JP2007313512A - Press-working method and pressed part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently manufacture parting members which are different in the dimensions of a projecting part with a common die. <P>SOLUTION: In a blanking method for blanking parts, the parts 430a, 430b have a main body part 431a, 431b and the projecting part 432a, 432b where is projected from the main body part, the projecting part is adjustable in the dimensions in the projecting direction, the die 700 blanks so that the projecting direction of the projecting part is corresponded to the width direction of a metal plate and the parts which are different in the dimensions of the projecting part can be blanked with the common die by changing the widths L1, L2 of the metal plates 800a, 800b. This pressed parts have constitution that tapered parts are provided at the top of the projecting part and chipped parts are provided in the midway of the projecting part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pressing method for punching a part from a plate material using a mold.

As heat exchangers such as radiators and evaporators used in the refrigeration cycle, a plurality of flat tubes and corrugated fins are alternately stacked to form a core, and the end of the tube is connected to a tank. What is known. The refrigerant is taken into the inside from a connector provided in the tank, flows through the tube while exchanging heat with heat transmitted to the core, and then discharged from the tank to the outside. This type of heat exchanger is manufactured by assembling each component and brazing the assembly in a furnace. The tank of the heat exchanger is generally cylindrical, and the inside is partitioned by a partition member. As the partition member, a part punched from a plate material using a predetermined mold is employed. Patent Document 1 discloses a heat exchanger in which a tank is partitioned by a partition member. Patent Documents 2 and 3 disclose configurations for punching parts having different shapes.
International Publication No. 03/27594 Pamphlet JP-A-11-169963 JP 2001-79735 A

  In heat exchangers, it is important to improve the heat exchange efficiency of the medium and rationalize its manufacture, and the processing of the partition members is also required to have a better configuration in light of these issues. Yes. For example, the partition member has a main body section that divides the inside of the tank and a protruding section that protrudes from the main body section, and is assembled by inserting the protruding section into a hole provided in the tank. The partition member may be fixed by caulking the protruding portion. The dimension of this protrusion part is adjusted as needed. That is, when the thickness of the tank is thin, it is shortened, and when it is thick, it is lengthened. Furthermore, if the protruding portion of the predetermined partition member protrudes to the outside of the tank to some extent, it can be used as a positioning means for another member (for example, a connector). The protrusion of the predetermined partition member may be set longer than the protrusions of the other partition members.

  Now, when punching partition members having different projecting dimensions, it is common to use different molds. However, if each mold is prepared according to the dimensions of the protrusion, there is a problem that the cost increases. There is also a problem that the work of setting the mold in the punching device and the management of the mold become complicated. In the manufacturing site of a heat exchanger, the structure for manufacturing the partition member from which the dimension of a protrusion part differs more easily is calculated | required.

  This invention is made | formed in view of this situation, The objective is to manufacture efficiently the partition member from which the dimension of a protrusion part differs in a common metal mold | die.

  The invention described in claim 1 of the present application is a press working method in which a part is punched from a plate material using a mold, and the part has a main body part and a protruding part protruding from the main body part, and the protruding part The size of the portion is adjusted in the protruding direction, and the mold is punched so that the protruding direction of the protruding portion corresponds to the width direction of the plate material, and the width of the plate material is changed. Thus, the press working method having a configuration in which the parts having different projecting dimensions can be punched with a common mold.

  The invention described in claim 2 of the present application is a press processing method in which a heat exchanger component is punched from a plate material using a mold, and the heat exchanger includes a tube through which a medium flows and an end portion of the tube. A tank connected to the tank, the tank including a partition member that divides the inside of the tank, the partition member including a body portion that divides the inside of the tank, and a protruding portion protruding from the body portion, The protruding portion is adjusted in dimension in the protruding direction, and the mold is punched so that the protruding direction of the protruding portion corresponds to the width direction of the plate material, and the width of the plate material is set. This is a press working method having a configuration in which the partition member having a different dimension of the protruding portion can be punched with a common die by changing.

