阅读说明：本技术 大型粘土砂芯制作工艺及所需工装设备 (Large clay sand core manufacturing process and required tooling equipment ) 是由 王斌 于 2020-07-07 设计创作，主要内容包括：本发明涉及一种大型粘土砂芯制作所需工装设备,包括上芯盒,下芯盒,第一轨道、第二轨道及翻转机,上芯盒一侧表面设有凹腔、定位销孔及定位销杆,下芯盒一侧表面开设凹腔、定位销孔及定位销杆,第一轨道用于输送上芯盒、下芯盒,第二轨道用于输送垂直竖起的上芯盒,翻转机设于第一轨道与第二轨道之间。本发明涉及一种依靠上述工装设备实现的大型粘土砂芯制作工艺,本发明提供的上述大型粘土砂芯制作工艺及所需工装设备有效的解决了大型砂芯的制作难题。(The invention relates to tooling equipment required by manufacturing a large clay sand core, which comprises an upper core box, a lower core box, a first rail, a second rail and a turnover machine, wherein a concave cavity, a positioning pin hole and a positioning pin rod are arranged on one side surface of the upper core box, the concave cavity, the positioning pin hole and the positioning pin rod are arranged on one side surface of the lower core box, the first rail is used for conveying the upper core box and the lower core box, the second rail is used for conveying the vertically erected upper core box, and the turnover machine is arranged between the first rail and the second rail. The invention relates to a manufacturing process of a large clay sand core realized by means of the tooling equipment, and the manufacturing process of the large clay sand core and the required tooling equipment provided by the invention effectively solve the manufacturing problem of the large sand core.)

1. The utility model provides a required tool equipment of large-scale clay psammitolite preparation which characterized in that: the method comprises the following steps:

the sand core comprises an upper core box, wherein one side surface of the upper core box is provided with one or more concave cavities for forming sand cores, positioning pin holes and positioning pin rods;

the core box comprises a lower core box, wherein one side surface of the lower core box is provided with one or more concave cavities, positioning pin holes and positioning pin rods for forming sand cores, and two sides of the upper core box and the lower core box are respectively provided with a guide rail which is symmetrical and convex at two sides;

the first track is used for conveying the upper core box and the lower core box;

a second track for conveying the vertically erected upper core box;

the turnover machine is arranged between the first track and the second track and comprises two turnover rings, two side plates, a plurality of optical axes and a plurality of pairs of bearing sleeves for bearing an upper core box and a lower core box, wherein the two turnover rings are arranged in parallel in tandem, the turnover ring positioned on the front side is arranged close to the first track, the turnover ring positioned on the rear side is arranged close to the second track, the first left side and the second right side of the two side plates are arranged between the two turnover rings in parallel, two ends of each side plate are respectively connected and fixed with the two turnover rings, each side plate is provided with an upper row of optical axis holes and a lower row of optical axis holes, each row of optical axis holes comprises a plurality of optical axis holes which are arranged at equal intervals, two ends of each optical axis are correspondingly inserted into the two optical axis holes of the two side plates so as to form an upper row of optical axes and a lower row of optical axes which are arranged between the two side plates, each pair of bearing sleeves is arranged on one, The bearing sleeves can move along the circumferential direction of the optical axis and can also move left and right along the axial direction of the optical axis; when the overturning ring is in an initial state and does not rotate, the two side plates are parallel to the horizontal plane, the overturning ring positioned on the front side is butted with the first rail, and the upper core box and the lower core box can be directly pushed into the overturning machine along the first rail; when the turnover ring rotates 90 degrees from the initial state, the two side plates are perpendicular to the horizontal plane, the turnover ring positioned at the rear side is in butt joint with the second rail, and the upper core box can be directly pushed out of the turnover machine to enter the second rail.

