Cement product mold

Abstract

The utility model relates to the technical field of prefabricated part molds, in particular to a cement product mold which comprises a mold body, an outer negative pressure pipe is arranged in the mold body in a penetrating mode, a breathable net is arranged in the outer negative pressure pipe, an inner negative pressure pipe is arranged in the breathable net in a sleeved mode, and one end of the outer negative pressure pipe is sleeved with a left end cover. The left end cover is connected with the inner negative pressure pipe in a threaded meshing mode, the other end of the outer negative pressure pipe is sleeved with a right end cover, the right end cover is connected with the inner negative pressure pipe in a threaded meshing mode, an outer discharging hole is formed in the right end cover, and the outer discharging hole is connected with an air extracting pump through a pipeline. Through holes are formed in the side wall of the outer negative-pressure pipe and the side wall of the inner negative-pressure pipe in the mold body, redundant water and gas of a cement product in the mold body are pumped out through cooperation of the outer negative-pressure pipe, the inner negative-pressure pipe and the ventilation net by means of the sucking pump, and therefore the defects of bubbles, shrinkage cavities and the like are avoided, and the product quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated part molds, in particular to a cement product mold. BACKGROUND

[0002] Cement pressure plate is a new type of building material, and domestic warm asbestos fiber cement pressure plate is mainly used, and the main materials are concrete and other additional materials. The cement flat plate is produced by pulp preparation, taking, pressing and curing. It has been widely used in various fields of the construction industry due to its superior performance.

[0003] During the pressing process of the press, if the pressing time is too short, the excess water and gas in the material cannot be discharged in time, which seriously affects the quality of the finished product of the fiber cement pressure plate; if the pressing time is too long, the processing efficiency will be affected, and the production cost will be increased. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a cement product mold, which adopts the following technical scheme:

[0005] A cement product mold comprises:

[0006] a mold body;

[0007] an outer negative pressure pipe, which is arranged in the mold body;

[0008] a gas permeable net, which is arranged in the outer negative pressure pipe;

[0009] an inner negative pressure pipe, which is sleeved in the gas permeable net;

[0010] a left end cover, which is sleeved on the outer side of one end of the outer negative pressure pipe and connected with the inner negative pressure pipe through thread engagement;

[0011] a right end cover, which is sleeved on the outer side of the other end of the outer negative pressure pipe and connected with the inner negative pressure pipe through thread engagement;

[0012] a vibrating rod, whose rod body extends to the inner negative pressure pipe through the right end cover;

[0013] an outer discharge hole, which is arranged on the right end cover and connected with a gas suction pump through a pipeline;

[0014] a through hole, which is arranged in the side wall of the outer negative pressure pipe and the side wall of the inner negative pressure pipe in the mold body;

[0015] The mold body is provided with a supporting device for supporting the outer negative pressure pipe.

[0016] Further, the outer negative pressure pipe comprises two semicircular pipes which are connected through concave-convex structures to form a circular pipe structure.

[0017] Further, the outer negative pressure pipe is provided with a sealing ring at the connection with the mold body.

[0018] Further, the supporting device comprises a concave wheel and a support, and the support is connected with the concave wheel in a rotating structure.

[0019] Further, the air permeable mesh has a mesh number ranging from 100 to 150.

[0020] Further, the left end cover is provided with an embedded groove for placing the vibration rod body.

[0021] The utility model discloses the beneficial effect is: utilize the air pump through the cooperation of outer negative pressure pipe, inner negative pressure pipe and air permeable mesh, forms the negative pressure environment in the mold body, and the excess moisture and gas of cement product in the mold body are extracted, thereby avoiding the generation of bubble, shrinkage hole and other defects, improve the quality and production efficiency of product.

[0022] By designing the outer negative pressure pipe as a split structure of two semicircular pipes, the air permeable mesh inside can be conveniently cleaned, and cement solidification on the surface of the air permeable mesh when not in use is avoided, thereby improving practicability.

[0023] By setting the concave wheel, the pulled-out outer negative pressure pipe is supported, the pulling-out efficiency is improved, the labor intensity is reduced, and the outer negative pressure pipe is effectively prevented from being bent, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the three-dimensional structure schematic diagram of the utility model.

[0025] Figure 2 is the section structure schematic diagram of the utility model.

[0026] Figure 3 is the explosion structure schematic diagram of the left end cover of the utility model

[0027] IN THE DRAWINGS

[0028] 1, mold body, 2, outer negative pressure pipe, 3, outer exhaust hole, 4, inner negative pressure pipe, 5, left end cover, 6, right end cover, 7, rod body, 8, concave-convex structure, 9, sealing ring, 10, concave wheel, 11, embedded groove. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings and examples, so that the public can better master the implementation method of the utility model, and the specific implementation scheme of the utility model is as follows:

[0030] A cement product mold includes a mold body 1, an external negative pressure pipe 2 passing through the mold body 1, a ventilated mesh inside the external negative pressure pipe 2, and an inner negative pressure pipe 4 sleeved inside the ventilated mesh. A left end cap 5 is fitted over one end of the external negative pressure pipe 2, and the left end cap 5 is connected to the inner negative pressure pipe 4 via a threaded connection. A right end cap 6 is fitted over the other end of the external negative pressure pipe 2, and the right end cap 6 is connected to the inner negative pressure pipe 4 via a threaded connection. The right end cap 6 has an external exhaust hole 3, which is connected to an air extraction system via a pipeline. Pump; A vibrating rod is provided on one side of the mold body 1. The rod body 7 of the vibrating rod extends through the right end cover 6 into the inner negative pressure pipe 4. Through holes are opened on the side walls of the outer negative pressure pipe 2 and the inner negative pressure pipe 4 inside the mold body 1. By using the air pump in conjunction with the outer negative pressure pipe 2, the inner negative pressure pipe 4 and the ventilated mesh, a negative pressure environment is formed inside the mold body 1, which extracts excess moisture and gas from the cement products inside the mold body 1, thereby avoiding the generation of defects such as bubbles and shrinkage cavities, and improving product quality and production efficiency.

