KR100794109B1 - Pin module and its installing method and press apparatus for curve surface comprising the same - Google Patents

Abstract

Two opposed pin modules of a press for forming curved surface on a metal sheet is provided to reduce the number of devices for adjusting height and to prevent deformation of pin structure such as buckling of pin structure. Two opposed pin modules comprising an upper pin module(100) with pin structures(110) and a lower pin module(200) with pin structures(210) are arranged by placing a metal sheet to be formed in between the modules. The upper pin module defines a profile of the upper surface with a desired configuration by positioning an edge of each pin structure at the desired height while the lower pin module defines a profile of lower surface corresponding to the profile of the upper surface by positioning an edge of each pin structure in the lower pin module. Pin structures in the upper pin module and the lower pin module are arrayed being apart from adjacent pin structures on sides. The array of pin structures spaced apart from each other helps to reduce the number of height control unit. Between the pin structures, a spacer(120 or 220) is disposed to reinforce the side of pin structure not to be deformed by buckling during a pressing process of the metal sheet.

Description

PIN MODULE AND ITS INSTALLING METHOD AND PRESS APPARATUS FOR CURVE SURFACE COMPRISING THE SAME}

1 is a perspective view showing an overall curved press apparatus including a pin module according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a part of the pin module shown in FIG. 1. FIG.

3 is an exploded perspective view illustrating main parts of the pin module illustrated in FIG. 2.

4 is a view for explaining the operation of the pin module according to an embodiment of the present invention.

5 is a view illustrating a guide structure of a pin module according to various embodiments of the present disclosure.

<Code Description of Main Parts of Drawing>

100, 200: pin module 110, 210: pin structure

112, 212: pin pillars 114, 214: pinheads

120, 220: spacer 260: spring

The present invention relates to a curved press apparatus for curved forming a metal sheet, and more particularly, includes a plurality of fin structures having a variable height, and to form a curved surface of a double curvature on the metal sheet. The present invention relates to a multi-point pin module of a curved press device used as a punch or a mold and a method of installing the same.

In general, a stationary mold press apparatus using a stationary mold is used as an apparatus for curved surface forming a metal sheet. However, the press apparatus using such a fixed mold is not suitable for small quantity production of a large variety of products due to the increase in the mold processing cost since the mold has to be re-made according to the new design when the design of the product is changed.

On the other hand, in the related art, a technique of using a punch assembly or a die assembly composed of a plurality of height-adjustable pin structures in a press apparatus for forming a curved surface of a metal sheet has been developed. U.S. Pat.Nos. 4,212,188, 5,546,784, 6,012,314, and JP 06-226365 disclose a technique for adjusting the shape of a punch or die for forming a curved surface of a plate by varying the height of individual fin structures. Is disclosed.

Among them, the prior art disclosed in US Pat. No. 4,212,188 and Japanese Patent Laid-Open No. 06-226365 is arranged such that each of the plurality of fin structures whose height is adjusted by a motor or the like is spaced apart from other neighboring fin structures. Such spaced arrangement of fin structures is advantageous in that it reduces the number of fin structures per area of the metal sheet to be curved and the number of devices for adjusting the height of the fin structures, but during press operation, It has been found by the present inventors that there is a big problem that such unwanted deformations occur.

In addition, US Pat. Nos. 5,546,784 and 6,012,314 disclose the construction of a pin module arranged such that a plurality of height-adjusted pin structures are closely packed. This conventional fin module has the advantage of eliminating deformations such as buckling of the fin structure, but the number of fin structures is excessively large, and accordingly, the number of height adjusting devices of the fin structures including expensive motors is excessively large, It has been found by the present inventors that there is a problem that the economy is greatly reduced.

Accordingly, there is a need in the art for a fin module capable of reducing the number of fin structures and height adjusting means of the fin structures and at the same time preventing deformation such as buckling of the fin structures.

The technical problem of the present invention is to reduce the number of means for adjusting the height of the fin structures and the fin structures with respect to the area of the metal plate by arranging the space between the fin structures, reducing the manufacturing cost and maintenance cost of the curved press device On the other hand, even if the fin structures are spaced apart, to provide a pin module that can strictly limit the deformation, such as buckling that may occur in the fin structure during the surface pressing process.

Another technical problem of the present invention is to provide a method of manufacturing a fin module by arranging the spaced apart between the fin structures, and reinforcing between the fin structures to prevent buckling deformation of the fin structures.

According to one aspect of the present invention, there is provided a pin module of a curved press apparatus disposed above or below the metal sheet for the curved surface processing of the metal sheet. The pin module includes a plurality of fin structures arranged spaced apart from each other, and spacers slidably installed between neighboring pin structures, which spacers are used to form the sheet metal using the pin module. This prevents unwanted deformations such as buckling of the fin structures provided in the pin module.

