Method for using a shell core machine with a rotatable sandblasting head

Abstract

A shell core machine with a rotatable sandblasting head comprises a shell core machine body, the sandblasting head being mounted on the back of the shell core machine body via two parallel first and second hinges, and two connecting rod mechanisms mounted on the front of the shell core machine body, respectively mounted below the first hinge and above the second hinge. A wedge key is embedded in the center of the right side of the shell core machine body, and a keyway is correspondingly provided on the left side of the sandblasting head. The connecting rod mechanism comprises a connecting rod, the left end of which is hinged to the shell core machine body, the right end of which is a stud structure that is clamped in a U-shaped groove protruding from the front of the sandblasting head, and a butterfly nut that matches the stud structure at the right end of the connecting rod. The sandblasting head of the present invention can be rotated to the back of the shell core machine, thereby avoiding interference with the sandblasting head above the mold during lifting operations, thereby saving effort and being efficient. The sandblasting head is also suitable for lifting larger molds.

Description

Technical Field

[0001] The invention relates to the technical field of sand-making molds, in particular to a shell core machine with a rotatable sandblasting head. Background Art

[0002] Working Principle of a Shell Core Machine: During operation, the sandblasting funnel slides forward along the guide rails at the bottom of the sandblasting head until it is directly above the mold. When the sandblasting operation is complete, the sandblasting funnel slides backward along the guide rails at the bottom of the sandblasting head until it is directly below the machine body. The mold is mounted on two mounting plates below the sandblasting head. These plates slide left and right along four connecting crossbars, driving the mold opening and closing. Before the shell core machine can core, the mold must be installed and debugged, and most of the preparatory work is spent on mold installation. Because the sandblasting head of older shell core machines is fixed directly above the mold and cannot be moved, lifting the mold requires avoiding interference with the sandblasting head above the shell core machine and avoiding the four connecting crossbars on the mounting plate. This is time-consuming and labor-intensive, requiring constant adjustments to ensure the mold is properly positioned. Access can only be made between the four connecting crossbars on the front mounting plate, requiring specialized equipment such as a forklift and resulting in high costs. Furthermore, large molds cannot be installed from the front or hoisted. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a shell core machine with a rotatable sandblasting head, which can facilitate the hoisting of the mold, save labor and be efficient.

[0004] The technical solution of the present invention is as follows: it includes a shell core machine body, a sandblasting head is mounted on the back of the shell core machine body through two first hinges and a second hinge placed parallel to each other, and two connecting rod mechanisms are mounted on the front of the shell core machine body, and are respectively mounted below the first hinge and above the second hinge; a wedge key is embedded in the center of the right side of the shell core machine body, and a key groove is correspondingly provided on the left side of the sandblasting head; the connecting rod mechanism includes a connecting rod, the left end of the connecting rod is hinged to the shell core machine body, the right end of the connecting rod is a stud structure stuck in a U-shaped groove raised on the front of the sandblasting head, and also includes a butterfly nut matching the stud structure at the right end of the connecting rod.

[0005] The keyway matches the shape and size of the wedge key.

[0006] The beneficial effects of the present invention are that the sandblasting head can be rotated to the back of the shell core machine, thereby avoiding the interference of the sandblasting head above the mold during the lifting operation, saving labor and being efficient; and it is also suitable for lifting larger molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural diagram of an existing shell core machine.

[0008] Figure 2 It is a structural schematic diagram of the present invention.

[0009] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0010] Figure 4 It is a schematic diagram of the use state of the present invention.

[0011] In the figure, the shell core machine body (1); the first hinge (2); the sandblasting head (3); the connecting rod (4); the wedge key (5); the butterfly nut (6); and the second hinge (7). DETAILED DESCRIPTION

[0012] Figure 1 In the existing shell core machine, the sandblasting head is fixed above the mold and cannot be moved. If the mold is hoisted, it is necessary to avoid the interference of the sandblasting head above the shell core machine and the four connecting horizontal axes on the mounting plate, which makes installation difficult.

[0013] Figure 2 In the embodiment, the back side of the shell core machine body 1 is connected to the back side of the sandblasting head 3 through a first hinge 2.

