CN207222860U - A kind of sand seat lower die of ZM bearing blocks - Google Patents

Abstract

The utility model proposes a kind of sand seat lower die of ZM bearing blocks, including：Include cavity on sand seat mould, being set in the downside of sand seat lower die there are five to penetrate Sha Kou, wherein penetrate the sand mouth point diameter and rear end diameter ratio positioned at middle part are 1:1.2‑1：Between 1.5, air discharge duct is both provided with other three sides of sand seat lower die, the cavity identical with the base shape of bearing block is formed after sand seat mold clamping.Its advantage is：The bearing block that the utility model can make to cast out, which is machined, to be reduced, and is saved material and artificial cost, is easily realized automated production.

Description

A kind of sand seat lower die of ZM bearing blocks

Technical field

Core shooter frock field is the utility model is related to, particularly relates to a kind of sand seat lower die of ZM bearing blocks.

Background technology

At present, China's casting industry generally manufactures sand core using hot box.Its manufacturing process approximately as：Casting is used The sand material that sand, thermosetting resin and catalyst are mixed into is injected into the core box with heating unit by core shooter, is heated to 250 to 320 degrees Celsius, the sand material close to box surface is set to be heated, the binding agent in sand material in a short period of time can polycondensation Hardening, and then form core.Foundry sand is generally injected in the cavity of hot core box mould by sand shooting mouth.

In existing machinery industry, bearing block it is widely used, in the design and production process of bearing block core mould In, since the volume of some bearing blocks is larger, for such core box in design, the depth of cavity is also bigger, so needing corresponding Increase the height of cast gate, and the position of running channel and penetrate that the influence that the structure of sand mouth casts the later stage is very big, and unreasonable sets Put and easily lead to casting rejection rate increase；In the application of bearing block, the fuse being used cooperatively with bearing block is had, due to core Minor structure is more complicated, and easily snaps off or crush after fuse coremaking.

Utility model content

The utility model is existing to solve the problems, such as, proposes a kind of sand seat lower die of ZM bearing blocks.

What the technical solution of the utility model was realized in：

A kind of sand seat lower die of ZM bearing blocks, core mould includes sand seat upper mold and sand seat lower die, under sand seat lower die Side, which is set, has five to penetrate Sha Kou, is both provided with air discharge duct in other three sides of sand seat lower die, formed after sand seat mold clamping with The identical cavity of the base shape of bearing block, sets the running channel of double cast gate in the middle part of the cavity of sand seat upper mold, and running channel pours for triple channel Road, is provided with some location holes in sand seat upper mold and sand seat lower die, is equipped with the cavity bottom of sand seat upper mold and sand seat lower die Centre hole, the air discharge duct of sand seat lower die are communicated with cavity, are penetrated Sha Kou front ends and are connected with sand shooting mouth, are penetrated Sha Kou rear ends and are connected with cavity Connect, penetrate sand mouth point diameter to a diameter of gradually increase in Sha Kou rear ends is penetrated, below the cavity of sand seat upper mold and sand seat upper mold One group of bottoming hole is set, electrically heated rod is inserted at bottoming hole, sand is additionally provided with and penetrates at the rear portion of sand seat upper mold and sand lid lower die Machine coordinates the frock hole of installation.

The beneficial effects of the utility model are：

1. the utility model can realize efficient casting, the diameter for penetrating sand mouth gradually increases, and improves the speed for penetrating sand, carries High qualified casting, the adjustment of running channel position can accelerate the speed poured, increase yield rate；

Reduced 2. the bearing block that the utility model can make to cast out is machined, save material and artificial cost, Yi Shi Existing automated production.

Brief description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, other attached drawings can also be obtained according to these attached drawings.

Fig. 1 is the front view of sand seat lower die；

Fig. 2 is the side view of sand seat lower die；

Fig. 3 is the rearview of sand seat lower die；

Fig. 4 is the front view of sand seat upper mold；

Fig. 5 is the side view of sand seat upper mold；

Fig. 6 is the rearview of sand seat upper mold.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making the creative labor All other embodiments obtained, shall fall within the protection scope of the present invention.

