CN211248236U - Motor N end cover casting mould - Google Patents

Abstract

The utility model provides a motor N end cover casting mould, including cope flask and drag flask and annular mould assembling card, the both sides that the cope flask is relative are equipped with one respectively and go up the lug, the both sides that the drag flask is relative are equipped with a lower lug respectively, the quantity of mould assembling card is two, a mould assembling card corresponds one and goes up lug and a lower lug, every mould assembling rand live the last lug and the lower lug that correspond, and be equipped with the trapezoidal screw rod that is used for adjusting the elasticity between mould assembling card and last lug and the lower lug on every mould assembling card, be equipped with runner and the sprue cup that leaks hopper-shaped on the cope flask, the bottom of sprue cup is equipped with the filter screen and this bottom inserts the runner and is connected with the runner cooperation. The utility model discloses a motor N end cover casting mould, on one hand through trapezoidal screw and mould assembling block lock tight cope flask and drag flask in order to prevent that the pressure is too big and causes the case lifting when pouring the molten iron; on the other hand, the pouring cup increases the pressure of molten iron to ensure that products are effectively fed, and filter screens at the bottom end of the pouring cup can filter residues.

Description

Motor N end cover casting mould

Technical Field

The utility model belongs to the technical field of the mould, a casting mould is related to, concretely relates to motor N end cover casting mould.

Background

In the existing casting process of the N-end cover of the motor, a metal mold is matched with resin sand to be poured into a sand box for molding, then molten iron is poured to produce a casting, the resin sand needs to be mixed with furan resin and a benzenesulfonic acid curing agent to be stirred and then heated and hardened, the heating and curing molding time is too long, the occupied area is large, the production capacity is influenced, and a large amount of irritant toxic gas is generated after the resin sand mixed with the furan resin and the benzenesulfonic acid curing agent is contacted with the molten iron; the surface of the casting becomes rough and uneven due to the coating, and the overall dimension cannot be effectively controlled. The wall thickness of the casting is uneven, the internal structure is loose and serious, the quality of the casting cannot be ensured, and the qualification rate is low.

Therefore, for those skilled in the art, how to provide a casting mold for an N-end cap of a motor with a new structure to improve the product quality of a casting of the N-end cap of the motor becomes a technical problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem that prior art exists, the utility model aims to provide a motor N end cap casting mould to improve the product quality of motor N end cap foundry goods.

In order to solve the problems, the utility model provides a motor N end cover casting mould, including cope flask and drag flask that mutually support, including annular mold assembling card, the relative both sides of cope flask are equipped with an upper lug respectively, the relative both sides of drag flask are equipped with a lower lug respectively, the quantity of mold assembling card is two, and a mold assembling card corresponds an upper lug and a lower lug, and every mold assembling rand lives corresponding upper lug and lower lug, and is equipped with the trapezoidal screw rod that is used for adjusting the elasticity between mold assembling card and upper lug and the lower lug on every mold assembling card, trapezoidal screw rod and mold assembling card threaded connection; the sand box is characterized in that a pouring gate and a funnel-shaped pouring cup are arranged on the cope box, the pouring cup is arranged above the cope box, a filter screen is arranged at the bottom end of the pouring cup, and the bottom end of the pouring cup is inserted into the pouring gate and is connected with the pouring gate in a matched mode.

As a further improvement of the casting mould for the end cover of the N end of the motor, the inner surfaces of the upper sand box and the lower sand box are respectively coated with a layer of precoated sand; also comprises a sand core made of the precoated sand.

As a further improvement of the casting die for the end cover of the N end of the motor, the filter screen is a silicon carbide filter screen.

The utility model discloses a motor N end cover casting mould, simple structure can improve the product quality and the qualification rate of motor N end cover foundry goods, is equipped with the trapezoidal screw rod that is used for adjusting the elasticity between mould assembling card and upper lug and the lower lug on the one hand on every mould assembling card, trapezoidal screw rod and mould assembling card threaded connection, after cope flask and drag flask compound die dock, the pressure is too big when tightly locking cope flask and drag flask through trapezoidal screw rod and mould assembling card in order to prevent to pour the molten iron and arouse the case lifting; on the other hand, the upper sand box is provided with a pouring gate and a funnel-shaped pouring gate cup, the pouring gate cup is arranged at the pouring gate of the upper sand box after the box closing is finished, the pouring gate cup increases the pressure of molten iron to ensure that products are effectively fed, and a filter screen at the bottom end of the pouring gate cup can filter residues.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a specific embodiment of the casting mold for the N-end cap of the motor of the present invention.

