Outer mold of core-lifting pipe making machine

Abstract

The utility model discloses an outer mold of a core-lifting pipe making machine, and relates to the field of core-lifting type pipe making. Comprising an outer mold body, an outer mold top ring is arranged at the top end of the outer mold body, and the outer mold top ring is detachably connected with the outer mold body; and a wear-resistant layer is arranged on the inner surface of the outer mold top ring. Furthermore, the wear-resistant layer is a wear-resistant alloy ring. Furthermore, the wear-resistant layer is composed of a plurality of arc-shaped wear-resistant alloy sheets which are uniformly distributed on the inner wall of the outer mold top ring. Furthermore, a flange plate I is fixedly arranged on the top surface of the outer mold body; a second flange plate matched with the first flange plate is fixedly arranged on the bottom face of the outer mold top ring. According to the utility model, the problem that the top of the outer die orifice is abraded under the spinning of the outer die, the inner die and the spigot rolling disc in the pipe manufacturing process is effectively solved, and only the outer die top ring or the wear-resistant layer needs to be replaced when the abrasion is generated, so that the cost of replacing the outer die is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of core-lifting tube making, and in particular to the improvement of the outer mold structure of the core-lifting tube making machine. Background Technology

[0002] The core-lifting pipe-making machine is a new type of concrete pipe-making equipment that combines the advantages of radial extrusion and core mold vibration processes. It achieves efficient and high-density pipe forming through high-frequency vibration and automated control. The inner mold of the core-lifting pipe-making machine rises vertically via a hydraulic system, cooperating with the outer mold to form the pipe cavity. Concrete is injected from the bottom distributor, and high-frequency vibration and mechanical compaction ensure the joint is compacted, ultimately achieving one-time pipe forming.

[0003] like Figure 5 As shown, during the pipe manufacturing process, under the spinning pressure of the upper part of the outer mold 1 and the top of the socket pressing plate 3, the top edge of the pipe blank 4 is gradually formed. This pressure from the outer mold 1, inner mold 2, and socket pressing plate 3 causes wear on the inside of the outer mold 1's edge. This wear directly affects the pipe forming quality and dimensions, leading to poor fit with the socket and reduced sealing performance. Currently, the only solution to these problems is to replace the entire outer mold, but remaking the entire outer mold is costly.

[0004] Therefore, how to improve the wear resistance of the outer mold and reduce its cost has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] This utility model addresses the above-mentioned technical problems by providing an external core-forming tube machine that allows for convenient replacement of easily worn areas, thereby reducing replacement costs.

[0006] The technical solution of this utility model is: it includes an outer mold body, and an outer mold top ring is provided at the top of the outer mold body, and the outer mold top ring is detachably connected to the outer mold body;

[0007] The inner surface of the outer mold top ring is provided with a wear-resistant layer.

[0008] Furthermore, the wear-resistant layer is a wear-resistant alloy ring.

[0009] Furthermore, the wear-resistant layer consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the inner wall of the outer mold top ring.

[0010] Furthermore, a flange is fixedly provided on the top surface of the outer mold body;

[0011] The bottom surface of the outer mold top ring is fixedly provided with a flange two that is compatible with the flange one.

[0012] Furthermore, the outer mold top ring is thickened, the inner ring surface of the outer mold top ring and the inner surface of the outer mold body are on the same inner cylindrical surface, and the bottom surface of the outer mold top ring is provided with a positioning step structure.

[0013] This invention, through its detachable and replaceable outer mold top ring and wear-resistant layer, avoids the need to replace the entire outer mold in cases of localized wear. Based on the above concept, this invention proposes two different implementation methods: one, a flange-type for easier replacement; and two, a welded type, which requires cutting to remove the worn outer mold top ring before welding on a new one for continued use. This effectively solves the problem of wear on the top of the outer mold opening caused by the spinning of the outer mold, inner mold, and spigot pressing disc during pipe manufacturing. When wear occurs, only the outer mold top ring or wear-resistant layer needs to be replaced, significantly reducing the cost of replacing the outer mold. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of the first embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Enlarged view at point M in the middle.

[0017] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0018] Figure 4 yes Figure 3 Enlarged view at point N in the middle.

[0019] Figure 5 This is a schematic diagram of the background technology structure of this utility model.

[0020] In the picture:

[0021] 1 is the outer mold body, 11 is the outer mold top ring, 111 is flange one, 112 is flange two, 113 is the wear-resistant layer, 2 is the inner mold, 3 is the spigot rolling plate, and 4 is the tube blank.

[0022] The hollow arrow in the diagram indicates the direction of movement of the inner mold. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] This utility model includes an outer mold body 1, and an outer mold top ring 11 is provided at the top of the outer mold body 1. The outer mold top ring 11 is detachably connected to the outer mold body 1.

[0028] The inner surface of the outer mold top ring 11 is provided with a wear-resistant layer 113.

[0029] The wear-resistant layer 113 is a wear-resistant alloy ring. This invention provides two embodiments of the wear-resistant layer 113; the first is an integral circular ring.

[0030] The second type is where the wear-resistant layer 113 consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the inner wall of the outer mold top ring 11. The wear-resistant layer 113 can be a whole ring or several alloy sheets, and can be installed by welding or fixing with screws. The wear-resistant layer 113 can be made of stainless steel or wear-resistant alloy.

[0031] The first embodiment of this utility model is as follows: Figure 1 , 2 As shown, a flange 111 is fixedly provided on the top surface of the outer mold body 1;

[0032] The bottom surface of the outer mold top ring 11 is fixedly equipped with a flange 112 that is compatible with flange 111. In use, flange 111 and flange 112 are removed, a new outer mold top ring 11 is replaced, and then the flange is reconnected.

[0033] The first embodiment of this utility model is as follows: Figure 3 , 4 As shown, the outer mold top ring 11 is thickened, and the inner ring surface of the outer mold top ring 11 is on the same inner cylindrical surface as the inner surface of the outer mold body 1. The bottom surface of the outer mold top ring 11 is provided with a positioning step structure. During installation, the outer mold top ring 11 can be welded to the outer mold body 1 after aligning with the positioning step structure. When the outer mold top ring 11 needs to be replaced, simply cut off the worn outer mold top ring 11 and weld the new one.

[0034] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention based on the technical content disclosed in this application. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the protection scope of the present invention. Furthermore, some terminology used in this specification and claims is not limiting but merely for ease of description.

Claims

1. An outer mold for a core-forming tube machine, comprising an outer mold body (1), characterized in that, An outer mold top ring (11) is provided at the top of the outer mold body (1), and the outer mold top ring (11) is detachably connected to the outer mold body (1); The inner surface of the outer mold top ring (11) is provided with a wear-resistant layer (113).

2. The outer mold of the core-lifting tube-making machine according to claim 1, characterized in that, The wear-resistant layer (113) is a wear-resistant alloy ring.

3. The outer mold of the core-forming tube machine according to claim 1, characterized in that, The wear-resistant layer (113) consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the inner wall of the outer mold top ring (11).

4. The outer mold of a core-forming tube machine according to claim 1, 2, or 3, characterized in that, The top surface of the outer mold body (1) is fixedly provided with a flange (111). The bottom surface of the outer mold top ring (11) is fixedly provided with a flange two (112) that is compatible with the flange one (111).

5. The outer mold of a core-forming tube machine according to claim 1, 2, or 3, characterized in that, The outer mold top ring (11) is thickened, and the inner ring surface of the outer mold top ring (11) and the inner surface of the outer mold body (1) are on the same inner cylindrical surface. The bottom surface of the outer mold top ring (11) is provided with a positioning step structure.

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