Inner mold of core-lifting pipe making machine

Abstract

The utility model discloses an inner mold of a core-lifting pipe making machine, and relates to the field of core-lifting type pipe making. Comprising an inner die body, a conical section is arranged at the top end of the inner die body, a pressure-bearing wear-resisting section is arranged on the lower edge of the conical section, the lower edge of the pressure-bearing wear-resisting section is detachably connected with the inner die body, and the conical section, the pressure-bearing wear-resisting section and the inner die body are coaxial. Furthermore, the pressure-bearing wear-resisting section comprises an annular wear-resisting section body and a first flange plate fixedly connected to the bottom face. A second flange plate is arranged on the top edge of the inner mold body, and the first flange plate is matched with the second flange plate and detachably connected with the second flange plate. According to the utility model, the wear-resistant layer is arranged on the thickened wear-resistant section body, so that the wear resistance is further improved, and the problem that the pressure-bearing wear-resistant section is worn during spinning in the rolling process of the top spigot rolling disc is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of core-lifting tube making, and in particular to the improvement of the internal 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 6 As shown, during the tube-making process, under the spinning pressure of the inner mold 1 and the insertion rolling plate 3 at the top of the mold opening, the top edge of the tube blank 5 is squeezed by the inner mold 1, the outer mold 2, and the insertion rolling plate 3, which will impact the top 4 of the mold opening of the inner mold 1. Figure 6 Wear occurs in the shaded area (middle section). Wear on the inner mold 1 directly affects the forming quality and dimensions of the pipe, leading to poor fit with the socket and reduced sealing performance. Currently, the only solution to these problems is to replace the entire inner mold, but this method is costly.

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

[0005] This utility model addresses the above-mentioned technical problems by providing an inner mold for a core-forming tube machine that allows for easy replacement of vulnerable areas, thereby reducing processing costs.

[0006] The technical solution of this utility model is as follows: it includes an inner mold body, a tapered section is provided at the top of the inner mold body, a pressure-bearing and wear-resistant section is provided at the lower edge of the tapered section, the lower edge of the pressure-bearing and wear-resistant section is detachably connected to the inner mold body, and the tapered section, the pressure-bearing and wear-resistant section and the inner mold body are coaxial.

[0007] Furthermore, the pressure-bearing wear-resistant section includes an annular wear-resistant section body and a flange fixedly connected to the bottom surface;

[0008] The top edge of the inner mold body is provided with a second flange, which is adapted to the first flange and can be detachably connected.

[0009] Furthermore, the top edge of the pressure-bearing and wear-resistant section body is connected to the lower edge of the conical section.

[0010] Furthermore, the pressure-bearing and wear-resistant section includes an annular thickened wear-resistant section body, and a wear-resistant layer is provided on the outer surface of the thickened wear-resistant section body;

[0011] The top edge of the thickened wear-resistant section body is connected to the bottom edge of the conical section, and the bottom edge of the thickened wear-resistant section body is connected to the top edge of the inner mold body.

[0012] Furthermore, the wear-resistant layer is a wear-resistant alloy ring.

[0013] Furthermore, the wear-resistant layer consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the outer surface of the thickened wear-resistant section.

[0014] Furthermore, the cylinder of the pressure-bearing and wear-resistant section is provided with several evenly distributed spokes.

[0015] This invention avoids replacing the entire inner mold after localized wear by providing detachable and replaceable pressure-bearing and wear-resistant sections at the bottom of the conical section and the top edge of the inner mold body. Only the local components need to be replaced to achieve mold reuse, significantly reducing operating costs. Based on the above concept, this invention proposes two different implementations: the former, a flange-type, is easier to replace; the latter, a welded type, requires cutting to remove the worn pressure-bearing and wear-resistant section before welding on a new component for continued use. Furthermore, the wear-resistant layer on the thickened wear-resistant section body further improves wear resistance, effectively solving the wear problem caused by the top-insertion rolling disc during the rolling process on the pressure-bearing and wear-resistant section. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a structural schematic diagram of the first embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view at point M in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0020] Figure 4 yes Figure 3 Enlarged view at point N in the middle.

[0021] Figure 5 These are three AA sectional views.

[0022] Figure 6 This is a structural schematic diagram of the background technology of this utility model.

[0023] In the picture:

[0024] 1 is the inner mold body, 11 is the conical section, 12 is the pressure-bearing and wear-resistant section, 13 is flange one, 14 is flange two, 15 is the thickened wear-resistant section body, 16 is the wear-resistant layer, 17 is the spoke, 2 is the outer mold, 3 is the spigot rolling disc, 4 is the top of the mold opening, and 5 is the tube blank. Detailed Implementation

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] This utility model is as follows Figure 1-5 As shown, it includes an inner mold body 1, a tapered section 11 at the top of the inner mold body 1, and a pressure-bearing and wear-resistant section 12 at the lower edge of the tapered section 11. The lower edge of the pressure-bearing and wear-resistant section 12 is detachably connected to the inner mold body 1. The tapered section 11, the pressure-bearing and wear-resistant section 12 and the inner mold body 1 are coaxial.

