A piston molding assembly tool

Abstract

The utility model provides a kind of piston modeling combination tool, belong to the technical field of foundry technology equipment, including middle box, heighten box and bottom box, the upper end surface of heighten box is equipped with annular stop, annular stop is inlayed with sand-coated ring groove chill, the joint surface of sand-coated ring groove chill and heighten box is provided with sealing mud strip around.This utility model has omitted the tedious thread fastening operation by the insertion type assembly of annular stop and sand-coated ring groove chill, improves assembly efficiency;Secondly, the optimized assembly gap design avoids the risk of thread deformation failure under high temperature environment, ensures the dimensional stability under hot state condition, the multiple sealing structure of annular sealing mud strip effectively blocks the penetration path of molten iron, solves the difficult problem of disassembly caused by molten iron penetration gap in traditional process, while guarantees casting size precision and surface quality, cooperates box clamp quick connection structure, realizes the effect of convenient disassembly and reliable sealing of tooling.

Description

Technical Field

[0001] This utility model belongs to the technical field of casting process equipment, specifically relating to a piston-shaped assembly tooling. Background Technology

[0002] As the core moving component of an engine, the piston's ring grooves directly bear the reciprocating compression and friction of the piston rings, placing strict requirements on material properties, necessitating high density and a uniform, fine-grained structure. In the casting process, a sand-coated chill process is typically used to ensure the microstructure and properties of the piston ring grooves.

[0003] Currently, the traditional process uses external threaded connections to fix the sand-coated ring groove chills to the sand box. This structure has obvious defects: First, the threaded fastening operation is time-consuming and labor-intensive, resulting in low assembly efficiency; second, the threaded connection is prone to deformation and failure in the high-temperature casting environment; more seriously, once molten iron seeps into the thread gap, it will not only make disassembly difficult, but may also affect the dimensional accuracy and surface quality of the casting. Utility Model Content

[0004] The purpose of this utility model is to provide a piston-shaped assembly tooling, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A piston-shaped assembly tooling includes an inner box, an extended box, and a bottom box. The upper end face of the extended box is provided with an annular stop. A sand-coated annular groove chill is embedded in the annular stop. A sealing mud strip is arranged around the joint surface of the sand-coated annular groove chill and the extended box, and extends to the upper surface of the bottom box.

[0007] In a preferred embodiment of this utility model, the upper end of the heightened box is detachably connected to the middle box via a box clamp.

[0008] In a preferred embodiment of this utility model, the bottom of the raised box is in contact with the top of the base box.

[0009] As a preferred embodiment of this utility model, an assembly gap is formed between the outer peripheral surface of the sand-coated annular groove chill and the inner wall of the annular stop.

[0010] As a preferred embodiment of this utility model, the sealing mud strip is an annular strip structure with a circular cross-section.

[0011] As a preferred embodiment of this utility model, the upper surface of the bottom box is provided with a positioning groove that cooperates with the sealing mud strip.

[0012] As a preferred embodiment of this utility model, the side wall of the raised box is provided with an observation window for observing the internal state.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the plug-in assembly of the annular stop and the sand-coated annular groove chill eliminates the cumbersome thread tightening operation, thus improving assembly efficiency; secondly, the optimized assembly gap design avoids the risk of thread deformation and failure under high temperature conditions, ensuring dimensional stability under hot working conditions; the multiple sealing structure of the annular sealing mud strip effectively blocks the path of molten iron penetration, solving the problem of difficult disassembly caused by molten iron penetration into the thread gap in traditional processes, while ensuring the dimensional accuracy and surface quality of the casting; and with the quick connection structure of the box clamp, it achieves convenient disassembly and assembly of the tooling and reliable sealing effect. Attached Figure Description

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

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a drawing of the overall structural assembly tooling of this utility model;

[0017] Figure 3 This is a process drawing of the piston design of this utility model.

[0018] In the diagram: 1. Middle box; 2. Extended box; 3. Bottom box; 4. Annular stop; 5. Sand-covered ring groove chill; 6. Sealing mud strip; 7. Box clamp. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example

[0023] Reference Figures 1-3 This embodiment of the present invention provides a piston-shaped assembly tooling, including a middle box 1, a raised box 2 and a bottom box 3. The upper end face of the raised box 2 is provided with an annular stop 4. A sand-coated annular groove chill 5 is embedded in the annular stop 4. A sealing mud strip 6 is arranged around the joint surface of the sand-coated annular groove chill 5 and the raised box 2, and extends to the upper surface of the bottom box 3.

[0024] Among them, the ring stop 4 is used to replace the traditional threaded connection. Through the combined design of the middle box 1, the heightened box 2 and the bottom box 3, and the sealing structure of the sand-coated ring groove chill 5 and the sealing mud strip 6, the modular assembly of the piston-shaped tooling is realized, which solves the problems of complex assembly and poor sealing in traditional processes and improves the efficiency of tooling assembly and disassembly.

