CN116727508A

CN116727508A - S-shaped corrugated pipe forming device and process method

Info

Publication number: CN116727508A
Application number: CN202310698291.5A
Authority: CN
Inventors: 张鹏; 王世杰; 陈爱祥; 邵长磊; 刘刚; 艾卫江
Original assignee: Nanjing Zhixing Pipe Industry Co ltd; Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Current assignee: Nanjing Zhixing Pipe Industry Co ltd; Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-09-12

Abstract

The application relates to an S-shaped corrugated pipe forming device and a process method, and relates to the field of corrugated pipe production technology. The hydraulic cylinder is characterized by comprising a machine body, wherein a first positioning rod is fixedly arranged in the machine body, a sliding rod is arranged in the machine body in a sliding manner, a second positioning rod is arranged on the sliding rod and used for positioning a metal cylinder body, convex rings used for the metal cylinder body to abut against are arranged on the first positioning rod and the second positioning rod, a first hydraulic cylinder used for controlling the sliding rod to move is arranged on the machine body, and an oil guide port used for communicating a pump station is formed in the first positioning rod; limiting hoops for limiting the expansion of the end parts of the metal cylinders are arranged in the machine body corresponding to the first positioning rod and the second positioning rod, a plurality of forming hoops for sleeving the metal cylinders are arranged in the machine body at intervals between the two limiting hoops, and the expansion of the metal cylinders is limited. The application can conveniently produce corrugated pipes with corrugated middle positions and straight cylinder type ends.

Description

S-shaped corrugated pipe forming device and process method

Technical Field

The application relates to the technical field of corrugated pipe production, in particular to an S-shaped corrugated pipe forming device and a process method.

Background

The metal corrugated pipe is a pipe with a shape like a regular wave. The device is mainly used for non-concentric axial transmission with small bending radius, irregular turning and expansion, absorption of thermal deformation of the pipeline and the like, or connection of the pipeline and the pipeline in the occasion of inconvenient installation by using a fixed elbow, or connection of the pipeline and equipment.

At present, a metal cylinder body for manufacturing the corrugated pipe is sleeved on a die, then the metal cylinder body moves circumferentially on the surface of the metal cylinder body through a rolling wheel, and the surface of the metal cylinder body is rolled, so that a circle of grooves are formed on the surface of the metal cylinder body, and the surface of the metal cylinder body gradually forms a wavy shape. The corrugated pipe is produced by the mode, the corrugated pipe can be formed only by repeatedly pressing the surface of the metal cylinder, the rolling wheel repeatedly rolls the metal cylinder, the corrugated pipe is suitable for continuous production, an operator cuts the whole continuous corrugated pipe to form a required finished corrugated pipe, and the whole corrugated pipe of the finished corrugated pipe is usually corrugated. However, when producing specific metal bellows, such as a desired bellows, it is difficult to complete the production of the specific metal bellows if the metal cylinder surface is pressed by a rolling wheel only with the intermediate portion being corrugated.

Disclosure of Invention

In order to facilitate the production of corrugated pipes with middle positions and straight cylinder type corrugated pipes at two ends, the application provides an S-shaped corrugated pipe forming device and a process method.

The application provides an S-shaped corrugated pipe forming device which adopts the following technical scheme:

the utility model provides a S-shaped corrugated pipe forming device, includes the organism, the organism internal fixation is provided with first locating lever, the internal sliding of organism is provided with the slide bar, be provided with the second locating lever on the slide bar, first locating lever and second locating lever coaxial setting to be used for the location metal barrel, first locating lever with all be provided with on the second locating lever be used for the bulge loop of metal barrel butt, just first locating lever with all set up on the second locating lever with support the sealing washer of tight metal barrel inner wall, be provided with on the organism and be used for controlling the first pneumatic cylinder that the slide bar removed, set up the oil guide mouth that is used for the intercommunication pump station on the first locating lever;

the machine body is internally provided with limiting hoops which are used for limiting the expansion of the end parts of the metal cylinders and correspond to the first positioning rods and the second positioning rods, and a plurality of forming hoops which are sleeved with the metal cylinders and limit the expansion of the metal cylinders are arranged between the two limiting hoops at intervals.

