Mold rod for wax mold casting

Abstract

The utility model relates to the technical field of wax mould casting, in particular to a mould rod for wax mould casting, which comprises a metal framework, the metal framework comprises an operating handle and a core rod, a plastic rod is coated outside the core rod, the operating handle is provided with a hanging nail which transversely penetrates through the operating handle, and the operating handle is provided with a plastic rod. The core rod and the plastic rod are provided with at least one pin penetrating through the core rod and the plastic rod; the plastic rod comprises a rod handle connected with the operation handle, at least two sections of rod bodies and a rod head, clamping grooves are formed in the rod bodies, and annular grooves are formed in the connecting position of the rod bodies and the connecting position of the rod bodies and the rod head. The mold rod is simple in structure, convenient to use, capable of being well connected with the wax mold in a fusion mode, stable in mechanical performance, high in strength, convenient to clean and high in reuse efficiency, and wax mold damage caused by the mold rod is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of wax pattern casting, in particular to a mold rod used for wax pattern casting. Background Art

[0002] Wax casting usually includes the following processes: injecting wax mold, repairing wax tree, dipping slurry and hanging sand, baking shell and casting and cleaning sand. Dipping slurry and hanging sand requires operation of the wax mold. The material of the wax mold is easy to break and is not convenient to hold, so a mold rod needs to be melted into the wax mold when injecting the wax mold.

[0003] From the functions that the mold rod needs to undertake, it can be known that the mold rod used for the wax model needs to be able to be well integrated with the wax model, the adhesion between the two should be good, there should be no gap, and the mold rod requires a stable structure, a certain strength, and not easy to deform. In existing production, metal rods or bent metal wires are usually used as mold rods. On the one hand, the wax material of the metal and the wax model is quite different, and the two cannot be well integrated. For some larger workpieces, the wax model often separates from the mold rod due to its own weight during production on the production line, and even the wax model breaks and falls, causing waste; on the other hand, using metal rods or bent metal wires as mold rods is not rigid enough. When the wax model is dipped in slurry and sanded, it needs to be turned over or even kept horizontally. The mold rod will be deformed due to the weight of the wax model + sand shell, which will cause the wax model to break. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to provide a mold rod for wax model casting, which uses a metal rod as an inner frame and is covered with plastic that is easily fused to the wax model. It has a stable structure, can be reused for a long time, and greatly reduces the risk of wax model breakage.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a mold rod for wax mold casting, including a metal skeleton, the metal skeleton includes an operating handle and a core rod, the core rod is covered with a plastic rod, the operating handle is provided with a hanging nail that penetrates the operating handle horizontally, and the core rod and the plastic rod are provided with at least one pin that penetrates the two; the plastic rod includes a rod handle connected to the operating handle, at least two sections of rod body, and a rod head, the rod body is provided with a clamping groove, and the connection between the rod body and the rod body and the connection between the rod body and the rod head are both provided with annular grooves.

[0006] Preferably, the operating handle is a cylinder, and the cross-section of the core rod is circular or polygonal.

[0007] Preferably, the plastic rod is made of ABS plastic.

[0008] Preferably, the surface of the handle is provided with at least three grooves.

[0009] Preferably, the cross-sections of the rod body and the rod head are circular, and the diameters of both are smaller than the rod handle.

[0010] Preferably, the slot transversely penetrates the outer circumference of the rod body.

[0011] Preferably, the cross section of the annular groove is a right triangle, wherein one right-angled side is perpendicular to the axis of the plastic rod and is located on the connecting surface of two sections of the rod body or the rod body and the rod head, and the hypotenuse is located on the surface of the rod body.

[0012] The beneficial effects of the utility model are as follows: a mold rod for wax model casting, comprising a metal frame, the metal frame comprising an operating handle and a core rod, the core rod is coated with a plastic rod, the operating handle is provided with a hanging nail that passes through the operating handle horizontally, the core rod and the plastic rod are provided with at least one pin that passes through the two; the plastic rod comprises a rod handle connected to the operating handle, at least two sections of rod body, and a rod head, the rod body is provided with a card slot, and the connection between the rod body and the rod body, and the connection between the rod body and the rod head are all provided with annular grooves. The mold rod of the utility model has a simple structure, is easy to use, can be well integrated with the wax model, and has stable mechanical properties and high strength, eliminates the damage to the wax model caused by the mold rod, and the mold rod is easy to clean and has high reuse efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereoscopic diagram of a mold rod for wax mold casting of the utility model;

[0014] Figure 2 The utility model is a main sectional view of a mold rod used for wax mold casting.