2. The tooling equipment required by the manufacture of the large clay sand core according to claim 1, which is characterized in that: the upper core box and the lower core box respectively comprise a core box main body, the lower surface of the core box main body protrudes downwards to form the guide rail, the upper surface of the core box main body of the upper core box is provided with a concave cavity, the upper surface of the core box main body of the lower core box is provided with a concave cavity, the upper surfaces of the core box main bodies of the upper core box and the lower core box are provided with two positioning pin holes and two positioning pin rods at the peripheries of the concave cavity and the concave cavity, and the positioning pin rods are used for being inserted into the positioning.

3. The tooling equipment required by the manufacture of the large clay sand core according to claim 2, which is characterized in that: the first track includes the track support of two lengtheners, a plurality of track pivots and a plurality of pairs of rail wheels, two track supports are parallel to each other and the level is placed, but every track pivot both ends connect on two track supports respectively free rotation, each track pivot sets up along the equal interval of track support, every pair of rail wheels corresponds to connect and is fixed in on one of them track pivot, every rail wheel includes a supporting part and supports the portion of leaning on, the cross-sectional diameter of supporting part is less than the cross-sectional diameter who supports the portion of leaning on, the supporting part is used for holding up the core box guide rail, support and support the portion of leaning on and right core box guide rail.

4. The tooling equipment required by the manufacture of the large clay sand core according to claim 2, which is characterized in that: the second track comprises two lengthwise track supports, a plurality of track rotating shafts and a plurality of pairs of track wheels, the two track supports are parallel to each other and are horizontally placed, two ends of each track rotating shaft are respectively and freely rotatably connected to the two track supports, each track rotating shaft is arranged at equal intervals along the track supports, each pair of track wheels are correspondingly connected and fixed to one of the track rotating shafts, one side part of the core box main body is clamped between each pair of track wheels, one track wheel surface is used for abutting against the side surface of the guide rail, and the large outer circle and the small outer circle of each track wheel are matched with the concave-convex surface of the guide rail of the core box.

5. The tooling equipment required by the manufacture of the large clay sand core according to claim 4, which is characterized in that: the track support top that is located the outside is through a welded fastening support riser, supports the riser top and passes through a welded fastening support diaphragm, many pairs of right wheelsets fix on supporting the diaphragm along support extending direction equidistance interval, and every is right the wheelset and is included a pivot of fixing on supporting the diaphragm and rotatable connection in the epaxial pulley, and core box main part another lateral part presss from both sides and puts between many pairs of pulleys of right wheelset.

6. The tooling equipment required by the manufacture of the large clay sand core according to claim 1, which is characterized in that: and an adjusting part is arranged between the bearing sleeve and the optical axis and used for adjusting the position of the bearing sleeve on the optical axis and fixing the bearing sleeve on the optical axis.

7. The tooling equipment required by the manufacture of the large clay sand core according to claim 2, which is characterized in that: each bearing sleeve comprises a supporting part and an abutting part, the supporting part and the abutting part are cylindrical, the section diameter of the supporting part is smaller than that of the abutting part, the top surface of the abutting part abuts against the bottom surface of the core box main body, and the side surface of the abutting part abuts against the side surface of the guide rail.

8. A manufacturing process of a large clay sand core realized by the tooling equipment of any one of claims 1 to 7 comprises the following manufacturing steps:

step one, a manual sand pounding or mechanical sand shooting method is used, wherein a cavity of an upper core box and a cavity of a lower core box are respectively filled with molding sand, the molding sand in the cavity and the cavity is extruded and compacted, and then the redundant molding sand protruding out of the plane of an opening of the cavity of the upper core box and the redundant molding sand protruding out of the plane of the opening of the cavity of the lower core box are respectively scraped to be flat, so that a first half sand core arranged in the cavity and a second half sand core arranged in the cavity are formed;

