Split type extrusion forming die for large-diameter three-way pipe fitting

Abstract

The utility model discloses a split type extrusion forming die for a large-caliber three-way pipe fitting, which comprises a bottom plate, a lower die assembly, a frame body and two groups of extrusion mechanisms positioned on two sides of the lower die assembly are arranged on the bottom plate, an upper die assembly is arranged on the lower end face of the frame body, the lower die assembly comprises a first lower die holder and a second lower die holder, and the first lower die holder and the second lower die holder are arranged on the frame body. The first lower die assembly comprises a first lower die base and a second lower die base, lower die liners are arranged on the inner sides of the first lower die base and the second lower die base, the upper die assembly comprises an upper die base, an upper die liner is arranged on the inner side of the upper die base, the two sets of extrusion mechanisms comprise extrusion columns, and the extrusion columns are sleeved with fixing sleeves; the three-way extrusion forming die is suitable for three-way extrusion forming of pipe fittings with different diameters, three-way extrusion forming of pipe fittings with various specifications can be achieved through one set of die, and the universality is good; after extrusion forming and mold opening, the formed three-way pipe falls off through the through groove, and automatic demolding is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way pipe fitting extrusion dies, in particular to a large-caliber three-way pipe fitting split extrusion forming die. Background Art

[0002] Tee fittings are mainly used to change the direction of fluid. They are used at the branch pipes of the main pipeline. They can be classified according to the pipe diameter. They are generally made of carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon asphalt and other materials. Large-diameter tee fittings are key pipeline components used for connecting the main line to the branch line in high-pressure oil and gas pipelines and power generation pipelines.

[0003] The existing extrusion forming mold is only suitable for the tee extrusion forming of a certain diameter pipe fitting. When it is necessary to process tee pipe fittings of various specifications, multiple sets of molds are needed. After the tee pipe fitting is extruded, it needs to be taken out manually, which is inconvenient to demould. Utility Model Content

[0004] The utility model aims to provide a split extrusion forming die for a large-diameter three-way pipe fitting to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a split extrusion forming mold for a large-diameter three-way pipe fitting, comprising a base plate, on which a lower mold assembly and a frame body are arranged, as well as two groups of extrusion mechanisms located on both sides of the lower mold assembly, and an upper mold assembly is arranged on the lower end surface of the frame body, the lower mold assembly comprises a first lower mold base and a second lower mold base, the inner sides of the first lower mold base and the second lower mold base are both provided with lower mold liners, the upper mold assembly comprises an upper mold base, the inner side of the upper mold base is provided with an upper mold liners, and the two groups of extrusion mechanisms comprise extrusion columns, and a fixing sleeve is provided on the extrusion columns.

[0006] Wherein, the lower mold assembly includes a first substrate and a second substrate, and the first lower mold base is located at the upper end of the first substrate, and the second lower mold base is located at the upper end of the second substrate.

[0007] Wherein, the lower die assembly includes two groups of first hydraulic cylinders, the two groups of first hydraulic cylinders are respectively located on one side of the first lower die base and the second lower die base, and one end of the two groups of first hydraulic cylinder push rods are respectively fixed between the first lower die base and the second lower die base.

[0008] Wherein, the upper end surfaces of the first substrate and the second substrate are both provided with sliding grooves, and the bottoms of the first lower mold base and the second lower mold base are both slidably connected to the sliding grooves.

[0009] Wherein, both ends of the lower mold lining are provided with a first fixing edge, and the lower mold lining is fixed to the first lower mold base and the second lower mold base by screws.

[0010] Wherein, the upper die assembly includes a second hydraulic cylinder, and one end of the push rod of the second hydraulic cylinder is fixed to the upper die base.

[0011] Wherein, both ends of the upper mold lining are provided with second fixing edges, and the upper mold lining and the upper mold base are fixed by screws.

[0012] Wherein, the extrusion mechanism comprises a third hydraulic cylinder, one end of the push rod of the third hydraulic cylinder is fixed to the extrusion column, and the fixing sleeve is fixed to the extrusion column by screws.

[0013] Wherein, a chamber is formed between the lower mold assembly and the upper mold assembly, and a pipe fitting is placed inside the chamber.

