CN212884968U

CN212884968U - Low stress valve gap pouring device

Info

Publication number: CN212884968U
Application number: CN202021516564.8U
Authority: CN
Inventors: 张小坤; 张国强; 胡陈亮
Original assignee: CHANGTAI COUNTY HAILI MACHINERY MANUFACTURING CO LTD
Current assignee: Zhangzhou Haili Machinery Manufacturing Co.,Ltd.
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-06
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a low stress valve gap pouring device, including last mould and lower mould, the lower surface of going up the mould is connected with the last fixed surface of lower mould, the last fixed surface of going up the mould is connected with the toper material pouring pipe, and the feed end of toper material pouring pipe runs through the upper surface of last mould and extends to the lower surface of last mould, the lower fixed surface of lower mould is connected with the platform, the lower surface difference fixedly connected with fixed column and the fixed box of platform, the sliding surface of fixed column is connected with the stay tube, the lower fixed surface of stay tube is connected with the bottom plate. This low stress valve gap pouring device through setting up motor and eccentric wheel, is convenient for the rotation of motor to drive the eccentric wheel and rotates, and the focus of eccentric wheel is not in the pivot of motor, and when rotating, the eccentric wheel is circular motion, produces centrifugal force to drive the platform vibrations, vibrations can effectively reduce the stress peak value in valve gap foundry goods blank cooling process, increase the intensity of valve gap.

Description

Low stress valve gap pouring device

Technical Field

The utility model relates to a valve gap pouring technical field specifically is a low stress valve gap pouring device.

Background

The valve cover is a valve part provided with a valve rod sealing element and used for connecting or supporting the actuating mechanism. The valve cover is mostly a casting, and the casting is a metal molding object obtained by various casting methods, namely, a smelting liquid metal is poured into a pre-prepared casting mould by pouring, injecting, sucking or other casting methods, and after cooling, the object with certain shape, size and performance is obtained by subsequent processing means such as grinding and the like.

During the cooling process of the casting after solidification, solid contraction is continuously generated, and some alloys also have solid phase transformation to cause expansion or contraction, which changes the volume and the shape of the casting. If this variation is impeded, stresses in the casting, i.e. casting stresses, are created.

Casting stresses can weaken the structural strength of the casting, and some valves with valve covers are used in delicate equipment, and the low strength valve covers can cause damage to the equipment.

Therefore, a low-stress valve cover pouring device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low stress valve gap pouring device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low stress valve gap pouring device, includes mould and lower mould, the lower surface of going up the mould is connected with the upper surface fixed surface of lower mould, the last fixed surface of going up the mould is connected with toper pouring pipe, and the feed end of toper pouring pipe runs through the upper surface of last mould and extends to the lower surface of last mould, the lower fixed surface of lower mould is connected with the platform, the lower surface difference fixedly connected with fixed column and the fixed box of platform, the sliding surface of fixed column is connected with the stay tube, just fixedly connected with compression spring between the lower surface of the interior diapire of stay tube and fixed column, the lower fixed surface of stay tube is connected with the bottom plate, the fixed surface of fixed box is connected with the motor, the surface of motor output runs through fixed box and.

Preferably, the upper surface of the lower die is provided with three die cavities, and the positions and the number of the conical material pouring pipes are matched with those of the die cavities.

Preferably, the upper surface of the upper die is provided with nine air holes extending to the lower surface of the upper die, the three air holes form a group, and the three groups of air holes are respectively adapted to the positions of the die cavity.

Preferably, the inner wall of lower mould is provided with heater strip and temperature sensor respectively, and heater strip, temperature sensor and motor all with external control ware coupling connection.

Preferably, the left side surface and the right side surface of the lower die are both fixedly connected with hanging rings, and the central lines of the lower die front surfaces of the two hanging rings are symmetrically arranged on the two sides of the lower die.

