CN2633453Y - Steel butt welding seamless three-way and four-way pipe forming mold - Google Patents

Abstract

The utility model relates to a die for producing pipe pieces which adopts a pulling, drawing and expanding synthetic new process, especially a steel molding die for a butt welding seamless three-way or four-way pipe piece. Both sides of a concave die of the die are provided with die opening carriers which are fixed with the die to form a frame structure. A flange at the top end of a clamping hydraulic cylinder is movably matched with the die opening carriers. The central position of the concave die is provided with a liquid filling sac. The lower part of the liquid filling sac is fixedly connected with a lower mandrel on a lower convex die, and the upper part contacts an upper mandrel on an upper convex die in a floating method. A protected rubber cushion is installed among the liquid filling sac and the upper and the lower mandrels. The increase of the die opening carriers makes the concave die easy to clamp, raises work efficiency and improves dependability. Liquid is filled by the liquid filling sac, liquid leakage is stopped, the height of an outlet nozzle is ensured, and the rate of finished products is increased. At the same time, the utility model solves the problem that the four-way pipe piece is difficult to mold in the molding process because of increased volume.

Description

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

Technical field:

The utility model relates to the mould that adopts the comprehensive new technology that pushes away, draws, expands to produce pipe fitting, particularly a kind of steel butt welding seam-less T-joint, four-way pipe fitting shaping mould.

Background technology:

The pipe fitting of using in steel butt welding seam-less T-joint, the four-way pipeline engineering, the U.S. has formulated product standard in 1986, and China has formulated national standard in 1992.Stipulate in the standard that industry engineering pipelines such as oil, chemical industry, water power, metallurgy, natural gas, weaving all must adopt this kind version, its advantage is to reduce the branch flow resistance to reach more than 30%.All adopt special plane production at present both at home and abroad, this special plane cost an arm and a leg and range of application less.Chinese patent ZL94220701.7 discloses a kind of 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, and the scope of application is little.Though the applicant has applied for the utility model patent (patent No.: 99208685) of a steel butt welding seam-less T-joint, four-way pipe fitting shaping mould on April 28th, 1999, be intended to improve above-mentioned deficiency of the prior art, but still it is perfect not to the utmost, especially produce four-way pipe fitting and form difficulty, exist topping up to leak, go out to chew the defective that does not highly reach designing requirement, also exist in addition the die clamping structure inadequately rationally, go out to chew wall thickness, the relatively poor problem of the peripheral uniformity.

Summary of the invention:

Goal of the invention of the present utility model provides a kind of steel butt welding seam-less T-joint, four-way pipe fitting shaping mould of realizing the many kinds of a mould, yield rate height, low cost of manufacture, to solve existing defective of above-mentioned background technology and deficiency.

The technical scheme that realizes the foregoing invention purpose is: this steel butt welding seam-less T-joint, four-way pipe fitting shaping mould comprise the chassis, go up convex mould base, the lower punch seat, go up punch, lower punch, die, cope match-plate pattern, lower bolster, upper guide post, down guide pillar, go up mandrel, mandrel, rubber spring, clamping hydraulic cylinder down, this upper and lower convex mould base is fixed with cope match-plate pattern and chassis respectively, and this upper and lower punch is embedded in respectively on this upper and lower convex mould base; The two ends, chassis are by being equipped with down guide pillar with its fixing following guide pillar holder, and this lower bolster movable set is descending on the guide pillar, are provided with the rubber spring between itself and the chassis, and two ends are equipped with by bent plate respectively and are fixedly stepped up hydraulic cylinder on it; Said lower punch seat is slidingly matched by lining and this lower bolster, the cope match-plate pattern two ends are respectively by being equipped with upper guide post with its fixing upper guide post holder, and the top thick stick is housed, aforementioned bent plate upper end is fixed with the upper guide bush of this upper guide post, is provided with the rubber spring between lower bolster and this thick stick end, top; Die is housed in this die to chew, counter punch, counter punch control oil cylinder are housed respectively in the blind hole that this die goes out to chew, go out to chew and insert, this counter punch control oil cylinder links to each other with feed tube; These die both sides respectively are provided with die clamping plate, these die both sides also are provided with the die sinking frame that is frame structure, this die sinking frame is fixedlyed connected with described die clamping plate both sides, and flange is equipped with on the piston rod top that aforementioned fixation is stepped up hydraulic cylinder, and this flange and this die sinking frame are movingly; This die center is provided with fluid filled sac, fixedlys connected with the following mandrel on the lower punch in the bottom of this fluid filled sac, and top contacts with the last mandrel on the last punch is unsteady, between fluid filled sac and this upper and lower mandrel proof rubber pad is housed also; Be provided with the gap between the hold-down screw under aforementioned lower punch seat, lower punch reach in the mandrel and each autonomous agent, this upper end, gap is chewed with the oiling on the fluid filled sac and is communicated with, and its lower end is communicated with the hydraulic oil interface of supercharging device.

