CN201030610Y

CN201030610Y - Vacuum dense concrete precast member forming die

Info

Publication number: CN201030610Y
Application number: CNU2007200787864U
Authority: CN
Inventors: 韩明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-16
Filing date: 2007-03-16
Publication date: 2008-03-05
Anticipated expiration: 2017-03-16

Abstract

The utility model relates to a forming die for vacuum air-free concrete precast product which can expedite hardening of the concrete precast product. A die cavity comprises an upper supporting die, a forming soft die, and a lower female die fixed by screws. One end of the die cavity is open, and the other end is closed, wherein the center position of the closed end is provided with a steel fixing hole. The upper supporting die is provided with a breather hole and the bottom of the lower female die is provided with a filtration port. The lower female die and the vacuum die cavity fixed by a screw combine into a vacuum cavity, one end of which is closed, and the other end is provided with a vacuum suction nozzle which is connected with a vacuum aspirator pump. The vacuum aspirator pump makes the die cavity vacuum, and brings the negative pressure to the precast product die cavity. The redundant water in the precast product is aspirated through the filtration port, therefore the precast product can be quickly dewatered and hardened.

Description

Vacuum-densified precast concrete mould

Affiliated technical field

The utility model relates to a kind of build concrete prefabricated component mould, particularly a kind of mould that can effectively make precast concrete fast dewatering hardened forming.

Background technology

At present in building industry; produce a large amount of precast concretes through regular meeting according to requirement of engineering; and method commonly used is that concrete is injected behind the mould after putting well; make concrete compaction through vibration; allow its natural air drying moulding then; treat its sclerosis back mold removal; and then produce precast concrete with this mould; and since time of being spent of natural air drying moulding long; moulds a large amount of in the time of will causing producing precast concrete like this is occupied, and the mould life cycle is elongated, and production efficiency is extremely low; also make simultaneously and when producing the precast concrete of same model, need prepare a large amount of moulds, the production cost height.

Summary of the invention

In use exist ground not enough in order to solve existing concrete prefabricated component mould, the utility model provides a kind of vacuum-densified precast concrete mould, this mould not only can make precast concrete be shaped, and can significantly shorten the time that precast concrete is shaped, enhance productivity, reduce production costs.

The technical scheme that its technical problem that solves the utility model adopts is: go up a cloudy hold mode, moulding soft mode, following former through the fixing prefabricated component mould shape chamber of forming of screw, prefabricated component mould shape chamber one end opening, other end sealing, bottom at following former is provided with filter opening, be plugged with fiber plug in the filter opening, add the vacuum chamber mould below following former, an end of vacuum chamber mould is sealing, the other end has vacuum slot, external vacuum suction pump.When concrete through mould shape chamber openend inject fill up after, handle mould shape chamber inner opening end concrete smooth and openend is sealed with baffle plate, the rule so that the precast concrete port is shaped, start the vacuum suction pump with air sucking-off in the vacuum chamber, form negative pressure in the vacuum chamber, and the interior air pressure of model cavity this moment is standard atmospheric pressure, air pressure in the model cavity will be obviously greater than the air pressure in the vacuum chamber, under the atmospheric pressure effect, to make the gas in the mould shape chamber flow into vacuum chamber through filter opening, and finally by the sucking-off of vacuum suction pump, fiber plug in the filter opening can stop that promptly concrete can make the gas in the model cavity freely pass through again toward interior the flowing of vacuum chamber, flow in the process of vacuum chamber through filter opening at gas, the moulding soft mode props up the hold mode surface with last the moon to be separated, the moulding soft mode is close to the precast concrete surface, excessive moisture in the precast concrete also will be brought into vacuum chamber by air-flow simultaneously, and can be by the sucking-off of vacuum suction pump, so just make the sclerosis of precast concrete fast dewatering easily, after the precast concrete sclerosis, get final product mold removal, so that produce next precast concrete.

Originally sell with novel beneficial effect and be: can when precast concrete is shaped, shorten the curring time of precast concrete, reduce the occupancy of mould, enhance productivity, reduced the unit cost of production, simple in structure, easy to operate, be beneficial to and promote the use of.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the perspective view of this utility model mould;

Fig. 2 is the cross section structural representation of this utility model mould;

Fig. 3 is the vertical section structural representation of this utility model mould;

Fig. 4 is the vertical section structural representation of second kind of embodiment of this utility model mould.

Code description among the figure: 1 baffle plate; 2 dog-houses; 3 vacuum chamber moulds; 4 support columns; 5 filter openings; 6 fiber plug; 7 model cavities; A cloudy hold mode on 8; 9 times formers; 10 reinforcing bar fixing holes; 11 vacuum slots; 12 vacuum chambers; 13 fixed screws; 14 fixed screws; 15 moulding soft modes; 16 passages.

The specific embodiment

At Fig. 1, Fig. 2, among Fig. 3, a last cloudy hold mode (8), moulding soft mode (15) and following former (9) be composition model chamber (7) after fixed screw (13) is fixing, in the filter opening (5) of following former (9), fill in fiber plug (6), vacuum chamber mould (3) and following former (9) are formed vacuum chamber (12) after fixed screw (14) is fixing, support (4) above the vacuum chamber mould (3) are that disposable integral is shaped with the vacuum chamber mould, in order to increase the intensity of precast concrete, when producing, in reinforcing bar fixing hole (10), put into reinforcing bar in advance, and then by dog-house (2) fill concrete, fill up material back handle the concrete of dog-house end smooth with baffle plate (1) and with it with port closed, start vacuum slot (11) and locate external vacuum suction pump, the interior gas of vacuum chamber (12) will be by rapid sucking-off, vacuum chamber promptly produces low pressure in (12), and the air pressure in model cavity this moment (7) is standard atmospheric pressure, utilize the effect of atmospheric pressure, gas in the model cavity (7) will enter in the vacuum chamber (12) by the filter opening (5) of following former (9) bottom, the air pressure of model cavity (7) reduces, the outer air pressure of model cavity this moment is higher than the air pressure in the model cavity again, the outer gas of model cavity will force moulding soft mode (15) to be close to the precast concrete outer surface by the pore (16) that passes through that last the moon props up in the hold mode (8), so just make that the precast concrete shaping surface is smooth, air-flow is then taken moisture content unnecessary in the precast concrete out of in motion process, thereby precast concrete can be hardened by fast dewatering, get final product the demoulding after the sclerosis, general hardening process only takes 1～2 minute, shorten the demould time of precast concrete, improved the utilization rate of mould.

Fig. 4 provides the another embodiment of the utility model mould, is used to produce plate shaped precast concrete.

Claims

1. a vacuum-densified precast concrete mould is propped up hold mode, is descended former, baffle plate, vacuum suction pump, fixed screw to form by last the moon, and it is characterized in that: the internal layer at a last cloudy hold mode is provided with the moulding soft mode, in the bottom of following former the vacuum chamber mould is arranged.

2. vacuum-densified precast concrete mould according to claim 1 is characterized in that: going up in the cloudy hold mode has passage directly to contact with moulding soft mode outer surface, and moulding soft mode outer surface is close to a cloudy hold mode inner surface.

3. vacuum-densified precast concrete mould according to claim 1 is characterized in that: following former bottom is provided with filter opening.

4. vacuum-densified precast concrete mould according to claim 1 is characterized in that: in the vacuum chamber mould support column is arranged, support column contacts with following former outer surface.

5. vacuum-densified precast concrete mould according to claim 1 is characterized in that: the sealing of vacuum chamber mould one end, and the other end has vacuum slot, and vacuum slot is connected with the vacuum suction pump.