A sand box for metal casting

Abstract

The utility model relates to foundry sand box technical field, specifically disclose a sand box for metal casting, including sand box, the both sides of sand box are provided with control handle, the top of control handle is connected with the straightening lever, the both sides of the inner wall close to the bottom in the middle part of sand box are provided with the embedded groove, the middle part of embedded groove is connected with the positioning assembly, and the positioning assembly one end swings along the shaft, and the side wall of sand box is connected with the control wheel, and the control wheel is pasted with the positioning assembly. Through the positioning assembly that the both sides of sand box inner wall set to the center deflection, thereby contacting the side wall of the casting and leaning, then through the deflection angle of observation positioning assembly, the position of casting placement is obtained, to ensure that the casting placement in two sand boxes can correspond, and the model groove will not have error when overlapping.

Description

Technical Field

[0001] This utility model relates to the field of casting sand box technology, and more specifically, to a sand box for metal casting. Background Technology

[0002] A casting sand box is a groove formed in a sand box to create the shape of a casting. Two sand boxes are then overlapped to form a complete casting cavity. After pouring molten casting liquid into the cavity and cooling, the casting is formed.

[0003] Existing casting sand boxes use two separate molds to form grooves for two parts of the casting, which are then overlapped to form a complete casting pattern cavity. However, when placing the casting in the sand box and pouring molding sand to form the grooves, the position of the casting in the sand box cannot be precisely controlled. This results in errors in the placement of the casting in the two sand boxes, leading to misalignment when the formed casting grooves overlap. Utility Model Content

[0004] The purpose of this utility model is to provide a sand box for metal casting, which solves the problem that the placement position of the casting in the upper and lower sand boxes cannot be precisely controlled and aligned, resulting in the casting grooves not being aligned when the upper and lower sand boxes are overlapped and aligned.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a sand box for metal casting, including a sand box, control handles on both sides of the sand box, a straightening rod connected to the top of the control handles, fitting grooves on both sides of the inner wall near the bottom of the middle of the sand box, a positioning component connected to the middle of the fitting groove, one end of the positioning component swinging along the axis, and a control wheel connected to the side wall of the sand box, the control wheel fitting with the positioning component.

[0007] Preferably, the positioning component includes a deflection rod and a transmission gear block, the deflection rod being connected in a fitting groove, and the transmission gear block being disposed on one end sidewall of the deflection rod.

[0008] Preferably, the deflection rod is connected to the fitting groove via a hinge shaft at one end.

[0009] Preferably, the hinge shafts at one end of the deflection rods on both sides of the inner wall of the middle part of the sand box are set in opposite directions.

[0010] Preferably, the transmission gear block is only set on the side wall of the end where the deflection rod connects to the hinge shaft.

[0011] Preferably, the protruding part of the control wheel is on the surface of the sand box, and one side of the control wheel meshes with the transmission tooth block on the side wall of one end of the deflection rod.

[0012] Preferably, the control wheel also includes a scale, which is set on the top surface of the control wheel.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0014] 1. The positioning components on both sides of the inner wall of the sand box are deflected towards the center, thereby contacting and abutting against the side wall of the casting. The position of the casting is determined by observing the deflection angle of the positioning components, so as to ensure that the castings in the two sand boxes are placed in a corresponding manner and that the model slots will not have errors when they overlap. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a top view cross-sectional structural diagram of the sand box of this utility model.

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0018] Attached reference numerals: 1-sandbox, 101-control grip, 102-correction rod, 103-fitting groove, 1031-deflection rod, 1032-transmission gear block, 2-control wheel, 201-scale. Detailed Implementation

[0019] The following is combined with Figures 1 to 3 This utility model will be described in detail.

[0020] A sand box for metal casting includes a sand box 1. Control handles 101 are provided on both sides of the sand box 1. A straightening rod 102 is connected to the top of the control handles 101. Fitting grooves 103 are provided on both sides of the inner wall near the bottom of the middle of the sand box 1. A positioning component is connected to the middle of the fitting groove 103. One end of the positioning component swings along an axis. A control wheel 2 is connected to the side wall of the sand box 1. The control wheel 2 is in contact with the positioning component.

