Inorganic sand core mold for motorcycle cylinder head

Abstract

The utility model relates to the technical field of mold design, in particular to a motorcycle cylinder head inorganic sand core mold which comprises a mold body, an air duct sand core, an auxiliary pouring gate, a hydraulic cylinder, a sliding rail, a sliding block and a cutting piece, the air duct sand core is arranged on one side of the mold body, the auxiliary pouring gate is arranged on one side of the air duct sand core and communicated with the air duct sand core, and the hydraulic cylinder is arranged on the sliding rail. Two ejector rods are arranged below the auxiliary pouring gate, the hydraulic cylinder is fixedly connected with the mold body and located on one side of the air duct, the sliding rail is fixedly connected with the mold body and located on one side of the sliding rail, the sliding block is fixedly connected with the output end of the hydraulic cylinder and located above the sliding rail, and the cutting piece is fixedly connected with the sliding block and located on one side of the sliding block. Through the arrangement of the structure, the problems that a main pouring gate and an auxiliary pouring gate of an existing mold need to be manually removed through a saw blade, and time and labor are wasted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold design, in particular to an inorganic sand core mold for a motorcycle cylinder head. Background Art

[0002] Currently, the production of motorcycle cylinder heads, whether using low-pressure or gravity casting methods, begins with sand core production. Existing sand core materials are typically furan resin-coated sand. Resin decomposes and produces toxic and hazardous pollutants such as methylfuran, benzene, dimethylfuran, toluene, para-xylene, o-xylene, phenol, methylphenol, and naphthalene. The future trend in the foundry industry is for environmentally friendly inorganic sand to replace furan resin-coated sand. Sand core production requires a sand core mold, and the design and manufacture of inorganic sand core molds differ significantly from those of inorganic sand core molds.

[0003] However, the main runner and auxiliary runner of the existing mold must be manually removed using a saw blade, which is very time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide an inorganic sand core mould for a motorcycle cylinder head, which solves the problem that the main runner and the auxiliary runner of the existing mould need to be manually removed by saw blades, which is very time-consuming and labor-intensive.

[0005] To achieve the above-mentioned purpose, the utility model provides an inorganic sand core mold for a motorcycle cylinder head, comprising a mold body, an air duct sand core, an auxiliary runner, a hydraulic cylinder, a sliding rail, a sliding block and a cutting piece. The air duct sand core is arranged on one side of the mold body, the auxiliary runner is arranged on one side of the air duct sand core, the auxiliary runner is connected to the air duct sand core, two push rods are arranged below the auxiliary runner, the hydraulic cylinder is fixedly connected to the mold body and is located on one side of the air duct, the sliding rail is fixedly connected to the mold body and is located on one side of the sliding rail, the sliding block is fixedly connected to the output end of the hydraulic cylinder and is located above the sliding rail, and the cutting piece is fixedly connected to the sliding block and is located on one side of the sliding block.

[0006] The surface of the air duct sand core is provided with a sand core fracture surface, the connection between the air duct sand core and the auxiliary runner is provided with a cut-off opening, and the cut-off piece is provided with a tapered surface, and the tapered surface is adapted to the cut-off opening.

[0007] Among them, an exhaust groove is provided on the outside of the air duct sand core, a V-shaped groove is provided on one side of the air duct sand core, the V-shaped groove is connected to the exhaust groove, and an exhaust hole is provided on the surface of the exhaust groove.

[0008] Wherein, the inorganic sand core mold of the motorcycle cylinder head further includes a heating couple, a heating channel is provided at one end of the mold body, and the heating couple is arranged inside the heating channel.

[0009] The surface of the auxiliary runner is provided with an auxiliary cut.

[0010] The utility model discloses a motorcycle cylinder head inorganic sand core mould, the air channel sand core sets up one side of mould body, the auxiliary runner sets up one side of air channel sand core, the auxiliary runner with air channel sand core intercommunication, the lower portion of auxiliary runner is provided with two top rods, the hydraulic cylinder with mould body fixed connection and located one side of air channel, the sliding rail with mould body fixed connection and located one side of sliding rail, the sliding block with the output of hydraulic cylinder fixed connection and located the upper portion of sliding rail, the cutout piece with sliding block fixed connection and located one side of sliding block, because inorganic sand flowability is poor, through increasing auxiliary runner, completes the film sand core manufacturing, in order to prevent the weight of auxiliary runner leads to the air channel sand core fracture, after sand shooting after making core, before mould opening, the hydraulic cylinder pushes the sliding block, the cutout piece automatically cuts off auxiliary runner, when the top rod ejects, the air channel sand core with auxiliary runner, mutually has no influence, thereby obtains the air channel sand core, has reduced the use amount of inorganic sand, has reduced the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0012] Figure 1 It is the structure schematic diagram of the motorcycle cylinder head inorganic sand core mould of the utility model.

[0013] Figure 2 It is the structure schematic diagram of the auxiliary runner of the utility model. Figure 1 It is the A place local structure enlarged view of the utility model.

[0014] Figure 3 It is the structure schematic diagram of the air channel sand core of the utility model.

[0015] Figure 4 It is the structure schematic diagram of the air channel sand core with pouring system of the utility model.

[0016] Figure 5 It is the structure schematic diagram of the air channel sand core simple cut-off pouring system of the utility model.

