CN216369696U - Heat exchange bamboo joint pipe forming process device - Google Patents

Abstract

The utility model provides a heat exchange bamboo joint pipe forming process device, which belongs to the technical field of heat exchanger cores and comprises two fixing devices, an upper die base, two positioning pins, two guide plates and a lower die base, wherein the two fixing devices are fixed on the upper die base, the two positioning pins are fixed on a forming surface of the lower die base, the two guide plates are respectively fixed on two sides of the lower die base and play a role in guiding the upper die base, each fixing device is provided with a pressing piece matched with a shaper, the lower die base is provided with an installation step surface matched with a flat jaw vice on the shaper, each guide plate is provided with a blank pipe placing groove, and the size of each blank pipe placing groove is matched with the pipe diameter of a bamboo joint pipe. The utility model has convenient operation, high production efficiency and ensured molding size and is used for the core body of the heat exchanger.

Description

Heat exchange bamboo joint pipe forming process device

Technical Field

The utility model relates to the technical field of heat exchanger cores, in particular to a heat exchange bamboo joint pipe forming process device.

Background

The heat exchange tube is a main heat exchange element in the heat exchanger, and because the space size of the heat exchanger on an airplane or an engine is very short, the only method for improving the heat radiation efficiency and the heat radiation capacity of the heat exchanger is to improve the heat exchange performance of the heat exchange element under the condition that the structural size of the heat exchanger cannot be increased.

In the related art, the strengthening measure of the heat exchange element is mainly to adopt bamboo joint forming on the heat exchange tube so as to promote the turbulence, the separation and the damage of a thermal resistance boundary layer of fluid. Therefore, the processing precision of the bamboo joint pipe directly influences the heat exchange performance of the heat exchanger.

However, the cold stamping method is always adopted for the bamboo joint forming of the heat exchange tube, the production efficiency is extremely low, the forming size is difficult to guarantee, and the die needs to be frequently overhauled. Along with the development trends of increasing the product requirements of the tube type heat radiator, updating and upgrading the product types and continuously improving the product quality, the production requirements of high quality and high efficiency are provided for the heat exchange tubes in the heat exchanger.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the related art, the utility model provides a heat exchange bamboo joint pipe forming process device, which adopts the following technical scheme:

the utility model provides a heat transfer bamboo joint pipe forming process units, includes: two fixing devices, an upper die holder, two positioning pins, two guide plates and a lower die holder,

wherein, the two fixing devices are fixed on the upper die base, the two positioning pins are fixed on the molding surface of the lower die base, the two guide plates are respectively fixed on the two sides of the lower die base and play a role of guiding the upper die base,

every fixing device is equipped with and compresses tightly the piece with the ox head planer assorted, and the die holder is equipped with and the last parallel jaw assorted installation step face of ox head planer, is equipped with blank pipe standing groove on every deflector, and the size of blank pipe standing groove matches with the pipe diameter of bamboo joint pipe.

Wherein, the upper die base is equipped with location pinhole and screw hole for install fixing device.

And two positioning holes are formed in the forming surface of the lower die base corresponding to the blank tube placing grooves and used for fixing the two positioning pins.

Wherein, the lower die holder is provided with a slope angle of 0.14 +/-5' within the preset rolling size range.

Wherein the preset rolling size is 256-300 mm.

Wherein, the compressing part is a screw.

Wherein, the width of the blank tube placing groove is 4-6 mm.

Compared with the traditional cold stamping forming process, the forming process equipment has the characteristics of convenience in operation, high qualification rate, high production efficiency, strong stability and the like, is particularly effective for mass production, and has the most remarkable economic benefit.

Drawings

FIG. 1 is a schematic structural view of a heat exchange bamboo joint pipe forming process device provided by the utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cutaway schematic view of FIG. 1;

fig. 4 is a schematic structural view of a pipe joint in the related art.

The device comprises a fixing device 1, an upper die holder 2, a positioning pin 3, a guide plate 4 and a lower die holder 5.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples:

as shown in fig. 1 to 3, the present invention provides a heat exchange bamboo joint pipe forming process apparatus, comprising: two fixing devices 1, an upper die base 2, two positioning pins 3, two guide plates 4 and a lower die base 5,

wherein, two fixing devices 1 are fixed on an upper die holder 2, two positioning pins 3 are fixed on a molding surface of a lower die holder 5, two guide plates 4 are respectively fixed on two sides of the lower die holder 5 and play a role of guiding the upper die holder 2,

every fixing device 1 is equipped with and compresses tightly the piece with the ox head planer assorted, and die holder 5 is equipped with and the last parallel jaw assorted installation step face of ox head planer, is equipped with blank pipe standing groove on every deflector 4, and the size of blank pipe standing groove matches with the pipe diameter of bamboo joint pipe.