Through adopting above-mentioned technical scheme, the operator is pegged graft metal barrel in first locating lever, then the operator starts first pneumatic cylinder and drives second locating lever and move towards first locating lever direction to peg graft in the other end of metal barrel, the sealing washer supports tightly on the inner wall of metal barrel. Then the operator presses the limit hoops on the end parts of the metal cylinders to limit the expansion of the limit hoops, and then the forming hoops are hooped on the metal cylinders. The operator starts the pump station and annotates liquid in the metal cylinder through leading the hydraulic fluid port for the metal cylinder does not take place to expand by the position that shaping hoop and spacing hoop were hooped up, after annotating the liquid pressurization repeatedly, the metal cylinder expansion reaches the anticipated degree, then the operator starts the pump station and withdraws liquid in the metal cylinder, the operator removes each shaping hoop and spacing hoop again to the effect of hooping of metal cylinder, the operator starts first pneumatic cylinder and promotes the second locating lever and remove towards first locating lever, extrude the metal cylinder expansion position into the wave form, the pneumatic cylinder drives the second locating lever and resets after accomplishing the extrusion, the operator is unloading to fashioned bellows. The two ends of the finished corrugated pipe are straight cylinders, and the middle section is wavy.

Optionally, be provided with the guide post in the organism, spacing hoop with shaping hoop structure is the same, spacing hoop with shaping hoop is all including sliding the cover and is located two hoop boards on the guide post, two the hoop board is about the guide post is articulated, two all offer the holding tank that is used for holding the metal barrel on the hoop board, be provided with in the organism and be used for controlling spacing hoop with shaping hoop closes or opens the control assembly simultaneously, and each all can be dismantled in the both sides of hoop board and be provided with the backing plate, the bulge loop can promote each hoop board along guide post axial displacement.

Through adopting above-mentioned technical scheme, the second locating lever moves towards first locating lever direction for two bulge loops are close to each other, and then promote the hoop board of two spacing hoops to remove in opposite directions along the axis of guide post, and press from both sides the hoop board that tight backing plate and shaping hoop correspond, realize each spacing hoop and shaping hoop fixed in position on the guide post, make the operator need not to adjust the position of each spacing hoop and shaping hoop, improve operating efficiency.

Optionally, the control assembly include articulated in two roll-over frames on the guide post, two of mutual articulated hoop board is located the difference in the roll-over frame, two all fixedly connected with control lever on the roll-over frame, the control lever runs through each of correspondence hoop board, be provided with on the organism and be used for promoting two the control unit of the reverse upset of roll-over frame.

Through adopting above-mentioned technical scheme, operator drive control unit drives two roll-over frames reverse upset, and then drives spacing hoop and shaping hoop and opens or close simultaneously, further improves operating efficiency.

Optionally, the control unit includes fixed connection in the second pneumatic cylinder on the organism, fixedly connected with push pedal on the piston rod of second pneumatic cylinder, the push pedal is located in the organism, correspond two on the push pedal the roll-over stand position all articulates there is the connecting rod, the connecting rod articulate in on the roll-over stand.

Through adopting above-mentioned technical scheme, the operator starts the second pneumatic cylinder and drives the push pedal and remove, and the push pedal removes and drives the connecting rod and stimulate the roll-over stand upset for two roll-over stands are close to each other or keep away from each other, and then control spacing hoop and shaping hoop open or close simultaneously.

Optionally, each hoop board is last all fixedly connected with locking board, and two of mutual articulated hoop board is when closing, two locking board intercrosses and forms the locking groove, it is provided with the bin gate to slide on the organism, fixedly connected with is used for inserting each on the bin gate inner wall locking lever in the locking groove.

Through adopting above-mentioned technical scheme, when two hoop boards of mutual articulated are closed, two locking plates alternately set up to form the locking groove, the operator is through removing the door of storehouse, make each dead lever on the door of storehouse all insert in the locking plate, and then restrict two hoop boards of mutual articulated and open, be favorable to improving the stability when two hoop boards hoop the metal barrel, reduce metal barrel inner wall pressure increase, the circumstances of pushing up mutually articulated hoop board.

Optionally, fixedly connected with guide arm in the roll-over stand, just the axial of guide arm with the axial of control lever is parallel, fixedly connected with spacing seat on the backing plate, just spacing seat with the backing plate forms and is used for supplying the elongated slot that the guide arm pegged graft, the backing plate has been seted up and is used for supplying the spacing groove of guide arm joint, articulated on the backing plate have be used for the shutoff limiting plate in spacing groove, fixedly connected with gag lever post on the limiting plate, fixedly connected with extension board on the backing plate, offer on the extension board and be used for supplying the slot that the gag lever post pegged graft, the opening of elongated slot deviates from the slot setting, slide on the limiting plate and be provided with the sleeve, offer on the extension board and be used for supplying the through-hole that the sleeve pegged graft, be provided with on the gag lever post and be used for promoting the sleeve orientation the spring that the extension board removed.

