阅读说明：本技术 双室管及其制造方法、管子 (Double-chamber tube, method for manufacturing same, and tube ) 是由 陈寿 姚正禹 林茂青 唐绍国 于 2021-08-06 设计创作，主要内容包括：本发明公开一种双室管及其制造方法、管子,其中双室管包括外管和分隔片材,所述分隔片材的两端分别密封固定连接在所述外管内,所述分隔片材将所述外管分隔为两个截面积相等的腔室。本发明通过分隔片材将所述外管分隔为两个截面积相等的腔室,可以使得双室管出液均匀。(The invention discloses a double-chamber tube, a manufacturing method thereof and a tube, wherein the double-chamber tube comprises an outer tube and a partition sheet, two ends of the partition sheet are respectively and fixedly connected in the outer tube in a sealing manner, and the partition sheet divides the outer tube into two chambers with equal sectional areas. The invention divides the outer tube into two chambers with equal sectional areas through the separating sheet, so that the liquid outlet of the double-chamber tube is uniform.)

1. The double-chamber tube is characterized by comprising an outer tube and a partition sheet, wherein two ends of the partition sheet are respectively fixedly connected in the outer tube in a sealing manner, and the partition sheet divides the outer tube into two chambers with equal sectional areas.

2. A dual chamber tube according to claim 1 wherein the outer tube and the separator sheet are formed by bending from a single sheet of formed material.

3. The dual chamber tube of claim 1 wherein the cross-section of the separator sheet is an S-shaped structure, the separator sheet having welded ends at the two free ends of the S-shaped structure, the welded ends being fixedly welded to the inner wall of the outer tube.

4. A double chamber tube according to claim 3 wherein the S-shaped structure comprises two semi-circles, the two semi-circles being end to end and the two semi-circles being oppositely oriented.

5. A method of manufacturing a dual chamber tube according to any of claims 1 to 4, comprising the steps of:

bending one end of the formed sheet to form a partition sheet;

fixing and shaping the partition sheet by using a first cavity die and a second cavity die;

forming an outer tube around the outer peripheral surfaces of the first cavity die and the second cavity die at the other end of the molding sheet;

fixing and shaping the outer pipe from the outer side by utilizing the first forming die and the second forming die;

and welding, sealing and fixing the overlapped connection parts of the two ends of the outer pipe and the partition sheet.

6. The manufacturing method according to claim 5, wherein the step of welding, sealing and fixing the overlapped joints of the two ends of the outer tube and the partition sheet further comprises the steps of:

heating the overlapped joint of the two ends of the outer pipe and the partition sheet by using a heating device;

and/or before the step of welding, sealing and fixing the overlapped joints of the two ends of the outer pipe and the separation sheet, the method further comprises the following steps:

and pressing the overlapped joint of the two ends of the outer pipe and the partition sheet.

7. The manufacturing method according to claim 6, wherein the heating device includes a first heating device and a second heating device, the first heating device and the second heating device respectively include an inner heating device and an outer heating device, the inner heating device of the first heating device is located on the first chamber mold at a position corresponding to the first end of the partition sheet, the inner heating device of the second heating device is located on the second chamber mold at a position corresponding to the second end of the partition sheet, the outer heating device of the first heating device is located outside the outer tube at a position corresponding to the first end of the partition sheet, and the outer heating device of the second heating device is located outside the outer tube at a position corresponding to the second end of the partition sheet;

and/or the first cavity die is provided with a groove at a position corresponding to the overlapping joint of the outer tube and the first end of the separation sheet, the second cavity die is provided with a groove at a position corresponding to the overlapping joint of the outer tube and the second end of the separation sheet, the internal heating device of the first heating device is arranged in the groove of the first cavity die, and the internal heating device of the second heating device is arranged in the groove of the second cavity die.

