CN212056254U

CN212056254U - Connecting joint between square pipe and circular pipe and pressing die

Info

Publication number: CN212056254U
Application number: CN202020786275.3U
Authority: CN
Inventors: 阮慧玲; 刘元元; 袁青红
Original assignee: Anyang Xiangzhou Chemical Equipment Co ltd
Current assignee: Anyang Xiangzhou Chemical Equipment Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-01
Anticipated expiration: 2030-05-13

Abstract

The square pipe is characterized by comprising a connecting joint between the square pipe and the circular pipe, wherein one end of the connecting joint is a circular opening, a cylindrical section is integrally connected below the circular opening, the other end of the connecting joint is a square opening or a rectangle, the square opening is connected to the circular opening through connecting surfaces at the lower parts of four sides, and the length ratio of two adjacent sides of the square opening is 1:1-1: 1.2; the diameter of the round mouth is 0.55-0.65 times of the length of the longer side in the sides forming the square, and on the section in the direction vertical to the plane of the round mouth, the included angle of the connecting line from the square side to the round mouth in the horizontal direction is 30-40 degrees. Under the condition of meeting the parameters of the connecting joint, the connecting joint with one end in the direction and the circular end can be pressed at one time through the male die and the female die.

Description

Connecting joint between square pipe and circular pipe and pressing die

Technical Field

The utility model relates to a dysmorphism attach fitting and embossing mold utensil, attach fitting and embossing mold utensil between in particular to side pipe and the pipe belong to equipment technical field.

Background

In some industrial places, for example, in some gas manufacturing equipment on ships and naval vessels, the upper square pipe (the square pipe has a rectangular or square section) and the upper round pipe are required to be connected in a sealing manner, and gas leakage is also ensured, because the gas leakage can cause serious safety accidents, the traditional method is to perform on-site blanking between the square pipe and the upper round pipe by a wire rod, weld the square pipe and the upper round pipe and the lower round pipe by a plurality of narrow flat plates (similar to a calculus principle) to form hard connection, because the round and square shapes have great difference, the welding operation needs to be divided into a plurality of times to be completed, and the upper end and the lower end of the narrow flat plate are required to be processed, so that the upper end of the narrow flat plate can be welded with the square pipe after being enclosed, and the lower end of the narrow flat plate can be welded with the round pipe after being enclosed, the complexity and the welding seam is, due to the fact that the number of the welding seams is large, the welding seam detection workload is large, and the excessive welding seams can increase the operation task in the aspect of routing inspection in the subsequent using process.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that exists in the connection between present side's pipe and the pipe, provide a attach fitting and embossing mold utensil between side's pipe and the pipe.

In order to realize the purpose of the utility model, the following technical proposal is adopted: the square pipe is characterized by comprising a connecting joint between the square pipe and the circular pipe, wherein one end of the connecting joint is a circular opening, a cylindrical section is integrally connected below the circular opening, the other end of the connecting joint is a square opening or a rectangle, the square opening is connected to the circular opening through connecting surfaces at the lower parts of four sides, and the length ratio of two adjacent sides of the square opening is 1:1-1: 1.2; the diameter of the round mouth is 0.55-0.65 times of the length of the longer side in the sides forming the square, and on the section in the direction vertical to the plane of the round mouth, the included angle of the connecting line from the square side to the round mouth in the horizontal direction is 30-40 degrees.

Further, the method comprises the following steps of; four corners of the square opening are all arc-shaped, the radius of the arc-shaped is 5-10mm, and the radius of the arc-shaped of each corner is gradually increased from the square at the upper end to the round at the lower end.

The embossing mold utensil of the attach fitting between side pipe and the pipe, the embossing mold utensil be used for foretell attach fitting to make, the mould include terrace die and die, die bottom a circular port has, the terrace die bottom surface has a cylinder section that suits with the circular port, the upper end of terrace die is square, the cylinder section is connected squarely through four all around, square bight is convex, the circular in-process radius grow gradually from the square of upper end to the lower extreme in the circular process of every bight, the convex lower extreme and the cylindrical nodical quarter that occupies on whole cylinder week of the circular lower extreme and the cylinder of every bight, two adjacent edges of the convex two of two adjacent bights are handed over on cylindrical same point mutually, have the hole that suits with the cylinder section on the bottom surface of die, the inside shape of die suits with the outside shape of terrace die.

