CN209830239U - Speed reducer front shell forming die - Google Patents

Abstract

The utility model discloses a forming die for a front shell of a speed reducer, a water channel is arranged in a base, two left end dies and two right end dies are respectively and fixedly connected with the base, the rear end die is fixedly connected with the base, one end surface of the front end die and one end surface of the rear end die are mutually supported, the other end surface of the front end die is fixedly connected with a top die, and a sprue cup is fixedly connected with the top die and is positioned on one side of the top die; the water outlet of the water pump is communicated with the water inlet of the water channel through the first connecting pipe, the water inlet of the water pump is communicated with the water tank through the second connecting pipe, and the water tank is communicated with the water outlet of the water channel through the third connecting pipe. The liquid metal is injected into the mold to be cooled and solidified to form a casting, the cooling speed of the liquid metal is increased, and the casting is not easy to shrink holes.

Description

Speed reducer front shell forming die

Technical Field

The utility model relates to the technical field of mold, especially, relate to a reduction gear front shell forming die.

Background

The die is various dies and tools for obtaining required products by blowing, extruding, die-casting or forging forming, stamping, stretching and the like in industrial production. In short, a mold is a tool used to shape an article, the tool being made up of various parts, and different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. At present, when the front shell of the speed reducer is produced, a casting mold is generally used mostly, the front shell of the speed reducer is produced by utilizing the casting mold, the size limitation of a product is small, and the internal stress of the product is low.

However, when the existing speed reducer front shell forming die is used for casting a speed reducer front shell, the cooling speed of liquid metal is relatively slow when the liquid metal is injected into the die to be cooled and solidified to form a casting, so that the casting is easy to have shrinkage cavities.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reduction gear front shell forming die, when aiming at solving the liquid metal among the prior art and pouring into the mould in the cooling solidification and form the foundry goods, liquid metal's cooling rate is relatively slower, leads to the foundry goods technical problem that the shrinkage cavity appears easily.

In order to achieve the above object, the present invention provides a forming mold for a front shell of a speed reducer, the forming mold for the front shell of the speed reducer comprises a mold assembly and a water cooling assembly, the mold assembly comprises a base, a left end mold, a right end mold, a rear end mold, a front end mold, a top mold and a pouring cup, the base has a water channel inside, the number of the left end mold and the right end mold is two, two of the left end mold and two of the right end mold are respectively and fixedly connected with the base and respectively located at four bottom corners of the base, a connecting line between axial center lines of the two left end molds intersects with a connecting line between axial center lines of the two right end molds, the rear end mold is fixedly connected with the base and located at an upper end face of the base, and the four bottom corners of the rear end mold are respectively supported by the two left end molds and the two of the right end molds, one end face of the front end die and one end face of the rear end die are abutted against each other, the other end face of the front end die is fixedly connected with the upper die, four bottom corners of the upper die are abutted against the two left end dies and the two right end dies respectively, and the sprue cup is fixedly connected with the upper die and is positioned on one side of the upper die;

the water cooling component comprises a first connecting pipe, a water pump, a second connecting pipe, a water tank and a third connecting pipe, wherein a water outlet of the water pump is communicated with the water inlet of the water channel through the first connecting pipe, the water inlet of the water pump is communicated with the water tank through the second connecting pipe, and the water tank is communicated with the water outlet of the water channel through the third connecting pipe.

Wherein, the water course is the setting of S type curve structure.

Wherein, the water course with base integrated into one piece.

Wherein, the water-cooling subassembly still includes the condenser, the condenser with water tank fixed connection, and be located the inside of water tank.

The water cooling assembly further comprises a temperature detector, and the temperature detector is fixedly connected with the base and is located inside the water channel.

The forming die for the front shell of the speed reducer further comprises a guide pipe, the guide pipe is fixedly connected with the rear end die, and one end of the guide pipe penetrates through the outer surface wall of the rear end die.

The pouring cup comprises a lower outer wall, an upper outer wall, a lower inner wall and an upper inner wall, wherein the lower outer wall and the upper outer wall are integrally formed, a first included angle formed by the lower outer wall relative to a horizontal plane is 70 degrees, a second included angle formed by the upper outer wall relative to the horizontal plane is 90 degrees, the lower inner wall and the upper inner wall are integrally formed, the lower inner wall and the upper inner wall are both located inside the lower outer wall and the upper outer wall, a third included angle formed by the lower inner wall relative to the horizontal plane is 72-75 degrees, and a fourth included angle formed by the upper inner wall relative to the horizontal plane is 82-85 degrees.

The wall thickness width formed by the upper outer wall and the upper inner wall is one third of the wall thickness width of the lower outer wall and the lower inner wall.

