Spigot-and-socket steel pipe and its processing method
Technical field
The present invention relates to pipeline processing technical field, especially a kind of spigot-and-socket steel pipe and its processing method.
Background technology
Bayonet joint is the connection method of generally use, the letter of its structure for larger-diameter pipe of cement and cast iron pipe
Single, installation is convenient, effect is high.But that there are compressive resistances is low for pipe of cement and cast iron pipe, and wall thickness is heavy, plasticity and poor toughness
Disadvantage causes it in discharge pressure height, should not be used when pipeline is aerial.And steel pipe can overcome pipe of cement and cast iron pipe
Disadvantages mentioned above, but for larger diameter steel pipe be connected in site operation then occur some difficulty, because of common welding
Flange connection method because operating difficulties or it is of high cost due to be not suitable for.It typically uses and is welded to connect at present, however at the scene
Especially underground pipeline construction in construction, welding is very inconvenient, and efficiency is low and quality is difficult to ensure.According to more conveniently socket joint
Formula is flexibly connected, then because steel pipe walls are relatively thin, no image of Buddha cast iron pipe is difficult at bell socket by tube end maching with method for turning like that
To realize.For this purpose, " spigot-and-socket soft just dual-purpose joint steel pipe and its system of expansion shaped insertion-type that number of patent application is CN00114232.1
Make method " patent application, it is proposed that technique is dilated using (cold working), make steel pipe both ends respectively by mold shape dilate into
Special size take the lead and plug, but the structure that the connection is taken the lead only is made of expanding straight pipe and arc transition section, and socket joint is not
It surely leans on very much, therefore needs to be welded and fixed connection pipe end sometimes;Taking the lead for steel pipe is required for expansion shaped insertion-type with plug simultaneously, is processed into
This is higher;In addition, will produce higher residual stress after expansion shaped insertion-type, mold is also complex, costly.
Invention content
The purpose of the present invention is to solve the above problem, a kind of spigot-and-socket steel pipe and its processing method are devised.
Realize above-mentioned purpose the technical scheme is that, a kind of spigot-and-socket steel pipe, including steel pipe (1), the steel pipe
One end port is faucet part (2), and the other end port of the steel pipe is socket (3), and the faucet part adds successively from the inside to the outside
Work has the first arc transition section (4), short tube load section (5), the second circular arc transition (6), short tube seal section (7) and is located at bellmouth
Ring baffle (8) at portion port is machined with locating slot (9) on the short tube seal section, is equipped at the port of the socket
Chamfering closes up (10).
Locating slot (9) longitudinal section is the toroidal cavity structure for bending font.
A kind of processing method of spigot-and-socket steel pipe described in claim 1, this method comprises the following steps:
Steel pipe to be processed is placed in the carriage mechanism of rolling pipe-expanding machine by step 1 first, and the socket of steel pipe is fixed
On the position-limit mechanism of rolling flaring machine tail end, then faucet part adjusts rolling flaring against the flaring structure of rolling pipe-expanding machine
Machine makes the flaring mechanism of rolling pipe-expanding machine be moved to operating position, so opens power supply, and the first circle is first rolled out by flaring mechanism
Then arc transition and short tube load section control flaring mechanism and retreat, readjust flaring mechanism in the first circular arc transition and
The second circular arc transition of place and short tube seal section are rolled in the contact of short tube load section again;
Steel pipe after being processed in step 1 is placed in the carriage mechanism of flange film laminator, and makes holding for steel pipe by step 2
Oral area nozzle is placed in the lower die of flange film laminator, is risen the anti-shake support roller of flange film laminator to hold steel pipe, is then started electricity
Machine, by the cooperation of the upper and lower mould of flange film laminator, the short tube seal section in steel pipe faucet part nozzle and nozzle end difference
Process locating slot and ring baffle;
The socket nozzle end of steel pipe after being processed in step 2 is carried out chamfered edge or shell nosing treatment, obtained by step 3
Spigot-and-socket coupling finished product.