[0025] Specifically, the upper end of the raised box 2 is detachably connected to the middle box 1 via box clamp 7.

[0026] Among them, the box clamp 7 connection structure enables quick assembly and disassembly of the heightened box 2 and the middle box 1. Compared with the traditional bolt connection method, it shortens the operation time and is suitable for production scenarios that require frequent mold changes, while ensuring the strength and stability of the connection parts.

[0027] Furthermore, the bottom of the raised box 2 contacts the top of the bottom box 3.

[0028] The raised box 2 and the bottom box 3 can be installed using fasteners and bolts to ensure the structural stability of the entire tooling during the casting process, prevent misalignment caused by vibration, and retain necessary disassembly for easy maintenance.

[0029] Preferably, an assembly gap is formed between the outer peripheral surface of the sand-coated annular groove chill 5 and the inner wall of the annular stop 4.

[0030] Among them, the circular cross-section sealing mud strip 6 has good sealing performance and compressibility, which can effectively fill the gap of the joint surface and prevent molten iron from leaking out. At the same time, its ring structure design makes installation more convenient.

[0031] Furthermore, the sealing mud strip 6 has an annular strip structure with a circular cross-section.

[0032] Among them, the positioning groove structure on the bottom box 3 enables the precise positioning of the sealing mud strip 6, ensuring the consistency of the sealing strip installation position, avoiding the position deviation problem of manual installation, and enhancing the sealing pressure.

[0033] Furthermore, the side wall of the raised box 2 is provided with an observation window for observing the internal condition.

[0034] Among them, the observation window design on the side wall of the heightened box enables real-time monitoring of the casting process, making it easier for operators to promptly detect the molten iron filling situation and potential problems. Compared with the traditional closed structure, it improves the efficiency of process debugging and significantly enhances the controllability of product quality.

[0035] In use, the middle box 1 and the bottom box 3 are first fixedly connected with bolts to ensure the stability of the basic structure. Then, the raised box 2 is quickly installed to the bottom of the middle box 1 using the box clamp 7. Next, the sand-coated ring groove chill 5 is precisely embedded into the annular stop 4 at the upper end of the raised box 2, and thermal expansion compensation is achieved by utilizing the assembly gap between the two. Then, a circular cross-section sealing mud strip 6 is installed around the joint surface of the sand-coated ring groove chill 5 and the raised box 2, and extends into the positioning groove on the surface of the bottom box 3 to form a complete sealing system. Finally, the casting process is monitored in real time through the observation window on the side wall of the raised box 2 to ensure the quality of molten iron filling.

[0036] In summary, the use of annular stop 4 and sand-coated ring groove chill 5 for embedded fitting, combined with the annular sealing structure of sealing mud strip 6, not only solves the technical problems of complex assembly and poor sealing in traditional threaded connection methods, but also, through the synergistic effect of design elements such as quick connection of box clamp 7, bolt fixing, and assembly gap control, makes the tooling have significant characteristics such as convenient disassembly and assembly, improved stability under vibration environment, and excellent sealing. It is suitable for high-efficiency casting production lines that require frequent mold changes, and while ensuring the casting quality of the piston ring groove, it greatly improves production efficiency and equipment utilization.

[0037] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​such as temperature, pressure, etc., installation arrangements, use of materials, color, orientation, etc. For instance, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure performing the function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this utility model. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0038] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.

[0039] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A piston molding assembly tool characterized by: It includes a middle box (1), a raised box (2) and a bottom box (3). The upper end face of the raised box (2) is provided with an annular stop (4). A sand-coated annular groove chill (5) is embedded in the annular stop (4). A sealing mud strip (6) is arranged around the joint surface of the sand-coated annular groove chill (5) and the raised box (2), and extends to the upper surface of the bottom box (3).

2. A piston skiving assembly tool as defined in claim 1 wherein: The upper end of the heightened box (2) is detachably connected to the middle box (1) via a box clamp (7).

3. A piston skiving assembly tool as defined in claim 2 wherein: The bottom of the raised box (2) is in contact with the top of the bottom box (3).

4. A piston skiving assembly tool as defined in claim 3 wherein: An assembly gap is formed between the outer peripheral surface of the sand-coated annular groove chill (5) and the inner wall of the annular stop (4).

5. A piston skiving assembly tool as defined in claim 4 wherein: The sealing mud strip (6) is an annular strip structure with a circular cross-section.

6. A piston skiving assembly tool as defined in claim 5 wherein: The upper surface of the bottom box (3) is provided with a positioning groove that matches the sealing mud strip (6).

7. A piston skiving assembly tool as defined in claim 6 wherein: The side wall of the raised box (2) is provided with an observation window for observing the internal condition.

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