JPS58157530A - Composite press die for trim flange up - Google Patents

Abstract

PURPOSE:To keep clearance for trimming constant at all times without influenced by other sliding position by enabling an upper edge to slide and providing a drive cam that guides the upper edge when upper and lower holders draw near. CONSTITUTION:When an upper holder 1 is lowered, a panel part W is held by an upper pad 8 and a cushion pad 5. Then, a slide cam 20 comes into slide contact with a drive cam 22, and the cam 20 slide by a specified length in the direction of the pad 8 while compressing and deforming an elastic body 21. Consequently, a fixed clearance for trimming necessary for trimming between an upper edge 17 and a lower edge 6 is secured. When the holder 1 is further lowered, flange up work F is performed by a flange die 3 and the edge part 8a of the pad 8 as usual, and trimming is carried out on the periphery of the part W by shearing action of edges 17, 6 when the holder 1 arrives at the bottom dead center. The clearance between edges 17, 6 is determined only by slide contact of cams 22, 20, and can be kept constant at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called composite 0-rus type in which trim processing and flange alignment 1 processing are performed simultaneously within the same mold.

Conventionally, as a press die for this type of trim/7-range up/down L, there is a structure shown in FIG. 1, for example. In addition, in FIG. 1, the illustration of the press machine is omitted. The same figure is above! 1 is lowered to indicate the machining status, 1 is the upper holder, and 2 is for futsunji lug machining (71)
The lower leg holder 8 is formed integrally with the lower holder 2, and is elastically supported by the lower leg holder 4 so as to be able to move up and down with respect to the lower holder 2. ing. A lower blade 6 as a trim cutting blade is integrated into a part of the cushion pad b.
& is worn.

On the other hand, the upper holder IK is integrally attached with a trim cutting blade tnh upper blade 7 that controls p trim processing in cooperation with the lower blade 6, and an upper blade 7 corresponding to the cushion pad 6. The pad 8 is elastically supported via an elastic body (for example, urethane) 9 so that it can move up and down. Damn it 1
The edge s8m of this upper pad 8 is the flange die 8.
The movable stroke of the upper pad 8 is determined by a pad retainer (not shown). An upper holder 1 including the upper blade 7 and upper pad 8 is erected on the lower holder 2 and moves up and down along nine guide posts 10.

With the press mK as described above, when the upper holder 1 is at the upper limit position, it is pushed up by the butterfly, the cushion pin 4, and the pressure surface, which is the upper surface, is slightly It is stationary in a position that is high. In ζζ.

When the panel part W is placed on the cushion pad 6 which is in a stationary state and the upper holder 1 is lowered, the panel part W is held between the cushion pad 6 and the seven-piece pad 8.
Furthermore, since the elastic body 9 is compressed and deformed, the upper pad 8 moves upward relative to the upper holder IK. Then, when the upper pad 8 reaches the upper limit position relative to the upper holder 1, the cushion pad 5 is pushed down relative to the lower holder 2 from this point, and the 72-inch die 8 and the edge 1@18a of the upper pad 8 perform a 7-range up process. F is applied.

Thereafter, when the upper holder 1 further descends, the p-panel component Wo end 111K) is rim-processed near its bottom dead center by the shearing action based on the cooperation between the upper blade 7 and the lower blade 6. In other words, the trim processing and the seven flange cutting operations are performed within the same lid by one lowering operation of the upper holder l.

However, with such conventional press lids,
Between upper holder l and guide post 1o.

In addition, since the structure is such that sliding movements are performed between the guide member 11 and the lower holder 2, which are provided integrally with the cushion pad 8, these sliding movements can be easily controlled.
To achieve this, it is necessary to ensure a certain amount of clearance for each sliding part. Looking at this rounding and the trimmer exchange clearance between the upper blade 7 and the lower blade 6, the sliding clearance for each of the previous parts is added to the taliatness for the skeleton trim, so the trim clearance is larger than necessary. Because of the large 9K, burrs will be generated in the body trimming area during trimming. E9 According to the above structure, depending on the clearance between the lower holder 2 and the guide member 11, the cushion pad 5 swings laterally due to the pressure forming force during processing, resulting in variation in the trim clearance. In the worst case, the upper and lower blades may interfere with each other, causing the blade to spill. These phenomena are
This becomes more noticeable as the sliding parts at the tip of the p-part become more abrasive.