[0015] Description of reference numerals:

[0016] 1——metal frame, 11——operating handle, 12——core rod, 2——plastic rod, 21——rod handle, 22——rod body, 23——rod head, 24——slot, 25——ring groove, 3——hanging nail, 4——pin. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0018] like Figure 1 , 2As shown, a mold rod for wax mold casting in this embodiment includes a metal skeleton 1, wherein the metal skeleton 1 includes an operating handle 11 and a core rod 12, wherein the core rod 12 is coated with a plastic rod 2, wherein the operating handle 11 is provided with a hanging nail 3 which passes through the operating handle 11 transversely, and the core rod 12 and the plastic rod 2 are provided with at least one pin 4 which passes through the two; the plastic rod 2 includes a rod handle 21 connected to the operating handle 11, at least two sections of a rod body 22, and a rod head 23, wherein the rod body 22 is provided with a card groove 24, and an annular groove 25 is provided at the connection between the rod body 22 and the rod body 22, and at the connection between the rod body 22 and the rod head 23.

[0019] This embodiment discloses a mold rod with a simple structure that can be used for most wax mold making. The metal skeleton 1 provides the strength of the mold rod, wherein the operating handle 11 is used for workers to operate by hand, and the hanging nail 3 is hung with the clamping unit of the production line, so the operating handle 11 is usually blocked by the clamping unit and is not easily contaminated by mortar. The core rod 12 basically runs through the entire plastic rod 2, and ABS plastic can be solidified on the surface of the core rod 12 through the mold during manufacturing.

[0020] When making a wax model, the wax model is mainly fused with the rod head 23 and the rod body 22, and the rod handle 21 is usually left empty for a long section, thereby lengthening the distance between the wax model and the operating handle 11, thereby reducing the contamination of the clamping unit when dipping and sanding; in order to increase the fusion strength and lifting strength between the plastic rod 2 and the wax model, the rod body 22 can be provided with various groove structures or protrusion structures. In this embodiment, the card groove 24 is provided which passes through the rod body 22 horizontally. In addition, the rod body 22 is also provided with the annular groove 25 to further enhance the fusion effect with the wax model.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, and for the convenience of describing the technical solution, the front, rear, left, right, top, middle, and bottom directions adopted are based on the settings in the accompanying drawings, rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A mold rod for wax casting, characterized in that: The invention comprises a metal frame, wherein the metal frame comprises an operating handle and a core rod, the core rod is coated with a plastic rod, the operating handle is provided with a hanging nail which penetrates the operating handle transversely, and the core rod and the plastic rod are provided with at least one pin which penetrates both; the plastic rod comprises a rod handle connected with the operating handle, at least two sections of rod body, and a rod head, the rod body is provided with a card slot, and the connection between the rod body and the rod body and the connection between the rod body and the rod head are both provided with annular grooves.

2. A mold rod for wax casting according to claim 1, characterized in that: The operating handle is a cylinder, and the cross section of the core rod is circular or polygonal.

3. A mold rod for wax casting according to claim 1, characterized in that: The material of the plastic rod is ABS plastic.

4. A mold rod for wax casting according to claim 1, characterized in that: The surface of the handle is provided with at least three grooves.

5. A mold rod for wax casting according to claim 1, characterized in that: The cross sections of the rod body and the rod head are circular, and the diameters of both are smaller than the rod handle.

6. A mold rod for wax casting according to claim 1, characterized in that: The clamping groove passes through the outer circumference of the rod body transversely.

7. A mold rod for wax casting according to claim 1, characterized in that: The cross section of the annular groove is a right triangle, one of which is perpendicular to the axis of the plastic rod and is located on the connecting surface of two sections of the rod body or the rod body and the rod head, and the hypotenuse is located on the surface of the rod body.

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