  The invention described in claim 3 of the present application is a component formed by punching from a plate material by pressing using a mold, and the component has a main body portion and a protruding portion protruding from the main body portion, The projecting portion is adjusted in dimension in the projecting direction, and the mold is punched so that the projecting direction of the projecting portion corresponds to the width direction of the plate material, and the width of the plate material is changed. Thus, the parts having different dimensions of the protrusions can be punched with a common mold, and a tip is provided at the tip of the protrusions, and among the parts having different dimensions of the protrusions, The part having a long dimension of the protruding part is a press-worked part having a configuration in which a defective part is provided in the middle of the protruding part.

  According to the press working method of the present invention, it is possible to efficiently manufacture partition members having different projecting dimensions in a common mold.

  A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing a heat exchanger. FIG. 2 is a cross-sectional view showing a tank and a gas-liquid separator. FIG. 3 is a top cross-sectional view showing the main part of the heat exchanger. FIG. 4 is a perspective view showing a main part of the heat exchanger. FIG. 5 is an exploded perspective view showing a main part of the heat exchanger according to the embodiment of the present invention. FIG. 6 is a perspective view showing a gas-liquid separator connector. FIG. 7 is a front view showing the first partition member and the second partition member. FIG. 8 is an explanatory diagram of a pressing method for the first partition member. FIG. 9 is an explanatory diagram of a pressing method for the second partition member. FIG. 10 is an explanatory diagram showing cutting of the protruding portion of the second partition member.

  The heat exchanger 100 of this example is a condenser of an in-vehicle air conditioning refrigeration cycle mounted on an automobile, and a pair of tubes 200 stacked via fins 300 and a pair of ends connected to the tubes 200, respectively. A tank 400 is provided, and the medium (that is, the refrigerant) is cooled and condensed by heat transmitted to the tubes 200 and the fins 300. That is, the laminated portion of the tube 200 is a core that performs heat exchange of the medium.

  The pair of tanks 400 are provided with a first connector 410 serving as an inlet portion for flowing in the medium and a second connector 420 serving as an outlet portion for flowing out the medium. The medium flows through the first connector 410. After being introduced into the tank 400 and flowing through the tube 200 while exchanging heat, the second connector 420 discharges the outside. The first connector 410 is connected to another flow path for sending the medium from the compressor to the heat exchanger 100. The second connector 420 is connected to another flow path for sending the medium from the heat exchanger 100 to the expansion valve.

  The tank 400 is configured such that the inside of the cylinder is partitioned by a first partition member 430a and a second partition member 430b at a predetermined interval, and the medium reciprocates between the tanks 400. .

  Further, side plates 500 as reinforcing members are provided on the upper and lower sides of the layer formed of the tubes 200 and the fins 300, respectively. The end of each side plate 500 is supported by the tank 400.

  Further, one tank is provided with a gas-liquid separator connector 440 to which the gas-liquid separator 600 is attached. The gas-liquid separator 600 separates the medium into a gas layer and a liquid layer, and is detachably attached to the gas-liquid separator connector 440 provided in the tank 400 by screwing.

  In the process of flowing from the first connector 410 to the second connector 420, the medium is once sent from the tank 400 to the gas-liquid separator 600, and only the liquid layer is directed to the second connector 420. That is, the lower part of the present heat exchanger 100 is a subcooling part 100 a that cools the liquid layer medium separated by the gas-liquid separator 600.

  The tank 400 of this example is a semi-cylindrical first tank member 450 and second tank member 460 that are combined to form a cylinder, and the first tank member 450 and the second tank member 460 are connected between the first tank member 450 and the second tank member 460. The first partition member 430a and the second partition member 430b are arranged. The first tank member 450 is a plate material in which tube connection holes 451 are arranged at a constant pitch over the longitudinal direction. The tube 200 is inserted into the tube connection hole 451 and connected. The second tank member 460 is provided with a first connector 410 and a second connector 420.

  The second tank member 460 is a plate material in which caulking pieces 461 are arranged on both edges in the longitudinal direction at a constant pitch, and the first tank member 450 is fitted between the both edges and the required caulking is performed. The piece 461 is deformed to hold the first tank member 450.