According to a preferred embodiment of the present invention, each of the plurality of fin structures, the pin head for pressing the metal plate during the press working, and the pin head is provided at the tip, the longitudinal direction so as to slid the spacer It includes a pin pillar formed with a guide for guiding. The pin module further includes at least one spring for biasing the spacer towards the pin head. The pin pillar may include guides slidably guiding the spacers in directions opposite to each other, and may further include guides slidably guiding the spacers in directions perpendicular to each other. Most preferably, the pin pillar has a square pillar structure having four side surfaces each having one guide.

According to another aspect of the present invention, a pin module installation method of a curved press device is provided. The method is to install the fin structures to be spaced apart from each other, and slidably install a spacer between the adjacent fin structures to prevent buckling of the fin structure during press working with the fin structures.

Example

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

1 is a perspective view of the curved press apparatus according to an embodiment of the present invention as a whole, Figure 2 is an enlarged perspective view of a portion of FIG.

As shown in FIG. 1, the curved press apparatus according to the present embodiment serves as a pair of pin modules, that is, an upper pin module 100 serving as a punch for pressing and a metal sheet supporting die for pressing. It includes a lower pin module 200. In addition, the curved pressing device may be curved to form a metal sheet material disposed therebetween by the mutual punching action of the upper pin module and the lower pin module 200.

The upper and lower pin modules 100 and 200 respectively have a plurality of pin structures 110 and 210 and a vertical height adjusting unit 130 for adjusting the height of each of the pin structures 110 and 210. 230). Each of the height adjustment units 130 and 230 is installed to correspond to the corresponding pin structures 110 and 210, and, for example, through a motor driving, the pin structures 110 and 210 of the upper and lower pin modules 100 and 200. Adjust each one of the heights. Most preferably, the height adjusting unit (130, 230) is made of a structure for moving the pin structure (110, 210) facing the tip of the feed screw by rotating and linearly moving the feed screw by a motor drive, but in another way As such, a method of adjusting the height of the fin structures 110 and 210 may also be used.

In an embodiment of the present invention, each of the upper and lower height adjustment units (130, 230), the pin structure 110, corresponding to the upper support plate 140 and the lower support plate 240 is fixedly installed 210 is used for height adjustment. The upper support plate 140 and the lower support plate 240 are attached to and supported by four pillars 2 forming the outer frame. In addition, the upper and lower guide plates 150 and 250 which guide the upper and lower pin structures 110 and the lower pin structures 130 to be slidably up and down are installed below and below the upper support plate 140. . The upper and lower guide plates 150 and 250 are also supported by their vertices attached to the four pillars 2 described above.

As best shown in FIG. 2, the fin structures 110 of the upper fin module 100 and the fin structures 210 of the lower fin module 200 are bound to each other on the basis of a metal plate (not shown) to be curved. Facing. In addition, the upper pin module 100 forms an upper curved profile by the tips of the height-adjusted upper pin structures 110, and the lower pin module 200 is connected to the tips of the height-adjusted lower pin structures 210. Thereby forming a lower curved profile corresponding to the upper curved profile.

In each of the upper and lower fin modules 100 and 200, the fin structures 110 and 210 are arranged spaced apart from other fin structures 110 and 210 neighboring laterally. The spaced arrangement of the fin structures 110 and 210 may correspond to the number of the fin structures 110 and 210 and the height adjusting units 130 and 230 corresponding to the pin structures in the corresponding pin modules 100 and 200 (see FIG. 1). Contribute significantly to reducing

In this case, a spacer 120 or 220 is installed between two fin structures 110 and 110, or 210 and 210 that are adjacent to the side. The spacers 120 and 220 reinforce the side surfaces of the fin structures between neighboring fin structures to suppress buckling deformation of the fin structures during the press working of the metal plate. The spacers 120 and 220 may be slidably installed on the side surfaces of the fin structures 110 and 210 while having a length smaller than that of the fin structures 110 and 210. Such a slidable structure of the spacers 120 and 220 enables the pin structures 110 and 210 to be height-adjusted smoothly despite the side reinforcement of the fin structures 110 and 210.

According to an embodiment of the present invention, the fin structures 110 and 210 are composed of pin pillars 112 and 212 and pin heads 114 and 214. The pin heads 114 and 214 substantially contact the upper and lower surfaces of the metal plate to determine the curved shape of the metal plate, and the pin pillars 112 and 212 support the pin heads 114 and 214. At the same time, the spacers 120 and 220 are slidably installed. The structure of the pin module will be described in more detail with reference to FIG. 3 below.

3 is a view for explaining the pin module according to an embodiment of the present invention, for convenience of description, the member number of the lower pin module is used, the structure shown in Figure 3 above the upper pin module and the lower pin Of course, it is a structure that can be applied to all modules.

