Die-casting mold core structure for piston in anti-explosion air pump

Abstract

The utility model relates to a die-casting mould core structure for an explosion-proof air pump inner piston, which comprises a lower mould base, an upper mould core and a lower mould core, the upper mould core and the lower mould core which are stacked up and down are arranged in the middle of the upper end face of the lower mould base, four upper mould inserts embedded into the upper mould core are symmetrically arranged on the lower end face of the upper mould core, and the upper mould inserts are embedded into the lower mould core. Four upper mold inserts in one-to-one butt joint with the upper mold inserts are installed on the upper end face of the lower mold core in an embedded mode, a mold cavity structure is formed between the upper mold inserts and the lower mold inserts, a sprue spreader structure is installed on the rear portion of the upper end face of the lower mold base in an embedded mode, and longitudinal middle runners are arranged in the middle of the upper mold core and the middle of the lower mold core. The rear end of the middle runner is in butt joint with the sprue spreader structure, and the two sides of the middle runner are communicated with the four die cavity structures. The utility model has the characteristics of low maintenance cost, improved product production efficiency, improved product quality and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to die casting mould core structure technical field especially a kind of die casting mould core structure for piston in explosion-proof air pump. BACKGROUND

[0002] The piston in conventional explosion-proof air pump is produced by selecting die casting mould, and the die casting mould is usually provided with a cavity structure on the mould core structure to form the product structure. However, this production method has some defects. When the cavity position in the mould is damaged, the entire mould core needs to be replaced, which greatly increases the maintenance cost of the mould. In order to solve the above problems, the mould structure needs to be improved. SUMMARY

[0003] The utility model provides a kind of die casting mould core structure for piston in explosion-proof air pump, with low maintenance cost, improve product production efficiency, improve product quality and the like.

[0004] The utility model provides a kind of die casting mould core structure for piston in explosion-proof air pump, which solves the technical problems thereof by adopting the technical scheme, comprising a lower die seat, an upper mould core and a lower mould core, wherein the upper mould core and the lower mould core are installed in the middle of the upper end face of the lower die seat in an up-down stacking manner, four upper mould inserts are symmetrically installed on the lower end face of the upper mould core and embedded in the upper mould core, four lower mould inserts are embedded and installed on the upper end face of the lower mould core and one-to-one connected with the upper mould inserts, a cavity structure is formed between the upper mould inserts and the lower mould inserts, a shunt cone structure is embedded and installed on the rear part of the upper end face of the lower die seat, a longitudinal middle flow channel is arranged in the middle of the upper mould core and the lower mould core, the rear end of the middle flow channel is connected with the shunt cone structure, and the two sides of the middle flow channel are communicated with the four cavity structures.

[0005] In the technical scheme, the upper mould inserts and the lower mould inserts are installed to facilitate the formation of independent cavity structures. Once the cavity structure is damaged, only the damaged upper mould insert or lower mould insert needs to be replaced, which greatly reduces the maintenance cost of the mould. The shunt cone structure is arranged to facilitate the injection of aluminum liquid. The middle flow channel is arranged to facilitate the communication between the middle flow channel and the four cavity structures.

[0006] As a supplement to the technical scheme, four sets of exhaust block assemblies corresponding to the four cavity structures are symmetrically installed on the left and right ends of the upper end face of the lower die seat. The exhaust block assemblies are arranged to facilitate the exhaust of air in the cavity structure and improve the quality of the product.

[0007] As a supplement to the technical scheme, a plurality of exhaust slag ladles are uniformly arranged on the side of the cavity structure close to the exhaust block assembly. The exhaust slag ladles are arranged to facilitate the exhaust of excess aluminum liquid and ensure the quality of the product.

[0008] As a supplement to the technical solution, the four cavity structures are connected through the exhaust ladle, the bifurcated flow channel at the tail of the exhaust ladle and the respective exhaust block assemblies.

[0009] As a supplement to the technical solution, the left and right parts of the upper mold core and the lower mold core are symmetrically arranged with two groups of cooling flow channels, the middle part of the rear side of the upper mold core and the lower mold core is symmetrically provided with water inlets communicated with the two groups of cooling flow channels, the left and right ends of the rear side of the upper mold core and the lower mold core are provided with water outlets communicated with the two groups of cooling flow channels, and the front side of the upper mold core and the lower mold core is symmetrically provided with U-shaped cooling channels communicated with the two groups of cooling flow channels.

