阅读说明：本技术 一种管道弯头模具及模流分析方法 (Pipeline elbow die and die flow analysis method ) 是由 胡清義 姚震 艾立东 花丹红 于 2021-06-24 设计创作，主要内容包括：本发明揭示了一种管道弯头模具及模流分析方法,其中方法包括如下步骤：S100、根据相关要求进行弯头模流分析标准库结构框架的构建；S200、根据模流分析标准库的相关内容进行相关的模拟分析,得出最佳的分析方案；S300、根据弯头结构及分析方案进行相应模具的制造,模具制造完成后进行现场试模；S400、根据上述过程创建相关的模流分析指导书,以供后续调用。本发明提升了管道弯头的产品质量,降低了管道弯头的不合格率,且提升了管道弯头的加工效率,同时有效方便了生产团队进行管道弯头生产的标准化管理及规范化管理,且方便了对新员工或初学者进行教学指导。(The invention discloses a pipeline elbow mould and a mould flow analysis method, wherein the method comprises the following steps: s100, constructing an elbow modular flow analysis standard library structural framework according to related requirements; s200, performing relevant simulation analysis according to relevant contents of the modular flow analysis standard library to obtain an optimal analysis scheme; s300, manufacturing a corresponding die according to the elbow structure and the analysis scheme, and performing field die testing after the die is manufactured; s400, creating a related modular flow analysis guide book according to the process for subsequent calling. The invention improves the product quality of the pipe elbow, reduces the reject ratio of the pipe elbow, improves the processing efficiency of the pipe elbow, effectively facilitates the standardized management and the standardized management of the pipe elbow production by a production team, and facilitates the teaching guidance of new staff or beginners.)

1. The utility model provides a pipeline elbow mould which characterized in that: the mould comprises a first forming mould and a second forming mould which are matched with each other, wherein a mounting seat used for being connected with a mould closing driving mechanism is arranged in the center of the surface of one end, away from the second forming mould, of the first forming mould, a pouring opening used for conveying a molten raw material into the mould is formed in the surface of one end, away from the pouring opening, of the second forming mould, a plurality of forming wedges are slidably mounted on the surface of one end, away from the pouring opening, of the second forming mould, and a rebound assembly used for driving the forming wedges to automatically return is detachably mounted on the forming wedges.

2. The piping elbow mold of claim 1, wherein a cooling water passage is provided in each of the first forming die and the second forming die.

3. The pipe bend mold of claim 1, wherein the resilient member comprises a driving cam detachably mounted at an end of the forming wedge by a screw, a pushing groove matching with the driving cam is formed in a corresponding position on a surface of one end of the first forming mold away from the mounting seat, an extension spring is connected to one end of the driving cam away from the forming wedge, a mounting block is connected to one end of the extension spring away from the forming wedge, and the mounting block is mounted on a side wall of the second forming mold by a screw.

4. A pipeline elbow die flow analysis method is characterized by comprising the following steps:

s100, constructing an elbow modular flow analysis standard library structural framework according to related requirements;

s200, performing relevant simulation analysis according to relevant contents of the modular flow analysis standard library to obtain an optimal analysis scheme;

s300, manufacturing a corresponding die according to the elbow structure and the analysis scheme, and performing field die testing after the die is manufactured;

s400, creating a related modular flow analysis guide book according to the process for subsequent calling.

5. The pipe bend die flow analysis method of claim 4, wherein in step S100, a bend angle α exists between the two ends of the bend, said α including at least three angles of 45 °, 90 ° and 180 °.

6. The pipe elbow modular flow analysis method of claim 5, wherein in step S100, the modular flow analysis standard library structural framework is constructed by the specific steps of:

s101, numbering and archiving by taking the elbow bending angle alpha as a primary class;

s102, respectively setting a second class for numbering and archiving products and moulds under the first class;

and S103, numbering and archiving according to three levels of categories of drawings, digital-analog schemes, analysis schemes and real objects under the product category.

7. The pipe elbow die flow analysis method of claim 6, wherein in step S103, said analysis schemes comprise a casting system scheme, a cooling system distribution scheme and a process parameter scheme.

