CN216828511U - Simple and easy sand mould location is with mould structure from top to bottom - Google Patents

Abstract

The utility model provides a simple die structure for positioning an upper sand mould and a lower sand mould, which comprises a first die plate and a second die plate, wherein a plane boss is arranged in the center of a forming surface of the first die plate, a first sub-pattern is arranged in the center of the plane boss, a plane groove is arranged in the center of the forming surface of the second die plate, a second sub-pattern is arranged in the center of the plane groove, the plane boss and the plane groove are matched and butted with each other, the shape of the plane boss and the shape of the plane groove are both squares with positioning angles, and the first sub-pattern and the second sub-pattern jointly form a molding pattern. The simple upper and lower sand mold positioning mold structure has the advantages of being simple to operate, high in positioning accuracy, low in positioning cost and long in service life.

Description

Simple and easy sand mould location is with mould structure from top to bottom

Technical Field

The utility model relates to the field of casting production, in particular to a simple die structure for positioning an upper sand mould and a lower sand mould.

Background

The molding is a necessary link of casting production, generally, mutually matched sand molds are manufactured in an upper sand box and a lower sand box, the sand molds are combined together, the castings are cast by the sand molds, if the upper sand box and the lower sand box are not orderly and are not accurately aligned when the sand boxes are combined, a series of quality problems such as fire running, box staggering, casting mold deformation, sand core movement and the like can occur in a later process, and therefore the sand boxes need to be positioned. The common positioning mode and the positioning device of sand casting at present mainly have: (1) the metal/plastic positioning pins and the positioning holes are pre-buried in the sand mould, or the metal/plastic positioning pins and the positioning holes are directly cast on the sand mould, because of the problem of fit clearance, each pin and each pin sleeve must be used singly in a set, and need to be respectively marked or respectively numbered so as to avoid confusion, and need to be put on a sand box during molding and taken off during box assembling, the action is frequent, the operation is troublesome, the production cost of the metal positioning pins is higher, and the service life of the plastic positioning pins is short; (2) the corresponding points or lines are drawn on the outer walls of the upper sand box and the lower sand box according to the positioning center of the model during molding to serve as reference positions during box closing, the positioning method has no cost and is simple and convenient to operate, but the positioning precision is poor, the possibility of box staggering from top to bottom is high, and the problems of large fash thickness, displacement of a casting mold and the like are easy to occur; (3) the guide post positioning of an automatic production line and the guide rail positioning in V-method modeling are adopted, but the guide post positioning and the guide rail positioning are often matched with equipment in a complete set for use, and although the precision is high, the additional manufacturing cost is high.

In order to solve the above problems, people always seek an ideal technical solution.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a simple die structure for positioning an upper sand mould and a lower sand mould, which is simple to operate, high in positioning accuracy, low in positioning cost and long in service life.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a sand mould location uses mould structure about simple and easy, includes first template and second template, the profile center of first template is provided with the plane boss, plane boss center is provided with first minute pattern, the profile center of second template is provided with the plane recess, plane recess center is provided with the second and divides the pattern, the plane boss with the plane recess is mutually supported the butt joint and is set up, plane boss shape with plane recess shape is the square that is equipped with the angle of location, first minute pattern with the second divides the pattern to constitute the molding pattern jointly.

Based on the above, the fit clearance of the plane boss and the plane groove is not more than 2 mm.

Based on the above, the first template and the second template are both made of wood plates.

Based on the above, the length and width of the parting surface of the modeling mold sample is not more than 2500mm, the height of the plane boss and the depth of the plane groove are 20-30mm, and the single-side drawing slope is 10-15 degrees.

Based on the above, the four corners of the first template and the four corners of the second template are provided with sizing angle steels.

Compared with the prior art, the utility model has substantive characteristics and progress, and particularly, the utility model can respectively press needed sand molds in the upper sand box and the lower sand box by utilizing the first template and the second template, wherein the first sub-pattern and the second sub-pattern are used for pressing out the sand molds needed by castings, the plane boss is used for pressing out the positioning groove at the periphery of the sand mold, the plane groove is used for pressing out the positioning boss at the periphery of the sand mold, and the positioning mechanism similar to a 'spigot' is formed by utilizing the positioning angle, so that the upper sand box and the lower sand box can be accurately aligned when being closed.