Wherein, the junction between the upper inner wall and the lower inner wall is an arc surface.

The utility model discloses a reducer front shell forming die, pass through the inside water course that has of base, two left end mould and two right-hand member mould respectively with base fixed connection, and be located respectively four base angles of base, and the line between the axial centerline of two left end mould intersects with the line between the axial centerline of two right-hand member mould, the rear end mould with base fixed connection, and be located the up end of base, and four base angles of rear end mould respectively with two left end mould and two right-hand member mould support, an end face of front end mould with an end face of rear end mould support each other, another end face of front end mould with day mould fixed connection, and four base angles of day mould respectively with two left end mould and two right-hand member mould support, the pouring basin with day mould fixed connection, and is positioned at one side of the upper die; the water outlet of the water pump is communicated with the water inlet of the water channel through the first connecting pipe, the water inlet of the water pump is communicated with the water tank through the second connecting pipe, and the water tank is communicated with the water outlet of the water channel through the third connecting pipe. Wherein through store water in the water course, and then accelerate the cooling rate of liquid metal, and through the water pump with the combined action of water tank and then right water in the water course circulates, has accelerated the cooling rate of liquid metal, and when obtaining the liquid metal and pouring into the cooling solidification formation foundry goods in the mould, the cooling rate of liquid metal accelerates, and the effect of shrinkage cavity is difficult for appearing in the foundry goods.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a sectional view of the speed reducer front shell forming die of the present invention.

Fig. 2 is a schematic structural diagram of the water cooling module of the present invention.

Fig. 3 is a cross-sectional view of a pouring cup of the present invention.

Fig. 4 is a schematic structural diagram of the forming mold for the front shell of the speed reducer of the present invention.

Fig. 5 is a top view of the forming mold for the front shell of the speed reducer of the present invention.

100-a reducer front shell forming die, 10-a die assembly, 20-a water cooling assembly, 11-a base, 111-a water channel, 12-a left end die, 13-a right end die, 14-a rear end die, 15-a front end die, 16-a top die, 17-a pouring cup, 171-a lower outer wall, 172-an upper outer wall, 173-a lower inner wall, 174-an upper inner wall, 175-a first included angle, 176-a second included angle, 177-a third included angle, 178-a fourth included angle, 18-a guide pipe, 21-a first connecting pipe, 22-a water pump, 23-a second connecting pipe, 24-a water tank, 25-a third connecting pipe, 26-a condenser and 27-a temperature detector.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 5, the present invention provides a mold 100 for forming a front shell of a speed reducer, wherein the mold 100 comprises a mold assembly 10 and a water cooling assembly 20, the mold assembly 10 comprises a base 11, a left end mold 12, a right end mold 13, a rear end mold 14, a front end mold 15, a top mold 16 and a pouring cup 17, the base 11 has a water channel 111 inside, the number of the left end mold 12 and the right end mold 13 is two, the two left end molds 12 and the two right end molds 13 are respectively fixedly connected to the base 11 and respectively located at four bottom corners of the base 11, a connecting line between axial center lines of the two left end molds 12 intersects a connecting line between axial center lines of the two right end molds 13, the rear end mold 14 is fixedly connected to the base 11 and located at an upper end surface of the base 11, and the four bottom corners of the rear end mold 14 respectively abut against the two left end molds 12 and the two right end molds 13, one end face of the front end die 15 and one end face of the rear end die 14 are abutted against each other, the other end face of the front end die 15 is fixedly connected with the upper die 16, four bottom corners of the upper die 16 are respectively abutted against the two left end dies 12 and the two right end dies 13, and the sprue cup 17 is fixedly connected with the upper die 16 and is positioned on one side of the upper die 16;

water-cooling unit 20 includes first connecting pipe 21, water pump 22, second connecting pipe 23, water tank 24 and third connecting pipe 25, water pump 22's delivery port passes through first connecting pipe 21 with the water inlet intercommunication of water course 111, water pump 22's water inlet passes through second connecting pipe 23 with water tank 24 intercommunication, water tank 24 passes through third connecting pipe 25 with the delivery port intercommunication of water course 111.

