SU948670A1 - Apparatus for closing and opening mould side boards - Google Patents

Description

 (54) DEVICE FOR OPENING AND CLOSING OF FORMS OF FORMS

The invention relates to devices for opening and closing the sides of the molds and can be used in the manufacture of precast concrete, for example, on: conveyor lines.

A device for opening and closing the sides of the mold is known, which comprises a pivoting lever mechanism mounted on the base with a gripper and its drive.

A disadvantage of this device is the complexity of the design and the fact that the grip, interacting with the rye-bracket bead of the form, creates a large force transmitted to the hinges of the sides, which increases the metal intensity of the forms 1. ,

The closest known device is a device comprising levers pivoting in a vertical plane with grippers and hydraulic cylinders for their rotation, and the grippers of the levers interact with the profile protrusions of the beads 2.

This device creates less force transmitted to the hinges of the sides of the form. ,

The disadvantages of it are also the complexity of the design and the impossibility of using it both at the assembly station and at the formwork dismantling station on conveyor lines for the production of precast concrete, which reduces the productivity of conveyor lines.

The purpose of the invention is to simplify the design and increase the productivity of conveyor lines.

This goal is achieved by the fact that in ycTpotiCTBe for opening and

10 closing the sides of the molds containing levers pivoting in a vertical plane by means of a drive made in the form of a hydraulic cylinder with an eye on the rod, the levers are pivotally attached to the hydraulic cylinder, provided at free ends with lugs connected to the board and the pallet of the form, and the hydraulic cylinder rod zan with pallet. In addition, each

20, a lever connected to the form board is provided with a torsion spring.

Fig. 1 shows a device for opening and closing the sides of the molds, side view; figure 2 - view of

25 arrow A in FIG. FIG. 3 shows a device for opening and closing the sides of the molds in stationary versions.

Claims (2)

The device for opening and closing the sides of the molds comprises a hydraulic cylinder 1 with a hole on the rod 2 and levers 3 and 4 pivotally in the vertical plane. The levers are hinged on the body of the hydraulic unit, and their free ends also have lugs on the pallet 5 and the sides of the mounting bracket lugs 7 and. 8, respectively, for fastening the levers 4 and 3, as well as the lug 9 for fastening the rod 2. The corresponding lugs are interconnected by clamps 10. In the stationary version, the device is equipped with a lifting hydraulic cylinder 11 and two telescopic struts 12, and the levers 3 and 4 are hinged at the ends of the rods 13, rigidly connected to the hydraulic cylinder 1. The rod 2 and the lever 3 are connected to the bridge 14, which is supported by its platform 15 with the hydraulic cylinder 11 and telescopic pillars 12. The pallet 5 in this embodiment is designed with The guides 16 and the beads 6 are with profile lugs 17 A torsion spring 18 is installed on one of the hinges of each lever 4. The springs hold the levers 4 in the raised position, which is necessary to bring them into the profile lugs 17 of the sides of the forms. The hydraulic cylinder 11 and the telescopic pillars 12 are mounted on the base 19 of the demolding station or assembly. The device operates as follows. In the portable version of the device (Fig. 1.2), the levers 3 and 4, as well as the rod 2 of the hydraulic cylinder 1, are secured with their lugs and corresponding lugs 8.7 and 9 of the pallet 5 and the sides b of the form with clamps 10 The side opening is performed by supplying the working fluid to the piston part of the hydraulic cylinder 1, and closing it by feeding it to the rod part of the hydraulic cylinder. In the stationary version, the device is installed on the base 19 of a demolding station or assembly. They include lift cylinder 11, the rod of which, as well as the telescopic pillars 12, slide in and act through the supporting platform 15 on the bridge 14, lift it. When lifting, the jumper 14 enters the grooves of the guides 16, and the eye of the spring-loaded lever 4 with the latch 8 enters the profile protrusion .17. board The opening and closing of the bead are carried out in a manner similar to the portable version. If necessary, the jumper 14 can be disconnected from the hydraulic cylinder 11 and the telescopic struts 12 and fixed motionless on the pallet 5 in the guides 16, and the device can be used as a portable. The use of the device due to the fact that it can be made portable and can be used both for assembly and for demolding will improve the performance of conveyor lines, and since the force from the levers and rod of the hydraulic cylinder prc demolition or form assembly is applied directly to the board rather than to the levers of hinges, as in known devices, this increases the length of the arms opening force, which makes it possible to reduce the size of the hydraulic cylinder and generally simplify the device. Claim 1. A device for opening and closing the sides of the molds, comprising levers pivoting in a vertical plane by means of an actuator made in the form of a hydraulic cylinder with an eye on the rod, characterized in that, in order to simplify the design and increase the productivity of conveyor lines, the levers are hinged on the hydraulic cylinders are provided at the free ends with eyelets connected to the board and the form tray, with the hydraulic cylinder rod being connected to the pallet. 2. A device according to claim 1, characterized in that each lever connected to the form board is provided with a torsion spring. Sources of information taken into account in the examination 1. USSR author's certificate 703330, cl. B 28 B 7/02, 1977.. 2. USSR author's certificate No. 636087, cl. B 28 B 7/10, 1976.