As shown in FIG. 3, the pin pillar 212 includes guides 213 slidably guiding the spacer 220 in directions opposite to each other (ie, opposite to 180 degrees). In addition, the pin pillars 212 may include guides 213 for slidably guiding the spacers 220 in directions perpendicular to each other. As described above, the pin pillar 212 includes a guide 213 for guiding the spacer 220 in directions opposite to each other and in a direction perpendicular to each other, whereby matrix arrangement of the fin structure 210 is possible. In more detail, the pin pillar 212 has a square pillar structure having four side surfaces, each of which is adjacent to each other to form a right angle. In addition, four side surfaces of the pin pillar 212 are formed with guides 213 in a longitudinal direction, and at least one of the guides 213 is provided with a spacer 220 to be slidable.

The spacers 220 are installed to be slidably inserted into the guides 213 of the two pin pillars 212 adjacent to each other by protrusions 222 provided on both sides, but this is not a limitation of the present invention. As shown in the cross-sectional view of the, in various forms and structures, the spacer 220 may be slidably installed in the guide 213 of the pin pillar 212.

The spacer 220 is configured such that its height is limited near the tip of the fin structure 210. In this embodiment, the spacer 220 is caught by the pin head 214 at the tip of the fin structure 210. Is installed to be limited. In this case, the spacer 220 is biased toward the pin head 214 at the tip of the fin structure 210 by a pair of springs 260 disposed below the spacer 220. As above, the spring 260 biases the spacer 220 toward the pinhead 214, so that the spacers 220 are always positioned near the tip of the pin structure 210 that is subjected to a large load during the press working of the metal plate. Can be.

4 is a view for explaining the operation of the pin module, Figure 4 is a pin structure of the upper and lower pin modules (100, 200) whose height is respectively adjusted by the height adjustment unit (130, 230 (see Figure 1)) 110 and 210 are shown. Referring to FIG. 4, spacers 120 and 220 positioned between neighboring fin structures reinforce side surfaces of neighboring fin structures. At this time, the spacers 120 and 220 are deflected to the tips of the fin structures 110 and 210 by springs (see FIG. 3), and are caught by the pin heads 114 and 214 of the fin structures 110 and 210. The height is limited.

Therefore, despite the large load caused by the press working of the metal sheet, the pin structures 110 and 210 can be suppressed by buckling by side reinforcement of the spacers 120 and 220. In addition, since the spacers 120 and 220 are always located near the tip of the fin structures 110 and 210 which are most likely to be buckled by a spring, the above-described buckling can be further suppressed.

While the invention has been described above with reference to specific embodiments, various modifications, changes or modifications may be made in the art within the spirit of the invention and the appended claims, and thus, the foregoing description and drawings It should be construed as illustrating the present invention, not limiting the technical spirit of the present invention.

According to the present invention, by the spaced arrangement of the fin structures, it is possible to greatly reduce the number of the fin structures and the number of means for adjusting the height of the fin structures, while the spaced fin structures can be used to form the curved surface of the metal sheet. It is possible to strictly block deformations such as buckling of the fin structures caused by the spacers between the fin structures. Furthermore, by arranging the fin structures spaced apart, the space under the pin pillar is widened, which makes it easy to secure the assembly space of parts such as, for example, the parts of the height adjusting unit of the fin structure.

Claims (10)

In the pin module of the curved pressing device disposed on the upper or lower portion of the metal sheet for the curved surface processing of the metal sheet, A plurality of fin structures arranged spaced apart from each other; And a spacer module slidably installed between neighboring pin structures. The method of claim 1, wherein each of the plurality of fin structures, A pin head which presses the said metal plate material at the time of press work, The pin head is provided at the tip, and the pin module of the curved press apparatus, characterized in that it includes a pin column formed with a guide for slidably guiding the spacer in the longitudinal direction. The pin module of claim 2, further comprising at least one spring for biasing the spacer toward the pin head. The pin module of claim 2, wherein the pin pillars include guides slidably guiding the spacers in opposite directions. The pin module of claim 2, wherein the pin pillars include guides slidably guiding the spacers in directions perpendicular to each other. The pin module of claim 2, wherein the pin pillar has a quadrangular column structure having four side surfaces each having one guide. As a pin module installation method of a curved press device, Install the fin structures apart from each other, By slidably installing a spacer between the adjacent pin structures, Pin module installation method of the curved press device characterized in that to prevent the buckling of the pin structure during the press working using the pin structures. In the curved press device comprising a pair of pin modules respectively disposed on the upper and lower portions of the metal sheet for the curved surface processing of the metal sheet, wherein each of the pair of pin modules, A plurality of fin structures arranged spaced apart from each other; Curved press device comprising a spacer slidably installed between the adjacent pin structures. The curved press device according to claim 8, wherein a pin structure for pressing a metal plate is provided at a tip of a pin pillar that guides the spacer so as to be slidable to form the fin structure. The curved press apparatus according to claim 9, wherein the spacer is elastically supported by a spring so that the spacer is deflected toward the pin head.

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