Furthermore, the fit clearance is set to be less than 2mm, and the positioning precision can be equivalent to that of a metal positioning pin and is superior to that of a plastic positioning pin through practice; the first template and the second template are both made of wood plates, so that the processing is convenient, and the cost is low; the height of the plane boss and the depth of the plane groove are matched with the single-side draft angle, so that the sand box can be conveniently opened after casting is finished; the design angle steel sets up in the four corners, can play certain inhibitory action to the deformation of wooden board on the one hand, and on the other hand prevents that bight from colliding with in the use to further increase of service life.

Drawings

Fig. 1 is a schematic structural view of a first template in embodiment 1.

Fig. 2 is a schematic structural view of a second template in embodiment 1.

Fig. 3 is a schematic structural view of the first template in embodiment 2.

Fig. 4 is a schematic structural view of a second template in embodiment 2.

In the figure: 1. a first template; 2. a second template; 3. a planar boss; 4. a first split pattern; 5. a planar groove; 6. a second sub-pattern; 7. positioning an angle; 8. and (5) shaping the angle steel.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Example 1

As shown in fig. 1 and 2, a simple and easy mould structure for sand mould positioning from top to bottom comprises a first template 1 and a second template 2, a plane boss 3 is arranged in the center of the forming surface of the first template 1, a first sub-pattern 4 is arranged in the center of the plane boss 3, a plane groove 5 is arranged in the center of the forming surface of the second template 2, a second sub-pattern 6 is arranged in the center of the plane groove 5, the plane boss 3 and the plane groove 5 are matched with each other and are arranged in a butt joint mode, the shape of the plane boss 3 and the shape of the plane groove 5 are both squares with positioning angles 7, and the first sub-pattern 4 and the second sub-pattern 6 jointly form a moulding pattern.

When the mould pressing device is used specifically, the first template 1 and the second template 2 are used for pressing needed sand moulds in the upper sand box and the lower sand box respectively, wherein the first sub-pattern 4 and the second sub-pattern 6 are used for pressing out the sand mould needed by a casting, the plane boss 3 can be used for pressing out a positioning groove on the periphery of the sand mould, the plane groove 5 can be used for pressing out a positioning boss on the periphery of the sand mould, and a positioning mechanism similar to a spigot is formed by using a positioning angle 7, so that accurate alignment of the upper sand box and the lower sand box during mould assembling is ensured.

In order to improve the positioning accuracy, the fit clearance between the plane boss 3 and the plane groove 5 is not more than 2mm, and the positioning accuracy can be equivalent to that of a metal positioning pin and is superior to that of a plastic positioning pin through practice.

The first template 1 and the second template 2 are both made of wood plates, so that the drawing is convenient, when the length and width of the parting surface of the modeling pattern is not more than 2500mm, the height of the plane boss 3 and the depth of the plane groove 5 are 20-30mm, and the single-side drawing inclination is 10-15 degrees; when the length and width of the parting surface of the modeling pattern is larger than 2500mm, the height of the plane boss 3, the depth of the plane groove 5 and the single-side draft angle can be properly increased.

Example 2

As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that four corners of the first formwork 1 and four corners of the second formwork 2 are provided with sizing angle irons 8; the fixed mode can adopt the long screw, and during the use, design angle steel 8 can play certain inhibitory action to the deformation of wooden board on the one hand, and on the other hand prevents that bight from colliding with in the use to further increase of service life.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications of the embodiments of the utility model or equivalent substitutions for parts of the technical features are possible; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims (5)

1. The utility model provides a sand mould location is with mould structure about simple and easy, its characterized in that: including first template and second template, the profiled surface central authorities of first template are provided with the plane boss, plane boss central authorities are provided with first minute pattern, the profiled surface central authorities of second template are provided with the plane recess, plane recess central authorities are provided with the second and divide the pattern, the plane boss with the butt joint setting is mutually supported to the plane recess, plane boss shape with the plane recess shape is the square that is equipped with the angle of orientation, first minute pattern with the second divides the pattern to constitute the molding pattern jointly.

2. The mold structure for positioning the simple upper and lower sand molds according to claim 1, wherein: the fit clearance between the plane boss and the plane groove is not more than 2 mm.

3. The simple upper and lower sand mold positioning die structure according to claim 2, characterized in that: the first template and the second template are both made of wood plates.

4. The simple upper and lower sand mold positioning die structure according to claim 3, characterized in that: the length and width of the parting surface of the modeling pattern is not more than 2500mm, the height of the plane boss and the depth of the plane groove are 20-30mm, and the single-side drawing slope is 10-15 degrees.

5. The mold structure for positioning the simple upper and lower sand molds according to claim 3 or 4, wherein: and the four corners of the first template and the four corners of the second template are provided with sizing angle steels.

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