Anti-deformation sand casting mold

Abstract

The utility model relates to the technical field of casting, in particular to an anti-deformation sand casting mold which comprises a lower sand box and an upper sand box, two symmetrically distributed sliding grooves are formed in the upper end face of the lower sand box, two-way lead screws are rotationally connected in the two sliding grooves, the outer walls of the two-way lead screws are in threaded connection with sliding blocks, and the sliding blocks are in threaded connection with the upper sand box. The right ends of the two bidirectional lead screws penetrate through the sliding grooves, extend to the exterior of the lower sand box and are fixedly connected with first gears, the right end face of the lower sand box is rotationally connected with a second gear, the second gear is in transmission connection with the two first gears through chains, and the lower end face of the upper sand box is fixedly connected with four clamping blocks which are symmetrical to each other. And the upper sand box and the lower sand box can be fixed by rotating a second gear, the problem that in the prior art, a plurality of bolts need to be screwed in sequence for fixation is solved, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to an anti-deformation sand casting mold. Background Art

[0002] Casting is the process of pouring liquid metal into a casting cavity that is adapted to the shape of the part, and then cooling and solidifying it to obtain a part or blank. Sand casting is a casting method that produces castings in sand molds. Since the molding materials used in sand casting are cheap and easy to obtain, and the mold is easy to manufacture, it can adapt to the single-piece production, batch production, and mass production of castings. For a long time, it has been the basic process in casting production.

[0003] Existing sand casting molds such as Figure 1 As shown, it includes a lower sand box 1 and an upper sand box 2. The four corners of the lower end surface of the upper sand box 2 are fixedly connected with limiting columns 9. The four corners of the upper end surface of the lower sand box 1 are provided with limiting grooves 10 matching the limiting columns 9. The outer wall of the lower sand box 1 and the outer walls of the four limiting columns 9 are provided with threaded holes 12. Bolts 13 are threadedly connected in the threaded holes 12. The limiting columns 9 are inserted into the limiting grooves 10 and then the upper sand box 2 and the lower sand box 1 are fixed by bolts 13 to prevent displacement during casting and deformation of the casting.

[0004] Although the above-mentioned sand casting mold can fix the upper sand box 2 and the lower sand box 1 to prevent the casting from being deformed due to deviation during casting, its fixation requires four bolts 13 to be screwed in sequence, which is cumbersome, time-consuming and labor-intensive. Therefore, a deformation-resistant sand casting mold is needed to solve this problem. Summary of the invention

[0005] To achieve the above purpose, the utility model provides a deformation-resistant sand casting mold, wherein the upper sand box and the lower sand box can be fixed by rotating the second gear, and the operation is simple.

[0006] The utility model is implemented as follows: a deformation-resistant sand casting mold comprises a lower sand box and an upper sand box, the upper end surface of the lower sand box is provided with two symmetrically distributed slide grooves, both of the two slide grooves are rotatably connected with bidirectional screw rods, the outer walls of the two bidirectional screw rods are threadedly connected with sliders, the right ends of the two bidirectional screw rods extend through the slide grooves to the outside of the lower sand box and are fixedly connected with a first gear, the right end surface of the lower sand box is rotatably connected with a second gear, the second gear is transmission-connected to the two first gears through a chain, and the lower end surface of the upper sand box is fixedly connected with four mutually symmetrical blocks.

[0007] In order to facilitate the limiting of the upper sand box, as a preferred anti-deformation sand casting mold of the utility model, the four corners of the upper end surface of the lower sand box are fixedly connected to limiting columns, and the four corners of the lower end surface of the upper sand box are provided with limiting grooves matching the limiting columns.

[0008] In order to facilitate pressing the upper flask downward onto the lower flask, as a preferred anti-deformation sand casting mold of the utility model, the opposite sides of the sliding block and the clamping block are both inclined.

[0009] In order to facilitate the engagement of the second gear with the chain, as a preferred anti-deformation sand casting mold of the utility model, the diameter of the first gear is smaller than the diameter of the second gear.

[0010] In order to facilitate the bidirectional screw rod to drive the slider to move, as a preferred anti-deformation sand casting mold of the utility model, the slider is slidably connected with the slide groove.

[0011] In order to facilitate the rotation of the second gear, as a preferred anti-deformation sand casting mold of the utility model, a handle is fixedly connected to the outer wall of the second gear.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the anti-deformation sand casting mold is in use, the upper sand box is connected to the lower sand box through the limit column and the limit groove, so that the four blocks are respectively inserted into the two slide grooves, and the second gear is rotated by the handle. The second gear drives the two first gears to rotate synchronously through the chain, and then drives the two bidirectional screw rods to rotate synchronously. The rotation of the bidirectional screw rod further drives the two slide blocks on the same side to move toward each other, and then the two blocks on the same side are clamped in the horizontal direction and the vertical direction at the same time, so that the upper sand box is fixed on the lower sand box to prevent the casting from being deformed due to deviation during casting. The upper sand box and the lower sand box can be fixed by rotating the second gear, which solves the problem of having to screw multiple bolts in sequence for fixing in the past, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure diagram of the existing sand casting mold;

[0015] Figure 2 This is an overall structural diagram of an anti-deformation sand casting mold of the utility model;

[0016] Figure 3 This is a disassembly diagram of an anti-deformation sand casting mold of the utility model;

[0017] Figure 4 This is a front sectional view of an anti-deformation sand casting mold of the utility model.

