KR20130043719A - Press forming device for heat-exchanger fin - Google Patents

Abstract

PURPOSE: A press mold device for manufacturing heat exchanging fins is provided to accurately form uneven portions and through-holes of the heat exchanging fins. CONSTITUTION: A press mold device for manufacturing heat exchanging fins comprises a lower mold and an upper mold. The lower mold is positioned under materials. The lower mold comprises a lower forming part(130) for forming an uneven portion on the materials; and a punch for forming a foaming part on the materials. The upper mold is positioned above the materials and has an upper foaming part for forming the uneven portion on the materials with the lower forming part.

Description

Press mold device for heat exchange fin manufacturing {press forming device for heat-exchanger fin}

The present invention relates to a press die apparatus, and more particularly, to a press die apparatus for the production of heat exchange fins having a structure having wrinkles and irregularities on the surface.

Generally, a press die apparatus is a device which presses the product conveyed to a work position with a punch etc., and forms a hole, or shape | molds in various forms.

The press mold apparatus as described above includes an upper mold and a lower mold each having a structure corresponding to each other, and pass through each other by a concave-convex structure or a punch formed on an opposite surface between the upper mold and the lower mold. The material is molded.

The press mold apparatus for manufacturing a conventional heat exchange fin is manufactured in consideration of the shape characteristic of the heat exchange fin.

That is, in general, heat exchange fins are generally formed by forming holes for through-hole installation of tubes (tubes through which refrigerant flows), but recently, various shapes such as irregularities and wrinkles on the surface of heat exchange fins have been developed to improve heat exchange performance. Considering that heat exchange fins having a surface area increasing structure through additional forming are also provided, press irregularities for forming the irregularities are formed in the press mold apparatus for manufacturing such heat exchange fins.

In this case, the molding irregularities are formed in a shape corresponding to each other on the opposite surface between the upper mold and the lower mold while pressing the material passing between the two molds to form the irregularities due to the molding irregularities on the material. do.

The press mold apparatus according to the prior art described above is configured to press work materials of thin plates provided between each other while forming irregularities for forming formed on opposing surfaces of the upper mold and the lower mold always remain fixed at the same position.

However, considering that the upper mold and the lower mold have processing tolerances, the uneven boundary portions (bending portions) of the uneven portions formed on the material due to the processing tolerances of the respective molds are not clear in shape. As a result, there is a problem that the heat exchange performance of the heat exchange fin is inevitably deteriorated.

In addition, the processing tolerance affects the positions of the installation holes formed in the heat exchange fins, so that a plurality of heat exchange fins are stacked, and there is a high possibility that a defect may occur in the process of mounting the tubes through the installation holes. Have

In addition, even if the position of any one of the upper mold or the lower mold is out of the correct position, there is a problem that a defect that the irregularities formed in the material does not achieve the correct shape may occur.

The present invention has been made to solve the various problems according to the prior art described above, the object of the present invention can be accurately formed the shape and position of each through-hole and the shape and position for each unevenness formed in the heat exchange fins The present invention relates to a press mold apparatus for manufacturing a heat exchange fin of a new type.

According to the press mold apparatus for manufacturing heat exchange fins according to the present invention for achieving the above object, the lower molding for forming the unevenness to the material while being positioned below the material with the material installed to be movable for molding the heat exchange fins A lower mold having a part and a punch for forming a forming part on the material, and an upper mold having an upper molding part positioned on the top of the material and forming an unevenness to the material together with the lower molding part. Any one of the lower molded part of the lower mold and the upper molded part of the upper mold is fixedly installed and the other molded part is installed to be movable in a horizontal direction.

