CN218460780U

CN218460780U - Rotor casting mould frock

Info

Publication number: CN218460780U
Application number: CN202222532444.2U
Authority: CN
Inventors: 贾久生
Original assignee: Cixi Huili Machinery & Electric Co ltd
Current assignee: Cixi Huili Machinery & Electric Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-02-10
Anticipated expiration: 2032-09-20

Abstract

The utility model belongs to the technical field of foundry goods mould technique and specifically relates to a rotor casting mould frock is related to, it includes: the upper cavity die is used for forming a roller cavity; the lower cavity die is communicated with the upper cavity die and used for forming a connecting end cover cavity, the upper cavity die and the lower cavity die are combined to form a rotor casting cavity, the upper cavity die is arranged on one side, far away from the ground, of the lower cavity die, and metal solution flows to the connecting end cover cavity from the roller cavity during pouring; the sand box, the standing groove has been seted up to the sand box, the standing groove supplies to go up the die cavity mould, place after the die cavity mould compound is accomodate. This application has the effect of the quality when improving the rotor casting shaping.

Description

Rotor casting mould frock

Technical Field

The application relates to the technical field of casting molds, in particular to a rotor casting mold tool.

Background

The technical problem is that the point of entry is insufficient to supplement, so that a bubble cavity is formed in the casting, the quality is reduced, and improvement is needed.

The casting is one kind and pours into the die cavity through the metal solution, the production technology of the same foundry goods of die cavity appearance is obtained in order to obtain after the metal solution cools off, have the advantage of being convenient for produce the complicated part of shape, as shown in figure 1, a current rotor foundry goods, the rotor foundry goods includes cylinder a and connection end cover b, connection end cover b an organic whole sets up on the inner wall that cylinder is close to one end opening of a, and connection end cover b is concentric setting with cylinder a, connection end cover b sets up a plurality of through-holes b1 along cylinder a axle center circumference evenly distributed, connection end cover b is close to the fixed rotation section of thick bamboo b2 that is equipped with of the lateral wall of the adjacent opening of cylinder a, rotation section of thick bamboo b2 sets up with connection end cover b is concentric, the week side outer wall fixedly connected with a plurality of stiffening ribs b3 of rotation section of thick bamboo b2, a plurality of stiffening ribs b3 evenly set up along week side outer wall circumference of rotation section of thick bamboo.

In the related technology, when a rotor casting is processed through casting, a cavity is formed through matching of a mold, the cavity forming a connecting end cover is used as a pouring gate in the existing processing technology, the cavity of the end cover is far away from the ground, metal solution is gradually injected from the pouring gate during pouring, a roller is formed firstly during molding, and then the connecting end cover is formed.

In view of the above-mentioned related technologies, the inventor believes that, because the structure on one side of the end cap is relatively complex, when the metal solution flows in the cavity, it is difficult to completely fill the cavity of the connecting end cap under the action of gravity, and a bubble cavity is easily formed in the metal solution in the cavity of the connecting end cap when the metal solution is cooled, thereby reducing the molding quality of the casting.

SUMMERY OF THE UTILITY MODEL

In order to improve the quality when the rotor casting is moulded, this application provides a rotor casting mould frock.

The application provides a rotor casting mould frock adopts following technical scheme:

rotor casting mould frock includes:

the upper cavity die is used for forming a roller cavity;

the lower cavity die is communicated with the upper cavity die and used for forming a connecting end cover cavity, the upper cavity die and the lower cavity die are combined to form a rotor casting cavity, the upper cavity die is arranged on one side, far away from the ground, of the lower cavity die, and metal solution flows to the connecting end cover cavity from the roller cavity during pouring;

the sand box, the standing groove has been seted up to the sand box, the standing groove supplies to go up the die cavity mould, place after the die closing of lower die cavity mould and accomodate.