8. The pipe elbow die flow analysis method according to claim 4, wherein in step S200, the specific operation of obtaining the optimal analysis scheme is:

s201, simulating an analysis scheme in the structural framework of the analysis standard library according to a digital-analog scheme to obtain a simulation result;

s202, analyzing the simulation result, and if the simulation result does not meet the requirement, adjusting and simulating the corresponding content of the simulated analysis scheme until the simulation result meets the requirement.

9. The pipe elbow die flow analysis method according to claim 4, wherein in step S300, after the on-site trial molding is completed, the plastic part is inspected and whether it is qualified is judged according to the inspection result.

10. The pipe elbow modular flow analysis method as claimed in claim 4, wherein in step S400, the modular flow analysis guide includes design analysis history for recording the number of times of change of the analysis plan and the contents of the change, a modular flow analysis report for recording the relevant analysis results, and an analysis flow for interpretation of the lead-in of the product to the analysis result process.

Technical Field

The invention relates to the technical field of pipeline design, in particular to a pipeline elbow mould and a mould flow analysis method.

Background

In a piping system, a bend is a pipe that changes the direction of a pipe. The elbow is made of cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metal, plastics, etc.

The production of the pipe elbow needs to use a corresponding mould, but in the using process of the existing pipe elbow mould, after the forming is finished, the disassembly of the forming wedge block inside the pipe elbow mould is usually manually disassembled, the operation is time-consuming and labor-consuming, and the processing efficiency is influenced, but a driving mechanism is additionally added, so that the manufacturing cost of the mould is greatly increased, meanwhile, the pipe elbow is easy to have the problems of large shrinkage rate, residual stress and the like in the actual production process, so that the quality defects of deformation, perforation and the like of the product are caused, the mechanical property and the assembly precision of the product are influenced, the production benefit and the brand reputation of an enterprise are further influenced, and on the other hand, because the types of the pipe elbows are more, various performance indexes are different; and the difference of individual analysis experience, theoretical knowledge and the like of technicians in an enterprise leads to the difference of the analysis results of products with the same structure, and the formulation and implementation of a scheme are influenced.

Disclosure of Invention

The invention aims to provide a pipeline elbow mould and a mould flow analysis method, which can improve the production efficiency and the qualification rate of a bent pipe and realize the standardization and the standardized management of bent pipe processing and the subsequent teaching guidance.

In order to solve the technical problem, the invention provides a pipeline elbow mould which comprises a first forming mould and a second forming mould which are matched with each other, wherein an installation seat used for being connected with a mould closing driving mechanism is arranged in the center of the surface of one end, away from the second forming mould, of the first forming mould, a pouring opening used for conveying a molten raw material into the mould is arranged on the surface of one end, away from the pouring opening, of the second forming mould, a plurality of forming wedges are slidably installed on the surface of one end, away from the pouring opening, of the second forming mould, and a rebound assembly used for driving the forming wedges to automatically return is detachably installed on the forming wedges.

Furthermore, cooling water channels are arranged in the first forming die and the second forming die.

Furthermore, the resilience assembly comprises a driving inclined block detachably mounted at the end part of the forming wedge block through a screw, a pushing groove matched with the driving inclined block is formed in the corresponding position of the surface of one end, away from the mounting seat, of the first forming die, one end, away from the forming wedge block, of the driving inclined block is connected with an extension spring, one end, away from the forming wedge block, of the extension spring is connected with a mounting block, and the mounting block is mounted on the side wall of the second forming die through a screw.

The invention also provides a pipeline elbow mould flow analysis method, which comprises the following steps:

s100, constructing an elbow modular flow analysis standard library structural framework according to related requirements;

s200, performing relevant simulation analysis according to relevant contents of the modular flow analysis standard library to obtain an optimal analysis scheme;

s300, manufacturing a corresponding die according to the elbow structure and the analysis scheme, and performing field die testing after the die is manufactured;

s400, creating a related modular flow analysis guide book according to the process for subsequent calling.

