CN2197140Y

CN2197140Y - Model for welding T-shape seamless pipes

Info

Publication number: CN2197140Y
Application number: CN 94220701
Authority: CN
Inventors: 孙善堂; 柳宝占
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-07
Filing date: 1994-09-07
Publication date: 1995-05-17
Anticipated expiration: 2004-09-07

Abstract

The utility model discloses a model for steel welding T-shaped seamless contoured die which belongs to the production die of T-shaped pipe, and comprises a chassis, a fixed cavity die, a movable cavity die, an upper terrace die, a lower terrace die and a hydraulic mechanism. The utility model is characterized in that the two sides of the cavity die are equipped with cavity die cards; the fixed die is provided with an outlet mouth insert and a float inverse terrace die; an upper shoe is connected with a rubber spring at a lower shoe through an ejector rod; the rubber spring is set up between the lower shoe and the chassis. The structure of the utility model is reasonable, work is stable, and the utility model can form a single cut, has high production efficiency and good quality. The utility model is an ideal T-shaped contoured die.

Description

Model for welding T-shape seamless pipes

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

Such mould of China's use at present, have plenty of and introduce Siemens, manufacturing cost is very high, and the die locking that has adopts cover locking, require the hydraulic press closed height big, need to use, and the folding mould time is long, in addition to hydraulic press transformation, all can not one-shot forming to the reducer tee pipe fitting, production process is many, and efficient is low, poor product quality.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and a kind of structure is more reasonable, cost is low, work efficiency is high, the steel butt welding seam-less T-joint pipe fitting shaping mould of good product quality and provide.

The purpose of this utility model be achieved in that it comprise the chassis, fixedly die, movable matrix, go up punch, lower punch and hydraulic mechanism, respectively be provided with a die card in fixedly die and movable matrix both sides, it respectively be installed in lower cross base on the piston rod of oil cylinder be connected; In fixing die, be equipped with out to chew and insert, go out to chew India-rubber spring and unsteady counter punch are installed in the blind hole of inserting; Lower punch is fixed by lower punch holder and chassis, guide pin bushing is housed on the die shoe, guide pin bushing and lower punch holder are slidingly matched, be provided with the rubber spring between die shoe and chassis, the guide pillar lower end is fixed on the chassis, top cooperates with die shoe is movable, be separately installed with bent plate down at the die shoe two ends, in the upper bolster center fixed upper cavity die is arranged, two ends are separately installed with bent plate, last bent plate and following bent plate guide rail are slidingly connected, and also are separately installed with push rod at upper bolster four jiaos, and the push rod lower end is passed through the rubber spring and is connected with die shoe.

Compared with prior art, the utility model has following advantage:

1, owing to adopted die two re-entrant mold fastening clips, shortened the clamping stroke, folding die speed is fast, saves time, and does not need equipment is transformed, and conventional equipment all can use.

2, owing to adopted unsteady counter punch, the reduction of having controlled pipe fitting outlet position is excessive, has guaranteed a compression moulding, has improved product quality and production efficiency.

3, owing to adopted floating type die shoe, pressure is even, working stability.

The drawing explanation of accompanying drawing:

Fig. 1 is a plan structure schematic diagram of the present utility model.

Fig. 2 is a side-looking structural representation of the present utility model.

Fig. 3 is the insert structure figure that goes out to chew of the present utility model.

Below in conjunction with drawings and Examples in detail the utility model is described in detail.

Respectively be provided with a die card (2) in fixedly die (1) and movable matrix (9) both sides, it respectively be installed in lower cross base (17) on the piston rod (3) of oil cylinder (5) be connected; In fixing die (1), be equipped with out and chew insert (21), go out to chew to insert and India-rubber spring (24) and unsteady counter punch (25) are installed in the blind hole of (21), lower punch (15) is fixing by lower punch holder (14) and chassis (19), guide pin bushing (13) is housed on the die shoe (17), guide pin bushing (13) is slidingly matched with lower punch holder (14), be provided with rubber spring (18) between die shoe (17) and chassis (19), guide pillar (16) lower end is fixed on the chassis (19), top cooperates with die shoe (17) is movable, be separately installed with bent plate (20) down at die shoe (17) two ends, in upper bolster (23) center fixed last punch (10) is arranged, two ends are separately installed with bent plate (22), last bent plate (22) and following bent plate (20) guide rail are slidingly connected, four jiaos at upper bolster (23) also are separately installed with push rod (11), and push rod (11) lower end is connected with die shoe (17) by rubber spring (12).Die card (2) is trapezoidal mouthful, and terraced limit gradient is 3 °.The float end (26) of counter punch (25) is an Internal Spherical Surface, is positioned at the fixedly center of die (1) and movable matrix (9).Rubber spring (18) between die shoe (17) and chassis (19) is four.The rubber spring (24) that goes out to chew to insert in (21) blind hole can also be replaced by hydraulic cylinder.