The flaring mechanism is track (12), the electronic supporting plate of installation in orbit by being arranged in rack (11)
(13), the column (14) that is fixed on electronic splint upper surface in rack and drives electronic supporting plate along track level
The liter that mobile horizontal drive apparatus, the expanding device on column and driving expanding device are moved up and down along column
What falling unit collectively formed, the expanding device be by mounted on column rolling pedestal (15), be mounted on rolling
In pedestal and rotation axis stretches out what the bistrique (17) of the flaring motor (16) and setting of rolling pedestal on the rotating shaft collectively constituted,
The bowl structure of through-hole is provided with centered on the bistrique.
The position-limit mechanism be that by rack-mounted rotation axis (18) and limit on the rotating shaft is fixedly mounted
Cover what (19) two parts were constituted.
The carriage mechanism is supporting roller base (20) by being fixed on the rack and a pair on supporting roller base is anti-skidding drags
Take turns what (21) two parts were constituted.
The horizontal drive apparatus is by horizontal motor (22) and the drive connection by speed reducer and horizontal motor and drive
What horizontal roller screw (23) two parts of dynamic electronic pallets level movement were constituted.
The lifting gear be by mounted on column top lifting motor (24) and in column and pass through deceleration
Machine is sequentially connected with lifting motor and the vertical roller screw (25) of rolling pedestal lifting is driven to collectively form.
It is provided with bistrique in the rotation axis of the flaring motor (16), the bistrique is socketed in expansion by the through-hole at its center
In the rotation axis of mouth motor, it is designed with keyway on the inner surface of the through-hole and outer surface of rotation axis and is formed by square key
Synchronized links.
The spigot-and-socket steel pipe and its processing method made using technical scheme of the present invention, greatly improves spigot-and-socket steel
The quality and practical performance of the connector of pipe, improve production efficiency, reduce production cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of spigot-and-socket steel pipe of the present invention;
Fig. 2 is the structural schematic diagram of rolling pipe-expanding machine of the present invention;
In figure, 1, steel pipe;2, faucet part;3, socket;4, the first arc transition section;5, short tube load section;6, the second circle
Arc changeover portion;7, short tube seal section;8, ring baffle;9, locating slot;10, chamfering or closing in;11, rack;12, track;13, electric
Dynamic supporting plate;14, column;15, pedestal is rolled;16, it is flared motor;17, bistrique;18, rotation axis;19, limited cover;20, supporting roller base;
21, anti-skidding tugboat;22, horizontal motor;23, horizontal roller screw;24, lifting motor;25, vertical roller screw.
Specific implementation mode
The present invention is specifically described below in conjunction with the accompanying drawings, as shown in Figs. 1-2, a kind of spigot-and-socket steel pipe, including steel pipe
(1), one end port of the steel pipe is faucet part (2), and the other end port of the steel pipe is socket (3), the faucet part
It is machined with the first arc transition section (4), short tube load section (5), the second circular arc transition (6), short tube sealing successively from the inside to the outside
Section (7) and the ring baffle (8) at faucet part port is machined with locating slot, the locating slot on the short tube seal section
It is inside welded with locating ring (9), chamfering is equipped at the port of the socket or closes up (10).Wherein, the locating slot (7) is vertical cuts
Face is the toroidal cavity structure for bending font.
A kind of processing method of spigot-and-socket steel pipe described in claim 1, this method comprises the following steps:
Steel pipe to be processed is placed in the carriage mechanism of rolling pipe-expanding machine by step 1 first, and the socket of steel pipe is fixed
On the position-limit mechanism of rolling flaring machine tail end, then faucet part adjusts rolling flaring against the flaring structure of rolling pipe-expanding machine
Machine makes the flaring mechanism of rolling pipe-expanding machine be moved to operating position, so opens power supply, and the first circle is first rolled out by flaring mechanism
Then arc transition and short tube load section control flaring mechanism and retreat, readjust flaring mechanism in the first circular arc transition and
The second circular arc transition of place and short tube seal section are rolled in the contact of short tube load section again;
Steel pipe after being processed in step 1 is placed in the carriage mechanism of flange film laminator, and makes holding for steel pipe by step 2
Oral area nozzle is placed in the lower die of flange film laminator, is risen the anti-shake support roller of flange film laminator to hold steel pipe, is then started electricity
Machine, by the cooperation of the upper and lower mould of flange film laminator, the short tube seal section in steel pipe faucet part nozzle and nozzle end difference
Process locating slot and ring baffle;
The socket nozzle end of steel pipe after being processed in step 2 is carried out chamfered edge or shell nosing treatment, obtained by step 3
Spigot-and-socket coupling finished product.
