CN220444993U - Core with ejector for mineral casting - Google Patents

Abstract

The application relates to the technical field of mineral casting molds, in particular to a core with an ejector device for a mineral casting, which drives a top cap to rotate forward through a screw rod to be abutted against the mineral casting, so that the core is subjected to reverse thrust and taken out from a cavity, and the core damage and the mineral casting damage caused by violent demolding are avoided; in the forward rotation process of the screw rod, the round table gradually releases the pressure on the upright post, the cuboid lock tongue is driven to retract in the cavity of the template lock under the action of the spring, the connection relation with the template is released, the effect of fixing the core can be achieved, and the core can be conveniently and quickly taken down under the condition that the core and the mineral casting are not damaged, so that the mold is obtained at one time.

Description

Core with ejector for mineral casting

Technical field:

the application relates to the technical field of mineral casting molds, in particular to a core with an ejector device for mineral castings.

The background technology is as follows:

the mineral casting is a brittle material relative to the iron casting, and after the casting is completed and solidified, the mould is removed to take out some hollow cores. The mineral casting skin is easily damaged and falls off due to improper use or operation in the dismantling process, and the aesthetic feeling and the size of the component are affected. Violent demolishs, also can cause the damage of core, unable reuse influences core life.

The utility model comprises the following steps:

in order to solve the technical problems, the utility model provides a core with an ejection device for mineral castings, which solves the technical problems that: mineral castings are easily damaged during the core removal process, as well as core damage. In order to solve the technical problems, the utility model adopts the following technical scheme:

a core for a mineral casting with an ejector, comprising:

a top cap is embedded on one side of the core, the outer side of the top cap is flush with the inner side of the core, and a horizontal cavity is formed in the core;

the screw hole is formed in the top cap;

one end of the screw rod is meshed and connected with the screw hole in a threaded structure mode, the other end of the screw rod passes through the horizontal cavity and leaks out of one side of the mold core, and the screw rod is meshed and connected with the mold core in a threaded structure mode;

the round table is arranged in the horizontal cavity and sleeved outside the screw rod in a fixed structure mode;

the vertical cavity is communicated with the horizontal cavity and extends to the lower end surface of the core;

the locking mechanism is arranged in the vertical cavity in a sliding structure mode, and the upper end face of the locking mechanism is in contact with the side wall of the circular truncated cone.

Further, the round table and the screw are coaxially arranged;

the lower bottom surface of the round table is positioned at one side close to the top cap, and the diameter of the upper bottom surface of the round table is the same as that of the screw rod.

Further, the vertical cavity comprises a column cavity and a rectangular cavity, the upper part of the column cavity is communicated with the horizontal cavity, and the lower part of the column cavity is communicated with the rectangular cavity;

the locking mechanism comprises a column arranged in a column cavity and a cuboid lock tongue arranged in a rectangular cavity, wherein the column is fixedly connected with the cuboid lock tongue, the outer wall of the column is sleeved with a fixed ring A in a fixed structure mode, the column at the lower part of the fixed ring A is sleeved with a fixed ring B in a sliding structure mode, and the outer wall of the fixed ring B is connected with the side wall of the column cavity in a fixed structure mode;

a spring is sleeved outside the upright post between the fixed ring A and the fixed ring B.

Further, one end of the screw rod far away from the top cap is fixedly provided with a handle.

The beneficial effects of the utility model are as follows: the screw is rotated forward to drive the top cap to rotate out and prop against the mineral casting, so that the core is pushed in the opposite direction and taken out in the cavity, and the damage of the core and the damage of the mineral casting caused by violent demolding are avoided; in the forward rotation process of the screw rod, the round table gradually releases the pressure on the upright post, the cuboid lock tongue is driven to retract in the cavity of the template lock under the action of the spring, the connection relation with the template is released, the effect of fixing the core can be achieved, and the core can be conveniently and quickly taken down under the condition that the core and the mineral casting are not damaged, so that the mold is obtained at one time.

Description of the drawings:

fig. 1 is a schematic perspective view of a partially cut-away structure of the present utility model.

