An automatic sand discharge sand box for sand mold 3D printing equipment

Abstract

The present invention belongs to the field of rapid prototyping equipment, and discloses an automatic sand discharge sand box for sand mold 3D printing equipment, including a sand box, a lifting platform, a plug, a rotating shaft, a rotating shaft frame, a valve stem, a valve stem frame, a valve cylinder, a guide rod, a guide frame, a translation cylinder, and a sand box bottom plate. The invention is characterized in that during the sand mold printing process, the lifting platform moves up and down in the sand box; when the sand needs to be cleaned after the sand mold printing is completed, the plug at the bottom of the lifting platform is opened, and the sand is discharged from the bottom of the lifting platform. A series of long holes are opened at the bottom of the lifting platform, and the plug is installed in the long holes; the valve cylinder drags the valve stem to rotate through the valve stem frame, thereby driving the rotating shaft and the plug to rotate. When the plug is opened, the sand on the upper part of the lifting platform is discharged, and automatic sand discharge is realized. This device can solve the problem of manual sand cleaning during sand mold printing, realize automatic sand discharge, and improve efficiency.

Description

Technical Field

[0001] The invention relates to an automatic sand discharge sand box for sand mold 3D printing equipment. Background Art

[0002] Sand mold 3D printing is a moldless casting technology that uses the principle of 3D printing to print sand molds layer by layer. During the sand mold printing process, sand grains are laid layer by layer in the sand box, and the printing nozzle sprays a binder to bond the sand grains into shape. After printing, the waste sand that is not involved in the bonding is discharged. The current waste sand cleaning work is done manually, which is inefficient. Summary of the invention

[0003] In order to solve the problem of waste sand cleaning during sand mold printing, the present invention provides a novel automatic sand discharge sand box of sand mold 3D printing equipment, which can realize automatic sand discharge and improve sand discharge efficiency.

[0004] The present invention is achieved through the following technical solutions:

[0005] The invention discloses an automatic sand discharge sand box for sand mold 3D printing equipment, which comprises a sand box part, a driving part and a translation part. A series of plug valves are installed at the bottom of the sand box part. After the plug valves are opened, the sand inside the sand box is discharged under the action of gravity.

[0006] Furthermore, the sand box part includes a sand box 1, a lifting platform 12, and a sand box bottom plate 9. A series of cocks 8 are installed in the lifting platform 12, and the cocks 8 are turned to open, and the sand in the sand box 1 is discharged; a series of long holes are opened on the bottom of the lifting platform 12, which cooperate with the cocks 8; a series of mesh holes are opened on the surface of the lifting platform 12, and the sand is discharged from the mesh holes.

[0007] Furthermore, the driving part includes a rotating shaft 11, a rotating shaft frame 5, a valve stem 4, a valve stem frame 3, and a valve cylinder 2. The plug 8 is connected to the rotating shaft 11, and can move relative to the rotating shaft 11 in the axial direction and lose contact; the rotating shaft 11 is installed on the rotating shaft frame 5, and the rotating shaft 11 and the rotating shaft frame 5 can rotate relative to each other; the rotating shaft 11 is connected to the valve stem 4, and the valve stem 4 drives the rotating shaft 11 to rotate; the valve stem 4 is fixed on the valve stem frame 3, and the valve stem frame 3 drives all the valve stems 4 to rotate together; a vertical long hole is opened on the upper part of the valve stem frame 3, so that it can slide relative to the valve cylinder 2 in the vertical direction, thereby converting the horizontal movement of the cylinder 2 into the arc movement of the valve stem frame 3.

[0008] Furthermore, the translation part includes a guide frame 6, a guide shaft 10 and a translation cylinder 7. The guide frame 6 is mounted on the sand box bottom plate 9, and the guide shaft 10 is mounted on the guide frame 6; the rotating shaft frame 5 is mounted on the guide shaft 10 and can move horizontally along the guide shaft 10; the translation cylinder 7 is mounted on the sand box bottom plate 9, and the translation cylinder 7 is fixedly connected to the rotating shaft frame 5, pushing the rotating shaft frame 5 to move along the guide shaft 10, thereby driving all the rotating shafts 11 to move, and realizing the contact and separation of the rotating shaft 11 and the cock 8.

