CN210754979U - Multi-cavity sand core machine - Google Patents

Abstract

The utility model discloses a multi-cavity sand core machine, which comprises a sand shooting mechanism, a sand core mould and a cavity mechanism arranged in the sand core mould, wherein the sand shooting mechanism can be displaced above the sand core mould and is closely attached to the top surface of the sand core mould; the bottom of the sand shooting mechanism is provided with a sand shooting hole, the cavity mechanism comprises a vertical sand inlet pipeline and a plurality of cavities, the vertical sand inlet pipeline is communicated with each cavity, and the sand shooting hole is communicated with the vertical sand inlet pipeline. The utility model adopts the upper and lower die sinking, the horizontal sand shooting pipeline connects a plurality of die cavities with a sand shooting hole through the vertical sand shooting pipeline, thereby the sand shooting pressure at the sand shooting hole can not be reduced; on the basis of not increasing the sand shooting holes, the number of the cavities is increased, so that the production efficiency is improved on the premise of ensuring the quality of the sand core.

Description

Multi-cavity sand core machine

Technical Field

The utility model mainly relates to the casting field especially relates to a multicavity sand core machine.

Background

The gating system is a passage for liquid metal in the casting mould to flow into the cavity, and the gating system has close relation with the quality of the casting. The pouring cup is a very important part of the pouring system, which bears the flow of metal from the ladle and is introduced into the sprue, preventing overflow by over-pouring; in addition, the pouring cup has a certain slag stopping function after the filter screen is placed. When the pouring ladle is used for pouring, the metal hydraulic head is high, the impact force is large, the flow is not easy to control, a pouring ladle nozzle is not easy to align with a straight pouring channel, and the use of a pouring cup is more required. The prior sprue cup is generally produced by adopting a vertical parting core making machine (namely, left and right die opening), one die corresponds to one cavity, and one cavity is produced by sand shooting through one sand shooting hole, so that the production efficiency is very low. In the industry, attempts have been made to modify a core making machine, so as to increase the production efficiency by increasing the number of sand shooting holes and the corresponding cavity groups in one mold, but the following problems exist in practice: one of the most important influencing factors of the quality of the sand core is the sand shooting pressure at the inlet of the sand shooting hole, the maximum air source pressure provided by one core making machine is fixed, and when the number of the sand shooting holes is more than or equal to 3, the sand shooting pressure is uniformly distributed to each sand shooting hole during sand shooting, so that the pressure at the inlet of the actual sand shooting hole is insufficient, the quality of the produced sand core (namely a pouring cup) does not meet the requirement, and the like.

Disclosure of Invention

In order to overcome exist not enough among the prior art, the utility model provides a multicavity sand core machine adopts mould opening from top to bottom, and the level is penetrated sand pipeline and is penetrated sand hole with a sand injection of N die cavity intercommunication, on the basis that does not increase sand injection hole, thereby increases die cavity quantity and improves production efficiency under the prerequisite of guaranteeing the pouring basin quality. The technical scheme is as follows:

a multi-cavity sand core machine comprises a sand shooting mechanism, a sand core mould and a cavity mechanism arranged in the sand core mould, wherein the sand shooting mechanism can be displaced above the sand core mould and is tightly attached to the top surface of the sand core mould; the bottom of the sand shooting mechanism is provided with a sand shooting hole, the cavity mechanism comprises a vertical sand inlet pipeline and a plurality of cavities, the vertical sand inlet pipeline is communicated with each cavity, and the sand shooting hole is communicated with the vertical sand inlet pipeline.

Preferably, a horizontal sand inlet pipeline is further arranged between the vertical sand inlet pipeline and each cavity, one end of the horizontal sand inlet pipeline is connected with the bottom of the vertical sand inlet pipeline, and the other end of the horizontal sand inlet pipeline is arranged on the side wall of each cavity.

Preferably, the multi-cavity sand core machine further comprises an upper ejector plate used for ejecting the sand core positioned at the vertical sand inlet pipeline section; the upper top plate is provided with a first ejector rod, the upper top plate can move above the sand core mould during working, and the first ejector rod can be inserted into the inlet of the vertical sand inlet pipeline.

Preferably, the sand core mould comprises a movable mould and a fixed mould; the movable mould is positioned above the fixed mould and can move in the vertical direction; and the bottom of the upper top plate is provided with a limiting mechanism for limiting the displacement range of the movable die, wherein the limiting mechanism is distributed around the first ejector rod.

Preferably, the bottom of the upper ejector plate is also provided with a first guide mechanism for assisting the first ejector rod to align with the inlet of the vertical sand inlet channel; and the movable die is provided with a guide channel matched with the first guide mechanism.

Preferably, the limiting mechanism is a limiting rod; the first guide mechanism is a guide rod.

