CN112792170B

CN112792170B - Preparation process of oil cooler pipe with reinforcing sheet outside

Info

Publication number: CN112792170B
Application number: CN202011639570.7A
Authority: CN
Inventors: 沈平; 黄乃玉; 韦佳; 梁立兴; 黄寿来; 黄新咏; 杨元豪; 麦云锋
Original assignee: Shenzhen Jiaheda Pipe Industry Co ltd
Current assignee: Shenzhen Jiaheda Pipe Industry Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-03-28
Anticipated expiration: 2040-12-31
Also published as: CN112792170A

Abstract

The invention discloses a preparation process of an oil cooler pipe with an external reinforcing sheet, which comprises the following steps: firstly, placing a pipe body sheet in a pipe body forming device to be pressed into a pipe body with raised lines on the upper side and the lower side, and simultaneously respectively feeding the sheet of the reinforcing sheet into an upper reinforcing sheet forming device and a lower reinforcing sheet forming device to be pressed and formed; then, the pipe body, the upper reinforcing sheet and the lower reinforcing sheet enter a clamping device at the same time, wherein the upper reinforcing sheet and the lower reinforcing sheet are positioned on the upper side and the lower side of the pipe body at the same time, and the upper reinforcing sheet and the lower reinforcing sheet are clamped on the upper side and the lower side of the pipe body after pressure is applied in the clamping device; and conveying the pipe body with the reinforcing sheet outside to a fin inserting machine, and inserting fins to obtain a finished oil cooler pipe. The invention provides a preparation process of an oil cooler pipe with an external reinforcing sheet, which can be used for preparing the oil cooler pipe in a full-automatic manner, and has the advantages of high manufacturing speed, high efficiency, high strength of the prepared pipe body and good application prospect.

Description

Preparation process of oil cooler pipe with reinforcing sheet outside

Technical Field

The invention relates to the technical field of production of automobile cooling pipes, in particular to a preparation process of an oil cooler pipe with a reinforcing plate.

Background

When an automobile runs, the temperature of the lubricating oil contained in the gear box is continuously increased due to the transmission of power, and if the temperature of the lubricating oil is too high, the lubricating oil may boil to lose the lubricating effect, so that the gear is easy to wear. In the existing automobile structure configuration, an oil cooler pipe is arranged for cooling lubricating oil, and the oil temperature is ensured to be within a normal working range.

The automobile oil cooler in the prior art comprises an oil cooler pipe body, wherein the oil cooler pipe body is provided with an inner double-layer pipe wall and an outer double-layer pipe wall, the pipe ends of the inner double-layer pipe wall and the outer double-layer pipe wall are sealed and sealed, an oil passing cavity is defined in the middle of the inner double-layer pipe wall and the outer double-layer pipe wall, one end of the outer pipe wall of the oil cooler pipe body is provided with an oil inlet, the other end of the outer pipe wall of the oil cooler pipe body is provided with an oil outlet, oil inlet and outlet ports are communicated with the oil passing cavity, and an inner hole and an outer wall of the oil cooler pipe body are in contact with cooling water when engine oil is cooled. However, the cooling area of the pipe body is limited, and a better oil cooling effect cannot be achieved. Secondly, when assembling the oil cooler body into the oil cooler, because structural design is unreasonable, lead to welding strength not enough for the operating pressure that the during operation can bear of oil cooling body is less, and the pressure intensity of oil cooling body business turn over end is also relatively weak, can not satisfy operation requirement. Therefore, the application strength of the pipe body of the oil cooler is enhanced, and the key for improving the performance of the oil cooler is realized. The strength of the existing oil cooling pipe is increased by inserting the reinforcing sheet into the pipe body, but the reinforcing sheet is required to be manually manufactured by inserting the reinforcing sheet into the oil cooling pipe, so that the working efficiency is low, and the production and manufacturing are slow, so that the preparation method of the oil cooling pipe capable of solving the problems is found.