8. The manufacturing method according to claim 7, wherein the inner heating means and the outer heating means are provided with heating surfaces which are in contact with overlapped junctions of both ends of the outer tube and the partition sheet, respectively, and which heat and pressurize the overlapped junctions of both ends of the outer tube and the partition sheet, and the heating surfaces of the inner heating means are flush with the surfaces of the first chamber mold and the second chamber mold.

9. The manufacturing method according to claim 5, wherein the first molding die and the second molding die are molding rollers, and outer peripheral surfaces of the molding rollers are arc-shaped concave surfaces.

10. A pipe comprising the dual chamber tube of any one of claims 1 to 4, further comprising an integrally formed pipe joint, wherein the pipe joint comprises a neck section and a connecting section which are connected, a partition plate is arranged in the pipe joint, the partition plate divides the interior of the pipe joint into two chambers with equal cross-sectional areas, the free end of the connecting section is fixedly connected with one end of the dual chamber tube in a butt joint mode, and the cross-sectional shapes of the chambers of the pipe joint are the same as the cross-sectional shapes of the chambers of the dual chamber tube and are in butt joint with each other.

Technical Field

The invention relates to the technical field of pipes, in particular to a double-chamber pipe, a manufacturing method thereof and a pipe.

Background

At present, the double-chamber tube with more mass production in the market is a tube-in-tube structure, namely a small tube is assembled in a large tube and is concentric, and the large tube and the small tube are produced respectively and then assembled together. The tube making method has multiple working procedures and high cost. When the outer pipe is firstly stressed during use, the extrusion degree of the inner pipe and the extrusion degree of the outer pipe are inconsistent, so that the liquid output quantity of the inner pipe and the liquid output quantity of the outer pipe are uneven.

There is also known a double-or multi-chamber tube, which is separated by welding with a separator (film strip), and which is composed of a sheet material and a separator, the sheet material being welded with the separator and then being welded to a sheet material tube-making machine to form the tube. However, the process of the mode is complex, the shape of the separating strip is inconvenient to shape and easy to deform during pipe making, and the liquid output of the double chambers is uneven.

Disclosure of Invention

The invention mainly aims to provide a double-chamber tube, aiming at solving the technical problem of uneven liquid output of the double-chamber tube.

In order to achieve the purpose, the invention provides a double-chamber tube, which comprises an outer tube and a partition sheet, wherein two ends of the partition sheet are respectively and fixedly connected in the outer tube in a sealing manner, and the partition sheet divides the outer tube into two chambers with equal cross-sectional areas.

Alternatively, the outer tube and the partition sheet are bent from one piece of a forming sheet.

Optionally, the outer tube and the separation sheet are of the same material.

Optionally, the outer tube is a metal outer tube and the separator sheet is a metal separator sheet.

Optionally, the outer tube is a plastic outer tube and the separator sheet is a plastic separator sheet.

Optionally, both ends of the partition sheet are respectively fixedly connected with the inner wall of the outer tube by welding.

Optionally, the cross section of the separation sheet is of an S-shaped structure, two free ends of the separation sheet in the S-shaped structure are welding ends, and the welding ends are fixedly connected with the inner wall of the outer tube by welding.

Optionally, the S-shaped structure comprises two semi-circles, the two semi-circles are connected end to end, and the orientations of the two semi-circles are opposite.

Optionally, the thickness of the tube wall of the outer tube and the thickness of the partition sheet are the same and are both 0.25-0.6 mm.

The invention also provides a manufacturing method of the double-chamber tube, which comprises the following steps:

bending one end of the formed sheet to form a partition sheet;

fixing and shaping the partition sheet by using a first cavity die and a second cavity die;

forming an outer tube around the outer peripheral surfaces of the first cavity die and the second cavity die at the other end of the molding sheet;

fixing and shaping the outer pipe from the outer side by utilizing a first forming die and a second forming die;

and welding, sealing and fixing the overlapped connection parts of the two ends of the outer pipe and the partition sheet.