Through adopting above-mentioned technical scheme, the operator with the elongated slot joint on the limiting plate on the guide arm, the operator overturns the backing plate for the limiting groove joint on the backing plate is on the control rod, then through the limiting plate that overturns, with the control rod restriction in the limiting groove, at the in-process of upset limiting plate, the limiting rod is pegged graft in the slot, the spring promotes the sleeve, make the sleeve peg graft in the through-hole, realize limiting rod's position definition in the slot, prevent the limiting plate upset, realize that the backing plate can dismantle the installation on control rod and guide arm.

Optionally, the handle is articulated on the gag lever post, fixedly connected with branch on the handle, just articulated on the branch has the connecting rod, the connecting rod with the sleeve articulates.

Through adopting above-mentioned technical scheme, the sleeve removes towards limiting plate direction under the elasticity effect of spring, and branch and connecting rod are in the open state this moment, and the operator passes through tilting handle, drives branch and deviates from the upset of guide arm direction for branch and connecting rod are folding each other, and then drive the sleeve and overcome spring elasticity effect and remove towards keeping away from limiting plate direction, make things convenient for the operator to insert the sleeve or take out the through-hole.

Optionally, the jack has been seted up on the backing plate, backing plate one side is provided with the cushion, fixedly connected with on the cushion is used for inserting stand in the jack, backing plate deviates from one side of stand has also been seted up and is used for supplying the jack that the stand pegged graft, fixedly connected with is used for supporting tightly on the outer wall of stand the elastic pad of jack inner wall.

By adopting the technical scheme, an operator changes the distance between two adjacent forming hoops by changing the number of the inserting blocks so as to adapt to more corrugated pipes with different specifications.

A shaping technological method of S-shaped corrugated pipe comprises the following steps:

s1, rolling a metal plate into a cylinder shape, and welding at an interface position to prepare three cylinders with different diameters; s2, mutually sleeving three cylinders with different diameters to form a metal cylinder body with a three-layer structure, wherein the three cylinders with different diameters are in interference fit with each other, and welding seams of the three cylinders are staggered; s3, sleeving the metal cylinder body on the first positioning rod and the second positioning rod, closing the limiting hoop and the forming hoop, hooping the metal cylinder body, and adjusting the interval between the limiting hoop and the forming hoop and the interval between adjacent forming hoops; s4, the pump station injects hydraulic oil into the metal cylinder through an oil guide port on the first positioning rod, so that the position of the metal cylinder, which is not clamped, is expanded; s5, after opening each limit hoop and forming hoop, controlling the second positioning rod to move towards the first positioning rod and extruding the metal cylinder body so as to form the corrugated pipe; s6, controlling the second positioning rod to be far away from the first positioning rod, and blanking the formed corrugated pipe.

By adopting the technical scheme, the three cylinders are mutually sleeved, so that the formed corrugated pipe has better structural stability and prolonged service life. The welding seams of the three cylinders are arranged in a staggered mode, and the situation that the welding positions are broken in the expansion forming process of the corrugated pipe is reduced. The metal cylinder body is sleeved between the first positioning rod and the second positioning rod, the limiting hoops and the forming hoops are hooped on the outer wall of the metal cylinder body, then an operator injects hydraulic oil into the metal cylinder body to enable the metal cylinder body to expand at the position where the metal cylinder body is not hooped by the limiting hoops and the forming hoops, the expanded metal cylinder body is wavy, finally, each limiting hoop and the forming hoops are opened, the second positioning rod is controlled to move towards the first positioning rod, the expanded metal cylinder body is enabled to be axially compressed, and the operator completes manufacturing of the corrugated pipe with the compressed metal cylinder body. The two ends of the finished corrugated pipe are cylindrical, and the middle section is wavy.