secondly, placing the upper core box on the first track, enabling the cavity to face upwards at the moment, enabling the upper core box to horizontally move along the first track and be pushed into the turnover machine, enabling the upper core box to be placed on the bearing sleeve on the right side in the upper and lower rows of bearing sleeves, enabling the turnover ring to rotate 90 degrees anticlockwise, enabling the upper core box to be vertically erected, then pushing the upper core box backwards, moving the upper core box out of the turnover machine, enabling the upper core box to reach the second track, and then enabling the turnover ring to rotate 90 degrees clockwise to return to the initial state;

step three, the lower core box is placed on the first track, the cavity is opened upwards at the moment, the lower core box moves horizontally along the first track and is pushed into the turnover machine, the lower core box is placed on the bearing sleeves on the right side in the upper and lower rows of bearing sleeves, then the turnover ring rotates clockwise by 90 degrees, the lower core box is erected vertically, the upper core box on the second track is pushed forwards, the upper core box returns to the turnover machine, and the opening of the cavity of the upper core box faces the opening of the cavity of the lower core box;

aligning the positioning pin holes and the positioning pin rods of the vertically erected upper core box and the vertically erected lower core box, moving the bearing sleeves positioned on one side of the upper and lower rows of bearing sleeves along the upper and lower rows of optical axes to enable the upper core box and the lower core box to be close to each other until the upper core box and the lower core box are attached to each other, inserting the positioning pin rods of the upper core box into the positioning pin holes fixed in the lower core box in an aligned manner, and inserting the positioning pin rods of the lower core box into the positioning pin holes fixed in the upper core box in an aligned manner;

rotating the turnover ring by 90 degrees anticlockwise to stack the upper core box above the lower core box, and then pushing the upper core box and the lower core box which are stacked together forwards and moving out of the turnover machine to reach the first rail;

and step six, lifting the upper core box upwards along the vertical direction, then taking away, laminating the first half sand core and the second half sand core together up and down at the moment, and enabling the edge parts to be matched up and down to form an integral large clay sand core.

Technical Field

The invention relates to the technical field of casting, in particular to a manufacturing process of a large clay sand core and required tooling equipment.

Background

Because clay is used as a binder for manufacturing the clay sand core, organic matters such as resins and the like are not contained, and when the clay sand core is cast by high-temperature molten iron, the discharged harmful gas is less, and the requirement on environmental friendliness can be met. In the existing manual clay sand core manufacturing process, an upper core box and a lower core box are closed manually and then clamped, sand is manually pounded layer by layer until the upper core box and the lower core box are filled with core sand, redundant sand is scraped, then the upper core box is horizontally placed, the upper core box is taken away, and the sand core is taken out from the lower core box by two hands and placed in a lower sand box. The process is only suitable for small and not heavy products, and the manual force cannot meet the requirement for large and complicated sand cores.

The above background disclosure is only for the purpose of assisting understanding of the concept and technical solution of the present invention and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.

Disclosure of Invention

The invention aims to solve the problems and provide a manufacturing process of a large clay sand core and required tooling equipment.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a required tool equipment of large-scale clay psammitolite preparation, includes:

the sand core comprises an upper core box, wherein one side surface of the upper core box is provided with one or more concave cavities for forming sand cores, positioning pin holes and positioning pin rods;

the core box comprises a lower core box, wherein one side surface of the lower core box is provided with one or more concave cavities, positioning pin holes and positioning pin rods for forming sand cores, and two sides of the upper core box and the lower core box are respectively provided with a guide rail which is symmetrical and convex at two sides;

the first track is used for conveying the upper core box and the lower core box;

a second track for conveying the vertically erected upper core box;