Disclosure of Invention

The invention aims to provide a preparation process of an oil cooler pipe with an external reinforcing sheet, the oil cooler pipe has high strength, simple manufacture, full-automatic processing and manufacture, high manufacture speed and high efficiency, meets the working requirements of the existing oil cooler, and solves the problems of the background art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a preparation process of an oil cooler pipe with an external reinforcing sheet comprises the following steps:

(1) Forming a pipe body: firstly, placing a pipe body sheet material in a pipe body forming device, pressing a raised line, slowly pressing the pipe body sheet material into a pipe body with the raised line on the upper side and the lower side through a driving roller, and horizontally conveying the pipe body sheet material into a clamping device after the pipe body is formed;

(2) And (3) forming a reinforcing sheet: respectively pressing the sheet materials of the reinforcing sheet into an upper reinforcing sheet forming device and a lower reinforcing sheet forming device to form an arc-shaped upper reinforcing sheet and an arc-shaped lower reinforcing sheet while forming the pipe body, and simultaneously conveying the upper reinforcing sheet and the lower reinforcing sheet to a clamping device;

(3) Clamping and forming: simultaneously feeding the pipe body manufactured in the step (1) and the upper reinforcing sheet and the lower reinforcing sheet manufactured in the step (2) into a clamping device, wherein the upper reinforcing sheet and the lower reinforcing sheet are simultaneously positioned on the upper side and the lower side of the pipe body, the openings of the upper reinforcing sheet and the lower reinforcing sheet face the pipe body, after pressure is applied in the clamping device, clamping the upper reinforcing sheet and the lower reinforcing sheet on the upper side and the lower side of the pipe body, conveying the pipe body out of the clamping device, and then cutting off the pipe body to obtain the pipe body with the reinforcing sheets outside;

(4) Inserting fins: and conveying the pipe body with the reinforcing sheet outside to a fin inserting machine, and inserting fins to obtain a finished oil cooler pipe.

Furthermore, a plurality of groups of tube body forming rollers are arranged in the tube body forming device, each tube body forming roller is formed by combining an upper roller and a lower roller, a pressing groove which is sunken downwards is formed in the center of each tube body forming roller, a convex strip of each tube body is pressed out of the center line of a sheet of each tube body, a half of the convex strip is pressed out of two sides of each sheet, the sheets are combined to form a complete convex strip, the tube body forming rollers which are arranged side by side in the middle are arranged from the horizontal direction to the V shape along a conveying direction die, the V-shaped included angle is gradually reduced to press the sheets into tube bodies with convex strips on the upper side and the lower side, and the sheets in the last roller pass through the tube body forming rollers to form the final shape of the tube bodies.

Furthermore, a plurality of groups of upper reinforcing sheet forming rollers arranged on the upper reinforcing sheet forming device are driving rollers which are meshed up and down, arc-shaped meshing grooves which are sunken downwards are formed in the center lines of the upper reinforcing sheet forming rollers, and the radian of the meshing grooves in the upper reinforcing sheet forming rollers which are arranged side by side is increased towards the driving direction in sequence.

Furthermore, a lower reinforcing sheet forming roller and meshing grooves in opposite directions are arranged in the lower reinforcing sheet forming device, and other structures are consistent with those of the upper reinforcing sheet forming device.

Furthermore, a plurality of groups of clamping rollers are arranged in the clamping device, the clamping rollers are formed by matching an upper roller and a lower roller, and an upper reinforcing sheet and a lower reinforcing sheet are respectively fixed on the upper raised line and the lower raised line of the pipe body.

Further, the body among the oil cooler union coupling finished product is flat body, and the both sides of this body all are equipped with circular-arc sand grip, the outside of sand grip is hugged closely and is stamped circular-arc reinforcement piece, and the lateral surface of this reinforcement piece links up with the upper and lower two sides of body is level and smooth, be equipped with the fin in the body, this fin is the broken line setting and forms the disturbed flow groove of a plurality of notch staggered distribution.

According to the preparation process of the oil cooler pipe with the reinforcing plate, the technical effects are as follows:

1. the oil cooler pipe prepared by the preparation process is characterized in that a sheet material is integrally bent into a pipe body with convex strips on two sides, reinforcing sheets tightly attached to the convex strips are arranged on the outer sides of the convex strips, and the reinforcing sheets are directly clamped and fixed on the outer sides of the convex strips and are smoothly connected with the outer edge surfaces of the pipe body. The reinforcing sheet is additionally arranged on the outer side of the pipe body, the thickness of the side wall is increased, the strength of the outer pipe body is guaranteed under the condition that the width of the outer pipe body is unchanged and the thickness of the outer pipe body is smaller, and when the oil cooler pipe is assembled into an oil cooler, the working pressure can be higher, the pressure strength of the inlet end and the outlet end of the pipe is guaranteed, and lubricating oil can smoothly flow into and flow out of the pipe. The invention also reduces the manufacturing materials of the whole pipe body, reduces the weight of the pipe body, is beneficial to reducing the whole weight of the oil cooler and saves the production cost.