Here, the lower die is formed of a lower die set forming a lower base, and the upper die is fixed to the upper surface of the lower die set, and the lower forming portion is provided on the upper surface and the punch for forming a forming portion on the material is protruded upwardly It is configured to include a punch plate, the lower forming portion is installed on the upper surface of the punch plate and the lifting plate formed with a seating hole is formed in the inner portion, and is installed to be movable in the horizontal direction in the seating hole of the lift plate The upper surface is formed with a concave-convex plate for forming a concave-convex on the material, the inner side comprises a flow-shaped concave-convex plate formed by forming a lower through-hole for the penetration of the punch.

In addition, the horizontal direction in which the flow-type concave-convex plate flows is characterized in that it includes at least one of the left and right directions or the front and rear direction perpendicular to the traveling direction of the material.

In addition, the punch and the lower through-holes of the flow-type concave-convex plate through which the punch penetrates are formed to have a gap for the stable operation of the punch, the flowable distance of the flow-type concave-convex plate is the punch and the lower through-holes It is characterized in that it is set equal to or larger than the gap between.

In addition, the lift plate is installed to prevent flow in the horizontal direction and is characterized in that it is installed to be movable in the vertical direction.

In addition, the upper mold is formed with an upper base and an upper die set in which the upper molding part is installed on the bottom, and the upper molding part is formed on the bottom of the upper molding irregularities for forming irregularities on the material. In addition, it is characterized in that the punch receiving bush through which the punch is accommodated is fixed through.

As described above, the press mold apparatus for manufacturing heat exchange fins according to the present invention may flow at any one of a portion in which a lower molding irregularity is formed in a lower molding part constituting a lower mold and a region in which an upper molding irregularity is formed in an upper molding part constituting an upper mold. In this way, even if a clearance occurs according to the machining tolerances of the respective parts, it is possible to form a precise shape for the uneven portion of the heat exchange fin.

In particular, even if the positional change of at least one of the upper mold or the lower mold due to long use is made, the above-described positional variation is compensated by the flow of the flow-type recessed and projected plate, so that the irregular shape of the precise shape is always possible.

1 is a front view showing for explaining a press die apparatus for manufacturing a heat exchange fin according to a preferred embodiment of the present invention.
Figure 2 is a plan view showing the lower molded part of the lower mold of the press die apparatus for manufacturing heat exchange fins according to a preferred embodiment of the present invention.
Figure 3 is a bottom view showing the upper molding portion of the upper mold of the press die apparatus for heat exchange fin production according to a preferred embodiment of the present invention.
4 to 8 are cross-sectional views for explaining the manufacturing process of the heat exchange fin by the press die device for heat exchange fin production according to a preferred embodiment of the present invention.

Hereinafter, a preferred embodiment of the press die apparatus for manufacturing heat exchange fins of the present invention will be described with reference to FIGS. 1 to 8.

1 to 3 show a press mold apparatus (hereinafter, referred to as a “mold apparatus”) for manufacturing heat exchange fins according to a preferred embodiment of the present invention.

Such a mold apparatus according to an embodiment of the present invention, the lower mold 100 and the upper side of the material 10 disposed on the lower side of the material 10 with the material 10 for forming the heat exchange fin largely therebetween. It is configured to include an upper mold 200 disposed in.

At this time, the heat exchange fin means a corrugated heat exchange fin having wrinkles or irregularities formed on its surface.

Particularly, in the embodiment of the present invention, molding concave and convex portions 132b and 231 for forming the concave-convex 11 on the material 10 correspond to opposite surfaces between the lower mold 100 and the upper mold 200, respectively. In addition, any one of the molding irregularities 132b and 231 of the lower mold 100 and the upper mold 200 is installed to be fixed, and the other molding irregularities are formed in the horizontal direction. It is characterized by the possible installation. At this time, the concave-convex 11 may be concave-convex of the embossed structure, or may be a corrugated concave-convex made of acid and valleys.

This will be described in more detail below for each configuration.

First, the lower mold 100 includes a lower die set 110, a punch plate 120, and a lower molding part 130.

