An automatic static pressure molding line sand tire structure for assisting mold removal

Abstract

The utility model discloses an automatic static pressure molding line sand tire structure for assisting mold release, comprising a fixed seat, two groups of hydraulic cylinders are installed on the top of the fixed seat, and the output shafts of the two groups of hydraulic cylinders are fixed to a punching box, while a limit frame is installed on the bottom of the punching box, and the punching seat is fixedly installed on the inner lower side of the punching box; a sand box is installed on the bottom of the punching box, and a limit seat is fixedly installed on the top of the sand box, and a limit groove is provided on the surface of the limit seat. The automatic static pressure molding line sand tire structure for assisting mold release has an internal space of the sand box divided by three groups of positioning flanges to form four groups of sand containing spaces, and can perform sand filling work when the sand box is layered, and can perform uniform sand filling work inside the sand box to ensure that the thickness of each sand inside the sand box is consistent, and can perform force sand pressing work inside the sand box, and can perform uniform sand pressing work on the outer side of the mold.

Description

Technical Field

[0001] The utility model relates to the field of static pressure sand boxes, in particular to an automatic static pressure molding line sand tire structure for assisting mold removal. Background Art

[0002] Static pressure molding is to preliminarily compact the molding sand through the pre-compacting effect of airflow, and then finally compact the molding sand through the hydraulic pressure head. The multi-contact pressure head is provided with pressure by hydraulic pressure, and the pressure is fixed, so it is called static pressure molding. In the process of making sand molds by static pressure molding machine, the molding machine adds molding sand into the sand box, and then compacts and demolds.

[0003] Regarding the patent of sand tire structure, after searching, the Chinese patent with authorization announcement number CN215237662U discloses an automatic static pressure molding line sand tire structure for auxiliary demolding; the article includes that the auxiliary demolding elastic component set can pre-assist the lower pipe sleeve casting model in the demolding direction during demolding, thereby effectively improving the demolding effect, reducing the difficulty of demolding, and making the operation simpler and more convenient.

[0004] When the second sand box moves downward, since the above-mentioned setting does not have a limiting and guiding structure when the second sand box moves, the second sand box is prone to tilt when it is raised or lowered, resulting in the inability to accurately press the first sand box and the second sand box, which is prone to misalignment; when filling the sand box with sand, it is easy to have local areas that are too thin or too thick, so that when the sand box is subjected to force, the pressure cannot be evenly transferred to the outside of the mold. Utility Model Content

[0005] The utility model aims to provide an automatic static pressure molding line sand tire structure for assisting mold removal, so as to solve the defects mentioned in the above background technology.

[0006] In order to achieve the above-mentioned purpose, an automatic static pressure molding line sand tire structure with auxiliary mold release is provided, including a fixed seat, two groups of hydraulic cylinders are installed on the top of the fixed seat, and the output shafts of the two groups of hydraulic cylinders are fixed to the punching box, and at the same time, a limit frame is installed at the bottom of the punching box, and the punching seat is fixedly installed on the lower inner side of the punching box; a sand box is installed at the bottom of the punching box, and a limit seat is fixedly installed on the top of the sand box, and at the same time, a limit groove is provided on the surface of the limit seat, and an upper positioning flange, a middle positioning flange and a lower positioning flange are fixedly arranged on the inner wall surface of the sand box from top to bottom.

[0007] Preferably, the size of the limit frame is adapted to the limit groove, and the limit frame is inserted into the limit groove, and the punching box and the sand box are positioned and molded by the limit frame and the limit groove.

[0008] Preferably, an accommodation space is provided inside the limiting seat, and the accommodation space is adapted to the size of the punching seat, and the punching seat moves downward and is inserted into the accommodation space.

[0009] Preferably, two sets of limit rods are fixedly installed on both sides of the bottom of the fixed seat, and upper guide seats are fixedly arranged on both sides of the stamping box. At the same time, the limit rods are inserted into the two sets of guide holes opened on the upper guide seat, and reset springs are installed on the two sets of limit rods.