  The first partition member 430a and the second partition member 430b are parts whose edges are brazed to the inner peripheral surface of the cylindrical body, and main body portions 431a and 431b that match the internal shape of the tank 400, and the second tank member Projection portions 432a and 432b inserted into hole portions 462 provided in 460, respectively. The dimension of the protrusion 432b of the second partition member 430b is set to be longer than the protrusion 432b of the first partition member 430a because it is fitted to the fitting part 446 of the block body 447 as will be described later. The configuration of the second partition member 430b is the same as that of the first partition member except for the size of the protruding portion 432b.

  The gas-liquid separator connector 440 of this example has a block body 447 as its constituent member. The block body 447 is a part manufactured by processing a forged member or an extruded member, and includes a first flow path 441 for flowing the medium from the tank 400 to the gas-liquid separator 600, and the medium from the gas-liquid separator 600. A second flow path 442 that flows to the tank 400, a seating surface 443 that is joined to the outer surface of the tank 400 by brazing, and a bolt insertion portion 444 for screwing the gas-liquid separator 600 are provided. The outlet opening 441b of the first channel 441 and the inlet opening 442a of the second channel 442 are connected to the channel of the gas-liquid separator 600 that is another channel. In addition, the inlet opening 441 a of the first flow path 441 and the outlet opening 442 b of the second flow path 442 are located on the seating surface 443, and each hole 463 provided at a main point of the second tank member 460. Connected to each. In addition, the inlet opening 441 a of the first flow path 441 and the outlet opening 442 b of the second flow path 442 illustrated in the figure are boss-like portions that protrude from the seating surface 443 into the tank 400. The seating surface 443 is expanded by a plate-like flange portion 445 along the outer surface of the cylindrical body, and is configured to ensure a relatively large brazing area.

  The seating surface 443 is provided with a fitting portion 446 for fitting the protruding portion 432b of the second partition member 430b, and the block body 447 is positioned using the protruding portion 432b of the second partition member 430b.

  Specifically, the second partition member 430b is disposed in the second tank member 460, and the hole-like or hollow-like fitting portion 446 is fitted into the protrusion 432b of the second partition member 430b protruding from the hole 462. The second partition member 430b, the second tank member 460, and the block body 447 are assembled. Here, if the protrusions 432b are caulked, their assembling strength can be improved. The second tank member 460 is assembled with the first tank member 450 after the gas-liquid separator connector 440 is assembled in this manner.

  The second partition member 430b that uses the protruding portion 432b for positioning the gas-liquid separator connector 440 includes an inlet opening 441a of the first flow path 441 in the gas-liquid separator connector 440 and a second flow inside the cylinder. The passage 442 is disconnected from the outlet 442b.

  The gas-liquid separator 600 includes an introduction pipe 610 connected to the outlet opening 441b of the first flow path 441 in the gas-liquid separator connector 440 and an opening 442a of the second flow path 442 in the gas-liquid separator connector 440. And an outlet 620 to be connected. The medium flows from the tank 400 through the gas-liquid separator connector 440, is sent to the introduction pipe 610 of the gas-liquid separator 600, rises up the introduction pipe 610, and is ejected into the gas-liquid separator 600. The ejected medium is separated into a gas layer and a liquid layer when the liquid layer accumulates below the inside of the gas-liquid separator 600. The liquid layer medium accumulated in the lower portion of the gas-liquid separator 600 flows through the connector from the outlet 620 and is sent back to the tank 400, and further flows through the tube 200 while exchanging heat to the second connector 420. Head. A desiccant layer 630 and a filter 640 are disposed inside the gas-liquid separator 600, and moisture and impurities contained in the medium are removed by passing through the medium.

  Each member constituting the tube 200, the fin 300, the tank 400, the side plate 500, the first connector 410, the second connector 420, and the gas-liquid separator connector 440 is formed by molding aluminum or an aluminum alloy, and is a heat exchanger. 100 is manufactured by assembling each member integrally and brazing the assembly by heat treatment in a furnace. At the time of brazing in the furnace, brazing material and flux are provided in advance at the main points of each member. The gas-liquid separator 600 is detachably attached to the gas-liquid separator connector 440.

