CN207796314U - A kind of non-uniform thickness hydroforming flexible composite pipe - Google Patents

Abstract

The utility model is related to Tube Hydroforming technical fields, provide a kind of non-uniform thickness hydroforming flexible composite pipe, including supervisor and the looped pipeline for being socketed in the supervisor both ends respectively；The pipe shaft of the supervisor shapes wave structure；The supervisor and the socket part of looped pipeline fit closely to form double-layer structure；The supervisor is concordant at the port of looped pipeline；Whereby, the utility model provides a kind of non-uniform thickness hydroforming flexible composite pipe, looped pipeline is socketed then using the integrally formed method formation double-layer structure of hydraulic pressure by being responsible for both ends, and wave structure is formed on supervisor's pipe shaft using passive hydraulic structure and forms boss connection structure at the port at both ends；Instead of the welding sequence in traditional handicraft, fatigue strength is significantly improved；Also permeability, oil leak are solved the problems, such as.The thinning rigidity reduced herein in the peak regions of wave structure in forming process so that the utility model, which is applicable to, requires in higher operating mode axial displacement.

Description

A kind of non-uniform thickness hydroforming flexible composite pipe

Technical field

The utility model is related to Tube Hydroforming technical field more particularly to a kind of non-uniform thickness hydroforming flexible compounds Pipe.

Background technology

With the development of society and being constantly progressive for human civilization, people propose higher and higher want to modern manufacturing industry It asks, such as in automotive field, emission from vehicles is required with the rising and laws and regulations of the energy and the cost of raw material It is promoted, the lightweight of vehicle structure, which seems, to become more and more important.Similar problem is simultaneously also encountered in other industrial circles, from And make a kind of structure lightened development trend as modern advanced manufacturing technique.

Exactly to reduce, material consumption, part is light, intensity is high and structure design is flexibly excellent for fittings hydraulic formation technique Point has adapted to the light-weighted demand for development of the field structures such as automobile and aircraft, and it is domestic and international to become current metal forming field The hot spot of research.

Fittings hydraulic formation is referred to as a kind of advanced plastic working technique of processing hollow pipe fitting, and forming process is at one Power transmission medium is used fluid as in closed cavity, while applying internal pressure, cooperation axial feed feed supplement makes pipe also It is a kind of few without machining, accurate (half is accurate) forming technique belongs to along the radial technique by certain track expansion forming In advanced manufacturing technology scope.

Bellows is a kind of flexible piece, allows to generate larger deformation under the action of axial force, cross force and moment of flexure, Mainly as the compliant section of elastic element, metal hose and expansion joint in engineering technology, to compensate because expanding with heat and contract with cold, mechanical position Pipeline caused by moving or vibrating, the variation of equipment equidimension or axial direction, transverse direction and angular displacement.

Referring to Fig. 1, the conventional production methods of corrugated flexible composite pipe are：The both ends housing of supervisor 1 with ripple struction Looped pipeline 2 forms bridging arrangement；It is brazed to form weld seam A at bridging arrangement later.In actual use, whole part is in In vibration environment, therefore fatigue failure is also easy to produce at weld seam A, and the problems such as there is also permeability, oil leaks.Conventional production methods The problems such as there is also complex technical process, high rejection rate, big labor intensity.

In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.

Utility model content

For above-mentioned defect, the purpose of this utility model is to provide a kind of non-uniform thickness hydroforming flexible composite pipe, Looped pipeline is socketed then using the integrally formed method formation double-layer structure of hydraulic pressure by being responsible for both ends, and is existed using passive hydraulic structure It is responsible on pipe shaft and forms wave structure and the formation boss connection structure at the port at both ends；Instead of in traditional handicraft Welding sequence significantly improves fatigue strength；Also permeability, oil leak are solved the problems, such as.The wave of wave structure in forming process The thinning rigidity reduced herein in peak region so that the utility model is applicable to requires higher operating mode to axial displacement In.

To achieve the goals above, the utility model provides a kind of non-uniform thickness hydroforming flexible composite pipe, including supervisor And it is socketed in the looped pipeline at the supervisor both ends respectively；The pipe shaft of the supervisor shapes wave structure；

The supervisor and the socket part of looped pipeline fit closely to form double-layer structure；It is put down at the supervisor and the port of looped pipeline Together.

The shape of non-uniform thickness hydroforming flexible composite pipe according to the present utility model, the double-layer structure is straight or curved It is bent.