Here, the lower die set 110 is a portion forming the base of the lower mold 100, the punch plate 120 is a material 10 passing between the lower mold 100 and the upper mold 200. The punch 121 for forming the forming portion (not shown) is provided. The forming part is a part which is preliminarily formed in order to penetrate the installation hole of the heat exchange fin in a later step.

At this time, the punch 121 is installed on the punch plate 120 to be moved up and down elastically, the cover plate 140 for preventing the upper portion of the punch 121 is separated on the upper surface of the punch plate 120. Is installed.

In addition, the lower molding unit 130 is a portion for forming the concave-convex 11 on the material 10 as described above while being installed on the upper surface of the punch plate 120.

The embodiment of the present invention suggests that the lower molding unit 130 includes a lift plate 131 and a floating concave-convex plate 132 as shown in FIGS. 1 and 2.

In this case, the lift plate 131 is a portion that is separated from the lower mold 100 when the press molding for the material 10 is completed, the horizontal direction on the upper surface of the punch plate 120 In addition to being installed to prevent the flow in the up and down direction using the elastic member 133 is installed to be elastically movable. Along with this, a seating hole 131a is formed at an inner portion of the lift plate 131 to which a floating concave-convex plate 132 to be described later is installed.

In addition, the floating concave-convex plate 132 is a portion for forming the concave-convex 11 on the material 10 and supporting the position of the punch 121, and the concave-convex 11 on the material 10 on the upper surface. Lower unevenness for forming the molding (132b) is formed, the through hole 132a through which the punch 121 is formed is formed inside, the flow in the horizontal direction in the seating hole (131a) It is installed to be possible.

In this case, the horizontal direction in which the flow-type concavo-convex plate 132 flows is the same as the left and right directions or the vertical direction of the traveling direction of the material 10 as shown in FIG. 2. At least one of the directions is included, and preferably, both a left and right direction identical to the traveling direction of the material 10 and a front and rear direction perpendicular to the traveling direction of the material 10 are included, which is the material 10 Irrespective of the direction of the concavities and convexities 11 to be formed in the), the flow-type concavo-convex plate 132 can be freely flowed in the front and rear and left and right directions.

Of course, the flow distance (G1, G2) of the flow-type concave-convex plate 132 is preferably set to an appropriate range that is not excessively small, for this purpose in the embodiment of the present invention in consideration of the processing tolerances of the various configurations of the punch ( The gap G3 is equal to, or more than, the size of the gap G3 formed between the through hole 132a of the flow-type uneven plate 132 through which the punch 121 penetrates. It is suggested that the flow distance is set to be large.

That is, when the flow distances G1 and G2 of the floating concave-convex plate 132 are smaller than the gap G3, for example, oils, etc., present in the floating concave-convex plate 132 and the seating hole 131a may be used. This is because the viscosity may cause a problem that the flow-type uneven plate 132 does not flow smoothly.

At this time, when the flow distance (G1, G2) of the flow irregularities plate 132 is excessively large, the molding can be formed even though the flow irregularities plate 132 has not reached the correct position by a quick pressing operation. The flow distances G1 and G2 may be set to be within approximately four times the distance of the gap G3 in consideration of the problem that the problem may be caused, but as shown in FIG. Since the flow distance G3 in the direction perpendicular to the advancing direction can be further increased, the limitation thereof is omitted.

Next, the upper mold 200 includes an upper die set 210, a spacer 220, and an upper molding part 230.

Here, the upper die set 210 is a portion forming the base of the upper mold 200, the spacer 220 is fixed to the upper mold portion 230 to the upper die set 210 while The upper dieset 210 is a portion that serves to space a predetermined distance.

The upper forming unit 230 is a portion for forming the concave-convex 11 on the material 10 together with the lower forming unit 130 while being installed on the bottom surface of the spacer 220, and attached to Figures 1 and 3 As described above, an upper molding concave-convex 231 for forming the concave-convex 11 on the material 10 is formed on the bottom of the upper forming unit 230, and the punch 121 of the lower mold 100 is accommodated in the inner part. The punch accommodating bush 232 is formed through the fixed.