[0010] Preferably, lower guide seats are installed on both sides of the top of the sand box, and limiting rods are inserted into the two groups of guide holes opened on the lower guide seats.

[0011] Preferably, the upper positioning flange, the middle positioning flange and the lower positioning flange arranged inside the sand box are arranged in parallel, and the spacing between two adjacent groups of positioning flanges is consistent.

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

[0013] The punching box and the sand box are positioned and closed by the limit frame and the limit groove, so that the punching box and the sand box can be closed accurately and avoid misalignment between the punching box and the sand box during closing.

[0014] The internal space of the sand box is divided into four groups of sand holding spaces by three groups of positioning flanges. When the sand box is layered, sand filling can be carried out. The inside of the sand box can be filled with sand evenly to ensure that the thickness of each sand inside the sand box is consistent. The sand can be pressed under force inside the sand box, and the outside of the mold can be pressed evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the structural sand box of the utility model;

[0017] Figure 3 The utility model structure Figure 2 Bottom view of

[0018] Figure 4 The utility model structure Figure 2 Top view of the .

[0019] Numbers in the figure: 1, fixed seat; 2, upper guide seat; 3, stamping box; 4, stamping seat; 5, limit frame; 6, limit rod; 7, return spring; 8, sand box; 81, limit seat; 82, upper positioning flange; 83, middle positioning flange; 84, lower positioning flange; 85, lower guide seat; 86, limit groove. DETAILED DESCRIPTION

[0020] See also Figure 1-4 The utility model provides an automatic static pressure molding line sand tire structure for auxiliary mold removal, including a fixed seat 1, two groups of hydraulic cylinders are installed on the top of the fixed seat 1, and the output shafts of the two groups of hydraulic cylinders are fixed to the punching box 3, and the bottom of the punching box 3 is installed with a limit frame 5, and the inner lower side of the punching box 3 is fixedly installed with a punching seat 4; a sand box 8 is installed at the bottom of the punching box 3, and a limit seat 81 is fixedly installed on the top of the sand box 8, and a limit groove 86 is provided on the surface of the limit seat 81, and an upper positioning flange 82, a middle positioning flange 83 and a lower positioning flange 84 are fixedly arranged on the inner wall surface of the sand box 8 from top to bottom.

[0021] Working principle: Fill the molding sand into the sand box 8 to ensure that the molding sand is evenly distributed and reaches a certain degree of compactness; then, place the mold in the sand box 8, and the shape of the mold corresponds to the shape of the product to be produced; the punch box 3 moves downward, so that the punch seat 4 evenly compacts the molding sand inside the sand box 8, and under the action of pressure, the molding sand tightly wraps the mold to form a cavity consistent with the shape of the mold; at this time, pour liquid metal into the cavity; as the metal cools and solidifies, a product with the shape of the mold will be obtained; finally, remove the pressure and take out the molded product.

[0022] As a preferred embodiment, the size of the limit frame 5 is adapted to the limit groove 86 , and the limit frame 5 is inserted into the inside of the limit groove 86 , and the punch box 3 and the sand box 8 are positioned and molded by the limit frame 5 and the limit groove 86 .

[0023] An accommodating space is provided inside the limiting seat 81 , and the accommodating space is adapted to the size of the punching seat 4 , and the punching seat 4 moves downward and is inserted into the accommodating space.

[0024] like Figure 1-4 As shown: the punching box 3 and the sand box 8 are positioned and molded by the limit frame 5 and the limit groove 86, so that the punching box 3 and the sand box 8 can be accurately molded and the misalignment between the punching box 3 and the sand box 8 is avoided during the mold closing.

[0025] As a preferred embodiment, two sets of limit rods 6 are fixedly installed on both sides of the bottom of the fixed seat 1, and the upper guide seat 2 is fixedly set on both sides of the stamping box 3. At the same time, the two sets of guide holes opened on the upper guide seat 2 are both inserted with the limit rods 6, and the two sets of limit rods 6 are installed with reset springs 7.

