Auxiliary demolding equipment for foam mold

Abstract

The utility model relates to the technical field of automobile part casting, and discloses an auxiliary demoulding device for a foam mould, which comprises a cabinet body, the inner bottom of the cabinet body is fixedly connected with a motor and a bidirectional screw rod in sequence, and the end face of the inner bottom of the cabinet body is provided with a demoulding assembly. According to the auxiliary demolding equipment for the foam mold, the four sets of abutting blocks can stably lift the bottom plate, the movement stability of the bottom plate is improved, the protective sleeve prevents quartz sand from falling off uncontrollably, the quartz sand can only be discharged through the inclined plate, a casting can be taken out at the moment, the quartz sand is prevented from being deposited at the bottom of the lower box through the bottom plate capable of being lifted, and the casting quality is improved. And by arranging the multiple sets of grooves, the gravity center of the abutting block is lower than the connecting position of the abutting block and the movable rod, then the end, close to the grooves, of the abutting block is located on the upper portion all the time, the friction coefficient of the abutting block and the bottom end face of the bottom plate can be increased through the grooves, and then the contact stability of the abutting block and the bottom plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts casting, in particular to auxiliary demoulding equipment for foam molds. Background Art

[0002] Lost foam casting is a new casting method. It uses a foam model to simulate the shape of the casting and combines it with the model into a model cluster. Then, a refractory coating is sprayed on the surface of the model. After drying, the model cluster is buried in dry quartz sand and the shape is trimmed by vibration molding. On this basis, liquid metal is poured into the model using negative pressure. After the metal solidifies, the model will vaporize and disappear, and the casting will be formed.

[0003] In the existing lost foam casting process, one common method for removing the produced casting from the quartz sand bed is to plane the quartz sand and remove the casting therein. Another method is to use a ejector pin arranged under the quartz sand bed to push the demoulded casting out of the sand pile.

[0004] However, during the actual use of the above equipment, no matter it is planing the quartz sand or ejecting it with an ejector, there is still a lot of quartz sand accumulated in the lower box. The large amount of gravel accumulation reduces the cleaning efficiency of the lower box when it is used next time and increases the risk of device contamination. In view of this, we proposed an auxiliary demolding device for foam molds. Utility Model Content

[0005] The utility model aims to provide an auxiliary demoulding device for a foam mold to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: an auxiliary demoulding device for a foam mold, comprising a cabinet, the inner bottom of the cabinet is fixedly connected to a motor, the output end of the motor is fixedly connected to a bidirectional screw, the side arm of the bidirectional screw is threadedly connected to a lower box, the side wall of the lower box is fixedly connected to a protective sleeve, and the inner bottom end surface of the cabinet is provided with a demoulding component, and the demoulding component includes:

[0007] A movable rod, wherein the inner bottom of the cabinet is fixedly connected with a mounting seat, the mounting seat is hinged to one end of the movable rod, and the end of the movable rod away from the mounting seat is rotatably connected to the guide roller;

[0008] An abutment block, wherein one end of the movable rod away from the mounting seat is rotatably connected to the abutment block;

[0009] A limiting plate, wherein the side wall of the lower box is fixedly connected with one end of a connecting rod, and the other end of the connecting rod is fixedly connected with the limiting plate;

[0010] The bottom plate is sleeved on the inner wall of the lower box, and the side wall of the bottom plate abuts against the inner wall of the lower box.

[0011] Preferably, a groove is formed on the top end surface of the abutment block.

[0012] Preferably, the side wall of the bidirectional screw is threadedly connected to an upper box, and the top end surface of the upper box is fixedly connected to a feed hopper, through which molten metal is poured into the upper box and the lower box.

[0013] Preferably, a guide rod is fixedly connected to the inner bottom end surface of the cabinet, and the side walls of the guide rod are sleeved with the upper box and the lower box, thereby preventing the upper box and the lower box from rotating.

[0014] Preferably, the side wall of the lower box is fixedly connected with an inclined plate, and the quartz sand is discharged from the lower box through the inclined plate.

[0015] Preferably, the number of the grooves is arranged in several groups, and the grooves in the several groups are arranged at equal intervals on the top of the abutment block.