Through adopting above-mentioned technical scheme, locate lower die cavity mould with last die cavity mould and keep away from ground one side, when carrying out the molten metal pouring, make molten metal can fill up connecting the end cover die cavity earlier automatically under the action of gravity, the probability that the bubble cavity appears when reducing the cooling of connecting the end cover die cavity, cylinder die cavity structure, shape are simple relatively, and difficult formation bubble cavity when the molten metal cylinder die cavity internal cooling feeding has improved the quality when the foundry goods shaping.

Optionally, the roller cavity die further comprises an annular pouring channel, the annular pouring channel is arranged on the outer wall of the periphery of the upper cavity die, a plurality of inner pouring channels are arranged between the annular pouring channel and the upper cavity die and are arranged at equal intervals, and the inner pouring channels are communicated with the annular pouring channel and the roller cavity.

Through adopting above-mentioned technical scheme, the annular is watered and is set up in the outside of last die cavity mould, so that when the metallic solution poured, the pouring device had more sufficient removal space, thereby the pouring device was difficult for receiving spacingly at the removal in-process, the setting up of a plurality of ingates makes metallic solution can flow to the cylinder die cavity uniformly, thereby the metallic solution can fill with even flow velocity when flowing to the die cavity down, reduce the probability that the gaseous emission was untimely formed the bubble cavity often because of the metallic solution velocity of flow inequality causes in the local die cavity.

Optionally, a pouring gate for injecting the metal solution is arranged on the annular pouring gate, a pouring gate cavity for flowing the metal solution is formed in the annular pouring gate, the inner pouring gate is communicated with the pouring gate cavity, and a filter screen for filtering the metal solution is embedded in the pouring gate cavity.

Through adopting above-mentioned technical scheme, the filter screen carries out partial impurity in order to carrying out the metal solution that flows in from the mouth of watering and filters, slows down the speed that metal solution flows simultaneously for metal solution can be relatively slowly even flow, is favorable to the gas outgoing in cylinder die cavity or the connection end cover die cavity, and the texture is even when making the foundry goods shaping.

Optionally, the filter screen includes first filter screen and second filter screen, first filter screen, second filter screen are located respectively the both sides of gate opening

Through adopting above-mentioned technical scheme, the setting of first filter screen and second filter screen is so that the metallic solution who flows in from the intersection mouth filters before flowing to corresponding ingate to make the filter effect to metallic solution better relatively.

Optionally, the distance between the inner walls of the roller cavity is in a conical shape gradually reducing towards one side of the ground, and when the roller cavity forms a roller, the roller is in a horn shape.

Through adopting above-mentioned technical scheme to make metal solution form temperature gradient when the cylinder die cavity internal cooling, the metal solution that is located ground one side is because internal volume is less relatively, and the cooling shrink time is earlier, when the shrink produces the clearance, the metal solution that is located to keep away from ground one side can effectively supply the shrink clearance, makes cylinder shaping quality better, and the cylinder is kept away from ground one side simultaneously and is had certain processing surplus, is convenient for obtain the standard size through processing.

Optionally, a riser cavity is arranged on the side wall of the end face, away from the lower cavity die, of the upper cavity die, the riser cavity is communicated with the roller cavity, an exhaust hole is formed in the inner wall of the riser cavity, and the diameter of the inner wall of the riser cavity is in a trapezoidal shape gradually decreasing towards one side away from the upper cavity die.

Through adopting above-mentioned technical scheme, the gas in last die cavity mould and the lower die cavity mould is discharged through the gas pocket on the rising head die cavity to make metal solution can be full of cylinder die cavity and connection end cover die cavity, and because the rising head die cavity is the trapezoidal form setting that the internal diameter reduces gradually, thereby make to further increase die cavity heat preservation effect, the speed when the metal solution of being convenient for cools off the shrink is slowed down, thereby the feeding effect is better.

Optionally, at least two riser cavities are formed, and the at least two riser cavities are circumferentially and uniformly arranged along the axis of the roller cavity.

