JP2010064146A - Method for manufacturing container for absorbing fluid shock or mechanical shock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a container for absorbing fluid shock or mechanical shock, in which production cost is reduced by integrating a container body and a coupling pipe coupled to at least one side of the container body and by eliminating a separate process for coupling the container body with the coupling pipe. <P>SOLUTION: The method for manufacturing a container for absorbing fluid shock or mechanical shock comprises: a step of preparing a raw material pipe, a step of forming a coupling pipe by reducing a diameter of at least one side of the raw material pipe, and a step of processing an inner circumference of the coupling pipe and then bending it. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a container main body having an enlarged diameter and a connecting pipe connected to at least one side of the container main body by an outer diameter reduction process and an inner diameter cutting process to connect the container main body and the connecting pipe. The present invention relates to a method for manufacturing a fluid shock or mechanical shock mitigation container that reduces costs by removing the above process.

  In general, an air-con compressor is driven by an engine and compresses a refrigerant that has become a low-pressure gas in an evaporator to a high pressure and sends it to a condenser.

  A compressor 1 of this type of air conditioner is disclosed in Patent Document 1, and as shown in FIG. 1a, an air conditioner unit (not shown) installed indoors through a refrigerant moving means 3 penetrating a dash panel 2. ).

  At this time, the refrigerant moving means 3 is connected to the connecting pipe 13 connected to the compressor 1 of the air conditioner, the connecting hose 23 connected to the connecting pipe 13, the connecting hose 23, and the dash panel 2. An air conditioner unit pipe 33 that penetrates and is connected to an air conditioner unit installed indoors.

  The connecting pipe 13 is connected to both sides of the container 50 as first and second connecting pipes 130 and 230. Thus, the container 50 connected to a predetermined part of the connecting pipe 13 functions to eliminate the flow noise of the refrigerant moving through the refrigerant moving means 3.

  As shown in FIG. 1b, the connection state between the connecting pipe 13 and the container 50 is the first connected to the compressor 1 of the air conditioner when the container 50 is installed at a predetermined portion of the connecting pipe 13. The connecting pipe 130 is joined to the inlet flange 51 of the container 50 by welding, and the second connecting pipe 230 connected to the connecting hose 23 is joined to the outlet flange 53 of the container 50 by welding.

  Moreover, the container which has the shape as mentioned above is applied to the same shape in the accumulator 5 of the refrigerator similar to what was indicated by patent document 2, As shown in FIG. The refrigerant inlet port is formed vertically, and the refrigerant outlet port is formed at a certain angle with respect to the inlet port provided at the upper end of the accumulator body 5a. Thus, the back flow of the refrigerant is prevented, the recovery efficiency of the hydraulic oil is increased, and the generation of noise is prevented.

  However, such a container and an accumulator are connected to the refrigerant moving means 3 via the first and second connecting pipes 130 and 230 of the connecting pipe 13, or connected between the refrigerator compressor and the evaporator. Therefore, there is a problem in that a plurality of welding processes and cleaning operations are required when manufacturing the container or the accumulator, thereby increasing the cost.

  Further, Patent Document 3 related to the manufacture of such a container discloses a method for manufacturing the container. As shown in FIG. 3, the method disclosed in Patent Document 3 includes an upper end forming step of reducing the diameter of the upper end of a cylindrical hollow tube made by extrusion, and a lower end of the cylindrical hollow tube. Lower end forming step to reduce the diameter of the part, and drilling to remove the burr by cutting the pipe in / out part of the cylindrical hollow tube that has already been formed of the upper and lower end parts to the required length And an end cutting and finishing step for rounding the end.

  However, according to such a container manufacturing method, since the pipe diameter is reduced by molding, a difference in the thickness of the pipes occurs when the first and second connecting pipes are connected as described above. In addition to causing a decrease in flow, there is a problem that noise due to a pressure difference is generated and the reliability of the container is reduced.