In this embodiment, a control panel is disposed on a side wall of the top mold 16, a controller is disposed inside the control panel, the controller is electrically connected to the water pump 22, the top mold 16 is supported by the tail top, so that four bottom corners of the top mold 16 are respectively supported by the two left end molds 12 and the two right end molds 13, and further the rear end mold 14 and the front end mold 15 are supported by each other, at this time, liquid metal is poured into the pouring cup 17, so that the liquid metal is poured into a closed space formed by the rear end mold 14, the front end mold 15, the left end mold 12 and the right end mold 13 through the pouring cup 17, until the liquid metal is cooled, and a reducer front shell blank is formed, because the temperature of the liquid metal is high, the temperature of the rear end mold 14 is increased after heat conduction, and the heat is transferred to the base 11, the base 11 is heated, so that the cooling forming rate of the liquid metal is greatly slowed down, wherein the water channel 111 is arranged in the base 11, the water channel 111 is filled with water, the base 11 can be cooled through the water in the water channel 111, so as to indirectly cool the rear end die 14, and further the cooling forming rate of the liquid metal is accelerated, meanwhile, the controller in the control panel controls the water pump 22 to act, the water pump 22 pumps the water in the water tank 24 through the second connecting pipe 23, and the pumped water in the water tank 24 is input into the water channel 111 through the first connecting pipe 21, the water in front of the interior of the water channel 111 has a certain temperature after absorbing part of heat, and can flow into the interior of the water tank 24 through the third connecting pipe 25 under the action of pressure, further, the cooling is performed, the cooled water is pumped into the water passage 111 again by the water pump 22, and the water in the water passage 111 is changed in a reciprocating cycle, so that the heat dissipation performance of the base 11 can be further improved, and further, when the liquid metal is poured into the mold and is cooled and solidified to form the front case blank, the cooling speed of the liquid metal is increased, the front case blank is not easy to have shrinkage cavities, and the quality of the front case blank is ensured.

Further, the water channel 111 is arranged in an S-shaped curve structure.

In this embodiment, the water channel 111 is in an S-shaped curve structure, so that the flowing time of water in the water channel 111 can be increased, the water in the water channel 111 can absorb more heat, the cooling forming rate of the liquid metal is increased, and the front shell blank is not prone to shrinkage.

Further, the water passage 111 is integrally formed with the base 11.

In the present embodiment, the water channel 111 is integrally formed with the base 11, so that the cooling water does not seep out when circulating in the water channel 111, the structural strength of the base 11 is ensured, and the sealing performance of the water channel 111 can be increased.

Further, the water cooling assembly 20 further includes a condenser 26, and the condenser 26 is fixedly connected to the water tank 24 and is located inside the water tank 24.

In the present embodiment, the condenser 26 is electrically connected to the controller, the water in the water tank 24 has a certain amount of heat after being circulated repeatedly for a plurality of times, the water in the water tank 24 can be cooled by the condenser 26, the cooling rate of the water in the water tank 24 is increased, the temperature of the water entering the water channel 111 from the water tank 24 is lowered, the heat dissipation performance is improved, and the cooling rate of the liquid metal can be further increased.

Further, the water cooling assembly 20 further includes a temperature detector 27, and the temperature detector 27 is fixedly connected to the base 11 and is located inside the water channel 111.

In this embodiment, the temperature detector 27 is electrically connected to the controller, the temperature detector 27 can detect the temperature of the cooling water in the water channel 111, when the temperature of the cooling water reaches or is higher than a preset temperature value, the temperature detector 27 transmits a signal to the controller, the controller receives the signal and controls the water pump 22 to operate, and the water pump 22 extracts the water in the water tank 24 to enter the water channel 111, so as to perform cooling in a reciprocating cycle.

Further, the reducer front shell forming die 100 further includes a conduit 18, the conduit 18 is fixedly connected to the rear end die 14, and one end of the conduit 18 penetrates through an outer surface wall of the rear end die 14.

In the present embodiment, the pipe 18 is provided in the rear end mold 14, and the pipe 18 is provided to further improve the heat radiation performance of the rear end mold 14 in accordance with the water cooling unit 20, thereby accelerating the cooling of the liquid metal.

Further, the pouring cup 17 includes a lower outer wall 171, an upper outer wall 172, a lower inner wall 173 and an upper inner wall 174, the lower outer wall 171 and the upper outer wall 172 are integrally formed, a first included angle 175 formed by the lower outer wall 171 relative to a horizontal plane is 70 °, a second included angle 176 formed by the upper outer wall 172 relative to the horizontal plane is 90 °, the lower inner wall 173 and the upper inner wall 174 are integrally formed, the lower inner wall 173 and the upper inner wall 174 are both located inside the lower outer wall 171 and the upper outer wall 172, a third included angle 177 formed by the lower inner wall 173 relative to the horizontal plane is 72-75 °, and a fourth included angle 178 formed by the upper inner wall 174 relative to the horizontal plane is 82-85 °.

In this embodiment, the third included angle 177 and the fourth included angle 178 formed by the upper inner wall 174 and the lower inner wall 173 relative to the horizontal plane are both smaller than 90 degrees, so that the metal liquid can be smoothly guided into the space formed by the front end die 15 and the rear end die 14 from the pouring cup 17, and the third included angle 177 is smaller than the fourth included angle 178, so that the volume of the pouring cup 17 can be increased on the premise of keeping the height, more metal liquid can be stored, and the guiding rate can be better controlled.