  Next, the manufacturing method of the 1st partition member 430a and the 2nd partition member 430b in this example is demonstrated. Each partition member 430a, 430b differs only in the dimension of the protrusion direction of protrusion part 432a, 432b. That is, the protrusions 432a and 432b of the first partition member 430a and the second partition member 430b are adjusted in dimensions in the protrusion direction. Each of the partition members 430a and 430b is manufactured by punching a plate material by press working, but it is considered that it is not efficient to manufacture them with different molds.

  Therefore, in this example, the mold 700 is punched so that the protruding directions of the protruding portions 432a and 432b correspond to the width directions L1 and L2 of the plate materials 800a and 800b, and the widths L1 and L2 of the plate materials 800a and 800b are set. By changing, partition members 430a and 430b having different projecting portions 432a and 432b can be punched with a common mold 700 (see FIGS. 7 to 9).

  The mold 700 is composed of a pair of push molds and punching dies. Reference numeral 710 in the figure denotes a push die and a punch die. The mold 710 has the same shape as the second partition member 430b. The mold 700 shown in the figure is for punching the four first partition members 430a or the second partition members 430b in one operation, but the number can be set as appropriate. There is no limitation.

  The plate member 800a for punching the first partition member 430a has a width L1 set to be shorter than the entire width of the mold 710. In the mold 710, a portion corresponding to the protruding portion 432b protrudes from the plate material 800a. For this reason, the dimension of the protrusion part 432a of the 1st partition member 430a becomes shorter than the dimension of the protrusion part 432b of the 2nd partition member 430b.

  Further, the plate member 800b for punching the second partition member 430b has a width L2 set equal to or longer than the entire width of the mold 710. In the mold 710, a portion corresponding to the protruding portion 432b does not protrude from the plate material 800a. For this reason, the dimension of the protrusion part 432b of the 2nd partition member 430b becomes longer than the dimension of the protrusion part 432a of the 1st partition member 430a.

  Thus, according to the press working method of the present example, it is possible to punch out parts having different projecting dimensions using a common mold.

  Note that a taper (Taper1) is provided at the tip of the protruding portion 432a of the first partition member 430a. Also, a taper (Taper2) is provided at the tip of the protruding portion 432a of the second partition member 430b. These tapers (Taper1, Taper2) can be set according to the shape of the mold 710. A missing portion corresponding to the taper (Taper1) of the protrusion 432a of the first partition member 430a is generated in the middle of the protrusion 432b of the second partition member 430b. That is, a part having a long projecting portion has a missing portion in the middle of the projecting portion, and the missing portion corresponds to a taper of the projecting portion in a part having a short projecting portion. Since the defective portion is minute, it does not cause a deterioration in the quality of the second partition member 430b. In this example, the defective part itself does not achieve a particular functional role. However, in the case where a taper is provided at the tip of each protruding part having a different dimension after specifying the press working method, Occurrence of missing parts is inevitable.

  Also, as shown in FIG. 10, after punching out the second partition member 430b, the same part as the first partition member 430a can be obtained by cutting the protruding portion 432b into a predetermined dimension. The protruding portion 432b of the second partition member 430b is cut so that a defective portion corresponding to the taper (Taper1) of the protruding portion 432a of the first partition member 430a is located at the tip after cutting. A line A in FIG. 10 indicates the cut portion. In this way, it is possible to obtain a part having the same type as the first partition member 430a by cutting the protruding portion 432b of the second partition member 430b punched out by pressing into a predetermined length. That is, the missing portion becomes a new taper (Taper1). Since this taper (Taper1) is due to the mold, it can be formed without any additional processing at the time of cutting. That is, the second partition member 430b of this example is a component with excellent versatility in that the dimension of the protruding portion 430a in the protruding direction can be easily adjusted.