Korean registered patent No. 412859 specification Korean Registered Patent No. 31465 Specification Korean Published Patent No. 2008-10849

  An object of the present invention is to reduce manufacturing costs and material costs, to reduce weight, and to integrate a container main body and a connecting pipe connected to at least one side of the container main body. It is possible to minimize the process for connecting the main body and the connecting pipe, and it is possible to prevent noise generation and flow reduction phenomenon due to protrusions at the connecting part of the connecting pipe to which the compressor etc. are connected. It is another object of the present invention to provide a method for manufacturing a fluid shock or mechanical shock mitigation container that can be smooth and uniform to improve the appearance.

  In order to achieve the above object, the first embodiment of the present invention includes a step of preparing a raw tube and the connecting pipe while simultaneously forming a container body and a connecting pipe when the original pipe is repeatedly press-fitted. Preparing a mold having an inner diameter molding tool so as to mold the inner diameter of the tube, and reducing the outer diameter of at least one side of the original pipe by repeatedly press-fitting after inserting the original pipe into the mold. And extending the connecting pipe to at least one side of the container body, and moving the inner diameter forming tool to form the inner diameter of the connecting pipe, thereby reducing fluid shock or mechanical shock. A method for manufacturing a container is provided.

  Further, in the second embodiment of the present invention, after preparing a tube having a diameter smaller than the diameter of a desired container body, the prepared tube is inserted into a mold having an outer diameter molding portion having a desired diameter, By expanding the diameter with the hydraulic pressure supplied to the inner diameter side, the stage for preparing the original pipe, and the original pipe is inserted into a mold in which the tapered surface and the pipe manufacturing section are continuously formed, and then repeatedly pressurized. Thereby reducing the outer diameter of at least one side of the original pipe to integrally extend the connecting pipe on at least one side of the container body, and cutting the inner diameter side of the connecting pipe. A method for manufacturing a container for mitigating fluid shock or mechanical shock is provided.

  According to the present invention described above, the manufacturing cost and the material cost are reduced, the welded portion is omitted to reduce the weight, and the container body and the connecting pipe connected to at least one side of the container body are integrated. This minimizes the process for connecting the container body and the connecting pipe, eliminates the need for pipe connection at the connecting part with other pipes to which the compressor is connected, and generates noise and reduces flow due to the protrusion of the conventional connecting part. This has the effect of preventing the phenomenon and improving the appearance by making the appearance smoother and more uniform.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 4 is a flowchart showing a method for manufacturing a container according to the first embodiment of the present invention, FIG. 5 is a manufacturing process diagram of the container according to the first embodiment of the present invention, and FIGS. 6a and 6b are modifications of FIG. Manufacturing steps of the container according to the example, FIGS. 7 and 8 are manufacturing steps of the container according to another modified example of FIG.

  The container 300 of the present invention has an integral structure in which a container body 310 having an enlarged diameter and a connecting tube 330 connected to at least one side of the container body 310 are integrated.

  In general, the container of the present invention is used for a refrigerator accumulator or an automobile muffler, but is not limited thereto.

  Hereinafter, the manufacturing method which manufactures the container 300 of this invention is demonstrated.

  In the first step of the present invention, a fixed-length original pipe P having an outer diameter corresponding to the outer diameter of the container 300 is prepared. The diameter of the original pipe P may be the same as or smaller than that of the container main body 310, but the same diameter as the container main body is more advantageous in terms of man-hour saving, so this is the optimum embodiment.

  As a modified example, the original pipe P is prepared as a pipe having an outer diameter smaller than that of the container 300, and the prepared pipe is inserted into a sub mold M1 having an outer diameter forming part 320 for forming a desired outer diameter. After that, the pipe is expanded by the pressure of the fluid supplied by the hydraulic pipe 507 on the inner diameter side thereof to have a desired outer diameter (see FIG. 7).

  In the second stage of the present invention, the ends of the original pipe P are press-fitted into a mold M in which a pipe manufacturing section 403 having a predetermined length is extended from one side of the tapered surface 401, thereby both sides of the original pipe. The tube diameter D is reduced.

