A method and apparatus for manufacturing a porous pipe

Abstract

This invention discloses a method and equipment for manufacturing porous pipes. The method includes: 1. Determining the diameter of the holes in the cross-section of the porous pipe to be processed; 2. Classifying holes with diameters greater than 4mm as Class I holes and holes with diameters less than 4mm as Class II holes; 3. Selecting a module corresponding to the production of Class I holes, with an extruder and module working together to extrude and produce semi-finished pipes with Class I holes, which are then fed into a fixed-length saw for fixed-length sawing to obtain semi-finished pipe segments; 4. Drilling the semi-finished pipe segments using a horizontal drilling machine to obtain Class II holes; 5. Trimming the semi-finished pipe segments after processing the Class II holes to obtain the finished pipe. This application selects different manufacturing methods based on the diameter of the holes in the profile, changing the existing single extrusion process to a two-step process of extrusion followed by drilling, thus solving the problems of easy mold damage during the extrusion process for small holes, as well as the unevenness and slow extrusion speed.

Description

Technical fields:

[0001] This invention relates to the aluminum product processing industry, and in particular to a method and equipment for manufacturing porous tubes. Background technology:

[0002] In the extrusion production of aluminum profiles, hollow section products have high costs and mold costs, and some sections are difficult to complete through extrusion processing, and even if they can be processed, the production cost will be too high.

[0003] For example, holes with a diameter of no more than 4mm on the profile cross-section correspond to smaller mold diameters, lower strength, and are easily damaged. Mold repair is difficult, and they often cannot be produced continuously and stably for a long period of time, resulting in low production efficiency and significantly increased costs. Summary of the Invention:

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and improve the asymmetrical and unbalanced cross section into a symmetrical and balanced cross section by combining multiple extrusion dies, so as to facilitate the flow of metal and thus increase the extrusion speed, and realize the production of multiple profiles in one extrusion, thereby improving production efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: The technical solution of the present invention is a method for manufacturing porous pipes, the specific steps of which are as follows:

[0006] Step 1: Determine the diameter of the holes on the cross-section of the porous pipe to be processed;

[0007] Step 2: Determine whether the diameter of the hole is greater than 4mm, and classify holes with a diameter greater than 4mm as Class 1 holes and holes with a diameter less than 4mm as Class 2 holes;

[0008] Step 3: Select the module corresponding to the production of type I holes, and the extruder cooperates with the module to perform extrusion production to obtain a semi-finished pipe with type I holes. The semi-finished pipe is then sent to a fixed-length saw for fixed-length sawing to obtain a semi-finished pipe section.

[0009] Step 4: The semi-finished pipe section is drilled using a horizontal drilling machine to obtain the second type of hole;

[0010] Step 5: After the semi-finished pipe section with the second type of hole is processed, it is trimmed to obtain the finished pipe.

[0011] Furthermore, the axis of the hole in the pipe is parallel to the axis of the pipe.

[0012] Furthermore, the number of holes on the pipe is two, three, or four.

[0013] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: The technical solution of the present invention is a porous pipe manufacturing equipment, characterized in that it includes an extruder, a module, a fixed-length saw, and a horizontal drilling machine. The module is disposed inside the extruder, the fixed-length saw is disposed at the discharge end of the extruder, the horizontal drilling machine is disposed at the discharge end of the fixed-length saw, and a conveyor belt is disposed between the extruder, the fixed-length saw, and the horizontal drilling machine.

[0014] The beneficial effects of this invention are as follows: the holes in the profile that were originally no larger than 4mm in the drawings are adjusted to solid areas, and then the corresponding molds are remade and extrusion production is carried out on the original extrusion press; then a horizontal drilling machine is added to the rear end of the fixed-length sawing machine, and drilling is carried out after fixed-length sawing. Different manufacturing methods are selected according to the diameter of the holes in the profile. The tube is made by combining the two manufacturing methods, which solves the problems of easy mold damage, uneven extrusion process and slow extrusion speed in the extrusion manufacturing process of small holes.

[0015] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached image description:

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one of the drawings in this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart of a method for manufacturing porous pipes.

[0018] Figure 2 This is a schematic diagram of a porous pipe manufacturing equipment.

[0019] Figure 3 This is a cross-sectional view of the semi-finished pipe.

[0020] Figure 4 This is a cross-sectional view of the finished pipe.

[0021] In the diagram, 1-extrusion press, 2-module, 3-short-length saw, 4-horizontal drilling machine, 5-conveyor belt; A-pipe, A1-class hole, A2-class hole. Detailed implementation method:

[0022] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. While some embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the invention. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention.

