JP2002346654A - Press equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press equipment capable of punching a work reasonably. SOLUTION: A press equipment, which is provided with a punch, a punch holder where the punch is placed, a stripper plate 4 arranged to be enabled to change its position to the punch holder and a die 5 that carries a load of a work W, has a structure that the work is made by plastic deformation of a plate-like material in three dimensions, each of the stripper plate and the die is attached closely to the work, forming the shape of a concave and a convex, and, after the fore end part of the punch has punched the work, the stripper plate is pressed from a punch holder side, so that the stripper plate and the die pressurize the work and correct the form of the work. Moreover, in a cavity of the die, a tapered part 51a which widens its opening is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press for punching a workpiece.

[0002]

2. Description of the Related Art Generally, a press apparatus for punching a work includes a punch, a punch holder on which a punch is arranged, a stripper plate displaceably provided with respect to the punch holder, and a die for receiving a load of the work. Have. The stripper plate has a guide hole for guiding the punch, and the leading end of the punch projects from the guide hole when the punch holder approaches. The die has a mold hole into which the tip of the punch projecting from the guide hole is immersed.
The work is sandwiched between the stripper plate and the die, and is punched at the tip of a punch projecting from the guide hole.

[0003]

In recent years, however, there has been a tendency for work shapes to be increasingly diversified and complicated, and the above-mentioned press apparatus has a structure for further improving workability in accordance with various works. Is desired.

[0004] The present invention has been made in view of such circumstances, and has as its object to provide a press apparatus that can rationally punch a work.

[0005]

According to a first aspect of the present invention, there is provided a punch, a punch holder on which the punch is arranged, a stripper plate displaceably provided with respect to the punch holder, and a work piece. The stripper plate has a guide hole for guiding the punch, the approach of the punch holder, projecting the tip of the punch from the guide hole, the die, The work has a mold hole for immersing the tip of the punch projecting from the guide hole, and the work is sandwiched between the stripper plate and the die, and is punched at the tip of the punch projecting from the guide hole. In the press apparatus, the work is formed by plastically deforming a plate-shaped material three-dimensionally, and the stripper plate and the die Each of the stripper plates and the die have a concave-convex shape in close contact with the work, and the stripper plate is pressed from the punch holder side after the tip of the punch punches the work. The press device is configured to correct the shape of the work by pressing the work, and according to such a structure, the work can be punched rationally.

That is, a work formed by plastically deforming a plate-shaped material three-dimensionally causes a delicate dimensional error due to its elasticity, etc., but the stripper plate and the die press the work. In this case, the shape of the work is corrected, and the shape can be obtained very accurately.

According to a second aspect of the present invention, there is provided a punch, a punch holder on which the punch is arranged, a stripper plate displaceably provided with respect to the punch holder, and a die for receiving a load of the work. The stripper plate has a guide hole for guiding the punch, and when the punch holder approaches, the tip end of the punch projects from the guide hole, and the die projects from the guide hole. In a press apparatus having a mold hole for immersing a tip portion of the punch, the work is sandwiched between the stripper plate and the die, and is punched at a tip portion of the punch projecting from the guide hole.
The die hole of the die is a press device having a configuration in which a tapered portion that widens the opening is provided.
It is possible to punch the work rationally.

That is, according to the tapered portion of the mold hole, before the tip of the punch punches the workpiece, the periphery of the punched portion of the workpiece is plastically deformed in the punching direction. As a result, the work is provided with a hole recessed in a tapered shape.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 to 7, a press apparatus 1 of this embodiment includes a plurality of punches 2, a punch holder 3 on which the punches 2 are arranged, and a stripper displaceably provided with respect to the punch holder 3. A plate 4 and a die 5 for receiving a load of the work W are provided.

The punch holder 3 is fixed to a slide (not shown), and reciprocates up and down with respect to the die 5.