the turnover machine is arranged between the first track and the second track and comprises two turnover rings, two side plates, a plurality of optical axes and a plurality of pairs of bearing sleeves for bearing an upper core box and a lower core box, wherein the two turnover rings are arranged in parallel in tandem, the turnover ring positioned on the front side is arranged close to the first track, the turnover ring positioned on the rear side is arranged close to the second track, the first left side and the second right side of the two side plates are arranged between the two turnover rings in parallel, two ends of each side plate are respectively connected and fixed with the two turnover rings, each side plate is provided with an upper row of optical axis holes and a lower row of optical axis holes, each row of optical axis holes comprises a plurality of optical axis holes which are arranged at equal intervals, two ends of each optical axis are correspondingly inserted into the two optical axis holes of the two side plates so as to form an upper row of optical axes and a lower row of optical axes which are arranged between the two side plates, each pair of bearing sleeves is arranged on one, The bearing sleeves can move along the circumferential direction of the optical axis and can also move left and right along the axial direction of the optical axis; when the overturning ring is in an initial state and does not rotate, the two side plates are parallel to the horizontal plane, the overturning ring positioned on the front side is butted with the first rail, and the upper core box and the lower core box can be directly pushed into the overturning machine along the first rail; when the turnover ring rotates 90 degrees from the initial state, the two side plates are perpendicular to the horizontal plane, the turnover ring positioned at the rear side is in butt joint with the second rail, and the upper core box can be directly pushed out of the turnover machine to enter the second rail.

Furthermore, the upper core box and the lower core box respectively comprise a core box main body, the lower surface of the core box main body protrudes downwards to form a guide rail, the upper surface of the core box main body of the upper core box is provided with a concave cavity, the upper surface of the core box main body of the lower core box is provided with a concave cavity, the upper surfaces of the core box main bodies of the upper core box and the lower core box are provided with two positioning pin holes and two positioning pin rods at the peripheries of the concave cavity and the concave cavity, and the positioning pin rods are used for being inserted into the positioning pin.

Further, first track includes the track support of two lengtheners, a plurality of track pivots and a plurality of pairs of rail wheels, two track supports are parallel to each other and the level is placed, but every track pivot both ends are connected on two track supports respectively free rotation, each track pivot sets up along the equal interval of track support, every pair of rail wheels corresponds to connect and is fixed in on one of them track pivot, every rail wheel includes a supporting part and one and supports the portion of leaning on, the cross-sectional diameter of supporting part is less than the cross-sectional diameter who supports the portion of leaning on, the supporting part is used for holding up the core box guide rail, support the portion of leaning on and right the core box guide rail.

Further, the second track comprises two longitudinal track supports, a plurality of track rotating shafts and a plurality of pairs of track wheels, the two track supports are parallel to each other and are horizontally placed, two ends of each track rotating shaft are respectively and freely rotatably connected to the two track supports, each track rotating shaft is arranged at equal intervals along the track supports, each pair of track wheels are correspondingly connected and fixed to one track rotating shaft, one side portion of the core box main body is clamped between each pair of track wheels, the wheel surface of one track wheel is used for abutting against the side surface of the guide rail, and the large outer circle and the small outer circle of each track wheel are matched with the concave-convex surface of the guide rail of the core box.

Furthermore, a support vertical plate is fixed above the track support positioned on the outer side through welding, a support transverse plate is fixed at the top end of the support vertical plate through welding, a plurality of pairs of centering wheel sets are fixed on the support transverse plate at equal intervals along the extension direction of the support, each centering wheel set comprises a rotating shaft fixed on the support transverse plate and a rotatable pulley connected to the rotating shaft, and the other side part of the core box body is clamped between the pulleys of the plurality of pairs of centering wheel sets.

Furthermore, an adjusting part is arranged between the bearing sleeve and the optical axis and used for adjusting the position of the bearing sleeve on the optical axis and fixing the bearing sleeve on the optical axis.

Furthermore, each bearing sleeve comprises a supporting portion and an abutting portion, the supporting portion and the abutting portion are cylindrical, the section diameter of the supporting portion is smaller than that of the abutting portion, the top surface of the abutting portion abuts against the bottom surface of the core box main body, and the side surface of the abutting portion abuts against the side surface of the guide rail.