In view of the above-mentioned points, the present invention was made with the aim of always keeping the above-mentioned trim clearance constant without being influenced by other sliding parts.To achieve this purpose, the present invention has been made. In the above, the upper blade is configured to be able to slide in the horizontal direction, and the cushion pad is provided with a drive cam that guides the upper blade when the upper and lower holders approach.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In addition, please refer to section 9. for explanation of this implementation. Components that are the same as those in the prior art example are designated by the same reference numerals.

That is, FIGS. 2 and 8 show an embodiment of the present invention, in which a slide cam 20, which has an upper blade 17 as a rim cutting blade attached to the lower surface of an upper holder l, is mounted in a horizontal direction. The slide cam 51 is supported so that the slide cam 20 can slide in the direction shown in FIG.
An elastic body 21 is interposed between the upper holder 1 and the hanging wall portion 1a of the upper holder 1. On the other hand, the lower holder 2 has a drive cam S that can slide into sliding contact with the slide cam 20! 2 is integrally formed to protrude, and as shown in the figure, the drive cam 8s and slide cam! The upper blade 17 and the lower blade 6 are in sliding contact with each other and are in good condition.
There is a clearance for a pair of trims in between.

According to the above configuration, when the upper holder 1 is lowered from its upper limit position, the panel component W is first held between the upper pad 8 and the shoe pad 6, and then the slide cam 20 slides onto the drive cam 2g. Since they are in contact with each other, the slide cam 20 compresses and deforms the elastic body 511 and slides by a certain amount in the direction of the upper pad 8, thereby securing a certain amount of trim clearance necessary for trim processing between the upper blade 17 and the lower blade 6. do. Then, when the upper holder l descends, the upper holder 1 is moved to the bottom dead center. Near the 9th point, the peripheral edge of the panel part W is trimmed by the shearing action of the upper blade 17 and the lower blade 6.

ζHere, the trim clearance between the upper blade 17 and the lower blade 6 is determined only by the sliding contact between the drive cam 22 and the slide cam 20, and is always −ji! is maintained. Therefore, even if there are sliding tags between the P1 upper holder 1 and the guide post 10 and between the lower holder 2 and the guide member 11, which are different from the conventional ones, this will have no effect on the previous trim clearance. isn't it.

When the trimming process is completed and the upper holder 1 is moved to the bottom dead center, the upper holder 1 rises again to complete one cycle.

As is clear from the above explanation, according to Jin's invention, the trim clearance between the upper blade and the lower blade is determined only by the relationship between the slide cam and the drive cam.
The shoe pad can be kept constant without being affected by the sliding movement of the middle and upper holders, etc., and has the effect of preventing interference between the blades during the occurrence of burrs in the trimming area of panel parts.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the conventional press die for trim/7 rungian 1 processing in a processed state, and Fig. 2 is an unprocessed view showing the configuration of the composite press die for trim/7 rungian 1 of the present invention. A cross-sectional view, FIG. 8 is a cross-sectional view showing the processing state of FIG. 2. DESCRIPTION OF SYMBOLS 1... Upper holder, 2... Lower holder, 8... Fufunjidai, 5... Cushion pad, 8... Lower blade, 8... Upper pad, 17... Upper blade, 20...・
・Slide cam, 22...Drive cam, W...Panel parts. Figure 1

Claims (1)

[Claims] (1) An upper blade attached to the upper holder, an upper pad elastically supported by the upper holder so as to be able to move up and down relative to the upper holder, and an upper pad integrally provided with the lower holder to cooperate with the upper pad. A 7-piece die that performs flange up processing by working, a shoe pad elastically supported by the armpit holder so that it can move up and down relative to the lower holder, and a shoe pad attached to this cushion pad that cooperates with the upper blade. In this composite press mold, the upper blade is horizontally moved, and the upper blade is horizontally trimmed. The shoes are supported by the upper holder so as to be slidable in the direction and attached to the slide cam, and the shoe base is provided with a drive cam that slides into contact with and guides the slide cam when the upper and lower holders approach. Composite press lid for trim/72 inch 1.