JPH0459974B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for closing the end of a deck plate.

(Conventional technology) Deck plates are often used as architectural flooring materials or bridge road bottom materials.
Japanese Patent Application No. 58349 discloses a method for closing the end of a deck plate during travel.

That is, in the conventional deck plate, for example, as shown in FIG.
is given, and the ridge line 33 is formed. T is the end processing length, H is the deck plate height, b is the rib height, and a is the rib width.

By the way, as shown in FIG. 8, the deck plate 30-1 has a floor plate formed by having the ribs 34 overlap and fit in the width direction of the deck plate.According to experience, the ribs 34 Concrete leakage occurred during construction in width a, and improvements were desired.

In addition, the process of closing the end of the deck plate is usually performed off-line, resulting in poor productivity.
Mass production by in-line is required.

(Problem to be solved by the invention) When closing the end of a deck plate, if the peak is simply flattened without forming a rib at the end, concrete leakage at the joint in the width direction of the deck plate can be prevented. However, if the ridges are simply flattened without forming ribs, the deck plate may be crushed in an extremely irregular bending manner and cracks may occur in the deck plate. Moreover, the shape of the crushing deformation portion is poor in appearance.

By the way, the present applicant previously filed the patent application No. 60-247166.
No. 60-247167, we proposed a method and apparatus for solving the above-mentioned problems.
In this method and device, when closing the end of the deck plate, the claw-like protrusion pre-deforms the flange part to create an S-shaped shape on the end face of the deck plate, and then crushing the peak part is performed. It is something that is done;
Although the crushing process can be performed extremely smoothly, the deck plate sometimes warps from the edge of the deck plate (the end in the length direction) to the position of the claw-like protrusion, so a solution was needed. .

The present invention makes it possible to form edges that can reliably prevent concrete leakage during construction, without the risk of cracking during processing, without warping of deck plate edges, and with high productivity. The present invention provides a device for closing the end of a deck plate.

(Means for Solving the Problems) The present invention, which solves the above-mentioned problems, is a deck plate end closing processing device that crushes the peaks at the longitudinal ends of the deck plates to close the ends. , a lower blade 23 fixed to a fixed lower blade holder 21
and an upper blade 20 fixed to an upper blade holder 14 provided integrally with an upper die 3 that is movable up and down, and an upper blade 20 that is movable up and down while the upper die 3 is urged downward by an elastic body 8-2. A suspended pedestal 10 and a trough plate holder 1 of a deck plate fixed to the pedestal 10
1, and a punch 15 for crushing the peak of the deck plate, which is fixed to the upper blade holder 14 adjacent to the side surface in the thickness direction of the upper blade 20, and whose lower end surface is slightly higher than the lower end surface of the upper blade 20. and a claw 1 having a horizontal tip facing the flange of the deck plate, which is attached to the valley plate holder 11 so as to be movable in the deck plate width direction and in the vertical direction.
6, apply the tip of the claw 16 to a predetermined location on the flange of the deck plate just before the upper blade 20, which descends together with the punch 15, comes into contact with the peak of the deck plate, and in this state, slightly tighten the claw 16. A pawl vertical movement control means for pre-deforming the flange portion to inward bend by lowering the pawl 16 by a distance, and a pawl horizontal movement control means for moving the pawl 16 horizontally away from the flange portion after the pre-deformation. It is characterized by:

(Function) In the above configuration, when the upper holder descends,
The upper blade and punch move down together, and the upper blade and punch crush the peak of the deck plate.
In this case, the upper blade contacts the peak of the deck plate slightly before the punch, so the upper blade actually pushes down the peak, and immediately after the upper blade reaches the lower blade and cuts the deck plate, The punch will completely crush the mountain.

