Casting random sand box

Abstract

The utility model discloses a random sand box for casting, which comprises a bottom plate, a plurality of sand boxes are connected onto the bottom plate, a plurality of positioning units are arranged in each sand box, and the sand boxes are connected with track adjusting units through the positioning units. By the adoption of the technical scheme, the corresponding number of sand boxes are stacked and assembled according to the height condition of workpieces, the two sand boxes can be fixed through the positioning holes in the sand boxes, then the arrangement condition of the fixing blocks in the sand boxes is adjusted according to the size condition of the workpieces, the side faces of all the fixing blocks are attached to the workpieces, and the work efficiency is improved. Therefore, during sand filling, the arranged fixing blocks can separate the space in the sand box so as to reduce the use of sand, and meanwhile, the movably designed fixing blocks can flexibly adapt to workpieces of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a mold-free sand box for casting. Background Art

[0002] A casting sand box is a tool used for making sand molds in the casting process. During the casting process, the sand box is used to hold the mold and sand core. It is usually made of metal or heat-resistant materials that can withstand high temperatures and pressures. The design and construction of the casting sand box depends on the required shape and size of the casting. It needs to have sufficient strength and stability to support and fix the mold and sand core. The sand box usually consists of an upper box and a lower box, which are separated by a parting line. When making a sand mold, the upper sand box is placed above the lower sand box, and then the sand is filled between the two sand boxes. The contour and internal cavity of the mold are determined by the shape and assembly of the sand. After the filling is completed, the upper and lower sand boxes are separated to form a complete mold. Then, there will be some channels and through holes in the mold for the molten metal to flow in and the gas to escape.

[0003] The internal structure and size of the existing casting sand box are fixed, which results in the need to prepare sand boxes of multiple sizes or use larger sand boxes for production due to the different shapes and structures of product models. This invisibly increases the consumption of casting raw materials and occupies a large amount of production space and production funds. The increase in sand consumption and sand mold wall thickness reduces the heat conduction efficiency of the sand mold, which is not conducive to the solidification of the casting. Utility Model Content

[0004] The utility model aims to provide a mold-adaptable sand box for casting, which solves the problem of internal structure and size fixation of the sand box for casting in the prior art.

[0005] The technical scheme adopted by the utility model is: a mold-free sand box for casting comprises a bottom plate, a plurality of sand boxes are connected to the bottom plate, a plurality of positioning units are arranged in each sand box, and the sand box is connected to a track adjustment unit through the positioning units.

[0006] The utility model is also characterized in that:

[0007] Each sand box is a hollow rectangle, with grooves provided at the four corners of each side of the sand box, and positioning holes provided at the four corners of each side of the sand box, the positioning holes corresponding to the corresponding grooves, a number of fixing grooves provided on the four sides of the upper surface of the sand box, and four blind holes corresponding to the positioning holes on the upper surface of the bottom plate, a positioning pin inserted in each blind hole, and the positioning pin passes through the corresponding positioning hole.

[0008] The track adjustment unit includes several fixed limit rails, each of which is in the shape of a long strip. Several fixed grooves are evenly distributed on the same side of each fixed limit rail, and each fixed groove corresponds to a corresponding fixed groove. Two fixed limit rails parallel to each other are fixedly connected to each of the four inner walls of the sand box, and one side of each fixed limit rail provided with a fixed groove fits with the inner wall of the sand box.

[0009] The track adjustment unit also includes several groups of fixed plates, each group of fixed plates has a different length, and four slots are opened on two opposite sides of each group of fixed plates. The distance between two slots on the same side of the fixed plate corresponds to the distance between two parallel fixed limit rails. The fixed plates are clamped on the fixed limit rails, and semicircular chamfers are provided on the two sides of each fixed plate with the slots.

[0010] The positioning unit includes a first type of positioning device and a second type of positioning device.

[0011] The first type of positioning device includes a rectangular pin, one end of which is fixedly connected to a pin cap, the side of the pin cap is provided with an arc-shaped groove matching the semicircular chamfer of the fixing plate, and the rectangular pin passes through the corresponding fixing groove.

[0012] The second type of positioning device includes a fixing block body with a threaded hole, a fixing block boss is fixedly connected to one side of the fixing block body perpendicular to the axis of the threaded hole, a fastening bolt is passed through the threaded hole, a sliding block is fixedly connected to one end of the fastening bolt, an arc-shaped groove matching the semi-circular chamfer of the fixing plate is provided on the sliding block, the fixing block boss is passed through the corresponding fixing groove, and the fixing block body is clamped in the corresponding fixing groove.