[0016] Compared with the prior art, the utility model provides an auxiliary demoulding device for a foam mold, which has the following beneficial effects:

[0017] 1. The auxiliary demoulding equipment for the foam mold is provided with connecting rods, limit plates, bottom plates, mounting seats, movable rods, guide rollers and abutment blocks. Four groups of abutment blocks can lift the bottom plate steadily to improve the stability of the bottom plate movement. The protective sleeve prevents the quartz sand from falling uncontrollably, so that the quartz sand can only be discharged through the inclined plate. At this time, the casting can be taken out, and the quartz sand can be prevented from being deposited on the bottom of the lower box through the liftable bottom plate, thereby reducing the risk of device contamination.

[0018] 2. The auxiliary demoulding equipment for the foam mold is provided with several groups of grooves so that the center of gravity of the abutment block is lower than the connection between the abutment block and the movable rod, so that the end of the abutment block close to the groove is always located at the top. The groove can increase the friction coefficient between the abutment block and the bottom end surface of the bottom plate, thereby improving the contact stability between the abutment block and the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model structure without the box body;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower box of the utility model;

[0022] Figure 4 Practical Figure 3 Schematic diagram of the structure of area A.

[0023] In the figure: 1. cabinet; 2. motor; 3. bidirectional screw; 4. guide rod; 5. upper box; 6. feed hopper; 7. lower box; 8. protective cover; 9. inclined plate; 10. connecting rod; 11. limit plate; 12. bottom plate; 13. mounting seat; 14. movable rod; 15. guide roller; 16. abutment block; 17. groove. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: an auxiliary demoulding device for a foam mold, comprising a cabinet 1, the inner bottom of the cabinet 1 is fixedly connected to a motor 2, the output end of the motor 2 is fixedly connected to a bidirectional screw rod 3, the side wall of the bidirectional screw rod 3 is threadedly connected to an upper box 5, the top end face of the upper box 5 is fixedly connected to a feed hopper 6, and molten metal is poured into the upper box 5 and the lower box 7 through the feed hopper 6, the side arm of the bidirectional screw rod 3 is threadedly connected to the lower box 7, the side wall of the lower box 7 is fixedly connected to a protective sleeve 8, the inner bottom end face of the cabinet 1 is fixedly connected to a guide rod 4, the side wall of the guide rod 4 is sleeved with the upper box 5 and the lower box 7, thereby preventing the upper box 5 and the lower box 7 from rotating, and the inner bottom end face of the cabinet 1 is provided with a demoulding assembly, the demoulding assembly includes a connecting rod 10, a limit plate 11, a bottom plate 12, a mounting seat 13, a movable rod 14, a guide roller 15 and an abutment block 16.

[0025] In one embodiment of the utility model, the side wall of the lower box 7 is fixedly connected with an inclined plate 9, and quartz sand is discharged from the lower box 7 through the inclined plate 9. The inner bottom of the cabinet 1 is fixedly connected with a mounting seat 13, and the mounting seat 13 is hinged to one end of a movable rod 14. The end of the movable rod 14 away from the mounting seat 13 is rotatably connected to a guide roller 15, and the end of the movable rod 14 away from the mounting seat 13 is rotatably connected to an abutment block 16. The side wall of the lower box 7 is fixedly connected with one end of a connecting rod 10, and the other end of the connecting rod 10 is fixedly connected to a limit plate 11. The inner wall of the lower box 7 is sleeved with a bottom plate 12, and the side wall of the bottom plate 12 abuts against the inner wall of the lower box 7. A protrusion is provided on the bottom end surface of the bottom plate 12.

[0026] The motor 2 rotates, driving the bidirectional screw rod 3 to rotate, thereby causing the upper mold to move upward and the lower mold to move downward. The downward movement of the lower mold causes the demoulding assembly to move upward relatively, and the movable rod 14 moves upward so that the limit plate 11 guides the movable rod 14, and the movable rod 14 moves to both sides, and then the guide roller 15 abuts against the bottom end surface of the bottom plate 12, and the guide roller 15 moves to both sides until it abuts against the protrusion, and the abutment block 16 abuts against the bottom end surface of the bottom plate 12, thereby lifting the bottom plate 12, and pushing the quartz sand and the casting in the lower box 7 out of the lower box 7. The bottom plate 12 can be lifted smoothly by four groups of abutment blocks 16 to improve the stability of the movement of the bottom plate 12, and the protective cover 8 prevents the quartz sand from falling uncontrollably, so that the quartz sand can only be discharged through the inclined plate 9. At this time, the casting can be taken out, and the quartz sand can be prevented from being deposited on the bottom of the lower box 7 through the liftable bottom plate 12, thereby reducing the risk of device contamination.