  In the third stage of the present invention, the connecting pipe 330 is integrally extended coaxially with the container body 310 through a process of determining inner diameters at both ends of the original pipe P to be reduced.

  At this time, an inner diameter forming tool 500 having a crimping portion 510 at the tip is movably provided inside the mold M so as to shape the inner diameter of the container 300.

  On the other hand, a pipe manufacturing unit 403 extends from the tapered surface 401 inside the mold M.

  A hydraulic pipe 507 may be further provided on one side of the inner diameter forming tool 500 so as to supply hydraulic pressure to the original pipe P.

  In the fourth stage of the present invention, a connecting pipe 330 for connecting to the compressor is integrally formed on at least one side of the original pipe P through the mold as described above, and then the container 300 is bent in a desired direction. To complete.

  As another modified example of the present invention, a round portion 405 protruding from one side of the tapered surface 401 is provided so as to correspond to the inner diameter forming tool 500 (see FIG. 8).

  Hereinafter, the production method of the present invention will be described in more detail based on the basic process steps as described above.

  As shown in FIGS. 4 to 8, the container 300 of the present invention is an integrated type in which a container main body 310 having an enlarged diameter and a connecting tube 330 connected to at least one side of the container main body 310 are integrated. By adopting the structure, various problems that occur in the conventional method in which the connecting pipe must be separately connected to the container main body 310 by welding are solved.

  In the container 300 of the present invention, in order to integrate the container main body 310 and the connecting pipe 330 protruding from at least one side of the container main body, a certain length having an outer diameter almost equal to the outer diameter of the container 300 as much as possible. Prepare the original pipe P.

  Of course, the original pipe P may be a pipe having an outer diameter smaller than that of the container 300, but in that case, an additional step as shown in FIG. That is, when the container 300 is manufactured using a pipe having a small outer diameter as described above, after inserting the original pipe P inside the sub mold M having the outer diameter forming portion 320 corresponding to the desired diameter, By supplying pressure to the inside of the original pipe P via the hydraulic pipe 507, the diameter of the original pipe is expanded to a desired diameter.

  As another modification, in the above-described diameter expanding operation, the inner diameter forming tool 500 may be provided with the hydraulic pipe 507 to perform the inner diameter forming and the diameter expanding operation simultaneously. This can be realized by combining the methods shown in FIGS.

  As described above, the mold M in which the original pipe P having the same outer diameter as the outer diameter of the container main body 310 is provided with the tapered surface 401 and the pipe manufacturing unit 403 so as to correspond to the container main body 310 and the connecting pipe 330 of the container 300. Attach to.

  At this time, an inner diameter forming tool 500 having a spherical crimping portion 510 at the end is prepared in advance inside the mold M so as to shape the inner diameter of the container 300.

  Subsequently, according to the present invention, the pipe diameter D is reduced by repeatedly press-fitting the mold M. The pipe diameter reducing operation as described above may be performed by one mold or may be performed so that the pipe diameter is gradually reduced through each mold whose diameter is gradually reduced.

  Subsequently, when the tube diameter on at least one side of the original tube P is reduced, the inner diameter forming tool 500 in the mold is pulled outward. Thus, since the inner diameter forming tool 500 forms a desired inner diameter while expanding the inner diameter side of the original pipe P, a finished container in which the container body 310 and the connecting pipe 330 are integrated can be obtained.

