Nodular cast iron pipe mold capable of preventing mud core from being mistakenly placed

Abstract

The utility model discloses a nodular cast iron pipe mold capable of preventing a mud core from being mistakenly placed, and belongs to the technical field of casting. The mold comprises a core box and an outer mold, a loam core is arranged in the core box and comprises an STD loam core and a TYT loam core, STD core box quick-changing pieces are arranged at the two ends of the STD loam core, and TYT core box quick-changing pieces are arranged at the two ends of the TYT loam core; a pipe fitting casting mold is arranged in the outer mold, the pipe fitting casting mold comprises an STD pipe fitting casting mold and a TYT pipe fitting casting mold, STD outer mold quick-changing pieces are arranged at the two ends of the STD pipe fitting casting mold, and TYT outer mold quick-changing pieces are arranged at the two ends of the TYT pipe fitting casting mold. In order to solve the problem that scrapped nodular cast iron pipe fittings are produced due to the fact that the loam core is mistakenly placed, in the loam core placing process, an outer mold quick-changing piece is installed on an outer mold in advance, the outer mold quick-changing piece and the loam core of the same model are provided with a matched mistake-proof ring, and due to the interference effect of the loam core mistake-proof ring, the loam core of the mistake model cannot be placed in place.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a ductile iron pipe mould which can prevent the mud core from being misplaced. Background Art

[0002] The process of placing the mud core is to place the mud core on the lower mold parting surface of the casting cavity, and then cover the upper cavity of the casting cavity after placing the mud core. This process of placing the mud core is called "placement of the mud core". For ductile iron pipe fittings of the same specification and type but with different socket joints, in order to save mold investment, a set of shared molds plus socket quick-change parts are used for casting production. For example, the two ductile iron pipe fittings of the utility model (UNI TYT pipe fittings and UNI STD pipe fittings) are of the same specification and type, but the socket types of the joints are different. Their casting production is realized on a set of molds (outer mold + core box) using the form of interchangeable socket quick-change parts.

[0003] A Chinese patent with publication number CN216324960U discloses a casting mud core fastening structure, including the preparation of an upper cavity mud core, so that a connecting cavity is formed in the solidified upper cavity mud core; the preparation of a lower cavity mud core, placing a lower fastener in a core positioning position, and the lower fastener is buried in the cavity mud core for core splicing, and the connecting piece is fixedly connected to the lower fastener from the connecting cavity downward, so that the upper cavity mud core and the lower cavity mud core are locked together, reducing the stress on the mud core and achieving the purpose of preventing the mud core from breaking.

[0004] In the above patent, there is a situation where the mud core is misplaced, thereby producing scrapped ductile iron pipe fittings; therefore, it does not meet the existing needs, and a ductile iron pipe mold that prevents the mud core from being misplaced is proposed. Utility Model Content

[0005] The utility model aims to provide a ductile iron pipe mold which can prevent the wrong mud core from being placed. Different types of mud cores are manufactured on the same set of core boxes by using different core box quick-change parts. When the quick-change parts assist in the mud core molding, one end of the mud cores of different types has different anti-mistake rings. In the process of placing the mud core, the outer mold is pre-installed with the outer mold quick-change parts, and then the mud cores of the same type are placed in the outer mold quick-change parts. The outer mold quick-change parts and the mud cores of the same type have matching anti-mistake rings. Due to the interference of the mud core anti-mistake ring, the wrong type of mud core cannot be put into place, which avoids placing the wrong mud core and thus casting the wrong pipe fittings. The problems in the prior art can be solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a core box and an outer mold, wherein a mud core is arranged inside the core box, wherein the mud core comprises an STD mud core and a TYT mud core, STD core box quick-change parts are arranged at both ends of the STD mud core, and an STD core box anti-error ring is arranged at one end of the STD core box quick-change part, and TYT core box quick-change parts are arranged at both ends of the TYT mud core, and a TYT core box anti-error ring is arranged at one end of the TYT core box quick-change part; a pipe fitting mold is arranged inside the outer mold, wherein the pipe fitting mold comprises an STD pipe fitting mold and a TYT pipe fitting mold, STD outer mold quick-change parts are arranged at both ends of the STD pipe fitting mold, and an STD outer mold anti-error ring is arranged at one end of the STD outer mold quick-change part, and TYT outer mold quick-change parts are arranged at both ends of the TYT pipe fitting mold, and a TYT outer mold anti-error ring is arranged at one end of the TYT outer mold quick-change part.