Steel butt welding seam-less T-joint, four-way pipe fitting shaping mould according to technique scheme realizes owing to improved clamping plate die sinking mode, have increased the die sinking frame, make die clamp die sinking and carry out easily, have improved operating efficiency, have increased reliability; Adopt the fluid filled sac topping up, stopped leak of liquid, improved yield rate, guaranteed to chew height, reach standard-required, omit enlarging technology, periphery has evenly reduced equipment and has exerted oneself, and saves electric power, has improved service life of equipment; The Hydraulic Station supercharging device has solved the problem that causes the moulding difficulty in the four-way pipe fitting forming process because of the volume increase.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

The specific embodiment:

Provide a specific embodiment of the present utility model below in conjunction with accompanying drawing.

The described steel butt welding of this embodiment seam-less T-joint, the four-way pipe fitting shaping mould is by chassis 1, following guide pillar holder 2, following guide pillar 3, lower bolster 4, rubber spring 5, bent plate 6, clamping hydraulic cylinder 7, flange 8, die sinking frame 9, upper guide bush 10, upper guide post holder 11, upper guide post 12, cope match-plate pattern 13, die clamping plate 14, go out to chew and insert 15, counter punch control oil cylinder 16, counter punch 17, last convex mould base 18, last punch 19, last mandrel 20, proof rubber pad 21, fluid filled sac 22, counter punch control oil cylinder piston 23, top thick stick 24, die 25, following mandrel 26, lower punch seat 27, lower punch 28, hydraulic oil interface 29, lining 30, oiling chews 31, die goes out to chew 32, compositions such as feed tube 33 and die sinking hydraulic press.Among this embodiment, last convex mould base 18, lower punch seat 27 are fixedlyed connected with chassis 1 with cope match-plate pattern 13 respectively, and last punch 19, lower punch 28 are embedded in respectively on convex mould base 18, the lower punch seat 27.1 two ends, chassis are by being equipped with down guide pillar 3 with its fixing following guide pillar holder 2, lower bolster 4 movable sets are on following guide pillar 3, be provided with rubber spring 5 between itself and the chassis 1, two ends are equipped with by bent plate 6 respectively and are fixedly stepped up hydraulic cylinder 7 on it, and said lower punch seat 27 also is slidingly matched by lining 30 and this lower bolster 4.Cope match-plate pattern 13 two ends are respectively by being equipped with upper guide post 12 with its fixing upper guide post holder 11, and top thick stick 24 is housed, and aforementioned bent plate 6 upper ends are fixed with the upper guide bush 10 of this upper guide post 12, are provided with rubber spring 5 between lower bolster 4 and this top thick stick 24 ends.In this die 25 die is housed and to chew 32, this die goes out to chew to be equipped with respectively in 32 the blind hole counter punch 17, counter punch control oil cylinder 16, goes out to chew and insert 15, and this counter punch control oil cylinder 16 links to each other with feed tube 33; These die 25 both sides respectively are provided with die clamping plate 14, these die 25 both sides also are provided with the die sinking frame 9 that is frame structure, this die sinking frame 9 is fixedlyed connected with described die clamping plate 14 both sides, and flange 8 is equipped with on the piston rod top that aforementioned fixation is stepped up hydraulic cylinder 7, and this flange 8 and this die sinking frame 9 are movingly.These die clamping plate 14 utilize this die sinking frame 9 to make 4 supports in its both sides stressed, have changed in the past that die clamping plate 14 only have a middle part stress point, and cause die clamping plate 14 to produce strain when die sinking, the disadvantage that causes negative interaction that die sinking is obstructed to die sinking.These die 25 centers are provided with fluid filled sac 22, fixedly connected with the following mandrel 26 on the lower punch 28 in the bottom of this fluid filled sac 22, and the last mandrel 20 on top and the last punch 19 floats and contacts.This fluid filled sac 22 is airtight containers, and there is steam vent its upper end, adds the sealing gasket sealing with screw after being full of liquid.Replace rubber bar in the past with fluid filled sac 22, its advantage is to save the more expensive rubber of price, saves the filler time, improves effect, the more important thing is that reduction equipment exerts oneself, and increases to chew height, save turn over chew, the reaming two procedures, reduce cost greatly.Between this fluid filled sac 22 and last mandrel 20 and the following mandrel 26 proof rubber pad 21 is housed also, is out of shape with its disengaging behind fluid filled sac 22 topping ups preventing, influence Forming Quality.Be provided with the gap between the hold-down screw under aforementioned lower punch seat 27, lower punch 28 reach in the mandrel 26 and each autonomous agent, this upper end, gap is chewed 31 with the oiling on the fluid filled sac 22 and is communicated with, its lower end is communicated with the hydraulic oil interface 29 of supercharging device, and hydraulic oil gap thus arrives oiling and chews 31 and enter fluid filled sac 22.