[0017] 1-Mold body, 2-Air duct sand core, 3-Auxiliary runner, 4-Main runner, 5-Hydraulic cylinder, 6-Slide rail, 7-Slide block, 8-Cut-off piece, 9-Sand core fracture surface, 10-Cut-off opening, 11-Conical surface, 12-Vent groove, 13-V-groove, 14-Vent hole, 15-Heating couple, 16-Heating channel, 17-Auxiliary incision, 18-Cross runner, 19-Main runner incision. DETAILED DESCRIPTION

[0018] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] See also Figures 1 to 5 The utility model provides an inorganic sand core mold for a motorcycle cylinder head, comprising a mold body 1, an air duct sand core 2, an auxiliary runner 3, a hydraulic cylinder 5, a sliding rail 6, a sliding block 7 and a cutting piece 8. The air duct sand core 2 is arranged on one side of the mold body 1, and the auxiliary runner 3 is arranged on one side of the air duct sand core 2. The auxiliary runner 3 is communicated with the air duct sand core 2. Two push rods are arranged below the auxiliary runner 3. The hydraulic cylinder 5 is fixedly connected to the mold body 1 and is located on one side of the air duct. The sliding rail 6 is fixedly connected to the mold body 1 and is located on one side of the sliding rail 6. The sliding block 7 is fixedly connected to the output end of the hydraulic cylinder 5 and is located above the sliding rail 6. The cutting piece 8 is fixedly connected to the sliding block 7 and is located on one side of the sliding block 7.

[0020] In this embodiment, when using traditional coated sand, it is only necessary to open a main runner 4 on the air duct sand core 2 to form it, and then cut off the main runner 4 from the main runner cutout 19 to complete the manufacturing of the coated sand core. However, when developing inorganic sand cores, due to the poor fluidity of inorganic sand, the auxiliary runner 3 must be added. After the auxiliary runner 3 is added, when the ejector rod is ejected, the sand core fracture surface 9 in the air duct sand core 2 is very easy to break due to the mismatch between the weight of the air duct sand core 2 and the weight of the auxiliary runner 3, so a cross runner must be added. 18 connects the air duct sand core 2 and the auxiliary runner 3 into a whole, and completes the manufacturing of the coated sand core by adding the auxiliary runner 3. In order to prevent the weight of the auxiliary runner 3 from causing the air duct sand core 2 to break, after the core making is completed by sand shooting and before the mold is opened, the hydraulic cylinder 5 pushes the sliding block 7, and the cutting piece 8 automatically cuts off the auxiliary runner 3. At this time, when the push rod is ejected, the air duct sand core 2 and the auxiliary runner 3 have no effect on each other, thereby obtaining the air duct sand core 2, reducing the use of inorganic sand and reducing the production cost.

[0021] Further, the surface of the air duct core 2 is provided with a core fracture surface 9, the joint of the air duct core 2 and the auxiliary runner 3 is provided with a cut-off port 10, the cut-off piece 8 is provided with a tapered surface 11, and the tapered surface 11 is matched with the cut-off port 10.

[0022] In the embodiment, when the cut-off piece 8 moves, the cut-off piece 8 separates the auxiliary runner 3 from the air duct core 2, and forms the cut-off port 10.

[0023] Further, the outer side of the air duct core 2 is provided with an exhaust groove 12, one side of the air duct core 2 is provided with a V-shaped groove 13, the V-shaped groove 13 is communicated with the exhaust groove 12, and the surface of the exhaust groove 12 is provided with an exhaust hole 14.

[0024] In the embodiment, gas is exhausted from the periphery of the air duct core 2 to the exhaust groove 12 through the V-shaped groove 13, and then to the atmosphere through the exhaust groove 12.

[0025] Further, the motorcycle cylinder head inorganic core mold further comprises a heating couple 15, one end of the mold body 1 is provided with a heating channel 16, and the heating couple 15 is arranged in the inside of the heating channel 16.

[0026] In the embodiment, the heating couple 15 is arranged in the mold body 1 to control the temperature of the mold body 1.

[0027] Further, the surface of the auxiliary runner 3 is provided with an auxiliary cut 17.

[0028] In the embodiment, the auxiliary cut 17 is arranged to facilitate the cut-off piece 8 to cut the auxiliary runner 3 from the air duct core 2.

[0029] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the utility model claims still belong to the scope of the utility model.

Claims

1. An inorganic sand core mold for a motorcycle cylinder head, comprising a mold body, characterized in that: It also includes an air duct sand core, an auxiliary runner, a hydraulic cylinder, a sliding rail, a sliding block and a cutting piece. The air duct sand core is arranged on one side of the mold body, the auxiliary runner is arranged on one side of the air duct sand core, the auxiliary runner is communicated with the air duct sand core, two push rods are arranged below the auxiliary runner, the hydraulic cylinder is fixedly connected to the mold body and is located on one side of the air duct, the sliding rail is fixedly connected to the mold body and is located on one side of the sliding rail, the sliding block is fixedly connected to the output end of the hydraulic cylinder and is located above the sliding rail, and the cutting piece is fixedly connected to the sliding block and is located on one side of the sliding block.

2. The inorganic sand core mold for a motorcycle cylinder head according to claim 1, characterized in that: The surface of the air duct sand core is provided with a sand core fracture surface, the connection between the air duct sand core and the auxiliary pouring channel is provided with a cutting opening, and the cutting piece is provided with a tapered surface, and the tapered surface is adapted to the cutting opening.

3. The inorganic sand core mold for a motorcycle cylinder head according to claim 2, characterized in that: An exhaust groove is provided on the outside of the air duct sand core, a V-shaped groove is provided on one side of the air duct sand core, the V-shaped groove is communicated with the exhaust groove, and an exhaust hole is provided on the surface of the exhaust groove.

4. The inorganic sand core mold for a motorcycle cylinder head according to claim 3, characterized in that: The inorganic sand core mold for the motorcycle cylinder head further comprises a heating couple, a heating channel is provided at one end of the mold body, and the heating couple is arranged inside the heating channel.

5. The inorganic sand core mold for a motorcycle cylinder head according to claim 4, characterized in that: Auxiliary cutouts are provided on the surface of the auxiliary runner.

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