By adopting the technical scheme, the number of the riser cavities is at least two, and the two riser cavities are uniformly arranged to ensure that the gas is uniformly discharged, so that the metal solution in the roller cavity is uniformly contracted, and the quality of the finished casting is improved.

Optionally, at least one high-frequency generator is fixedly arranged on the peripheral side outer wall of the sand box.

By adopting the technical scheme, the high-frequency generator is arranged so that the upper cavity die and the lower cavity die in the sand box can be vibrated at high frequency, and the activity of ions, holes and bubbles in the metal solution in the upper cavity die and the lower cavity die is improved under the action of the high-frequency vibration, so that the bubbles can float from bottom to top and are discharged through the riser cavity, intergranular cracks can be eliminated, the gradual density is improved, and the gradual yield is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the metal solution is poured, the cavity of the connecting end cover can be automatically filled with the metal solution under the action of gravity, the cavity of the roller with a relatively simple structure is filled with the metal solution, and the metal solution is not easy to form a bubble cavity when being cooled, so that the molding quality of a casting is improved;

2. the metal solution of the filter screen is partially filtered, and the flowing speed of the metal solution is slowed down, so that the metal solution can uniformly flow relatively slowly, gas in a roller cavity or a connecting end cover cavity is discharged, and the casting is uniform in texture during molding;

3. the gas in the upper cavity die and the lower cavity die is discharged through the air holes in the riser cavity, so that the metal solution can fill the roller cavity and the connecting end cover cavity, the riser cavity is in a trapezoidal shape with gradually reduced inner diameter, the heat insulation effect of the cavity is further increased, the cooling shrinkage speed of the metal solution is reduced, and the feeding effect is better.

Drawings

FIG. 1 is a side view schematic of a rotor casting of the present application.

Fig. 2 is a schematic top view of a rotor casting mold tooling in the present application.

Fig. 3 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A direction in fig. 2.

Description of reference numerals: 1. a cavity die is arranged; 11. a roller cavity; 12. a riser cavity; 121. an exhaust hole; 2. a lower cavity mold; 21. connecting the end cover cavity; 3. a sand box; 31. a placement groove; 4. a high frequency generator; 5. an annular runner; 51. a gate opening; 52. a pouring tube; 53. a runner cavity; 54. an inner pouring channel; 6. a filter screen; 61. a first filter screen; 62. and a second filter screen.

Detailed Description

The present application is described in further detail below with reference to figures 2-3. In the present embodiment, the direction indicated by the z-axis of the coordinate axis in the drawing is the upper direction, and the direction opposite to the z-axis is the lower direction.

The embodiment of the application discloses rotor casting mould frock. Referring to fig. 2 and 3, the rotor casting mold tooling comprises an upper cavity mold 1, a lower cavity mold 2 and a sand box 3, wherein the sand box 3 is used for placing the upper cavity mold 1 and the lower cavity mold 2 after the upper cavity mold 1 and the lower cavity mold 2 are closed, a roller cavity 11 is formed in the upper cavity mold 1, a connecting end cover cavity 21 is formed in the lower cavity mold 2, the upper cavity mold 1 and the lower cavity mold 2 are communicated with each other, and during pouring, a metal solution is poured into the roller cavity 11 and gradually flows into and fills the connecting end cover cavity 21 along the roller cavity 11 under the action of self gravity, so that the relatively complex cavity is filled, the connecting end cover cavity 21 filled firstly is cooled and contracted, and when a contraction gap is generated in the contraction process, the metal solution on the upper side is still in a flowing state, and the contraction gap can be supplemented, and the quality of a casting finished product can be improved.

The method for forming the roller cavity 11 by the upper cavity die 1 and the connecting end cover cavity 21 by the lower cavity die 2 is common knowledge in the art, and the method for manufacturing the pouring cavity by the molding sand and the die core according to the shape of the product is not repeated in the embodiment.

