CN216369680U

CN216369680U - Hydraulic support and bending integrated plugging mechanism and forming die

Info

Publication number: CN216369680U
Application number: CN202122707396.1U
Authority: CN
Inventors: 罗荣斌; 胡红; 侯杰
Original assignee: Foshan Yongheng Hydraulic Machinery Co ltd
Current assignee: Foshan Yongheng Hydraulic Machinery Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-26
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses an integrated plugging mechanism and a forming die for hydraulic support bending, wherein the plugging mechanism comprises a plug, the plug comprises a plug body and a plug rod, the plug body is used for plugging the inner wall of a pipe fitting to form a closed cavity and supporting the inner wall of the pipe fitting during bending, the plug rod is used for pushing the plug body to enter the inner cavity of the pipe fitting, and liquid passing mechanisms which are communicated with each other are arranged in the plug body and the plug rod; the front end of the plug rod is connected with the plug body, and the outer walls of the plug rod and the plug body are matched with the inner wall of the pipe fitting; the plug body comprises a front plugging portion, a rear plugging portion and a supporting joint unit portion arranged between the front plugging portion and the rear plugging portion, the supporting joint unit portion comprises a plurality of supporting joint units, and the supporting joint units are connected through spherical joints. The plugging mechanism is simple in structure, the operation process of the pipe bending is simpler and more convenient, and the production efficiency is higher.

Description

Hydraulic support and bending integrated plugging mechanism and forming die

Technical Field

The utility model relates to machining equipment, in particular to an integrated plugging mechanism for hydraulic support bending and a forming die.

Background

In the pipe bending forming process, the clamping block drives the pipe and the bending die to synchronously rotate, the pipe slides over a bending tangent point under the action of the tension of the clamping block and is subjected to bending deformation under the action of bending moment of a bending plane and is contacted with the bending die, so that a preset bending radius of the pipe fitting is formed, and the bending moment of the pipe is generated by the combined force of the tension of the clamping block on the pipe and the friction force between the pipe dies. In the pipe bending process, in order to prevent the pipe from wrinkling and the defect that the cross section is in flat poles excessively, a metal core mould with a plurality of ball heads needs to be arranged in a pipe cavity so as to realize the supporting (inner supporting) function of the inner cavity of the pipe. When the traditional metal core mould is used for producing the bent pipe, for the pipe fitting with small bending radius, the pipe fitting is easy to wrinkle due to the limitation of the rotation range of the metal core mould, so that the production cost is increased; in the pipe bending process, the contact between the core mold and the inner wall of the pipe is uneven, the inner cavity of the pipe is seriously scratched, and the forming quality is difficult to control.

In order to solve the problems, the utility model with the publication number of CN 103286173A discloses a pipe bending internal pressure supporting device, which comprises a hollow cylindrical rubber bag, wherein one end of the rubber bag is provided with a through hole, and the other end of the rubber bag is closed; the pushing mechanism is pushed against the outer side of the closed end of the rubber bag; the transfusion and pressurization mechanism comprises a pressurization cylinder with a piston rod and a sealing assembly, wherein the sealing assembly is clamped on one side of the rubber bag with the through hole in a sealing mode, a liquid flow channel which axially penetrates through the inner cavity of the rubber bag is formed in the center of the sealing assembly, the pressurization cylinder is connected with the liquid flow channel in a sealing mode through a cylindrical connecting body, and the piston rod extends into the liquid flow channel through the cylindrical connecting body; when the piston rod is retracted, the pressurizing cylinder conveys liquid medium to the inner cavity of the rubber bag through the liquid flow channel; when the rubber bag and the liquid flow channel are filled with the liquid medium, the piston rod extends forwards, and the liquid medium in the liquid flow channel is pushed by the piston rod, so that the liquid medium in the rubber bag is pressurized to drive the rubber bag to expand along the radial direction. According to the pipe bending internal pressure supporting device, the liquid-filled rubber bag is used for replacing a traditional metal core mould, so that the deformation coordination between a support inside a pipe cavity and a smaller bending radius can be realized, meanwhile, the liquid-filled internal pressure support can ensure that the rubber bag can realize self-adaptive contact with the uneven inner wall of the pipe, and the wrinkling possibility of the small-bending radius pipe is effectively inhibited; compared with the traditional metal core mold, the liquid-filled rubber bag is soft in texture, and can effectively reduce scratches of the inner cavity of the pipe. However, the pipe bending internal pressure supporting device still has the following problems:

1. the rubber bag structure needs to be added, the complexity of the equipment structure is increased, and the manufacturing cost of the equipment is increased.