Non- uniform thickness hydroforming flexible composite pipe according to the present utility model, the double-layer structure one at a side ports Shape boss connection structure, another side ports connecting flange or Pa type joints.

Non- uniform thickness hydroforming flexible composite pipe according to the present utility model, connecting flange or Pa types connect at the port Head.

The material of non-uniform thickness hydroforming flexible composite pipe according to the present utility model, the supervisor and looped pipeline is stainless steel 304。

Non- uniform thickness hydroforming flexible composite pipe according to the present utility model, the thickness of the double-layer structure are not more than 1.5mm。

The thickness of non-uniform thickness hydroforming flexible composite pipe according to the present utility model, the supervisor is not more than 1mm, described The thickness of looped pipeline is 1~3mm.

The thickness of non-uniform thickness hydroforming flexible composite pipe according to the present utility model, the supervisor is 0.3mm, 0.5mm Or 0.8mm；The thickness of the looped pipeline is：1.2mm, 1.5mm, 2mm or 2.5mm.

Non- uniform thickness hydroforming flexible composite pipe according to the present utility model, each peak regions of the wave structure Thickness is less than the thickness of the supervisor.

Non- uniform thickness hydroforming flexible composite pipe according to the present utility model, the flexible composite pipe using hydraulic pressure one at Shape process forming.

Then the utility model is socketed looped pipeline using the integrally formed method formation double-layer structure of hydraulic pressure by being responsible for both ends, and Wave structure is formed on supervisor's pipe shaft using passive hydraulic structure and forms boss connection structure at the port at both ends； Instead of the welding sequence in traditional handicraft, fatigue strength is significantly improved；Also permeability, oil leak are solved the problems, such as.It shaped The thinning rigidity reduced herein in the peak regions of wave structure in journey so that the utility model is applicable to axial position Shifting requires in higher operating mode.

Description of the drawings

Fig. 1 is prior art construction schematic diagram；

Fig. 2 is the front view of one embodiment of the utility model；

Fig. 3 is the structural schematic diagram of the utility model B area；

Fig. 4 is the structural schematic diagram of another embodiment of the utility model；

Fig. 5 is the structural schematic diagram in the regions the utility model D；

Fig. 6 is the structural schematic diagram in the regions the utility model E；

Fig. 7 is the structural schematic diagram before the utility model forming；

Fig. 8 is the structural schematic diagram in the regions the utility model F；

Fig. 9 is the structural schematic diagram of another embodiment of the utility model；

1- is responsible in the figure, 2- looped pipelines, 3- boss connection structures, 4- flanges；A- weld seams, the peak regions C-.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Referring to Fig. 2, the utility model provides a kind of non-uniform thickness hydroforming flexible composite pipe, including is responsible for 1 and divides It is not socketed in the looped pipeline 2 at 1 both ends of the supervisor；The pipe shaft of the supervisor 1 is equipped with wave structure；

Referring to Fig. 3, the supervisor 1 and the socket part of looped pipeline 2 form double-layer structure；The port of the supervisor 1 and looped pipeline 2 Place is concordant.

The utility model is produced using hydraulic forming method, and detailed process is as follows：

A stocks up

Referring to Fig. 7, Fig. 8；It is socketed looped pipeline 2 respectively being responsible for 1 both ends；Supervisor 1 is in internal layer, and looped pipeline 2 is in outer layer；

B rises forming in advance

The workpiece that set connects is placed on hydraulic forming equipment, leads to high pressure water later and rises in advance, makes the supervisor 1 and looped pipeline 2 socket part fits closely to form the double-layer structure；The internal layer of the double-layer structure is that 1 outer layer of supervisor is looped pipeline 2；Referring to Fig. 3, Fig. 5；

The passive hydraulic structure formings of C

The B rises in advance after forming, further pressurizes, by the passive hydraulic structure of hydroforming, in the pipe of the supervisor 1 Ring wave shapes the wave structure with it；

D edgings

Two tip cut-off excess stocks of workpiece after forming keep the supervisor 1 concordant at the port of looped pipeline 2.

E double-layer structure bendings

Referring to Fig. 4, one embodiment of the utility model；According to the difference of service condition, supervisor 1 is formed by double with looped pipeline 2 Layer structure can be that straight tube may be bend pipe.This process is according to requiring the shape and size bending of the double-layer structure to wanting In the range of asking.

