a desired length. The parts not covered by the present invention are the same as the prior art or can be implemented by the prior art.

Claims

Claim

1. An ω-shaped corner pile, characterized in that it is composed of a horizontal lock, a vertical lock and a connecting rib (D), and the horizontal lock and the vertical lock are respectively connected with the two sides of the connecting rib (D) to form a sectional shape. In the ω-shaped structure, the horizontal lock and the vertical lock are composed of a straight hook edge (C), a circular arc segment (B) and a diagonal hook edge (A), and the horizontal lock opening faces the connecting rib (D) ), the opening of the vertical lock is downward, and the oblique straight edge (A) of the vertical lock is located between the connecting rib (D) and the straight hook edge (C) of the vertical lock, the horizontal lock and the vertical lock The angle between the oblique hook edge (A) and the straight hook edge (C) in the mouth is 200 degrees.

A continuous roll cold forming method for an omega-shaped corner post according to claim 1, characterized in that it comprises the following steps:

(1) Preparing materials;

(2) Continuous roll cold forming;

First, the strip entering the continuous roll type cold-change production line enters the "30 degree lock angle-to-roll mold", causing the strip side to deform upward at 30 degrees from one side, and the side from the straight hook side (C) The root begins to deform downward at an angle of 30 degrees, and then the starting point of the position corresponding to the oblique hook edge (Α) also deforms upward by 30 degrees;

Secondly, the strip that has undergone an angle change of 30 degrees on both sides is smoothly entered into the "60 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 60 degrees, and the other side is straight. crochet

The root of the (C) is initially deformed downward by 60 degrees, and the initial angle of the corresponding point of the corresponding position of the oblique hook (Α) is also increased to 60 degrees;

Thirdly, the strip that has undergone an angular change of 60 degrees on both sides is smoothly entered into the "85 degree lock angle to roll mold", so that the angle of the upward angle of the strip is increased to 85 degrees, and the other side is The root of the straight hem (C) starts to deform downwards at an angle of 85 degrees, and at the same time makes the slanted edge (Α) The angle of the upward angle that occurs at the starting point is also increased to 85 degrees;

Fourth, smooth the strip with 85 degree angle change on both sides into the "90 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 90 degrees, and the other side Straight hook

The root of the (C) is initially deformed downward by 90 degrees, and the initial angle of the corresponding point of the corresponding position of the oblique hook (A) is increased to 90 degrees;

Fifth, smooth the strip with 90 degree angle change on both sides into the "115 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 115 degrees, and the other sinks. The angle of the angle between the one side and the oblique hook edge (A) increases to 115 degrees;

Sixth, the strip that has undergone an angle change of 115 degrees on both sides is smoothly entered into the "135 degree lock angle-to-roll mold", so that the angle of the upward angle of the strip is increased to 135 degrees, and the other sinks. The angle of the angle between the one side and the oblique hook edge (A) increases to 135 degrees;

Seventh, smooth the strip that has undergone an angle change of 135 degrees on both sides into the "155 degree lock angle to roll mold", so that the angle of the upper side of the strip increases upward to 155 degrees, and the other sinks. The angle of the angle between the one side and the oblique hook edge (A) increases to 155 degrees;

Eighth, smooth the strip that has undergone an angle change of 155 degrees on both sides into the "180 degree lock angle to roll mold", so that the angle of the upper side of the strip is increased to 180 degrees, and the other sinks. The angle of the angle between the one side and the oblique hook edge (A) also increases to 180 degrees;

Ninth, smooth the strip that has undergone a 180 degree angular change on both sides into the "200 degree lock angle to roll mold", so that the angle of the upward angle of the strip increases to 200 degrees, and the other sinks. The angle of the oblique hook edge (A) of one side of the lock is also increased to 200 degrees, and the angle of the side sinking is 105 degrees;

Twelfth, smoothing the above-mentioned shaped strip into the "vertical lock forming pair roll mold", Increasing the angle of one side sinking to 180 degrees, at which point the deformation of the horizontal lock and the vertical lock are all completed;

Sixteenth, the strip formed with the angle of the 75-degree reinforcing rib is smoothly inserted into the "41-degree reinforcing rib angle-to-roll mold", so that the middle portion of the strip is further convex upward to form an angle of 41 degrees;

(3) cut off;