Exhaust pipe sand core forming die
By inserting the core rod into the straight pipe section of the sand core forming cavity of the exhaust pipe sand core forming mold and driving it to extract it, multiple problems caused by the solidity of the sand core straight pipe section in the prior art are solved, and the effect of reducing sand use and improving strength and quality is achieved.
Patent Information
- Application Number
- CN202420226442.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-01-31
AI Technical Summary
In the existing exhaust pipe sand core forming mold, the straight pipe section of the sand core is solid, resulting in a large amount of sand used and heavy weight, impermeable fire, a lot of sand produced inside, a large amount of gas production, low strength and easy to break.
A sand core forming mold for exhaust pipe is designed. A sand core forming cavity is installed inside the mold, and the core rod is coaxially inserted on the straight pipe section, and the core rod is moved axially through a driving mechanism (including manual drive components and cylinder drive components). After forming, the core rod is pulled out, so that the inner part of the straight pipe section of the sand core is hollow.
By making the straight pipe section of the sand core hollow, the amount and weight of sand are used are reduced, and the amount of gas is generated after burning through is small, the strength is high, and it is not easy to break, which improves the quality of the sand core.
Smart Images
Figure CN222569189U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sand core forming mould for an exhaust pipe. Background Art
[0002] Before manufacturing the exhaust pipe, it is necessary to first make the exhaust pipe sand core, and the exhaust pipe sand core is formed by the corresponding sand core forming mold. In the prior art, no core rod is arranged inside the straight pipe section of the sand core forming cavity, so the straight pipe section of the sand core after forming is solid, which has the following disadvantages: the straight pipe section uses a lot of sand and is heavy, and it is difficult to burn through during firing, resulting in more raw sand inside the straight pipe section, large gas emission, low strength, and easy breakage. Utility Model Content
[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an exhaust pipe sand core forming mold.
[0004] In order to solve the above technical problems, the technical solution of the utility model is: an exhaust pipe sand core molding mold, including a mold body, a sand core molding cavity is arranged inside the mold body, a core rod is coaxially inserted on the straight pipe section of the sand core molding cavity, and the core rod is driven by a driving mechanism to move axially.
[0005] Preferably, the shape of the sand core molding cavity is adapted to the shape of the exhaust pipe sand core.
[0006] Preferably, the straight tube section of the sand core molding cavity has two sections parallel to each other.
[0007] Preferably, the inner ends of the core rods extend to the inner ends of the straight pipe sections, and the outer ends of the core rods extend to the outside of the mold body along the outer ends of the straight pipe sections.
[0008] Preferably, the driving mechanism consists of a manual driving assembly and a cylinder driving assembly; the manual driving assembly is arranged on one of the core rods, and the cylinder driving assembly is arranged on the other core rod.
[0009] Preferably, the cylinder drive assembly comprises a bracket screwed and fastened to the outer surface of the mold body, a cylinder is mounted on the bracket, and a piston rod of the cylinder is coaxially fixedly connected to a corresponding core rod to drive the core rod to axially extend and retract.
[0010] Preferably, the manual drive assembly includes a hammer block, the hammer block is provided with a through hole for a corresponding core rod to coaxially pass through, and the core rod is fixed with hammer limit bosses located in front and rear of the hammer block.
[0011] Compared with the prior art, the utility model has the following beneficial effects: the exhaust pipe sand core forming mold coaxially inserts a core rod on the straight pipe section of the sand core forming cavity, and then pulls out the core rod after the exhaust pipe sand core is formed, so that the interior of the straight pipe section of the sand core is hollow, which not only reduces the amount of sand used and reduces the weight, but also makes it easier to burn through. After the straight pipe section is burned through, it has less gas emission, high strength, and is not easy to break, thereby improving the quality of the sand core.
[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model.
[0014] Figure 2 Schematic diagram of the structure of the exhaust pipe sand core. DETAILED DESCRIPTION
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0018] like Figure 1~2 As shown, this embodiment provides an exhaust pipe sand core molding mold, including a mold body 1, wherein a sand core molding cavity 2 is arranged inside the mold body, and a core rod 4 is coaxially inserted on a straight pipe section 3 of the sand core molding cavity, and the core rod is driven by a driving mechanism to move axially.
[0019] In the embodiment of the utility model, the shape of the sand core molding cavity is adapted to the shape of the exhaust pipe sand core 5 .
[0020] In the embodiment of the utility model, the straight tube section of the sand core molding cavity has two sections parallel to each other.
[0021] In the embodiment of the utility model, the inner end of the core rod extends to the inner end of the straight pipe section, and the outer end of the core rod extends to the outside of the mold body along the outer end of the straight pipe section.
[0022] In the embodiment of the utility model, the driving mechanism is composed of a manual driving assembly 6 and a cylinder driving assembly 7; the manual driving assembly is arranged on one of the core rods, and the cylinder driving assembly is arranged on the other core rod.
[0023] In the embodiment of the utility model, the cylinder drive assembly includes a bracket 8 screwed and fastened to the outer surface of the mold body, and a cylinder 9 is installed on the bracket. The piston rod of the cylinder is coaxially fixed with the corresponding core rod to drive the core rod to axially expand and contract. When the exhaust pipe sand core is formed, the core rod is pulled out by the cylinder drive.
[0024] In the embodiment of the utility model, the manual drive assembly includes a hammer block 10, which is provided with a through hole for the corresponding core rod to coaxially pass through, and the core rod is fixed with hammer limit bosses 11 located in front and rear of the hammer block. After the exhaust pipe sand core is formed, the hammer block is manually driven to move axially forward and backward on the core rod, and the hammer limit boss at the rear is continuously hammered to pull out the core rod.
[0025] In the embodiment of the utility model, the working principle of the utility model is: the exhaust pipe sand core forming mold coaxially inserts a core rod on the straight pipe section of the sand core forming cavity, and then pulls out the core rod after the exhaust pipe sand core is formed, so that the straight pipe section of the sand core is hollow inside, which not only reduces the amount of sand used and reduces the weight, but also makes it easy to burn through. The straight pipe section after burning through has less gas emission, high strength, and is not easy to break, thereby improving the quality of the sand core.
[0026] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.
Claims
1. An exhaust pipe sand core molding mold, comprising a mold body, wherein a sand core molding cavity is arranged inside the mold body, and characterized in that: A core rod is coaxially inserted into the straight tube section of the sand core molding cavity, and the core rod is driven by a driving mechanism to move axially; the shape of the sand core molding cavity is adapted to the shape of the exhaust pipe sand core; the straight tube section of the sand core molding cavity has two sections parallel to each other; the inner ends of the core rods extend to the inner ends of the straight tube sections, and the outer ends of the core rods extend along the outer ends of the straight tube sections to the outside of the mold body; the driving mechanism consists of a manual driving component and a cylinder driving component; the manual driving component is arranged on one of the core rods, and the cylinder driving component is arranged on the other core rod.
2. The exhaust pipe sand core forming mold according to claim 1, characterized in that: The cylinder drive assembly comprises a bracket screwed and fastened to the outer surface of the mold body, a cylinder is mounted on the bracket, and a piston rod of the cylinder is coaxially fixedly connected with a corresponding core rod to drive the core rod to axially extend and retract.
3. The exhaust pipe sand core forming mold according to claim 1, characterized in that: The manual drive assembly includes a hammer block, which is provided with a through hole for a corresponding core rod to coaxially pass through, and the core rod is fixed with hammer limiting bosses located in front and rear of the hammer block.