[0026] Lower guide seats 85 are installed on both sides of the top of the sand box 8, and the two groups of guide holes opened on the lower guide seats 85 are inserted with the limiting rods 6 inside.

[0027] When the punch box 3 and the sand box 8 are in the process of closing the mold, the upper guide seat 2 moves downward to compress the reset spring 7. When the punch box 3 and the sand box 8 are in the process of demolding, the compressed reset spring 7 can rebound to assist the punch box 3 and the sand box 8 in demolding.

[0028] As a preferred embodiment, the upper positioning flange 82, the middle positioning flange 83 and the lower positioning flange 84 arranged inside the sand box 8 are arranged in parallel, and the distances between two adjacent groups of positioning flanges are consistent.

[0029] The inner wall surface of the sand box 8 is fixedly provided with an upper positioning flange 82, a middle positioning flange 83 and a lower positioning flange 84 in sequence from top to bottom; the internal space of the sand box 8 is divided into four groups of sand containing spaces by three groups of positioning flanges, and the sand filling work can be carried out when the sand box 8 is layered. When the interior of one group of containing spaces is flattened, the sand filling work can be carried out on the other group of containing spaces above it. The interior of the sand box 8 can be filled with sand evenly to ensure that the thickness of each sand in the sand box 8 is consistent. The sand pressing work can be carried out inside the sand box 8 under stress, and the sand pressing work can be carried out evenly on the outside of the mold.

Claims

1. An automatic static pressure molding line sand tire structure for auxiliary mold release, comprising a fixed seat (1), characterized in that: Two groups of hydraulic cylinders are installed on the top of the fixed seat (1), and the output shafts of the two groups of hydraulic cylinders are fixed to the punching box (3). At the same time, a limit frame (5) is installed on the bottom of the punching box (3), and the punching seat (4) is fixedly installed on the lower side of the inner part of the punching box (3); a sand box (8) is installed on the bottom of the punching box (3), and a limit seat (81) is fixedly installed on the top of the sand box (8). At the same time, a limit groove (86) is provided on the surface of the limit seat (81), and an upper positioning flange (82), a middle positioning flange (83) and a lower positioning flange (84) are fixedly arranged on the inner wall surface of the sand box (8) in sequence from top to bottom.

2. The sand tire structure of an automatic static pressure molding line for auxiliary mold release according to claim 1, characterized in that: The size of the limit frame (5) is adapted to the limit groove (86), and the limit frame (5) is inserted into the inside of the limit groove (86). At the same time, the punch box (3) and the sand box (8) are positioned and molded through the limit frame (5) and the limit groove (86).

3. The sand tire structure of an automatic static pressure molding line with auxiliary mold release according to claim 1, characterized in that: The limiting seat (81) has an accommodation space inside, and the accommodation space is adapted to the size of the punching seat (4), and the punching seat (4) moves downward and is inserted into the accommodation space.

4. The sand tire structure of the automatic static pressure molding line for auxiliary mold release according to claim 1 is characterized in that: Two groups of limit rods (6) are fixedly installed on both sides of the bottom of the fixed seat (1), and the upper guide seat (2) is fixedly arranged on both sides of the stamping box (3). At the same time, the limit rods (6) are inserted into the two groups of guide holes opened on the upper guide seat (2), and reset springs (7) are installed on the two groups of limit rods (6).

5. The sand tire structure of the automatic static pressure molding line with auxiliary mold release according to claim 1 is characterized by: Lower guide seats (85) are installed on both sides of the top of the sand box (8), and the two groups of guide holes opened on the lower guide seat (85) are inserted with limit rods (6) inside.

6. The sand tire structure of the automatic static pressure molding line with auxiliary mold release according to claim 1 is characterized by: The upper positioning flange (82), the middle positioning flange (83) and the lower positioning flange (84) arranged inside the sand box (8) are arranged in parallel, and the spacing between two adjacent groups of positioning flanges is consistent.

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