JP3021177B2 - Mechanism for preventing bending of mold frame side plate in set frame fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending preventing mechanism for preventing a bending of a molding frame side plate which occurs when a set frame with a fixture is fixed on a side plate of a molding frame by a setting frame fixing device. .

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 60-348 disclosed by the present applicant.
According to the set frame fixing device of No. 07, the fastening tool is brought closer to the side plate of the forming mold by rotating a bolt provided on the side surface of the set frame, and the fastening tool is engaged with the locking bar at the upper end of the side plate of the forming mold. Together, the set frame is fixed to the mold.

[0003]

However, in the set frame fixing device as described above, when the bolt is rotated so as to press the fastener against the side plate of the forming mold while fixing, the bolt is pressed. There is a concern that the side plate will bend inward due to the force. When the side plate bends in this way, the position of the reinforcing cage suspended from the set frame shifts, causing problems such that the reinforcing cage is exposed on the surface of the completed ALC plate and the required strength cannot be obtained.

[0004]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a means for preventing a side plate from being bent inward by a pressing force of a fastener in the above set frame fixing device. is there. In order to achieve such an object, a cam shaft that advances and retreats in the short side direction of the molding form is rotatably supported,
A holding claw is attached to the camshaft, and a groove cam for rotating the camshaft is formed on the periphery of the camshaft as the camshaft advances and retreats. The present invention has invented a mechanism for preventing bending of a molding frame side plate in a set frame fixing device having a configuration for pressing the outer side in the short side direction.

[0005]

When the camshaft is retracted, the camshaft is rotated by the groove cam formed on the peripheral edge of the camshaft, and the pressing claw is inverted. After pressing the side plate outward with the holding claw inverted in this way in the short side direction, turning the bolt with the set frame fixing device to fix the set frame, preventing the bending of the molding frame side plate caused when the set frame is fixed I do.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 5 is a perspective view of a mold 1 for manufacturing an ALC (Autoclaved Lightweight Concrete) plate. As shown in the figure, left and right side plates 3 are disposed on both sides of the upper surface of the bottom plate 2 in the short side direction (X direction) of the mold, and the movable end plate 4 and the fixed end plate 5 are disposed in the long side direction (Y direction). This is the configuration. The reinforcing cage 8 is suspended via the set rod 7 on the set frame 6 arranged so as to straddle the left and right side plates 3 in the above-described forming mold frame 1. Then, a mortar in the form of a raw material slurry for ALC is poured into the forming mold 1, the mortar is hardened, and the ALC block taken out from the forming mold 1 having reached a predetermined hardness is fixed to a predetermined ALC plate with a wire. Cut to size and autoclaved to obtain product.

FIG. 6 shows a fixing device for fixing the set frames 6 arranged on the side plate 3 of the molding die 1 as described above. The head 12 of the bolt 11 slidably passed through the bracket 10 provided on the set frame 6 is projected from the side surface 13 of the set frame 6, and the bolt 11 is pushed outward (to the right in the drawing) at the bolt tip 14. Spring 15 biased to
Is attached. A half nut 18 attached to the lower end of a rod 17 is screwed into the screw portion 16 of the bolt 11. The rod 17 is urged upward by a spring (not shown), and the half nut 18 is normally screwed into the screw portion 16 of the bolt 11 by the urging force. The bolt 11 is released and the bolt 11 is pushed outward (to the right in the drawing) by the force of the spring 15 of the bolt tip 14. Further, between the head portion 12 of the bolt 11 and the screw portion 16, there is a fastening tool 20 attached by a pin 19 so as to advance and retreat with the bolt 11. The fastening tool 20 has a concave notch 22 for engaging with a locking rod 21 disposed at the upper end of the side plate 3 of the molding frame 1. On the other hand, reference numeral 30 denotes a grip body of the aligning device for adjusting the position of the set frame 6 installed on the side plate 3 of the mold 1. The gripper body 30 is in the short side of the form (X direction)
The lower bolt driver 33 is rotated by the operation of a nut runner 32 attached to a plate 31 slidably provided on the back of the gripper main body 30.

In the fixing device as described above, the plate 31 is moved so as to approach the setting frame 6, the bolt turner 33 is fitted on the head 12 of the bolt 11, and the nut runner 32 is rotated to thereby tighten the fastener 20. The set frame 6 is fixed to the molding die 1 by holding the locking bar 21 provided on the upper surface of the side plate 3 of the molding die 1 with the concave notch 22 of the fastener 20 in this way. The present invention relates to a means for preventing the side plate 3 from being bent inward by the pressing force of the fastener 20 in the above set frame fixing device.