2. The inner fins are arranged in the tube body, and the inner fins are provided with the trapezoidal turbulent flow grooves which are staggered up and down, so that the heat exchange area in the tube is increased, the turbulence in the tube is enhanced, and the heat exchange efficiency in the tube is ensured; the using amount of the oil cooler pipe is reduced under the condition of ensuring the same heat exchange effect, the material is saved, and the production cost is reduced.

3. The two side surfaces of the turbulence grooves of the fins are arranged in the tube body, and the plurality of concave points and the plurality of convex points are uniformly arranged along the axial direction of the turbulence grooves at intervals, so that turbulence can be increased, the surface area of the inner fins can be increased, the improvement of the surface area is equivalent to further improvement of the turbulence degree in the tube, and the cooling area can be increased, and therefore a better lubricating oil cooling effect can be realized.

4. The process adopts mechanical equipment for full-automatic processing, the reinforcing sheet is fixed on the outer side of the pipe body, the external shape of the pipe body is unchanged with the traditional oil cooling pipe, the processing efficiency is improved while the traditional oil cooling pipe is low in weight, materials are saved, the strength is high, the reinforcing sheet is clamped and fixed on the outer side, the reinforcing sheet can be directly formed on an automatic production line, manual operation is not needed, and the manufacturing efficiency of the oil cooling pipe is greatly improved.

5. According to the invention, after the sheet is processed into a required shape by the pipe body forming device, the upper reinforcing sheet forming device and the lower reinforcing sheet forming device, the sheet is conveyed into the clamping device together through three routes, so that the upper reinforcing sheet and the lower reinforcing sheet are respectively positioned above and below the pipe body, and then the clamping device directly clamps the sheet to form the pipe body.

Generally, the process has high manufacturing speed, and the prepared pipe bodies have consistent shapes and quality, thereby being convenient for industrial production.

Drawings

FIG. 1 is a schematic view of the overall structure of an oil cooler tube according to the present invention;

FIG. 2 is a cross-sectional view of the oil cooler tube of the present invention;

FIG. 3 is a schematic view showing the construction of an apparatus for producing an oil cooler tube according to the present invention;

FIG. 4 is a schematic view illustrating the tube body of the oil cooler of the present invention being formed;

FIG. 5 is a schematic structural view of an apparatus for forming a reinforcing plate of an oil cooler pipe according to the present invention;

FIG. 6 is a schematic structural view of an oil cooler tube of comparative example 1;

FIG. 7 is a schematic structural view of an oil cooler tube of comparative example 2;

FIG. 8 is a schematic view showing the shape change of the oil cooler tube body during processing according to the present invention;

FIG. 9 is a schematic perspective view of an apparatus for forming a tube reinforcement plate of an oil cooler according to the present invention;

in the drawing, a tube body 101, ribs 102, reinforcing plates 103, fins 104, turbulators 105, a tube body forming device 201, an upper reinforcing plate forming device 202, a lower reinforcing plate forming device 203, a clamping device 204, a tube body forming roller 205, an upper reinforcing plate forming roller 206, a lower reinforcing plate forming roller 207, a lower reinforcing plate 208, an upper reinforcing plate 209, an upper roller 210, a lower roller 211, and a clamping roller 212.

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.

