Die core structure of door lock base die-casting die

Abstract

The utility model discloses a die core structure of a die-casting die of a door lock base, which comprises an upper die core, a lower die core and a plurality of lower die insert pins, the upper die core is matched with the lower die core to form a cavity, one end of each lower die insert pin is fixed on the lower die core, the other end of each lower die insert pin penetrates through the lower die core and then extends into the cavity, a main boss is arranged on the lower die core, and the main boss is provided with a plurality of through holes. The main boss is located in the middle of the cavity, a first groove is formed in the main boss, a second groove is formed in the upper mold core, and the first groove and the second groove are oppositely arranged to form a cinder ladle cavity. Due to the fact that the first groove is formed in the main boss, namely the first groove is formed in the position corresponding to the bearing force position of a die-cast product, when product die casting is carried out in the cavity, air in the cavity on the periphery of the cinder ladle cavity is squeezed into the cinder ladle cavity, and therefore the situation that air enters the corresponding position of the product to form air holes is effectively avoided; the compactness of products around the bearing capacity position of the product is effectively guaranteed, the requirement for the bearing capacity of the bearing capacity position is met, and the service life of the product is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to an important component of die casting mould, and particularly relates to a die core structure of a door lock base die casting mould. BACKGROUND

[0002] For a door lock with high requirements, the door lock base is usually obtained through die casting, but when the door lock base is die cast, air in the cavity of the die cavity enters the product, and air holes and water lines are easily generated, especially at the load bearing position of the door lock base, the load bearing position and other structures are matched first, and air holes are easily generated in the product part around the load bearing position, so that the actual load bearing capacity of the load bearing position cannot meet the requirements, thereby affecting the service life of the product. SUMMARY

[0003] The utility model discloses a die core structure of a door lock base die casting mould which can solve at least one of the above problems.

[0004] According to an aspect of the utility model, a die core structure of a door lock base die casting mould is provided, which comprises an upper die core, a lower die core and lower die inserts, the upper die core is matched with the lower die core and forms a die cavity, the lower die inserts are multiple, one end of the lower die inserts is fixed on the lower die core, the other end of the lower die inserts penetrates through the lower die core and extends into the die cavity, a main boss is arranged on the lower die core, the main boss is located at the middle of the die cavity, a first groove is arranged on the main boss, a second groove is arranged on the upper die core, the first groove and the second groove are oppositely arranged and form a slag pocket cavity.

[0005] The utility model has the beneficial effects that: the first groove is arranged at the main boss, that is, the first groove is arranged at the corresponding position of the load bearing position of the product after die casting, and the first groove is matched with the second groove to form the slag pocket cavity, therefore, when the product is die cast in the die cavity, the air in the die cavity around the slag pocket cavity is extruded into the slag pocket cavity, thereby effectively avoiding the air from entering the corresponding position of the product to form air holes, effectively ensuring the compactness of the product around the load bearing position, meeting the size requirement of the load bearing capacity of the load bearing position and ensuring the service life of the product.

[0006] In some embodiments, the two sides of the first groove are provided with flow guide grooves, the flow guide grooves are obliquely arranged, the flow guide grooves extend downward from the top end of the first groove to the first groove, and the flow guide grooves are in communication with the first groove. Thus, by arranging the flow guide grooves, the overflow and air during die casting can enter the slag pocket cavity along the flow guide grooves, which is beneficial to the communication between the slag pocket cavity and the die cavity.

[0007] In some embodiments, the top end of the flow guide groove is lower than the top end of the first groove. Thus, the top end of the flow guide groove is not blocked by the upper die core, thereby ensuring the normal entry of the overflow and air during die casting.

[0008] In some embodiments, the first recess is two, arranged along the length direction of the main boss, and the second recess is two corresponding to the first recess, and two ladle cavities are formed accordingly. Thus, by arranging two ladle cavities, the air holes in the product after die casting can be further reduced, and the product quality can be improved.

[0009] In some embodiments, the top of the first recess is provided with a thimble hole, the thimble hole penetrates downwardly through the lower die core, and the thimble hole is located between the flow guide grooves on both sides of the first recess. Thus, by arranging the thimble hole, the stress on both sides of the flow guide groove can be conveniently balanced, and the ladle can be conveniently and smoothly ejected together with the product by the thimble.

[0010] In some embodiments, the lower die core is provided with a flow channel, and the flow channel is two, located on both sides of the cavity. Thus, by arranging the flow channel, the cavity can be quickly filled with material, and the stability of the product quality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structure schematic view of the mold core structure of the door lock base die casting mold.

[0012] Figure 2 is a top view structure schematic view of the mold core structure of the door lock base die casting mold.

[0013] Figure 3 is Figure 2 a sectional view structure schematic view in A-A direction.

[0014] Figure 4 is Figure 2 a sectional view structure schematic view in B-B direction.

[0015] Figure 5 is a structure schematic view of the upper die core in the mold core structure of the door lock base die casting mold.

[0016] Figure 6 is a structure schematic view of the lower die core in the mold core structure of the door lock base die casting mold. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] Referring to Figures 1-6The core structure of the door lock base die-casting die comprises an upper die core 1, a lower die core 2 and lower die inserts 3. The upper die core 1 cooperates with the lower die core 2 to form a cavity 4. The lower die inserts 3 are fixed at one end to the lower die core 2 and extend into the cavity 4 at the other end. The lower die core 2 is provided with a main boss 21 located in the middle of the cavity 4. The main boss 21 is provided with a first recess 22. The upper die core 1 is provided with a second recess 11. The first recess 22 and the second recess 11 are oppositely arranged to form a slag pocket 5.