In the drawings:

1-cope box 2-drag box 3-mould assembling clamp

4-upper lug 5-lower lug 6-trapezoidal screw

7-sprue 8-sprue cup

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the appearing terms is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that unless otherwise explicitly specified and limited, the specific meaning of the above terms in the present invention can be specifically understood by those of ordinary skill in the art.

Referring to fig. 1, a casting mold for an end cap of an N-end of a motor comprises a cope flask 1 and a drag flask 2 which are matched with each other, and an annular mold assembling clamp 3, two opposite sides of the cope flask 1 are respectively provided with an upper lug 4, two opposite sides of the drag flask 2 are respectively provided with a lower lug 5, the number of the box closing cards 3 is two, one box closing card 3 corresponds to one upper lug 4 and one lower lug 5, each box closing card 3 encircles the corresponding upper lug 4 and lower lug 5, and each box closing clamp 3 is provided with a trapezoidal screw 6 for adjusting the tightness between the box closing clamp 3 and the upper lug 4 and the lower lug 5, the trapezoidal screw 6 is in threaded connection with the box closing clamp 3, a pouring gate 7 and a funnel-shaped pouring cup 8 are arranged on the upper sand box 1, the pouring cup 8 is arranged above the upper sand box 1, the bottom end of the pouring cup 8 is provided with a filter screen and is inserted into the pouring gate 7 to be matched with the bottom end.

In the above embodiment, each box closing card 3 is provided with the trapezoidal screw 6 for adjusting the tightness between the box closing card 3 and the upper lug 4 and the lower lug 5, the trapezoidal screw 6 is in threaded connection with the box closing card 3, the screw end of the trapezoidal screw 6 faces the upper lug 4 or the lower lug 5, and by rotating the trapezoidal screw 6, the screw end of the trapezoidal screw 6 can selectively abut against and be away from the upper lug 4 or the lower lug 5, so as to adjust the tightness between the box closing card 3 and the upper lug 4 and the lower lug 5. In the embodiment shown in fig. 1, the trapezoidal screw 6 is located at the upper part of the box closing card 3, and the screw end of the trapezoidal screw 6 can selectively abut against and be far away from the upper lug 4. Furthermore, the filter mesh is preferably a custom silicon carbide filter mesh.

According to the above, the utility model discloses a motor N end cover casting mould, simple structure can improve the product quality and the qualification rate of motor N end cover foundry goods, is equipped with the trapezoidal screw 6 that is used for adjusting the elasticity between mould assembling card 3 and upper lug 4 and lower lug 5 on the one hand on each mould assembling card 3, and trapezoidal screw 6 and mould assembling card 3 threaded connection, after cope flask 1 and drag flask 2 compound die butt joint, pressure too big arouses to lift the case when locking cope flask 1 and drag flask 2 through trapezoidal screw 6 and mould assembling card 3 in order to prevent the pouring molten iron; on the other hand, the upper sand box 1 is provided with a pouring gate 7 and a funnel-shaped pouring gate cup 8, the pouring gate cup 8 is placed at the pouring gate 7 of the upper sand box 1 after the box closing is finished, the pouring gate cup 8 increases the pressure of molten iron to ensure that products are effectively fed, and a filter screen at the bottom end of the pouring gate cup 8 can filter residues.

In a preferred embodiment, the inner surfaces of the cope flask 1 and the drag flask 2 are respectively coated with a layer of precoated sand. Meanwhile, the sand core is made of precoated sand. The precoated sand mainly adopts high-quality selected natural quartz sand as raw sand, thermoplastic phenolic resin, urotropine and a reinforcing agent as raw materials. It mainly has the following advantages: 1. vibration sand removal, high strength, low gas generation and low expansion; 2. melt has good dispersibility and high surface smoothness of casting; 3. the shell mold has no layer, good thermal stability, good thermal conductivity, good fluidity and flat casting surface; 4. high strength, high temperature resistance, low expansion, good demoulding performance and good sand adhesion resistance; 5. uniform shell layer, no shelling and high curing speed. In the embodiment, the molding material is changed from the original resin sand to the precoated sand, and the used high-efficiency environment-friendly precoated sand does not generate a large amount of irritant toxic gas at high temperature during pouring compared with the existing structure, so that the surface smoothness of a casting is higher than Ra12.5 without painting.