[0010] The two groups of cooling flow channels are arranged to facilitate rapid cooling of the mold, and the U-shaped cooling channels are arranged to form a cooling loop and improve the cooling efficiency.

[0011] As a supplement to the technical solution, the cooling flow channels in the upper mold core and the lower mold core are misaligned with the upper mold insert or the lower mold insert, so that the upper mold insert and the lower mold insert can be conveniently replaced and maintained.

[0012] Beneficial effects: The utility model relates to a kind of die casting mold core structure for piston in explosion-proof air pump, by installing upper mold insert and lower mold insert to facilitate the formation of independent cavity structure, once cavity structure is damaged, only need to replace damaged upper mold insert or lower mold insert, greatly reduce mold maintenance cost, by setting up the structure of shunt cone to facilitate aluminum liquid injection, by setting up middle flow channel, to facilitate middle flow channel and four cavity structures communication, with maintenance cost low, improve product production efficiency, improve product quality and the like characteristics. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure view of the utility model;

[0014] Figure 2 It is the plan view of the utility model;

[0015] Figure 3 It is the utility model Figure 2 A-A direction sectional view of the utility model;

[0016] Figure 4 It is the plan view of the lower mold core of the utility model;

[0017] Figure 5 It is the bottom view of the upper mold core of the utility model;

[0018] Figure 6It is the structure view of the water inlet and water outlet.

[0019] Figure 7 It is the structure view of the U-shaped cooling channel.

[0020] The figure shows: 1, lower die seat, 2, split cone structure, 3, upper die core, 4, lower die core, 5, upper die insert, 6, lower die insert, 7, exhaust block assembly, 8, water inlet, 9, water outlet, 10, U-shaped cooling channel, 11, middle runner, 12, cavity structure, 13, bifurcated runner, 14, exhaust ladle. DETAILED DESCRIPTION

[0021] The utility model is further described below in combination with specific embodiments. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0022] The embodiment of the utility model relates to a kind of die-casting die core structure for preventing explosion air pump inner piston, such as Figure 1 As shown in Figure 5, it includes lower die seat 1, upper die core 3 and lower die core 4, the lower die seat 1 upper end face middle part is installed with upper die core 3 and lower die core 4 in upside-down stacking, the lower end surface of the upper die core 3 is symmetrically installed with four upper die inserts 5 embedded in the upper die core 3, the upper end surface of the lower die core 4 is embeddedly installed with four lower die inserts 6 and upper die insert 5 one-to-one docking, the upper die insert 5 and lower die insert 6 form cavity structure 12 between them, the rear part of the upper end surface of the lower die seat 1 is embeddedly installed with split cone structure 2, the middle part of the upper die core 3 and lower die core 4 is provided with longitudinal middle runner 11, the rear end of the middle runner 11 and split cone structure 2 are docked, and the two sides of the middle runner 11 and four cavity structures 12 are communicated.

[0023] In the technical solution, upper die insert 5 and lower die insert 6 are installed to facilitate the formation of independent cavity structure 12. Once the cavity structure 12 is damaged, only the damaged upper die insert 5 or lower die insert 6 needs to be replaced, which greatly reduces the mold maintenance cost. Split cone structure 2 is provided to facilitate the injection of aluminum liquid. Middle runner 11 is provided to facilitate the communication between middle runner 11 and four cavity structures 12.

[0024] As a supplement to the technical solution, the upper end surface of the lower die seat 1 is symmetrically installed with four groups of exhaust block assemblies 7 corresponding to the four cavity structures 12. Exhaust block assemblies 7 are provided to facilitate the exhaust of air in the cavity structure 12 and improve the quality of the product.

[0025] As a supplement to the technical solution, the mold cavity structure 12 is uniformly arranged with several exhaust slag ladles 14 near one side of the exhaust block assembly 7. The exhaust slag ladles 14 are arranged to facilitate the discharge of excess aluminum liquid and ensure product quality.

[0026] As a supplement to the technical solution, the four mold cavity structures 12 are connected and communicated through the exhaust slag ladles 14, the bifurcated flow channels 13 at the tail of the exhaust slag ladles 14, and the respective exhaust block assemblies 7.