Referring to fig. 2 and 3, a placing groove 31 is formed in a sand box 3, a notch of the placing groove 31 is formed towards the upper side, a roller cavity 11 and a connecting end cover cavity 21 are communicated with each other after an upper cavity die 1 and a lower cavity die 2 are assembled, the upper cavity die 1 and the lower cavity die 2 are placed in the placing groove 31, in order to enable metal solution to be located in the roller cavity 11 and the connecting end cover cavity 21 for cooling and forming, a casting has high density, a high-frequency generator 4 is fixedly connected to the peripheral outer wall of the sand box 3, the high-frequency generator 4 is electrically connected with an external power supply, after the metal solution is poured, the metal solution is enabled to be under the high-frequency vibration effect by starting the high-frequency generator 4, electrons, holes and bubbles in the metal solution have motility, the bubbles are enabled to float from bottom to top, intergranular cracks can be eliminated in the process that the metal solution gradually forms a solid state from a liquid state, and gradual density and yield are improved.

Referring to fig. 2 and 3, the inner and outer diameters of the upper cavity die 1 are gradually tapered from top to bottom, the metal solution in the roller cavity 11 is in a horn shape during cooling and molding, so that the flow velocity of the metal solution during injection is gradually increased from top to bottom, the metal solution fills the connecting end cover cavity 21 at a certain flow velocity, and after a casting is molded, the inner wall and the outer wall of the roller are cut by finish machining, so that the wall thickness of the roller is kept consistent.

Referring to fig. 2 and 3, the upper cavity mold 1 is further provided with an annular runner 5, the annular runner 5 is annularly arranged on the peripheral outer wall of the upper cavity mold 1, the annular runner 5 can be annularly arranged or can be arranged in a U-arc shape, in this embodiment, an arc-shaped arrangement is described as an example, the upper side wall of the annular runner 5 is fixedly connected with a runner port 51, a pouring pipe 52 is inserted into the runner port 51, a runner cavity 53 is formed in the annular runner 5, the runner cavity 53 is communicated with the runner port 51, a plurality of ingates 54 are further fixedly connected between the annular runner 5 and the opposite side wall of the upper cavity mold 1, the ingates 54 are communicated with the runner cavity 53 and the roller cavity 11, the ingates 54 are arranged at intervals, and adjacent ingates 54 are arranged at equal intervals, so that the metal solution can flow in from the ingates 54 when flowing into the roller cavity 11, the metal solution can uniformly fill the roller cavity, and the probability of bubble cavities is reduced.

Referring to fig. 2 and 3, the annular runner 5 is provided with a filter screen 6 embedded in the runner cavity 53, the filter screen 6 includes a first filter screen 61 and a second filter screen 62, the first filter screen 61 and the second filter screen 62 are respectively located at two sides of the intersection, when the metal solution flows into the runner cavity 53 from the runner port 51 and flows towards the inner runner 54, the first filter screen 61 and the second filter screen 62 filter the metal solution to reduce impurities in the metal solution flowing into the roller cavity 11, so that the density is uniform during casting molding.

Referring to fig. 2 and 3, in order to facilitate the metal solution to discharge bubbles formed when the connecting end cover cavity 21 or the roller cavity 11 is filled, a riser cavity 12 is further formed in the upper end surface of the upper cavity mold 1, and at least one riser cavity 12 is arranged, in this embodiment, four risers are arranged as an example, the four risers are circumferentially arranged along the axis of the roller cavity 11 at intervals, the riser cavity 12 is communicated with the roller cavity 11, an exhaust hole 121 is formed in the inner wall of the riser cavity 12 close to the upper side, the exhaust hole 121 is communicated with the outside air, and the metal solution in the roller cavity 11 exchanges heat with the outside air through the exhaust hole 121, so that the purpose of improving the cooling efficiency is achieved.