[0018] In the figure, 1. lower sand box; 2. upper sand box; 3. slide groove; 4. bidirectional screw; 5. first gear; 6. second gear; 7. slider; 8. block; 9. limit column; 10. limit groove; 11. handle; 12. threaded hole; 13. bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] See also Figure 2-4 A deformation-proof sand casting mold comprises a lower sand box 1 and an upper sand box 2. The upper end surface of the lower sand box 1 is provided with two symmetrically distributed chute grooves 3. Both chute grooves 3 are rotatably connected with bidirectional screw rods 4. The outer walls of the two bidirectional screw rods 4 are threadedly connected with sliders 7. The right ends of the two bidirectional screw rods 4 extend through the chute 3 to the outside of the lower sand box 1 and are fixedly connected with a first gear 5. The right end surface of the lower sand box 1 is rotatably connected with a second gear 6. The second gear 6 is transmission-connected to the two first gears 5 through a chain. The lower end surface of the upper sand box 2 is fixedly connected with four mutually symmetrical blocks 8.

[0022] In this embodiment: when in use, the four blocks 8 are respectively inserted into the two slide grooves 3, and the second gear 6 is rotated. The second gear 6 drives the two first gears 5 to rotate synchronously through the chain, and then drives the two bidirectional screw rods 4 to rotate synchronously. The rotation of the bidirectional screw rods 4 further drives the two sliders 7 on the same side to move toward each other, and then the two blocks 8 on the same side are clamped in the horizontal direction and the vertical direction at the same time, so that the upper sand box 2 is fixed on the lower sand box 1 to prevent the casting from being deformed by deviation during casting. The upper sand box 2 and the lower sand box 1 can be fixed by rotating the second gear 6, and the operation is simple.

[0023] As a technical optimization solution of the utility model, the four corners of the upper end surface of the lower sand box 1 are fixedly connected to the limiting columns 9, and the four corners of the lower end surface of the upper sand box 2 are provided with limiting grooves 10 matching the limiting columns 9.

[0024] In this embodiment, by fixing and connecting limiting columns 9 at the four corners of the upper end surface of the lower flask 1, limiting grooves 10 matching the limiting columns 9 are provided at the four corners of the lower end surface of the upper flask 2, so as to facilitate the limiting of the upper flask 2.

[0025] As a technical optimization solution of the utility model, the opposing sides of the sliding block 7 and the clamping block 8 are both inclined.

[0026] In this embodiment, by setting the opposite side of the slider 7 and the clamping block 8 as an inclined surface, it is convenient to press the upper flask 2 downward onto the lower flask 1.

[0027] As a technical optimization solution of the present invention, the diameter of the first gear 5 is smaller than the diameter of the second gear 6 .

[0028] In this embodiment, the diameter of the first gear 5 is smaller than the diameter of the second gear 6, so that the second gear 6 is easily engaged with the chain.

[0029] As a technical optimization solution of the present invention, the slider 7 is slidably connected to the slide groove 3 .

[0030] In this embodiment, the slider 7 is slidably connected to the slide groove 3, so that the slider 7 can be driven to slide when the bidirectional screw rod 4 rotates.

[0031] As a technical optimization solution of the present invention, a handle 11 is fixedly connected to the outer wall of the second gear 6 .

[0032] In this embodiment, the second gear 6 is rotated by the handle 11, which saves time and effort.

[0033] The working principle and use process of the utility model are as follows: when in use, the upper sand box 2 is connected to the lower sand box 1 through the limit column 9 and the limit groove 10, so that the four blocks 8 are respectively inserted into the two slide grooves 3, and the second gear 6 is rotated by the handle 11. The second gear 6 drives the two first gears 5 to rotate synchronously through the chain, and then drives the two bidirectional screw rods 4 to rotate synchronously. The rotation of the bidirectional screw rod 4 further drives the two sliders 7 on the same side to move toward each other, and then the two blocks 8 on the same side are clamped in the horizontal direction and the vertical direction at the same time, so that the upper sand box 2 is fixed on the lower sand box 1 to prevent the casting from being deformed by deviation during casting. The upper sand box 2 and the lower sand box 1 can be fixed by rotating the second gear 6, and the operation is simple.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deformation-resistant sand casting mold, comprising a lower sand box (1) and an upper sand box (2), characterized in that: The upper end surface of the lower sand box (1) is provided with two symmetrically distributed slide grooves (3), and the two slide grooves (3) are both rotatably connected with bidirectional screw rods (4). The outer walls of the two bidirectional screw rods (4) are both threadedly connected with sliders (7). The right ends of the two bidirectional screw rods (4) pass through the slide grooves (3) and extend to the outside of the lower sand box (1) and are fixedly connected with a first gear (5). The right end surface of the lower sand box (1) is rotatably connected with a second gear (6), and the second gear (6) is transmission-connected to the two first gears (5) through a chain. The lower end surface of the upper sand box (2) is fixedly connected with four mutually symmetrical blocks (8).

2. The anti-deformation sand casting mold according to claim 1, characterized in that: The four corners of the upper end surface of the lower sand box (1) are fixedly connected to limiting columns (9), and the four corners of the lower end surface of the upper sand box (2) are provided with limiting grooves (10) matching the limiting columns (9).

3. The anti-deformation sand casting mold according to claim 1, characterized in that: The opposing sides of the sliding block (7) and the clamping block (8) are both inclined.

4. The anti-deformation sand casting mold according to claim 1, characterized in that: The diameter of the first gear (5) is smaller than the diameter of the second gear (6).

5. The anti-deformation sand casting mold according to claim 1, characterized in that: The sliding block (7) is slidably connected to the sliding groove (3).

6. The anti-deformation sand casting mold according to claim 1, characterized in that: A handle (11) is fixedly connected to the outer wall of the second gear (6).

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