A manufacturing method for a new type of prefabricated precast concrete stair mold

Abstract

The present invention discloses a manufacturing method for a new type of prefabricated assembled concrete staircase mold. The manufacturing method is as follows: The first step is to manufacture the staircase mold. The second step is mold assembly. The third step is staircase casting. The fourth step is curing. During curing, steam is regularly introduced for solidification and water replenishment to complete the curing. The fifth step is demolding. The manufacturing method for the new type of prefabricated assembled concrete staircase mold of the present invention provides a staircase casting mold and a curing mold. The stepped surface of the casting mold is composed of a movable mold and a fixed mold assembled with each other, thereby being able to improve the demolding efficiency and the staircase is not easily damaged during demolding.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing prefabricated components, and more particularly to a method for manufacturing a new type of prefabricated assembled concrete stair mold, belonging to the technical field of prefabricated component manufacturing. Background Art

[0002] Residential industrialization emphasizes manufacturing houses in a large-scale industrial production manner to improve production efficiency and overall quality, and has become the mainstream of the current international residential construction industry development. Prefabricated assembled concrete technology can shorten the construction period, reduce costs, ensure the quality of buildings, save energy and resources, and reduce the adverse impact of construction waste on the environment through factory prefabrication and on-site assembly. Developing a prefabricated assembled structural system is the only way for residential industrialization; the design and construction method of building molds are the basis of residential industrialization components and parts, and are of crucial significance to the entire residential industrialization; currently, domestic precast concrete stair molds have been developed and applied; for example, Chinese Patent Application No.: 201610983399.9 discloses a prefabricated assembled concrete stair mold and a stair manufacturing method. The mold includes a back plate mold and a tread surface mold that are detachably connected; a cavity for pouring precast concrete stairs is formed by combining the molds, and a side opening is provided for pouring concrete; the mold also includes a support base, and the mold is rotatably connected to the support base. The mold has a horizontal state on the support base and a vertical state with the opening facing upwards after being flipped around the rotation connection part; the manufacturing method steps include: hoisting a steel bar cage, assembling the tread surface mold, flipping the mold into a vertical state, pouring concrete, flipping the mold into a horizontal state, removing the tread surface mold, etc.; the mold and its construction method of the present invention not only meet the requirement that the precast concrete stairs do not need to be flipped when the horizontal stair mold is demolded, avoiding damage caused by the flipping of the product, but also meet the requirement of the minimum finishing surface of the vertical stairs, with good formed appearance and ensuring product quality; however, the existing stair precast molds generally have problems such as difficult demolding of the step surface and easy damage to the steps during demolding. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a method for manufacturing a new type of prefabricated assembled concrete stair mold, which is composed of a movable mold and a fixed mold assembled with each other for the mold of the step surface, and can improve the demolding efficiency and is not easy to damage the stairs during demolding.

[0004] The method for manufacturing the new type of prefabricated assembled concrete stair mold of the present invention is as follows:

[0005] The first step is to manufacture a staircase mold, the staircase mold comprising a front template, a back template and a cross-board; the front template comprises a plate body; a plurality of groups of long through grooves are arranged on the plate body at intervals; a fixed step mold base with a step is integrally formed between two long through grooves on the inner surface of the plate body; a step groove is formed on one side of the fixed step mold base; a movable step mold base with a plurality of steps is movably embedded in the inner side of the step groove; the fixed step mold base and the movable step mold base are fitted together to form a step body; a square column is arranged on the back of the movable step mold base; the square column is embedded from the long through groove; a slot is provided opposite to the square column of each group of the long through grooves; a shoulder pole is movably inserted into the slot; The shoulder pole is provided with a plurality of threaded through holes; screws which are pressed into the outer surface of the plate body are screwed into the threaded through holes; the back template includes a first plate body and a second plate body which are perpendicular to each other; and an inclined plate which is integrally formed between the first plate body and the second plate body; the inner sides of the first plate body and the inclined plate form a right angle; the cross plate includes an end plate; an open groove which engages with the end angle of the plate body is provided on the side of the end plate close to the plate body; a dovetail groove which engages with the first plate body is provided on the side of the end plate away from the opening groove; the plate body and the end plate are fixed by a first set of screws; the first plate body and the end plate are fixed by a second set of screws; the second plate body and the plate body are fixed by a third set of screws.

