CN2361400Y

CN2361400Y - Steel butt-welded gapless three- and four-way pipe fitting forming block

Info

Publication number: CN2361400Y
Application number: CN 99208685
Authority: CN
Inventors: 孙善堂; 李宝占
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-28
Filing date: 1999-04-28
Publication date: 2000-02-02
Anticipated expiration: 2009-04-28

Abstract

The utility model discloses a steel butt-welded seamless three-way and four-way pipe forming die. It comprises: a base, a lower terrace die base, an upper terrace die base, a groove, an upper terrace die, a lower terrace die, a rubber sheet, a fastening hydraulic cylinder unit assembly, an opening-closing die hydraulic cylinder unit assembly and a hydraulic mechanism. A liquid inlet path is set up between a lower die base and a cavity die. An inverse terrace die controls the outer part of the hydraulic cylinder connecting with the Liquid inlet pipe. The utility model has reasonable design, simple structure. The inverse terrace die adopts hydraulic control, which enlarges the forming range of pipe and reduces factory processing operation, adopts hydraulic bulge forming, which reduces production cost and the body of the cavity die is lengthened, which can satisfy the requirement of four-way production.

Description

Steel butt welding seam-less T-joint, four-way pipe fitting shaping mould

The utility model relates to a kind of production mould of pipe fitting, the shaping mould of particularly a kind of steel butt welding seam-less T-joint, four-way pipe fitting.

Such mould of China's use at present, have plenty of and introduce Siemens, cost an arm and a leg, and operation inconvenience, Patent Office of the People's Republic of China's nineteen ninety-five disclosed utility model patent: the patent No. " ZL 94 2 20701.7 ", " steel butt welding seam-less T-joint pipe fitting shaping mould " does bulging manufacture of materials cost height with rubber bar, can not produce four-way and large-size pipe, accommodation is little, and production process is many, and efficient is low, poor product quality.

The purpose of this utility model just is to overcome weak point of the prior art, provides a kind of simple in structure, and production process is few, and cost is low, efficient height, the steel butt welding seam-less T-joint of wide accommodation, the shaping mould of four-way pipe fitting.

The purpose of this utility model is to realize like this, it comprises: base, the lower punch seat, last convex mould base, die, last punch, lower punch, rubber slab, step up hydraulic cylinder assembly, folding mould oil cylinder assembly and hydraulic mechanism, lower punch is embedded on the lower punch seat, and fix by lower punch seat and base, lining is housed on the die shoe, lining and lower punch seat are slidingly matched, be provided with India-rubber spring between die shoe and the base, the guide pillar lower end is fixed on the base, top cooperates with die shoe is movable, be equipped with at the die shoe two ends and fixedly add the locking oil cylinder bent plate, last punch is contained on the convex mould base and is fixed on the upper bolster, the two ends of upper bolster are provided with guide pillar and push rod, the push rod lower end is connected with die shoe by India-rubber spring, die is housed in die mouth, die goes out in the blind hole of mouth counter punch is housed, counter punch control oil cylinder, piston, going out mouth inserts, in the both sides of die a die card is set respectively, it respectively be contained in die shoe on the piston rod that steps up hydraulic cylinder assembly be connected, be provided with feed pathway between die shoe and the die cavity, counter punch control oil cylinder is outer to link to each other with feed tube;

The purpose of this utility model can realize that also the die card is trapezoidal mouthful by following technical measures, and terraced limit gradient is 3 °-5 °, and the end of counter punch is an Internal Spherical Surface.

The utlity model has following advantage compared to existing technology:

1. reasonable in design, simple in structure;

2. counter punch adopts hydraulic control, has enlarged the moulding scope of pipe fitting;

3. reduce production process, taked hydraulic expanding-forming, reduced production cost;

4. die body lengthening has satisfied the needs of producing four-way;

Accompanying drawing and drawing explanation

Fig. 1 is the utility model front view

Fig. 2 is the utility model vertical view

Below in conjunction with drawings and Examples in detail the utility model is described in detail, it comprises: base 23, lower punch seat 20, last convex mould base 13, die 10, last punch 14, lower punch 22,