A manufacturing process of a large clay sand core realized by means of the tooling equipment comprises the following manufacturing steps:

step one, a manual sand pounding or mechanical sand shooting method is used, wherein a cavity of an upper core box and a cavity of a lower core box are respectively filled with molding sand, the molding sand in the cavity and the cavity is extruded and compacted, and then the redundant molding sand protruding out of the plane of an opening of the cavity of the upper core box and the redundant molding sand protruding out of the plane of the opening of the cavity of the lower core box are respectively scraped to be flat, so that a first half sand core arranged in the cavity and a second half sand core arranged in the cavity are formed;

secondly, placing the upper core box on the first track, enabling the cavity to face upwards at the moment, enabling the upper core box to horizontally move along the first track and be pushed into the turnover machine, enabling the upper core box to be placed on the bearing sleeve on the right side in the upper and lower rows of bearing sleeves, enabling the turnover ring to rotate 90 degrees anticlockwise, enabling the upper core box to be vertically erected, then pushing the upper core box backwards, moving the upper core box out of the turnover machine, enabling the upper core box to reach the second track, and then enabling the turnover ring to rotate 90 degrees clockwise to return to the initial state;

step three, the lower core box is placed on the first track, the cavity is opened upwards at the moment, the lower core box moves horizontally along the first track and is pushed into the turnover machine, the lower core box is placed on the bearing sleeves on the right side in the upper and lower rows of bearing sleeves, then the turnover ring rotates clockwise by 90 degrees, the lower core box is erected vertically, the upper core box on the second track is pushed forwards, the upper core box returns to the turnover machine, and the opening of the cavity of the upper core box faces the opening of the cavity of the lower core box;

aligning the positioning pin holes and the positioning pin rods of the vertically erected upper core box and the vertically erected lower core box, moving the bearing sleeves positioned on one side of the upper and lower rows of bearing sleeves along the upper and lower rows of optical axes to enable the upper core box and the lower core box to be close to each other until the upper core box and the lower core box are attached to each other, inserting the positioning pin rods of the upper core box into the positioning pin holes fixed in the lower core box in an aligned manner, and inserting the positioning pin rods of the lower core box into the positioning pin holes fixed in the upper core box in an aligned manner;

rotating the turnover ring by 90 degrees anticlockwise to stack the upper core box above the lower core box, and then pushing the upper core box and the lower core box which are stacked together forwards and moving out of the turnover machine to reach the first rail;

and step six, lifting the upper core box upwards along the vertical direction, then taking away, laminating the first half sand core and the second half sand core together up and down at the moment, and enabling the edge parts to be matched up and down to form an integral large clay sand core.

The manufacturing process of the large clay sand core and the required tooling equipment provided by the invention save labor and effectively solve the manufacturing problem of the large sand core.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a lower core box of tooling equipment required for manufacturing a large clay sand core according to a preferred embodiment of the invention;

FIG. 2 is a schematic structural view of a first rail in tooling equipment required for manufacturing a large clay sand core according to a preferred embodiment of the present invention, and in FIG. 2, a lower core box is placed on the first rail;

FIG. 3 is a schematic structural view of a second rail of the tooling equipment required for manufacturing the large clay sand core according to the preferred embodiment of the present invention, and in FIG. 3, an upper core box is placed on the second rail;

FIG. 4 is a schematic structural view of a tilter in tooling equipment required for manufacturing large clay sand cores, according to a preferred embodiment of the present invention;

FIG. 5 is a top view of the upender of FIG. 4;

FIG. 6 is a front side view of the upender of FIG. 4;

FIG. 7 is a schematic view of the mating structure of the inversion ring and the side plate of FIG. 4;

FIG. 8 is a schematic view of the structure of the side plate, the optical axis and the bearing housing of FIG. 4;