[0006] The second step is mold assembly. First, complete the front template assembly, insert the movable step mold base into the step groove, then insert the square column into the long slot, and insert the shoulder pole into the square column, and finally lock the movable step mold base through the screw; then, respectively connect the end plate with the front template and the back template, and finally assemble the front template, the back template and the cross plate into one by the first set of screws to the third set of screws;

[0007] The third step is the pouring of the stairs. When pouring, first place the lower pad in the curing mold, then use the lifting equipment to turn the mold sideways, and at the same time, lift the mold onto the pad so that the side of the mold faces upwards, feed the steel mesh into the mold through the opening at the top of the mold, feed the lifting ear embedded parts into the mold, and finally feed the concrete into the mold for pouring. During pouring, vibrate it with a vibrating rod;

[0008] The fourth step is curing. During curing, steam is introduced regularly to solidify and replenish water to complete the curing;

[0009] The fifth step is demoulding. When demoulding, first use the lifting equipment to lift the mold out of the curing bin and lay it flat. Then, remove the first to third sets of screws, then loosen the screws, gently tap the movable step mold base to make it displace laterally, tap the movable step mold base in turn until the movable step mold base is displaced, then put the pry bar into the pry hole, and pry the pry bar synchronously to complete the pre-detachment of the plate; lift the front template away through the lifting equipment. Since the fixed step mold base has only one step and no cascade is generated, it can be directly lifted away; then, remove the end plate. When removing the end plate, just tap the side push. Finally, demould the back template. Before demoulding the back template, first open the lifting hole, and use the hole opening equipment to open the groove at the lifting ear, and use the lifting equipment to lift the step away from the lifting template.

[0010] Furthermore, a pressing groove is provided on the outer surface of the plate body facing the screw rod; and the end of the screw rod is pressed into the pressing groove.

[0011] Furthermore, the front template, the back template and the side of the cross-plate are provided with lifting holes or lifting ears.

[0012] Furthermore, a pry hole is provided at the location where the second plate body is in close contact with the plate body; and a pry hole is provided at the location where the cross-plate is in close contact with the plate body.

[0013] Furthermore, the staircase mold also includes a curing mold, which includes a plurality of curing bins, inside of which a steam pipe is provided; a plurality of injection holes are provided on the steam pipe; and both ends of the steam pipe are connected to a steam system.

[0014] Compared with the prior art, the present invention provides a novel prefabricated assembled concrete staircase mold manufacturing method, provides a staircase casting mold and a maintenance mold, and the step surface of the casting mold is composed of a movable mold and a fixed mold assembled with each other, thereby improving the demoulding efficiency and preventing the stairs from being lost during demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the front structure of the front template of the present invention.

[0017] Figure 3 It is a schematic diagram of the shoulder pole structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the curing bin structure of the present invention. DETAILED DESCRIPTION

[0019] Embodiment 1:

[0020] like Figures 1 to 4As shown, the novel prefabricated assembled concrete staircase mold manufacturing method of the present invention is as follows:

[0021] The first step is to manufacture a staircase mold, which includes a front template, a back template and a cross-board; the front template includes a plate body 1; a plurality of groups of long through grooves 2 are arranged at intervals on the plate body 1; a fixed step mold base 3 with a step is integrally formed between two long through grooves 2 on the inner side of the plate body; a step groove 4 is provided on one side of the fixed step mold base of the plate body 1; a movable step mold base 5 with a plurality of steps movably embedded in the inner side of the step groove 4; the fixed step mold base 3 and the movable step mold base 5 are fitted together to form a step body; a square column 6 is provided on the back of the movable step mold base 5; the square column 6 is embedded from the long through groove 2; a slot 7 is provided opposite to the square column of each group of the long through grooves 2; a shoulder pole 8 is movably inserted into the slot 7; and a plurality of threads are provided on the shoulder pole 8 through hole; a screw 9 pressed against the outer surface of the plate body is screwed into the threaded through hole; the back template includes a first plate body 10 and a second plate body 11 which are perpendicular to each other; and an inclined plate 12 which is integrally formed between the first plate body 10 and the second plate body 11; the inner sides of the first plate body 10 and the inclined plate 12 form a right angle 13; the cross plate includes an end plate 14; the end plate 14 is provided with an open groove 15 which is engaged with the end angle of the plate body on the side close to the plate body; the end plate 14 is provided with a dovetail groove 16 which is engaged with the first plate body on the side facing away from the open groove; the plate body 1 and the end plate 14 are fixed by a first set of screws 17; the first plate body 10 and the end plate 14 are fixed by a second set of screws 18; the second plate body 11 and the plate body 1 are fixed by a third set of screws 19.

[0022] The second step is mold assembly. First, complete the front template assembly, insert the movable step mold base into the step groove, then insert the square column into the long slot, and insert the shoulder pole into the square column, and finally lock the movable step mold base through the screw; then, respectively connect the end plate with the front template and the back template, and finally assemble the front template, the back template and the cross plate into one by the first set of screws to the third set of screws;

[0023] The third step is the pouring of the stairs. When pouring, first place the lower pad in the curing mold, then use the lifting equipment to turn the mold sideways, and at the same time, lift the mold onto the pad so that the side of the mold faces upwards, feed the steel mesh into the mold through the opening at the top of the mold, feed the lifting ear embedded parts into the mold, and finally feed the concrete into the mold for pouring. During pouring, vibrate it with a vibrating rod;

[0024] The fourth step is curing. During curing, steam is introduced regularly to solidify and replenish water to complete the curing;

[0025] The fifth step is demoulding. When demoulding, first use the lifting equipment to lift the mold out of the curing bin and lay it flat. Then, remove the first to third sets of screws, then loosen the screws, gently tap the movable step mold base to make it displace laterally, tap the movable step mold base in turn until the movable step mold base is displaced, then put the pry bar into the pry hole, and pry the pry bar synchronously to complete the pre-detachment of the plate; lift the front template away through the lifting equipment. Since the fixed step mold base has only one step and no cascade is generated, it can be directly lifted away; then, remove the end plate. When removing the end plate, just tap the side push. Finally, demould the back template. Before demoulding the back template, first open the lifting hole, and use the hole opening equipment to open the groove at the lifting ear, and use the lifting equipment to lift the step away from the lifting template.

[0026] Wherein, a pressing groove is arranged on the outer surface of the plate body 1 facing the screw rod; and the end of the screw rod 9 is pressed into the pressing groove.

[0027] Wherein, the front template, the back template and the side of the cross-board are provided with lifting holes or lifting ears 20.

[0028] The second plate body 11 is provided with a pry hole 21 at a location close to the plate body 1 ; and the cross plate 14 is provided with a pry hole 21 at a location close to the plate body 1 .

[0029] In another embodiment, the stair mold also includes a curing mold, and the curing mold includes a plurality of curing bins 22, a steam pipe 23 is provided inside the curing bin 22; a plurality of injection holes are provided on the steam pipe 23; and the steam pipe 23 is connected to a steam system at both ends.

[0030] The novel prefabricated assembled concrete staircase mold manufacturing method of the present invention provides a staircase casting mold and a maintenance mold. The step surface of the casting mold is composed of a movable mold and a fixed mold assembled with each other, thereby improving the demoulding efficiency and preventing the stairs from being lost during demoulding.