In summary, the present application includes at least one of the following beneficial technical effects: the metal cylinder body is sleeved between the first positioning rod and the second positioning rod, two ends of the metal cylinder body are hooped through the limiting hoops, the middle section of the metal cylinder body is hooped through the forming hoops, gaps are reserved between the adjacent forming hoops, gaps are reserved between the forming hoops and the limiting hoops, the metal cylinder body is injected with injection liquid through the pump station to pressurize, the metal cylinder body is expanded outwards at the position where the metal cylinder body is not hooped, the two ends of the metal cylinder body are compressed after the metal cylinder body is expanded, the corrugated sections are formed, and therefore the corrugated pipe with the corrugated middle position is convenient to produce, and the two ends of the corrugated pipe are in a straight cylinder shape.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic structural view of an embodiment of the present application for embodying a second positioning rod.

Fig. 3 is a schematic structural diagram of an oil guide port according to an embodiment of the present application.

FIG. 4 is a cross-sectional view of an embodiment of the present application for embodying a control assembly.

Fig. 5 is a schematic view of a structure for embodying the pad according to the embodiment of the present application.

Fig. 6 is a schematic structural view of a support plate according to an embodiment of the present application.

Fig. 7 is an enlarged schematic view of the portion a in fig. 6.

Fig. 8 is a schematic structural view of an embodiment of the present application for embodying a column.

Reference numerals illustrate: 1. a body; 11. a cavity; 12. a bin opening; 13. a bin gate; 14. a threaded hole; 15. a screw; 16. turning over the rod; 17. a first positioning rod; 2. a slide bar; 21. a second positioning rod; 22. a first hydraulic cylinder; 23. a seal ring; 24. a convex ring; 25. a connecting nozzle; 26. an oil guide port; 3. a guide post; 31. a limit hoop; 32. forming a hoop; 33. a hoop plate; 34. a receiving groove; 4. a control assembly; 41. a roll-over stand; 42. a support rod; 43. a notch; 44. a control lever; 45. a guide rod; 5. a control unit; 51. a second hydraulic cylinder; 52. a push plate; 53. a connecting rod; 6. a locking plate; 61. a locking groove; 62. a locking lever; 7. a backing plate; 71. a limit seat; 72. a long groove; 73. a limit groove; 74. a limiting plate; 8. a support plate; 81. a slot; 82. a through hole; 83. a limit rod; 84. a sleeve; 85. an end plate; 86. a spring; 87. a handle; 88. a support rod; 89. a connecting rod; 9. a cushion block; 91. a jack; 92. a column; 93. an elastic pad.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

The embodiment of the application discloses an S-shaped corrugated pipe forming device. As shown in fig. 1 and 2, the s-shaped bellows forming device comprises a long cylindrical body 1, a cavity 11 is arranged in the body 1, a bin opening 12 communicated with the cavity 11 is formed in one side of the body 1 along the width direction of the body 1, and a bin gate 13 for blocking the bin opening 12 is slidably arranged at the position of the body 1 corresponding to the bin opening 12. The screw hole 14 has been seted up to the one end of organism 1 self length direction, and the axial of screw hole 14 is parallel with the length direction of organism 1, and screw hole 14 internal thread is connected with screw rod 15, and the one end that screw rod 15 stretches out the organism 1 articulates has the turnover rod 16, and the articulated axis of turnover rod 16 on screw rod 15 is perpendicular with the axis of screw rod 15. One end of the screw rod 15 inserted into the machine body 1 is coaxially and rotatably connected with a cylindrical first positioning rod 17, the machine body 1 is provided with a sliding rod 2 in the cavity 11 in a sliding manner along the length direction of the machine body, one end of the machine body 1 far away from the first positioning rod 17 is fixedly connected with a first hydraulic cylinder 22, and a piston rod of the first hydraulic cylinder 22 penetrates through the machine body 1 and is fixedly connected with the sliding rod 2. The second positioning rod 21 is fixedly connected to one side of the sliding rod 2 facing the first positioning rod 17, and the first positioning rod 17 and the second positioning rod 21 are coaxially arranged.

As shown in fig. 2 and 3, the first positioning rod 17 and the second positioning rod 21 are both used for being inserted into the end part of the metal cylinder and positioning the metal cylinder, and a plurality of sealing rings 23 used for abutting against the inner wall of the metal cylinder are sleeved on the circumferential surfaces of the first positioning rod 17 and the second positioning rod 21. And the first positioning rod 17 and the second positioning rod 21 are fixedly connected with a convex ring 24 which is used for abutting against the metal cylinder end plate 85 in a coaxial manner. The convex ring 24 corresponding to the first positioning rod 17 is provided with a connecting nozzle 25 for connecting with a pump station, and the first positioning rod 17 is provided with an oil guide port 26 for communicating with the connecting nozzle 25 along the axial direction of the first positioning rod 17.