During the utility model work, chassis (19) are placed on the hydraulic press table top, and upper bolster (23) links to each other with slider of hydraulic press.Pipe fitting is put in fixedly in the die (1) and movable matrix (9), starts die sinking oil cylinder (6), slide block (8) advances along slideway (7), promotes movable matrix (9) and fixing die (1) closure, encases pipe fitting.Start oil cylinder (5), by piston (4), piston rod (3) promotes die card (2), and fixedly die (1) and piston die (9) clamp from both sides.The primer fluid press, slider of hydraulic press presses die holder (23) downwards, last punch (10) moves down thereupon, the compression pipe fitting, meanwhile, last bent plate (22) is descending bent plate (20) slide down along guide rail, push rod (11) moves down, compression rubber spring (12), rubber spring (12) compressing die shoe (17) moves down along guide pillar (16), and compression rubber spring (18), die shoe (17) moves down, then lower punch holder (14), promptly moves on the lower punch (15) along moving on the guide pin bushing (13) with respect to die shoe (17), with last punch (10) bi-directional compression pipe fitting.Increase along with pressure, pipe fitting one side evagination, the progressively approaching concave spherical surface that is installed in unsteady counter punch (25) end (26) on its next door, last pipe fitting projection contacts fully with the concave spherical surface of end (26), when continuing pressurization, when pipe fitting continued evagination, then the pipe fitting convex surface retreated together with (25) one of unsteady counter punch, compression rubber spring (24).At this moment, the wall thickness that pipe fitting protrudes the position is constant, until pipe fitting being pressed into qualified threeway.Open movable matrix (9), take out threeway, place the pipe fitting periodic duty again.

Claims

1, a kind of steel butt welding seam-less T-joint pipe fitting shaping mould, comprise the chassis, fixedly die, movable matrix, go up punch, lower punch and hydraulic mechanism, it is characterized in that:

A, respectively be provided with a die card in fixedly die and movable matrix both sides, it respectively be installed in lower cross base on the piston rod of oil cylinder be connected,

B, in fixing die, be equipped with out to chew and insert, go out to chew India-rubber spring and unsteady counter punch are installed in the blind hole of inserting;

C, lower punch are fixed by lower punch holder and chassis, guide pin bushing is housed on the die shoe, guide pin bushing and lower punch holder are slidingly matched, be provided with the rubber spring between die shoe and chassis, the guide pillar lower end is fixed on the chassis, top cooperates with die shoe is movable, be separately installed with bent plate down at the die shoe two ends, in the upper bolster center fixed upper cavity die is arranged, two ends are separately installed with bent plate, last bent plate and following bent plate guide rail are slidingly connected, and also are separately installed with push rod at upper bolster four jiaos, and the push rod lower end is passed through the rubber spring and is connected with die shoe.

2, steel butt welding seam-less T-joint pipe fitting shaping mould according to claim 1 is characterized in that the die card is trapezoidal mouthful, and terraced limit gradient is 3 °.

3, steel butt welding seam-less T-joint pipe fitting shaping mould according to claim 1, the end of the counter punch that it is characterized in that floating is an Internal Spherical Surface, is positioned at the fixedly center of die and movable matrix.

4, steel butt welding seam-less T-joint pipe fitting shaping mould according to claim 1 is characterized in that the rubber spring between die shoe and chassis is four.

5, steel butt welding seam-less T-joint pipe fitting shaping mould according to claim 1, it is characterized in that chewing the rubber spring of inserting in the blind hole can also be replaced by hydraulic cylinder.