[0021] First, place the molded casting into sand box 1, then pour molding sand into sand box 1 to fill and compact it, cover the casting, and then remove the casting. This will leave a groove in the core sand shaped like the casting. Place two parts of the casting into the upper and lower sand boxes 1 respectively, and finally overlap them so that grooves in the upper and lower sand boxes 1 are left in the shape of the casting. Then pour in casting liquid to cool and shape the casting.

[0022] Furthermore, the deflection rod 1031 is connected to the fitting groove 103 via a hinge shaft at one end. The hinge shafts at one end of the deflection rod 1031 on both sides of the inner wall of the middle part of the sand box 1 are arranged oppositely. The transmission gear block 1032 is only provided on the side wall at the end of the deflection rod 1031 connected to the hinge shaft. The protruding part of the control wheel 2 is on the surface of the sand box 1. One side of the control wheel 2 meshes with the transmission gear block 1032 on the side wall at one end of the deflection rod 1031. The control wheel 2 also includes a scale 201, which is provided on the top surface of the control wheel 2. The positioning assembly includes the deflection rod 1031 and the transmission gear block 1032. The deflection rod 1031 is connected to the fitting groove 103, and the transmission gear block 1032 is provided on the side wall at one end of the deflection rod 1031.

[0023] The following is a detailed implementation process of this utility model: First, the casting after mold separation is placed in the sand box 1. Then, molding sand is poured into the sand box 1 for filling and compaction. The placed casting is then covered. After the casting is removed, a groove in the shape of the casting will be left in the core sand. Two parts of the casting are placed in the upper and lower sand boxes 1 respectively. Finally, they are overlapped so that a groove in the shape of the casting will be left in the upper and lower sand boxes 1. Then, casting liquid is poured in to cool and shape the casting.

[0024] After the casting is placed into the sand box 1, the control wheel 2 protruding from the side wall of the sand box 1 is rotated. The rotation of the control wheel 2 drives the meshing transmission gear block 1032 to rotate as well. The transmission gear block 1032 is set on the side wall where the deflection rod 1031 has a hinge shaft at one end. The deflection rod 1031 rotates along the hinge shaft at one end, causing the entire deflection rod 1031 to deflect towards the center of the sand box 1 until it touches the placed casting. At the same time, the deflection rod 1031 connected to the opposite hinge shaft on the other side of the sand box 1 is also controlled to deflect in the same way, deflecting towards the center from another direction to position the casting. The specific angle of rotation is known through the scale 201 on the control wheel 2. This allows the castings in the two sand boxes 1 to determine whether their placement positions correspond based on the deflection angle of the deflection rod 1031, preventing misalignment of the castings in the two sand boxes 1 and causing errors in the model slot when the two sand boxes overlap.

Claims

1. A sand box for metal casting, comprising a sand box (1), two sides of the sand box (1) are provided with a control handle (101), the top of the control handle (101) is connected with a straightening rod (102), characterized in that, The sand box (1) has fitting grooves (103) on both sides of the inner wall near the bottom in the middle. A positioning component is connected to the middle of the fitting groove (103). One end of the positioning component swings along the axis. A control wheel (2) is connected to the side wall of the sand box (1). The control wheel (2) is in contact with the positioning component.

2. A sand box for metal casting according to claim 1, characterized in that the positioning component includes a deflection rod (1031) and a transmission gear block (1032), the deflection rod (1031) is connected in a fitting groove (103), and the transmission gear block (1032) is disposed on one end sidewall of the deflection rod (1031).

3. A sand box for metal casting according to claim 2, characterized in that the deflection rod (1031) is connected to the fitting groove (103) by a hinge shaft at one end.

4. A metal casting sand box according to claim 2, characterized in that the deflection rods (1031) on both sides of the inner wall of the middle part of the sand box (1) are hinged at opposite ends.

5. A sand box for metal casting according to claim 2, characterized in that the transmission gear block (1032) is only provided on the side wall of the end of the deflection rod (1031) connecting the hinge shaft.

6. A metal casting sand box according to claim 1, characterized in that the protruding part of the control wheel (2) is on the surface of the sand box (1), and one side of the control wheel (2) meshes with the transmission tooth block (1032) on one side wall of the deflection rod (1031).

7. A sand box for metal casting according to claim 1, characterized in that the control wheel (2) further includes a scale (201) which is disposed on the top surface of the control wheel (2).

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