[0013] A plurality of symmetrically arranged lifting piles are fixedly connected to the outer side surface of each sand box.

[0014] A grid-like grille is fixedly connected to the inner side surface of each topmost sand box.

[0015] The beneficial effect of the utility model is that the model-following space is formed in the sand box by assembling, so as to achieve the purpose of one box for multiple uses and reduce the consumption of raw materials. By adopting the above technical scheme, the corresponding number of sand boxes can be stacked and assembled according to the height of the workpiece, and the two sand boxes can be fixed through the positioning holes on the sand box. Then, according to the size of the workpiece, the arrangement of the fixed blocks in the sand box is adjusted so that the sides of each fixed block fit the workpiece. Therefore, when filling sand, the fixed blocks can separate the space in the sand box, thereby reducing the use of sand. At the same time, the movable fixed blocks can flexibly adapt to workpieces of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the mold-free sand box for casting of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the mold-free sand box for casting of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first type of positioning device for the mold-free sand box for casting of the utility model;

[0019] Figure 4 It is a partial structural schematic diagram of the mold-free sand box for casting of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the second type of positioning device of the mold-free sand box for casting of the utility model.

[0021] In the figure: 1, bottom plate; 2, sand box; 3, trough body; 4, positioning hole; 5, fixed limit rail; 6, fixed plate; 7, lifting pile; 8, fixed groove; 9, positioning unit 9; 90101, rectangular pin; 90101, rectangular pin; 90102, pin cap; 90103, rectangular pin; 90201, fixed block body; 90202, fixed block boss; 90203, fastening bolt; 90204, slider; 10, grid grille; 11, fixed groove. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0023] like Figure 1 As shown, the utility model provides a mold-free sand box for casting, including a base plate 1, to which a plurality of sand boxes 2 are connected, each of which is provided with a plurality of positioning units 9, and the sand boxes 2 are connected to a track adjustment unit through the positioning units 9. According to the height of the workpiece, a corresponding number of sand boxes 2 are stacked and assembled.

[0024] like Figure 2 As shown, each sand box 2 is a hollow rectangle, and a slot body 3 is provided at the four corners of the side of each sand box 2, and a positioning hole 4 is provided at the four corners of the side of each sand box 2, and the positioning hole 4 corresponds to the corresponding slot body 3. A plurality of fixing grooves 11 are provided on the four sides of the upper surface of the sand box, and four blind holes corresponding to the positioning holes 4 are provided on the upper surface of the bottom plate 1, and a positioning pin is inserted in each blind hole, and the positioning pin passes through the corresponding positioning hole 4. The bottom plate is provided with a plurality of groups of positioning holes 4 to match sand boxes of different sizes. After the boxes are assembled, the positioning holes 4 can be used as connection and fastening holes, and the stacked sand boxes 2 are fastened with bolts to form a whole.

[0025] The track adjustment unit includes a plurality of fixed limit rails 5, each of which is in the shape of a long strip. A plurality of fixed grooves 8 are evenly distributed on the same side of each fixed limit rail 5, and each fixed groove 8 corresponds to a corresponding fixed groove 11. Two mutually parallel fixed limit rails 5 are fixedly connected to each of the four inner walls of the sand box 2, and one side of each fixed limit rail 5 provided with a fixed groove 8 is in contact with the inner wall of the sand box 2.

[0026] The track adjustment unit also includes several groups of fixed plates 6, each group of fixed plates 6 has a different length, and four slots are opened on two opposite sides of each group of fixed plates 6. The distance between the two slots on the same side of the fixed plate 6 corresponds to the distance between two parallel fixed limit rails 5. The fixed plate 6 is clamped on the fixed limit rail 5, and each fixed plate 6 has semicircular chamfers on the two sides with the slots. Therefore, when filling sand, the set fixed plates 6 can separate the space in the sand box 2, thereby reducing the use of sand. At the same time, the movable design of the fixed plate 6 can flexibly adapt to workpieces of different specifications.

[0027] like Figure 3-Figure 5 As shown, the positioning unit includes a first type of positioning device and a second type of positioning device.