[0014] Wherein, a through groove is provided on the bottom plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can flexibly adjust the diameter of the groove body of the lower mold assembly by replacing the lower mold liner, flexibly adjust the diameter of the groove body of the upper mold assembly by replacing the upper mold liner, and flexibly adjust the diameter of the extrusion column by replacing the fixed sleeve. The overall mold is suitable for the tee extrusion molding of pipes with different diameters. One set of molds can realize the tee extrusion molding of pipes of various specifications, and has good versatility.

[0017] 2. After extrusion molding, the second hydraulic cylinder drives the upper die seat to remove the die, and the two groups of first hydraulic cylinders drive the first lower die seat and the second lower die seat to separate the die, and the formed three-way pipe falls through the through groove and is automatically demolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 This is a structural schematic diagram of the lower mold assembly of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the upper mold assembly of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the lower mold lining of the utility model;

[0023] Figure 6 It is a schematic diagram of the extrusion forming of the utility model.

[0024] In the figure: 1, bottom plate; 2, lower die assembly; 3, upper die assembly; 4, extrusion mechanism; 5, frame; 6, pipe fitting; 11, through groove; 21, first base plate; 22, second base plate; 211, slide groove; 23, first lower die seat; 24, second lower die seat; 25, lower die lining; 251, first fixed edge; 26, first hydraulic cylinder; 31, second hydraulic cylinder; 32, upper die seat; 33, upper die lining; 331, second fixed edge; 41, third hydraulic cylinder; 42, extrusion column; 43, fixed sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 The utility model provides a technical solution: a split extrusion forming die for a large-diameter three-way pipe fitting, comprising a bottom plate 1, on which a lower die assembly 2 and a frame 5 are arranged, as well as two groups of extrusion mechanisms 4 located on both sides of the lower die assembly 2, an upper die assembly 3 is arranged on the lower end surface of the frame 5, the lower die assembly 2 comprises a first lower die seat 23 and a second lower die seat 24, the inner sides of the first lower die seat 23 and the second lower die seat 24 are both provided with a lower die liner 25, the upper die assembly 3 comprises an upper die seat 32, the inner side of the upper die seat 32 is provided with an upper die liner 33, the two groups of extrusion mechanisms 4 both comprise an extrusion column 42, and a fixing sleeve 43 is sleeved on the extrusion column 42.

[0027] The lower die assembly 2 is composed of a first lower die seat 23 and a second lower die seat 24. During the extrusion molding process, the first lower die seat 23 and the second lower die seat 24 are driven by a first hydraulic cylinder 26 to close to each other and close the mold, and are used as a whole.

[0028] The lower die liner 25 is removable and replaceable. By replacing the lower die liner 25 of different sizes, the diameter of the groove body of the lower die assembly 2 can be adjusted. When in use, according to the diameter of the pipe 6 to be extruded, the lower die liner 25 of the specified specification is selected accordingly, and the lower die liner 25 is fixed to the inner side of the lower die seat to form a new lower die assembly 2 for use;

[0029] The upper die liner 33 is detachable and replaceable. By replacing the upper die liner 33 of different sizes, the diameter of the groove body of the upper die assembly 3 can be adjusted. When in use, the upper die liner 33 of a specified specification is selected according to the diameter of the pipe 6 to be extruded, and the upper die liner 33 is fixed to the inner side of the upper die base 32 to form a new upper die assembly 3 for use;

[0030] The fixing sleeve 43 is removable and replaceable. By replacing the fixing sleeves 43 of different sizes, the diameter of the extrusion column 42 is adjusted. When in use, the fixing sleeve 43 of specified specifications is selected according to the diameter of the pipe 6 to be extruded, and the fixing sleeve 43 is sleeved on the extrusion column 42 so that the extrusion column 42 adapts to the size of the extrusion cavity, thereby forming a new extrusion mechanism 4 for use.