Optionally, before the step of welding, sealing and fixing the overlapped joints of the two ends of the outer tube and the partition sheet, the method further comprises the following steps:

the overlapped joint of the outer tube and the both ends of the partition sheet is heated by a heating device.

Optionally, before the step of welding, sealing and fixing the overlapped joints of the two ends of the outer tube and the partition sheet, the method further comprises the following steps:

and pressing the overlapped joint of the two ends of the outer pipe and the partition sheet.

Optionally, the heating device includes a first heating device and a second heating device, the first heating device and the second heating device respectively include an inner heating device and an outer heating device, the inner heating device of the first heating device is located on the first cavity mold and corresponds to the first end of the partition sheet, the inner heating device of the second heating device is located on the second cavity mold and corresponds to the second end of the partition sheet, the outer heating device of the first heating device is located outside the outer tube and corresponds to the first end of the partition sheet, and the outer heating device of the second heating device is located outside the outer tube and corresponds to the second end of the partition sheet.

Optionally, the first chamber mold is provided with a groove at a position corresponding to an overlapping joint of the outer tube and the first end of the partition sheet, the second chamber mold is provided with a groove at a position corresponding to an overlapping joint of the outer tube and the second end of the partition sheet, the inner heating device of the first heating device is disposed in the groove of the first chamber mold, and the inner heating device of the second heating device is disposed in the groove of the second chamber mold.

Optionally, the inner heating device and the outer heating device are respectively provided with a heating surface which is in contact with the overlapped joints of the two ends of the outer tube and the partition sheet, the heating surfaces heat and pressurize the overlapped joints of the two ends of the outer tube and the partition sheet, and the heating surface of the inner heating device is flush with the surfaces of the first cavity die and the second cavity die.

Optionally, the heating device is a high frequency heater or a resistance heater.

Optionally, the first forming die and the second forming die are forming rollers, and the outer peripheral surfaces of the forming rollers are arc-shaped concave surfaces.

The invention also provides a pipe, which comprises the double-chamber pipe and an integrally formed pipe joint, wherein the pipe joint comprises a neck section and a connecting section which are connected, a partition plate is arranged in the pipe joint and divides the interior of the pipe joint into two chambers with equal sectional areas, the free end of the connecting section is fixedly connected with one end of the double-chamber pipe in a butt joint mode, and the sectional shapes of the chambers of the pipe joint are the same as the sectional shapes of the chambers of the double-chamber pipe and are in butt joint one by one.

Optionally, the connecting section is a conical tube, the small end of the connecting section is connected with the neck section, and the large end of the connecting section is fixedly connected with one end of the outer tube of the double-chamber tube in a butt joint manner.

Alternatively, the pipe joint is integrally formed by injection molding.

The invention provides a double-chamber tube, which comprises an outer tube and a partition sheet, wherein two ends of the partition sheet are respectively fixedly connected in the outer tube in a sealing manner, and the partition sheet divides the outer tube into two chambers with equal sectional areas. The invention divides the outer tube into two chambers with equal sectional areas through the separating sheet, so that the liquid outlet of the double-chamber tube is uniform.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a dual chamber tube of the present invention;

FIG. 2 is a flow chart of an embodiment of the method of manufacturing the dual chamber tube of the present invention;

FIG. 3 is a schematic structural view of an embodiment of the manufacturing method of the present invention;

FIG. 4 is a flow chart of another embodiment of the method for manufacturing the dual chamber tube of the present invention;

FIG. 5 is a flow chart of another embodiment of the method of manufacturing a dual chamber tube of the present invention;

FIG. 6 is a schematic structural view of the tube of the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Outer tube	80	Heating device
11	Chamber	81	External heating device
				20	Partition sheet	82	Internal heating device
30	First cavity die	90	Pipe joint
				40	Second cavity die	91	Neck segment
50	First forming die	92	Connecting segment
				60	Second forming die	93	Partition board
70	Arc concave surface

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a dual-chamber tube, which includes an outer tube 10 and a partition sheet 20, wherein two ends of the partition sheet 20 are respectively fixedly connected in a sealing manner in the outer tube 10, and the partition sheet 20 divides the outer tube 10 into two chambers 11 with equal cross-sectional areas.