In particular, the portion of the upper forming portion 230 formed with the upper forming concave-convex 231 is characterized in that it is configured in a fixed state unlike the flow-type concave-convex plate 132 of the lower forming portion 130 described above.

That is, any one of the molding irregularities 231 of the upper molding irregularities 231 and the lower molding irregularities 132b to achieve a fixed state and the other molding irregularities 132b to achieve a flow state.

That is, during forming of the concave-convex 11 with respect to the material 10 entered between the two forming concave-convex (132b, 231), the upper forming concave-convex 231 of the fixed state serves to support the material (10) The lower molding concave-convex 132b in the flow state serves to mold the material 10 while corresponding to the position of the upper molding concave-convex 231 in the fixed state when the upper mold 200 moves downward. To do this. As a result, each boundary portion of the concave-convex 11 formed in the material 10 may be molded in an accurate bent state.

In the following, the manufacturing process of the heat exchange fin by the mold apparatus according to the preferred embodiment of the present invention described above will be described in more detail.

First, in the initial state as shown in FIG. 1, the lower mold 100 is in a fixed state, and the upper mold 200 is positioned above the lower mold 100 and the lower mold 100. The spaced apart state is maintained, and the material 10 is positioned between the upper mold 200 and the lower mold 100 to pass therethrough.

At this time, the lift plate 131 of the lower molding unit 130 constituting the lower mold 100 is positioned in a state spaced apart from the upper side of the cover plate 140 by the elastic member 133, the lift plate 131 Floating concave-convex plate 132 located in the seating hole (131a) of the) is placed on the top surface of the cover plate 140, the top surface of the lift plate 131 with the material 10 is placed Is located.

When the downward movement of the upper mold 200 is made in the initial state as described above, the bottom surface of the upper forming part 230 constituting the upper mold 200 is attached to the upper surface of the material 10 as shown in FIG. 4. The material 10 and the lift plate 131 supporting the material 10 are downwardly pressed.

In addition, when the material 10 reaches the instant when the material 10 contacts the upper surface of the floating concave-convex plate 132, the material 10 is formed on the lower concave-convex plate 132b and the upper portion of the concave-convex plate 132. Molding to the shape provided by each of the molding irregularities 132b and 231 by the upper molding irregularities 231 of the molding unit 230, which is attached to each of the A part of FIG. 6 and 7 are shown in an enlarged manner. Of course, a forming unit (not shown) is formed on the material 10 by the punch 121 provided in the lower mold 100 while the unevenness 11 of the material 10 is formed. .

In particular, during the forming of the concave-convex 11 of the material 10 by the upper concave-convex convex 231 and the lower concave-convex concave 132b as described above, the flow-shaped concave-convex plate 132 on which the concave-convex concave 132b is formed is formed. According to the shape of the unevenness 11 formed on the material 10 and the shape of the upper molded unevenness 231, a flow in a horizontal direction (left, right, front and rear directions) is made to match the unevenness 11. .

Therefore, the upper surface of the concave-convex 11 formed on the material 10 is exactly the concave-convex shape of the upper forming concave-convex 231 constituting the upper mold 200 and the concave-convex 11 formed on the material 10 The bottom surface of the concave-convex shape of the lower molded concave-convex 132b formed in the flow-shaped concave-convex plate 132 of the lower mold 100 is precisely consequently, the concave-convex 11 formed on the material 10 has a clear boundary thereof. The bending to the state can be made so that the molding failure can be prevented.

In addition, when the above process is completed and the upper mold 200 moves upward again and is separated from the material 10, the lift plate 131 constituting the lower mold 100 moves upward with restoring force by the elastic member 133. While the material 10 is separated from the punch 121 and the lower molding irregularities 132b, the material 10 can be smoothly conveyed. This is as shown in FIG. 8 attached.

