CN105382195A

CN105382195A - Longitudinal symmetry casting construction method for saving wood mold

Info

Publication number: CN105382195A
Application number: CN201510802677.1A
Authority: CN
Inventors: 郑建斌; 陈忠振; 陈忠霆
Original assignee: FUJIAN XINGHANG MECHANICAL CASTING Co Ltd
Current assignee: Fujian Xinghang Heavy Industry Co.,Ltd.
Priority date: 2015-11-19
Filing date: 2015-11-19
Publication date: 2016-03-09
Anticipated expiration: 2035-11-19
Also published as: CN105382195B

Abstract

The invention relates to a longitudinal symmetry casting construction method for saving a wood mold. The longitudinal symmetry casting construction method includes the following steps: (1) the wood mold consistent with a casting in half-and-half shape is manufactured; (2) a lower sand mold consistent with the wood mold in shape is molded in molding sand of a lower sanding box; (3) a reinforcing steel bar is erected at an opening of the lower sand mold and is aligned at the upper surface of the molding sand in the lower sanding box; (4) the wood mold is placed on the reinforcing steel bar, and the edge of the lower side face of the wood mold coincides with the side edge of the opening of the lower sand mold; (5) an upper sanding box is installed on the lower sanding box, a cavity is poured to the upper sanding box and compacted, and the rest of the molding sand is scraped away; (6) the upper sanding box is opened, the wood mold and the reinforcing steel bar are taken out, and an upper sand mold consistent with the wood mold in shape is molded in the molding sand of the upper sanding box; (7) the upper sanding box is closed again, and molten iron is poured into the sand mold; and (8) the casting is taken out after natural cooling is carried out. By means of the longitudinal symmetry casting construction method, materials consumed for manufacturing the wood mold are greatly saved, and the wood mold manufacturing process is simplified.

Description

Upper and lower symmetrical castings saves the construction method of wooden model

Technical field

The present invention relates to the construction method that a kind of upper and lower symmetrical castings saves wooden model.

Background technology

At present, when casting symmetrical castings, need first to manufacture a wooden model the same with cast shape, use for the manufacture of sand mold mould, when casting structure is comparatively complicated, manufacturing wooden model needs to expend very large manpower and materials, and when casting different foundry goods, all need again to manufacture wooden model and sand mold mould, cause expending of timber larger.

Summary of the invention

In view of this, the object of this invention is to provide the construction method that a kind of upper and lower symmetrical castings saves wooden model, greatly can reduce consumptive material when manufacturing wooden model, simplify wooden model manufacturing process.

The present invention adopts following scheme to realize: a kind of upper and lower symmetrical castings saves the construction method of wooden model, carries out according to the following steps: (1) manufactures the wooden model consistent with double shape of foundry goods; (2) wooden model is placed on base plate, and on base plate, lays the drag box being positioned at wooden model periphery; (3) in drag box, pour molding sand into and after compacting, scrape off unnecessary molding sand; (4) drag box is spun upside down; (5) take out wooden model, just in the molding sand of drag box, mold the lower sand mold consistent with wooden model shape; (6) set up reinforcing bar at the opening part of lower sand mold, reinforcing bar is concordant with the molding sand upper surface in drag box; (7) wooden model is placed on reinforcing bar, and edge, wooden model downside and lower sand mold opening edge are along matching; (8) on drag box, install sandbox, and on cope, pour molding sand into and after compacting, scrape off unnecessary molding sand; (9) open cope, take out wooden model and reinforcing bar, in the molding sand of cope, mold the upper sand mold consistent with wooden model shape; (10) close sandbox again, pouring molten iron in sand mold; (11), after naturally cooling, foundry goods is taken out.

Further, in step (8), before installing sandbox, need to spill tap sand at the molding sand upper surface of drag box, and blow off the tap sand being sprinkled upon wooden model surface.

Further, in step (2) and step (7), when placing wooden model, face down corresponding with the foundry goods plane of symmetry of wooden model.

Further, in step (10), when taking out reinforcing bar, fill and lead up when reinforcing bar is set up at the indent of lower sand mold opening edge along formation.

Further, in step (8), need first to lay gate stick before pouring molding sand into, gate stick lower end needs contact wooden model upper surface.

Compared with prior art, the present invention has following beneficial effect: construction method use and foundry goods double equiform wooden model that the upper and lower symmetrical castings of the present invention saves wooden model just can produce the sand mold the same with whole cast shape, greatly save wooden model material, also simplify wooden model manufacturing process simultaneously.

For making object of the present invention, technical scheme and advantage clearly understand, below by specific embodiment and relevant drawings, the present invention will be described in further detail.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention foundry goods organigram;

Fig. 2 is wooden model organigram in the embodiment of the present invention;

Fig. 3 is embodiment of the present invention step (3) schematic diagram;

Fig. 4 is embodiment of the present invention step (7) schematic diagram;

Fig. 5 is embodiment of the present invention step (8) schematic diagram;

Number in the figure illustrates: sand mold, the upper sand mold of 9-under 1-foundry goods, 2-wooden model, 3-base plate, 4-drag box, 5-reinforcing bar, 6-cope, 7-gate stick, 8-.