Referring to Fig. 5, the bend pipe is also double-layer structure, and internal layer is supervisor 1, and outer layer is looped pipeline 2；

By the above process, it can be seen that, the utility model is integrally formed instead of traditional work using hydraulic pressure using manufacturing process Process；Rejection rate is low, simple for process and significantly reduce cost.

Since the utility model is using supervisor 1 and the socket of looped pipeline 2 and hydroforming, instead of the Welder of traditional handicraft Sequence, therefore the fatigue strength of total has significant raising.The internal layer and corrugated of the utility model double-layer structure simultaneously Structure is formed by supervisor 1, and concordant at port；Therefore also avoid permeability, oil leak appearance.

The utility model needs to be connected with other parts in actual use.It is preferred, therefore, that the utility model Boss connection structure 3 and flange 4 are respectively equipped at the port；Referring to Fig. 4.

The boss connection structure 3 shapes in the same process with the wave structure；That is, in the C by hydrodynamic pressure During structure formation, the double-layer structure of port section forms the boss connection structure 3；

Therefore, the boss connection structure 3 is also double-layer structure, and internal layer is supervisor 1, and outer layer is looped pipeline 2；Referring to Fig. 6.

The flange 4 uses soldering connection with the port.

Preferably, during the wave structure shapes, peak regions C is plastically deformed the utility model After be thinned, i.e., herein thickness be less than supervisor 1 thickness；Thinned peak regions C reduces the rigidity of wave structure so that this Utility model, which is applicable to, requires in higher operating mode axial displacement.

The thickness of the supervisor 1 of the utility model is not more than 1mm；The thickness of looped pipeline 2 is 1~3mm；

Preferably, the thickness of the supervisor 1 of the utility model is 0.3mm, 0.5mm or 0.8mm；The thickness of looped pipeline 2 is： 1.2mm, 1.5mm, 2mm or 2.5mm.The thickness of the utility model preferably supervisor 1 is not more than 0.3mm, and the thickness of looped pipeline 2 is not more than 1.2mm；Therefore the double-layer structure is not more than 1.5mm.

Preferably, the material of the supervisor 1 of the utility model and looped pipeline 2 is stainless steel 304.

Referring to Fig. 9, it is preferred that be all connected with flange 4 at the port of the utility model.

Preferably, the connectors such as Pa type joints can also be connected at the port of the utility model.

In conclusion the utility model is by being responsible for both ends socket looped pipeline and then being formed using the integrally formed method of hydraulic pressure double Layer structure, and wave structure is formed on supervisor's pipe shaft using passive hydraulic structure and forms boss at the port at both ends Connection structure；Instead of the welding sequence in traditional handicraft, fatigue strength is significantly improved；Also permeability is solved, oil leak is asked Topic.The thinning rigidity reduced herein in the peak regions of wave structure in forming process so that the utility model can be applied It is required in higher operating mode to axial displacement.

Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence In the case of, those skilled in the art work as can make various corresponding change and deformations, but these according to the utility model Corresponding change and deformation should all belong to the protection domain of the utility model the attached claims.

Claims (10)

1. a kind of non-uniform thickness hydroforming flexible composite pipe, which is characterized in that including being responsible for and being socketed in respectively the supervisor The looped pipeline at both ends；The pipe shaft of the supervisor shapes wave structure；

The supervisor and the socket part of looped pipeline fit closely to form double-layer structure；The supervisor is concordant at the port of looped pipeline.

2. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that the shape of the double-layer structure Shape is straight or bending.

3. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that at a side ports The integrally formed boss connection structure of double-layer structure, another side ports connecting flange or Pa type joints.

4. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that connection method at the port Blue or Pa type joints.

5. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that the supervisor and looped pipeline Material is stainless steel 304.

6. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that the thickness of the double-layer structure Degree is not more than 1.5mm.

7. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that the thickness of the supervisor is not More than 1mm, the thickness of the looped pipeline is 1~3mm.

8. non-uniform thickness hydroforming flexible composite pipe according to claim 7, which is characterized in that the thickness of the supervisor is 0.3mm, 0.5mm or 0.8mm；The thickness of the looped pipeline is：1.2mm, 1.5mm, 2mm or 2.5mm.

9. non-uniform thickness hydroforming flexible composite pipe according to claim 1, which is characterized in that the wave structure The thickness of each peak regions is less than the thickness of the supervisor.

10. according to non-uniform thickness hydroforming flexible composite pipe as described in any one of claim 1 to 9, which is characterized in that described Flexible composite pipe uses the integrally formed process forming of hydraulic pressure.