[0031] Among them, the diameter of the groove body of the lower mold assembly 2 is flexibly adjusted by replacing the lower mold lining 25, the diameter of the groove body of the upper mold assembly 3 is flexibly adjusted by replacing the upper mold lining 33, and the diameter of the extrusion column 42 is flexibly adjusted by replacing the fixed sleeve 43, so that the overall mold is suitable for the three-way extrusion molding of pipe fittings 6 with different diameters. A set of molds can realize the three-way extrusion molding of pipe fittings 6 of various specifications, and has good versatility.

[0032] The lower mold assembly 2 includes a first substrate 21 and a second substrate 22 , wherein the first lower mold base 23 is located at the upper end of the first substrate 21 , and the second lower mold base 24 is located at the upper end of the second substrate 22 .

[0033] Among them, the lower mold assembly 2 includes two groups of first hydraulic cylinders 26, and the two groups of first hydraulic cylinders 26 are respectively located on one side of the first lower mold base 23 and the second lower mold base 24. One end of the push rods of the two groups of first hydraulic cylinders 26 are respectively fixed between the first lower mold base 23 and the second lower mold base 24. When the two groups of first hydraulic cylinders 26 are working, they can drive the first lower mold base 23 and the second lower mold base 24 to move.

[0034] Among them, the upper end surfaces of the first substrate 21 and the second substrate 22 are both provided with a slide groove 211, and the bottoms of the first lower mold base 23 and the second lower mold base 24 are slidingly connected to the slide groove 211, and the movement direction of the first lower mold base 23 and the second lower mold base 24 is guided by the slide groove 211.

[0035] Among them, when the two groups of first hydraulic cylinders 26 are working, they respectively drive the first lower die base 23 and the second lower die base 24 to slide along the slide groove 211. When the first lower die base 23 and the second lower die base 24 approach and contact each other, mold closing is achieved. When the first lower die base 23 and the second lower die base 24 move away from each other, mold opening is achieved.

[0036] Among them, the lower mold lining 25 is provided with a first fixed edge 251 at both ends, and the lower mold lining 25 is fixed to the first lower mold base 23 and the second lower mold base 24 by screws. The connection method is simple, the lower mold lining 25 is easy to replace, and the fastening is stable.

[0037] Among them, the upper mold assembly 3 includes a second hydraulic cylinder 31, one end of the push rod of the second hydraulic cylinder 31 is fixed to the upper mold base 32. When the second hydraulic cylinder 31 works, it drives the upper mold assembly 3 to move axially. When the upper mold assembly 3 moves downward and contacts with the lower mold assembly 2, the mold is closed. The upper mold assembly 3 moves upward and resets to open the mold.

[0038] Among them, the second fixed edges 331 are provided at both ends of the upper mold lining 33, and the upper mold lining 33 and the upper mold base 32 are fixed by screws. The connection method is simple, the upper mold lining 33 is easy to replace, and the fastening is stable.

[0039] Among them, the extrusion mechanism 4 includes a third hydraulic cylinder 41, one end of the push rod of the third hydraulic cylinder 41 is fixed to the extrusion column 42, when the two groups of third hydraulic cylinders 41 are working, they drive the two groups of extrusion columns 42 to approach each other for extrusion, the fixing sleeve 43 and the extrusion column 42 are fixed by screws, the connection method is simple, the replacement of the fixing sleeve 43 is convenient, and the fastening is stable.

[0040] Among them, a cavity is formed between the lower mold assembly 2 and the upper mold assembly 3, and a pipe fitting 6 is placed inside the cavity. During extrusion molding, the cut pipe fitting 6 to be extruded is placed in the groove body of the lower mold assembly 2, and the second hydraulic cylinder 31 drives the upper mold base 32 to move down to close the mold. After closing the mold, the third hydraulic cylinders 41 on both sides work to drive the extrusion columns 42 on both sides respectively. The extrusion columns 42 apply extrusion force to both ends of the pipe fitting 6, so that the pipe fitting 6 is extruded inside the cavity to form a three-way pipe.

[0041] Among them, a through groove 11 is opened on the bottom plate 1. After extrusion molding, the second hydraulic cylinder 31 drives the upper mold base 32 to remove the mold, and the two groups of first hydraulic cylinders 26 respectively drive the first lower mold base 23 and the second lower mold base 24 to separate from the mold. The formed three-way pipe falls through the through groove 11 and is automatically demolded.