rubber slab

16,18, step up hydraulic cylinder assembly 5, folding mould oil cylinder assembly 26 and hydraulic mechanism, lower punch 22 is embedded on the lower punch seat 20, and it is fixing with base 23 by lower punch seat 20, lining 28 is housed on the die shoe 2, lining 28 is slidingly matched with lower punch seat 20, be provided with India-rubber spring 18 between die shoe 2 and the base 23, guide pillar 29 lower ends are fixed on the base 23, top and 2 movable cooperations of die shoe, be equipped with at die shoe 2 two ends and fixedly add locking oil cylinder bent plate 1, last punch 14 is contained on the convex mould base 13 and is fixed on the upper bolster 15, the two ends of upper bolster 15 are provided with guide pillar 7 and push rod 31, push rod 31 lower ends are connected with die shoe 2 by India-rubber spring 16, die is housed in die 10 mouth 11, die goes out in the blind hole of mouth 11 counter punch 6 is housed, counter punch control oil cylinder 9, piston 8, go out mouth and insert 29, in the both sides of die 10 a die card 30 is set respectively, it respectively be contained in die shoe 2 on the piston rod that steps up hydraulic cylinder assembly 5 be connected, be provided with feed pathway 21 between die shoe 2 and die 10 cavitys, link to each other with feed tube 24 outside the counter punch 6 control oil cylinders, die card 30 is trapezoidal mouthful, ladder limit gradient is 3 °-5 °, and the end of counter punch 6 is an Internal Spherical Surface.Operation principle of the present utility model is, at first base 23 is fixed on the lower table of hydraulic press, with on touch the seat be fixed on the slide unit of hydraulic press, pipe fitting 27 is put into the cavity of die 10, utilize die clamping plate 4 to step up from both sides with die 10 by stepping up hydraulic cylinder assembly 5, the primer fluid press, make hydraulic machine slide block down, when last mandrel 12 inserts in the pipe fittings 27 with following mandrel 19, stop hydraulic machine slide block down, then respectively by

feed tube

21,24 control oil cylinder 9 internal-filling liquids with counter punch in pipe fitting 27, when reaching 0.2Mpa, fluid pressure stops topping up, it is descending that the primer fluid press makes its slide block continuation simultaneously, India-rubber spring 18 between this moment die shoe 2 and the base 23, the India-rubber spring 16 that die shoe 2 and push rod are 31 is compressed simultaneously, make die shoe 2 float downwards because lower punch 22 is fixed on the base 23, last punch 14 is fixed on the upper bolster 15, descending along with slider of hydraulic press, floating of die shoe 2, die 10 also and then floats, on, lower punch 14,22 relative dies 10 are made reverse motions, and pipe fitting 27 is compressed moulding.In pipe fitting 27 compressed processes, pipe fitting 27 inserts 29 to outer lug along going out mouth, and lug boss branch is attenuate gradually, continues attenuate for limiting it, and counter punch 6 is pressed in the bossing of pipe fitting 27 under the effect of counter punch control oil cylinder 9 inner carriers 8, along with pipe fitting 27 bossings increase gradually, the pressure that counter punch 6 is subjected to is increasing, and after surpassing certain pressure, counter punch control oil cylinder 9 is by the overflow valve automatically unloading, counter punch 6 is retreated, with the goal of the invention that realizes that pipe fitting 27 stretches.When drawing threeway, place and draw the semicircle die case 25 of pipe fitting 27 on the opposite of counter punch 6, when drawing four-way, remove semicircle die case 25 with the footpath, increase and adorn a cover counter punch device and can realize the object of the invention, after pulling process is finished,, make it unclamp die 10 by stepping up hydraulic cylinder assembly 5 pulling die clamping plate 4, start folding mould oil cylinder assembly 26 then, with die 10 separately, pipe fitting 27 can take out, and finishes the whole operation process.

Claims

1. a steel butt welding seam-less T-joint, four-way pipe fitting shaping mould comprise: base, lower punch seat, go up convex mould base, die, go up punch, lower punch, rubber slab, step up hydraulic cylinder assembly, folding mould oil cylinder assembly and hydraulic mechanism, it is characterized in that:

A. lower punch is embedded on the lower punch seat, and fix by lower punch seat and base, lining is housed on the die shoe, and lining and lower punch seat are slidingly matched, and are provided with India-rubber spring between die shoe and the base, the guide pillar lower end is fixed on the base, top cooperates with die shoe is movable, is equipped with at the die shoe two ends fixedly to add the locking oil cylinder bent plate, and last punch is contained on the convex mould base and is fixed on the upper bolster, the two ends of upper bolster are provided with guide pillar and push rod, and the push rod lower end is connected with die shoe by India-rubber spring;

B., die is housed in die mouth, die goes out to be equipped with in the blind hole of mouth counter punch, counter punch control oil cylinder, piston, go out mouth inserts;

C. in the both sides of die a die card is set respectively, it respectively be contained in die shoe on the piston rod that steps up hydraulic cylinder assembly be connected.

D. be provided with feed pathway between die shoe and the die cavity;

E. counter punch control oil cylinder is outer links to each other with feed tube;

2. according to the described steel butt welding of claim 1 seam-less T-joint, four-way shaping mould, it is characterized in that: the die card is trapezoidal mouthful, and terraced limit gradient is 3 °-5 °.

3. according to the described steel butt welding of claim 1 seam-less T-joint, four-way shaping mould, it is characterized in that: the end of counter punch is an Internal Spherical Surface.