Preferably, the number of the fixing columns, the number of the supporting tubes and the number of the compression springs are four, and the four fixing columns, the four supporting tubes and the four compression springs are all arranged at four corners of the lower surface of the platform.

Advantageous effects

The utility model provides a low stress valve gap pouring device possesses following beneficial effect:

1. this low stress valve gap pouring device pours the material pipe through setting up three die cavity and toper, is convenient for pour a plurality of valve gap foundry goods blanks simultaneously to increase work efficiency, through setting up heater strip and temperature sensor, be convenient for will be in foundry goods cooling process, with the foundry goods reheating to the temperature range of the elastoplasticity state of alloy, and keep a period, thereby can effectually get rid of partial stress, guarantee the intensity of valve gap.

2. This low stress valve gap pouring device through setting up motor and eccentric wheel, is convenient for the rotation of motor to drive the eccentric wheel and rotates, and the focus of eccentric wheel is not in the pivot of motor, and when rotating, the eccentric wheel is circular motion, produces centrifugal force to drive the platform vibrations, vibrations can effectively reduce the stress peak value in valve gap foundry goods blank cooling process, increase the intensity of valve gap.

Drawings

FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

fig. 3 is a schematic view of a part a of fig. 1.

In the figure: the device comprises an upper die 1, a lower die 2, a conical material pouring pipe 3, a platform 4, a fixed column 5, a fixed box 6, a supporting pipe 7, a compression spring 8, a bottom plate 9, a motor 10, an eccentric wheel 11, a die cavity 12, air holes 13, a heating wire 14, a temperature sensor 15 and a hanging ring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a low stress valve gap pouring device, includes mould 1 and lower mould 2, goes up the fixed surface of the lower surface of mould 1 and lower mould 2 and is connected, goes up the fixed surface of mould 1 and is connected with toper pouring pipe 3, and the feed end of toper pouring pipe 3 runs through the upper surface of mould 1 and extends to the lower surface of last mould 1.

Three die cavity 12 has been seted up to the upper surface of lower mould 2, and the position and the quantity homogeneous phase adaptation of toper pouring pipe 3 and die cavity 12, pour pipe 3 through setting up three die cavity 12 and toper, be convenient for pour a plurality of valve gap foundry goods blanks simultaneously, thereby increase work efficiency, go up the upper surface of mould 1 and set up the bleeder vent 13 that extends to last mould 1 lower surface, the quantity of bleeder vent 13 is nine, three bleeder vent 13 is a set of, and three bleeder vents 13 of group suit with the position of die cavity 12 respectively, increase bleeder vent 13, can effectually prevent that the inside gas pocket from appearing of valve gap foundry goods blank.

The left side and the right side of the lower die 2 are both fixedly connected with hanging rings 16, the two hanging rings 16 are symmetrically arranged on two sides of the lower die 2 by taking the center line of the front surface of the lower die 2 as a symmetry axis, the pouring die is convenient to hang by arranging the hanging rings 16, the inner wall of the lower die 2 is respectively provided with a heating wire 14 and a temperature sensor 15, the heating wire 14, the temperature sensor 15 and the motor 10 are all coupled with an external controller, and the casting is convenient to be reheated to the temperature range of the elastoplastic state of the alloy in the casting cooling process by arranging the heating wire 14 and the temperature sensor 15 and is kept for a period of time, so that partial stress can be effectively removed, and the strength of the.

Lower mould 2's lower fixed surface is connected with platform 4, platform 4's lower surface is fixedly connected with fixed column 5 and fixed box 6 respectively, fixed column 5's surperficial sliding connection has stay tube 7, and fixedly connected with compression spring 8 between the lower surface of the interior diapire of stay tube 7 and fixed column 5, the quantity of stay tube 7 and compression spring 8 is four, and four fixed columns 5, stay tube 7 and compression spring 8 all set up the four corners department at platform 4 lower surface, the lower fixed surface of stay tube 7 is connected with bottom plate 9.