2. Every time the molding of a return bend is accomplished, all need carry out the operation of once dismantling seal assembly: the connecting nut is taken down, the liquid medium in the rubber bag is discharged, and the rubber bag is pumped out from the inner cavity of the pipe after being recovered, so that the operation process is complicated, and the efficiency is low.

3. Is not suitable for the winding operation of the continuous bent pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an integrated plugging mechanism for hydraulic support bending, which has the advantages of simple structure, simpler and more convenient pipe bending operation process, higher production efficiency and suitability for continuous bending of pipe fittings.

Another object of the utility model is to provide a forming die for hydraulic support bending.

The technical scheme for solving the technical problems is as follows:

the integral blocking mechanism for hydraulic support bending comprises a plug, wherein the plug comprises a plug body and a plug rod, the plug body is used for blocking the inner wall of a pipe fitting to form a closed cavity and supporting the inner wall of the pipe fitting during bending, the plug rod is used for pushing the plug body to enter an inner cavity of the pipe fitting, and liquid passing mechanisms which are mutually communicated are arranged in the plug body and the plug rod; the front end of the plug rod is connected with the plug body; the plug body comprises a front plugging portion, a rear plugging portion and supporting joint unit portions arranged between the front plugging portion and the rear plugging portion, each supporting joint unit portion comprises a plurality of supporting joint units used for supporting the inner wall of a pipe fitting, the supporting joint units are connected through spherical joints, two adjacent supporting joint units are provided with hydraulic supporting cavities used for containing liquid media to hydraulically support the inner wall of the pipe fitting, and the hydraulic supporting cavities are communicated with a liquid passing mechanism.

The working principle of the hydraulic support bending integrated plugging mechanism is as follows:

when the pipe fitting is subjected to bending operation, firstly, the pipe fitting to be subjected to bending is installed at a correct position; then, operating the plug rod to enable the plug rod to push the plug body to enter the inner cavity of the pipe fitting; then, the plug body is continuously pushed until the plug body reaches the designated position of the inner wall of the pipe fitting, and a closed cavity is formed between the front plugging part and the rear plugging part due to the fact that the plug body is matched with the inner wall of the pipe fitting; next, starting the liquid supply device, conveying pressure liquid to the liquid passing mechanism, and communicating the liquid passing mechanism with a closed cavity in the pipe fitting so as to introduce the pressure liquid into an inner cavity of the pipe fitting, specifically into a hydraulic support cavity between two adjacent support joint units; next, the bending mechanism acts to perform bending operation on the pipe fitting, at the moment, the supporting joint unit part consists of a plurality of supporting joint units, and the supporting joint units are connected through spherical joints, so that each supporting joint unit can rotate mutually, when the pipe fitting is driven to be bent by the bending machine, the plug body positioned in the pipe fitting can be bent and deformed, and each supporting joint unit and the liquid medium positioned in the hydraulic supporting cavity play a role in supporting the inner wall of the pipe fitting, so that the pipe fitting is prevented from wrinkling and collapsing in the bending process, and one-time bending is completed; finally, for the pipe fitting with only a single elbow, the plug body is pulled out of the pipe fitting backwards through the plug rod, and then the bent pipe fitting is taken down, so that the winding processing of the pipe fitting is completed; for the pipe fitting needing continuous bending, the plug body is pulled backwards through the plug rod to be separated from the bent part of the pipe fitting, so that the plug body is located at the next part to be bent in the pipe fitting, then the second bending action is repeated until all bending operations of one pipe fitting are completed, and then the plug is taken out of the pipe fitting, so that continuous bending is realized.