[0030] The first embodiment of this utility model is as follows: Figure 1 ,2 As shown, it adopts a flange-type structure that is easy to disassemble, specifically:

[0031] The pressure-bearing wear-resistant section 12 includes an annular wear-resistant section body and a flange 13 fixedly connected to the bottom surface.

[0032] The top edge of the inner mold body 1 is provided with flange 2 14. Flange 1 13 is compatible with flange 2 14 and can be detachably connected. When the wear-resistant section 12 is worn and needs to be replaced, simply unscrew the bolts and nuts connecting flange 1 13 and flange 2 14, replace the new wear-resistant section 12, and then reassemble flange 1 13 and flange 2 14.

[0033] Furthermore, the top edge of the pressure-bearing and wear-resistant section 12 is connected to the lower edge of the conical section 11. This connection is typically achieved through welding.

[0034] The second embodiment of this utility model is as follows: Figure 3 , 4 As shown, the pressure-bearing and wear-resistant section 12 includes an annular thickened wear-resistant section body 15, and a wear-resistant layer 16 is provided on the outer surface of the thickened wear-resistant section body 15.

[0035] The top edge of the thickened wear-resistant section body 15 is connected to the bottom edge of the conical section 11, and the bottom edge of the thickened wear-resistant section body 15 is connected to the top edge of the inner mold body 1.

[0036] Furthermore, the wear-resistant layer 16 is a wear-resistant alloy ring, which can be made of wear-resistant materials such as stainless steel or wear-resistant alloys.

[0037] Furthermore, the wear-resistant layer 16 consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the outer surface of the thickened wear-resistant section body 15. The wear-resistant layer 16 can be a single ring or composed of multiple arc-shaped sheets, and can be directly welded or screwed to the outer surface of the thickened wear-resistant section body 15. When the wear-resistant layer 16 wears, it can be directly replaced, effectively reducing replacement costs.

[0038] Furthermore, considering that during the core-forming process, the top of the tube blank 5 inside the mold cavity will generate a large radial force on the inner and outer molds under the action of the insertion rolling disc 3, in order to avoid deformation of the pressure-bearing and wear-resistant section 12, the present invention also considers the following technical measures, such as... Figure 5 As shown, several evenly distributed spokes 17 are provided inside the cylinder of the pressure-bearing and wear-resistant section 12. Welding several spokes into the cylinder of the pressure-bearing and wear-resistant section 12 can effectively prevent deformation caused by uneven stress when the inner mold is compressed, and increase the overall strength of the pressure-bearing and wear-resistant section 12.

[0039] 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 inner mold for a core-forming tube machine, comprising an inner mold body (1), wherein a tapered section (11) is provided at the top end of the inner mold body (1), characterized in that, A pressure-bearing and wear-resistant section (12) is provided at the lower edge of the conical section (11). The lower edge of the pressure-bearing and wear-resistant section (12) is detachably connected to the inner mold body (1). The conical section (11), the pressure-bearing and wear-resistant section (12), and the inner mold body (1) are coaxial.

2. The inner mold of the core-forming tube machine according to claim 1, characterized in that, The pressure-bearing wear-resistant section (12) includes an annular wear-resistant section body and a flange (13) fixedly connected to the bottom surface. The top edge of the inner mold body (1) is provided with flange two (14), flange one (13) is adapted to flange two (14) and can be detachably connected.

3. The inner mold of a core-forming tube machine according to claim 2, characterized in that, The top edge of the pressure-bearing and wear-resistant section (12) is connected to the lower edge of the conical section (11).

4. The inner mold of a core-forming tube machine according to claim 1, characterized in that, The pressure-bearing wear-resistant section (12) includes an annular thickened wear-resistant section body (15), and a wear-resistant layer (16) is provided on the outer surface of the thickened wear-resistant section body (15). The top edge of the thickened wear-resistant section body (15) is connected to the bottom edge of the conical section (11), and the bottom edge of the thickened wear-resistant section body (15) is connected to the top edge of the inner mold body (1).

5. The inner mold of a core-forming tube machine according to claim 4, characterized in that, The wear-resistant layer (16) is a wear-resistant alloy ring.

6. The inner mold of a core-lifting tube-making machine according to claim 4, characterized in that, The wear-resistant layer (16) consists of several arc-shaped wear-resistant alloy sheets evenly distributed on the outer surface of the thickened wear-resistant section body (15).

7. The inner mold of a core-forming tube machine according to claim 1, characterized in that, The cylinder of the pressure-bearing and wear-resistant section (12) is provided with several evenly distributed spokes (17).

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