[0007] Preferably, the STD mud core is located inside the STD pipe fitting casting mold, and the STD mud core assists in molding the inner cavity of the STD pipe fitting casting mold; the TYT mud core is located inside the TYT pipe fitting casting mold, and the TYT mud core assists in molding the inner cavity of the TYT pipe fitting casting mold.

[0008] Preferably, the STD core box anti-error ring is matched with the STD outer mold anti-error ring, and the TYT core box anti-error ring is matched with the TYT outer mold anti-error ring.

[0009] Preferably, the STD core box quick-change part is connected to the core box via screws, and the TYT core box quick-change part is connected to the core box via screws.

[0010] Preferably, positioning blocks are provided at both ends of the mud core.

[0011] Preferably, the outer side surfaces of the STD outer mold quick-change component and the TYT outer mold quick-change component are both provided with corresponding markings.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides different anti-mistake rings at one end of mud cores of different models. During the process of placing the mud core, the outer mold is pre-installed with an outer mold quick-change part. The outer mold quick-change part and the mud core of the same model have matching anti-mistake rings. Due to the interference of the mud core anti-mistake ring, the mud core of the wrong model cannot be put in place, ensuring that the wrong mud core will not be placed when producing different models of pipe fittings in the form of a set of shared molds plus different quick-change parts.

[0014] 2. The utility model uses different core box quick-change parts on the same core box to manufacture different types of mud cores; uses different outer mold quick-change parts on the same outer mold to manufacture different types of pipe castings, thereby reducing the number of molds required and saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the outer mold structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the anti-misalignment ring structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 A magnified view of part A;

[0019] Figure 5 For this utility model Figure 3 A magnified view of part B;

[0020] Figure 6 For this utility model Figure 3 A magnified view of part C;

[0021] Figure 7 For this utility model Figure 3 Enlarged view of part D.

[0022] In the figure: 1. mud core; 101. STD mud core; 102. TYT mud core; 2. core box; 3. TYT core box quick change; 301. TYT core box anti-error ring; 4. STD core box quick change; 401. STD core box anti-error ring; 5. outer mold; 6. pipe fitting casting; 7. TYT outer mold quick change; 701. TYT outer mold anti-error ring; 8. STD outer mold quick change; 801. STD outer mold anti-error ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] To solve the problem of producing scrapped ductile iron pipe fittings due to wrong mud core, please refer to Figure 1-7The utility model provides an embodiment: a ductile iron pipe mold for preventing the mud core from being misplaced, comprising a core box 2 and an outer mold 5, a mud core 1 is arranged inside the core box 2, positioning blocks are arranged at both ends of the mud core 1, the mud core 1 comprises an STD mud core 101 and a TYT mud core 102, STD core box quick-change parts 4 are arranged at both ends of the STD mud core 101, the STD core box quick-change parts 4 are connected to the core box 2 by screws, and an STD core box anti-misplacement ring 401 is arranged at one end of the STD core box quick-change parts 4, TYT core box quick-change parts 3 are arranged at both ends of the TYT mud core 102, the TYT core box quick-change parts 3 are connected to the core box 2 by screws, and a TYT core box anti-misplacement ring 301 is arranged at one end of the TYT core box quick-change parts 3;

[0025] A pipe fitting casting mold 6 is arranged inside the outer mold 5, and the pipe fitting casting mold 6 includes an STD pipe fitting casting mold and a TYT pipe fitting casting mold. STD outer mold quick change parts 8 are arranged at both ends of the STD pipe fitting casting mold, and one end of the STD outer mold quick change part 8 is arranged with an STD outer mold anti-error ring 801. TYT outer mold quick change parts 7 are arranged at both ends of the TYT pipe fitting casting mold, and one end of the TYT outer mold quick change part 7 is arranged with a TYT outer mold anti-error ring 701. The outer sides of the STD outer mold quick change part 8 and the TYT outer mold quick change part 7 are both provided with corresponding markings. The STD outer mold quick change part 8 and the TYT outer mold quick change part 7 share the outer mold 5, and the STD core box quick change part 4 and the TYT core box quick change part 3 share the core box 2, which reduces the number of molds required, saves manpower and material resources, and further reduces the manufacturing cost.