Example 1

As shown in fig. 1, an oil cooler pipe with reinforcing plates outside includes a pipe body 101, the pipe body 101 is a flat pipe body, circular arc-shaped protruding strips 102 are arranged on both sides of the pipe body 101, the outer sides of the protruding strips 102 are tightly covered with circular arc-shaped reinforcing plates 103, the outer side surfaces of the reinforcing plates 103 are smoothly connected with the upper surface and the lower surface of the pipe body 101, fins 104 are arranged in the pipe body 101, the fins 104 are arranged in a broken line to form a plurality of turbulence grooves 105 with notches distributed in a staggered manner, the bearing capacity of the pipe body 101 can be increased by increasing the reinforcing plates 103, the reinforcing plates 103 are arranged outside the pipe body 101 to facilitate full-automatic processing and combination by using mechanical equipment, the manufacturing efficiency is improved, the manufactured oil cooler pipe is integrally bent from a sheet material into the pipe body 101 with protruding strips on both sides, the reinforcing plates tightly attached to the protruding strips are arranged outside the protruding strips 102, the reinforcing plates are directly clamped and fixed outside the protruding strips and smoothly connected with the outer edge surfaces of the pipe body, and the structure is simple. The reinforcing sheet 103 is additionally arranged on the outer side of the pipe body 101, the thickness of the side wall is increased, the strength of the pipe body 101 is guaranteed under the condition that the width of the pipe body 101 is unchanged and the thickness of the pipe body is smaller, and when the oil cooler pipe is assembled into an oil cooler, the pipe can bear larger working pressure, and the pressure strength of the inlet end and the outlet end of the pipe is guaranteed, so that lubricating oil smoothly flows in and out. The whole pipe body is thin, manufacturing materials of the whole pipe body are reduced, the weight of the pipe body is reduced, the whole weight of the oil cooler is favorably reduced, and production cost is saved.

The reinforcing sheet 103 is directly clamped outside the convex strip 102, and the length of the reinforcing sheet 103 is consistent with that of the pipe body 101; the cross sections of the convex strips 102 and the reinforcing sheet 103 are semicircular, the inner diameter of the reinforcing sheet 103 is equal to the width of the inner wall of the pipe body 101, the thickness of the material of the reinforcing sheet 103 is 0.5mm, and the reinforcing sheet 103 is added under the condition that the whole volume of the pipe body 101 is not changed so as to increase the strength of the oil cooler pipe.

The cross section of the pipe body 101 is 100mm long and 10mm wide; body 101 is by a sheet integrated into one piece, and the interface of body 101 is located the centre of one of them sand grip, the simple structure of whole body, and the interface is located the centre of sand grip 102, uses curved reinforcement piece 103 to cover after the welding again, is favorable to increasing the intensity of whole reinforcement piece, is equivalent to with reinforcing piece 103 to consolidate and cliies the interface, increases the compressive strength of interface.

The fins 104 are arranged in the pipe body 101 in a zigzag shape, and the axial turbulence grooves 105 of the pipe body 101 are distributed in a left-right staggered manner along the axial direction; the fins 104 are fixed in the tube body 101, the upper and lower surfaces of the fins are respectively tightly attached to the inner wall of the tube body 101 to fill the tube body, and the length of the whole fin is consistent with that of the tube body. The width of the bottom of the turbulent flow groove is 3mm, the included angle between the two side walls of the turbulent flow groove 105 is 5 degrees, the trapezoidal turbulent flow grooves 105 which are staggered up and down are arranged on the fins in the pipe body 101, the heat exchange area in the pipe is increased, meanwhile, the turbulence in the pipe is enhanced, and the heat exchange efficiency in the pipe is ensured; the using amount of the oil cooler pipe is reduced under the condition of ensuring the same heat exchange effect, the material is saved, and the production cost is reduced. Still can evenly set up a plurality of concave points and a plurality of bump along vortex groove 105 axial interval at vortex groove both sides face of fin 104, can slow down the lubricating oil velocity of flow, increase the surface area of interior fin, and surface area's improvement is just equivalent to further improving intraductal turbulent flow degree, increases cooling area to can realize better lubricating oil cooling effect.

The preparation equipment of the oil cooler pipe comprises the following steps:

as shown in fig. 3, 4 and 5, an apparatus for manufacturing an oil cooler pipe with external reinforcing sheet comprises a pipe forming device 201, an upper reinforcing sheet forming device 202, a lower reinforcing sheet forming device 203 and a clamping device 204, wherein the pipe forming device 201 and the clamping device 204 are arranged at a certain distance, the upper reinforcing sheet forming device 202 and the lower reinforcing sheet forming device 203 are respectively arranged at two sides of a connecting line of the pipe forming device 201 and the clamping device 204, a plurality of pipe forming rollers 205 are arranged in the pipe forming device 201 side by side, a mold in the side by side pipe forming rollers 205 is arranged from horizontal to V-shaped along a conveying direction, an included angle of the V-shaped gradually reduces to press a sheet into a pipe body 101 with convex strips at the upper side and the lower side, a plurality of groups of upper reinforcing sheet forming devices 206 are arranged in the upper reinforcing sheet forming device 202, the sheet material of the reinforcing plate 103 is gradually pressed into an arc shape with an opening facing downwards from the horizontal direction, a lower reinforcing plate forming roller 207 is arranged in the lower reinforcing plate forming device 203, the direction of a mold in the lower reinforcing plate forming roller 207 is opposite to that of an upper reinforcing plate forming roller 206, other structures are consistent, an arc-shaped lower reinforcing plate 208 with an opening facing upwards is pressed through the lower reinforcing plate forming roller 207, the pipe body 101 is horizontally conveyed to the middle of the mold of the clamping device 204, the upper reinforcing plate 209 is conveyed to the middle of the clamping device and is positioned right above the pipe body 101, the lower reinforcing plate 208 is conveyed to the middle of the clamping device 204 and is positioned right below the pipe body 101, when the pipe body 101, the upper reinforcing plate 209 and the lower reinforcing plate 208 simultaneously penetrate through the clamping device, the upper reinforcing plate 209 and the lower reinforcing plate 208 are clamped outside the pipe body 101 in a clinging mode, and a cutting machine is arranged at the outlet end of the clamping device 204. This preparation equipment adopts body forming device 201, goes up reinforcement piece forming device 202, adds reinforcement piece forming device 203 down and sends to clamping device 204 together in three route, makes and adds reinforcement piece 209 and adds reinforcement piece 208 below being located the upper and lower of body 101 respectively down, then clamping device 204 directly presss from both sides tightly, makes the shaping of body 101, and whole process is whole automatic molding, and the preparation is fast, and the body highly uniform of preparation does benefit to the preparation of later stage oil cooler.

The tube body forming roller 201, the upper reinforcing sheet forming roller 202, the lower reinforcing sheet forming roller 203 and the clamping device 204 are respectively provided with an upper roller 210 and a lower roller 211, the tube body sheet is driven by the relative rotation between the upper roller 210 and the lower roller 211, the sheet is pressed into a required shape by a die formed by matching the middle of the upper roller 210 and the lower roller 211 while the transmission is carried out, the tube body forming roller 205, the upper reinforcing sheet forming roller 206 and the lower reinforcing sheet forming roller 207 are respectively provided with a plurality of groups, the dies among the groups are in a gradual change state, and the sheet is gradually pressed and bent into the tube body 101 with the reinforcing sheet. For example, the first tube forming roller first presses a convex strip on a sheet, the second tube forming roller bends the sheet on both sides of the convex strip upwards by a certain angle to form a V-shape, the second tube forming roller bends upwards by a certain angle to gradually reduce the angle of the V-shape, and finally, the tube 101 connected with the upper end to form another convex strip is formed.

The tube forming roller 205 is formed by combining an upper roller and a lower roller, a pressing groove which is concave downwards is arranged at the center of the tube forming roller, a convex strip 102 of the tube is pressed on the center line of a sheet of the tube, a half of the convex strip is pressed on two side edges of the sheet, the sheet is combined to form a complete convex strip 102, the sheet in the last roller of the tube forming roller 205 penetrates through the sheet to form the final shape of the tube, the tube is a flat tube, and the two sides of the tube are both provided with arc-shaped convex strips 102. The operation of pressing the ribs 102 on the sheet is easy, and the tube body with the ribs 102 can be directly formed by rolling the sheet into the tube body.

The plurality of groups of upper reinforcing sheet forming rollers 206 arranged on the upper reinforcing sheet forming device 202 are driving rollers which are meshed up and down, arc-shaped pressing grooves which are sunken downwards are arranged at the central line of the upper reinforcing sheet forming rollers 206, and the radian of the pressing grooves in the upper reinforcing sheet forming rollers 206 which are arranged side by side is sequentially increased towards the driving direction; the upper reinforcing sheet forming rollers 206 are provided with 3-5 groups, and a plurality of groups of upper reinforcing sheet forming rollers 206 are arranged to press and form the pipe body in one step, so that the pipe body is gradually deformed and is not easy to damage.

The lower reinforcing sheet forming device 207 is provided therein with lower reinforcing sheet forming rollers 207 and press-fitting grooves in opposite directions, and the other structure is identical to that of the upper reinforcing sheet forming device 202.

The clamping device 204 is provided with a plurality of sets of clamping rollers 212, which are formed by the cooperation of upper and lower rollers, and the upper reinforcing plate 209 and the lower reinforcing plate 208 are respectively fixed on the upper and lower raised strips of the tube body. The clamping device 204 controls the pressurization through a control system, which is the prior art and can arrange a plurality of groups of clamping rollers side by side to gradually increase the applied pressure and gradually clamp.