[0028] The first type of positioning device includes a rectangular pin 90101, one end of which is fixedly connected to a pin cap 90102. The side of the pin cap 90102 is provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate 6, which can fix the fixing plate 6 at a certain angle. The rectangular pin 90101 passes through the corresponding fixing groove 8. When the position of the fixing plate 6 is adjusted, the first type of positioning device can be inserted into the corresponding fixing groove 8, and the semi-circular chamfer on the pin cap 90102 resists the fixing plate 6, thereby ensuring the stability of the fixing plate 6 after the position is adjusted.

[0029] The second type of positioning device includes a fixing block body 90201 with a threaded hole, a fixing block boss 90202 is fixedly connected to one side of the fixing block body 90201 which is perpendicular to the axis of the threaded hole, a fastening bolt 90203 is passed through the threaded hole, a slider 90204 is fixedly connected to one end of the fastening bolt 90203, and a circular arc groove matching the semi-circular chamfer of the fixing plate 6 is provided on the slider 90204, the fixing block boss 90202 is passed through the corresponding fixing groove 8, and the fixing block body 90201 is clamped in the corresponding fixing groove 11, which can realize fine adjustment of the position of the fixing plate 6.

[0030] A plurality of symmetrically arranged lifting piles 7 are fixedly connected to the outer side surface of each sand box 2 .

[0031] A grid-like grille 10 is fixedly connected to the inner side surface of each topmost flask 2 .

[0032] The working principle of the mold-free sand box for casting provided by the utility model is as follows: according to the height of the workpiece, a corresponding number of sand boxes 2 are stacked and assembled, and the two sand boxes 2 can be fixed through the positioning holes 4 on the sand box 2, and then the arrangement of the fixing plates 6 in the sand box 2 is adjusted according to the size of the workpiece, so that the sides of each fixing plate 6 fit the workpiece. Therefore, when filling sand, the set fixing plates 6 can separate the space in the sand box 2, thereby reducing the use of sand. At the same time, the movable design of the fixing plate 6 can flexibly adapt to workpieces of different specifications. When one end of the fixing plate 6 is close to the fixing groove 8, the first type of positioning device is used to fix the fixing plate 6. When there is a gap between one end of the fixing plate 6 and the fixing groove 8, the second type of positioning device is used to position and fasten the fixing plate 6 at a specific position through the extension and retraction of the fastening bolts 90203.

[0033] Example 1

[0034] like Figure 1 As shown, the mold-free flask for casting proposed in this embodiment includes a base plate 1, to which a plurality of flasks 2 are connected, each of which is provided with a plurality of positioning units 9, and the flasks 2 are connected to track adjustment units via the positioning units 9.

[0035] Example 2

[0036] like Figure 1-2 As shown, the mold-free sand box for casting proposed in this embodiment includes a bottom plate 1, and a plurality of sand boxes 2 are connected to the bottom plate 1. A plurality of positioning units 9 are provided in each sand box 2, and the sand box 2 is connected to a track adjustment unit through the positioning units 9. Each sand box 2 is a hollow rectangle, and a groove body 3 is provided at the four corners of the side of each sand box 2, and a positioning hole 4 is provided at the four corners of the side of each sand box 2, and the positioning hole 4 corresponds to the corresponding groove body 3. A plurality of fixing grooves 11 are provided on the four sides of the upper surface of the sand box, and four blind holes corresponding to the positioning holes 4 are provided on the upper surface of the bottom plate 1, and a positioning pin is inserted in each blind hole, and the positioning pin passes through the corresponding positioning hole 4. The track adjustment unit includes a plurality of fixed limit rails 5, each of which is in the shape of a long strip, and a plurality of fixed grooves 8 are evenly distributed on the same side of each fixed limit rail 5, and each fixed groove 8 corresponds to a corresponding fixed groove 11. Two mutually parallel fixed limit rails 5 are fixedly connected to each of the four inner walls of the sand box 2, and one side of each fixed limit rail 5 provided with the fixed groove 8 fits with the inner wall of the sand box 2. The track adjustment unit also includes a plurality of groups of fixed plates 6, each group of fixed plates 6 has a different length, and four card slots are provided on two opposite sides of each group of fixed plates 6, and the distance between the two card slots on the same side of the fixed plate 6 corresponds to the distance between the two mutually parallel fixed limit rails 5, and the fixed plate 6 is connected to the fixed limit rail 5, and each fixed plate 6 has semicircular chamfers on the two sides provided with the card slots.