The utility model discloses an actively beneficial technological effect lies in: through many times of tests, the connecting joint with one end in the direction and the other end in the circular shape can be pressed out through the male die and the female die under the condition of meeting the parameters of the connecting joint, if the parameters exceed the range, the connecting joint is difficult to be pressed out through one-step forming, and the defects of serious wrinkling, irregular deformation and the like can occur in the pressing process.

Drawings

FIG. 1 is a schematic view of the present connector from a circular port to a square port.

Fig. 2 is a schematic view of a cross section along a center line in fig. 1.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a square opening; 2: a circular port; 3: connection face, 4: a circular arc shape A; 5: a circular arc shape B; 6: a circular arc C; 7: a circular arc D; 8: a cylindrical section.

As shown in the attached drawings, one end of the connecting joint between the square pipe and the circular pipe is a circular opening 2, a cylindrical section 8 is integrally connected below the circular opening, the other end of the connecting joint is a square opening 1, the square is square or rectangular, and the length ratio of two adjacent sides of the square is 1:1-1: 1.2; the diameter of the round mouth is 0.55-0.65 times of the length of the longer side in the square shape, on the section perpendicular to the plane of the round mouth, the included angle of the connecting line from the square side to the round mouth in the horizontal direction is 30-40 degrees, the angle A shown in figure 2 is the included angle of the connecting line from the square side to the round mouth in the horizontal direction on the section perpendicular to the plane of the round mouth passing through the center of the round mouth, the dotted line at the angle A is a horizontal line, and is not the forming line of the equipment.

The four corners of the square opening are all arc-shaped, the four arc-shaped corners are respectively shown as 4, 5, 6 and 7 in the figure, the radius of the arc-shaped corner of the square opening is 5-10mm, the radius of the arc-shaped corner of each corner is gradually increased from the square at the upper end to the circle at the lower end, and when the arc-shaped corner is connected to the circle, each arc-shaped corner occupies one fourth of the circle.

The pressing die for the connecting joint between the square pipe and the circular pipe is used for manufacturing the connecting joint, and comprises a male die and a female die, wherein the bottom surface of the male die is provided with a cylindrical section matched with a circular hole, the cylindrical section corresponds to the cylindrical section in figure 2, the male die and the female die are the same as the shape in figure 1, for the sake of no repetition, the figures of the male die and the female die are not shown, the description is given by using figures 1 and 2, the upper end of the male die is square, the cylindrical section is connected with the square through four connecting surfaces, namely a front connecting surface, a rear connecting surface, a left connecting surface, a right connecting surface and a left connecting surface, 3 is shown as a connecting surface, the corner of the square is arc-shaped, the arc-shaped part is shown as 4, 5, 6 and 7 in the figure, the radius of the arc-shaped part of each corner is gradually increased from the square at, the two adjacent circular arc edges of the two adjacent corners are intersected at the same point of the cylinder, the bottom surface of the female die is provided with a hole matched with the section of the cylinder, and the shape of the inner surface of the female die is matched with the shape of the outer surface of the male die.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. The attach fitting between square pipe and the pipe, its characterized in that: one end of the connecting joint is a round opening, a cylindrical section is integrally connected below the round opening, the other end of the connecting joint is a square opening, the square opening is square or rectangular, the square opening is connected to the round opening through connecting surfaces at the lower parts of four sides, and the length ratio of two adjacent sides of the square opening is 1:1-1: 1.2; the diameter of the round mouth is 0.55-0.65 times of the length of the longer side in the sides forming the square, and on the section in the direction vertical to the plane of the round mouth, the included angle of the connecting line from the square side to the round mouth in the horizontal direction is 30-40 degrees.

2. The joint for connecting between a square pipe and a round pipe according to claim 1, wherein: four corners of the square opening are all arc-shaped, the radius of the arc-shaped is 5-10mm, and the radius of the arc-shaped of each corner is gradually increased from the square at the upper end to the round at the lower end.

3. The pressing die of the connecting joint between the square pipe and the circular pipe is used for pressing the connecting joint of claim 1 or 2 to manufacture, and is characterized in that: the die comprises a male die and a female die, wherein the bottom surface of the male die is provided with a cylindrical section matched with a circular hole, the upper end of the male die is square, the cylindrical section is connected with the square through four connecting surfaces, the front part, the rear part, the left part and the right part, the corner part of the square is arc-shaped, the radius of the arc-shaped part of each corner part is gradually increased from the square at the upper end to the circular at the lower end, the intersection point of the arc-shaped lower end of each corner part and the cylinder is one fourth of the whole cylinder in the circumferential direction, and two adjacent edges of the arc-shaped.