The preparation process for preparing the oil cooler pipe by using the equipment comprises the following steps:

the preparation process of the oil cooler pipe with the reinforcing sheet comprises the following steps:

(1) Forming a pipe body: firstly, placing a pipe body sheet material in a pipe body forming device 203, pressing convex strips, slowly pressing the pipe body sheet material into a pipe body 101 with convex strips on the upper side and the lower side through a driving roller, and horizontally conveying the pipe body sheet material into a clamping device after the pipe body sheet material is formed;

(2) And (3) forming a reinforcing sheet: feeding the sheet material of the reinforcing sheet into the upper reinforcing sheet forming device 202 and the lower reinforcing sheet forming device 203 respectively while forming the pipe body, pressing the sheet material into an arc-shaped upper reinforcing sheet 209 and an arc-shaped lower reinforcing sheet 208, and simultaneously conveying the upper reinforcing sheet 209 and the lower reinforcing sheet 208 into the clamping device 204;

(3) Clamping and forming: simultaneously feeding the pipe body 101 manufactured in the step (1) and the upper reinforcing sheet 209 and the lower reinforcing sheet 208 manufactured in the step (2) into a clamping device 204, wherein the upper reinforcing sheet 209 and the lower reinforcing sheet 208 are positioned on the upper side and the lower side of the pipe body, openings of the upper reinforcing sheet 209 and the lower reinforcing sheet 208 face the pipe body, clamping the upper reinforcing sheet 209 and the lower reinforcing sheet 208 on the upper side and the lower side of the pipe body after applying pressure in the clamping device 204, and cutting the pipe body after conveying the pipe body out of the clamping device to obtain the pipe body with the reinforcing sheets outside;

(4) Inserting fins: and conveying the pipe body with the reinforcing sheet outside to a fin inserting machine, and inserting the fins 104 to obtain a finished oil cooler pipe product, wherein the fin inserting machine is an existing machine and is not described herein any more.

Example 2

In the embodiment, the thickness of the material of the reinforcing sheet is 0.5mm, wherein the width of the bottom of the turbulent flow groove is 2.0mm, the included angle of the two side walls of the turbulent flow groove is 4 degrees, the length of the cross section of the pipe body is 30mm, and the width of the cross section of the pipe body is 4mm; other implementations are consistent with example 1.

Example 3

In the embodiment, the thickness of the material of the reinforcing plate is 0.5mm, wherein the width of the bottom of the turbulent flow groove is 3.5mm, the included angle between the two side walls of the turbulent flow groove is 8 degrees, the cross section of the pipe body is 300mm in length and 20mm in width; other implementations are consistent with example 1.

Comparative example 1

As shown in fig. 6, for the existing oil cooler, the oil cooler is formed by welding the reinforcing strips and the upper and lower protective plates on two sides of the heat dissipation strip, i.e. the independent sheet body and the heat dissipation strip are welded together, so that the oil cooler has the problems of multiple welding seams, complex structure, complex production process, low efficiency, easy leakage and deformation in the using process and the like.

Comparative example 2

As shown in fig. 7, another conventional oil cooler tube includes a tube body 101, wherein the thickness of the tube body 101 is 2.0mm, and the width of the tube body 101 is 10.0mm; the inner walls of two sides of the pipe body 101 are respectively provided with 1 reinforcing sheet 103 with the thickness of 0.5mm, and fins 104 are arranged between the 2 reinforcing sheets 103; fin 104 radially sets up for the dogleg shape along it, forms the vortex groove 105 of a plurality of notch crisscross distributions from top to bottom, the cross section in vortex groove 105 is narrow trapezoidal under last wide, fin 105 sets up for the dogleg shape along its axial, makes its axial vortex groove 105 along its axial left and right sides crisscross distribution, the tank bottom width in vortex groove 105 is 3.25mm, and the contained angle in vortex groove 105 both sides wall is 4. The actual number of turbulence grooves 105 depends on the width of the bottom of the turbulence grooves 105 and the width of the tubular body 101. The fins 104 are consistent with the fins in the embodiments 1-3, the oil cooler pipe is high in strength, the problem in the comparative example 1 can be solved, the integrally formed pipe body is directly used for adding the reinforcing strips and the fins, the size is greatly reduced, the material is light and convenient, bending is easy to achieve in production, the processing time is greatly saved, the production efficiency is high, the overall strength of the pipe body is high, leakage is not easy to occur in the using process, and due to the fact that the reinforcing sheets are inserted into the pipe, manual insertion is needed, the manufacturing speed is low, the efficiency is low, and large-scale production is difficult.