[0031] Specifically, the external negative pressure pipe 2 includes two semi-circular pipes. By designing the external negative pressure pipe 2 as a split structure of two semi-circular pipes, it is convenient to clean the internal ventilation mesh and avoid cement solidification on its surface when not in use, thus improving practicality. The two semi-circular pipes are connected by a concave-convex structure 8 to form a circular pipe structure, and the concave-convex structure 8 improves installation efficiency.

[0032] It should be noted that a sealing ring 9 is provided at the connection between the external negative pressure pipe 2 and the mold body 1 to prevent water from flowing out from here and causing pollution in the site.

[0033] It should be noted that a support device for supporting the external negative pressure pipe 2 is provided on one side of the mold body 1. The support device includes a concave wheel 10 and a bracket. The bracket and the concave wheel 10 are connected in a rotating structure. By setting the concave wheel, the pulled-out external negative pressure pipe 2 is supported, which improves the pulling efficiency, reduces labor intensity, and effectively prevents the external negative pressure pipe 2 from bending after being pulled out after processing long cement products, thereby improving its service life.

[0034] Specifically, the mesh size is 100, but in other embodiments it can be 130 or 150 mesh to prevent cement particles from being carried out.

[0035] In order to better transmit the vibration of the vibrator to the outer negative pressure pipe 2, a groove 11 for placing the vibrator body 7 is provided inside the left end cap 5.

[0036] The working principle and process of this utility model are as follows:

[0037] The cement product mold is placed under the lower part of the press, and concrete is poured into the mold body 1, then the upper pressing plate of the press is driven by the press to press on the upper end surface of the concrete, the vibration rod and the air pump are started, and as the air pump works, the space enclosed by the pressing plate and the mold body 1 is gradually pumped into a vacuum environment, the excess moisture and air in the concrete enter the air-permeable net through the through holes, the moisture and air enter the inner negative pressure pipe 4 through the air-permeable net, and are discharged by the air pump through the outer discharge hole 3.

[0038] After pressing for a predetermined time, at this time the concrete has initial setting, the pressing plate is moved upward by the press, the outer negative pressure pipe 2 is pulled by the hydraulic oil cylinder on one side of the mold body 1 to drive the internal parts to move outward, and the outer negative pressure pipe 2 is supported by the concave wheel 10.

[0039] The left end cover 5 and the right end cover 6 on the two sides are unscrewed, the two semicircular pipes of the outer negative pressure pipe 2 are taken off, the air-permeable net is washed with clean water, and the air-permeable holes are prevented from being blocked in subsequent work.

[0040] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the protection scope of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Although the utility model is described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of the utility model described herein.

Claims

1. A cementitious article mold, characterized by, The utility model relates to a kind of moulds, including: Mould body (1); Outer negative pressure pipe (2), outer negative pressure pipe (2) is set in mould body (1); Breathable net, breathable net is arranged inside outer negative pressure pipe (2); Inner negative pressure pipe (4), inner negative pressure pipe (4) is set inside breathable net; Left end cover (5), left end cover (5) is set in outer negative pressure pipe (2) one end outside, and be connected with inner negative pressure pipe (4) by thread engagement mode; Right end cover (6), right end cover (6) is set in outer negative pressure pipe (2) other end outside, and be connected with inner negative pressure pipe (4) by thread engagement mode; Vibration rod, the stick body (7) of vibration rod passes through right end cover (6) and extends to inner negative pressure pipe (4) inside; Outer exhaust hole (3), outer exhaust hole (3) is set on right end cover (6), and outer exhaust hole (3) is provided with suction pump by pipeline connection; Through hole, through hole is set in the side wall of outer negative pressure pipe (2) and the side wall of inner negative pressure pipe (4) in mould body (1); Mould body (1) one side is provided with the support device of supporting outer negative pressure pipe (2).

2. A cementitious article mold according to claim 1, wherein: Outer negative pressure pipe (2) includes two half-round pipes, and two half-round pipes are inserted and connected by concave-convex structure (8) and are enclosed into a circular pipe structure.

3. A cementitious article mold according to claim 1, wherein: Outer negative pressure pipe (2) and mould body (1) connection place is provided with sealing ring (9).

4. A cementitious article mold according to claim 1, wherein: Support device includes concave wheel (10) and support, and support is connected with concave wheel (10) with rotating structure mode.

5. A cementitious article mold according to claim 4, wherein: The mesh number range of breathable net is 100-150 mesh.

6. A cementitious article mold according to claim 4, wherein: Left end cover (5) is provided with the embedded slot (11) of placing vibration rod stick body (7) in.

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