Nodular cast iron crankshaft casting equipment

Abstract

The utility model provides nodular cast iron crankshaft casting equipment which comprises a base, a lower die fixedly arranged at the top end of the base, a middle die arranged at the top end of the lower die and an upper die arranged at the top end of the middle die, the middle die is movably arranged at the top end of the lower die through embedding of a limiting hole and a groove, and a vibration motor is fixedly arranged at the top end of the base. When the nodular cast iron crankshaft casting equipment is used, a crankshaft is left in the middle mold through the mold core in the middle mold, the crankshaft is easily jacked up to leave the middle mold, the crankshaft is helped to be separated from the casting equipment, the vibration motor drives the equipment to integrally vibrate, bubbles cannot occur in the crankshaft forming process, and the service life of the crankshaft is prolonged. The fixing columns are connected and fixed with the upper mold, so that the upper mold is not loosened with a lower part in the vibration process, the vibration amplitudes of the upper mold and the lower mold are consistent, the situation that raw materials in a mold vibration mold core are not uniformly distributed is avoided, the heat insulation block and the bottom block insulate heat to protect the motor, and the service life of the vibration motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of crankshaft processing, in particular to a casting device for nodular cast iron crankshafts. Background Technique

[0002] Nodular cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used in casting some parts with complex forces, high requirements for strength, toughness, and wear resistance. Nodular cast iron has rapidly developed into the second most widely used cast iron material after gray cast iron. The crankshaft is the main rotating part of the engine. After installing the connecting rod, it can convert the up-and-down reciprocating motion of the connecting rod into a cyclic rotary motion, and it is an important part of the engine. During the casting process of nodular cast iron crankshafts, it is likely to get stuck in the mold and be difficult to remove after cooling, especially when the crankshaft has burrs, the removal difficulty increases. Content of the Utility Model

[0003] The utility model provides a casting device for nodular cast iron crankshafts to solve the technical problems existing in the above background technique.

[0004] The purpose and effect of a casting device for nodular cast iron crankshafts of the utility model are achieved by the following specific technical means: including a base, a lower mold fixedly arranged at the top of the base, a middle mold arranged at the top of the lower mold, and an upper mold arranged at the top of the middle mold:

[0005] The middle mold is movably arranged at the top of the lower mold through the engagement of a limiting hole and a groove, and includes a helping-to-disengage structure arranged inside the middle mold and a limiting structure arranged inside the middle mold;

[0006] A vibration motor is fixedly arranged at the top of the base, and includes a vibration structure arranged at the top of the base and a heat insulation protection structure arranged at the top of the vibration motor.

[0007] Preferably, the helping-to-disengage structure of the middle mold includes:

[0008] A middle mold core is arranged inside the middle mold;

[0009] A transverse block is arranged inside the middle mold core;

[0010] A through groove is arranged between the transverse blocks inside the middle mold core;

[0011] An upper mold core is arranged inside the upper mold;

[0012] A lower mold core is arranged inside the lower mold;

[0013] The through grooves are arranged in an equidistant straight line, the depth dimension of the through grooves is larger than the depth dimension of the transverse blocks, and the position and internal dimension of the through grooves are adapted to the position and internal dimension of the lower mold core.

[0014] Preferably, the limiting structure of the middle mold includes:

[0015] Limiting holes are arranged inside the upper mold;

[0016] Limiting columns are fixedly arranged at the top end of the lower mold;

[0017] The limiting holes penetrate through the top and bottom ends of the middle mold, and the positions and sizes of the limiting holes are adapted to the positions and sizes of the limiting columns.

[0018] Preferably, the heat insulation and protection structure of the vibration motor includes:

[0019] Heat insulation blocks are fixedly arranged at the top end of the vibration motor;

[0020] Bottom blocks are fixedly arranged on both sides of the vibration motor at the top end of the base;

[0021] The top end of the bottom block is fixedly connected to the bottom end of the heat insulation block, and the materials of the bottom block and the heat insulation block are both heat insulation and refractory materials.