[0037] Example 3

[0038] like Figure 1-5 As shown, the mold-free sand box for casting proposed in this embodiment includes a bottom plate 1, and a plurality of sand boxes 2 are connected to the bottom plate 1. A plurality of positioning units 9 are provided in each sand box 2, and the sand box 2 is connected to a track adjustment unit through the positioning units 9. Each sand box 2 is a hollow rectangle, and a groove body 3 is provided at the four corners of the side of each sand box 2, and a positioning hole 4 is provided at the four corners of the side of each sand box 2, and the positioning hole 4 corresponds to the corresponding groove body 3. A plurality of fixing grooves 11 are provided on the four sides of the upper surface of the sand box, and four blind holes corresponding to the positioning holes 4 are provided on the upper surface of the bottom plate 1, and a positioning pin is inserted in each blind hole, and the positioning pin passes through the corresponding positioning hole 4. The track adjustment unit includes a plurality of fixed limit rails 5, each of which is in the shape of a long strip, and a plurality of fixed grooves 8 are evenly distributed on the same side of each fixed limit rail 5, and each fixed groove 8 corresponds to a corresponding fixed groove 11. Two mutually parallel fixed limit rails 5 are fixedly connected to each of the four inner walls of the sand box 2, and one side of each fixed limit rail 5 provided with the fixed groove 8 fits with the inner wall of the sand box 2. The track adjustment unit also includes a plurality of groups of fixed plates 6, each group of fixed plates 6 has a different length, and four card slots are provided on two opposite sides of each group of fixed plates 6, and the distance between the two card slots on the same side of the fixed plate 6 corresponds to the distance between the two mutually parallel fixed limit rails 5, and the fixed plate 6 is connected to the fixed limit rail 5, and each fixed plate 6 has semicircular chamfers on the two sides provided with the card slots. The positioning unit includes a first type of positioning device and a second type of positioning device. The first type of positioning device includes a rectangular pin 90101, one end of which is fixedly connected to a pin cap 90102, the side of the pin cap 90102 is provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate 6, and the rectangular pin 90101 passes through the corresponding fixing groove 8. The second type of positioning device includes a fixing block body 90201 with a threaded hole, one side of the fixing block body 90201 perpendicular to the axis of the threaded hole is fixedly connected to a fixing block boss 90202, a fastening bolt 90203 is passed through the threaded hole, one end of the fastening bolt 90203 is fixedly connected to a slider 90204, the slider 90204 is provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate 6, the fixing block boss 90202 is passed through the corresponding fixing groove 8, and the fixing block body 90201 is clamped in the corresponding fixing groove 11.

[0039] Example 4

[0040] like Figure 1-5As shown, the mold-free sand box for casting proposed in this embodiment includes a bottom plate 1, and a plurality of sand boxes 2 are connected to the bottom plate 1. A plurality of positioning units 9 are provided in each sand box 2, and the sand box 2 is connected to a track adjustment unit through the positioning units 9. Each sand box 2 is a hollow rectangle, and a groove body 3 is provided at the four corners of the side of each sand box 2, and a positioning hole 4 is provided at the four corners of the side of each sand box 2, and the positioning hole 4 corresponds to the corresponding groove body 3. A plurality of fixing grooves 11 are provided on the four sides of the upper surface of the sand box, and four blind holes corresponding to the positioning holes 4 are provided on the upper surface of the bottom plate 1, and a positioning pin is inserted in each blind hole, and the positioning pin passes through the corresponding positioning hole 4. The track adjustment unit includes a plurality of fixed limit rails 5, each of which is in the shape of a long strip, and a plurality of fixed grooves 8 are evenly distributed on the same side of each fixed limit rail 5, and each fixed groove 8 corresponds to a corresponding fixed groove 11. Two mutually parallel fixed limit rails 5 are fixedly connected to each of the four inner walls of the sand box 2, and one side of each fixed limit rail 5 provided with the fixed groove 8 fits with the inner wall of the sand box 2. The track adjustment unit also includes a plurality of groups of fixed plates 6, each group of fixed plates 6 has a different length, and four card slots are provided on two opposite sides of each group of fixed plates 6, and the distance between the two card slots on the same side of the fixed plate 6 corresponds to the distance between the two mutually parallel fixed limit rails 5, and the fixed plate 6 is connected to the fixed limit rail 5, and each fixed plate 6 has semicircular chamfers on the two sides provided with the card slots. The positioning unit includes a first type of positioning device and a second type of positioning device. The first type of positioning device includes a rectangular pin 90101, one end of which is fixedly connected to a pin cap 90102, the side of the pin cap 90102 is provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate 6, and the rectangular pin 90101 passes through the corresponding fixing groove 8. The second type of positioning device includes a fixing block body 90201 with a threaded hole, a fixing block boss 90202 is fixedly connected to one side of the fixing block body 90201 perpendicular to the axis of the threaded hole, a fastening bolt 90203 is passed through the threaded hole, one end of the fastening bolt 90203 is fixedly connected to a slider 90204, the slider 90204 is provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate 6, the fixing block boss 90202 is passed through the corresponding fixing groove 8, and the fixing block body 90201 is clamped in the corresponding fixing groove 11. A plurality of symmetrically arranged lifting piles 7 are fixedly connected to the outer side of each sand box 2. A grid-like grille 10 is fixedly connected to the inner side surface of each topmost flask 2 .