[0027] In addition, in order to further improve the stability of the abutment block 16, a groove 17 is opened on the top end surface of the abutment block 16, and the number of grooves 17 is set in several groups. Several groups of grooves 17 are evenly spaced and arranged at the top of the abutment block 16, so that the center of gravity of the abutment block 16 is lower than the connection between the abutment block 16 and the movable rod 14, so that the end of the abutment block 16 close to the groove 17 is always located at the top. The groove 17 can increase the friction coefficient between the abutment block 16 and the bottom end surface of the base plate 12, thereby improving the stability of the contact between the abutment block 16 and the base plate 12.

[0028] In the utility model, when in use, the lost foam casting process is the prior art, so it is not described here in detail. The motor 2 rotates, driving the bidirectional screw rod 3 to rotate, thereby causing the upper mold to move upward and the lower mold to move downward. The downward movement of the lower mold causes the demoulding assembly to move upward relatively, and the movable rod 14 moves upward so that the limit plate 11 guides the movable rod 14, and the movable rod 14 moves to both sides, and then the guide roller 15 abuts against the bottom end surface of the bottom plate 12, and the guide roller 15 moves to both sides until it abuts against the protrusion, and the abutment block 16 abuts against the bottom end surface of the bottom plate 12, thereby lifting the bottom plate 12, and the quartz sand and the casting in the lower box 7 are ejected from the lower box 7, Four groups of abutment blocks 16 can lift the bottom plate 12 smoothly, thereby improving the stability of the movement of the bottom plate 12. The protective sleeve 8 prevents the quartz sand from falling uncontrollably, so that the quartz sand can only be discharged through the inclined plate 9. At this time, the casting can be taken out, and the quartz sand can be prevented from being deposited on the bottom of the lower box 7 through the liftable bottom plate 12. Furthermore, the groove 17 makes the center of gravity of the abutment block 16 lower than the connection between the abutment block 16 and the movable rod 14, so that the end of the abutment block 16 close to the groove 17 is always located at the top. The groove 17 can increase the friction coefficient between the abutment block 16 and the bottom end surface of the bottom plate 12, thereby improving the stability of the contact between the abutment block 16 and the bottom plate 12.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An auxiliary demoulding device for a foam mold, comprising a cabinet (1), characterized in that: The inner bottom of the cabinet (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a bidirectional screw rod (3), the side arm of the bidirectional screw rod (3) is threadedly connected to a lower box (7), the side wall of the lower box (7) is fixedly connected to a protective sleeve (8), and the inner bottom end surface of the cabinet (1) is provided with a demoulding component, and the demoulding component comprises: A movable rod (14), the inner bottom of the cabinet (1) is fixedly connected to a mounting seat (13), the mounting seat (13) is hinged to one end of the movable rod (14), and one end of the movable rod (14) away from the mounting seat (13) is rotatably connected to a guide roller (15); An abutment block (16), one end of the movable rod (14) away from the mounting seat (13) is rotatably connected to the abutment block (16); A limiting plate (11), one end of a connecting rod (10) is fixedly connected to the side wall of the lower box (7), and the other end of the connecting rod (10) is fixedly connected to the limiting plate (11); A bottom plate (12), the inner wall of the lower box (7) is sleeved with the bottom plate (12), and the side wall of the bottom plate (12) abuts against the inner wall of the lower box (7).

2. The auxiliary demoulding device for a foam mold according to claim 1, characterized in that: The top end surface of the abutment block (16) is provided with a groove (17).

3. The auxiliary demoulding device for a foam mold according to claim 1, characterized in that: The side wall of the bidirectional screw rod (3) is threadedly connected to an upper box (5), and the top end surface of the upper box (5) is fixedly connected to a feed hopper (6).

4. The auxiliary demoulding device for a foam mold according to claim 1, characterized in that: The inner bottom end surface of the cabinet (1) is fixedly connected with a guide rod (4), and the side wall of the guide rod (4) is sleeved with the upper box (5) and the lower box (7).

5. The auxiliary demoulding device for a foam mold according to claim 1, characterized in that: The side wall of the lower box (7) is fixedly connected with an inclined plate (9).

6. The auxiliary demoulding device for a foam mold according to claim 2, characterized in that: The number of the grooves (17) is arranged in a plurality of groups, and the plurality of groups of the grooves (17) are arranged at equal intervals on the top of the abutment block (16).

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