[0022] Preferably, the heat insulation and protection structure of the vibration motor includes:

[0023] Heat insulation blocks are fixedly arranged at the top end of the vibration motor;

[0024] Bottom blocks are fixedly arranged on both sides of the vibration motor at the top end of the base;

[0025] The top end of the bottom block is fixedly connected to the bottom end of the heat insulation block, and the bottom block and the heat insulation

[0026] block materials are both heat insulation and refractory materials.

[0027] Preferably, a feed pipe is fixedly inlaid on the upper mold, and the bottom end of the feed pipe is communicated with the upper die core.

[0028] Preferably, mounting buckles are fixedly arranged on both sides of the upper mold, the middle mold and the lower mold.

[0029] Preferably, mounting bolts are respectively arranged at the four corner positions of the top end of the base.

[0030] Beneficial effects:

[0031] 1. By setting up a helping detachment structure and a limiting structure, the upper mold, the middle mold and the lower mold are fitted together through the corresponding fitting of the limiting posts and the limiting holes, fixed in position by the mounting buckles, and raw materials are added into the mold through the feed pipe. After cooling and forming, the mounting buckles are opened, and the upper mold and the middle mold are taken out. The upper mold core is in the shape of the upper half of the crankshaft, and the middle mold core and the lower mold core together are in the shape of the lower half of the crankshaft. The setting of the cross block keeps the crankshaft inside the middle mold, and the setting of the through groove makes it easy to lift the crankshaft away from the middle mold, helping the crankshaft to be detached from the casting equipment.

[0032] 2. By setting up a vibration structure and a heat insulation protection structure, when the power supply of the wire is connected and raw materials are added into the feed pipe, the vibration motor is started. The motor is connected to the heat insulation block and the base, driving the whole equipment to vibrate so that no bubbles will appear during the forming process of the crankshaft. The fixing post connects and fixes the upper mold, so that the upper mold will not become loose from the lower components during the vibration process, and the vibration amplitude of the upper mold and the lower mold is the same, preventing uneven distribution of raw materials inside the mold core due to mold vibration. The vibration motor is located inside the heat insulation block and the bottom block, which insulates and protects the motor itself and increases the service life of the vibration motor. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0034] Figure 2 It is a schematic diagram of the upper mold structure of the present utility model.

[0035] Figure 3 It is a schematic diagram of the middle mold structure of the present utility model.

[0036] Figure 4 It is a schematic diagram of the lower mold structure of the present utility model;

[0037] Figure 5 It is a schematic diagram of the vibration motor structure of the present utility model.

[0038] Figures 1-5 Among them, the corresponding relationship between the component names and the drawing reference numerals is as follows:

[0039] 1. Base; 2. Bottom block; 3. Lower mold; 301. Lower mold core; 4. Middle mold; 401. Middle mold core; 402. Cross block; 403. Through groove; 5. Upper mold; 501. Upper mold core; 6. Mounting buckle; 7. Feed pipe; 8. Fixing post; 9. Heat insulation block; 10. Mounting bolt; 11. Limiting post; 12. Limiting hole; 13. Vibration motor. Detailed Embodiment

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0041] Embodiment 1

[0042] As shown in Figure 1 and Figure 2 and Figure 3 and Figure 4 : It includes a base 1, a lower mold 3 fixedly arranged at the top of the base 1, a middle mold 4 arranged at the top of the lower mold 3, and an upper mold 5 arranged at the top of the middle mold 4. The middle mold 4 is movably arranged at the top of the lower mold 3 through the engagement of a limit hole 12 and a groove, and includes a separation assisting structure arranged inside the middle mold 4 and a limit structure arranged inside the middle mold 4; a vibration motor 13 is fixedly arranged at the top of the base 1, and includes a vibration structure arranged at the top of the base 1 and a heat insulation protection structure arranged at the top of the vibration motor 13.

