JPH0428421A - Device for forming corrugated sheet - Google Patents

Abstract

PURPOSE:To form the corrugated sheet with the arbitrary shape on the head part of the wave mountain of high accurate pitch by clamping the band like metallic sheet with the holding block, lowering the die from the upper side, forming the wave mountain on the metallic sheet, and further, pressing it with the upper and the lower form- pressing components. CONSTITUTION:The material to be worked 11 of the band like metallic sheet is held on the holding blocks 22a, 22b which are able to open and close, and is clamped by lowering the die 21a, 21b from the upper side. By lowering this dies 21a, 21b further, it is moved and closed together with the holding blocks 22a, 22b with the hypotenuse cam 26a, 26b. Therefore, the material 11 to be worked is formed to the wave mountain 12. In this same time, it is clamped from upper side and the lower side and formed with the upper and lower head part form-pressing components 50, 51 set on the center of the dies 21a, 21b and the holding blocks 22a, 22b. The head parts of this pressing components 50, 51 is formed respectively to the flat or the projecting and recessing surface matching to the required waved mountain shape. Therefore, in spite of the quality of the material, without the deviation of the shape and the pitch for the waved mountain 12, and the corrugated sheet with the rectangle or the other arbitrary shape of its head is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a forming apparatus for a corrugated plate, and particularly to a forming apparatus suitable for forming steps of a passenger conveyor.

[Conventional technology]

Generally, wave crest boards are used as floorboards for buildings and as a surface material for stairs.

Alternatively, it is widely used for various purposes such as deck plates for vehicles.For example, in recent passenger conveyors such as escalators and electric guideways, stainless steel corrugated plates are used as the surface material of the steps for passengers to board. are doing.

FIG. 5 is a schematic side view showing the step and comb board portion of the passenger conveyor, and FIG. 6 is an enlarged perspective view of the part 2 in FIG. 5.

As shown in the figure, the passenger conveyor has a parapet section 1. Step 2
．． It is composed of a riser 32, a boarding floor 4, a comb board 5, etc. A large number of waves 6 are formed on the riser 3, which mesh with a large number of teeth 7 on the comb plate 5. Therefore, such step 2. riser 3 wave 6
The accuracy, especially the pitch accuracy P of the top part, must be extremely precisely finished1, and precision machining is an essential condition for this type of product.

Figure 7 shows a conventional wave plate with a large number of waves.

It was molded as shown in FIGS. 8, 9 and 10.

Zunawaji, in FIG. 7, 20 indicates a punch 9 having protrusions corresponding to the recesses on the back side of the corrugations of the corrugated plate to be formed; a workpiece 1 consisting of a band-shaped metal plate centered on the punch 20;
A die 21a having a divided configuration so as to be in the front and back of the transfer direction,
21b, punch 2 in the same way as these dies 21a and 21b.
Holding block 22 that holds workpiece material]-1 before and after 0
a.

221) are arranged. This holding block 22a.

22b is supported by a cushion notebook 24'' through a needle roller 23 so as to be able to move lightly in the direction of transport of the workpiece 11 (arrow 49). This cushion notebook 24 also has a holder 26 that can be moved vertically.
is maintained. Note that the cushion notebook 24 is always subjected to forces in two directions by the elastic body 25. The holder 26 is provided with hypotenuse cams 26a and 26b, and a holding block 22a.

The holding blocks 22a and 22b are configured so that when the die 22b is pushed from above, the holding blocks 22a and 22b move in the direction of the arrow A) toward the punch 20.8 On the other hand, the die 21a having a split configuration,
An elastic body 27 that drives the dies 21a and 21b in the direction of separating them (indicated by the arrow H) is provided at the opposing portion of the die 21b. In addition, the dies 21a, 21b and the holding block 22
a and 22b are connected by bins 28n and 28b so that they can move together in the transport direction of the workpiece 1]7. These bins 28a and 28b contain the dies 21a and 21b.