Preferably, the bottom of the fixed die is further provided with a lower top plate which is used for ejecting the sand core and can move in the vertical direction, the lower top plate comprises a second ejector rod arranged on the top surface of the lower top plate, and the second ejector rod can apply external force to the bottom of the sand core to eject the sand core.

Preferably, the lower top plate further comprises a plurality of second guide mechanisms, a first lower top plate and a second lower top plate; the second guide mechanisms are distributed around the second ejector rod; the top of the second guide mechanism is fixedly connected with the bottom surface of the fixed die, and the bottom of the second guide mechanism is fixedly connected with the second lower top plate; the first lower top plate is located above the second lower top plate, the second ejector rod is arranged on the first lower top plate, and the first lower top plate can move up and down along the second guide rod mechanism and drive the second ejector rod to move up and down.

Preferably, the second guide mechanism is a guide rod, a limit sleeve used for preventing the first lower top plate from excessively rising is sleeved on the second guide mechanism in a sliding mode, and the limit sleeve is located between the fixed die and the first lower top plate.

Preferably, the number of the cavities is 4; in addition, the sand shooting mechanism comprises a sand shooting cover and a sand shooting plate, the sand shooting plate is fixedly arranged at the bottom of the sand shooting cover, and the sand shooting hole is formed in the sand shooting plate.

The beneficial effects are as follows:

1. the utility model adopts the upper and lower die sinking, the horizontal sand shooting pipeline connects a plurality of die cavities with a sand shooting hole through the vertical sand shooting pipeline, thereby the sand shooting pressure at the sand shooting hole can not be reduced; on the basis of not increasing the sand shooting holes, the number of the cavities is increased, so that the production efficiency is improved on the premise of ensuring the quality of the sand core.

2. The multi-cavity sand core machine is also provided with an upper top plate, the bottom of the upper top plate is provided with an ejector rod aligned with the position of the vertical sand inlet pipeline, and the ejector rod is used for ejecting a sand core positioned at the section position of the vertical sand inlet pipeline during mold opening so as to prevent the sand core positioned at the section position of the vertical sand inlet pipeline from being broken in the vertical sand inlet pipeline; in order to conveniently take the formed sand core in the mold cavity, the bottom of the fixed mold is also provided with a lower top plate, the lifting of the first lower top plate can be controlled through related operations, and the sand core is ejected by utilizing a second ejector rod arranged on the first lower top plate; in order to prevent that the distance that the psammitolite was pushed out is too high, leads to the psammitolite to be broken into pieces, and the slip is cup jointed on this second guiding mechanism and is used for preventing the stop collar that first roof excessively rises.

3. The first guide mechanism is arranged at the bottom of the upper top plate, so that the auxiliary first ejector rod is aligned with the inlet of the vertical sand inlet channel.

Drawings

Fig. 1 shows a structural development view of a four-chamber horizontal core making machine according to the present invention;

fig. 2 shows a three-dimensional structure development view of the four-chamber horizontal core making machine of the present invention;

FIG. 3 is a schematic structural view of a cavity mechanism;

fig. 4 shows a three-dimensional structure development view of the eight-cavity horizontal core making machine of the present invention.

In the figure:

1-a sand shooting mechanism; 1-1-shooting a sand hole; 1-2-shooting a sand cover; 1-3-shooting sand plate; 2-sand core mould; 2-1-moving die; 2-1-1-a guide channel; 2-2-fixing the mold; 2-3-lower ceiling; 2-3-1-a second ejector rod; 2-3-2-a second guide mechanism; 2-3-3-a limiting sleeve; 2-3-4-first lower top plate; 2-3-5-second lower top plate; 3-a cavity mechanism; 3-1-vertical sand-feeding pipeline; 3-2-cavity; 3-3-horizontal sand feeding pipeline; 4-upper top plate; 4-1-a first ejector rod; 4-2-a limiting mechanism; 4-3-first guide mechanism.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings 1 to 3:

a multi-cavity sand core machine comprises a sand shooting mechanism 1, a sand core mould 2 and a cavity mechanism 3 arranged in the sand core mould, wherein the sand shooting mechanism can be displaced above the sand core mould and is tightly attached to the top surface of the sand core mould; wherein:

the sand shooting mechanism comprises a sand shooting cover 1-2 and a sand shooting plate 1-3, the sand shooting plate is arranged at the bottom of the sand shooting cover, and a sand shooting hole 1-1 is further formed in the sand shooting plate;

the cavity mechanism comprises a vertical sand inlet pipeline 3-1, 4 cavities 3-2 and a horizontal sand inlet pipeline 3-3, one end of the horizontal sand inlet pipeline is connected with the bottom of the vertical sand inlet pipeline, and the other end of the horizontal sand inlet pipeline is arranged on the side wall of the cavity; the sand shooting hole 1-1 is communicated with the cavity 3-2 through a vertical sand inlet pipeline 3-1;

the sand core mould 2 comprises a movable mould 2-1 and a fixed mould 2-2, wherein the movable mould is positioned above the fixed mould and can move in the vertical direction; in addition, a cavity mechanism 3 is positioned in the sand core mould 2, and the cavity mechanism is a molding area of the sand core.