FIGS. 9-17 are schematic diagrams of steps in a process for making a large clay sand core according to a preferred embodiment of the present invention;

in the figure: an upper core box 1; a guide rail 11; a cavity 12; a core box main body 13; a dowel hole 132; a dowel bar 134; a first half sand core 14; a lower core box 2; a second half sand core 24; a first track 3; a rail bracket 32; a rail rotation shaft 34; a rail wheel 36; a support portion 362; an abutment 364; a second track 4; a rail bracket 42; a support riser 422; a support cross plate 424; a rail rotation shaft 44; a rail wheel 46; a righting wheel set 48; a tilter 5; a flip ring 52; support drive wheels 522; side plates 54; a light axis hole 542; an optical axis 56; an adjusting member 57; a bearing housing 58; a support portion 582; an abutment 584.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 8, a tooling device required for manufacturing a large clay sand core according to a preferred embodiment of the present invention includes an upper core box 1, a lower core box 2, a first rail 3, a second rail 4, and a turnover machine 5.

The upper core box 1 and the lower core box 2 both comprise a core box main body 13, and the lower surfaces of the core box main bodies 13 are both protruded downwards to form guide rails 11.

One or more concave cavities 12 are formed in the upper surface of a core box main body 13 of the upper core box 1, one or more concave cavities 12 are formed in the upper surface of a core box main body 13 of the lower core box 2, and the concave cavities 12 are used for filling molding sand and are compacted and formed to prepare the large clay sand core for casting.

The upper core box 1 and the lower core box 2 are provided with a positioning pin hole 132 and a positioning pin rod 134 on the surface of one side forming the concave cavity 12;

specifically, two positioning pin holes 132 and two positioning pin rods 134 are arranged on the upper surfaces of the core box main bodies 13 of the upper core box 1 and the lower core box 2 at the periphery of the cavity 12, and the positioning pin rods 134 are used for being inserted into the positioning pin holes 132 to be matched and fixed.

The first rail 3 is used for conveying the upper core box 1 and the lower core box 2, and comprises two longitudinal rail brackets 32, a plurality of rail rotating shafts 34 and a plurality of pairs of rail wheels 36.

The two rail brackets 32 are parallel and horizontally arranged, two ends of each rail rotating shaft 34 are respectively and freely rotatably connected to the two rail brackets 32, the rail rotating shafts 34 are arranged at equal intervals along the rail brackets 32, and each pair of rail wheels 36 is correspondingly connected and fixed on one rail rotating shaft 34. Each track wheel 36 comprises a support portion 362 and an abutment portion 364, the cross-sectional diameter of the support portion 362 being smaller than the cross-sectional diameter of the abutment portion 364, the support portion 362 being used to lift the rail 11, and the abutment portion 364 righting the rail 11.

The second track 4 is for transporting the vertically erected upper core box 1 and comprises two elongated track supports 42, a plurality of track spindles 44, a plurality of pairs of track wheels 46, and a plurality of pairs of righting wheel sets 48.

The two rail brackets 42 are parallel and horizontally arranged, two ends of each rail rotating shaft 44 are respectively and freely rotatably connected to the two rail brackets 42, the rail rotating shafts 44 are arranged at equal intervals along the rail brackets 42, and each pair of rail wheels 46 is correspondingly connected and fixed on one rail rotating shaft 44. The distance between each pair of track wheels 46 is slightly larger than the thickness of the core box body 13, one side part of the core box body 13 is clamped between each pair of track wheels 46, one track wheel 46 face is used for abutting against the side surface of the guide rail 11, and the plurality of pairs of righting wheel sets 48 are used for clamping and positioning the other side part of the core box body 13.

A supporting vertical plate 422 is fixed above the rail bracket 42 at the outer side through welding, a supporting transverse plate 424 is fixed at the top end of the supporting vertical plate 422 through welding, and the plurality of pairs of centering wheel sets 48 are fixed on the supporting transverse plate 424 at equal intervals along the extending direction of the bracket 42. Each of the centering wheel sets 48 includes a shaft fixed to the cross support plate 424 and a pulley rotatably connected to the shaft. The other side of the core box body 13 is sandwiched between the pulleys of the pairs of righting wheel sets 48.