Further, in step S100, the construction of the modular flow analysis standard library structural framework specifically includes:

s101, numbering and archiving by taking the elbow bending angle alpha as a primary class;

s102, respectively setting a second class for numbering and archiving products and moulds under the first class;

and S103, numbering and archiving according to three levels of categories of drawings, digital-analog schemes, analysis schemes and real objects under the product category.

Further, in step S100, a bending angle α exists between two ends of the elbow, where α includes at least three normal angles of 45 °, 90 °, and 180 °.

Further, the analysis scheme comprises a casting system scheme, a cooling system distribution scheme and a process parameter scheme.

Further, the specific operation for obtaining the optimal analysis scheme is as follows:

s201, simulating an analysis scheme in the structural framework of the analysis standard library according to a digital-analog scheme to obtain a simulation result;

s202, analyzing the simulation result, and if the simulation result does not meet the requirement, adjusting and simulating the corresponding content of the simulated analysis scheme until the simulation result meets the requirement.

Further, in step S300, after the field mold testing is completed, the plastic part is detected, and whether the plastic part is qualified is determined according to the detection result.

Further, in step S400, the modular flow analysis instruction includes a design analysis history for recording the number of times of change of the analysis plan and the content of the change, a modular flow analysis report for recording the relevant analysis result, and an analysis flow for interpreting the product introduced into the analysis result process.

Through the technical scheme, the invention has the following beneficial effects:

(1) according to the invention, the pipeline elbow is subjected to mold flow analysis, so that information such as a pouring system, a cooling system, process parameters and the like is optimally designed, the product quality of the pipeline elbow is greatly improved, and the reject ratio of the pipeline elbow is reduced;

(2) according to the invention, different types of pipe elbows are numbered and filed, and a modular flow analysis standard library is built, so that the standardized management of the pipe elbow production by a production team is effectively facilitated;

(3) according to the invention, a set of analysis specifications in an enterprise is formed by establishing the modular flow analysis instruction book, so that the standardized management of the production of the pipeline elbow is realized, and meanwhile, the modular flow analysis instruction book can be used as the learning reference material of new staff or beginners to perform teaching instruction;

(4) according to the pipeline elbow mould provided by the invention, through the arrangement of the resilience assembly, the automatic return operation of the forming wedge block can be realized, so that the forming wedge block and the plastic part are automatically separated after the mould is opened, the time and the labor are saved, the processing efficiency of the pipeline elbow is improved, and meanwhile, the resilience assembly is simple in structural design and low in cost.

Drawings

FIG. 1 is a schematic view of the overall structure of the pipe bend mold of the present invention;

FIG. 2 is a schematic view of the overall structure of the pipe bend mold of the present invention;

FIG. 3 is a schematic flow diagram of the method for analyzing the modular flow of a pipe elbow of the present invention;

FIG. 4 is a schematic structural view of a pipe elbow of the present invention having a 45 degree bend angle;

FIG. 5 is a schematic structural view of a pipe elbow of the present invention having a 90 degree bend angle;

FIG. 6 is a schematic structural view of a pipe elbow of the present invention having a bend angle of 180;

FIG. 7 is a schematic structural view of a pipe elbow of the present invention having a bend angle of 60 °;

FIG. 8 is a schematic diagram of a modular flow analysis standard library framework in an embodiment of the method for modular flow analysis of pipe elbows according to the present invention.

Detailed Description

The pipe bend die and die flow analysis method of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1-2, an embodiment of the present invention provides a pipeline elbow mold, which includes a first molding die 1 and a second molding die 2 that are matched with each other, a mounting seat 4 for connecting with a mold closing driving mechanism is provided at a center of an end surface of the first molding die 1 away from the second molding die, a pouring opening 5 for conveying a molten raw material into the mold is provided at an end surface of the second molding die 2 away from the first molding die 1, a plurality of molding wedges 6 are slidably mounted on an end surface of the second molding die 2 away from the pouring opening 5, and a resilient assembly 7 for driving the molding wedges 6 to automatically return is detachably mounted on the molding wedges 6.