[0014] Figure 3 In the figure, the back of the shell core machine body 1 is connected to the back of the sandblasting head 3 by a first hinge 2. The sandblasting head 3 can rotate horizontally around the first hinge 2; two connecting rod mechanisms are installed on the front of the shell core machine body 1, respectively installed below the first hinge 2 and above the second hinge 7. The connecting rod mechanism includes a connecting rod 4, and the left end of the connecting rod 4 is connected to the shell core machine body 1 by a hinge. The right end of the connecting rod 4 is a stud, which is stuck in the U-shaped groove raised on the front of the sandblasting head 3. Tighten the butterfly nut 6, and the shell core machine body 1 and the sandblasting head 3 are connected as a whole. A wedge key 5 is embedded in the center of the right side of the shell core machine body 1, and a key groove is opened in the center of the left side of the sandblasting head 3. The wedge key 5 serves as a limiter. After the machine body 1 and sandblasting head 3 are connected as a single unit, the wedge key 5 engages the keyway, preventing the sandblasting head 3 from bouncing or swinging relative to the shell core machine body 1 during the downward sandblasting operation due to the reaction force of air pressure. This could cause sand leakage or incomplete filling of the core box. Before hoisting the mold, loosen the butterfly nut 6 and rotate the connecting rod 4 to disengage the right-end stud from the U-shaped groove. The sandblasting head 3 can now be rotated horizontally around the first hinge 2 to the inside of the shell core machine body 1. The sandblasting head 3 is no longer directly above the installed mold and no longer interferes with the mold's hoisting. After the mold is installed, the sandblasting head 3 is rotated horizontally in the opposite direction to directly above the mold. The wedge key 5 is now firmly seated in the keyway of the sandblasting head 3. The connecting rod 4 is rotated in the opposite direction to engage the raised U-shaped groove on the front of the sandblasting head 3. The butterfly nut 6 is tightened, and the shell core machine body 1 and sandblasting head 3 are reconnected as a single unit through the connecting rod mechanism.

[0015] Figure 4 In the figure, the sandblasting head 3 has been rotated to the back of the machine body 1. At this time, the mold can be hoisted by only four connecting horizontal axes passing vertically, avoiding the interference of the sandblasting head 3, thereby making the mold installation labor-saving and efficient.

Claims

1. A method for using a shell core machine with a rotatable sandblasting head, characterized in that: The shell core machine comprises a shell core machine body (1), a sandblasting head (3) is mounted on the back of the shell core machine body (1) via two first hinges (2) and a second hinge (7) placed parallel to each other, and two connecting rod mechanisms are mounted on the front of the shell core machine body (1), and are respectively mounted below the first hinge (2) and above the second hinge (7); a wedge key (5) is embedded in the center of the right side of the shell core machine body (1), and a key groove is correspondingly provided on the left side of the sandblasting head (3); The connecting rod mechanism includes a connecting rod (4), the left end of the connecting rod (4) is hinged to the shell core machine body (1), the right end of the connecting rod (4) is a stud structure stuck in the U-shaped groove raised on the front of the sandblasting head (3), and also includes a butterfly nut (6) matching the stud structure at the right end of the connecting rod (4); The specific steps of the method are as follows: before hoisting the mold, loosen the butterfly nut and rotate the connecting rod to disengage the right-end stud from the U-shaped groove; at this time, the sandblasting head rotates horizontally around the first hinge to the inner side of the shell core machine body, and the sandblasting head is not directly above the installed mold and no longer interferes with the hoisting of the mold; when the mold is installed, the sandblasting head is rotated horizontally in the opposite direction to directly above the mold; at this time, the wedge key is tightly attached to the keyway of the sandblasting head, and the connecting rod is rotated in the opposite direction to be stuck in the U-shaped groove raised on the front side of the sandblasting head, and the butterfly nut is tightened. Through the connecting rod mechanism, the shell core machine body and the sandblasting head are reconnected as a whole.

2. The method for using a shell core machine with a rotatable sandblasting head according to claim 1, characterized in that: The keyway matches the shape and size of the wedge key (5).

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