The stripper plate 4 has a plurality of guide holes 41 for guiding the punch 2, and the tip of the punch 2 projects from the guide holes 41 when the punch holder 3 approaches.

The punch holder 3 and the stripper plate 4 are connected via a shaft 6 and a biasing means 7. The shaft 6 has one end portion at the stripper plate 4
And the other end is loosely fitted to the punch holder 3. The urging means 7 includes the stripper plate 4
In the present example, the coil spring is mounted on the shaft 6 and is interposed between the punch holder 3 and the stripper plate 4.

The die 5 has a plurality of mold holes 51 into which the tips of the punches 2 projecting from the guide holes 41 of the stripper plate 4 are immersed.

The work W of this embodiment is formed by three-dimensionally plastically deforming a plate-shaped material by roll forming or press forming. Further, the stripper plate 4 and the die 5 each have an uneven shape that is in close contact with the work W.

According to the present press device 1, first, the work W
Is set on the die 5, the punch holder 3 is lowered together with the stripper plate 4 (see FIG. 1).

Then, the work W
, The work W is sandwiched between the stripper plate 4 and the die 5 and fixed so as not to move (see FIG. 2).

When the punch holder 3 is further lowered, the coil spring serving as the urging means 7 is compressed, the punch holder 3 and the stripper plate 4 approach each other, and the tip of the punch 2 projects from the guide hole 41. The work W is provided in the guide hole 41
Punched at the tip of the punch 2 projecting from
Is immersed in the mold hole 51 of the die 5 (see FIG. 3).

In the present embodiment, the stripper plate 4 is pressed from the punch holder 3 side after the tip end of the punch 2 punches out the work W, so that the stripper plate 4 is pressed.
The die 5 presses the work W to correct the shape of the work W. The white arrow in FIG. 3 indicates the direction in which the stripper plate 4 is pressed.

That is, when the punch holder 3 is lowered to the lowest position, the leg portions 31 provided at important points of the punch holder 3 come into contact with the stripper plate 4, which presses the stripper plate 4 again. The stripper plate 4 is pressed by the urging means 7 until the work W is punched out, and after the work W is punched out, the leg 31 of the punch holder 3 comes into contact with the stripper plate 4 to be pressed more strongly. Leg 3 of punch holder 3
When 1 comes into contact with the stripper plate 4, a slide force is directly applied to the work W.

As described above, the press apparatus 1 according to the present embodiment punches out the work W and corrects its shape in a single stroke, and can surely improve the processing accuracy of the work W.

Further, according to the press apparatus 1 of the present embodiment, the die hole 51 of the die 5 is provided with a tapered portion 51a for widening the opening, and the punch 2 is provided with the tapered portion 51a.
Is provided with a step 21 for pressing the pressure.

According to this configuration, when the work W is sandwiched between the stripper plate 4 and the die 5 (see FIG. 5), when the punch holder 3 is further lowered, the work W is moved in the punching direction. The area around the punched portion is plastically deformed (see FIG. 6).

The work W is punched out at the tip of the punch 2 after the periphery of the punched portion is plastically deformed.
Is pressed against the tapered portion 51a by the step 21 of the punch 2 (see FIG. 7). Thus, the hole of the work W is tapered.

As described above, the press apparatus 1 of the present embodiment is provided with the tapered portion 51a in the die hole 51 of the die 5, and the work W can be provided with a tapered concave portion.

Next, an application example of the work W processed by the press device 1 will be described with reference to FIGS. These figures show the heat exchanger 100. The work W is one of members constituting the heat exchanger 100, and specifically, is a later-described end plate 320.

The heat exchanger 100 is a condenser of an in-vehicle air conditioning refrigeration cycle mounted on an automobile, and has a core formed by alternately stacking a plurality of tubes 210 and a plurality of fins 220 through which a medium (ie, a refrigerant) flows. 200 and a pair of tanks 300 to which both ends of the tube 210 are connected, respectively, and are configured to perform heat exchange of the medium by heat transmitted to the core 200.