It is configured to slide so as not to impede downward movement. Further, the dies 21a and 21b are held in a holder 30 via needle rollers 29 so as to be lightly moved in the direction of transport of the workpiece 1.

Furthermore, the holder 30 is supported by a press ram (not shown).

Next, the operation will be explained. As shown in FIG. 9, when the press ram is lowered, the dies 21a and 21b move in the convex direction of the arrow, and the workpiece 11 is held between the holding blocks 22a and 22b. Furthermore, die 21a.

When 21b is pushed down in the convex direction of the arrow, the holding block 22a
, 22b is a hypotenuse cam 26a of the holder 26.

261) to move in the direction of arrow A. Similarly, the holding blocks 22a, 22b and the bin 28a.

The dies 21a and 21b connected by 28b are also moved in the two directions of the arrows. When the press reaches the bottom dead center, as shown in FIG.
a and 21b are formed into wave crests. Thereafter, this process was repeated to obtain a wave crest plate 1.1 having a large number of semicircular waves 12 at the top of the wave crest as shown in Figure J, 1.

Next, as shown in FIG. 12, the wave crest 12 of the corrugated plate 11 (part A), which has a semicircular roundness formed at the top of the wave crest, is fitted into the support mold 4], and the top of the wave crest is formed. A substantially U-shaped grooved roll 42 was rolled to obtain a rectangular wave crest 13 (section B) having a flat portion at the top of the wave crest.

However, in this method, the workpiece 11. For roll forming from the top end of the wave crest 12, the roll 42 and the workpiece 1-
Due to changes in the friction coefficient of 1 and changes in material properties such as the elongation rate, Young's modulus, and yield strength of the strip metal plate, the amount of collapse of the top wave ridge of workpiece J1] 2 is not the same, and each wave crest Variations in height, twisting, and folding occur, and as a result, the pitch of each shaped wave]3 becomes such that P1≠P2, resulting in large variations in accuracy. Therefore, it is unsuitable for applications such as passenger conveyors, which require high precision in the pitch between each wave.

[Problem to be solved by the invention]

The purpose of the present invention is to improve the elongation rate, Young's modulus, and
To provide a method for processing a wave crest plate having a rectangular or arbitrary shape at the top of the wave crest and having a high precision pitch without variations in the height of the wave crest, twisting, sagging, etc. due to changes in material properties such as yield strength, etc. be.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a flat surface or an uneven groove on the top of the lower part forming presser, and a flat surface or uneven groove on the top of the top forming presser. Ta.

[Effect]

The band-shaped metal plate is held between a die and a holding block at a position away from the lower part molding presser, and in this state, the die and holding block are moved toward the lower part forming presser and brought closer to the lower part forming presser. The flat surface of the top of the dip-formed presser, or the flat surface of the top of the top-formed presser with uneven grooves, or the top of the wave crest is pressure-formed with the uneven surface, and the flat surface is formed. It is possible to form uneven grooves.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

A top forming presser 50 for forming a wave crest and a lower portion forming presser 51 provided at an opposing position are fixed, and a workpiece 1 made of a band-shaped metal plate is fixed around the first top forming presser 50.
The die 21 has a divided structure so that it is front and rear in the transport direction of
a and 21b are arranged. These dies 21a, 21b
Similarly, holding blocks 22a and 22b that hold the workpiece 11 are located before and after the lower part molding presser 51. These holding blocks 22a and 22b hold the workpiece 11
It is supported on a cushion plate 24 via needle rollers 23 so that it can be moved easily in the transport direction (arrow 42). Further, this cushion plate 24 is held by a holder 26 so as to be movable upward and downward. Note that the cushion plate 24 is always subjected to an upward force by the elastic body 25. The holder 26 has hypotenuse cams 26a, 2.
6b is provided, and the holding blocks 22a, 22b are configured to move in the direction (arrow A) toward the lower portion molding presser 51 when the holding blocks 22a, 22b are pushed from above. On the other hand, an elastic body 27 that is driven in a direction (arrow E) to separate the dies 21a and 21b is provided at an opposing portion of the dies 21a and 21b in the split structure.