If the original pipe P has an outer diameter slightly smaller than the desired container body 310 as described above, the inner diameter forming tool 500 is moved after the outer diameter on both sides of the original pipe P is reduced by the mold M. Then, it is brought into close contact with the inner diameter side of the original pipe PO, and thereafter, pressure is supplied to the inner side of the original pipe P via the hydraulic pipe 507 to expand the diameter of the original pipe to a desired diameter.
On the other hand, the diameter-reducing operation for manufacturing the connecting pipe 300 as described above may be performed simultaneously on both sides of the original pipe P as shown in FIG. 5, and one side as shown in FIGS. 6a and 6b. After reducing the diameter, the other side may be reduced in diameter.
After the original pipe P is formed using the dedicated mold as described above and the container body 310 and the connecting pipe 330 are integrated, the connecting pipe 330 is bent in a desired direction, and the air conditioner can be operated without a separate welding operation. A container 300 that can be easily connected to a compressor or a refrigerator compressor is completed.
On the other hand, the mold M is provided with a round portion 405 projecting on one side of the tapered surface 401 corresponding to the inner diameter forming tool 500, so that the inner diameter forming tool and the mold move simultaneously around the original pipe. However, the inner diameter of the connecting tube 330 may be formed. In other words, the round portion 405 and the inner diameter forming tool 500 reduce the thickness as if the original tube was drawn and complete the connecting tube 330 having a desired dimension.

FIG. 9 is a flowchart showing a container manufacturing process according to the second embodiment of the present invention. FIG. 10 is a subsequent process diagram of manufacturing the container according to the embodiment of FIG.
The container 300 of the present invention has an integral structure in which a container body 310 having an enlarged diameter and a connecting tube 330 connected to at least one side of the container body 310 are integrated.
The container 300 of the present invention is used as an accumulator connected between a compressor and an evaporator of a refrigerator, or a muffler container of an air conditioner compressor for an automobile.
In the first stage of the manufacturing method according to the second embodiment of the present invention, first, a fixed-length original pipe P having an outer diameter substantially the same as the outer diameter of the container 300 is prepared.
Of course, in the preparation stage of the original pipe P, as shown in FIG. 7 described above, after preparing a pipe having an outer diameter smaller than the container 300, a mold having an outer diameter forming portion 320 corresponding to a desired pipe diameter. By supplying pressure to the original pipe P by the hydraulic pipe 507 inside the M1, an additional process of expanding the pipe diameter to have the same outer diameter is not excluded.
In the second stage of the present embodiment, the end of the original pipe P is press-fitted into a mold M in which a pipe manufacturing section 603 having a certain length is extended from one side of the tapered surface 601, thereby obtaining a pipe diameter. Reduce D.
Finally, in the third stage of the present embodiment, the connecting pipe is completed by cutting the pipe diameter D reduced as described above into a desired inner diameter using the cutting tool 700.
Next, the manufacturing method of the second embodiment of the present invention including the steps described above will be described in detail.

  As shown in FIGS. 9 and 10, the container 300 of the present invention has an integral structure in which a connecting tube 330 is coaxially extended at both ends of a container body 310, and has a problem with the conventional method. That is, the problem that the connecting pipe must be separately connected to the container body 310 is solved.

  In the first stage of the present embodiment, in order to mold the container 300 in which the container body 310 and the connecting pipe 330 are integrated, first, a certain length having an outer diameter substantially the same as the outer diameter of the container 300 is used. Prepare the original pipe P.

  Of course, the original pipe P may have an outer diameter smaller than that of the container 300 as in the first embodiment. In this case, by inserting the original pipe P inside the sub mold M1 having the outer diameter forming portion 320 corresponding to the desired diameter, and then supplying pressure to the inner side of the original pipe P by the hydraulic pipe 507, the original pipe The diameter is expanded to a desired diameter.

  In the second stage, when the original pipe P is repeatedly pressed by inserting it into a mold M in which a pipe manufacturing section 603 having a certain length is extended from one side of the tapered surface 601, the container body 310 and the connecting pipe are connected. A container 300 integrated with 330 can be obtained.

  At this time, during the process of integrally forming the container main body 310 and the connecting pipe 330 by the mold M, the inner diameter of the connecting pipe 330 is further reduced by a contracting action by the mold M from a desired dimension.

  In the final third stage of the present embodiment, when the reduced inner diameter is cut using the cutting tool 700 as described above, the connecting pipe 330 having a desired inner diameter dimension is provided. Thereby, the final container 300 is completed.