The tilter 5 comprises two tilting rings 52, two side plates 54, a plurality of optical axes 56 and a plurality of pairs of bearing sleeves 58 for bearing the upper core box 1 and the lower core box 2.

The two overturning rings 52 are arranged in parallel in tandem, the overturning ring 52 positioned at the front side is arranged close to the first track 3, and the overturning ring 52 positioned at the rear side is arranged close to the second track 4; two side plates 54 are arranged in parallel left and right between the two turning rings 52, and two ends of each side plate 54 are respectively connected and fixed with the two turning rings 52. Each side plate 54 is provided with an upper row of lighting hole holes 542 and a lower row of lighting hole holes 542, and each row of lighting hole holes 542 comprises a plurality of lighting hole holes 542 which are arranged at equal intervals. The two ends of each optical axis 56 are inserted into the two optical axis holes 542 fixed on the two side plates 54, so as to form two rows of upper and lower optical axes 56 disposed between the two side plates 54. Each pair of bearing sleeves 58 is nested on one of the optical axes 56 in a left-right correspondence, thereby forming upper and lower rows of bearing sleeves 58 disposed between the two side plates 54. The bearing sleeve 58 is movable circumferentially along the optical axis 56 and also axially left and right along the optical axis 56.

Preferably, an adjusting member 57 (shown in fig. 5) is disposed between the bearing sleeve 58 and the optical axis 56 for adjusting the position of the bearing sleeve 58 on the optical axis 56 and fixing the bearing sleeve 58 on the optical axis 56.

In this embodiment, each row of light hole holes 542 includes four light hole holes 542 equidistantly spaced apart.

Each bearing housing 58 includes a support portion 582 and an abutment portion 584. The support portion 582 and the abutting portion 584 are both cylindrical, and the cross-sectional diameter of the support portion 582 is smaller than the cross-sectional diameter of the abutting portion 584. The top surface of the abutting portion 584 abuts against the bottom surface of the core box main body 13, and the side surface of the abutting portion 584 abuts against the side surface of the guide rail 11.

Preferably, the core box main body 13 of the upper core box 1 and the lower core box 2 has a length of 960mm, a width of 880mm and a thickness of 145 mm. The distance from the side surface of the guide rail 11 to the side surface of the core box main body 13 is 40 mm; the diameter of the optical axis 56 is 30mm, the diameter of the support portion 582 is 60mm, the diameter of the abutting portion 584 is 180mm, and the lengths of the support portion 582 and the abutting portion 584 are both 75 mm.

Optionally, two supporting driving wheels 522 are disposed at the bottom of each inversion ring 52 and are in transmission fit with the inversion ring 52, and the supporting driving wheels 522 are disposed to facilitate adjustment of the rotation angle of the inversion ring 52.

Specifically, the support driving wheel 522 is in transmission connection with a motor, and the support driving wheel 522 is driven to rotate by the operation of the motor.

When the overturning ring 52 is in an initial state and does not rotate, the two side plates 54 are parallel to the horizontal plane, the overturning ring 52 positioned on the front side is butted with the first track 3, and the upper core box 1 and the lower core box 2 can be directly pushed into the overturning machine 5 along the first track 3; when the turning ring 52 rotates 90 degrees under the driving action of the motor, the two side plates 54 are perpendicular to the horizontal plane, the turning ring 52 positioned at the rear side is butted with the second rail 4, and the upper core box 1 can be directly pushed out of the turning machine 5 to enter the second rail 4.