Fig. 2 is a schematic partial perspective view of an embodiment of the present utility model.

In the figure:

1. the mold comprises a mold core, 2, a top cap, 3, a horizontal cavity, 4, screw holes, 5, a screw rod, 6, a round table, 7, a column cavity, 8, a rectangular cavity, 9, a column, 10, a cuboid lock tongue, 11, a fixed ring A,12, a fixed ring B,13, a handle, 15 and a lock cavity.

The specific embodiment is as follows:

for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will now be described in further detail with reference to the accompanying drawings and the following examples, so that the public can better understand the method of practicing the present utility model, and the specific embodiments of the present utility model are as follows:

a core for a mineral casting with an ejector, comprising: the mold core 1 is embedded with a top cap 2 at one side of the mold core 1, the top cap 2 is in clearance fit with the side wall of the embedded cavity on the mold core 1, the outer side of the top cap 2 is flush with the inner side of the mold core 1, and a horizontal cavity 3 is formed in the mold core 1; the screw hole 4 is formed in the top cap 2; one end of the screw 5 is meshed and connected with the screw hole 4 in a threaded structure mode, the other end of the screw passes through the horizontal cavity 3 to leak outside one side of the core 1, and the screw 5 is meshed and connected with the core 1 in a threaded structure mode; the screw rod 5 is rotated in the forward direction, the top cap 2 is screwed out to be abutted against the mineral casting through the threaded engagement of the screw rod 5 and the core 1, and then the core 1 is subjected to thrust in the opposite direction and is taken out in the cavity, so that the damage of the core 1 and the damage of the mineral casting caused by violent demolding are avoided.

It should be noted that, the screw 5 is provided with the handle 13 in a fixed way far away from the one end of top cap 2, rotates screw 5 through handle 13, and is simple and convenient.

Further, a round table 6 is arranged in the horizontal cavity 3, the round table 6 is sleeved outside the screw 5 in a fixed structure mode, the vertical cavity is communicated with the horizontal cavity 3 and extends to the lower end face of the core 1, the locking mechanism is arranged in the vertical cavity in a sliding structure mode, and the upper end face of the locking mechanism is in contact with the side wall of the round table 6.

Specifically, the vertical cavity comprises a column cavity 7 and a rectangular cavity 8, the upper part of the column cavity 7 is communicated with the horizontal cavity 3, and the lower part of the column cavity 7 is communicated with the rectangular cavity 8; the locking mechanism comprises an upright post 9 arranged in the column cavity 7 and a cuboid lock tongue 10 arranged in the rectangular cavity 8, the upright post 9 is fixedly connected with the cuboid lock tongue 10, and the cuboid lock tongue 10 is matched with the lock cavity 15 and can play a limiting role; the outer wall of the upright post 9 is sleeved with a fixed ring A11 in a fixed structure mode, the upright post 9 at the lower part of the fixed ring A11 is sleeved with a fixed ring B12 in a sliding structure mode, and the outer wall of the fixed ring B12 is connected with the side wall of the column cavity 7 in a fixed structure mode; a spring is sleeved outside the upright post 9 between the fixed ring A11 and the fixed ring B12.

It should be noted that, round platform 6 and screw rod 5 coaxial arrangement, round platform 6 bottom surface is located and is close to fixed cover 2 one side, and round platform 6 goes up bottom surface diameter and screw rod 5 diameter the same, and this kind of design can be when top cap 2 screw in core 1 completely, and cuboid spring bolt 10 is in the locking state that stretches out, and when top cap 2 unscrewed, cuboid spring bolt 10 is in the withdrawal unblock state.

The working principle and working process of the utility model are as follows:

(1) Before pouring:

firstly, the inner end of the screw 5 of the core 1 contacts with the bottom of the screw hole 4, the core 1 is placed at a preset position of the template, after the placement is finished, the outer vertical surface of the core 1 is flush with the side wall of the template, and an opening on the template plays a limiting role on the core 1 in the circumferential direction.