When crushing the crest, the horizontal tip of the claw hits the flange of the deck plate just before the upper blade comes into contact with the ridge of the deck plate, thereby pre-deforming the flange to inward bend. That is, the pawl is operated under the control of the pawl vertical movement control means, and just before the upper blade hits the flange, the tip of the pawl hits the flange and in that state descends a certain distance to pre-deform the flange. After this pre-deformation is completed, the pawl is separated from the flange portion by the pawl horizontal movement control means, so that the pawl does not interfere with the crushing process using the punch.

As described above, since the claws give the flange a pre-deformation of inward bending, buckling starts at this pre-deformation point during crushing, thereby obtaining a certain end-closed shape.

(Example) Hereinafter, the present invention will be explained with reference to the drawings.

Fig. 1 shows an overall front view of the present invention after completion of end closure processing, the right side of the figure is a front view of a partial cross section, Fig. 2 is a side view of Fig. 1, and the right side of the figure is a closed view. At the end of machining, the left side shows the start of closing machining.

The present invention, as also shown in FIG.
A lower holder 21 is integrally fixed to 2, and a guide post 4 is provided upright. The upper die 3 has a rail 2 placed on it, is engaged with a drive system (not shown), moves back and forth, and is given a known press function so that it can be moved up and down. Furthermore, as shown in FIG. 1, a product guide 12 that fits into the peak of the deck plate 1 and a product guide 13 that fits into a low protrusion formed in the center of the valley are fixed to the lower holder 21. are doing.

Furthermore, as shown in FIG. 1, in the upper die 3, a spring 8-2 is provided on the guide pin 7-2, and a pedestal 10 is installed horizontally with a buffer material 9 interposed therebetween. It integrally has a valley plate presser 11 that fits into the valley of the deck plate 1, and cooperates with the lower die 22 to facilitate the end closing action of the deck plate 1.

A pair of opposing lower blades 23 is fixed to the lower holder 21, and the pair of lower blades 23 and the upper holder 14
The deck plate 1 is cut to a regular length by a plate-shaped upper blade 20 that can be fitted between the pair of lower blades 23 and fixed to the lower blade 23.

The upper holder 14 of the present invention includes the upper blade 20 and a punch 15 for crushing the crest of the deck plate adjacent to the side surface of the upper blade 20 in the thickness direction (see FIGS. 4b and 5b). are fixed together. In the illustrated example, the punch 15 is fixed to the upper holder 14 via punch holders 24 and 26 and a mounting base 25. Moreover, the upper blade 20 is
As shown in FIG. 4a, the deck plate has triangular protruding blades at the troughs, and a flat blade located slightly below the lower end surface of the punch 15 at the crests. Therefore, except for the final stage of crushing the peaks, the flat blade portion of the upper blade 20 mainly crushes the peaks. Note that the opposed side surfaces of the punch 15 in the deck plate width direction and the side surfaces of the valley plate holder 11 are both perpendicular and close to each other.

The valley plate holder 11 is arranged so that the end surface on the upper blade 20 side (the right end surface in FIG. 2) almost coincides with the side surface of the upper blade 20 in the thickness direction (that is, coincides with the end surface position of the deck plate after cutting). This valley plate holder 11 is provided with claws 16 for pre-deforming the flange portion of the deck plate for inward bending. This nail 16 is
It has a horizontal tip facing the flange part of the deck plate, is provided so that it can move within a certain range in the width direction of the deck plate (left and right in FIG. 1) and in the up and down direction, and urges this pawl 16 upward. A spring 8-3 that biases the flange portion and a spring 8-4 that biases the flange portion side are provided. Furthermore, the claw 16
A guide pin 7-4 that abuts on the upper surface is provided on the frame 10 so as to be movable up and down, and a guide pin 7-1 that abuts on the upper end of the guide pin 7-4 is attached to the upper holder 1.
4 so as to be movable up and down, and this guide pin 7-
1 is equipped with a spring 8-1 for pushing down the guide pin 7-4 by overcoming the reaction force of the spring 8-3 when the upper holder 14 is lowered relative to the frame 10. Also, nail 1
A tapered surface is formed on the upper surface side of the tip of the punch 15, and when the punch 15 is lowered, the side edge of the lower end surface of the punch 15 comes into contact with this tapered surface, and the claw 16 is horizontally moved from the flange part by a horizontal component force. It is configured to be moved back and housed in the valley plate holder 11.