  As described above, according to the press working method of the present example, it is possible to efficiently manufacture partition members having different projecting dimensions with a common mold. It should be noted that the configuration of this example can be changed as appropriate within the technical scope described in the claims, and is of course not limited to that illustrated in the drawings. For example, it is also possible to configure such that another partition member having a projecting portion dimension different from that of the first partition member or the second partition member is manufactured using a common mold. Moreover, although this example demonstrated the method of punching the partition member which is a component of a heat exchanger, this press work method can be applied to manufacture of various components which require the dimension adjustment of a protrusion part.

  The component obtained based on the present invention can be suitably used as a partition member for a tank in a heat exchanger such as a refrigeration cycle radiator, evaporator, internal heat exchanger, automobile radiator, or heater core.

It is a front view which concerns on the Example of this invention and shows a heat exchanger. It is sectional drawing which concerns on the Example of this invention and shows a tank and a gas-liquid separator. It is an upper surface sectional view showing an important section of a heat exchanger concerning an example of the present invention. It is a perspective view which concerns on the Example of this invention and shows the principal part of a heat exchanger. It is an exploded perspective view which shows the principal part of the heat exchanger according to the Example of this invention. It is a perspective view which shows the connector for gas-liquid separators concerning the Example of this invention. It is related with the Example of this invention, (a) is a front view which shows a 1st partition member, (b) shows a 2nd partition member. It is explanatory drawing of the press work method of the 1st partition member in the Example of this invention. It is explanatory drawing of the press work method of the 2nd partition member in the Example of this invention. It is explanatory drawing which concerns on the Example of this invention and shows the cutting | disconnection of the protrusion part of a 2nd partition member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Heat exchanger 100a Subcool part 200 Tube 300 Fin 400 Tank 410 1st connector 420 2nd connector 430a 1st partition member 431a Main body part 432b Projection part 430a 1st partition member 431a Main body part 432b Projection part 440 Gas-liquid separator connector 441 First channel 441a First channel inlet opening 441b First channel outlet opening 442 Second channel 442a Second channel outlet opening 442b Second channel inlet opening 443 Seating surface 444 Bolt Insertion portion 445 Flange portion 446 Fitting portion 447 Block body 447a Recess 450 First tank member 451 Tube connection hole 460 Second tank member 461 Caulking piece 462 Hole portion 463 Hole portion 464 Hole portion 500 Side plate 600 Gas-liquid separator 610 Introduction Tube 620 outflow Mouth 630 Desiccant layer 640 Filter 700 Mold 710 Mold 800a Plate material 800b Plate material

Claims (3)

In the press processing method of punching parts from a plate using a mold,
The component has a main body portion and a protruding portion protruding from the main body portion,
The projecting portion is prepared in a dimension in the projecting direction,
The mold shall be punched so that the protruding direction of the protruding portion corresponds to the width direction of the plate material,
A press working method, characterized in that, by changing the width of the plate material, the parts with different dimensions of the protrusions can be punched with a common mold. In the press processing method of punching out heat exchanger components from the plate using a mold,
The heat exchanger includes a tube that circulates a medium and a tank connected to an end of the tube, and the tank includes a partition member that divides the inside thereof.
The partition member has a main body portion that partitions the inside of the tank, and a protruding portion that protrudes from the main body portion,
The projecting portion is prepared in a dimension in the projecting direction,
The mold shall be punched so that the protruding direction of the protruding portion corresponds to the width direction of the plate material,
A press working method characterized in that the partition member having a different dimension of the protruding portion can be punched with a common die by changing the width of the plate material. In parts that are punched from plate materials by pressing using a mold,
The component has a main body portion and a protruding portion protruding from the main body portion,
The projecting portion is prepared in a dimension in the projecting direction,
The mold shall be punched so that the protruding direction of the protruding portion corresponds to the width direction of the plate material,
By changing the width of the plate material, it is possible to punch the parts with different dimensions of the protruding portion with a common mold,
A taper is provided at the tip of the protrusion,
Among the parts having different dimensions of the protruding part, the part having a long dimension of the protruding part is provided with a defective part in the middle of the protruding part.

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