In the specific operation process, the method mainly comprises the following operation steps: designing a set of model completely consistent with the shape of a cavity in an end cover at the N end of a motor as a core box, wherein the core box comprises an upper core box die and a lower core box die; secondly, designing a set of model which is completely consistent with the shape of the rest structure of the N-end cover of the motor as a female die after removing the hollow cavity of the N-end cover of the motor in the step one; thirdly, manufacturing a cope flask 1 and a drag flask 2 which are associated with the master mold, wherein the clearance between the cope flask 1 and the drag flask 2 and the master mold is 5-7 mm; fixing the master mold on a sand shooting machine, clamping the cope flask 1, the drag flask 2 and the master mold through a mold assembling clamp 3, a trapezoidal screw 6 and the sand shooting machine, spraying the precoated sand onto the pre-designed cope flask 1 and drag flask 2 through a sand shooting hole of the sand shooting machine when the sand shooting machine is heated to a proper temperature, filling the cavity between the master mold and the cope flask 1 and drag flask 2 with the precoated sand, drawing the mold after curing, and obtaining the cope flask 1 and the drag flask 2 with the upper sand and the lower sand in sequence after natural cooling; fixing the upper core box mould and the lower core box mould on a core making machine, closing the moulds and clamping to form a core box, spraying precoated sand to the inner cavity of the core box through a sand shooting hole of the core making machine when the core making machine is heated to a proper temperature, opening the mould after curing, taking out the sand core and removing a split seam; sixthly, bonding the sand core prepared in the step (V) in the upper sand box 1 and the lower sand box 2 which are coated with sand at the upper part and the lower part obtained in the step (IV) to form a cavity which is completely consistent with the shape of the end cover at the N end of the motor and can be used for mould assembling and pouring; seventhly, after the mould assembling is finished, placing the pouring cup 8 at the pouring gate 7 of the upper sand box 1, and hanging the pouring cup on a pouring table; eighthly, putting the raw materials of the molten iron into a smelting furnace to be heated according to the mixture ratio of the mixture list, and smelting to obtain molten iron; and ninth, when the molten iron is poured, the filter screen can remove slag, and the pouring cup 8 increases the pressure of the molten iron to ensure that the product is effectively fed.

To sum up, the utility model discloses a motor N end cover casting mould, simple structure can improve the product quality and the qualification rate of motor N end cover foundry goods, is equipped with the trapezoidal screw 6 that is used for adjusting the elasticity between mould assembling card 3 and upper lug 4 and lower lug 5 on each mould assembling card 3 on the one hand, and trapezoidal screw 6 and mould assembling card 3 threaded connection, after mould assembling butt joint of cope flask 1 and drag flask 2, pressure is too big when locking cope flask 1 and drag flask 2 through trapezoidal screw 6 and mould assembling card 3 in order to prevent to pour into a mould the molten iron and cause the lifting of case; on the other hand, the upper sand box 1 is provided with a pouring gate 7 and a funnel-shaped pouring gate cup 8, the pouring gate cup 8 is placed at the pouring gate 7 of the upper sand box 1 after the box closing is finished, the pouring gate cup 8 increases the pressure of molten iron to ensure that products are effectively fed, and a filter screen at the bottom end of the pouring gate cup 8 can filter residues.

The utility model discloses a motor N end cover casting mould, molding material and moulding equipment have been changed, perfect the sand box makes the molding simple and convenient rapidly, it has more than 4 times to have shortened original molding time, casting surface cleaning is simple, the steady quality is reliable, the overall dimension is accurate, and because the use is high-efficient environmental protection tectorial membrane sand, high temperature during the pouring can not produce a large amount of irritability poison gas yet, it is higher than Ra12.5 not to brush coating and make casting surface finish, energy-concerving and environment-protective pollution-free, the equipment semi-automatization molding has been changed from original full manual molding, economic benefits is obvious.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (3)

1. The utility model provides a motor N end cover casting mould, includes cope flask (1) and drag flask (2) of mutually supporting, its characterized in that: the mould assembling device comprises annular mould assembling clamps (3), wherein two opposite sides of an upper sand box (1) are respectively provided with an upper lug (4), two opposite sides of a lower sand box (2) are respectively provided with a lower lug (5), the number of the mould assembling clamps (3) is two, one mould assembling clamp (3) corresponds to one upper lug (4) and one lower lug (5), each mould assembling clamp (3) encircles the corresponding upper lug (4) and lower lug (5), each mould assembling clamp (3) is provided with a trapezoidal screw rod (6) for adjusting the tightness among the mould assembling clamps (3), the upper lugs (4) and the lower lugs (5), and the trapezoidal screw rods (6) are in threaded connection with the mould assembling clamps (3); be equipped with runner (7) and funnel-shaped pouring basin (8) on cope flask (1), pouring basin (8) set up in the top of cope flask (1), the bottom of pouring basin (8) is equipped with the filter screen and this bottom inserts runner (7) with runner (7) cooperation is connected.

2. The casting mold for the motor N-end cap according to claim 1, wherein: the inner surfaces of the upper sand box (1) and the lower sand box (2) are respectively coated with a layer of precoated sand; also comprises a sand core made of the precoated sand.

3. The motor N-end cap casting mold according to claim 1 or 2, wherein: the filter screen is a silicon carbide filter screen.

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