Secondly, through the reverse rotation screw rod 5 of handle 13, drive screw rod 5 and round platform 6 outside removal, round platform 6 side contact stand 9 up end, along with the removal of round platform 6 progressively extrudees stand 9 downwards, stand 9 drive solid fixed ring A11, cuboid spring bolt 10 down motion, and the spring compresses gradually, and at this moment, cuboid spring bolt 10 gets into in lock chamber 15, plays spacing effect to core 1 axial, accomplishes and lays.

(2) After solidification of the mineral castings:

the handle 13 is rotated in the reverse direction, the screw rod 5 gradually stretches into the core 1 and the screw hole 4, at the moment, the top cap 2 is abutted against the side wall of the mineral casting, the screw rod 5 rotates and can not drive the top cap 2 to rotate, only the round table 6 is driven to rotate, along with the change of the inclined plane of the round table 6, the spring pressure is released, the fixing ring A11 is driven to move upwards, the fixing ring A11 drives the cuboid lock tongue 10 to retract into the rectangular cavity 8 from the lock cavity 15 through the upright post 9, and unlocking is completed.

Further counter-rotating handle 13, screw rod 5 go deep into screw 4 bottoms, and when screw rod 5 terminal surface and screw 4 bottom terminal surface contact, screw rod 5 drives top cap 2 rotation, through screw rod 5 and the screw thread meshing of core 1, with top cap 2 back-out conflict on the mineral foundry goods, and then core 1 receives the thrust of opposite direction and keeps away the intracavity separation, takes out from keeping away in the cavity again, accomplishes the demolding work.

In describing the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of the above description, will appreciate that other embodiments are contemplated within the scope of the utility model as described herein.

Claims (4)

1. A core for a mineral casting with an ejector, comprising:

a top cap (2) is embedded on one side of the core (1), the outer side of the top cap (2) is flush with the inner side of the core (1), and a horizontal cavity (3) is formed in the core (1);

the screw hole (4), the screw hole (4) is opened on the top cap (2);

one end of the screw rod (5) is meshed and connected with the screw hole (4) in a threaded structure mode, the other end of the screw rod (5) penetrates through the horizontal cavity (3) to be leaked out of one side of the mold core (1), and the screw rod (5) is meshed and connected with the mold core (1) in a threaded structure mode;

the round table (6) is arranged in the horizontal cavity (3) and sleeved outside the screw (5) in a fixed structure mode;

the vertical cavity is communicated with the horizontal cavity (3) and extends to the lower end face of the core (1);

the locking mechanism is arranged in the vertical cavity in a sliding structure mode, and the upper end face of the locking mechanism is in contact with the side wall of the round table (6).

2. A core with an ejector device for mineral castings according to claim 1, wherein: the round table (6) and the screw (5) are coaxially arranged;

the lower bottom surface of the round table (6) is positioned at one side close to the top cap (2), and the diameter of the upper bottom surface of the round table (6) is the same as that of the screw (5).

3. A core with an ejector device for mineral castings according to claim 1, wherein: the vertical cavity comprises a column cavity (7) and a rectangular cavity (8), the upper part of the column cavity (7) is communicated with the horizontal cavity (3), and the lower part of the column cavity (7) is communicated with the rectangular cavity (8);

the locking mechanism comprises a stand column (9) arranged in the column cavity (7) and a cuboid lock tongue (10) arranged in the rectangular cavity (8), wherein the stand column (9) is fixedly connected with the cuboid lock tongue (10), a fixed ring A (11) is sleeved on the outer wall of the stand column (9) in a fixed structure mode, a fixed ring B (12) is sleeved on the stand column (9) at the lower part of the fixed ring A (11) in a sliding structure mode, and the outer wall of the fixed ring B (12) is connected with the side wall of the column cavity (7) in a fixed structure mode;

a spring is sleeved outside the upright post (9) between the fixed ring A (11) and the fixed ring B (12).

4. A core with an ejector device for mineral castings according to claim 1, wherein: one end of the screw rod (5) far away from the top cap (2) is fixedly provided with a handle (13).