CN101386056A - Tire retreading casting molding method - Google Patents

Abstract

The invention discloses a method for casting molding of a retreaded tire. The method is used for batch production of the casting molding of blade casting moulds of CPP adjustable pitch propellers. The method is characterized by comprising the steps of regulating a sand box, casting a pressure face of the propeller, casting a suction surface of the propeller, manufacturing a propeller back tire mould and a propeller face tire mould, respectively pounding moulds to manufacture the required sand moulds of the suction surface and the pressure surface, combining and assembling the moulds after shaping, cleaning and painting the moulds, then placing a casting head, welding, fixing, and baking and pouring preparation. The whole process can be completed by only a pitch gauge, a section template and a longitudinal template, which replaces working by a large wooden pattern, simplifies the processes, improves the work efficiency, reduces the cost and ensures the quality, thus the method is worthy to be popularized in the industry.

Description

Tire retreading casting molding method

Technical field

The present invention relates to casting method, relate in particular to the casting and molding of the CPP tuning for Controllable Pitch Propeller blade that is applicable to batch process.

Background technology

At present, traditional CPP tuning for Controllable Pitch Propeller blade formative method is: at first make the wooden model full pattern of CPP tuning for Controllable Pitch Propeller blade, on the square sandbox wooden model full pattern is being fixed on the thick stick then, and pound reality and trim the edge mold thickness of blade bottom back-up sand, placement positioning case awl blows CO ₂Sclerosis, then swabbing, spread parting compound, place the top box net, case number (CN) is beaten in pound top box sand and sclerosis on flask joint.The wooden model of having unpacked is made running channel, repaiies type, swabbing, after the verification mould assembling fastening, the case of pounding seam is placed cup and rising head sandbox and is treated baking type, cast, so far finishes moulding.By aforesaid operations as seen, this formative method is because the cycle of making wooden model full pattern is long, cost is high, and particularly macrophyll veneer moding shape is big, and being shifted easily when pounding case causes the casting dimension deviation, so this method wastes time and energy, cost height and casting quality can not get guaranteeing.

Summary of the invention

The objective of the invention is to overcome the defective of current technology method, propose a kind of have reasonable in design, simple and easy to do, save cost and reliable quality tyre retreading formative method.

Technical solution of the present invention is achieved in that

A kind of tire retreading casting molding method is characterized in that comprising the steps:

1.1 adjustment sandbox:

1.1.1 on the sandbox of adjusting the flange wooden model is being fastened on the thick stick, the plane of flange wooden model is flushed with the semicircle opening of square sandbox;

1.1.2 the datum mark of screw pitch gauge is positioned at the central spot of flange wooden model, and carries out position checking to model with central longitudinal;

1.1.3 reserve the running gate system space, the upper and lower case mold thickness of make suring is average as far as possible;

1.2 make blade pressure surface:

1.2.1 after determining datum mark, adopt screw pitch gauge, section template, vertical model, begin to make blade pressure surface from inside to outside with water-glass sand, and reserve the position of placement positioning case awl;

1.2.2 blow CO ₂After the sclerosis with pressure face reconditioning fairing, with the section template blade profile profile that draws, the center line that marks " X " mark and whole blade profile in center and 20 ° of positions of 0.9R lagging edge of 0.4R, 0.7R;

1.2.3 verification pressure face measured value, paint coating;

1.3 make blade suction surface:

1.3.1 section template is placed on the pressure face, utilizes screw pitch gauge to begin to make the vane thickness sand mold from inside to outside with water-glass sand;

1.3.2 blow CO ₂The reconditioning fairing of sclerosis back is suction surface;

1.3.3 verification suction surface measured value, paint coating;

1.4 system blade back loose tool:

1.4.1 unload screw pitch gauge and flange wooden model, with the above-mentioned sandbox horizontal positioned of having made blade profile, the flange wooden model resets, placement positioning case awl is done running channel;

1.4.2 the floating sand of cleaning sprinkles parting compound, is the blade back loose tool;

1.5 produce required suction surface sand mold with the above-mentioned blade back loose tool case of pounding;

1.6 system blade face loose tool:

1.6.1 remove the vane thickness sand mold on the above-mentioned blade back loose tool;

1.6.2, do running gate system with circle root model finishing Ye Yuangen;

The case 1.6.3 pound on this basis;

1.6.4 blow CO ₂Sclerosis, the back of unpacking is marked " X " mark of 20 ° of the center of 0.4R, 0.7R and 0.9R lagging edges and the center line of whole blade profile at top box by trace, is the blade face loose tool;

1.7 produce required pressure face sand mold with the above-mentioned blade face loose tool case of pounding;

1.8 mould assembling:

1.8.1 place sprue pipe, suspension ring sand mo(u)ld, described pressure face sand mold and suction surface sand mold repaiied type, cleaning, paint coating preparation mould assembling;

1.8.2 with rising head aluminum dipping form and circle sandbox by the process rising head of pounding;

1.8.3 upper and lower case mould assembling is fastening, cup and rising head sandbox are placed in the combination back, and firm welding is treated baking type, cast.

Described vane thickness sand mold is a CPP tuning for Controllable Pitch Propeller blade apperance.

Compared with prior art, advantage of the present invention mainly shows: reasonable in design, method is easy, moulding is rapid, save cost and reliable in quality.

Description of drawings

Fig. 1 is a suction surface sandbox front view of the present invention;

Fig. 2 is a pressure face sandbox front view of the present invention;

Fig. 3 is the artwork that mould assembling moulding of the present invention finishes;

Fig. 4 is a process chart of the present invention.