[0043] The separation assisting structure of the middle mold 4 includes: a middle mold core 401 arranged inside the middle mold 4, a cross block 402 arranged inside the middle mold core 401, a through groove 403 penetrating between the cross blocks 402 inside the middle mold core 401, an upper mold core 501 arranged inside the upper mold 5, a lower mold core 301 arranged inside the lower mold 3. The through grooves 403 are arranged in an equidistant straight line, the depth dimension of the through groove 403 is larger than the depth dimension of the cross block 402, the position and internal dimension of the through groove 403 are adapted to the position and internal dimension of the lower mold core 301, the upper mold core 501 is in the shape of the upper half of a crankshaft, and the middle mold core 401 and the lower mold core 301 together are in the shape of the lower half of a crankshaft.

[0044] Furthermore, the limit structure of the middle mold 4 includes: a limit hole 12 arranged inside the upper mold 5, and a limit post 11 fixedly arranged at the top of the lower mold 3; the limit hole 12 penetrates through the top and bottom of the middle mold 4, the position and dimension of the limit hole 12 are adapted to the position and dimension of the limit post 11, and the upper mold 5, the middle mold 4 and the lower mold 3 are engaged together through the correspondence of the limit post 11 and the limit hole 12.

[0045] Embodiment 2

[0046] As shown in Figure 1 and Figure 5As shown: The vibration structure of the vibration motor 13 includes: the end of the fixed column 8 fixedly arranged on the top of the base 1, the heat insulation block 9 fixedly arranged on the top of the vibration motor 13. The fixed column 8 is V-shaped. The inner side of the top end of the fixed column 8 is fixedly connected to the outer wall of the top corner of the upper mold 5 by bolts. The internal size of the fixed column 8 is adapted to the size of the upper mold 5. The top end of the heat insulation block 9 is fixedly connected to the bottom end of the lower mold 3. During the process of adding raw materials into the feed pipe 7, the vibration motor 13 is started. The motor is connected to the heat insulation block 9 and the base 1, driving the overall vibration of the equipment so that no bubbles will appear during the forming process of the crankshaft. The fixed column 8 connects and fixes the upper mold 5, so that the upper mold 5 will not be loosened from the connection with the lower components during the vibration process, and the vibration amplitude of the upper mold 5 and the lower mold 3 is the same, and the situation that the raw materials inside the mold core are unevenly distributed due to the vibration of the mold will not occur.

[0047] Furthermore, the heat insulation protection structure of the vibration motor 13 includes: the heat insulation block 9 fixedly arranged on the top of the vibration motor 13, the bottom blocks 2 fixedly arranged on both sides of the vibration motor 13 at the top of the base 1. The top end of the bottom block 2 is fixedly connected to the bottom end of the heat insulation block 9. The materials of the bottom block 2 and the heat insulation block 9 are both heat insulation refractory materials. The vibration motor 13 is located inside the heat insulation block 9 and the bottom block 2, protecting the motor itself from heat and increasing the service life of the vibration motor 13.

[0048] Embodiment 3

[0049] As shown in the appendix Figure 1 As shown: The feed pipe 7 is fixedly inlaid on the upper mold 5. The bottom end of the feed pipe 7 is communicated with the upper mold core 501. The raw materials can be added into the upper mold core 501 by using the feed pipe 7.

[0050] Installation buckles 6 are fixedly arranged on both sides of the upper mold 5, the middle mold 4 and the lower mold 3. The upper mold 5, the middle mold 4 and the lower mold 3 fix their positions through the installation buckles 6.

[0051] Installation bolts 10 are respectively arranged at the four corner positions of the top end of the base 1. The equipment can be installed and fixed on the ground through the installation bolts 10.