Referring to fig. 2 and 3, the inner wall of the riser cavity 12 is in a trapezoidal shape with the inner diameter gradually decreasing from bottom to top, so that the rate of heat exchange with the outside is not too fast, the metal solution which is not cooled and solidified above can feed the shrinkage gap generated by cooling and shrinkage below, and the molding quality of the casting is improved. In actual processing, after the casting is formed and taken out, cutting processing is required to cut and remove the redundant casting formed by the riser cavity 12, so as to obtain a motor rotor casting.

The implementation principle of the rotor casting mould tool in the embodiment of the application is as follows: through setting up cylinder die cavity 11 in the top, will connect end cover die cavity 21 and set up in the below for form the relatively complicated connection end cover of structure earlier during the pouring metal solution, later form the cylinder, thereby metal solution can carry out the feeding to the connection end cover of cooling shrinkage earlier, is difficult for forming the bubble cavity, is favorable to improving the shaping rate and the quality of foundry goods, and sets cylinder die cavity 11 to loudspeaker form, so that form the machining allowance, supply follow-up finish machining to obtain the foundry goods of size standard.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. Rotor casting mould frock, its characterized in that: the method comprises the following steps:

the upper cavity die (1), wherein the upper cavity die (1) is used for forming a roller cavity (11);

the lower cavity die (2) is communicated with the upper cavity die (1) and used for forming a connecting end cover cavity (21), the upper cavity die (1) and the lower cavity die (2) are matched to form a rotor casting cavity, the upper cavity die (1) is arranged on one side, far away from the ground, of the lower cavity die (2), and metal solution flows to the connecting end cover cavity (21) from the roller cavity (11) during pouring;

the sand box (3), a placing groove (31) is formed in the sand box (3), and the placing groove (31) is used for placing and accommodating the upper cavity die (1) and the lower cavity die (2) after die assembly.

2. The rotor casting die tooling of claim 1, characterized in that: still include annular and water (5), annular is watered (5) and is located go up all side outer walls of die cavity mould (1), annular water (5) with go up and be equipped with a plurality of ingates (54) between die cavity mould (1), it is adjacent equal interval sets up between ingate (54), ingate (54) intercommunication annular water (5) with cylinder die cavity (11).

3. The rotor casting mold tooling of claim 2, wherein: be equipped with on annular runner (5) and supply runner mouth (51) that metallic solution pours into, set up in annular runner (5) and supply runner cavity (53) of metallic solution circulation, ingate (54) with runner cavity (53) intercommunication, it is used for filtering metallic solution filter screen (6) to inlay the establishing in cavity (53) of watering.

4. The rotor casting mold tooling of claim 3, wherein: the filter screen (6) comprises a first filter screen (61) and a second filter screen (62), wherein the first filter screen (61) and the second filter screen (62) are respectively arranged on two sides of the pouring gate opening (51).

5. The rotor casting die tooling of claim 1, characterized in that: the distance between the inner walls of the roller cavity (11) is in a conical arrangement gradually reducing towards one side of the ground, and when the roller cavity (11) forms a roller, the roller is in a horn-shaped arrangement.

6. The rotor casting mold tooling of claim 5, wherein: the riser is characterized in that a riser cavity (12) is arranged on the side wall of the end face, far away from the lower cavity die (2), of the upper cavity die (1), the riser cavity (12) is communicated with the roller cavity (11), an exhaust hole (121) is formed in the inner wall of the riser cavity (12), and the diameter of the inner wall of the riser cavity (12) is in a trapezoidal shape which gradually reduces towards one side, far away from the upper cavity die (1).

7. The rotor casting mold tooling of claim 6, wherein: at least two riser cavities (12) are formed, and the at least two riser cavities (12) are uniformly arranged along the circumferential direction of the axis of the roller cavity (11).

8. The rotor casting mold tooling of claim 1, characterized in that: and at least one high-frequency generator (4) is fixedly arranged on the peripheral side outer wall of the sand box (3).