The invention divides the outer tube into two chambers with equal sectional areas through the separating sheet, so that the liquid outlet of the double-chamber tube is uniform.

In the present embodiment, the outer tube 10 and the partition sheet 20 are bent from one piece of a forming sheet. In addition, the outer pipe and the separating sheet are formed by bending one forming sheet, and the device has the advantages of simple process, high efficiency, low cost, easiness in popularization and the like.

In this embodiment, the outer tube 10 and the partition sheet 20 have the same material, and the use of the outer tube and the partition sheet having the same material is advantageous for improving the adhesive force between the outer tube and the partition sheet.

In this embodiment, the outer tube 10 is a metal outer tube, and the separator sheet 20 is a metal separator sheet. The metal outer pipe and the metal separation sheet are convenient to fixedly connect in various modes, and the hardness is firm and the application range is wide. Specifically, the outer tube 10 is an aluminum-plastic outer tube, and the partition sheet 20 is an aluminum-plastic partition sheet.

In one embodiment, the outer tube 10 is a plastic outer tube and the separator sheet 20 is a plastic separator sheet. The plastic outer pipe and the plastic separation sheet can reduce the product cost and have good corrosion resistance.

In the present embodiment, specifically, both ends of the partition sheet 20 are respectively welded and fixedly connected to the inner wall of the outer tube 10.

In the present embodiment, the cross section of the separation sheet 20 is an S-shaped structure, and the two free ends of the S-shaped structure of the separation sheet 20 are welding ends, and the welding ends are fixedly connected with the inner wall of the outer tube 10 by welding. The S-shaped structure has the characteristics of uniform stress and difficult deformation, and the double-chamber tube has better performance.

In this embodiment, the S-shaped structure includes two semicircles, two of the semicircles are connected end to end, and the orientations of the two semicircles are opposite.

In the present embodiment, the thickness of the tube wall of the outer tube 10 and the thickness of the separator sheet 20 are the same, and are both 0.25 to 0.6 mm. The thickness of the outer pipe wall and the thickness of the separating sheet are set to be the same, so that the outer pipe and the separating sheet are uniformly stressed when being welded and connected.

Referring to fig. 1 to 3, the present invention further provides a method for manufacturing the dual-chamber tube, which includes the following steps:

s10, bending one end of the formed sheet to form a partition sheet 20;

in this embodiment, a dual chamber tube is manufactured from a single sheet of formed sheet, specifically a separator sheet bent at one end.

S20, fixing and shaping the partition sheet 20 by using the first cavity mold 30 and the second cavity mold 40;

s30, forming the outer tube 10 with the other end of the formed sheet around the outer peripheral surfaces of the first and second cavity molds 30 and 40;

because the material of the molding sheet is soft, the other end of the molding sheet can form the outer pipe around the outer peripheral surfaces of the first cavity die and the second cavity die.

S40, fixing and shaping the outer tube 10 from the outside by the first molding die 50 and the second molding die 60;

and S50, welding, sealing and fixing the overlapped connection part of the two ends of the outer pipe 10 and the separation sheet 20.

Therefore, in the embodiment, the double-chamber tube is manufactured by one forming sheet, is formed in one step by the aid of the die and then is fixed by welding, and the double-chamber tube has the advantages of being simple in process, high in efficiency, low in cost, easy to popularize and the like.

Referring to fig. 4, in another embodiment, before the step of S50, the method further includes the following steps:

s42, the overlapped joint of the outer tube 10 and the both ends of the partition sheet 20 is heated by the heating device 80.

The welding effect can be improved by heating the overlapped connection of the two ends of the outer tube and the partition sheet.

Referring to fig. 5, in another embodiment, before the step of S50, the method further includes the following steps:

s44, the overlapped joints of the outer tube 10 and the both ends of the partition sheet 20 are pressed.