[0052] Working principle: The upper mold 5, the middle mold 4 and the lower mold 3 are fitted together correspondingly through the limit posts 11 and the limit holes 12, and their positions are fixed by the mounting buckles 6. The raw materials are added into the mold through the feed pipe 7. When the raw materials are added into the feed pipe 7, the vibration motor 13 is started. The motor is connected to the heat insulation block 9 and the base 1, driving the whole equipment to vibrate so that no bubbles will appear during the forming process of the crankshaft. The fixing post 8 is connected to fix the upper mold 5, so that the upper mold 5 will not be loosened from the lower components during the vibration process, and the vibration amplitude of the upper mold 5 and the lower mold 3 is the same, and the raw materials inside the mold core will not be unevenly distributed. The vibration motor 13 is located inside the heat insulation block 9 and the bottom block 2, which insulates and protects the motor itself and increases the service life of the vibration motor 13. After cooling and forming, the mounting buckle 6 is opened, and the upper mold 5 and the middle mold 4 are taken out. The upper mold core 501 is in the shape of the upper half of the crankshaft, and the middle mold core 401 and the lower mold core 301 together are in the shape of the lower half of the crankshaft. The setting of the cross block 402 makes the crankshaft stay inside the middle mold 4, and the setting of the through groove 403 makes the crankshaft easy to be jacked up and leave the middle mold 4, helping the crankshaft to be separated from the casting equipment.

Claims

1. A ductile iron crankshaft casting equipment, comprising a base (1), a lower mold (3) fixedly arranged at the top of the base (1), a middle mold (4) arranged at the top of the lower mold (3), and an upper mold (5) arranged at the top of the middle mold (4), characterized in that: The middle mold (4) is movably arranged at the top of the lower mold (3) through the engagement of a limiting hole (12) and a groove, and includes a separation assisting structure arranged inside the middle mold (4) and a limiting structure arranged inside the middle mold (4); A vibration motor (13) is fixedly arranged at the top of the base (1), and includes a vibration structure arranged at the top of the base (1) and a heat insulation protection structure arranged at the top of the vibration motor (13).

2. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The separation assisting structure of the middle mold (4) includes: A middle mold core (401) arranged inside the middle mold (4); A transverse block (402) arranged inside the middle mold core (401); A through groove (403) penetrating between the transverse blocks (402) inside the middle mold core (401); An upper mold core (501) arranged inside the upper mold (5); A lower mold core (301) arranged inside the lower mold (3); The through grooves (403) are arranged in equidistant straight lines, the depth dimension of the through grooves (403) is larger than the depth dimension of the transverse blocks (402), and the position and internal dimension of the through grooves (403) are adapted to the position and internal dimension of the lower mold core (301).

3. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The limiting structure of the middle mold (4) includes: A limiting hole (12) arranged inside the upper mold (5); A limiting post (11) fixedly arranged at the top of the lower mold (3); The limiting hole (12) penetrates through the top and bottom of the middle mold (4), and the position and dimension of the limiting hole (12) are adapted to the position and dimension of the limiting post (11).

4. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The vibration structure of the vibration motor (13) includes: A fixed column (8) fixedly arranged at the top of the base (1); A heat insulation block (9) fixedly arranged at the top of the vibration motor (13); The fixed column (8) is V-shaped, the inner side of the top of the fixed column (8) is fixedly connected to the outer wall of the top corner of the upper mold (5) by bolts, the internal dimension of the fixed column (8) is adapted to the dimension of the upper mold (5), and the top of the heat insulation block (9) is fixedly connected to the bottom of the lower mold (3).

5. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The heat insulation protection structure of the vibration motor (13) includes: A heat insulation block (9) fixedly arranged at the top of the vibration motor (13); Bottom blocks (2) fixedly arranged on both sides of the vibration motor (13) at the top of the base (1); The top of the bottom block (2) is fixedly connected to the bottom of the heat insulation block (9), and the materials of the bottom block (2) and the heat insulation block (9) are both heat insulation refractory materials.

6. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: A feed pipe (7) is fixedly inlaid on the upper mold (5), and the bottom end of the feed pipe (7) is communicated with the upper mold core (501).

7. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: Mounting buckles (6) are fixedly arranged on both sides of the upper mold (5), the middle mold (4) and the lower mold (3).

8. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: Mounting bolts (10) are respectively arranged at the four corner positions of the top of the base (1).

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