[0023] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0024] The names of the messages or information exchanged between the multiple devices in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0025] Example

[0026] like Figure 1-4 As shown, this application discloses a porous pipe manufacturing equipment, including an extruder, a module, a fixed-length saw, and a horizontal drilling machine. The module is disposed inside the extruder, the fixed-length saw is disposed at the discharge end of the extruder, and the horizontal drilling machine is disposed at the discharge end of the fixed-length saw. A conveyor belt is provided between the extruder, the fixed-length saw, and the horizontal drilling machine.

[0027] The method for manufacturing porous pipes using this manufacturing equipment is as follows:

[0028] S1. Determine the diameter of the hole on the cross-section of the porous pipe to be processed;

[0029] S2. Determine whether the diameter of the hole is greater than 4mm, and classify holes with a diameter greater than 4mm as Class I holes and holes with a diameter less than 4mm as Class II holes.

[0030] S3. Select the module corresponding to the production of a type of hole, and the extruder cooperates with the module to perform extrusion production to obtain a semi-finished pipe with a type of hole. The semi-finished pipe is then sent to a fixed-length saw for fixed-length sawing to obtain a semi-finished pipe section.

[0031] S4. The semi-finished pipe section is drilled using a horizontal drilling machine to obtain the second type of hole;

[0032] S5. After the semi-finished pipe section that has undergone the second-class hole processing is repaired, the finished pipe is obtained.

[0033] Wherein, the axis of the hole in the pipe is parallel to the axis of the pipe; and the number of holes in the pipe is two, three or four.

[0034] Because the cross-sectional shape of the extrusion production was adjusted, the holes in the profiles that were originally no larger than 4mm were changed to solid areas in the drawings. Consequently, corresponding molds were remade and extrusion production was carried out on the original extrusion press. At the same time, a horizontal drilling machine was added to the rear end of the original fixed-length sawing machine. The extrusion press, fixed-length sawing machine and horizontal drilling machine were connected by a conveyor belt to complete the assembly of a multi-hole pipe manufacturing equipment. The semi-finished pipes obtained by the extrusion press were cut to length by the fixed-length sawing machine and then drilled by the horizontal drilling machine. Therefore, when the cross-section of the produced profile contains holes no larger than 4mm, the extrusion production process was changed to two processes: extrusion followed by drilling.

[0035] The following experiments, conducted using the improved production equipment and under the premise of ensuring production quality, examine the original porous tube extrusion production and the improved scheme of this application. Some production parameters are shown in the table below:

[0036] Before improvement Improved Cut-off distance: 1000mm 1000mm Tail-cutting distance: 4000mm 4000mm Spindle speed: (1.9~2.1)mm / s (2.9~3.1)mm / s Traction speed: (3.7~3.8) m / min (5.5~5.7) m / min Cooling method: water spray water spray

[0037] Through the process design improvements in this application, the mold damage rate is significantly reduced, allowing for continuous production of four to six batches of products instead of the previously almost impossible continuous production. Simultaneously, by eliminating the small holes in the cross-section, the extrusion process is smoother, and the extrusion speed is improved from approximately 2.0 mm / s to 3.0 mm / s. The adoption of an extrusion-plus-drilling scheme for profile manufacturing significantly reduces mold costs and processing difficulty, while simultaneously improving production efficiency.

[0038] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for manufacturing porous pipe material, comprising the following steps: Step 1: determining the diameter of the holes on the cross section of the porous pipe material to be processed; Step 2: determining whether the diameter of the holes is greater than 4 mm, and classifying the holes with a diameter greater than 4 mm as a first type of hole and the holes with a diameter less than 4 mm as a second type of hole; Step 3: selecting a mold set corresponding to the production of the first type of hole, and extruding the pipe material with the mold set to obtain a semi-finished pipe material with the first type of hole, and then feeding the semi-finished pipe material into a sizing saw to obtain a semi-finished pipe segment; Step 4: drilling the semi-finished pipe segment by a horizontal drilling machine to obtain the second type of hole; and Step 5: obtaining the finished pipe material by trimming the semi-finished pipe segment after the processing of the second type of hole. The axis of the holes in the pipe material is parallel to the axis of the pipe material. The number of holes on the pipe material is two, three or four. ​ ​ ​ 2. A method of making a porous tubular article according to claim 1, wherein: ​ 3. A method of making a porous tubing according to claim 2, wherein: ​

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