Operation principle of the present utility model is: at first chassis 1 is fixed on the workbench of liquid press, cope match-plate pattern 13 is fixed on the slide unit of hydraulic press, to be put into the cavity of die 25 and insert fluid filled sac 22 by the moulding pipe fitting, utilize die clamping plate 14 to clamp from both sides with die 25 by clamping hydraulic cylinder 7, the primer fluid press, make the hydraulic press slide unit descending, when last mandrel 20, when mandrel 26 inserts in the pipe fitting down, stop solution press slide unit is descending, controls oil cylinder 16 and fluid filled sac 22 internal-filling liquids by feed tube 33 and hydraulic oil interface 29 to counter punch respectively then.When reaching 20Mpa, fluid pressure stops topping up, it is descending that the primer fluid press makes its slide unit continuation simultaneously, rubber spring 5 between rubber spring 5, lower bolster 4 and the top thick stick 24 between lower bolster 4 and the chassis 1 is compressed simultaneously at this moment, make lower bolster 4 float downwards, drive die 25 simultaneously floats thereupon, last punch 19, lower punch 28 relative dies 25 are done reverse motions, and pipe fitting is compressed moulding.Be compressed in the process of moulding at pipe fitting, pipe fitting inserts 15 to outer lug along going out to chew, and lug boss branch attenuate gradually, continues attenuate for limiting it, counter punch 17 is under the effect of the piston 23 of counter punch control oil cylinder 16, be pressed in the bossing of pipe fitting, along with the pipe fitting bossing increases gradually, the pressure that counter punch 17 is subjected to is increasing, after surpassing certain pressure, counter punch control oil cylinder 16 retreats counter punch 17 by the overflow valve automatically unloading, to realize the stretching of tee pipe fitting.When drawing four-way pipe fitting, increase and adorn a cover counter punch device and get final product.After pulling process is finished,, make it unclamp die 25, pipe fitting is taken out, finish the whole operation process by clamping hydraulic cylinder 7 pulling die clamping plate 14.

Claims (1)

1, a kind of steel butt welding seam-less T-joint, four-way pipe fitting shaping mould, comprise the chassis, go up convex mould base, the lower punch seat, go up punch, lower punch, die, cope match-plate pattern, lower bolster, upper guide post, down guide pillar, go up mandrel, mandrel, rubber spring, clamping hydraulic cylinder down, this upper and lower convex mould base is fixed with cope match-plate pattern and chassis respectively, and this upper and lower punch is embedded in respectively on this upper and lower convex mould base; The two ends, chassis are by being equipped with down guide pillar with its fixing following guide pillar holder, this lower bolster movable set is on following guide pillar, be provided with the rubber spring between itself and the chassis, two ends are equipped with by bent plate respectively and are fixedly stepped up hydraulic cylinder on it, and said lower punch seat is slidingly matched by lining and this lower bolster; The cope match-plate pattern two ends are respectively by being equipped with upper guide post with its fixing upper guide post holder, and the top thick stick is housed, and the upper guide bush of this upper guide post is equipped with in aforementioned bent plate upper end, and lower bolster and this are taken blame for others and be provided with the rubber spring between the end; Die is housed in this die to chew, counter punch, counter punch control oil cylinder are housed respectively in the blind hole that this die goes out to chew, go out to chew and insert, this counter punch control oil cylinder links to each other with feed tube, and the die both sides respectively are provided with die clamping plate, it is characterized in that:

A, these die both sides also are provided with the die sinking frame that is frame structure, and this die sinking frame is fixedlyed connected with described die clamping plate both sides, and flange is equipped with on the piston rod top that aforementioned fixation is stepped up hydraulic cylinder, and this flange and this die sinking frame are movingly;

B, this die center are provided with fluid filled sac, fixedly connected with the following mandrel on the lower punch in the bottom of this fluid filled sac, and top contacts with the last mandrel on the last punch is unsteady, between fluid filled sac and this upper and lower mandrel proof rubber pad is housed also;

Be provided with the gap between the hold-down screw under c, this lower punch seat, lower punch reach in the mandrel and each autonomous agent, this upper end, gap is chewed with the oiling on the fluid filled sac and is communicated with, and its lower end is communicated with the hydraulic oil interface of supercharging device.