The resilience assembly 7 comprises a driving inclined block 8 which is detachably mounted at the end part of the forming wedge block 6 through a screw, the first forming die 1 is far away from the corresponding position of the surface of one end of the mounting seat 4, an advancing groove 9 matched with the driving inclined block 8 is formed in the corresponding position, the driving inclined block 8 is far away from one end of the forming wedge block 6 is connected with an extension spring 10, the extension spring 10 is far away from one end of the forming wedge block 6 is connected with a mounting block 11, and the mounting block 11 is mounted on the side wall of the second forming die 2 through a screw.

Further, a cooling water channel 3 is arranged in each of the first forming die 1 and the second forming die 2.

In this embodiment, when the first molding die 1 and the second molding die 2 are closed, the port of the pushing groove 9 extrudes the driving inclined block 8, so that the molding inclined block 6 moves into the second molding die 2, and the driving inclined block 8 is matched with the molding grooves on the first molding die 1 and the second molding die 2 to form the molding die cavity of the pipe elbow, molten material is poured through the pouring port 5, after molding is completed, the first molding die 1 and the second molding die 2 are opened, in the process of opening the dies, the driving inclined block 8 gradually gets away from the pushing groove 9, and under the action of the extension spring 10, the molding inclined block 6 automatically returns to separate from the molded elbow, so that the molding inclined block 6 does not need to be manually pulled away, time and labor are saved, the processing efficiency of the pipe elbow is improved, and meanwhile, the rebound assembly 7 is simple in structural design, and low in cost is caused.

As shown in fig. 3, an embodiment of the present invention provides a method for analyzing a mold flow of a pipe elbow, including the following steps:

s100, constructing an elbow modular flow analysis standard library structural framework according to related requirements;

specifically, the pipe elbows are various in types, for example, according to the bending angle of the elbow, the bending angle is set as α, as shown in fig. 4 to 7, α is 45 °, 90 ° or 180 ° most commonly used, and further includes other abnormal angle elbows such as 60 ° according to engineering requirements, when a standard library frame structure is built, the pipe elbows need to be classified first, typical products are selected from each type as standard research objects, the typical products are also correspondingly classified into a special type for a plurality of unusual special cases, and meanwhile, each product is numbered and filed, so that subsequent retrieval and query are facilitated, and the construction of the whole modular flow analysis standard library frame structure specifically operates as: the method comprises the steps of firstly numbering and archiving by taking the bending angle of an elbow as a primary category, then numbering and archiving by respectively setting a secondary category for a product and a mould under the primary category, and finally numbering and archiving by setting a tertiary category for a drawing, a digital-analog scheme, an analysis scheme and a real object under the product category.

S200, performing relevant simulation analysis according to relevant contents of the modular flow analysis standard library to obtain an optimal analysis scheme;

specifically, the analysis scheme comprises a pouring system scheme, a cooling system distribution scheme and a process parameter scheme, a corresponding simulation result can be obtained by performing digital simulation on the analysis scheme of a certain pipeline elbow according to a digital-analog scheme, whether the simulation result meets the requirement is judged according to the simulation result, if the simulation result does not meet the requirement, corresponding information of the simulated analysis scheme is adjusted and simulated until the simulation result meets the requirement, and the optimal analysis scheme can be obtained.

S300, manufacturing a corresponding die according to the elbow structure and the analysis scheme, and performing field die testing after the die is manufactured;

specifically, the optimal scheme obtained according to the digital simulation is only a preliminary result, the feasibility of the final scheme is verified by an experiment, and whether the plastic part produced by the test mold is qualified or not is judged by testing the mold, so that the feasibility of the scheme is verified.

S400, creating a related modular flow analysis instruction book according to the process for subsequent calling;

specifically, for a product which is optimally designed and qualified through experimental verification, a design scheme and a process need to be completely recorded, so that a modular flow analysis guide book is designed, wherein the modular flow analysis guide book comprises a design analysis record, a modular flow analysis report and an analysis process, the design analysis record is used for recording the change times and the change content of the analysis scheme, the modular flow analysis report is used for recording related analysis results, the analysis process is used for reading the product introduced into the analysis result process, and the modular flow analysis guide book forms the technical standard of modular flow analysis inside an enterprise and the standardized management of a modular flow analysis team, and can also be used as the learning reference data of a new employee or a beginner.