In addition, the dies 21a, 21b and the holding blocks 22a, 22
b are connected to each other by bins 28a and 28b so that they can move together in the direction of transport of the workpiece 11. This bottle 2
8a and 28b are above the dies 21a and 21b.

It is configured to slide so as not to impede downward movement. Further, the dies 21a and 21b are held in a holder 30 via needle rollers 29 so as to be lightly moved in the direction of transport of the workpiece 11. Further, the holder 30 is supported by a press ram (not shown).

Next, the operation will be explained. When the press ram (not shown) is lowered according to FIG. 1, the die 21a is removed.

21b and the first top molding presser 50 move in the convex direction of the arrow, and sandwich the workpiece 11 between the dies 21a, 21b and the holding blocks 22a, 22b. Furthermore, the dies 21a, 2
1b in the convex direction of the arrow, the holding block 22a,
22b is moved in the direction of arrow A by the oblique side cams 26a and 26b of the holder 26. Similarly, this holding block 2°
2a, 22b and the die 2 connected by bins 28a, 28b
1a.

21b also moves in the two directions indicated by the arrows. When the bottom dead center of the press is reached, the first top molding presser 50 and the bottom molding presser 51
Pressure is applied to the top part 12 of the wave crest, and the pressurized material 11 is formed into a wave crest.

That is, before the workpiece 11 comes into contact with the lower part molding presser 51, the die 21a,
21b and the holding blocks 22a and 22b, and in this state contacts the lower part molding presser 51. When the workpiece 11 comes into contact with the lower part molding presser 51, the die 21a
, 21b and the holding blocks 22a, 22b approach the side of the lower part molding presser 51 while descending and press the workpiece 11.
is bent based on the lower part molding presser 51.

Then, when the press reaches the bottom dead center, the top part 12 of the wave ridge is pressure-formed by the lower part forming presser 51 and the first top forming presser 50, and finally the wave crest as shown in FIG. 2 is formed. 6
Next, the workpiece 11 is fed in the direction of arrow O by the developed length of one corrugation 12 (the feeding device is not shown), and one corrugation 1-2 is formed by the method described above. By repeating this process, a continuous wave plate can be obtained.

By the way, there are many possible shapes for the wave crest 12, but typical shapes are shown in Figure 31 (a) to (e). Figure 3 (a) shows a wave crest where the top of the wave crest 1.2 is rectangular. (b) is wave mountain]
A wave crest with a plurality of irregularities in the longitudinal direction of the top of No. 2, Fig. 3 (C) is a wave crest] - A wave mount with a plurality of triangular grooves in the longitudinal direction of the top of No. 2, Fig. 3 (D) is the top width of the wave crest 12 Figure 3 (E) is a wave crest with multiple unevenness in the radial direction, Figure 3 (E) is a wave crest with multiple triangular grooves in the radial direction. ) The upper pressurizing surface of the upper top molding presser 50 and the lower pressurizing surface of the lower layer molding pressurizer 51 are shown in FIG. The two-part pressurizing surface 50A of the upper molding presser 5o that pressure-forms the wave ridges 12 in (a) and the lower pressing surface 51A of the lower molding pressurizer 51- are shown, and the pressing surfaces are formed in a rectangular shape.