The utility model adopts the upper and lower die sinking, the horizontal sand shooting pipeline connects a plurality of die cavities with a sand shooting hole through the vertical sand shooting pipeline, thereby the sand shooting pressure at the sand shooting hole can not be reduced; on the basis of not increasing the sand shooting holes, the number of the cavities is increased, so that the production efficiency is improved on the premise of ensuring the quality of the sand core.

Furthermore, in order to prevent the sand core at the section position of the vertical sand inlet pipeline from being broken in the vertical sand inlet pipeline during mold opening, the multi-cavity sand core machine also comprises an upper ejector plate 4 for ejecting the sand core at the section position 3-1 of the vertical sand inlet pipeline; the upper top plate is provided with a first ejector rod 4-1, the upper top plate can move above the sand core mould 2 during working, and the first ejector rod 4-1 can be inserted into an inlet of the vertical sand inlet pipeline 3-1. It should be noted that the upper top plate 4 can be located around the sand core mold 2 when not in operation, and only after the sand core is formed after the sand injection is completed, the upper top plate 4 is displaced from the original position to the position right above the sand core module 2, and is inserted into the inlet of the vertical sand inlet pipeline 3-1 through the first top rod 4-1, so that the sand core located at the section 3-1 of the vertical sand inlet pipeline is ejected.

Furthermore, the bottom of the upper top plate 1-4 is also provided with a limiting mechanism 4-2 for limiting the downward displacement range of the upper top plate 4, wherein the limiting mechanism is distributed around the first ejector rod 4-1.

Furthermore, the bottom of the upper ejector plate is also provided with a first guide mechanism 4-3 for assisting the first ejector rod 4-1 to align with the inlet of the vertical sand inlet channel; the movable die 2-1 is provided with a guide channel 2-1-1 matched with the first guide mechanism 4-3.

Further, in order to conveniently take out the sand core formed in the cavity mechanism 3, a lower top plate 2-3 which is used for ejecting the sand core and can move in the vertical direction is further arranged at the bottom of the fixed die 2-2, and the lower top plate comprises a second ejector rod, a plurality of second guide mechanisms 2-3-2, a first lower top plate 2-3-4 and a second lower top plate 2-3-5; the second ejector rod is arranged on the top surface of the lower ejector plate, and the second guide mechanisms are distributed on the periphery of the second ejector rod; the top of the second guide mechanism is fixedly connected with the bottom surface of the fixed die, and the bottom of the second guide mechanism is fixedly connected with the second lower top plate; the first lower top plate is located above the second lower top plate, the second ejector rod is arranged on the first lower top plate, the first lower top plate can move up and down along the second guide rod mechanism and drive the second ejector rod to move up and down, and external force can be applied to the bottom of the sand core to eject the sand core through the upward movement of the second ejector rod.

Furthermore, in order to prevent the sand core from being broken due to the fact that the distance of the sand core which is ejected is too high, a limiting sleeve 2-3-3 which is used for preventing the first lower top plate from excessively rising is sleeved on the second guide mechanism in a sliding mode, and the limiting sleeve is located between the fixed die and the first lower top plate.

Referring to fig. 4, the utility model discloses a four chamber horizontal core making machines can regard as minimum unit, can also adopt eight chamber horizontal core making machines to make the psammitolite in the practice, set up 2 on the shooting plate respectively and penetrate the sand hole to correspond 2 die cavity mechanisms, through once penetrating sand, accomplish 8 psammitolites, very big improvement production efficiency.

The working principle is as follows:

the first step is as follows: and (5) sand is injected into the sand shooting cover 1-2, and the sand injection is finished.

The second step is that: and (4) assembling the movable die 2-1 and the fixed die 2-2.

The third step: the sand shooting mechanism 1 is moved from the starting position to the position above the movable mold and then moved downwards until the bottom surface of the sand shooting plate 1-3 is completely attached to the top surface of the movable mold 2-1, and then sand shooting is started; after the sand shooting is finished, the sand shooting mechanism moves upwards and is restored to the initial position, at the moment, the sand is injected into the cavity mechanism 3, and the sand core is molded.