According to a preferable scheme of the utility model, the supporting joint unit comprises a joint part and a clamping sleeve sleeved on the joint part, and the outer diameter of the clamping sleeve is matched with the inner diameter of the pipe fitting; the joint part comprises a joint body, a spherical groove arranged in the front end of the joint body and a spherical connector arranged at the rear end of the joint body; when two adjacent supporting joint units are connected, the spherical connecting body of one joint part is matched with the spherical groove of the other joint part.

Preferably, the outer wall of the front end of the joint body is provided with an annular step, and the clamping sleeve comprises a sleeving part matched with the outer wall of the joint body and a clamping part matched with the annular step; the gap between two adjacent joint parts is smaller than the width of the clamping sleeve.

In a preferred embodiment of the present invention, the joint portion includes two symmetrically disposed half joint portions, and a gap is formed between the two half joint portions, and the gap communicates the hydraulic support cavity with the fluid mechanism.

According to a preferred scheme of the utility model, the front plugging part comprises a plugging head and a front sealing ring sleeved on the plugging head; the outer diameter of the front sealing ring is matched with the inner diameter of the pipe fitting, and the plugging head is connected to the supporting joint unit part through a spherical joint.

Preferably, the plugging head comprises a plugging head body, an annular bulge arranged at the front end of the plugging head body and a spherical connecting body arranged at the rear end of the plugging head body; the spherical connecting body is matched with the spherical groove of the foremost supporting joint unit; the outer diameter of the plugging head body is matched with the inner diameter of the front sealing ring.

According to a preferable scheme of the utility model, the rear plugging part comprises a plugging column and a rear sealing ring sleeved on the plugging column, and the outer diameter of the rear sealing ring is matched with the inner diameter of the pipe fitting; the plugging column is sleeved at the front end of the plugging rod, the front end of the plugging column protrudes out of the front end of the plugging rod, so that an installation section is formed, and the rear sealing ring is sleeved on the installation section; and a spherical groove matched with the spherical connector of the support joint unit is arranged in the front end of the plugging column.

In a preferred embodiment of the present invention, the plugging column includes two symmetrically disposed half plugging columns.

Preferably, the plugging column is connected with the plug rod through a connecting structure, and the connecting structure comprises a front accommodating hole which is arranged at the front end of the plug rod and used for accommodating the plugging column, a screw counter bore which is arranged at the rear end of the plug rod, a connecting screw and a threaded hole which is arranged at the rear end of the plugging column.

In a preferable scheme of the utility model, the liquid passing mechanism comprises a screw liquid passing hole arranged in the connecting screw, a plugging column liquid passing hole arranged in the plugging column and a joint part liquid passing hole arranged in the joint part; the screw liquid through hole, the plugging column liquid through hole and the joint part liquid through hole are communicated with each other.

A forming die for hydraulic support bending comprises a conduit module for limiting the position of a pipe fitting in the radial direction and a bending module for clamping the pipe fitting to perform bending movement; the pipe bending module comprises a fixed pipe bending mould and a movable pipe bending mould, and the fixed pipe bending mould and the movable pipe bending mould are both provided with pipe bending mould cavities matched with the outer wall of the pipe fitting; the catheter module comprises a catheter fixed die and a catheter movable die; and the guide pipe fixed die and the guide pipe movable die are respectively provided with a guide pipe die cavity matched with the outer wall of the pipe fitting.

In a preferred embodiment of the present invention, the bending pipe fixing die comprises a bending die, and the bending die is provided with a bending die cavity for matching with the pipe fitting; the movable die for bending the pipe comprises a clamping block, a clamping cavity used for being matched with the pipe fitting is formed in the clamping block, and the bending die cavity and the clamping cavity form the die cavity for bending the pipe.

According to a preferable scheme of the utility model, the catheter fixing mold comprises a crease-resistant block, one end of the crease-resistant block is connected with the bending mold, and a catheter fixing cavity for matching with a pipe fitting is arranged on the crease-resistant block; the guide pipe movable die comprises a pressing block, a pressing cavity used for being matched with a pipe fitting is formed in the pressing block, and the guide pipe fixed cavity and the pressing cavity form the guide pipe die cavity.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the integral plugging mechanism for hydraulic support bending, the support joint units are arranged on the plug body, the plug body can bend along with the pipe fitting, and when the pipe fitting bends, the support joint units and the liquid medium in the hydraulic support cavity can support the inner wall of the pipe fitting, so that on one hand, the pipe fitting can be prevented from wrinkling and collapsing in the bending process, and the bending forming effect is good; on the other hand, the inner support of the plug body for the pipe fitting reduces the pressure requirement of pressure liquid, reduces the requirement for supercharging equipment, and saves production cost.