As shown in fig. 2 and 4, the machine body 1 is fixedly connected with a cylindrical guide post 3 in the cavity 11, and the length direction of the guide post 3 is parallel to the length direction of the machine body 1. The guide post 3 is provided with a limiting hoop 31 for hooping the end part of the metal cylinder in a sliding manner corresponding to the positions of the first positioning rod 17 and the second positioning rod 21, and the guide post 3 is provided with a forming hoop 32 for hooping the middle section of the metal cylinder in a sliding manner at intervals between the two limiting hoops 31. The spacing clip 31 and the forming clip 32 are identical in structure, the spacing clip 31 includes two clip plates 33 slidably disposed on the guide rod, the two clip plates 33 are hinged to each other, and the hinge axes of the two clip plates 33 are collinear with the axis of the guide rod. The collar 24 can abut against the corresponding spacing clip 31, so that the two spacing clips 31 come close to each other when the second positioning rod 21 moves toward the first positioning rod 17. Two sides of each formed hoop 32 are provided with backing plates 7, the backing plates 7 being used to space adjacent two hoop plates 33 apart. The opposite surfaces of the two mutually hinged hoop plates 33 are respectively provided with a semicircular accommodating groove 34 for accommodating the metal cylinder, and when the two mutually hinged hoop plates 33 are closed, the two semicircular accommodating grooves 34 are spliced into a circular hole.

The machine body 1 is provided with a control assembly 4 in the cavity 11 for controlling the opening or closing of each spacing hoop 31 and forming hoop 32, the control assembly 4 comprises two roll-over frames 41 arranged in the cavity 11, the two roll-over frames 41 are both hinged on the guide post 3, and the two roll-over frames 41 are symmetrically arranged about the guide post 3. The machine body 1 is fixedly connected with a supporting rod 42 between two turnover frames 41, and notches 43 for clamping the supporting rod 42 are formed in the two turnover frames 41. A control rod 44 and a guide rod 45 are fixedly connected in the two roll-over frames 41, and the axial directions of the control rod 44 and the guide rod 45 are parallel to the axial direction of the guide column 3. The two hoop plates 33 hinged to each other are located in different roll-over frames 41, and both control rods 44 are slidably provided on the corresponding hoop plates 33. And the side of the machine body 1 away from the bin opening 12 is provided with a control unit 5 for controlling the two turnover frames 41 to reversely turn over, the control unit 5 comprises a second hydraulic cylinder 51 fixedly connected to the side of the machine body 1 away from the bin opening 12, and a piston rod of the second hydraulic cylinder 51 penetrates through and stretches into the machine body 1. The end of the piston rod of the second hydraulic cylinder 51 extending into the machine body 1 is fixedly connected with a push plate 52, the positions of the push plate 52 corresponding to the two roll-over frames 41 are hinged with connecting rods 53, and the ends of the two connecting rods 53 far away from the push plate 52 are hinged on the roll-over frames 41.

The operator starts the second electric cylinder to drive the push plate 52 to move, and drives the two turnover frames 41 to turn over in opposite directions under the pushing action of the connecting rod 53, so that the notches 43 of the two turnover frames 41 are clamped on the supporting rod 42. In the process of approaching the two roll-over frames 41, the two control rods 44 drive the corresponding hoop plates 33 to roll over around the guide posts 3, so that the limit hoops 31 and the forming hoops 32 are closed at the same time. When the two roll-over frames 41 are turned back to back, the limit bands 31 and the forming bands 32 are driven to be opened simultaneously.

Each of the clip plates 33 is fixedly connected with a locking plate 6, and when the two clip plates 33 hinged to each other are turned over to be closed in opposite directions, the locking plates 6 are staggered to each other and form locking grooves 61, and when the spacing clip 31 and the forming clip 32 are simultaneously closed, each locking groove 61 is aligned along the length direction of the machine body 1. The side of the bin gate 13 facing the inside of the machine body 1 is fixedly connected with a locking rod 62, and the axial direction of the locking rod 62 is parallel to the length direction of the machine body 1. The operator can insert the lock bars 62 into the respective lock grooves 61 by moving the door 13. The locking rods 62 are engaged in the locking grooves 61 to restrict the turning of the respective hoop plates 33.