  In this way, the connecting pipe 330 of the container 300 in which the container body 310 and the connecting pipe 330 are integrally formed can be bent in a desired direction and immediately connected to an air conditioner compressor or the like.

It is a perspective view which shows the connection state of the conventional air-conditioning compressor and a container. It is sectional drawing which shows the connection state of the conventional air conditioner compressor and a container. It is sectional drawing which shows the state applied to the accumulator of the conventional refrigerator. It is a flowchart which shows the conventional container manufacturing method. It is a flowchart which shows the container manufacturing method which concerns on 1st Example of this invention. It is a container manufacturing process figure which concerns on 1st Example of this invention. It is a container manufacturing process figure which concerns on the modification of FIG. It is a container manufacturing process figure which concerns on the modification of FIG. It is a container manufacturing process figure which concerns on another modified example of FIG. It is a container manufacturing process figure which concerns on another modified example of FIG. It is a flowchart which shows the container manufacturing process which concerns on 2nd Example of this invention. It is a subsequent process figure of the container manufacture which concerns on the Example of FIG.

300 Container 310 Container body 320 Outer diameter forming part 330 Connecting pipe 401 Tapered surface 403 Pipe manufacturing part 500 Inner diameter forming tool 507 Hydraulic piping 510 Crimping part 601 Taper surface 603 Pipe manufacturing part 700 Cutting tool

Claims (7)

Preparing the tube,
Preparing a mold having an inner diameter forming tool so as to form the inner diameter of the connecting pipe while simultaneously forming the container body and the connecting pipe when repeatedly press-fitting the original pipe;
Inserting the original pipe into the mold and then repeatedly press-fitting it, thereby reducing the outer diameter of at least one side of the original pipe and extending the connecting pipe on at least one side of the container body; and
Moving the inner diameter forming tool to form the inner diameter of the connecting pipe. A method for manufacturing a fluid shock or mechanical shock mitigating container. The method of manufacturing a container for mitigating fluid shock or mechanical shock according to claim 1, wherein in the step of preparing the original pipe, a raw pipe having the same diameter as that of a desired container body is prepared. In the step of preparing the original tube, a tube having a diameter smaller than the diameter of a desired container body is prepared, and the prepared tube is inserted into a mold having an outer diameter molding portion having a desired diameter, and then the inner diameter side thereof. The method for manufacturing a fluid shock or mechanical shock relaxation container according to claim 1, wherein the raw pipe is manufactured by expanding the diameter with a fluid pressure supplied to the pipe.   In the step of preparing the original pipe, after preparing a pipe having a diameter smaller than the diameter of a desired container body in a mold having an outer diameter forming portion, an inner diameter forming tool to which a hydraulic pipe is connected is moved to the original pipe. 2. The method for manufacturing a fluid shock or mechanical shock mitigating container according to claim 1, wherein the original pipe is manufactured by closely contacting and expanding the diameter with a supplied hydraulic pressure.   The mold has a tapered surface and a tube manufacturing part continuously so as to integrate the container body and the connecting pipe and move the inner diameter forming tool to form the inner diameter of the connecting pipe. The method for manufacturing a fluid shock or mechanical shock relaxation container according to claim 1.   The mold includes a round portion protruding from a tapered surface corresponding to the inner diameter forming tool so as to be moved simultaneously with the inner diameter forming tool to form the inner diameter of the connecting pipe. 6. A method for producing a fluid shock or mechanical shock alleviating container according to 5. After preparing a pipe having a diameter smaller than the diameter of a desired container body, the prepared pipe is inserted into a mold having an outer diameter molding portion having a desired diameter, and then expanded by hydraulic pressure supplied to the inner diameter side thereof. To prepare the tube,
After inserting the original tube into a mold in which the taper surface and the tube manufacturing section are continuously formed, the outer diameter of at least one side of the original tube is reduced by repeatedly pressurizing to at least one side of the container body. Extending the connecting pipe integrally; and
And a step of cutting the inner diameter side of the connecting pipe. A method for manufacturing a fluid shock or mechanical shock mitigation container.