2. According to the hydraulic support bending integrated plugging mechanism, after the pipe fitting bending operation is completed, when the plug body is drawn back, due to the existence of hydraulic liquid, the pressure liquid can pull the plug to play a lubricating role, so that the plug body can be greatly conveniently drawn out, the operation is convenient, and the production efficiency is improved.

3. The integral plugging mechanism for hydraulic support bending has the advantages that after the bending operation of a pipe fitting is completed, when the plug body is drawn back, the plug body can push outwards at a micro-corrugated position on the inner wall of the bent pipe fitting at the bending position of the pipe fitting, so that the effect of rounding is achieved, the bending quality and the effect are improved, in addition, the number of the support joint units is multiple, and the hydraulic support cavities of the support joint units all play a pressure support role for the pipe wall, so that the support joint units only need to shape the micro-deformation of the hydraulic support cavity parts, the shaping amount is small, and the shaping effect is good.

4. According to the integral plugging mechanism for hydraulic support bending, the inlet and the outlet of the plug are controlled by the plug rod arranged at one end, so that after one bending of a pipe fitting needing to be continuously bent is completed, the plug rod is operated to draw out the plug and then the plug is inserted into another position needing to be bent, the continuous bending can be realized, and the function is stronger.

Drawings

Fig. 1-2 are schematic diagrams of the hydraulic support wrap-around integrated plugging mechanism of the present invention in a mold, wherein fig. 1 is a front sectional view, and fig. 2 is a perspective view.

Fig. 3 to 4 are schematic views of the plug, wherein fig. 3 is a front sectional view and fig. 4 is a perspective view.

Fig. 5 to 6 are schematic views of the support joint unit, in which fig. 5 is a front sectional view and fig. 6 is a perspective view.

Fig. 7 to 8 are schematic views of the front occlusion part, wherein fig. 7 is a front sectional view and fig. 8 is a perspective view.

Fig. 9 to 10 are schematic views of the rear plugging portion, in which fig. 9 is a front sectional view and fig. 10 is a perspective view.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

Referring to fig. 1-10, the hydraulically-supported bending integrated plugging mechanism of the utility model comprises a plug, wherein the plug comprises a plug body 1 for plugging the inner wall of a pipe to form a closed cavity and supporting the inner wall of the pipe during bending and a plug rod 2 for pushing the plug body 1 into the inner cavity of the pipe, and liquid passing mechanisms which are communicated with each other are arranged in the plug body 1 and the plug rod 2; the front end of the plug rod 2 is connected with the plug body 1; the plug body 1 comprises a front plugging portion 3, a rear plugging portion 4 and a supporting joint unit portion 5 arranged between the front plugging portion 3 and the rear plugging portion 4, the supporting joint unit portion 5 comprises a plurality of supporting joint units used for supporting the inner wall of a pipe fitting, the supporting joint units are connected through spherical joints, two adjacent supporting joint units are provided with hydraulic supporting cavities used for containing liquid media to hydraulically support the inner wall of the pipe fitting, and the hydraulic supporting cavities are communicated with a liquid passing mechanism.

Referring to fig. 1-10, the supporting joint unit comprises a joint part 6 and a clamping sleeve 7 sleeved on the joint part 6, wherein the outer diameter of the clamping sleeve 7 is matched with the inner diameter of the pipe fitting; the joint part 6 comprises a joint body, a spherical groove 8 arranged in the front end of the joint body and a spherical connecting body 9 arranged at the rear end of the joint body; when two adjacent supporting joint units are connected, the spherical connecting body 9 of one joint part 6 is matched with the spherical groove 8 of the other joint part 6, and the gap between two adjacent joint parts 6 is smaller than the width of the clamping sleeve 7. Set up the support joint unit of above-mentioned structure, in two adjacent support joint units, spherical groove 8 and spherical connector 9 phase-matches to realize spherical joint and connect, make and to support and to rotate in a flexible way each other between the joint unit, realize following the action of bending of pipe fitting.