As shown in fig. 5 and 6, the backing plate 7 is a rectangular plate, one end of the backing plate 7 is fixedly connected with an L-shaped limiting seat 71, and a long groove 72 for clamping the guide rod 45 is formed between the limiting seat 71 and the backing plate 7. The backing plate 7 is also provided with a limiting groove 73 for inserting the control rod 44, and the notch of the long groove 72 is far away from the limiting groove 73.

As shown in fig. 6 and 7, a limiting plate 74 for clamping the control rod 44 in the limiting groove 73 is hinged between the guide rod 45 and the control rod 44, a support plate 8 is fixedly connected to the support plate 7, a slot 81 is formed in the support plate 8, and one side of the slot 81 away from the support plate 7 is opened. The limiting plate 74 is fixedly connected with a limiting rod 83 which is inserted into the slot 81, the limiting rod 83 is slidably provided with a sleeve 84, the support plate 8 is provided with a through hole 82 for inserting the sleeve 84, and the sleeve 84 is away from the limiting plate 74 and fixedly connected with an end plate 85 for abutting the support plate 8. The end of the limiting rod 83 far away from the limiting plate 74 is hinged with a handle 87, a spring 86 is sleeved on the limiting rod 83 between the end plate 85 and the handle 87, and the spring 86 pushes the end plate 85 to enable the sleeve 84 to move towards the limiting plate 74. The handle 87 is fixedly connected with a supporting rod 88 towards one end of the sleeve 84, a connecting rod 89 is hinged to the supporting rod 88, and one end, away from the handle 87, of the connecting rod 89 is hinged to the sleeve 84.

The operator drives the support plate 8 to turn over in the direction away from the limit rod 83 through the turning handle 87, and then drives the connecting rod 89 to turn over, so that the sleeve 84 overcomes the elastic force of the spring 86 and moves towards the handle 87. The operator clamps the long groove 72 of the backing plate 7 on the guide rod 45, then the operator overturns the backing plate 7 to clamp the limiting groove 73 on the backing plate 7 with the control rod 44, finally the operator overturns the limiting plate 74 to enable the limiting rod 83 to be inserted into the slot 81, and the operator releases the handle 87 to enable the sleeve 84 to move towards the support plate 8 under the elastic action of the spring 86 and to be inserted into the through hole 82, so that the limiting plate 74 is fixed at the position of the backing plate 7, and then the backing plate 7 can be detachably arranged on the guide rod 45 and the control rod 44.

As shown in fig. 6 and 8, a cushion block 9 is arranged on one side of the cushion plate 7, a jack 91 is arranged on one side of the cushion plate 7 facing the cushion block 9, a stand column 92 used for being inserted into the jack 91 is fixedly connected to the cushion block 9, a jack 91 used for being inserted into the stand column 92 is arranged on one side of the cushion block 9 facing away from the stand column 92, and an elastic cushion 93 used for being abutted against the inner wall of the jack 91 is sleeved on the stand column 92. The operator adjusts the interval between the backing plate 7 and the cushion blocks 9 by adjusting the number of the cushion blocks 9, so that the operator adjusts the interval between the two adjacent hoop plates 33.

The implementation principle of the embodiment of the application is as follows: before the bellows is made, the operator installs the spacer 9 between the adjacent two hoop plates 33. The operator inserts the metal cylinder body on the first positioning rod 17, then the operator starts the first hydraulic cylinder 22 to drive the sliding seat to push the second positioning rod 21 to move towards the direction of the first positioning rod 17, and inserts the metal cylinder body in the metal cylinder body, so that two ends of the metal cylinder body are abutted against corresponding convex rings 24. In the process that the two convex rings 24 are close to each other, the convex rings 24 push the two limiting hoops 31 to be close to each other, and the two limiting hoops 31 clamp the middle forming hoops 32 and the backing plate 7, so that the position of each limiting hoop 31 and the position of each limiting hoop 31 along the length direction of the machine body 1 are fixed. Then the operator starts the second hydraulic cylinder 51 to push the two roll-over frames 41 to approach each other and to be clamped on the supporting rod 42, so that the limit hoop 31 and the limit hoop 31 are both clamped on the outer wall of the metal cylinder. The operator closes the bin door 13 again, so that the locking bars 62 are inserted into the locking grooves 61, and the spacing clips 31 can stably maintain the closed state.