[0009] During the application process, when sand mold printing is carried out, the lifting platform 12 moves up and down in the sand box 1. At this time, the translation cylinder 7 is retracted, the rotating shaft 11 is disengaged from the plug 8, the plug 8 is closed, and the sand remains above the lifting platform 12; after the sand mold printing is completed, the lifting platform 12 moves down to the lower opening position of the sand box 11, the translation cylinder 7 extends, and pushes the rotating shaft frame 5 to move toward the sand box side, and the rotating shaft 11 penetrates into the plug 8. At this time, the valve cylinder 2 is actuated, driving the valve stem frame 3 to translate, the valve stem frame 3 drives the valve stem 4 to rotate, the valve stem 4 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the plug 8 to rotate, the plug 8 is opened, and the sand leaks from the mesh of the lifting platform 12 and is discharged through the opening on the plug 8.

[0010] In summary, the beneficial effects of the present invention are as follows: mesh holes are opened on the lifting platform surface, a plug valve is arranged at the lower part, and after the plug valve is opened, sand is automatically discharged under the action of gravity, which saves manpower and improves sand discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a structural diagram of the automatic sand discharge sand box of the sand mold 3D printing equipment (main view)

[0013] Figure 2 This is a schematic diagram of the structure of the automatic sand discharge sand box of the sand mold 3D printing equipment (top view) DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0015] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings:

[0016] like Figure 1 , Figure 2As shown, an automatic sand discharge sand box for sand mold 3D printing equipment includes a sand box 1, a lifting platform 12, a plug 8, a rotating shaft 11, a rotating shaft frame 5, a valve stem 4, a valve stem frame 3, a valve cylinder 2, a guide shaft 10, a guide frame 6, a translation cylinder 7, and a sand box bottom plate 9. It is characterized in that during the sand mold printing process, the lifting platform 12 moves up and down in the sand box 1; when the sand needs to be cleaned after the sand mold printing is completed, the plug 8 at the bottom of the lifting platform 12 is opened, and the sand is discharged from the bottom of the lifting platform 12. A series of long holes are opened at the bottom of the lifting platform 12, and the plug 8 is installed in the long holes; one end of the plug 8 is connected to the rotating shaft 11, and the rotating shaft 11 is connected to the valve stem 4. The valve stem 4 is fixed on the valve stem frame 3, and the valve stem frame 3 is connected to the valve cylinder 2. The movement of the valve cylinder 2 realizes the movement of the valve stem frame 3, thereby driving the valve stem 4 to rotate, and then driving the rotating shaft 11 and the plug 8 to rotate, and the plug 8 opens and closes to realize automatic sand discharge.

[0017] The lifting platform 12 has a series of mesh holes on its surface, and a series of long holes on its lower part, which cooperate with the cock 8, so that sand particles leak from the mesh holes and pass through the holes on the cock 8 to be discharged from the lower part of the lifting platform 12;

[0018] The cock 8 is connected to the rotating shaft 11, and can move axially relative to the rotating shaft 11 and disengage from the rotating shaft 11; the rotating shaft 11 is installed on the rotating shaft frame 5, and the rotating shaft 11 and the rotating shaft frame 5 can rotate relative to each other. A guide frame 6 is installed on the sand box bottom plate 9, and a guide shaft 10 is installed on the guide frame 6. The rotating shaft frame 5 is installed on the guide shaft 10 and can move horizontally along the guide shaft 10; a translation cylinder 7 is installed on the sand box bottom plate 9, and the translation cylinder 7 is fixedly connected to the rotating shaft frame 5, pushing the rotating shaft frame 5 to move along the guide shaft 10, thereby driving all the rotating shafts 11 to move, and realizing the contact and disengagement of the rotating shaft 11 and the cock 8.

[0019] The rotating shaft 11 is connected to the valve stem 4, and the valve stem 4 is fixed on the valve stem frame 3. The valve stem frame 3 drives all the valve stems 4 to rotate together, and the valve stem 4 drives the rotating shaft 11 to rotate and then drives the plug 8 to rotate, so as to open the plug 8; a vertical long hole is opened on the upper part of the valve stem frame 3, so that it can slide relative to the valve cylinder 2 in the vertical direction, thereby converting the horizontal movement of the valve cylinder 2 into the arc movement of the valve stem frame 3. There is a gap between the valve stem frame 3 and the valve cylinder 2 in the horizontal direction, and the gap is greater than the horizontal movement distance of the rotating shaft frame 5. When the translation cylinder 7 drives the rotating shaft frame 5 to move, the valve stem frame 3 moves with it.

[0020] A square hole is opened at the bottom of the sand box 1 near the translation cylinder 7 , and the height of the hole is greater than the height of the rotating shaft 11 , so that the rotating shaft 11 can be easily inserted into the cock 8 .