Referring to fig. 1-10, an annular step is provided on the outer wall of the front end of the joint body, and the clamping sleeve 7 includes a sleeve portion for matching with the outer wall of the joint body and a clamping portion for matching with the annular step; the gap between two adjacent joints 6 is smaller than the width of the clamping sleeve. . The clamping sleeve 7 with the structure is arranged, the clamping sleeve 7 is sleeved from the rear end of the joint part 6, the annular step of the joint part 6 is clamped with the clamping part after the sleeve is sleeved in place, and the clamping sleeve 7 can be dragged to move backwards when the joint part 6 is pulled backwards; because the clearance between two adjacent joint parts 6 is less than the width of the clamping sleeve 7, when the joint parts 6 are pushed forwards, even if the clamping sleeve 7 slides backwards, the clamping sleeve 7 still can be pushed to the next joint part 6, namely, the clamping sleeve 7 has a limiting structure in the front and the back, so that the clamping sleeve can be firmly connected to the joint parts 6.

Referring to fig. 1-10, the joint part 6 comprises two symmetrically arranged half joint parts 6-1, and a gap is formed between the two half joint parts 6-1, and the gap communicates the hydraulic support cavity with the liquid passing mechanism. By arranging the joint part 6 with the structure, when the supporting joint unit is installed, firstly, the spherical groove 8 of one semi-joint part 6-1 is matched with the spherical connecting body 9 on the adjacent joint part 6, then, the spherical groove 8 of the other semi-joint part 6-1 is matched with the spherical connecting body 9, the two semi-joint parts 6-1 are symmetrical to form an integral joint part 6, at the moment, the clamping sleeve 7 is sleeved on the outer side of the joint body, so that the clamping sleeve 7 clamps and fixes the two semi-joint parts 6-1, and the spherical groove 8 and the adjacent spherical connecting body 9 form spherical joint connection; meanwhile, by arranging the two half joint parts 6-1, a gap is formed between the two half joint parts, the gap communicates the liquid passing mechanism with the hydraulic support cavity, pressure liquid flows into the hydraulic support cavity through the gap after entering the liquid passing mechanism, so that hydraulic support is formed between the two support joint units, and each support joint unit and a liquid medium in the hydraulic support cavity play a role of inner support on the inner wall of the pipe fitting, so that the pipe fitting is prevented from wrinkling and collapsing in the bending process. .

Referring to fig. 1 to 10, the front plugging portion 3 includes a plugging head 10 and a front sealing ring 11 sleeved on the plugging head 10; the outer diameter of the front sealing ring 11 is matched with the inner diameter of the pipe fitting, and the plugging head 10 is connected to the supporting joint unit part 5 through a spherical joint. The front plugging part 3 with the structure is arranged, and after the front part of the plug is inserted into a pipe, the plug 10 and the front sealing ring 11 are abutted against the inner wall of the pipe, so that the sealing effect is achieved.

Referring to fig. 1 to 10, the plugging head 10 includes a plugging head body 10-1, an annular protrusion disposed at a front end of the plugging head body 10-1, and a spherical connector 9 disposed at a rear end of the plugging head body 10-1; the spherical connecting body 9 is matched with the spherical groove 8 of the foremost supporting joint unit; the outer diameter of the plugging head body 10-1 is matched with the inner diameter of the front sealing ring 11. The plugging head 10 with the structure is arranged, the front sealing ring 11 is sleeved on the plugging head body 10-1, and the front end of the front sealing ring 11 abuts against the annular bulge, so that the front sealing ring 11 is tightly clamped on the plugging head 10; the spherical connecting body 9 is matched with the spherical groove 8 on the supporting joint unit, and the blocking head 10 is connected with the supporting joint unit part 5 through a spherical joint, so that the blocking head 10 can flexibly rotate relative to the supporting joint unit part 5.