The fourth step: the upper top plate 4 is moved to the position above the sand core mould 2 from the starting position, the first guide mechanism 4-3 is inserted into the guide channel 2-1-1 matched with the upper top plate, and the first ejector rod 4-1 is inserted into the inlet of the vertical sand inlet channel in an aligning way; under the action force of the first ejector rod, the sand core positioned at the vertical sand inlet pipeline section is jacked loose, and the limiting mechanism 4-2 can limit the downward displacement distance of the upper top plate, so that the sand core is prevented from being cracked due to the fact that the first ejector rod excessively exerts the action force on the sand core.

The fifth step: the upper top plate 4 moves upwards, and at the moment, the first ejector rod 4-1 leaves the vertical sand inlet channel and moves to the initial position.

And a sixth step: and (3) opening the mold, wherein the movable mold 2-1 moves upwards to leave the fixed mold 2-2, the first lower top plate moves upwards through related operations, the second ejector rod moves upwards under the driving of the first lower top plate, external force is applied to the bottom of the sand core, the sand core is ejected, and at the moment, the sand core is taken out.

Claims (8)

1. A multi-cavity sand core machine comprises a sand shooting mechanism (1), a sand core mould (2) and a cavity mechanism (3) arranged in the sand core mould, wherein the sand shooting mechanism can be displaced above the sand core mould and is tightly attached to the top surface of the sand core mould; penetrate sand mechanism's bottom and be provided with and penetrate sand hole (1-1), its characterized in that: the cavity mechanism comprises a vertical sand inlet pipeline (3-1) and a plurality of cavities (3-2), wherein the vertical sand inlet pipeline is communicated with each cavity, and the sand shooting holes are communicated with the vertical sand inlet pipeline; a horizontal sand inlet pipeline (3-3) is also arranged between the vertical sand inlet pipeline and each cavity, one end of the horizontal sand inlet pipeline is connected with the bottom of the vertical sand inlet pipeline, and the other end of the horizontal sand inlet pipeline is arranged on the side wall of each cavity; the multi-cavity sand core machine also comprises an upper top plate (4) for ejecting the sand core positioned at the section of the vertical sand inlet pipeline (3-1); the upper top plate is provided with a first ejector rod (4-1), the upper top plate can move above the sand core mould (2) during working, and the first ejector rod (4-1) can be inserted into an inlet of the vertical sand inlet pipeline (3-1).

2. A multiple cavity core machine according to claim 1, wherein: the sand core mould (2) comprises a moving mould (2-1) and a fixed mould (2-2); the movable mould is positioned above the fixed mould and can move in the vertical direction; the bottom of the upper top plate is also provided with a limiting mechanism (4-2) for limiting the downward displacement range of the upper top plate (4), wherein the limiting mechanism is distributed around the first ejector rod (4-1).

3. A multiple cavity core machine according to claim 2, wherein: the bottom of the upper top plate is also provided with a first guide mechanism (4-3) for assisting the first ejector rod (4-1) to align with the inlet of the vertical sand inlet channel; the movable die (2-1) is provided with a guide channel (2-1-1) matched with the first guide mechanism (4-3).

4. A multiple cavity core machine according to claim 3, wherein: the limiting mechanism (4-2) is a limiting rod; the first guide mechanism (4-3) is a guide rod.

5. A multiple cavity core machine according to claim 2, wherein: the bottom of the fixed die (2-2) is also provided with a lower top plate (2-3) which is used for ejecting the sand core and can move in the vertical direction, the lower top plate comprises a second ejector rod (2-3-1) arranged on the top surface of the lower top plate, and the second ejector rod can apply external force to the bottom of the sand core to eject the sand core.

6. A multiple cavity core machine according to claim 5, wherein: the lower top plate also comprises a plurality of second guide mechanisms (2-3-2), a first lower top plate (2-3-4) and a second lower top plate (2-3-5); the second guide mechanisms are distributed around the second ejector rod; the top of the second guide mechanism is fixedly connected with the bottom surface of the fixed die, and the bottom of the second guide mechanism is fixedly connected with the second lower top plate; the first lower top plate is located above the second lower top plate, the second ejector rod is arranged on the first lower top plate, and the first lower top plate can move up and down along the second guide rod mechanism and drive the second ejector rod to move up and down.

7. A multiple cavity core machine according to claim 6, wherein: the second guide mechanism is a guide rod, a limiting sleeve (2-3-3) used for preventing the first lower top plate from excessively rising is sleeved on the second guide mechanism in a sliding mode, and the limiting sleeve is located between the fixed die and the first lower top plate.

8. A multiple cavity core machine according to any of claims 1 to 7, wherein: the number of the cavities is 4; in addition, the sand shooting mechanism (1) comprises a sand shooting cover (1-2) and a sand shooting plate (1-3), the sand shooting plate is fixedly arranged at the bottom of the sand shooting cover, and the sand shooting holes (1-1) are arranged on the sand shooting plate.

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