Further, the wall thickness width formed by the upper outer wall 172 and the upper inner wall 174 is one third of the wall thickness width of the lower outer wall 171 and the lower inner wall 173.

In this embodiment, the upper outer wall 172 and the upper inner wall 174 form an upper wall, the upper wall is gradually thickened from top to bottom due to the angle between the upper outer wall 172 and the upper inner wall, the lower outer wall 171 and the lower inner wall 173 form a lower wall, the lower wall is gradually thickened from bottom to top due to the angle between the lower outer wall 171 and the lower inner wall 173, the thickness of the joint between the upper wall and the lower wall is the largest, and the total thickness of the upper wall is smaller than the total thickness of the lower wall because the wall thickness formed by the upper outer wall 172 and the upper inner wall 174 is one third of the wall thickness of the lower outer wall 171 and the lower inner wall 173, so that the lower wall is an inclined plane, and the wall thickness of the lower wall is relatively wide, so that the lower wall can bear a greater pressure, and further ensure the structural strength of the pouring cup 17.

Further, the connection between the upper inner wall 174 and the lower inner wall 173 is an arc-shaped surface.

In this embodiment, the connection between the upper inner wall 174 and the lower inner wall 173 is an arc-shaped surface, so that the inner wall of the pouring cup 17 is smoother, which is beneficial to introducing the molten metal and reduces the possibility of the molten metal adhering to the inner wall of the pouring cup 17.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (9)

1. A forming die for a front shell of a speed reducer is characterized in that,

the forming die for the front shell of the speed reducer comprises a die assembly and a water cooling assembly, the die assembly comprises a base, a left end die, a right end die, a rear end die, a front end die, a top die and a pouring cup, a water channel is arranged in the base, the number of the left end die and the number of the right end die are two, the two left end dies and the two right end dies are respectively and fixedly connected with the base and respectively positioned at four bottom corners of the base, a connecting line between axial center lines of the two left end dies is intersected with a connecting line between axial center lines of the two right end dies, the rear end die is fixedly connected with the base and positioned at the upper end face of the base, the four bottom corners of the rear end die are respectively abutted against the two left end dies and the two right end dies, one end face of the front end die is abutted against one end face of the rear end die, and the other end face of the front end die is fixedly connected with the top die, four bottom corners of the upper die are respectively abutted against the two left end dies and the two right end dies, and the sprue cup is fixedly connected with the upper die and is positioned on one side of the upper die;

the water cooling component comprises a first connecting pipe, a water pump, a second connecting pipe, a water tank and a third connecting pipe, wherein a water outlet of the water pump is communicated with the water inlet of the water channel through the first connecting pipe, the water inlet of the water pump is communicated with the water tank through the second connecting pipe, and the water tank is communicated with the water outlet of the water channel through the third connecting pipe.

2. The reducer front shell molding die according to claim 1,

the water channel is arranged in an S-shaped curve structure.

3. The reducer front shell molding die according to claim 2,

the water channel and the base are integrally formed.

4. The reducer front shell molding die according to claim 3,

the water cooling assembly further comprises a condenser, and the condenser is fixedly connected with the water tank and is located inside the water tank.

5. The reducer front shell molding die according to claim 4,

the water cooling assembly further comprises a temperature detector, and the temperature detector is fixedly connected with the base and is located inside the water channel.

6. The reducer front shell molding die according to claim 5,

the forming die for the front shell of the speed reducer further comprises a guide pipe, the guide pipe is fixedly connected with the rear end die, and one end of the guide pipe penetrates through the outer surface wall of the rear end die.

7. The reducer front shell molding die according to claim 1,

the pouring cup comprises a lower outer wall, an upper outer wall, a lower inner wall and an upper inner wall, wherein the lower outer wall and the upper outer wall are integrally formed, a first included angle formed by the lower outer wall relative to a horizontal plane is 70 degrees, a second included angle formed by the upper outer wall relative to the horizontal plane is 90 degrees, the lower inner wall and the upper inner wall are integrally formed, the lower inner wall and the upper inner wall are both located inside the lower outer wall and the upper outer wall, a third included angle formed by the lower inner wall relative to the horizontal plane is 72-75 degrees, and a fourth included angle formed by the upper inner wall relative to the horizontal plane is 82-85 degrees.

8. The reducer front shell molding die according to claim 7,

the wall thickness width formed by the upper outer wall and the upper inner wall is one third of the wall thickness width of the lower outer wall and the lower inner wall.

9. The reducer front shell molding die according to claim 8,

the junction between the upper inner wall and the lower inner wall is an arc-shaped surface.