Referring to fig. 1-10, the rear plugging portion 4 includes a plugging column 13 and a rear sealing ring 14 sleeved on the plugging column 13, and an outer diameter of the rear sealing ring 14 matches with an inner diameter of the pipe fitting; the plugging column 13 is sleeved at the front end of the plugging rod 2, the front end of the plugging column 13 protrudes out of the front end of the plugging rod 2, so that an installation section is formed, and the rear sealing ring 14 is sleeved on the installation section; the front end of the plugging column 13 is internally provided with a spherical groove 8 matched with a spherical connector 9 of the supporting joint unit. Set up the back shutoff portion 4 of above-mentioned structure, shutoff post 13 is connected on end cap pole 2, shutoff post 13 passes through spherical joint with the support joint unit and is connected, end cap pole 2 is connected with end cap body 1 like this, after end cap pole 2 promotes end cap body 1 and gets into in the pipe fitting, back sealing washer 14 pastes tight pipe fitting inner wall, thereby sealing washer 11 in the front, form a airtight cavity between back sealing washer 14 and the pipe fitting inner wall, after letting in pressure liquid, play the effect of an outside support to the pipe fitting inner wall, prevent that the pipe fitting from wrinkling when the bending, improve the return bend effect.

Referring to fig. 1-10, the plugging column 13 includes two symmetrically disposed half plugging columns 13-1. By arranging the connecting column with the structure, when the blocking column 13 is connected with the supporting joint unit, firstly, the spherical groove 8 of one semi-blocking column 13-1 is matched with the spherical connector 9 of the supporting joint unit; then, matching the spherical groove 8 of the other half plugging column 13-1 with the spherical connector 9 of the support joint unit, so that the two half plugging columns 13-1 are symmetrical to form an integral plugging column 13; finally, the rear sealing ring 14 is sleeved, and the plugging column 13 is sleeved in the plugging rod 2, so that the connection between the plugging column 13 and the supporting joint unit is completed.

Referring to fig. 1 to 10, the plugging column 13 is connected to the plugging rod 2 through a connection structure, and the connection structure includes a front receiving hole provided at the front end of the plugging rod 2 for receiving the plugging column 13, a screw counterbore provided at the rear end of the plugging rod 2, a connection screw 15, and a threaded hole provided at the rear end of the plugging column 13. By means of the connecting structure, after the plugging column 13 is sleeved into the front accommodating hole, the connecting screw 15 penetrates through the screw counter bore, the connecting screw 15 is connected with a threaded hole in the rear end of the plugging column 13 and screwed down, and the plugging column 13 is connected with the plugging rod 2.

Referring to fig. 1-10, the liquid passing mechanism comprises a screw liquid passing hole arranged in the connecting screw 15, a blocking column 13 liquid passing hole arranged in the blocking column 13, and a joint part 6 liquid passing hole arranged in the joint part 6; the screw liquid through hole, the plugging column 13 liquid through hole and the joint part 6 liquid through hole are communicated with each other. The liquid passing mechanism is arranged, the liquid supply mechanism is started, and pressure liquid is conveyed into a screw counter bore at the rear end of the plug rod 2, so that the pressure liquid sequentially passes through the screw liquid passing groove, the liquid passing groove of the plugging column 13 and the liquid passing groove of the joint part 6 to reach the interior of the plug body 1, and the joint part 6 comprises two half joint parts 6-1 which are symmetrically arranged, so that the pressure liquid can reach the inner cavity of the pipe fitting through a gap between the two half joint parts 6-1, and the inner wall of the pipe fitting is supported outwards.