In the drawings: 1, square sandbox, 2, the flange wooden model, 3, the axle thick stick, 4, screw pitch gauge, 5, location case awl, 6, suction surface sand mold, 7, running gate system, 8, the pressure face mark, 9, the suspension ring sand mo(u)ld, 10, pressure face sand mold, 11, die cavity, 12, cup, 13, the rising head sandbox.

The specific embodiment

As Fig. 1～a kind of tire retreading casting molding method shown in Figure 4.Its technical process is included on the square sandbox of adjusting the plane of flange wooden model is concordant with the semicircle opening of square sandbox.The datum mark of screw pitch gauge is positioned at the central spot of flange wooden model, and checks to model with central longitudinal.Maximum, minimum of a value and wide, the narrowest cross section (using section template) of measured value surveyed in examination, and the running gate system space of reserving, and makes upper and lower case mold thickness average as far as possible.

After determining datum mark, begin to make the pressure face (adopting screw pitch gauge, section template, vertical model) of blade from inside to outside, and reserve the position of placement positioning case awl with water-glass sand.Blow CO ₂Reconditioning fairing pressure face in sclerosis back is with the section template leaf profile that draws, at center and 20 ° of center lines that mark " X " mark and whole blade profile of 0.9R lagging edge of 0.4R, 0.7R.

Verification pressure face measured value, paint coating.

Section template is placed on the pressure face, begins to make the thickness sand mold (using screw pitch gauge) of blade from inside to outside with water-glass sand, in fact this vane thickness sand mold is exactly CPP tuning for Controllable Pitch Propeller blade apperance, blows CO then ₂The reconditioning fairing of sclerosis back.

Verification suction surface measured value, paint coating.

Unload screw pitch gauge and flange wooden model, will make the sandbox horizontal positioned of blade profile, the flange wooden model resets, and placement positioning case awl is done running channel.The floating sand of cleaning sprinkles parting compound, is the blade back loose tool.Produce required suction surface sand mold with the blade back loose tool case of pounding.

Remove the vane thickness sand mold, with circle root model finishing Ye Yuangen, make running gate system, the case of pounding on this basis blows CO ₂Sclerosis, the back of unpacking is marked " X " mark and the whole leaf center line of 20 ° of the center of 0.4R, 0.7R and 0.9R lagging edges at top box by trace, is the blade face loose tool.Produce required pressure face sand mold (noting placement positioning case awl and zoned pressure face mark) with the blade face loose tool case of pounding.

Place sprue pipe, suspension ring sand mo(u)ld, pressure face sand mold and suction surface sand mold are repaiied type, cleaning, paint coating preparation mould assembling.

With rising head aluminum dipping form and circle sandbox by the process rising head of pounding.

Cup and rising head sandbox are placed in upper and lower case mould assembling, fastening, combination back, and firm welding is treated baking type, cast.So far finish the tire retreading casting molding technical process.

Claims (2)

1, a kind of tire retreading casting molding method is characterized in that comprising the steps:

1.1 adjustment sandbox:

1.1.1 on the sandbox of adjusting the flange wooden model is being fastened on the thick stick, the plane of flange wooden model is flushed with the semicircle opening of square sandbox;

1.1.2 the datum mark of screw pitch gauge is positioned at the central spot of flange wooden model, and carries out position checking to model with central longitudinal;

1.1.3 reserve the running gate system space, the upper and lower case mold thickness of make suring is average as far as possible;

1.2 make blade pressure surface:

1.2.1 after determining datum mark, adopt screw pitch gauge, section template, vertical model, begin to make blade pressure surface from inside to outside with water-glass sand, and reserve the position of placement positioning case awl;

1.2.2 blow CO ₂After the sclerosis with pressure face reconditioning fairing, with the section template blade profile profile that draws, the center line that marks " X " mark and whole blade profile in center and 20 ° of positions of 0.9R lagging edge of 0.4R, 0.7R;

1.2.3 verification pressure face measured value, paint coating;

1.3 make blade suction surface:

1.3.1 section template is placed on the pressure face, utilizes screw pitch gauge to begin to make the vane thickness sand mold from inside to outside with water-glass sand;

1.3.2 blow CO ₂The reconditioning fairing of sclerosis back is suction surface;

1.3.3 verification suction surface measured value, paint coating;

1.4 system blade back loose tool:

1.4.1 unload screw pitch gauge and flange wooden model, with the above-mentioned sandbox horizontal positioned of having made blade profile, the flange wooden model resets, placement positioning case awl is done running channel;

1.4.2 the floating sand of cleaning sprinkles parting compound, is the blade back loose tool;

1.5 produce required suction surface sand mold with the above-mentioned blade back loose tool case of pounding;

1.6 system blade face loose tool:

1.6.1 remove the vane thickness sand mold on the above-mentioned blade back loose tool;

1.6.2, do running gate system with circle root model finishing Ye Yuangen;

The case 1.6.3 pound on this basis;

1.6.4 blow CO ₂The sclerosis back of unpacking is marked " X " mark of 20 ° of the center of 0.4R, 0.7R and 0.9R lagging edges and the center line of whole blade profile at top box by trace, is the blade face loose tool;

1.7 produce required pressure face sand mold with the above-mentioned blade face loose tool case of pounding;

1.8 mould assembling:

1.8.1 place sprue pipe, suspension ring sand mo(u)ld, described pressure face sand mold and suction surface sand mold repaiied type, cleaning, paint coating preparation mould assembling;

1.8.2 with rising head aluminum dipping form and circle sandbox by the process rising head of pounding;

1.8.3 upper and lower case mould assembling is fastening, cup and rising head sandbox are placed in the combination back, and firm welding is treated baking type, cast.

2, tire retreading casting molding method according to claim 1 is characterized in that described vane thickness sand mold is a CPP tuning for Controllable Pitch Propeller blade apperance.

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