The flaring mechanism is track (12), the electronic supporting plate of installation in orbit by being arranged in rack (11)
(13), the column (14) that is fixed on electronic splint upper surface in rack and drives electronic supporting plate along track level
The liter that mobile horizontal drive apparatus, the expanding device on column and driving expanding device are moved up and down along column
What falling unit collectively formed, the expanding device be by mounted on column rolling pedestal (15), be mounted on rolling
In pedestal and rotation axis stretches out what the bistrique (17) of the flaring motor (16) and setting of rolling pedestal on the rotating shaft collectively constituted,
The bowl structure of through-hole is provided with centered on the bistrique;The position-limit mechanism be by rack-mounted rotation axis (18) and
It is fixedly mounted what limited cover (19) two parts on the rotating shaft were constituted;The carriage mechanism is the support roller by being fixed on the rack
What seat (20) and anti-skidding tugboat (21) two parts of a pair on supporting roller base were constituted;The horizontal drive apparatus is by level
Motor (22) and by the drive connection of speed reducer and horizontal motor and drive the horizontal roller screw of electronic pallets level movement
(23) two parts are constituted;The lifting gear be by mounted on column top lifting motor (24) and in the column and
It is sequentially connected by speed reducer and lifting motor and the vertical roller screw (25) of rolling pedestal lifting is driven to collectively form;Institute
It states and is provided with bistrique in the rotation axis of flaring motor (16), the bistrique is socketed in turning for flaring motor by the through-hole at its center
On moving axis, it is designed with keyway on the inner surface of the through-hole and outer surface of rotation axis and synchronized links is formed by square key.
In the technical scheme, steel pipe to be processed is placed on the anti-skidding bracket wheel of carrier structure by staff, so
The position-arresting disk limited on tailstock is fixedly connected manually with one end of steel pipe afterwards, completes preparation.Then start control host,
Control host computer control flaring mechanism carries out flaring action to port of steel pipe.Its action includes:Horizontal motor passes through speed reducer first
Electronic supporting plate action is driven with roller screw, by entire flaring structure horizontal movement to Working position, then stopping acts;Its
It is secondary, start lifting gear, lifting motor drives ball-screw to be elevated to specified altitude assignment by pedestal is rolled by speed reducer;Finally,
Start flaring motor, flaring motor via reducer driving bistrique carries out flaring action to the port of steel pipe.The flaring action
It is to be rotated to squeeze into port of steel pipe in such a way that its side surface is slightly below port of steel pipe lower edge by bistrique, to reach port of steel pipe
Flaring purpose, the inner wall of the arcuate flanks of the bistrique and port of steel pipe, which is formed, to be interference fitted, and the bistrique is in flaring motor
It drives lower rotation and is advanced slowly under the driving of horizontal motor and squeeze into port of steel pipe, bistrique drives steel pipe together in the process
Rotate and slowly squeeze into port of steel pipe, to achieve the purpose that port of steel pipe flaring, the horizontal displacement of the electronic supporting plate and
The height of lifting gear lifting carries out all in accordance with control host computer control.
In the technical scheme, the turning over all over molding press of seamless steel pipe, the flange press mold can be used in the flange film laminator
The upper die and lower die of machine are all cylinder, and the shape of its side surface and the shape of faucet part locating slot match.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of which part may be made, belongs to the scope of protection of the present invention it
It is interior.