The operator starts the pump station to pressurize the liquid in the metal cylinder, so that the metal cylinder expands outwards corresponding to the position of the backing plate 7, and after multiple pressurization, the operator starts the pump station to pump the liquid in the metal cylinder back. The operator opens the door 13. And the second hydraulic cylinder 51 is started to drive each limit hoop 31 and the limit hoop 31 to be opened, so that the clamping effect of each hoop plate 33 on the metal cylinder is relieved. Finally, the operator starts the first hydraulic cylinder 22 to drive the second positioning rod 21 to move towards the first positioning rod 17, so that the expanded metal cylinder is compressed to form the corrugated pipe.

The embodiment of the application also discloses a process method for forming the S-shaped corrugated pipe. The S-shaped corrugated pipe forming process method comprises the following steps:

and (3) curling the three metal plates with the same length and different widths along the width direction to form three metal cylinders with the same length and different diameters, and welding the joint of the metal cylinders by an operator, wherein the length direction of the welding seam is parallel to the axial direction of the metal cylinders. The three sleeve 84 diameters are respectively denoted as first, second and third from small to large, the second sleeve is inserted into the third sleeve, and the second sleeve is in interference fit with the third sleeve.

And inserting the first cylinder into the second cylinder, and performing interference fit on the first cylinder and the second cylinder to form the metal cylinder with the three-layer structure.

The metal cylinder is placed in the machine body 1, one end of the metal cylinder is inserted into one end of the first positioning rod 17, then an operator drives the sliding rod 2 to move through the first hydraulic cylinder 22, and the sliding rod 2 pushes the second positioning rod 21 to be inserted into the other end of the metal cylinder, so that the metal cylinder is positioned. Then, the operator closes each of the spacing clips 31 and the forming clips 32 so that the spacing clips 31 are tightened on the outer wall of the end part of the metal cylinder, the forming clips 32 are tightened on the middle position of the metal cylinder, and the two sides of each of the forming clips 32 are provided with the backing plates 7 so that gaps exist between adjacent forming clips 32 and between the forming clips 32 and the spacing clips 31.

The operator starts the pump station to boost the pressure towards the liquid injection in the metal cylinder, so that the metal cylinder outwards expands at the position corresponding to the backing plate 7, and the metal cylinder does not expand at the positions of the limiting hoop 31 and the locking hoop, so that the middle section of the metal cylinder is in a wave shape.

After the operator opens the limit hoop 31 and the forming hoop 32, the first hydraulic cylinder 22 is started to drive the second positioning rod 21 to move towards the first positioning rod 17, and the wavy position of the metal cylinder is compressed, so that the corrugated pipe is formed.

After the corrugated pipe is formed, an operator starts the first hydraulic cylinder 22 to drive the second positioning rod 21 to be far away from the first positioning rod 17, and finally the operator discharges the formed corrugated pipe.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. An S-shaped corrugated pipe forming device is characterized in that: the hydraulic cylinder comprises a machine body (1), a first positioning rod (17) is fixedly arranged in the machine body (1), a sliding rod (2) is arranged in the machine body (1) in a sliding manner, a second positioning rod (21) is arranged on the sliding rod (2), the first positioning rod (17) and the second positioning rod (21) are coaxially arranged and are used for positioning a metal cylinder body, convex rings (24) used for the metal cylinder body to abut against are arranged on the first positioning rod (17) and the second positioning rod (21), sealing rings (23) used for abutting against the inner wall of the metal cylinder body are arranged on the first positioning rod (17) and the second positioning rod (21), a first hydraulic cylinder (22) used for controlling the sliding rod (2) to move is arranged on the machine body (1), and an oil guide port (26) used for communicating a pump station is formed in the first positioning rod (17);

limiting hoops (31) for limiting expansion of the end parts of the metal cylinders are arranged in the machine body (1) corresponding to the first positioning rods (17) and the second positioning rods (21), a plurality of forming hoops (32) for sleeving the metal cylinders and limiting expansion of the metal cylinders are arranged in the machine body (1) at intervals between the two limiting hoops (31).

2. An S-shaped bellows molding apparatus as claimed in claim 1, wherein: be provided with guide post (3) in organism (1), spacing hoop (31) with shaping hoop (32) structure is the same, spacing hoop (31) with shaping hoop (32) are all including sliding the cover and are located two hoop boards (33) on guide post (3), two hoop board (33) are about guide post (3) are articulated, two holding tank (34) that are used for holding the metal barrel have all been seted up on hoop board (33), be provided with in organism (1) and be used for control spacing hoop (31) with control assembly (4) that shaping hoop (32) closed or opened simultaneously, and each both sides of hoop board (33) all can be dismantled and be provided with backing plate (7), bulge loop (24) can promote each hoop board (33) along guide post (3) axial displacement.