As shown in FIG. 1, a cam shaft 42 is supported by a bearing 41 on a bracket 40 extending from the holding portion main body 30 by a bearing 41 so as to be able to advance and retreat in the short side direction (X direction) of the forming mold 1 and to be rotatable. A holding claw 43 is attached to the tip of the cam shaft 42 (see FIG. 3). A piston rod 46 of a cylinder 45 is connected to a base end of the cam shaft 42 via a joint 44. As shown in FIG. 2, the distal end flange portion 47 of the piston rod 46 is rotatably held inside the joint 44. Further, a groove cam 4 is provided on the periphery of the cam shaft 42.
The cam follower 49 disposed inside the bearing 41 is engaged with the groove cam 48 (see FIG. 3).
According to the above configuration, when the piston rod 46 is extended, the presser claw 43 is directed sideways as shown by a dashed line in FIG. Due to the engagement between the follower 49 and the groove cam 48, the cam shaft 42 is first inverted to bring the holding claw 43 downward as shown by the solid line in FIG. 4, and thereafter, while maintaining this downward state, Camshaft 4
The pressing claw 43 withdraws along with 2 (moves rightward in FIG. 4). In addition, a projection 50 is provided on the upper end of the side plate 3 of the molding form 1 so as to engage with the pressing claw 43 that has been retreated in a state facing downward as described above.

When the position of the set frame 6 is adjusted by the aligning device and the reinforcing cage 8 suspended on the set frame 6 is aligned in the forming mold 1, the cylinder 45 is prevented from being bent in the bending prevention mechanism of the present invention. The piston rod 46 is shortened by the operation, and the cam shaft 42 is first reversed by the engagement of the cam follower 49 and the groove cam 48 so that the pressing claw 43 faces downward as shown by the solid line in FIG. . Then, the holding claw 43 is further retracted together with the cam shaft 42 (moving rightward in FIG. 4) while keeping the holding claw 43 facing downward, and the protrusion disposed on the upper end of the side plate 3 of the forming mold 1 is formed. 50
To engage the holding claw 43. Thereby, the cylinder 4
With a force F of 5, the side plate 3 is firmly pressed outward in the direction of the shorter side of the mold (the X-axis direction). Next, the plate 31 is moved so as to approach the set frame 6 and the bolt is turned 33.
Is fitted to the head 12 of the bolt 11 and the nut runner 32
Is rotated to advance the fastening tool 20, and the recessed portion 22 of the fastening tool 20 is pressed against the locking rod 21 on the upper surface of the side plate with a tightening torque P, thereby setting the set frame 6
Is fixed to the mold 1. Thus, by setting the force F of the cylinder 45 and the tightening torque P by the nut runner 32 and tightening the bolt 11, the set frame 6 is fixed to the forming frame 1 while the side plate 3 is pressed by the pressing claws 43 on the frame. Therefore, it is possible to prevent the side plate 3 from being bent when the set frame is fixed.

[0011]

According to the flexure prevention mechanism of the present invention, the set plate is fixed after the side plate is pressed outward with the presser pawls in the short side direction, so that the pressing force of the fastener generated when the set frame is fixed is generated. The bending of the molding frame side plate can be prevented, and there is no need to worry about displacement of the set frame. Therefore, the problem of poor production of the ALC plate due to the displacement of the reinforcing cage is solved.

[Brief description of the drawings]

FIG. 1 is a front view of a deflection preventing mechanism according to the present invention.

FIG. 2 is a partial sectional view of a camshaft.

FIG. 3 is a perspective view of a cam shaft viewed from a side opposite to FIG. 1;

FIG. 4 is an explanatory diagram of the operation of the holding claw.

FIG. 5 is a perspective view of a molding form.

FIG. 6 is a front view of the set frame fixing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold form 3 Side plate 42 Camshaft 43 Pressing claw 48 Groove cam

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-159437 (JP, A) JP-A-61-173311 (JP, U) JP-A-62-170205 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B28B 7/00 B28B 23/02 B28B 1/50

Claims (1)

(57) [Claims] 1. A cam shaft which advances and retreats in a short side direction of a molding frame is rotatably supported, and a pressing claw is attached to the cam shaft, and a cam shaft is attached to a peripheral edge of the cam shaft along with the advance and retreat. A deflection preventing mechanism for a molding frame side plate in a set frame fixing device in which a grooved cam to be rotated is formed, and a pressing claw is inverted by the retraction of a cam shaft to press the molding frame side plate outward in a short side direction.