Referring to fig. 1-10, the working principle of the hydraulic support bending integrated plugging mechanism is as follows:

when the pipe fitting is subjected to bending operation, firstly, the pipe fitting to be subjected to bending is installed at a correct position; then, operating the plug rod 2 to enable the plug rod 2 to push the plug body 1 to enter the inner cavity of the pipe fitting; then, the plug body 1 is continuously pushed until the plug body 1 reaches the designated position of the inner wall of the pipe fitting, and a closed cavity is formed between the front plugging part 3 and the rear plugging part 4 because the plug body 1 is matched with the inner wall of the pipe fitting; next, starting the liquid supply device, conveying pressure liquid to the liquid passing mechanism, and communicating the liquid passing mechanism with a closed cavity in the pipe fitting so as to introduce the pressure liquid into an inner cavity of the pipe fitting, specifically into a hydraulic support cavity between two adjacent support joint units; next, the bending mechanism acts to perform bending operation on the pipe fitting, at the moment, the supporting joint unit part 5 consists of a plurality of supporting joint units, and the plurality of supporting joint units are connected through spherical joints, so that each supporting joint unit can rotate mutually, when the pipe fitting is driven to be bent by the bending machine, the plug body 1 positioned in the pipe fitting can be bent and deformed, and each supporting joint unit and the liquid medium positioned in the hydraulic supporting cavity play a role in supporting the inner wall of the pipe fitting, so that the pipe fitting is prevented from wrinkling and collapsing in the bending process, and sequential bending is completed; finally, for the pipe fitting with only a single elbow, the plug body 1 is pulled out of the pipe fitting backwards through the plug rod 2, and then the bent pipe fitting is taken down, so that the winding processing of the pipe fitting is completed; for the pipe fitting needing continuous bending, the plug body 1 is pulled backwards away from the bent part of the pipe fitting through the plug rod 2, so that the plug body 1 is located at the next part to be bent in the pipe fitting, then the second bending action is repeated until all bending operations of one pipe fitting are completed, and then the plug is taken out of the pipe fitting, so that continuous bending is realized.

Referring to fig. 1-2, a hydraulic support bending forming die comprises a conduit module 16 for limiting the position of a pipe in a radial direction and a pipe bending module 17 for clamping the pipe to perform bending movement; the bending module 17 comprises a fixed bending die and a movable bending die, wherein the fixed bending die and the movable bending die are respectively provided with a bending die cavity matched with the outer wall of the pipe fitting; the catheter module 16 comprises a catheter fixed die and a catheter movable die; and the guide pipe fixed die and the guide pipe movable die are respectively provided with a guide pipe die cavity matched with the outer wall of the pipe fitting.

Referring to fig. 1 to 2, the bending die fixing mold includes a bending die 18, and a bending die cavity for matching the pipe fitting is provided on the bending die 18; the movable die for bending the pipe comprises a clamping block 19, a clamping cavity for matching the pipe fitting is formed in the clamping block 19, and the bending die cavity and the clamping cavity form the die cavity for bending the pipe. When the bending die is used for bending a pipe, the fixed die and the movable die are arranged, the movable die for bending the pipe is firstly opened, namely the clamping block 19 is opened, the pipe is placed in the die cavity of the bending die, and when the movable die for bending the pipe is closed, the clamping block 19 moves towards the bending die 18, so that the pipe is clamped, and the pipe is conveniently clamped to perform bending action.

Referring to fig. 1 to 2, the catheter fixing mold comprises a wrinkle preventing block 20, one end of the wrinkle preventing block 20 is connected with the bending mold 18, and a catheter fixing cavity for matching with a pipe fitting is formed in the wrinkle preventing block 20; the guide pipe movable die comprises a pressing block 21, a pressing cavity used for being matched with a pipe fitting is formed in the pressing block 21, and the guide pipe fixing cavity and the pressing cavity form a guide pipe die cavity. Set up above-mentioned pipe fixed mould and pipe movable mould, when needs carry out the bending to the pipe fitting, when opening the return bend movable mould, open the pipe movable mould, open briquetting 21 promptly, put the pipe fitting simultaneously in the pipe die cavity, in the pipe movable mould compound die, briquetting 21 toward the direction motion of crease-resistant piece 20 to compress tightly the pipe fitting, thereby carry out radial direction's spacing to the pipe fitting when the bending motion.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims

1. The integrated plugging mechanism for hydraulic support bending is characterized by comprising a plug, wherein the plug comprises a plug body and a plug rod, the plug body is used for plugging the inner wall of a pipe fitting to form a closed cavity and supporting the inner wall of the pipe fitting during bending, the plug rod is used for pushing the plug body to enter the inner cavity of the pipe fitting, and liquid passing mechanisms which are communicated with each other are arranged in the plug body and the plug rod; the front end of the plug rod is connected with the plug body, and the outer walls of the plug rod and the plug body are matched with the inner wall of the pipe fitting; the plug body comprises a front plugging portion, a rear plugging portion and a supporting joint unit portion arranged between the front plugging portion and the rear plugging portion, the supporting joint unit portion comprises a plurality of supporting joint units, and the supporting joint units are connected through spherical joints.