Through compressing tightly the overlap joint department of outer tube and the both ends of separating the sheet, can make the overlap joint department of the both ends of outer tube and separating the sheet bond more closely, further improve welding effect.

Specifically, the heating device 80 includes a first heating device and a second heating device, the first heating device and the second heating device respectively include an inner heating device 82 and an outer heating device 81, the inner heating device 82 of the first heating device is located on the first chamber mold 30 and corresponds to the first end of the partition sheet 20, the inner heating device 82 of the second heating device is located on the second chamber mold 40 and corresponds to the second end of the partition sheet 20, the outer heating device 81 of the first heating device is located outside the outer tube 10 and corresponds to the first end of the partition sheet 20, and the outer heating device 81 of the second heating device is located outside the outer tube 10 and corresponds to the second end of the partition sheet 20. By heating the inner part and the outer part together, a better heating effect can be achieved.

In the present embodiment, the first chamber mold 30 is provided with a groove at a position corresponding to the overlapped junction of the outer tube 10 and the first end of the partition sheet 20, the second chamber mold 40 is provided with a groove at a position corresponding to the overlapped junction of the outer tube 10 and the second end of the partition sheet 20, the inner heating device 82 of the first heating device is disposed in the groove of the first chamber mold 30, and the inner heating device 82 of the second heating device is disposed in the groove of the second chamber mold 40. The inner heating device is arranged in the groove, so that the influence of the inner heating device on the outer pipe forming can be reduced.

In addition, further, the inner heating device 82 and the outer heating device 81 are respectively provided with heating surfaces which are in contact with overlapped junctions of both ends of the outer tube 10 and the partition sheet 20, the heating surfaces heat and pressurize the overlapped junctions of both ends of the outer tube 10 and the partition sheet 20, and the heating surfaces of the inner heating device 82 are flush with the surfaces of the first cavity mold 30 and the second cavity mold 40. The heating surfaces contacted with the overlapped joints of the two ends of the outer tube and the separation sheet are used for heating and pressurizing the overlapped joints of the two ends of the outer tube and the separation sheet at the same time, so that the installation space is saved, and the cost is reduced. Moreover, the heating surface of the inner heating device is flush with the surfaces of the first cavity die and the second cavity die, so that the influence of the inner heating device on the outer tube forming can be avoided.

Specifically, the heating device 80 is a high-frequency heater or a resistance heater.

In the present embodiment, the first molding die 50 and the second molding die 60 are molding rollers, and the outer peripheral surfaces of the molding rollers are arc-shaped concave surfaces 70. The outer pipe is extruded from the outside by the arc concave surface of the forming roller, so that the outer pipe keeps the shape.

Referring to fig. 1 and 4, the present invention further provides a pipe, which includes the dual-chamber pipe described above, and further includes an integrally formed pipe joint 90, where the pipe joint 90 includes a neck section 91 and a connecting section 92, a partition plate 93 is disposed in the pipe joint 90, the partition plate 93 partitions the interior of the pipe joint 90 into two chambers with equal cross-sectional areas, a free end of the connecting section 92 is fixedly connected with one end of the dual-chamber pipe in a butt joint manner, and the cross-sectional shapes of the chambers of the pipe joint 90 are the same as the cross-sectional shapes of the chambers of the dual-chamber pipe and are in one-to-one butt joint.

In this embodiment, the pipe joint is arranged on the double-chamber pipe, so that the double-chamber pipe is convenient to connect with the outside, and the application range of the double-chamber pipe is improved.

In this embodiment, the connecting section 92 is a tapered tube, the small end of the connecting section 92 is connected to the neck section 91, and the large end of the connecting section 92 is fixedly connected to one end of the outer tube 10 of the dual-chamber tube in a butt joint manner.

In the present embodiment, the pipe joint 90 is integrally formed by injection molding. The pipe joint integrally formed by injection molding has high production efficiency and good forming.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.