[0027] As shown in Figure 6 and Figure 7 As a supplement to the technical solution, the left and right parts of the upper mold core 3 and the lower mold core 4 are symmetrically arranged with two groups of cooling flow channels. The middle part of the rear side of the upper mold core 3 and the lower mold core 4 is symmetrically provided with water inlets 8 communicated with the two groups of cooling flow channels. The left and right ends of the rear side of the upper mold core 3 and the lower mold core 4 are provided with water outlets 9 communicated with the two groups of cooling flow channels. The front side of the upper mold core 3 and the lower mold core 4 is symmetrically installed with U-shaped cooling channels 10 communicated with the two groups of cooling flow channels.

[0028] The two groups of cooling flow channels are arranged to facilitate rapid cooling of the mold. The U-shaped cooling channels 10 are installed to facilitate the formation of a cooling loop and improve cooling efficiency.

[0029] As a supplement to the technical solution, the cooling flow channels in the upper mold core 3 and the lower mold core 4 are misaligned with the upper mold insert 5 or the lower mold insert 6. By misaligning the cooling flow channels with the upper mold insert 5 or the lower mold insert 6, the upper mold insert 5 and the lower mold insert 6 can be easily replaced and maintained.

[0030] Embodiment

[0031] When the upper mold core 3 and the lower mold core 4 are closed, the aluminum liquid enters the middle flow channel 11 from the flow dividing cone structure 2, and the aluminum liquid is injected into the four mold cavity structures 12 through the middle flow channel 11. After the aluminum liquid fills the mold cavity structure 12, the excess aluminum liquid and air are discharged from the exhaust slag ladle 14, thereby ensuring that a large number of air shrinkage holes are not generated inside the product, further improving the product quality. After cooling, the cooling liquid enters from the water inlet 8, flows along the cooling flow channel and the U-shaped cooling channel 10, and is discharged from the water outlet 9, thereby realizing the circulation of the cooling liquid and ensuring the rapid cooling of the mold.

Claims

1. A die casting core structure for a piston in an explosion-proof gas pump, characterized by: The utility model relates to a mould structure of injection moulding machine, including lower die seat (1), upper mould core (3) and lower mould core (4), the lower die seat (1) upper end face middle part is installed with the upper mould core (3) and lower mould core (4) in up-down stacking, the lower end face of upper mould core (3) is installed with four upper mould inserts (5) embedded in upper mould core (3) symmetry, the upper end face of lower mould core (4) is embedded and is installed with four lower mould inserts (6) and upper mould inserts (5) butt joint one to one, the upper mould inserts (5) and lower mould inserts (6) between form mould cavity structure (12), the upper end face rear portion of lower die seat (1) is embedded and is installed with the shunt cone structure (2), the middle part of upper mould core (3) and lower mould core (4) is provided with the longitudinal middle flow channel (11) of middle part, the rear end of middle flow channel (11) and shunt cone structure (2) butt joint, the both sides of middle flow channel (11) and four mould cavity structures (12) are communicated.

2. A die casting core structure for a piston of an explosion-proof gas pump according to claim 1, characterized in that: The upper end face left and right ends of lower die seat (1) are symmetrically installed with four groups of exhaust block assemblies (7) corresponding to four mould cavity structures (12) one to one.

3. A die casting core structure for a piston of an explosion-proof gas pump according to claim 2, characterized in that: The mould cavity structure (12) is uniformly arranged with a plurality of exhaust slag ladles (14) close to one side of exhaust block assembly (7).

4. A die casting core structure for a piston of an explosion-proof gas pump according to claim 3, characterized in that: Four mould cavity structures (12) are connected through exhaust slag ladle (14), bifurcated flow channel (13) located at the tail of exhaust slag ladle (14) and respective corresponding exhaust block assembly (7).

5. A die casting core structure for a piston for an explosion-proof gas pump according to claim 1, characterized in that: The left and right parts of upper mould core (3) and lower mould core (4) are symmetrically arranged with two groups of cooling flow channels, the rear middle part of upper mould core (3) and lower mould core (4) is symmetrically provided with water inlet (8) communicated with two groups of cooling flow channels, the left and right ends of the rear side of upper mould core (3) and lower mould core (4) are provided with water outlet (9) communicated with two groups of cooling flow channels, and the front side of upper mould core (3) and lower mould core (4) is symmetrically installed with U-shaped cooling channel (10) communicated with two groups of cooling flow channels.

6. A die casting core structure for a piston for an explosion-proof gas pump according to claim 5, characterized in that: The cooling flow channels in upper mould core (3) and lower mould core (4) and upper mould inserts (5) or lower mould inserts (6) form a misplacement.

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