JPS62248516A - End part closing device for deck plate - Google Patents

Abstract

PURPOSE:To prevent the crack of a deck plate and to enable the operation in an in-line by providing the root part plate presser of a deck plate and giving a pre-deformation to the flange part of the plate with the L type claw which is provided inside the presser and slidable in the upper and lower, before and behind directions. CONSTITUTION:The crest part and root part of a deck plate 1 are engaged with product guide 12 and 13 and the end part of the plate 1 is held with the co-operation of the plate presser 11 which is engaged with the root part and the lower part die 22. The whole upper die 3 is then descended, the projection of a claw 16 comes into contact with the flange part (a) of the plate 1 and is descended upto a point (b) to give a predeformation L to the flange part. The crest part of the plate 1 is crushed thereafter by a punch 15. The predeformation L of the flange part is therefored formed in S shape, the claw 16 is moved to the plate presser 11 by receiving the skew by the punch 15 in succession and the predeforming function is cancelled. Since the crushing is performed with the cooperation of the punch and plate presser the camber on the end part of the back plate is not caused.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for closing the end of a deck plate.

(Prior Art) Deck plates are often used as architectural flooring materials or bridge road bottom materials. For example, Japanese Patent Laid-Open No. 58-58349 discloses a method for closing the ends of deck plates during running. ing.

That is, in the conventional deck plate, for example, as shown in FIG.
is formed. Here, h is the edge processing length, h is the deck plate height, b is the lip height, and a is the rib width.

By the way, Detsuki Play) 50-1 is shown in Figure 8.

As shown, a deck slab is formed by the overlapping fitting portion 11 of the lip 34 in the width direction of the deck plate, but according to experience, concrete leakage occurred during construction at the width a of the lip 34, and it was difficult to improve the problem. desired.

Furthermore, the process of closing the end of the deck plate is usually performed off-line, resulting in poor productivity and requiring in-line mass production.

The present applicant previously proposed in Japanese Patent Application No. 60-247166 and Japanese Patent Application No. 60-247167 a method and an apparatus for solving all of the above-mentioned problems.

By the way, in closing the end of the deck plate, after holding down the valley plate, the claw-like protrusions give the flange a predeformed shape to create an S-shaped shape on the end surface of the deck plate, which makes the crushing process extremely smooth. However, as a result of experiments, warpage was sometimes formed at the end of the deck plate with a length equivalent to the claw-like protrusion, and a solution to this problem was sought.

(Problem to be solved by the invention) When closing the end of the deck plate, an S-shape is formed during the closing process without forming a lip at the end, and the S-shape is finally crushed and deformed. This can prevent concrete from leaking at the joints in the width direction of the deck plate, but requires an end closure processing device that prevents the deck plate from cracking and has excellent shapeability.

The present invention provides a deck plate end closing device that can form an end portion that reliably prevents concrete leakage during construction with high productivity.

(Means for solving problems) The present invention will be explained below with reference to the drawings.

Figure 1 shows an overall front view of the present invention at the start of end closure processing, the right side of the figure is a partial cross-sectional front view, and Figure 2 shows the
In the side view of the figure, the right side of the figure shows when the closing process is completed, and the left side shows when the closing process starts.

In the present invention, as shown in the first factor, the lower die 22 is provided with the lower holder 21, and the guide post 4 is erected.

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. The lower holder 21 also has a product guide 12 that fits into the peak of the deck plate 1 as shown in FIG.
A product guide 13 that fits into the valley is disposed.

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

A lower blade 23 is provided on the lower holder 21, and the deck plate 1 is cut into a regular length by the upper blade 20 provided on the upper holder 14.

In the present invention, the upper holder 14 is provided with an upper blade 20° punch 15 and the punch holder 2 of the deck plate.
6 is installed on the upper holder 14 via a mounting base 25.

The end face of the plate holder 11 in the present invention is designed to match the end face of the deck plate, and an L-shaped pawl 16 is provided inside the end. The L-shaped pawl 16 has a spring 8-4, 8-3, as shown in FIG.

It is slidable in the vertical direction and the front-back direction, and the pressing force of the upper holder 14 is applied to the L-shaped claw 1 through the guide pin l-4'.
Give to 6.

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.

The entire upper die 3 descends at the same time as the press ram descends, and the fourth
As shown in the figure, the protrusion of the claw 16 comes into contact with a point a on the flange portion of the deck plate 1 and descends to the point a, thereby imparting a predeformation Li to the flange portion of the deck plate 1.

The reaction force during pre-deformation of the deck plate 1 is stopped by the spring 8-4. After the protrusions of the claws 16 have descended completely, the punch 15 begins crushing the peaks of the deck plate 1.

An S-shape is formed by the pre-deformation of the flange portion, and as it is subsequently pressed by the punch 15, the pawl 16 moves into the plate holder 11 as shown in FIG. The end closing process is completed.

Therefore, in the present invention, since the plate holder in the valley extends to the end surface of the deck plate from the start to the end of the end closing process, the punch and plate holder work together to crush the edge of the deck plate. There is no possibility of warping of the parts.

FIG. 6 shows the deformation of the deck plate 1 over time during the closing process. At the stage where the end portion of the deck plate 1 has been closed, the deck plate 1 is cut to a fixed length using the upper blade 20 and the lower blade 23.

(Effects of the Invention) In the present invention, the end of the deck plate is closed by pre-deforming the flange of the deck plate by inward bending using a claw-like protrusion, and then being pressed from above to the bottom of the valley surface with a pressing die. Since a closed shape can be obtained and the deck plate does not crack due to the closing process, it can be incorporated into a deck plate production/processing line and operated in-line, improving productivity.

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention, FIG. 2 is a side view of FIG.
is an explanatory diagram of the action at the start of processing of the present invention, Fig. 5 taJ
(b) is an explanatory diagram of the action of the present invention upon completion of machining, FIG. 6 is a linear cause of deformation of the present invention, FIG. 7 is a perspective view of the conventional example, and FIG. 8 is a front explanatory diagram of the conventional example. . 1: Deck plate 2: Rail 3: Upper die
4 Guide post 5: Cam guide 6
: Cam 7-1 guide pin 7-2: Plate holder guide 8 spring Pin 9: Urethane 10: Frame 11: Plate holder 12: Product guide A13: Product guide B 14: Upper holder 15: Punch
16: Claw 20: Upper blade 21: Lower holder - 22 = Lower die 23: Lower blade 25: Mounting base 26: Ponte holder agent
Patent Attorney Tatsuo Chanoki Figure 4 ((1') (b) Figure 5 (a (b) Figure 6 - "Continuation of the Book (spontaneous)" May 27, 1985

Claims (1)

[Claims] In an end closing device in which a lower holder having a lower blade is provided on the base and an upper blade is provided in the upper holder, a punch 15 is provided on the upper holder 14 along with an upper blade 20, and a pedestal 10 is suspended from the upper die 3. , a trough plate holder 11 of the deck plate is provided on the pedestal 10, the plate holder 11 is aligned with the end surface of the deck plate, an L-shaped claw 16 is internally provided at the end of the plate holder 11, and the L-shaped The pawl 16 is made slidable in the vertical and longitudinal directions through an elastic body, and the L-shaped pawl 16 pre-deforms the flange portion of the deck plate by compression processing of the punch 15, and then This device for closing the end of a deck plate is configured to complete the closing process of the deck plate by retreating under the pressure of a punch 15.