[0021] In the specific application process, when sand mold printing is carried out, the lifting platform 12 moves up and is located in the sand box 1. At this time, the translation cylinder 7 is retracted, the rotating shaft 11 is disengaged from the plug 8, the plug 8 is closed, and the sand remains above the lifting platform 12; after the sand mold printing is completed, the lifting platform 12 moves down to the lower opening position of the sand box 1, the translation cylinder 7 extends, and pushes the rotating shaft frame 5 to move toward the side of the sand box 1, and the rotating shaft 11 penetrates into the plug 8. At this time, the valve cylinder 2 is actuated, driving the valve stem frame 3 to translate, the valve stem frame 3 drives the valve stem 4 to rotate, the valve stem 4 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the plug 8 to rotate, the plug 8 is opened, and the sand leaks from the mesh of the lifting platform 12 and is discharged through the opening on the plug 8.

[0022] In summary, the present invention has the following advantages: mesh holes are opened on the lifting platform surface, and a plug valve is arranged at the lower part. After the plug valve is opened, sand is automatically discharged under the action of gravity, which saves manpower and improves sand discharge efficiency.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic sand discharge sand box for sand mold 3D printing equipment, characterized in that include The sand box part provides a molding platform for sand mold 3D printing. During the entire printing process, the sand mold and sand are located inside the sand box; A driving part, which is used to open the valve at the bottom of the sand box to discharge sand; The translation part realizes the separation and contact between the driving part and the sand box valve; The sand box part comprises a sand box (1), a lifting platform (12), and a sand box bottom plate (9); wherein a series of cocks (8) are installed in the lifting platform (12), and the cocks (8) are turned and opened to discharge the sand in the sand box (1); a series of long holes are opened on the bottom of the lifting platform (12) to cooperate with the cocks (8); a series of mesh holes are opened on the surface of the lifting platform (12), and the sand is discharged from the mesh holes; The driving part comprises a rotating shaft (11), a rotating shaft frame (5), a valve stem (4), a valve stem frame (3), and a valve cylinder (2); wherein the plug (8) is connected to the rotating shaft (11), and can move relative to the rotating shaft (11) in the axial direction and be out of contact; the rotating shaft (11) is mounted on the rotating shaft frame (5), and the rotating shaft (11) and the rotating shaft frame (5) can rotate relative to each other; the rotating shaft (11) is connected to the valve stem (4), and the valve stem (4) drives the rotating shaft (11) to rotate; the valve stem (4) is fixed on the valve stem frame (3), and the valve stem frame (3) drives all the valve stems (4) to rotate together; a vertical long hole is opened on the upper part of the valve stem frame (3), so that the plug (8) can slide relative to the valve cylinder (2) in the vertical direction, thereby converting the horizontal movement of the valve cylinder (2) into the arc movement of the valve stem frame (3); The translation part comprises a guide frame (6), a guide shaft (10) and a translation cylinder (7); wherein the guide frame (6) is mounted on a sand box bottom plate (9), and a guide shaft (10) is mounted on the guide frame (6); a rotating shaft frame (5) is mounted on the guide shaft (10), and can move horizontally along the guide shaft (10); a translation cylinder (7) is mounted on the sand box bottom plate (9), and the translation cylinder (7) is fixedly connected to the rotating shaft frame (5), and pushes the rotating shaft frame (5) to move along the guide shaft (10), thereby driving all rotating shafts (11) to move, and realizing the contact and separation of the rotating shaft (11) and the cock (8).

2. The automatic sand discharge sand box for sand mold 3D printing equipment according to claim 1, characterized in that: There is a gap between the valve stem frame (3) and the valve cylinder (2) in the horizontal direction, and the gap is greater than the horizontal moving distance of the rotating shaft frame (5).

3. The automatic sand discharge sand box for sand mold 3D printing equipment according to claim 1, characterized in that: During the sand mold printing process, the translation cylinder (7) is retracted, driving the rotating shaft frame (5) away from the sand box, so that the rotating shaft (11) and the plug (8) are separated; after the sand mold printing is completed, the translation cylinder (7) pushes the rotating shaft frame (5) to move toward the sand box, so that the rotating shaft (11) and the plug (8) are in contact, and then the plug (8) is driven to rotate through the rotating shaft (11).

4. The automatic sand discharge sand box for sand mold 3D printing equipment according to claim 1, characterized in that: A square hole is opened at the bottom of the sand box (1) near the translation cylinder (7), and the height of the hole is greater than the height of the rotating shaft (11).

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