Claims

1. A mold-free sand box for casting, characterized in that: It comprises a bottom plate (1), a plurality of sand boxes (2) are connected to the bottom plate (1), a plurality of positioning units (9) are arranged in each of the sand boxes (2), and the sand boxes (2) are connected to a track adjustment unit via the positioning units (9); Each of the sand boxes (2) is in the form of a hollow rectangle, and each of the sand boxes (2) has a groove body (3) at the four corners of the side surface, and each of the sand boxes (2) has a positioning hole (4) at the four corners of the side surface, and the positioning hole (4) corresponds to the corresponding groove body (3). A plurality of fixing grooves (11) are formed on the four sides of the upper surface of the sand box, and the upper surface of the bottom plate (1) has four blind holes corresponding to the positioning holes (4), and a positioning pin is inserted into each of the blind holes, and the positioning pin passes through the corresponding positioning hole (4); The track adjustment unit comprises a plurality of fixed limit rails (5), each of the fixed limit rails (5) is in the shape of a long strip, a plurality of fixed grooves (8) are evenly distributed on the same side of each of the fixed limit rails (5), each of the fixed grooves (8) corresponds to a corresponding fixed groove (11), and two mutually parallel fixed limit rails (5) are fixedly connected to each of the four inner walls of the sand box (2), and one side of each of the fixed limit rails (5) provided with the fixed groove (8) is in contact with the inner wall of the sand box (2).

2. The casting flask according to claim 1, characterized in that: The track adjustment unit further comprises a plurality of groups of fixing plates (6), each group of the fixing plates (6) having a different length, and each group of the fixing plates (6) having four slots on two opposite sides thereof, the distance between two slots on the same side of the fixing plate (6) corresponding to the distance between the two mutually parallel fixing limit rails (5), the fixing plates (6) being snap-connected to the fixing limit rails (5), and semicircular chamfers being provided on the two sides of each fixing plate (6) having the slots.

3. The casting flask according to claim 2, characterized in that: The positioning unit includes a first type of positioning device and a second type of positioning device.

4. The casting flask according to claim 3, characterized in that: The first type of positioning device comprises a rectangular pin (90101), one end of the rectangular pin (90101) being fixedly connected to a pin cap (90102), a side surface of the pin cap (90102) being provided with an arc-shaped groove matching the semi-circular chamfer of the fixing plate (6), and the rectangular pin (90101) passing through a corresponding fixing slot (8).

5. The casting flask according to claim 4, characterized in that: The second type of positioning device comprises a fixing block body (90201) having a threaded hole, a fixing block boss (90202) being fixedly connected to one side of the fixing block body (90201) which is perpendicular to the axis of the threaded hole, a fastening bolt (90203) being passed through the threaded hole, a slider (90204) being fixedly connected to one end of the fastening bolt (90203), a circular arc groove matching the semi-circular arc chamfer of the fixing plate (6) being formed on the slider (90204), the fixing block boss (90202) being passed through the corresponding fixing groove (8), and the fixing block body (90201) being snap-fitted into the corresponding fixing groove (11).

6. The casting flask according to claim 5, characterized in that: A plurality of symmetrically arranged lifting piles (7) are fixedly connected to the outer side surface of each sand box (2).

7. The casting flask according to claim 6, characterized in that: A grid-like grille (10) is fixedly connected to the inner side surface of each of the topmost sand boxes (2).

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