CN201988682U

CN201988682U - Fixing structure for casting sand core

Info

Publication number: CN201988682U
Application number: CN2011201327277U
Authority: CN
Inventors: 黄立挺
Original assignee: Ningbo Kaili Machinery Mould Co Ltd
Current assignee: Ningbo Kaili Machinery Mould Co Ltd
Priority date: 2011-04-21
Filing date: 2011-04-21
Publication date: 2011-09-28
Anticipated expiration: 2021-04-21

Abstract

The utility model discloses a fixing structure for casting a sand core. The fixing structure comprises a core head (2) which is arranged at the bottom of a sand core (1), wherein the core head (2) is coaxial with the sand core (1); the inner wall of a sand mould (3) is provided with an inner recess (6) which is matched with the core head (2) in shape and size; and the outer wall of the core head (2) is fixedly adhered to the inner wall of the inner recess (6) through an adhesive (5). The fixing structure for casting the sand core is easy and convenient to operate and has high production efficiency; and a casting has high dimensional accuracy.

Description

The fixed structure of casting sand core

Technical field

The utility model relates to the Casting Equipment field, specifically is a kind of fixed structure of casting sand core.

Background technology

When sand casting, to accurately locate and fixing core, the fixing general screw rod that adopts of tradition core is fixed, its way is when making core, spiral shell head with screw rod is fixed in the core earlier, and sand mold and sandbox are provided with the through hole that inserts for screw rod, in the through hole of then screw rod of core being packed into, at the outside of sandbox nut connecting screw rod, thereby core is fixed in the sand mold.When the core fixed form of this structure is fixed in the core at the spiral shell head with screw rod, be difficult to screw rod is put vertically, the degree of accuracy of screw rod location is also lower, thereby influences the positioning accuracy of core; When the nut fastening screw is used in the sandbox outside,, thereby make the low core of surface accuracy of foundry goods imperfect if exert oneself the excessive bottom that will damage core; If firmly too small, core is just fixing not firm, is easy to generate and moves dislocation, thereby influence the dimensional accuracy of foundry goods; In addition, the recovery of screw rod is also relatively more difficult, nonexpondable screw rod, and the screw thread above it weares and teares easily, thereby has increased production cost; Moreover this core is operated more loaded down with trivial detailsly fixedly the time, and production efficiency is low.

The utility model content

The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provide a kind of simple to operation, production efficiency is high, and the fixed structure of the high casting sand core of the casting dimension accuracy of casting.

Technical solution of the present utility model is, a kind of fixed structure with casting sand core of following structure is provided: it comprises the core print that is arranged on the core bottom, and core print and core coaxial line, the inwall of described sand mold is provided with the indent that matches with the shape and the size of core print, and the lateral wall of described core print and the inwall of indent bonding are fixing.

After adopting above structure, the fixed structure of the utility model casting sand core compared with prior art, have the following advantages: when the fixed structure of this casting sand core makes core fixedly, only need on the sidewall of core print, to be coated with the glue bond agent of casting sand core special use, then the core print of core is put into the indent of sand mold, the glue bond agent will be solidified after about 3 minutes, thereby core is fixed on the sand mold, therefore simple to operation, the production efficiency height; When packing core into, core remains in sand mold vertically in addition, works good with other cores, is difficult for dislocation, makes the casting dimension accuracy height of casting.When the molding sand knockout, clear up also more convenient in addition.

As preferably, described core print is up big and down small round table-like core print.Because the shape of the indent in the sand mold and size match with core print, so the shape of indent also be up big and down small indent, when the dress core, can make to combine closely between core and the sand mold, be connected firmly.

As a kind of improvement, the diameter dimension of described core lower end is greater than the diameter dimension of core print upper end.Thereby make core and core print junction form step, this step, can prevent that the glue bond agent on the core print is excessive, thereby can not influence the surface size precision of foundry goods fixedly the time at core.

Description of drawings

It shown in the figure structural representation of the fixed structure of the utility model casting sand core.

As shown in the figure:

1, core, 2, core print, 3, sand mold, 4, sandbox, 5, the glue bond agent, 6, indent.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As shown in the figure, the fixed structure of the utility model casting sand core, it comprises the core print 2 that is arranged on core 1 bottom, and core print 2 and core 1 coaxial line, the inwall of the sand mold 3 in the sandbox 4 is provided with the indent 6 that matches with the shape and the size of core print 2, the inwall of the lateral wall of described core print 2 and indent 6 is fixing by glue bond agent 5 bondings, and in other words, the glue bond agent layer bonding that forms by glue bond agent 5 between the inwall of the lateral wall of described core print 2 and indent 6 is fixing.

Described glue bond agent 5 is the commercially available prod, is the glue bond agent of casting sand core special use.

Described core print 2 is up big and down small round table-like core print 2.

The diameter dimension of described core 1 lower end is greater than the diameter dimension of core print 2 upper ends.

Claims

1. the fixed structure of a casting sand core, it is characterized in that: it comprises the core print (2) that is arranged on core (1) bottom, and core print (2) and core (1) coaxial line, the inwall of sand mold (3) is provided with the indent (6) that matches with the shape and the size of core print (2), and the inwall of the lateral wall of described core print (2) and indent (6) is fixing by glue bond agent (5) bonding.

2. the fixed structure of casting sand core according to claim 1, it is characterized in that: described core print (2) is up big and down small round table-like core print (2).

3. the fixed structure of casting sand core according to claim 1 is characterized in that: the diameter dimension of described core (1) lower end is greater than the diameter dimension of core print (2) upper end.