[0026] One end of the STD core box quick-change part 4 and the TYT core box quick-change part 3 are respectively provided with a STD core box anti-mistake ring 401 and a TYT core box anti-mistake ring 301, and the STD core box quick-change part 4 and the TYT core box quick-change part 3 respectively assist the mud core 1 to be formed into the STD mud core 101 and the TYT mud core 102, so that one end of the STD mud core 101 and the TYT mud core 102 are respectively provided with the STD core box anti-mistake ring 401 and the TYT core box anti-mistake ring 301;

[0027] One end of the STD outer mold quick-change part 8 and the TYT outer mold quick-change part 7 are respectively provided with an STD outer mold anti-error ring 801 and a TYT outer mold anti-error ring 701, the STD core box anti-error ring 401 is matched with the STD outer mold anti-error ring 801, and the TYT core box anti-error ring 301 is matched with the TYT outer mold anti-error ring 701;

[0028] When it is necessary to produce a pipe casting mold 6, the required model of outer mold quick-change parts is installed on the outer mold 5 in advance, and then the mud core 1 of the same model is placed in the outer mold quick-change parts. Due to the interference between the unmatched anti-error rings, the mud core 1 of the wrong model cannot be put into place, ensuring that the wrong mud core will not be placed when producing different models of pipe fittings with a set of shared molds plus different quick-change parts, thereby further improving the production efficiency of pipe fittings.

[0029] Working principle: Different types of mud cores 1 are manufactured on the same set of core boxes 2 by using different core box quick-change parts. When the core box quick-change parts assist in molding the mud core 1, different types of mud cores 1 have different anti-error rings at one end. In the process of placing the mud core, the outer mold 5 is pre-installed with the required type of outer mold quick-change parts, and then the mud core 1 of the same type is placed into the outer mold quick-change parts. The outer mold quick-change parts and the mud core 1 of the same type have matching anti-error rings. Due to the interference of the mud core anti-error ring, the wrong type of mud core 1 cannot be put into place, thus avoiding the situation where the wrong mud core is placed and the wrong pipe fittings are cast.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ductile iron pipe mold for preventing the core from being misplaced, comprising a core box (2) and an outer mold (5), characterized in that: A mud core (1) is arranged inside the core box (2), and the mud core (1) comprises an STD mud core (101) and a TYT mud core (102). STD core box quick-change parts (4) are arranged at both ends of the STD mud core (101), and one end of the STD core box quick-change part (4) is provided with an STD core box anti-mistake ring (401). TYT core box quick-change parts (3) are arranged at both ends of the TYT mud core (102), and one end of the TYT core box quick-change part (3) is provided with a TYT core box anti-mistake ring (301). 01); a pipe fitting mold (6) is arranged inside the outer mold (5), and the pipe fitting mold (6) includes an STD pipe fitting mold and a TYT pipe fitting mold. STD outer mold quick-change parts (8) are arranged at both ends of the STD pipe fitting mold, and one end of the STD outer mold quick-change part (8) is arranged with an STD outer mold anti-mistake ring (801); TYT outer mold quick-change parts (7) are arranged at both ends of the TYT pipe fitting mold, and one end of the TYT outer mold quick-change part (7) is arranged with a TYT outer mold anti-mistake ring (701).

2. A ductile iron pipe mold for preventing the core from being misplaced according to claim 1, characterized in that: The STD mud core (101) is located inside the STD pipe fitting casting mold, and the STD mud core (101) assists in the inner cavity molding of the STD pipe fitting casting mold; the TYT mud core (102) is located inside the TYT pipe fitting casting mold, and the TYT mud core (102) assists in the inner cavity molding of the TYT pipe fitting casting mold.

3. A ductile iron pipe mold for preventing the core from being misaligned according to claim 1, characterized in that: The STD core box anti-error ring (401) is matched with the STD outer mold anti-error ring (801), and the TYT core box anti-error ring (301) is matched with the TYT outer mold anti-error ring (701).

4. A ductile iron pipe mold for preventing the core from being misaligned according to claim 1, characterized in that: The STD core box quick-change component (4) is connected to the core box (2) via screws, and the TYT core box quick-change component (3) is connected to the core box (2) via screws.

5. A ductile iron pipe mold for preventing the mud core from being misplaced according to claim 1, characterized in that: Positioning blocks are arranged at both ends of the mud core (1).

6. A ductile iron pipe mold for preventing the mud core from being misplaced according to claim 1, characterized in that: The outer side surfaces of the STD outer mold quick-change component (8) and the TYT outer mold quick-change component (7) are both provided with corresponding markings.

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