As such, as the series of processes described above are repeated and made continuously, a pleated heat exchange fin in a state in which the unevenness 11 and the forming portion are formed is manufactured, and then the pleated heat exchange fin is installed in a post process (shown in FIG. Is omitted) and continues to be cut through the cutting process to suit the intended use, thereby completing its manufacture.

As a result, the press die apparatus for manufacturing heat exchange fins according to the present invention has an advantage that accurate shape molding of the uneven portion of the corrugated heat exchange fin can be performed even if a gap occurs according to the processing tolerance of each portion.

In particular, even if the position variation of at least one of the upper mold 200 or the lower mold 100 is changed due to long use, the above-described position variation is compensated by the flow of the floating concavo-convex plate 132 to always have an accurate shape. Unevenness (11) has the advantage that the molding is possible.

On the other hand, the press die apparatus for manufacturing heat exchange fins according to the present invention is not limited to the structure of the embodiment as shown.

That is, the lower molding unit 130 provided to the lower mold 100 is configured in a fixed state, and the upper molding unit 230 provided to the upper mold 200 may be configured to achieve a flow state. It is possible to change the design of the furnace.

10. Material 11.Roughness
100. Lower mold 110. Lower dieset
120. Punch Plate 121. Punch
130. Lower part 131. Lift plate
131a. Seating holes 132. Flow uneven plate
132a. Through hole 132b. Undercarriage irregularities
133. Elastic member 200. Upper mold
210. Upper Diceset 220. Spacer
230. Upper forming part 231. Upper forming unevenness
232. Punch Receiving Bush

Claims (6)

A lower mold having a lower molding portion for forming irregularities on the material and a punch for forming a forming portion on the material while being positioned below the material with a material installed to be movable for molding heat exchange fins; It is configured to include an upper mold having an upper molding portion which is located on the top of the material and the concavo-convex to the material with the lower molding portion,
Press molding apparatus for manufacturing a heat exchange fin, characterized in that any one of the lower molding portion of the lower mold and the upper molding portion of the upper mold is fixedly installed and the other molding portion is installed to flow in the horizontal direction. The method of claim 1,
The lower mold is
A lower dieset forming a lower base,
In addition to being fixed to the upper surface of the lower die set, the upper surface is provided with a lower plate and comprises a punch plate formed by the punch for upwardly projecting the punch for forming the forming portion on the material,
The lower molding part
A lift plate formed on the inner surface of the punch plate and having a seating hole formed therein;
In the seat hole of the lift plate is installed to be flowable in the horizontal direction, the upper surface is formed with a lower molded concave for forming the concave-convex on the material, the inner side is a flow-type concave convex formed by the through hole for the penetration of the punch Press mold apparatus for producing heat exchange fins, characterized in that comprising a plate. 3. The method of claim 2,
The horizontal direction of the flow of the uneven plate is
Press mold apparatus for producing heat exchange fins, characterized in that at least one of the left and right direction or the front and rear direction perpendicular to the advancing direction of the material is included. 3. The method of claim 2,
The punch and the lower through hole of the flow-type concave-convex plate through which the punch penetrates are formed to have a gap for stable operation of the punch,
Pressable apparatus for manufacturing heat exchange fins, characterized in that the flowable distance of the flow-type concavo-convex plate is set to be equal to or larger than the gap between the punch and the lower through hole. 3. The method of claim 2,
The lift plate is installed to prevent the flow in the horizontal direction and the press die device for heat exchange fin manufacturing, characterized in that the elastic movement in the vertical direction is installed. The method of claim 1,
The upper mold is
In addition to forming an upper base, the bottom surface includes an upper die set in which the upper molding part is installed,
The upper molding portion
Press molding apparatus for producing heat exchange fins, characterized in that the upper surface formed irregularities forming the irregularities on the bottom surface of the material and the punch receiving bush through which the punch is accommodated.

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