The spring 8-3, the guide pin 7-4, the spring 8-1, the guide pin 7-1, etc. constitute a pawl vertical movement control means, and the spring 8-4, the pawl 1
The tapered surface of the tip of the punch 15 and the lateral edge of the lower end surface of the punch 15 contact the tapered surface when descending to cause the claw 16 to retreat horizontally, forming a claw horizontal motion control means.

The structure of the present invention is as described above, and next, the closing process of the end of the deck plate will be explained.

Upper holder 14, pedestal 10 and valley plate presser 1
The entire upper die 3 including the first die descends at the same time as the press ram descends, and first, the valley plate presser 1 is placed on the pedestal 10.
1 presses the valley of the deck plate to the end surface position of the deck plate, and the upper blade 20 and punch 1
5 descend together, and the upper blade 20 and punch 15 crush the peak (actually, at the beginning of crushing the peak, the upper blade 20 hits the peak slightly earlier than the punch 15, and the peak is crushed). (the punch 15 barely touches the peak), and the upper blade 20 touches the lower blade 2.
Immediately after reaching 3 and cutting the deck plate 1, the punch 15 completely crushes the peak at the end, completing the closing process. During this closing process, the lower surface of the angled punch holder 24 (or 26) adjusts the shape of the inclined part between the part where no deformation of the peak occurs and the crushed part (Fig. 2, Fig. 6 b) etc.).

To explain the above crushing process in more detail, just before the upper blade 20 and punch 15 start crushing the peak (strictly speaking, just before the upper blade 20 contacts the peak), the fourth As shown in figure a,
The horizontal tip of the claw 16 comes into contact with point a on the flange of the deck plate 1, and then the upper holder 14
When the trough plate presser 11 descends, the claw 16
is the spring 8- acting on the guide pin 7-1.
The deck plate 1 is pushed down via the guide pin 7-4 with a downward force of 1 and descends to point b, thereby imparting a pre-deformation L of inward bending to the flange portion of the deck plate 1. The horizontal reaction force that the pawl 16 receives during this pre-deformation is received by the spring 8-4. After the tip of the claw 16 descends to point b, the upper blade 20 and punch 15 start crushing the mountain portion of the deck plate 1.

An S-shape is formed by the pre-deformation of the flange portion by the tip of the claw 16, and when the upper blade 20 and punch 15 continue to descend, the lateral edge of the lower end surface of the punch 15 forms the tapered surface of the tip of the claw 16. A horizontal component force is applied to push the claw 16 to the right in FIG.
The end closing process in step 5 is completed.

In this way, in the present invention, from the start to the end of the end closing process, the valley plate holder 11 presses the valley of the deck plate to the end surface position of the deck plate, so that the upper blade 20, punch 15 and the valley plate holder The crushing process is performed jointly with 11, thereby preventing warpage from occurring at the end of the deck plate. In this case, the upper blade 20 originally only has a cutting action, but because it is provided integrally with the punch 15, the upper blade 20 also takes part in the crushing action.

Deformation over time during the closing process of deck plate 1 is shown in the sixth figure.
As shown in the figure. As shown in the figure, by pre-deforming inward bending near the lower end of the flange portion, buckling begins at this pre-deformation location during the crushing process. Therefore, the buckling pattern (the manner in which the flange portion is crushed) is constant. Therefore,
Even without forming the ribs 34 as in the conventional method, end closure processing that does not cause cracks and has excellent shape properties can be achieved.