[0031] The above embodiments are only preferred implementations of the present invention, so all equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A new method for manufacturing a prefabricated concrete staircase mold. It is characterized in that The manufacturing method is as follows: The first step is to manufacture a staircase mold, the staircase mold comprising a front template, a back template and a cross-board; the front template comprises a plate body; a plurality of groups of long through grooves are arranged on the plate body at intervals; a fixed step mold base with a step is integrally formed between two long through grooves on the inner surface of the plate body; a step groove is formed on one side of the fixed step mold base; a movable step mold base with a plurality of steps is movably embedded in the inner side of the step groove; the fixed step mold base and the movable step mold base are fitted together to form a step body; a square column is arranged on the back of the movable step mold base; the square column is embedded from the long through groove; a slot is provided opposite to the square column of each group of the long through grooves; a shoulder pole is movably inserted into the slot; The shoulder pole is provided with a plurality of threaded through holes; screws pressed against the outer surface of the plate body are screwed into the threaded through holes; the back template comprises a first plate body and a second plate body perpendicular to each other; and an inclined plate integrally formed between the first plate body and the second plate body; the first plate body and the inner sides of the inclined plate form a right angle; the cross-plate comprises an end plate; an open groove engaged with the end angle of the plate body is provided on the side of the end plate close to the plate body; a dovetail groove engaged with the first plate body is provided on the side of the end plate away from the opening groove; the plate body and the end plate are fixed by a first set of screws; the first plate body and the end plate are fixed by a second set of screws; the second plate body and the plate body are fixed by a third set of screws; The second step is mold assembly. First, complete the front template assembly, insert the movable step mold base into the step groove, then insert the square column into the long slot, and insert the shoulder pole into the square column, and finally lock the movable step mold base through the screw; then, respectively connect the end plate with the front template and the back template, and finally assemble the front template, the back template and the cross plate into one by the first set of screws to the third set of screws; The third step is the pouring of the stairs. When pouring, first place the lower pad in the curing mold, then use the lifting equipment to turn the mold sideways, and at the same time, lift the mold onto the pad so that the side of the mold faces upwards, feed the steel mesh into the mold through the opening at the top of the mold, feed the lifting ear embedded parts into the mold, and finally feed the concrete into the mold for pouring. During pouring, vibrate it with a vibrating rod; The fourth step is curing. During curing, steam is introduced regularly to solidify and replenish water to complete the curing; The fifth step is demoulding. When demoulding, first use the lifting equipment to lift the mold out of the curing bin and lay it flat. Then, remove the first to third sets of screws, then loosen the screws, gently tap the movable step mold base to make it displace laterally, tap the movable step mold base in turn until the movable step mold base is displaced, then put the pry bar into the pry hole, and pry the pry bar synchronously to complete the pre-detachment of the plate; lift the front template away through the lifting equipment. Since the fixed step mold base has only one step and no cascade is generated, it can be directly lifted away; then, remove the end plate. When removing the end plate, just tap the side push. Finally, demould the back template. Before demoulding the back template, first open the lifting hole, and use the hole opening equipment to open the groove at the lifting ear, and use the lifting equipment to lift the step away from the lifting template.

2. The manufacturing method of the novel prefabricated concrete staircase mold according to claim 1, characterized in that: a pressing groove is arranged on the outer surface of the plate body opposite to the screw; the end of the screw is pressed into the pressing groove.

3. The manufacturing method of the novel prefabricated concrete staircase mold according to claim 1, characterized in that: lifting holes or lifting ears are arranged on the front template, the back template and the side of the cross plate.

4. The manufacturing method of the novel prefabricated concrete staircase mold according to claim 1, characterized in that: prying holes are arranged at the place where the second plate body is in close contact with the plate body; prying holes are arranged at the place where the cross plate is in close contact with the plate body.

5. The manufacturing method of the novel prefabricated concrete staircase mold according to claim 1, characterized in that: the staircase mold further comprises a curing mold, the curing mold comprises a plurality of curing chambers, a steam pipe is arranged inside the curing chamber; a plurality of spraying holes are arranged on the steam pipe; the head and the tail ends of the steam pipe are connected to a steam system.

Images