Wherein, the upper die base 2 is provided with a positioning pin hole and a screw hole for installing the fixing device 1.

Wherein, the forming surface of the lower die holder 5 is provided with two positioning holes corresponding to the blank tube placing grooves for fixing the two positioning pins 3.

Wherein, the lower die holder 5 is provided with a slope angle of 0.14 degrees +/-5' within the preset rolling size range. The method is used for uniformly rolling and forming the blank pipe within the preset size.

Wherein the preset rolling size is 256-300 mm.

Wherein, the pressing piece is a screw and is used for installing the upper die holder 2 on the tool rest of the shaper through the fixing device 1

The width of the blank pipe placing groove is 4-6 mm, and the blank pipe placing groove is used for placing blank pipes with different specifications.

The utility model designs a forming process device which realizes roll forming instead of cold punch forming through a shaper and performs bamboo joint forming on a heat exchange tube in a heat exchanger core so as to improve the forming quality and efficiency of the heat exchange tube.

Illustratively, the using process of the heat exchange bamboo joint pipe forming process device provided by the utility model comprises the following steps:

1. placing a phi 3.2 single blank pipe on the forming surface of the lower die holder through a 4mm placing groove on the guide plate, and positioning the blank pipe through two positioning pins, wherein the phi 3.2 bamboo joint pipe is shown in figure 4;

2. respectively measuring the parallelism of the upper die base forming surface and the lower die base reference surface relative to the workbench of the shaper, wherein the parallelism is less than or equal to 0.03;

3. respectively injecting oil to the molding surfaces of the upper die holder and the lower die holder of the die to lubricate the rolling molding surface of the product, and injecting oil to the side surface of the guide plate to ensure that the upper die holder slides in the guide plate;

4. starting the shaping machine, adjusting the gap between the upper die holder and the lower die holder molding surface by adjusting the displacement between the shaping machine workbench and the tool rest, and repeatedly adjusting and repeatedly rolling until the bamboo joint is molded;

5) the diameter size of the formed bamboo joint pipe is measured in real time through the through end and the stop end of the special plug gauge so as to reach the size of phi 1.32 mm.

The foregoing examples are given for the purpose of illustration only and are not to be construed as limiting the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description.

Claims (7)

1. A heat transfer bamboo joint pipe forming process device is characterized by comprising the following steps: two fixing devices (1), an upper die base (2), two positioning pins (3), two guide plates (4) and a lower die base (5),

wherein, the two fixing devices (1) are fixed on the upper die holder (2), the two positioning pins (3) are fixed on the molding surface of the lower die holder (5), the two guide plates (4) are respectively fixed on the two sides of the lower die holder (5) and play a role of guiding the upper die holder (2),

every fixing device (1) is equipped with and compresses tightly the piece with the ox head planer assorted, and die holder (5) are equipped with the last parallel jaw assorted installation step face of ox head planer, are equipped with blank pipe standing groove on every deflector (4), and the size of blank pipe standing groove matches with the pipe diameter of bamboo joint pipe.

2. The heat exchange bamboo joint pipe forming process device as claimed in claim 1, wherein the upper die holder (2) is provided with a positioning pin hole and a screw hole for installing the fixing device (1).

3. The heat exchange bamboo joint pipe forming process device as claimed in claim 1, wherein two positioning holes are formed in the forming surface of the lower die holder (5) at positions corresponding to the blank pipe placing grooves for fixing the two positioning pins (3).

4. The heat exchange bamboo joint pipe forming process device as claimed in claim 1, wherein the lower die holder (5) is provided with a slope angle of 0.14 ° ± 5' within a preset rolling size range.

5. The forming process device of the heat exchange bamboo joint pipe as claimed in claim 1, wherein the preset rolling size is 256 mm to 300 mm.

6. The heat exchange bamboo joint pipe forming process device as claimed in claim 1, wherein the pressing member is a screw.

7. The forming process device of the heat exchange bamboo joint pipe as claimed in claim 1,

the width of the blank tube placing groove is 4-6 mm.

Images