Detailed description of the invention

As shown in Fig. 1 ~ 5, a kind of upper and lower symmetrical castings saves the construction method of wooden model, carries out according to the following steps: (1) manufactures the wooden model 2 consistent with double shape of foundry goods 1; (2) wooden model 2 is placed on base plate 3, and on base plate 3, lays the drag box 4 being positioned at wooden model 2 periphery; (3) in drag box 4, pour molding sand into and after compacting, scrape off unnecessary molding sand; (4) drag box 4 is spun upside down; (5) take out wooden model 2, just in the molding sand of drag box 4, mold the lower sand mold 8 consistent with wooden model shape; (6) set up reinforcing bar 5 at the opening part of lower sand mold, reinforcing bar 5 is concordant with the molding sand upper surface in drag box 4; (7) wooden model 2 is placed on reinforcing bar 5, and edge, wooden model downside and lower sand mold opening edge are along matching; (8) on drag box 4, install sandbox 6, and on cope, pour molding sand into and after compacting, scrape off unnecessary molding sand; (9) open cope 6, take out wooden model 2 and reinforcing bar 5, in the molding sand of cope, mold the upper sand mold 9 consistent with wooden model shape; (10) sandbox 6 is again set up, pouring molten iron in sand mold; (11), after naturally cooling, foundry goods is taken out.

The present invention, when casting symmetrical castings, only needs use one piece and foundry goods double equiform wooden model just can produce the sand mold (upper and lower sand mold be made up of) the same with whole cast shape, saves wooden model material, also simplify wooden model manufacturing process simultaneously.

In the present embodiment, in step (8), before installing sandbox 6, need to spill tap sand at the molding sand upper surface of drag box 4, and blow off the tap sand being sprinkled upon wooden model 2 surface.

In the present embodiment, in step (2) and step (7), when placing wooden model 2, face down corresponding with foundry goods 1 plane of symmetry of wooden model 2.

In the present embodiment, in step (10), when taking out reinforcing bar 5, filling and leading up the indent in lower sand mold opening edge edge formation when reinforcing bar 5 is set up, after preventing cast casting, producing unnecessary burr; Also indent can not be filled and led up, but the burr needing removal molten iron to enter indent after taking out foundry goods and produce.

In the present embodiment, in step (8), need first to lay gate stick 7 before pouring molding sand into, gate stick 7 lower end needs contact wooden model 2 upper surface; Extract gate stick after sand compaction in cope and just form cast gate.

In the present embodiment, in step (8), also need insertion one can form the thin bar of passage before pouring molding sand into, the air be convenient in the sand mold duration of pouring is discharged.

Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. about, symmetrical castings saves a construction method for wooden model, it is characterized in that: carry out according to the following steps: (1) manufactures the wooden model consistent with double shape of foundry goods; (2) wooden model is placed on base plate, and on base plate, lays the drag box being positioned at wooden model periphery; (3) in drag box, pour molding sand into and after compacting, scrape off unnecessary molding sand; (4) drag box is spun upside down; (5) take out wooden model, just in the molding sand of drag box, mold the lower sand mold consistent with wooden model shape; (6) set up reinforcing bar at the opening part of lower sand mold, reinforcing bar is concordant with the molding sand upper surface in drag box; (7) wooden model is placed on reinforcing bar, and edge, wooden model downside and lower sand mold opening edge are along matching; (8) on drag box, install sandbox, and on cope, pour molding sand into and after compacting, scrape off unnecessary molding sand; (9) open cope, take out wooden model and reinforcing bar, in the molding sand of cope, mold the upper sand mold consistent with wooden model shape; (10) close sandbox again, pouring molten iron in sand mold; (11), after naturally cooling, foundry goods is taken out.

2. upper and lower symmetrical castings according to claim 1 saves the construction method of wooden model, it is characterized in that: in step (8), before installing sandbox, needs to spill tap sand at the molding sand upper surface of drag box, and blow off the tap sand being sprinkled upon wooden model surface.

3. upper and lower symmetrical castings according to claim 1 saves the construction method of wooden model, it is characterized in that: in step (2) and step (7), when placement wooden model, face down corresponding with the foundry goods plane of symmetry of wooden model.

4. upper and lower symmetrical castings according to claim 1 saves the construction method of wooden model, it is characterized in that: in step (10), when taking out reinforcing bar, fills and leads up when reinforcing bar is set up at the indent of lower sand mold opening edge along formation.

5. upper and lower symmetrical castings according to claim 1 saves the construction method of wooden model, it is characterized in that: in step (8), needs first to lay gate stick before pouring molding sand into, and gate stick lower end needs contact wooden model upper surface.