3. An S-shaped bellows molding apparatus as claimed in claim 2, wherein: the control assembly (4) comprises two overturning frames (41) hinged to the guide column (3), two hoop plates (33) hinged to each other are located in different overturning frames (41), control rods (44) are fixedly connected to the overturning frames (41) respectively, the control rods (44) penetrate through the corresponding hoop plates (33), and a control unit (5) for pushing the two overturning frames (41) to reversely overturn is arranged on the machine body (1).

4. An S-shaped bellows molding apparatus as claimed in claim 3, wherein: the control unit (5) comprises a second hydraulic cylinder (51) fixedly connected to the machine body (1), a push plate (52) is fixedly connected to a piston rod of the second hydraulic cylinder (51), the push plate (52) is located in the machine body (1), connecting rods (53) are hinged to positions, corresponding to the two overturning frames (41), of the push plate (52), and the connecting rods (53) are hinged to the overturning frames (41).

5. An S-shaped bellows molding apparatus as claimed in claim 3, wherein: all fixedly connected with locking board (6) on each hoop board (33), when two hoop boards (33) of mutual articulated are closed, two locking board (6) intercrosses and form locking groove (61), slide on organism (1) and be provided with bin gate (13), fixedly connected with on the inner wall of bin gate (13) is used for inserting each locking lever (62) in locking groove (61).

6. An S-shaped bellows molding apparatus as claimed in claim 3, wherein: the utility model provides a roll-over stand (41) internal fixation has guide arm (45), just the axial of guide arm (45) with the axial of control rod (44) is parallel, fixedly connected with spacing seat (71) on backing plate (7), just spacing seat (71) with backing plate (7) form and are used for supplying elongated slot (72) that guide arm (45) pegged graft, backing plate (7) are offered and are used for supplying spacing groove (73) of guide arm (45) joint, articulated on backing plate (7) have be used for the shutoff limiting plate (74) of spacing groove (73), fixedly connected with gag lever (83) on limiting plate (74), fixedly connected with extension board (8) on backing plate (7), offer on extension board (8) be used for confession slot (81) are pegged graft, slide on spacing lever (83) and are provided with sleeve (84), offer on extension board (8) and be used for supplying sleeve (84) are used for on the extension board (82) spacing sleeve (84) are used for moving on extension board (84).

7. An S-shaped bellows molding apparatus as claimed in claim 6, wherein: the limiting rod (83) is hinged with a handle (87), the handle (87) is fixedly connected with a supporting rod (88), the supporting rod (88) is hinged with a connecting rod (89), and the connecting rod (89) is hinged with the sleeve (84).

8. An S-shaped bellows molding apparatus as claimed in claim 6, wherein: the utility model discloses a plug, including backing plate (7), backing plate (7) are provided with jack (91), backing plate (7) one side is provided with cushion (9), fixedly connected with on cushion (9) is used for inserting stand (92) in jack (91), backing plate (7) deviate from one side of stand (92) also has offered and is used for supplying jack (91) of stand (92) grafting, fixedly connected with is used for supporting tight elastic pad (93) of jack (91) inner wall on the outer wall of stand (92).

9. A shaping technological method of S-shaped corrugated pipe is characterized in that: the method comprises the following steps:

s1, rolling a metal plate into a cylinder shape, and welding at an interface position to prepare three cylinders with different diameters;

s2, mutually sleeving three cylinders with different diameters to form a metal cylinder body with a three-layer structure, wherein the three cylinders with different diameters are in interference fit with each other, and welding seams of the three cylinders are staggered;

s3, sleeving the metal cylinder body on the first positioning rod (17) and the second positioning rod (21), closing the limiting hoop (31) and the forming hoop (32) and hooping the metal cylinder body, and adjusting the interval between the limiting hoop (31) and the forming hoop (32) and the interval between adjacent forming hoops (32);

s4, the pump station injects hydraulic oil into the metal cylinder through an oil guide port (26) on the first positioning rod (17) so that the position of the metal cylinder which is not clamped is expanded;

s5, after opening each limit hoop (31) and forming hoops (32), controlling the second positioning rod (21) to move towards the first positioning rod (17) and press the metal cylinder body so as to form the corrugated pipe;

s6, controlling the second positioning rod (21) to be far away from the first positioning rod (17), and blanking the formed corrugated pipe.