As shown in fig. 9-17, the invention also provides a manufacturing process of the large clay sand core by means of the tooling equipment, which comprises the following manufacturing steps:

step one, a manual sand pounding or mechanical sand shooting method is used, wherein the cavity 12 of the upper core box 1 and the cavity 12 of the lower core box 2 are respectively filled with molding sand, the molding sand in the cavity 12 is extruded and compacted, and then the excessive molding sand protruding out of the open plane of the cavity 12 of the upper core box 1 and the excessive molding sand protruding out of the open plane of the cavity 12 of the lower core box 2 are respectively scraped to be flat, so that a first half sand core 14 arranged in the cavity 12 and a second half sand core 24 arranged in the cavity 12 are formed;

step two, the upper core box 1 is placed on the track wheel 36 of the first track 3, the cavity 12 is opened upwards at the moment, the upper core box 1 moves horizontally along the first track 3 and is pushed into the turnover machine 5, so that the upper core box 1 is placed on the bearing sleeve 58 positioned on the right side in the upper and lower rows of bearing sleeves 58 (as shown in figure 9), then, the motor drives the overturning ring 52 to rotate 90 degrees counterclockwise, the upper core box 1 is vertically erected (as shown in fig. 10), the upper core box 1 is pushed backwards and moved out of the overturning machine 5 to the second rail 4, one side part of the core box body 13 of the upper core box 1 is clamped between each pair of rail wheels 46, the side surface of the guide rail 11 of the upper core box 1 is abutted against the wheel surface of the rail wheel 46 of the second rail 4, the other side part of the core box body 13 of the upper core box 1 is clamped and positioned on the plurality of pairs of righting wheel sets 48, and then the overturning ring 52 is rotated 90 degrees clockwise to return to the initial state;

step three, the lower core box 2 is placed on the track wheel 36 of the first track 3, the cavity 12 is opened upwards at the moment, the lower core box 2 moves horizontally along the first track 3 and is pushed into the turnover machine 5, the lower core box 2 is placed on the bearing sleeve 58 positioned on the right side in the upper and lower rows of bearing sleeves 58 (as shown in fig. 11), then the turnover ring 52 is driven by the motor to rotate clockwise 90 degrees, the lower core box 2 is vertically erected (as shown in fig. 12), the upper core box 1 on the second track 4 is pushed forwards, the upper core box 1 is returned into the turnover machine 5 (as shown in fig. 13), and the opening of the cavity 12 of the upper core box 1 is opposite to the opening of the cavity 12 of the lower core box 2 at the moment;

aligning the positioning pin holes 132 and the positioning pin rods 134 of the vertically erected upper core box 1 and the vertically erected lower core box 2, moving the bearing sleeves 58 positioned on one side (left side or right side) of the upper and lower rows of bearing sleeves 58 along the upper and lower rows of optical axes 56 to enable the upper core box 1 and the lower core box 2 to approach each other until the upper core box 1 and the lower core box 2 are attached to each other, inserting the positioning pin rods 134 of the upper core box 1 into the positioning pin holes 132 of the lower core box 2 in an aligned manner, and inserting the positioning pin rods 134 of the lower core box 2 into the positioning pin holes 132 of the upper core box 1 in an aligned manner (as shown in fig. 14);

preferably, the bearing housing 58 is moved along the upper and lower rows of optical axes 56 by pushing a push-pull rod (not shown) to close and fold the vertically erected upper and lower core cases 1 and 2.

Step five, rotating the turnover ring 52 by 90 degrees anticlockwise to stack the upper core box 1 above the lower core box 2 (as shown in fig. 15), and then pushing the upper core box 1 and the lower core box 2 which are stacked together forwards and moving the upper core box and the lower core box out of the turnover machine 5 to reach the first rail 3 (as shown in fig. 16);

and step six, lifting the upper core box 1 upwards along the vertical direction, and then taking away, wherein the first half sand core 14 and the second half sand core 24 are laminated together up and down, and the edge parts are matched up and down to form a complete large clay sand core (shown in figure 17) which is used for casting and meets the service performance.

The above descriptions of the embodiments of the present invention, which are not related to the above description, are well known in the art, and may be implemented by referring to the well-known technologies.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.