[0042] Working principle: When in use, according to the diameter of the pipe 6 to be extruded, the lower die liner 25, the upper die liner 33 and the fixed sleeve 43 are replaced accordingly, and the pipe 6 is placed in the groove body of the lower die assembly 2. The second hydraulic cylinder 31 drives the upper die seat 32 to move down to close the mold. After closing the mold, the third hydraulic cylinders 41 on both sides work to drive the extrusion columns 42 on both sides respectively. The extrusion columns 42 apply extrusion force to both ends of the pipe 6, so that the pipe 6 is extruded and formed inside the chamber to form a three-way pipe. After extrusion and forming, the second hydraulic cylinder 31 drives the upper die seat 32 to move the mold away, and the two groups of first hydraulic cylinders 26 respectively drive the first lower die seat 23 and the second lower die seat 24 to separate from the mold. The formed three-way pipe falls through the through groove 11 and is automatically demolded.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split extrusion forming die for a large-diameter three-way pipe fitting, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a lower die assembly (2) and a frame (5), as well as two groups of extrusion mechanisms (4) located on both sides of the lower die assembly (2); the lower end surface of the frame (5) is provided with an upper die assembly (3); the lower die assembly (2) comprises a first lower die seat (23) and a second lower die seat (24); the inner sides of the first lower die seat (23) and the second lower die seat (24) are both provided with a lower die lining (25); the upper die assembly (3) comprises an upper die seat (32); the inner side of the upper die seat (32) is provided with an upper die lining (33); the two groups of extrusion mechanisms (4) both comprise an extrusion column (42); the extrusion column (42) is provided with a fixing sleeve (43).

2. A split extrusion forming die for a large-diameter three-way pipe fitting according to claim 1, characterized in that: The lower mold assembly (2) comprises a first substrate (21) and a second substrate (22), wherein the first lower mold base (23) is located at the upper end of the first substrate (21), and the second lower mold base (24) is located at the upper end of the second substrate (22).

3. A split extrusion forming die for a large-diameter three-way pipe fitting according to claim 2, characterized in that: The lower die assembly (2) comprises two groups of first hydraulic cylinders (26), the two groups of the first hydraulic cylinders (26) are respectively located on one side of the first lower die base (23) and the second lower die base (24), and one end of the push rods of the two groups of the first hydraulic cylinders (26) are respectively fixed between the first lower die base (23) and the second lower die base (24).

4. A split extrusion forming die for a large-diameter three-way pipe fitting according to claim 3, characterized in that: The upper end surfaces of the first substrate (21) and the second substrate (22) are both provided with a slide groove (211), and the bottoms of the first lower die seat (23) and the second lower die seat (24) are both slidably connected to the slide groove (211).

5. A split extrusion forming die for a large-diameter three-way pipe fitting according to claim 4, characterized in that: Both ends of the lower die lining (25) are provided with first fixing edges (251), and the lower die lining (25) is fixed to the first lower die seat (23) and the second lower die seat (24) by screws.

6. The large-diameter three-way pipe split extrusion forming die according to claim 1, characterized in that: The upper die assembly (3) comprises a second hydraulic cylinder (31), one end of a push rod of the second hydraulic cylinder (31) being fixed to an upper die seat (32).

7. The large-diameter three-way pipe split extrusion forming die according to claim 1, characterized in that: Both ends of the upper die lining (33) are provided with second fixing edges (331), and the upper die lining (33) and the upper die base (32) are fixed by screws.

8. The large-diameter three-way pipe split extrusion forming die according to claim 1, characterized in that: The extrusion mechanism (4) comprises a third hydraulic cylinder (41), one end of a push rod of the third hydraulic cylinder (41) is fixed to an extrusion column (42), and the fixing sleeve (43) is fixed to the extrusion column (42) by means of screws.

9. The large-diameter three-way pipe split extrusion forming die according to claim 1, characterized in that: A chamber is formed between the lower mold assembly (2) and the upper mold assembly (3), and a pipe (6) is placed inside the chamber.

10. The large-diameter three-way pipe split extrusion forming die according to claim 1, characterized in that: The bottom plate (1) is provided with a through slot (11).

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