As shown in Fig. 1~Fig. 6, the sand seat lower die of a kind of ZM bearing blocks, core mould include sand seat upper mold 3 and sand seat lower die 4, being set in the downside of sand seat lower die 4 has five to penetrate sand mouth 6, wherein penetrating 6 point diameter of sand mouth with after positioned at middle part It is 1 to hold diameter ratio:1.2-1：Between 1.5, air discharge duct 5 is both provided with other three sides of sand seat lower die 4, after sand seat mold clamping The cavity identical with the base shape of bearing block is formed, the running channel 1 of double cast gate is set in the middle part of the cavity of sand seat upper mold 3, running channel 1 is Triple channel running channel 1, is provided with some location holes 2, in sand seat upper mold 3 and sand seat lower die 4 in sand seat upper mold 3 and sand seat lower die 4 Cavity bottom be equipped with centre hole 7, the air discharge duct 5 of sand seat lower die 4 is communicated with cavity, is penetrated 6 front end of sand mouth and is connected with sand shooting mouth, is penetrated 6 rear end of sand mouth is connected with cavity, 6 point diameter of sand mouth is penetrated to a diameter of gradually increase in 6 rear end of sand mouth is penetrated, in 3 He of sand seat upper mold One group of bottoming hole 8 is respectively provided with below the cavity of sand seat upper mold 3, electrically heated rod is inserted at bottoming hole 8, in sand seat upper mold 3 and sand The rear portion of lid lower die is additionally provided with the frock hole 9 for coordinating installation with penetrating sand machine.

Steel plate is processed into sand seat mould and sand box cover die by the utility model, is processed on sand seat mould and sand box cover die The cavity that matches, penetrate sand mouth 6 and location hole 2, and penetrating sand mouth 6, diameter gradually increases from inside to outside, penetrates 6 dimensions of sand mouth, Adjusted according to the material property of precoated sand and the speed of shaking out of sand shooting mouth, positioning pin is made according to location hole 2, in cavity Bottom hole obtain centre hole 7, insertion thimble, thimble can move in centre hole 7 in the centre hole 7, and thimble can will Sand core ejection in cavity, processes one group of evenly arranged bottoming hole 8 in sand seat mould and sand box cover die, bottoming hole 8 Determined during quantity according to the size of the cavity in sand seat mould and sand box cover die, air discharge duct 5 is communicated with cavity, air discharge duct 5 Depth between 0.1-0.3, according to the size of precoated sand particle, can be adjusted in prescribed limit air discharge duct 5 depth and Quantity, it is necessary to be processed according to the erecting device on core shooter during processing tool hole 9, penetrates sand mouth 6 plus man-hour requirement considers core shooting The performance of sand shooting mouth structure and precoated sand on machine.

Sand seat mould is installed on core shooter by frock hole 9, after sand seat mold clamping, positioning pin is inserted into positioning In hole 2, fix both sand seat upper molds 3 and sand seat lower die 4, the control system of core shooter passes through information acquisition system, instruction pressure Contracting air system starts and opens sandbox and the passage of sand hopper so that proportioned precoated sand enters sand hopper and going out by sand hopper Sand mouth enters cavity, and precoated sand is compacted under pressure, and exhaust gas is discharged from air discharge duct 5, control system instruction heating system Mould is heated, and then heats the precoated sand in mould, denaturation is allowed to and cures, temperature sensor real-time detection heating-up temperature And control element is fed back to, to control the constant of heating-up temperature；After precoated sand cures, control system instructs the liquid of hydraulic system Cylinder pressure separates mould, takes out sand core, just completes the manufacturing process of the sand core of bearing block base.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model Protection domain within.

Claims (1)

1. A kind of 1. sand seat lower die of ZM bearing blocks, it is characterised in that：Include cavity on sand seat mould, set on the downside of sand seat lower die Five are put and have penetrated Sha Kou, wherein penetrate the sand mouth point diameter and rear end diameter ratio positioned at middle part are 1:1.2-1：1.5 it Between, air discharge duct is both provided with other three sides of sand seat lower die, is formed after sand seat mold clamping identical with the base shape of bearing block Cavity, be additionally provided with some location holes in sand seat lower die, centre hole be equipped with the cavity bottom of sand seat lower die, sand seat lower die Air discharge duct is communicated with cavity, is penetrated Sha Kou front ends and is connected with sand shooting mouth, is penetrated Sha Kou rear ends and is connected with cavity, is penetrated sand mouth point diameter and is arrived The a diameter of gradually increase in Sha Kou rear ends is penetrated, one group of bottoming hole is respectively provided with below the cavity of sand seat lower die, electricity is inserted at bottoming hole Heating rod, the frock hole for coordinating installation with penetrating sand machine is additionally provided with the rear portion of sand seat lower die, and the depth of the air discharge duct exists Between 0.1mm-0.3mm, according to the size of precoated sand particle, the depth and quantity of the air discharge duct can be adjusted suitably.