The refrigeration cycle includes a compressor for compressing a medium, a condenser for cooling and condensing the compressed refrigerant, an expansion valve for decompressing the compressed refrigerant, and an evaporator for evaporating the depressurized refrigerant. I have.

The tank 300 is provided with an inlet 400 for flowing the medium and an outlet 500 for flowing the medium. The medium flows into the inside of the tank 300 from the inlet 400, flows through the tube 210 while exchanging heat, and is then discharged from the outlet 500 to the outside of the tank 300.

Each tank 300 has its interior partitioned at predetermined intervals, and the medium is
It is configured to go back and forth between 00 and a plurality of times.

The upper and lower sides of the core 200 are provided with side plates 600 as reinforcing members. The end of each side plate 600 is supported by the tank 300.

Further, a gas-liquid separator 700 is provided in one of the tanks 300, and the medium is once sent from the tank 300 to the gas-liquid separator 700 in the process of flowing from the inlet 400 to the outlet 500. Only the liquid layer is at the outlet 500
It is configured to go to.

One tank 300 and gas-liquid separator 700
Is connected via a connector 800 for connecting the gas-liquid separator provided on the tank 300 side.

The tubes 210, the fins 220, the tank 300, the inlet section 400, the outlet section 500, the side plate 600, and the connector 800 constituting the heat exchanger 100 are each formed by molding aluminum or an aluminum alloy. The members are assembled, and the assembled body is integrally formed by heat treatment in a furnace.
The cladding of the brazing material, the application of flux, and the like are performed in advance at key points of each member.

The tank 300 is constructed by assembling a tank plate 310 and an end plate 320.

Each of the tank plate 310 and the end plate 320 is formed by press forming a plate material made of aluminum or an aluminum alloy having a required plate thickness.

The tank plate 310 is a semi-cylindrical member, and the end plate 320 is
10 is a semi-cylindrical member forming a pair.

In the longitudinal direction of the end plate 320, a hole 32 into which the end of the tube 210 is inserted and connected.
A plurality of 1s are provided at regular intervals. End plate 32
The zero hole 321 is provided in the press device 1 described above, and has a tapered shape.

The partition plate 33 is provided at a predetermined interval between the tank plate 310 and the end plate 320.
0 is provided. That is, the end and the inside of the tank 300 are closed and partitioned by the partition plate 330.

The tank plate 310 and the end plate 3
20 is assembled by mounting an end plate 320 between both edges of the tank plate 310. Then, both edges of the end plate 320 are connected to the tank plate 310.
Is brazed to the inner peripheral surface.

Further, at the edge of the tank plate 310,
A plurality of bent pieces 311 for holding the end plate 320 are provided at appropriate intervals. After the end plate 320 is positioned on the tank plate 310, the bent piece 31
1 is fixed by bending.

In such a heat exchanger 100, if the holes 321 of the end plate 320 are provided in the press device 1 of the present embodiment, the processing accuracy of the end plate 320 can be improved. Further, if the hole 321 concaved in a tapered shape is provided, the insertability of the tube 210 into the hole 321 can be improved.

As described above, the press apparatus 1 of this embodiment
Can punch the work rationally,
For example, it can be very suitably used for processing the constituent members of the heat exchanger 100.

[0044]

According to the first aspect of the present invention, a punch, a punch holder on which the punch is arranged, a stripper plate displaceably provided with respect to the punch holder, and receiving a load of the workpiece. With a die,
The stripper plate has a guide hole for guiding the punch, and when the punch holder approaches,
The tip of the punch protrudes from the guide hole, the die has a mold hole for immersing the tip of the punch protruding from the guide hole, and the work is sandwiched between the stripper plate and the die. In a press apparatus for punching at the tip of the punch projecting from the guide hole, the work is formed by three-dimensionally plastically deforming a plate-shaped material, and the stripper plate and the die are respectively The stripper plate is pressed from the punch holder side after the tip of the punch punches the work, and the stripper plate and the die add the work. A press device configured to correct the shape of the work by pressing the work. According to such a structure, the work can be punched rationally. It is possible.