[0019] The cavity 4 is formed by the cooperation of the upper die core 1 and the lower die core 2, which facilitates the die casting of the door lock base in the cavity 4. The first recess 22 and the second recess 11 are the positions of the product that bear the load. The load at these positions is required to be above 7000 Newton in actual use. The slag pocket 5 is formed at these positions, which facilitates the overflow to directly enter the slag pocket 5 during die casting and the air in the surrounding cavity to be directly squeezed into the slag pocket 5, thereby avoiding the formation of air holes at the positions of the product around the slag pocket 5, improving the compactness of the load-bearing part of the product, and improving the load-bearing capacity of the corresponding position of the product to meet the use requirements of the product.

[0020] The first recess 22 is provided with a flow guide groove 23 on both sides. The flow guide groove 23 is inclined and extends downward from the top of the first recess 22 to the first recess 22. The flow guide groove 23 is in communication with the first recess 22. The top of the flow guide groove 23 is lower than the top of the first recess 22, so that when the upper die core 1 cooperates with the lower die core 2, the upper die core 1 will not block the top of the flow guide groove 23, thereby facilitating the overflow and air to be pressed into the slag pocket 5.

[0021] Therefore, when pouring the material in the cavity, the overflow can flow from the top of the flow guide groove 23 into the first recess 22, i.e. into the slag pocket 5. At the same time, during the die casting, the air can also flow into the slag pocket 5 along the top of the flow guide groove 23.

[0022] The first recess 22 is two, arranged along the length direction of the main boss 21. The second recess 11 is provided with two corresponding to the first recess 22, and two slag pockets 5 are formed accordingly. In this way, the air at the corresponding position in the cavity can be better pressed into the slag pocket 5 to meet the use requirements.

[0023] By arranging the slag pocket 5 at the load-bearing position of the main boss 21, on the one hand, it is convenient for the overflow and the air in the cavity to be pressed in, and on the other hand, it is not necessary to additionally increase the slag pocket 5 at the side of the lower die core or other positions, which is conducive to the reduction of the volume of the entire core structure, i.e. without increasing the size of the die core, the slag pockets are reasonably distributed to meet the normal use of the entire core structure.

[0024] The top of the first recess 22 is provided with a ejector pin hole 24, the ejector pin hole 24 penetrates downwardly through the lower mould core 2, and the ejector pin hole 24 is located between the two flow guide grooves 23 on the two sides of the first recess 22. In use, a corresponding ejector pin is installed in the ejector pin hole 24, so that when the product is finished pressure casting, the ladle in the ladle cavity 5 can be pushed upward by the ejector pin, and the ladle is pushed out together with the product. Since the ejector pin hole 24 is located between the two flow guide grooves 23 on the two sides of the first recess 22, when the ejector pin in the ejector pin hole 24 is upward, it can act between the two flow guide grooves 23, so that the ladles on the two flow guide grooves 23 can be synchronously pushed out, thereby ensuring the stability of the product pushing out.

[0025] The lower mould core 2 is provided with a flow channel 25, and the flow channel 25 is two, and is located on the two sides of the cavity 4. Among them, the flow channel 25 is located below the ladle cavity 5; the flow channel 25 is two, which can facilitate the pouring material to enter the cavity from the two sides of the profile 4 to fill the cavity; and finally the overflow material flows upward into the upper ladle cavity 5. Through the distribution of the flow channel 25 on the two sides of the cavity 4, the efficiency of product pouring can be improved, at the same time, the uniformity of pouring can be improved, which is beneficial to ensure the stability of product quality.

[0026] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the inventive concept of the present application, a number of variations and improvements can be made, these all belong to the protection scope of the present application.

Claims

1. The core structure of a die-casting mold for a door lock base, characterized in that, It includes an upper mold core (1), a lower mold core (2) and a lower mold insert (3). The upper mold core (1) and the lower mold core (2) cooperate to form a cavity (4). There are multiple lower mold inserts (3). One end of the lower mold insert (3) is fixed on the lower mold core (2), and the other end passes through the lower mold core (2) and extends into the cavity (4). The lower mold core (2) is provided with a main boss (21). The main boss (21) is located in the middle of the cavity (4). The main boss (21) is provided with a first groove (22). The upper mold core (1) is provided with a second groove (11). The first groove (22) and the second groove (11) are arranged opposite to each other and form a slag-filled cavity (5).

2. The core structure of the die-casting mold for the door lock base according to claim 1, characterized in that, The first groove (22) has guide grooves (23) on both sides. The guide grooves (23) are inclined and extend downward from the top of the first groove (22) to the first groove (22). The guide grooves (23) are connected to the first groove (22).

3. The core structure of the die-casting mold for the door lock base according to claim 2, characterized in that, The top of the guide groove (23) is lower than the top of the first groove (22).

4. The core structure of the die-casting mold for the door lock base according to claim 3, characterized in that, There are two first grooves (22) arranged along the length of the main boss (21). There are two second grooves (11) corresponding to the first grooves (22), and two slag cavities (5) are formed accordingly.

5. The core structure of the die-casting mold for the door lock base according to any one of claims 2 to 4, characterized in that, The top of the first groove (22) is provided with an ejector pin hole (24), which penetrates the lower mold core (2) downwards. The ejector pin hole (24) is located between the guide grooves (23) on both sides of the first groove (22).

6. The core structure of the die-casting mold for the door lock base according to claim 5, characterized in that, The lower mold core (2) is provided with two flow channels (25), which are located on both sides of the cavity (4).

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