JPS60885B2 - How to demold concrete pipes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention seeks to propose a method for automatically performing demolding of concrete pipes and disassembly of formwork, which were conventionally performed manually.

Embodiments of the present invention will be described below with reference to the drawings.

First, a formwork is constructed as shown in FIGS. 1, 2, and 3. In other words, the L formwork A is made up of a main body 1, flanges 2, 2a fixed at both ends, end molds 3, 3a that are iron-fitted to the flange, and a number that is rotatably supported through the flanges. It consists of a shaft punch 4, a locking piece 5 fixed to the outer end of the shaft punch 4, and a spring 6 that biases the locking piece 5 inward. , 2a are fixed using bolts 7, and the number of engaging/disengaging pieces 5 is three each.

Then, as shown in FIG. 4, the filled and dry formwork A of the concrete pipe B that has come out of the concrete filling device is sent onto the rollers 10 of the end mold disassembly station 9 by the main conveyor 8, and the frame A of the rollers 10 as shown in FIG. 11, then also raise the positioning pin 12, rotate the roller 10, and then raise the positioning pin 12.
21) to position the formwork. Next, as shown in FIG.
The three hydraulic cylinders 15 attached to the clamp CI are extended to switch the engagement piece from the engagement position 5 to the disengagement position 5a as shown in FIG. The CI vibrates with the vibrating body 17 to make it easier to disassemble the end mold 3, and then moves it back to disassemble the end mold 3.
On the side of the rice bran (upper side shown), there is a No. 3 machine of almost the same construction as in Figure 7.
It is clamped with clamp C3 and lowered onto the sub-conveyor 8a. Of course, before that, the first clamp CI is further retreated. Note that the end mold 3a on the small diameter side is also disassembled in the same manner using a device not shown, but this is easy to disassemble. However, the end type 3 on the Oyo side
Since it is difficult to disassemble, the movable stopper 18 in Fig.
is engaged with the maxim 2a to prevent the main body 1 from being pulled by the end mold 3. Next, the rollers 10 are lowered, and the main conveyor 8 sends the main body 1 to the demolding station 19. Then, the small diameter side collar 2a is fixed with the second clamp C2 by moving the cylinder 20 in FIG. is extended to extrude the extrusion plate 23, and the concrete pipe B is demolded. After that, after returning each device to its original position, the main body mold 1 and the end molds 3, 3a are cleaned by brushing and blowing air as appropriate while being sent on the conveyor 8a, and reassembly is performed in the reverse order to the above. conduct.
Further, the concrete pipe B is sent to a desired location by a seal 24.
As is clear from the above description, according to the present invention, there is an effect that demolding of concrete pipes and disassembly of formwork can be automated using simple and inexpensive equipment.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of the formwork, Fig. 2 is a side view of the rhombus section with the same portion cut away, Fig. 3 is a front view of the same, and Fig. 4 is an exploded view of the mold. FIG. 5 is a longitudinal sectional view of the end mold scale device, FIG. 6 is a front view thereof, and FIG. 7 is a plan view of the mold removal device. A: Formwork "B: Concrete pipe, CI, C2: Clamp" 1: Main body type, 2, 2a: maxim, 3, 3a: end type, 4
: Fujimura, 5: Detachable piece, 6: Spring, 7: Bolt, 8: Main conveyor, 8a: Sub-conveyor, 9: End type disassembly station, 10: Loaf, 11: Frame 12: Positioning pin, 1
3: Gear, 14: Screw, 15, 20, 22: Hydraulic cylinder, 16: Telescopic punch, 17: Sliding body, 18, 21; Stopper, 19: Demolding station, 23: Extrusion board, 24
:rail. Figure 2 Figure 3 Figure Ship Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1 The formwork is made up of a main body, a collar fixed at both ends of the body, an end mold removably fitted to the collar, several shaft rods rotatably supported through the collar, and the shaft. A detachable piece fixed to the outer end of the rod,
and a spring that urges the engaging/disengaging piece inwardly, and the formwork in the filled and dry state of the concrete pipe is sent to the mold disassembly station by the main conveyor, where the end mold is fixed with the first clamp,
Switch the engagement piece from the engagement position to the disengagement position using the telescoping lever, move the clamp back, disassemble the end mold, place it on the sub-conveyor, and then move the main body to the demolding station on the main conveyor. A demolding method in which the small diameter side collar is fixed with a second clamp, and the extrusion plate is extruded to demold the concrete pipe.