The following is a list of preferred embodiments of the pipe bend modular flow analysis method for clearly illustrating the contents of the present invention, and it should be understood that the contents of the present invention are not limited to the following embodiments, and other modifications by conventional technical means of those skilled in the art are within the scope of the idea of the present invention.

The invention provides an embodiment of a pipeline elbow mould and a mould flow analysis method thereof, which comprises the following steps:

the first step is as follows: constructing a framework: firstly, performing first-level classification according to angles of the pipe elbows, numbering and archiving 45-degree pipe elbows according to Roman numerals I, numbering and archiving 90-degree pipe elbows according to Roman numerals II, numbering and archiving 180-degree pipe elbows according to Roman numerals III, classifying other pipe elbows with unusual angles into other pipe elbows, numbering and archiving according to Roman numerals IV, then setting second-level classifications according to products and molds under the first-level classification, numbering and archiving by respectively using (1) and (2), and finally setting drawing, digifax scheme, analysis scheme and object four classifications under the product classification, numbering and archiving by respectively using (i), (ii), (iii) and (iv), as shown in FIG. 8;

the second step is that: simulation analysis: selecting a pipeline elbow to be processed, for example, selecting a pipeline elbow for processing a 90-degree corner, firstly, taking relevant data of the pipeline elbow for processing the 90-degree corner in a modular flow analysis standard library, carrying out digital simulation on an analysis scheme according to a digital-to-analog scheme to obtain a simulation result, analyzing the simulation result, if the simulation result cannot meet production requirements, adjusting the simulated analysis scheme according to requirements, for example, for the problem of overlarge shrinkage rate, changing a material with small shrinkage rate and setting boundary size, for the problems of welding marks and cavitation, changing gate arrangement, optimizing flow channel design, and for the problem of uneven temperature field, adopting conformal cooling, and optimally adjusting process parameters by combining the experience of an injection molding technologist of a company;

the third step: manufacturing a mould and testing the mould: according to the structure of the pipeline elbow with the 90-degree bend angle and the obtained optimal analysis scheme, a specific mould is manufactured, the manufacturing of the mould comprises the manufacturing of a first forming mould 1 and a second forming mould 2, a corresponding forming wedge block 6 and a springback component 7 are manufactured according to requirements, the arrangement of cooling water channels in the first forming mould 1 and the second forming mould and the arrangement of a pouring opening in the second forming mould 2 are designed according to the optimized analysis scheme, after the mould is manufactured, the mould is tested, the mould is subjected to injection molding according to the process requirements, an injection molding part is taken out after a certain time, the injection molding part is detected, and whether the injection molding part is qualified or not is judged according to the detection result.

The fourth step: if the injection molding piece is detected to be qualified, the design scheme and the process of the injection molding piece are completely recorded to form a mold flow analysis instruction book, so that a set of analysis specifications inside an enterprise are formed, wherein the analysis specifications comprise information of recording scheme change times and change contents, mold flow analysis results, a model lead-in flow to the analysis results and the like.

In summary, compared with the prior art, the invention has the following advantages:

(1) according to the invention, the pipeline elbow is subjected to mold flow analysis, so that information such as a pouring system, a cooling system, process parameters and the like is optimally designed, the product quality of the pipeline elbow is greatly improved, and the reject ratio of the pipeline elbow is reduced;

(2) according to the invention, different types of pipe elbows are numbered and filed, and a modular flow analysis standard library is built, so that the standardized management of the pipe elbow production by a production team is effectively facilitated;

(3) the method forms a set of analysis specifications in an enterprise by establishing the modular flow analysis instruction book, realizes the standardized management of the production of the pipeline elbow, and meanwhile, the modular flow analysis instruction book can be used as the learning reference material of new employees or beginners, thereby being convenient for teaching and guiding the new employees or beginners.

(4) According to the pipeline elbow mould provided by the invention, through the arrangement of the resilience assembly, the automatic return operation of the forming wedge block can be realized, so that the forming wedge block and the plastic part are automatically separated after the mould is opened, the time and the labor are saved, the processing efficiency of the pipeline elbow is improved, and meanwhile, the resilience assembly is simple in structural design and low in cost.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.