@ Figure 4 (b) shows the upper pressing surface 50B of the two-section molding presser 50 and the lower pressing surface 51B of the lower layer molding presser 5 for pressure-forming the wave crest 12 in FIG. 3 (b). The pressure surface is formed with a plurality of projections and depressions in the longitudinal direction. Figure 4 (c) is the third
Upper layer forming pressurizer 5 that presses and forms the wave peaks 12 in Figure (c)
0' two-part pressure surface 50C and the upper pressure surface 5]-C of the lower molded presser 51, the pressure surface is formed into a plurality of triangular grooves in the longitudinal direction. FIG. 4(d) shows the upper pressing surface 50D of the two-section molding presser 50 and the lower pressing surface 51D of the lower layer molding presser 51 for pressure-forming the wave crest 12 in FIG. 3(d). The pressure surface extends in the width direction and is formed into a plurality of concave and convex portions. 8. Figure 4 (E) is the wave ridge of Figure 3 (E). 50E and the lower pressurizing surface 51 of the lower layer molding presser 51°, the pressurizing surface is formed into a plurality of triangular grooves in the width direction.According to this embodiment, the workpiece 1 is a band-shaped metal plate. Die 21.1 has a split configuration. a, 21b and holding block 22a
, 22b, and in this state lower layer molding presser 51
After bending with the top of the wave crest 12 as a reference, the top of the wave crest 12 is pressed by a lower layer forming presser 5 and an upper layer forming presser 50 to form a rectangular or arbitrary shape. For this reason, the elongation of the workpiece material 1] that occurs during press working does not occur. Therefore, during the forming of the example, changes in the friction coefficient between the die and the workpiece material, the elongation rate of the workpiece material, and the Since there is no effect of changes in material properties such as yield strength and yield strength, the amount of pressure forming on the tops of waves 1 and 12 is the same, eliminating variations in the height of each wave crest, twisting, and folding, and improving the pitch accuracy between each wave. can be improved.

In addition, by forming the tops of the wave crests 12 into arbitrary shapes such as rectangular or uneven shapes, slipping is prevented and safety is increased.

〔Effect of the invention〕

According to the present invention, it is possible to obtain in one step a continuous corrugated plate in which the pitch between each corrugation is high and the top of the corrugation has an arbitrary shape such as rectangular or uneven.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views showing each process of a mold according to an embodiment of the present invention, FIGS. ) to (e) are shown in Figure 3 (a) -
(E) A partial perspective view of the upper layer molding presser and the lower layer molding presser that are molded into the shape of (E), Figure 5 is a side view showing the step of the passenger conveyor and the comb board part, and Figure 6 is the same as that of Figure 5. Figures 7 and 8 are cross-sectional views showing each step of the conventional wave crest forming method, and Figure 9 is a wave crest formed by the conventional wave crest forming method shown in Figs. 7 and 8. FIG. 10, which is an external view of the board, is a perspective view of forming the corrugations on the corrugated plate shown in FIG. 9 with a roll, by a conventional method. 11...Work material, 1.2...Wave mountain, 21a, 21
b...Die, 22a, 22b...Holding block, 5
o...Upper layer molding presser, 50A, 50B, 50G
, 50D. 50E...Upper pressure surface, 51...Lower molded presser, 51A, 51B, 51C, 51D, 51E-...Lower part concave hole (In (B) (8) (E) (B) (E) Diagram Ryobacterium No.

Claims (1)

[Claims] 1. A lower top molding presser having protrusions corresponding to the wave crests formed on the band-shaped metal plate, and dividing the belt-shaped metal plate into front and rear parts in the transport direction with the lower top forming presser as the center. a die provided with grooves facing each other; a holding block that holds the band-shaped metal plate between the die; an expansion mechanism that interlocks to open the holding block when the die is located at a top dead center; In the wave crest forming apparatus, the wave crest forming apparatus includes a closing mechanism that moves the holding block to the side of the lower top forming presser to close the separated die when the die is located at the bottom dead center, the wave crest having a rectangular top part; Alternatively, in order to mold into an arbitrary shape, the top of the lower top molding presser is provided with a flat lower pressing surface or an uneven lower pressing surface, and the top of the wave ridge is pressed at a position facing the lower top molding presser. 1. An apparatus for forming a corrugated plate, characterized in that an upper top forming presser for forming is provided, and the top of the upper top forming presser is provided with a flat upper pressing surface or an uneven upper pressing surface.