(Effects of the Invention) According to the present invention, when closing the end of the deck plate, the horizontal tip of the claw that is movable in the width direction and the vertical direction of the deck plate is attached to the flange portion of the deck plate to prevent inward bending. After performing the transformation,
Since the peaks are crushed down to the valley surfaces with a punch, a stable end-closed shape is obtained because the buckling points are constant, and the deck plate is not cracked by the closing process. Furthermore, since the valley plate presser presses the valley to the end face position of the deck plate from the start to the end of the crushing process, warpage is prevented from occurring at the end of the deck plate.
Furthermore, since the cutting of the deck plate to a fixed length and the closing process are performed at the same time, it is possible to incorporate it into the deck plate production/processing line and operate it in-line, thereby improving its productivity.

[Brief explanation of the drawing]

Fig. 1 is a front view of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is an exploded explanatory view of main parts of the invention, Fig. 4
Figures a and b are explanatory diagrams of the action at the start of processing of the present invention,
Figures 5a and b are explanatory diagrams of the action of the present invention upon completion of machining, Figure 6 is a line diagram of a modification of the present invention, Figure 7 is a perspective view of the conventional example, and Figure 8 is a front view of the conventional example. It is a diagram. 1...Deck plate, 2...Rail, 3...
Upper die, 4... Guide post, 7-1... Guide pin, 7-2... Guide pin for plate holding, 7-4
...Guide pin, 8-1 ...Spring, 8-3
...Spring, 8-4...Spring, 9...
Cushioning material, 10... Frame, 11... Valley board presser, 1
2...Product guide, 13...Product guide, 14...
...Upper holder, 15...Punch, 16...Claw, 2
0...Upper blade, 21...Lower blade holder, 22...Lower die, 23...Lower blade, 24, 26...Punch holder, 25...Mounting base.

Claims (1)

[Scope of Claims] 1. A device for closing the end of a deck plate, which crushes the peaks at the longitudinal end of the deck plate to close the end, which comprises a lower blade fixed to a fixed lower blade holder 21; Blade 23
an upper blade 20 fixed to an upper blade holder 14 provided integrally with an upper die 3 that is movable up and down; Suspended frame 10
and a trough plate holder 11 of the deck plate fixed to the mount 10, fixed to the upper blade holder 14 adjacent to the side surface of the upper blade 20 in the thickness direction, and whose lower end surface is the lower end surface of the upper blade 20. A punch 15 for crushing the crest of the deck plate located slightly above the deck plate, and a horizontal punch 15 facing the flange of the deck plate, which is attached to the valley plate holder 11 so as to be movable in the width direction and vertical direction of the deck plate. The tip of the claw 16 is applied to a predetermined location on the flange of the deck plate just before the upper blade 20, which descends together with the punch 15, comes into contact with the peak of the deck plate. a pawl vertical movement control means for lowering the pawl 16 by a slight distance to pre-deform the flange portion by inward bending; and a pawl horizontal movement control means for moving the pawl 16 horizontally away from the flange portion after the pre-deformation. A device for closing the end of a deck plate, comprising a control means. 2. The claw vertical movement control means includes an elastic body 8-3 that urges the claw 16 upward, a vertically movable guide pin 7-4 that contacts the upper surface of the claw 16, and an upper holder 1.
an elastic body 8-1 that applies a reaction force to the guide pin 7-4 to overcome the reaction force of the elastic body 8-3 and lower the pawl 16 when the guide pin 4 is lowered relative to the frame 10. The deck plate end closing processing device according to claim 1, characterized in that: 3. The claw horizontal movement control means includes an elastic body 8-4 that urges the claw 16 in the horizontal direction toward the flange, and a tapered surface is formed on the upper surface side of the tip of the claw 16 so that the punch 15 is lowered. 2. The edge closing process of a deck plate according to claim 1, wherein the lateral edge of the lower end surface of the punch 15 comes into contact with the tapered surface and causes the claw 16 to recede horizontally from the flange portion. Device.