2. The hydraulically supported bending integrated plugging mechanism according to claim 1, wherein the supporting joint unit comprises a joint part and a clamping sleeve sleeved on the joint part, and the outer diameter of the clamping sleeve is matched with the inner diameter of the pipe fitting; the joint part comprises a joint body, a spherical groove arranged in the front end of the joint body and a spherical connector arranged at the rear end of the joint body; when two adjacent supporting joint units are connected, the spherical connecting body of one joint part is matched with the spherical groove of the other joint part, and the gap between the two adjacent joint parts is smaller than the width of the clamping sleeve.

3. The integrated hydraulic support and wrap closure mechanism of claim 2, wherein said articulation comprises two symmetrically disposed half-articulations forming a gap therebetween, said gap communicating said hydraulic support chamber with said fluid communication mechanism.

4. The hydraulically supported bending integrated plugging mechanism according to claim 2, wherein the front plugging portion comprises a plugging head and a front sealing ring sleeved on the plugging head; the outer diameter of the front sealing ring is matched with the inner diameter of the pipe fitting, and the plugging head is connected to the supporting joint unit part through a spherical joint.

5. The hydraulically supported winding integrated plugging mechanism according to claim 4, wherein the plugging head comprises a plugging head body, an annular protrusion arranged at the front end of the plugging head body and a spherical connecting body arranged at the rear end of the plugging head body; the spherical connecting body is matched with the spherical groove of the foremost supporting joint unit; the outer diameter of the plugging head body is matched with the inner diameter of the front sealing ring.

6. The hydraulically supported and detoured integrated plugging mechanism according to claim 2, wherein the rear plugging portion comprises a plugging column and a rear sealing ring sleeved on the plugging column, and the outer diameter of the rear sealing ring is matched with the inner diameter of the pipe fitting; the plugging column is sleeved at the front end of the plugging rod, the front end of the plugging column protrudes out of the front end of the plugging rod, so that an installation section is formed, and the rear sealing ring is sleeved on the installation section; and a spherical groove matched with the spherical connector of the support joint unit is arranged in the front end of the plugging column.

7. The hydraulically supported wrap around integrated plugging mechanism of claim 6, wherein said plugging column comprises two symmetrically disposed half plugging columns.

8. The integrated hydraulic support and bending plugging mechanism according to claim 7, wherein the plugging column is connected with the plug rod through a connecting structure, and the connecting structure comprises a front accommodating hole arranged at the front end of the plug rod and used for accommodating the plugging column, a screw counter bore arranged at the rear end of the plug rod, a connecting screw and a threaded hole arranged at the rear end of the plugging column.

9. The hydraulically supported wrap around integrated plugging mechanism of claim 8, wherein said fluid communication mechanism comprises a screw fluid communication hole disposed in said connecting screw, a plugging post fluid communication hole disposed in said plugging post, and a joint portion fluid communication hole disposed in said joint portion; the screw liquid through hole, the plugging column liquid through hole and the joint part liquid through hole are communicated with each other.

10. A forming die for hydraulic support bending, which is characterized by comprising the integrated blocking mechanism of any one of claims 1 to 9, a conduit module for limiting the position of a pipe in a radial direction, and a pipe bending module for clamping the pipe to perform bending movement; the pipe bending module comprises a fixed pipe bending mould and a movable pipe bending mould, and the fixed pipe bending mould and the movable pipe bending mould are both provided with pipe bending mould cavities matched with the outer wall of the pipe fitting; the catheter module comprises a catheter fixed die and a catheter movable die; and the guide pipe fixed die and the guide pipe movable die are respectively provided with a guide pipe die cavity matched with the outer wall of the pipe fitting.