According to a second aspect of the present invention, there is provided a punch, a punch holder on which the punch is disposed, a stripper plate displaceably provided with respect to the punch holder, and a die for receiving a load of the work. The stripper plate has a guide hole for guiding the punch, and when the punch holder approaches, the tip end of the punch projects from the guide hole, and the die projects from the guide hole. In a press apparatus having a mold hole for immersing a tip portion of the punch, the work is sandwiched between the stripper plate and the die, and punched at a tip portion of the punch projecting from the guide hole,
The die hole of the die is a press device having a configuration in which a tapered portion that widens the opening is provided.
Work can be punched reasonably.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a press device according to a specific example of the present invention.

FIG. 2 is a schematic view showing a press device according to a specific example of the present invention.

FIG. 3 is a schematic view showing a press device according to a specific example of the present invention.

FIG. 4 is a perspective view showing a main part of a stripper plate and a die according to a specific example of the present invention.

FIG. 5 is a schematic diagram showing a main part of a press device according to a specific example of the present invention.

FIG. 6 is a schematic view showing a main part of a press device according to a specific example of the present invention.

FIG. 7 is a schematic diagram showing a main part of a press device according to a specific example of the present invention.

FIG. 8 is a front view showing a heat exchanger according to a specific example of the present invention.

FIG. 9 is an exploded perspective view showing a main part of a heat exchanger according to a specific example of the present invention.

FIG. 10 is an exploded perspective view showing a tank according to a specific example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press apparatus 2 Punch 3 Punch holder 4 Stripper plate 5 Die 6 Shaft 7 Energizing means W Work 21 Step portion 31 Leg 41 Guide hole 51 Mold hole 51a Tapered portion 100 Heat exchanger 200 Core 210 Tube 220 Fin 300 Tank 310 Tank Plate 311 Folded piece 312 Hole 320 End plate 321 Hole 330 Partition plate 331 Convex part 400 Inlet part 500 Outlet part 600 Side plate 700 Gas-liquid separator 800 Connector

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // B21D 53/08 B21D 53/08 C F28F 9/02 301 F28F 9/02 301A (72) Inventor Makino Hideki 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama Prefecture Inside the Xexel Valeo Climate Control (72) Inventor Jun Akaike 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama Prefecture F-term (reference) 4E003 AA01 CA03 4E048 AC03 LA04 LA10 LA16 LA17

Claims (2)

[Claims] A punch, a punch holder on which the punch is arranged, a stripper plate displaceably provided with respect to the punch holder, and a die for receiving a load of the work, wherein the stripper plate includes: It has a guide hole for guiding the punch, and when the punch holder approaches,
The tip of the punch protrudes from the guide hole, the die has a mold hole for sinking the tip of the punch protruding from the guide hole, and the work is sandwiched between the stripper plate and the die. In a press apparatus for punching at the tip of the punch projecting from the guide hole, the work is formed by three-dimensionally plastically deforming a plate-shaped material, and the stripper plate and the die are respectively After the tip of the punch punches the work, the stripper plate is pressed from the punch holder side so that the stripper plate and the die add the work. A press device for correcting the shape of the work by pressing. 2. A punch comprising: a punch; a punch holder on which the punch is disposed; a stripper plate provided to be displaceable with respect to the punch holder; and a die for receiving a load of the work, wherein the stripper plate comprises: It has a guide hole for guiding the punch, and when the punch holder approaches,
The tip of the punch protrudes from the guide hole, the die has a mold hole for sinking the tip of the punch protruding from the guide hole, and the work is sandwiched between the stripper plate and the die. A press device for punching at a tip end of the punch projecting from the guide hole, wherein the die hole of the die is provided with a tapered portion for widening the opening.