The changes in the performance of the oil coolers made from the oil cooler tubes of example 1, the oil coolers made from the oil cooler tubes of comparative example 1 and the oil coolers made from the oil cooler tubes of comparative example 2, and the changes in the performance of the oil coolers of comparative example 1 and comparative example 2 relative to the oil coolers made from the oil cooler tubes of example 4 are shown in table 1.

The oil cooler prepared by the oil cooler pipe has strong static pressure resistance and thermal shock resistance compared with the oil cooler prepared by the existing pipe on the market, the production speed is greatly increased, the full-automatic production is realized, and the manpower and material resources are reduced.

It should be noted that, although the present invention has been described in detail with reference to the foregoing embodiments, the technical solutions described in the foregoing embodiments or some technical features of the present invention may be modified or replaced equivalently by those skilled in the art, and any modifications, equivalents, improvements and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A preparation process of an oil cooler pipe with an external reinforcing sheet is characterized by comprising the following steps:

(1) Forming a pipe body: firstly, placing a tube sheet in a tube forming device, pressing to form convex strips, slowly pressing to form a tube with the convex strips on the upper side and the lower side through a driving roller, and horizontally conveying the formed tube to a clamping device;

(2) And (3) forming a reinforcing sheet: the forming method comprises the following steps that during pipe body forming, sheets of reinforcing plates respectively enter an upper reinforcing plate forming device and a lower reinforcing plate forming device to be pressed into an arc-shaped upper reinforcing plate and an arc-shaped lower reinforcing plate, and the upper reinforcing plate and the lower reinforcing plate are simultaneously conveyed to a clamping device, wherein a plurality of groups of upper reinforcing plate forming rollers arranged on the upper reinforcing plate forming device are driving rollers which are meshed up and down, arc-shaped meshing grooves which are sunken downwards are formed in the middle lines of the upper reinforcing plate forming rollers, radian of the meshing grooves in the upper reinforcing plate forming rollers which are arranged side by side is sequentially increased towards the driving direction, lower reinforcing plate forming rollers are arranged in the lower reinforcing plate forming device and are provided with meshing grooves in opposite directions, and other structures are consistent with the structures of the upper reinforcing plate forming devices;

2. The preparation process of the oil cooler pipe with the reinforcing sheet outside according to claim 1, characterized in that: the pipe forming device is characterized in that a plurality of groups of pipe forming rollers are arranged in the pipe forming device, each pipe forming roller is formed by combining an upper roller and a lower roller, a pressing groove which is sunken downwards is formed in the center of each pipe forming roller, a protruding strip of the pipe is pressed out of the center line of a sheet of the pipe, a half of the protruding strip is pressed out of two sides of the sheet, the sheet forms a complete protruding strip after being combined, a die is arranged in the pipe forming rollers side by side in the middle from the horizontal direction to the V shape along the conveying direction, the included angle of the V shape is gradually reduced to press the sheet into the pipe with the protruding strips on the upper side and the lower side, the pipe forming rollers are arranged in the middle, and the sheet in the last roller penetrates through the last roller to form the final shape of the pipe.

3. The preparation process of the oil cooler pipe with the reinforcing plate outside according to claim 1, wherein the preparation process comprises the following steps: the clamping device is provided with a plurality of groups of clamping rollers which are formed by matching an upper roller and a lower roller, and the upper reinforcing sheet and the lower reinforcing sheet are respectively fixed on the upper raised line and the lower raised line of the pipe body.

4. The preparation process of the oil cooler pipe with the reinforcing plate outside according to claim 1, wherein the preparation process comprises the following steps: the body in the oil cooler manages the finished product is flat body, and the both sides of this body all are equipped with circular-arc sand grip, the outside of sand grip is hugged closely and is stamped circular-arc reinforcement piece, and the lateral surface of this reinforcement piece links up with the upper and lower two sides level and smooth of body, be equipped with the fin in the body, this fin is the broken line setting and forms the disturbed chute of a plurality of notch staggered distribution.