The surface of the fixing box 6 is fixedly connected with a motor 10, the surface of the output end of the motor 10 penetrates through the fixing box 6 and is fixedly connected with an eccentric wheel 11, the motor 10 and the eccentric wheel 11 are arranged, the eccentric wheel 11 is driven to rotate by the rotation of the motor 10 conveniently, the gravity center of the eccentric wheel 11 is not located on the rotating shaft of the motor 10, when the eccentric wheel 11 rotates, circular motion is carried out, centrifugal force is generated, the platform 4 is driven to vibrate, the stress peak value can be effectively reduced by vibration in the cooling process of a valve cover casting blank, and the strength of a valve cover is increased.

The working principle is as follows: when the low-stress valve cover pouring device is used, firstly, smelted molten iron is poured into the die cavity 12 through the conical pouring pipe 3, in the molten iron cooling process, the temperature sensor 15 monitors the temperature of the molten iron, when the temperature is reduced to 500 ℃, the cooled valve cover blank is heated to 600 ℃ through the heating wire 14 and is kept for a period of time, the motor 10 is started simultaneously to drive the eccentric wheel 11 to rotate, the gravity center of the eccentric wheel 11 is not on the rotating shaft of the motor 10, and when the valve cover pouring device rotates, the eccentric wheel 11 does circular motion to generate centrifugal force, so that the stress peak value is effectively reduced, and the strength of the valve cover is increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low stress valve gap pouring device, includes mould (1) and lower mould (2), its characterized in that: the lower surface of the upper die (1) is fixedly connected with the upper surface of the lower die (2), the upper surface of the upper die (1) is fixedly connected with a conical material pouring pipe (3), the feeding end of the conical material pouring pipe (3) penetrates through the upper surface of the upper die (1) and extends to the lower surface of the upper die (1), the lower surface of the lower die (2) is fixedly connected with a platform (4), the lower surface of the platform (4) is respectively and fixedly connected with a fixed column (5) and a fixed box (6), the surface of the fixed column (5) is connected with a supporting tube (7) in a sliding way, a compression spring (8) is fixedly connected between the inner bottom wall of the supporting tube (7) and the lower surface of the fixing column (5), the lower surface of the supporting tube (7) is fixedly connected with a bottom plate (9), the surface of the fixed box (6) is fixedly connected with a motor (10), the surface of the output end of the motor (10) penetrates through the fixing box (6) and is fixedly connected with an eccentric wheel (11).

2. A low stress valve cover casting apparatus according to claim 1, wherein: three die cavities (12) are formed in the upper surface of the lower die (2), and the positions and the number of the conical material pouring pipes (3) and the die cavities (12) are matched.

3. A low stress valve cover casting apparatus according to claim 1, wherein: go up the upper surface of mould (1) and offer bleeder vent (13) that extend to last mould (1) lower surface, the quantity of bleeder vent (13) is nine, and three bleeder vent (13) are a set of, and three bleeder vent (13) of group suit with the position of die cavity (12) respectively.

4. A low stress valve cover casting apparatus according to claim 1, wherein: the inner wall of the lower die (2) is provided with a heating wire (14) and a temperature sensor (15) respectively, and the heating wire (14), the temperature sensor (15) and the motor (10) are all coupled with an external controller.

5. A low stress valve cover casting apparatus according to claim 1, wherein: the left side surface and the right side surface of the lower die (2) are fixedly connected with hanging rings (16), and the two hanging rings (16) are symmetrically arranged on two sides of the lower die (2) by taking the center line of the front surface of the lower die (2) as a symmetry axis.

6. A low stress valve cover casting apparatus according to claim 1, wherein: the number of the fixing columns (5), the number of the supporting tubes (7) and the number of the compression springs (8) are four, and the four fixing columns (5), the four supporting tubes (7) and the four compression springs (8) are all arranged at four corners of the lower surface of the platform (4).